From bcbbf908e3c6d60f8efb7e2e8f09285bbda9e11e Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 10 Jun 2011 11:13:05 +0100 Subject: [PATCH 001/125] ARM: ebsa110: move platform definitions out of mach/hardware.h Stop exposing platform definitions to the entire kernel tree, move them into a private header file instead. Signed-off-by: Russell King --- arch/arm/mach-ebsa110/core.c | 5 +-- arch/arm/mach-ebsa110/core.h | 37 ++++++++++++++++++ arch/arm/mach-ebsa110/include/mach/hardware.h | 39 ------------------- arch/arm/mach-ebsa110/io.c | 20 ++++++++++ arch/arm/mach-ebsa110/leds.c | 2 + 5 files changed, 60 insertions(+), 43 deletions(-) create mode 100644 arch/arm/mach-ebsa110/core.h diff --git a/arch/arm/mach-ebsa110/core.c b/arch/arm/mach-ebsa110/core.c index 294aad07f7a..d7f83e912bd 100644 --- a/arch/arm/mach-ebsa110/core.c +++ b/arch/arm/mach-ebsa110/core.c @@ -30,10 +30,7 @@ #include -#define IRQ_MASK 0xfe000000 /* read */ -#define IRQ_MSET 0xfe000000 /* write */ -#define IRQ_STAT 0xff000000 /* read */ -#define IRQ_MCLR 0xff000000 /* write */ +#include "core.h" static void ebsa110_mask_irq(struct irq_data *d) { diff --git a/arch/arm/mach-ebsa110/core.h b/arch/arm/mach-ebsa110/core.h new file mode 100644 index 00000000000..61f675426eb --- /dev/null +++ b/arch/arm/mach-ebsa110/core.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 1996-2000 Russell King. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This file contains the core hardware definitions of the EBSA-110. + */ +#ifndef CORE_H +#define CORE_H + +/* Physical addresses/sizes */ +#define ISAMEM_PHYS 0xe0000000 +#define ISAMEM_SIZE 0x10000000 + +#define ISAIO_PHYS 0xf0000000 +#define ISAIO_SIZE PGDIR_SIZE + +#define TRICK0_PHYS 0xf2000000 +#define TRICK1_PHYS 0xf2400000 +#define TRICK2_PHYS 0xf2800000 +#define TRICK3_PHYS 0xf2c00000 +#define TRICK4_PHYS 0xf3000000 +#define TRICK5_PHYS 0xf3400000 +#define TRICK6_PHYS 0xf3800000 +#define TRICK7_PHYS 0xf3c00000 + +/* Virtual addresses */ +#define PIT_BASE 0xfc000000 /* trick 0 */ +#define SOFT_BASE 0xfd000000 /* trick 1 */ +#define IRQ_MASK 0xfe000000 /* trick 3 - read */ +#define IRQ_MSET 0xfe000000 /* trick 3 - write */ +#define IRQ_STAT 0xff000000 /* trick 4 - read */ +#define IRQ_MCLR 0xff000000 /* trick 4 - write */ + +#endif diff --git a/arch/arm/mach-ebsa110/include/mach/hardware.h b/arch/arm/mach-ebsa110/include/mach/hardware.h index 4b2fb774390..f4e5407bd00 100644 --- a/arch/arm/mach-ebsa110/include/mach/hardware.h +++ b/arch/arm/mach-ebsa110/include/mach/hardware.h @@ -12,48 +12,9 @@ #ifndef __ASM_ARCH_HARDWARE_H #define __ASM_ARCH_HARDWARE_H -/* - * The EBSA110 has a weird "ISA IO" region: - * - * Region 0 (addr = 0xf0000000 + io << 2) - * -------------------------------------------------------- - * Physical region IO region - * f0000fe0 - f0000ffc 3f8 - 3ff ttyS0 - * f0000e60 - f0000e64 398 - 399 - * f0000de0 - f0000dfc 378 - 37f lp0 - * f0000be0 - f0000bfc 2f8 - 2ff ttyS1 - * - * Region 1 (addr = 0xf0000000 + (io & ~1) << 1 + (io & 1)) - * -------------------------------------------------------- - * Physical region IO region - * f00014f1 a79 pnp write data - * f00007c0 - f00007c1 3e0 - 3e1 pcmcia - * f00004f1 279 pnp address - * f0000440 - f000046c 220 - 236 eth0 - * f0000405 203 pnp read data - */ - -#define ISAMEM_PHYS 0xe0000000 -#define ISAMEM_SIZE 0x10000000 - -#define ISAIO_PHYS 0xf0000000 -#define ISAIO_SIZE PGDIR_SIZE - -#define TRICK0_PHYS 0xf2000000 -#define TRICK1_PHYS 0xf2400000 -#define TRICK2_PHYS 0xf2800000 -#define TRICK3_PHYS 0xf2c00000 -#define TRICK4_PHYS 0xf3000000 -#define TRICK5_PHYS 0xf3400000 -#define TRICK6_PHYS 0xf3800000 -#define TRICK7_PHYS 0xf3c00000 - #define ISAMEM_BASE 0xe0000000 #define ISAIO_BASE 0xf0000000 -#define PIT_BASE 0xfc000000 -#define SOFT_BASE 0xfd000000 - /* * RAM definitions */ diff --git a/arch/arm/mach-ebsa110/io.c b/arch/arm/mach-ebsa110/io.c index c52e3047a7e..756cc377a73 100644 --- a/arch/arm/mach-ebsa110/io.c +++ b/arch/arm/mach-ebsa110/io.c @@ -177,6 +177,26 @@ void writesl(void __iomem *addr, const void *data, int len) } EXPORT_SYMBOL(writesl); +/* + * The EBSA110 has a weird "ISA IO" region: + * + * Region 0 (addr = 0xf0000000 + io << 2) + * -------------------------------------------------------- + * Physical region IO region + * f0000fe0 - f0000ffc 3f8 - 3ff ttyS0 + * f0000e60 - f0000e64 398 - 399 + * f0000de0 - f0000dfc 378 - 37f lp0 + * f0000be0 - f0000bfc 2f8 - 2ff ttyS1 + * + * Region 1 (addr = 0xf0000000 + (io & ~1) << 1 + (io & 1)) + * -------------------------------------------------------- + * Physical region IO region + * f00014f1 a79 pnp write data + * f00007c0 - f00007c1 3e0 - 3e1 pcmcia + * f00004f1 279 pnp address + * f0000440 - f000046c 220 - 236 eth0 + * f0000405 203 pnp read data + */ #define SUPERIO_PORT(p) \ (((p) >> 3) == (0x3f8 >> 3) || \ ((p) >> 3) == (0x2f8 >> 3) || \ diff --git a/arch/arm/mach-ebsa110/leds.c b/arch/arm/mach-ebsa110/leds.c index 6a6ea57c2a4..d43121a30aa 100644 --- a/arch/arm/mach-ebsa110/leds.c +++ b/arch/arm/mach-ebsa110/leds.c @@ -20,6 +20,8 @@ #include #include +#include "core.h" + static spinlock_t leds_lock; static void ebsa110_leds_event(led_event_t ledevt) From 5eca8f3a8048235d7fa3faa9ee4fc292d25a7425 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 10 Jun 2011 12:35:45 +0100 Subject: [PATCH 002/125] ARM: ebsa110: provide TRICK?_SIZE macros Signed-off-by: Russell King --- arch/arm/mach-ebsa110/core.c | 8 ++++---- arch/arm/mach-ebsa110/core.h | 4 ++++ 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-ebsa110/core.c b/arch/arm/mach-ebsa110/core.c index d7f83e912bd..6235efb0ccd 100644 --- a/arch/arm/mach-ebsa110/core.c +++ b/arch/arm/mach-ebsa110/core.c @@ -76,22 +76,22 @@ static struct map_desc ebsa110_io_desc[] __initdata = { { /* IRQ_STAT/IRQ_MCLR */ .virtual = IRQ_STAT, .pfn = __phys_to_pfn(TRICK4_PHYS), - .length = PGDIR_SIZE, + .length = TRICK4_SIZE, .type = MT_DEVICE }, { /* IRQ_MASK/IRQ_MSET */ .virtual = IRQ_MASK, .pfn = __phys_to_pfn(TRICK3_PHYS), - .length = PGDIR_SIZE, + .length = TRICK3_SIZE, .type = MT_DEVICE }, { /* SOFT_BASE */ .virtual = SOFT_BASE, .pfn = __phys_to_pfn(TRICK1_PHYS), - .length = PGDIR_SIZE, + .length = TRICK1_SIZE, .type = MT_DEVICE }, { /* PIT_BASE */ .virtual = PIT_BASE, .pfn = __phys_to_pfn(TRICK0_PHYS), - .length = PGDIR_SIZE, + .length = TRICK0_SIZE, .type = MT_DEVICE }, diff --git a/arch/arm/mach-ebsa110/core.h b/arch/arm/mach-ebsa110/core.h index 61f675426eb..c93c9e43012 100644 --- a/arch/arm/mach-ebsa110/core.h +++ b/arch/arm/mach-ebsa110/core.h @@ -18,10 +18,14 @@ #define ISAIO_SIZE PGDIR_SIZE #define TRICK0_PHYS 0xf2000000 +#define TRICK0_SIZE PGDIR_SIZE #define TRICK1_PHYS 0xf2400000 +#define TRICK1_SIZE PGDIR_SIZE #define TRICK2_PHYS 0xf2800000 #define TRICK3_PHYS 0xf2c00000 +#define TRICK3_SIZE PGDIR_SIZE #define TRICK4_PHYS 0xf3000000 +#define TRICK4_SIZE PGDIR_SIZE #define TRICK5_PHYS 0xf3400000 #define TRICK6_PHYS 0xf3800000 #define TRICK7_PHYS 0xf3c00000 From 30816ac0495cb4f33fc8d748f64ac3cc880cb3c1 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 20 Jan 2012 22:51:07 +0000 Subject: [PATCH 003/125] MFD: mcp-core: sanitize host creation/removal host_unregister() gives us no chance between removing the device and the mcp data structure being freed to access the data inbetween, which drivers may need to do if they need to iounmap() pointers in their private data structures. Therefore, re-jig the interfaces, which are now, on creation: mcp = mcp_host_alloc() if (mcp) { ret = mcp_host_add(mcp, data); if (!ret) mcp_host_free(mcp); } and on removal: mcp_host_del(mcp); ... access mcp ... mcp_host_free(mcp); The free does the final put_device() on the struct device as one would expect. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-core.c | 19 +++++++++++++------ drivers/mfd/mcp-sa11x0.c | 6 ++++-- include/linux/mfd/mcp.h | 5 +++-- 3 files changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c index 86cc3f7841c..cc764317784 100644 --- a/drivers/mfd/mcp-core.c +++ b/drivers/mfd/mcp-core.c @@ -208,6 +208,7 @@ struct mcp *mcp_host_alloc(struct device *parent, size_t size) mcp = kzalloc(sizeof(struct mcp) + size, GFP_KERNEL); if (mcp) { spin_lock_init(&mcp->lock); + device_initialize(&mcp->attached_device); mcp->attached_device.parent = parent; mcp->attached_device.bus = &mcp_bus_type; mcp->attached_device.dma_mask = parent->dma_mask; @@ -217,18 +218,24 @@ struct mcp *mcp_host_alloc(struct device *parent, size_t size) } EXPORT_SYMBOL(mcp_host_alloc); -int mcp_host_register(struct mcp *mcp) +int mcp_host_add(struct mcp *mcp) { dev_set_name(&mcp->attached_device, "mcp0"); - return device_register(&mcp->attached_device); + return device_add(&mcp->attached_device); } -EXPORT_SYMBOL(mcp_host_register); +EXPORT_SYMBOL(mcp_host_add); -void mcp_host_unregister(struct mcp *mcp) +void mcp_host_del(struct mcp *mcp) { - device_unregister(&mcp->attached_device); + device_del(&mcp->attached_device); } -EXPORT_SYMBOL(mcp_host_unregister); +EXPORT_SYMBOL(mcp_host_del); + +void mcp_host_free(struct mcp *mcp) +{ + put_device(&mcp->attached_device); +} +EXPORT_SYMBOL(mcp_host_free); int mcp_driver_register(struct mcp_driver *mcpdrv) { diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 02c53a0766c..33cadc0ec12 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -195,10 +195,11 @@ static int mcp_sa11x0_probe(struct platform_device *pdev) mcp->rw_timeout = (64 * 3 * 1000000 + mcp->sclk_rate - 1) / mcp->sclk_rate; - ret = mcp_host_register(mcp); + ret = mcp_host_add(mcp); if (ret == 0) goto out; + mcp_host_free(mcp); release: release_mem_region(0x80060000, 0x60); platform_set_drvdata(pdev, NULL); @@ -212,7 +213,8 @@ static int mcp_sa11x0_remove(struct platform_device *dev) struct mcp *mcp = platform_get_drvdata(dev); platform_set_drvdata(dev, NULL); - mcp_host_unregister(mcp); + mcp_host_del(mcp); + mcp_host_free(mcp); release_mem_region(0x80060000, 0x60); return 0; diff --git a/include/linux/mfd/mcp.h b/include/linux/mfd/mcp.h index f88c1cc0cb0..79a6b13ba20 100644 --- a/include/linux/mfd/mcp.h +++ b/include/linux/mfd/mcp.h @@ -47,8 +47,9 @@ void mcp_disable(struct mcp *); #define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate) struct mcp *mcp_host_alloc(struct device *, size_t); -int mcp_host_register(struct mcp *); -void mcp_host_unregister(struct mcp *); +int mcp_host_add(struct mcp *); +void mcp_host_del(struct mcp *); +void mcp_host_free(struct mcp *); struct mcp_driver { struct device_driver drv; From 7658e7f9a8122b0678e4b4280308560aa5444bd5 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 12 Jan 2012 19:04:43 +0000 Subject: [PATCH 004/125] MFD: mcp-sa11x0: remove DMA initializers and variables The dma_device_t variables are only ever written to by mcp-sa11x0 and never read. As the old SA11x0 DMA support will be removed, remove these so that it no longer depends on the old SA11x0 DMA definitions. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-core.c | 1 - drivers/mfd/mcp-sa11x0.c | 5 ----- drivers/mfd/ucb1x00-assabet.c | 3 --- drivers/mfd/ucb1x00-core.c | 1 - drivers/mfd/ucb1x00-ts.c | 1 - include/linux/mfd/mcp.h | 6 ------ 6 files changed, 17 deletions(-) diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c index cc764317784..280a4f8a787 100644 --- a/drivers/mfd/mcp-core.c +++ b/drivers/mfd/mcp-core.c @@ -19,7 +19,6 @@ #include #include -#include #include diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 33cadc0ec12..d2ebc641b01 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -20,7 +20,6 @@ #include #include -#include #include #include #include @@ -158,10 +157,6 @@ static int mcp_sa11x0_probe(struct platform_device *pdev) mcp->owner = THIS_MODULE; mcp->ops = &mcp_sa11x0; mcp->sclk_rate = data->sclk_rate; - mcp->dma_audio_rd = DMA_Ser4MCP0Rd; - mcp->dma_audio_wr = DMA_Ser4MCP0Wr; - mcp->dma_telco_rd = DMA_Ser4MCP1Rd; - mcp->dma_telco_wr = DMA_Ser4MCP1Wr; mcp->gpio_base = data->gpio_base; platform_set_drvdata(pdev, mcp); diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c index cea9da60850..b7be613cb50 100644 --- a/drivers/mfd/ucb1x00-assabet.c +++ b/drivers/mfd/ucb1x00-assabet.c @@ -16,9 +16,6 @@ #include #include -#include - - #define UCB1X00_ATTR(name,input)\ static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \ char *buf) \ diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index febc90cdef7..f2fb4205467 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -29,7 +29,6 @@ #include #include -#include #include static DEFINE_MUTEX(ucb1x00_mutex); diff --git a/drivers/mfd/ucb1x00-ts.c b/drivers/mfd/ucb1x00-ts.c index 63a3cbdfa3f..ec6ffb6e287 100644 --- a/drivers/mfd/ucb1x00-ts.c +++ b/drivers/mfd/ucb1x00-ts.c @@ -32,7 +32,6 @@ #include #include -#include #include #include diff --git a/include/linux/mfd/mcp.h b/include/linux/mfd/mcp.h index 79a6b13ba20..dfe7e517ad9 100644 --- a/include/linux/mfd/mcp.h +++ b/include/linux/mfd/mcp.h @@ -10,8 +10,6 @@ #ifndef MCP_H #define MCP_H -#include - struct mcp_ops; struct mcp { @@ -21,10 +19,6 @@ struct mcp { int use_count; unsigned int sclk_rate; unsigned int rw_timeout; - dma_device_t dma_audio_rd; - dma_device_t dma_audio_wr; - dma_device_t dma_telco_rd; - dma_device_t dma_telco_wr; struct device attached_device; int gpio_base; }; From e36e26a8b761d1a601e284e2b5d8aff84de3b756 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 20 Jan 2012 22:24:07 +0000 Subject: [PATCH 005/125] MFD: mcp-sa11x0: move setup of PPC unit out of mcp-sa11x0.c Patch taken from af9081ae64 (ARM: sa1100: Refactor mcp-sa11x0 to use platform resources.) by Jochen Friedrich , and consolidated to use a common function. Move the setup of the PPC unit out of mcp-sa11x0 into the core SA11x0 code, and call it from each platforms initialization file. This centralizes the setup of the PPC unit while not polluting the mcp-sa11x0 driver with these details. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 2 ++ arch/arm/mach-sa1100/cerf.c | 1 + arch/arm/mach-sa1100/collie.c | 2 ++ arch/arm/mach-sa1100/generic.c | 10 ++++++++++ arch/arm/mach-sa1100/generic.h | 1 + arch/arm/mach-sa1100/lart.c | 1 + arch/arm/mach-sa1100/shannon.c | 1 + arch/arm/mach-sa1100/simpad.c | 1 + drivers/mfd/mcp-sa11x0.c | 9 --------- 9 files changed, 19 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 0c4b76ab4d8..3a191456837 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -231,6 +231,8 @@ static void __init assabet_init(void) PPDR |= PPC_TXD3 | PPC_TXD1; PPSR |= PPC_TXD3 | PPC_TXD1; + sa11x0_ppc_configure_mcp(); + sa1100fb_lcd_power = assabet_lcd_power; sa1100fb_backlight_power = assabet_backlight_power; diff --git a/arch/arm/mach-sa1100/cerf.c b/arch/arm/mach-sa1100/cerf.c index 11bb6d0b9be..bc11879f80c 100644 --- a/arch/arm/mach-sa1100/cerf.c +++ b/arch/arm/mach-sa1100/cerf.c @@ -128,6 +128,7 @@ static struct mcp_plat_data cerf_mcp_data = { static void __init cerf_init(void) { + sa11x0_ppc_configure_mcp(); platform_add_devices(cerf_devices, ARRAY_SIZE(cerf_devices)); sa11x0_register_mtd(&cerf_flash_data, &cerf_flash_resource, 1); sa11x0_register_mcp(&cerf_mcp_data); diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c index b9060e236de..efa2bc132cb 100644 --- a/arch/arm/mach-sa1100/collie.c +++ b/arch/arm/mach-sa1100/collie.c @@ -341,6 +341,8 @@ static void __init collie_init(void) GPSR |= _COLLIE_GPIO_UCB1x00_RESET; + sa11x0_ppc_configure_mcp(); + platform_scoop_config = &collie_pcmcia_config; diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 480d2ea46b0..1416094cc01 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -240,6 +240,16 @@ static struct platform_device sa11x0mcp_device = { .resource = sa11x0mcp_resources, }; +void __init sa11x0_ppc_configure_mcp(void) +{ + /* Setup the PPC unit for the MCP */ + PPDR &= ~PPC_RXD4; + PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; + PSDR |= PPC_RXD4; + PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); + PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); +} + void sa11x0_register_mcp(struct mcp_plat_data *data) { sa11x0_register_device(&sa11x0mcp_device, data); diff --git a/arch/arm/mach-sa1100/generic.h b/arch/arm/mach-sa1100/generic.h index 33268cf6be3..9236ff42bd1 100644 --- a/arch/arm/mach-sa1100/generic.h +++ b/arch/arm/mach-sa1100/generic.h @@ -39,4 +39,5 @@ struct irda_platform_data; void sa11x0_register_irda(struct irda_platform_data *irda); struct mcp_plat_data; +void sa11x0_ppc_configure_mcp(void); void sa11x0_register_mcp(struct mcp_plat_data *data); diff --git a/arch/arm/mach-sa1100/lart.c b/arch/arm/mach-sa1100/lart.c index af4e2761f3d..eba64b78150 100644 --- a/arch/arm/mach-sa1100/lart.c +++ b/arch/arm/mach-sa1100/lart.c @@ -28,6 +28,7 @@ static struct mcp_plat_data lart_mcp_data = { static void __init lart_init(void) { + sa11x0_ppc_configure_mcp(); sa11x0_register_mcp(&lart_mcp_data); } diff --git a/arch/arm/mach-sa1100/shannon.c b/arch/arm/mach-sa1100/shannon.c index 318b2b766a0..3efb4ac6224 100644 --- a/arch/arm/mach-sa1100/shannon.c +++ b/arch/arm/mach-sa1100/shannon.c @@ -59,6 +59,7 @@ static struct mcp_plat_data shannon_mcp_data = { static void __init shannon_init(void) { + sa11x0_ppc_configure_mcp(); sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1); sa11x0_register_mcp(&shannon_mcp_data); } diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index e17c04d6e32..3aa36ec2103 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -376,6 +376,7 @@ static int __init simpad_init(void) pm_power_off = simpad_power_off; + sa11x0_ppc_configure_mcp(); sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources, ARRAY_SIZE(simpad_flash_resources)); sa11x0_register_mcp(&simpad_mcp_data); diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index d2ebc641b01..5373a7a835c 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -165,15 +165,6 @@ static int mcp_sa11x0_probe(struct platform_device *pdev) ASSABET_BCR_set(ASSABET_BCR_CODEC_RST); } - /* - * Setup the PPC unit correctly. - */ - PPDR &= ~PPC_RXD4; - PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; - PSDR |= PPC_RXD4; - PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); - PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); - /* * Initialise device. Note that we initially * set the sampling rate to minimum. From c4592ce4e8f69d78711d53f0a42ec1b4dbf00cde Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 20 Jan 2012 22:30:15 +0000 Subject: [PATCH 006/125] MFD: mcp-sa11x0: add .owner initializer Patch partly taken from af9081ae64 (ARM: sa1100: Refactor mcp-sa11x0 to use platform resources.) by Jochen Friedrich Move the MODULE_ALIAS() alongside the other MODULE_* definitions, and use DRIVER_NAME to ensure that the driver is consistently named. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-sa11x0.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 5373a7a835c..703e76a7700 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -27,6 +27,7 @@ #include +#define DRIVER_NAME "sa11x0-mcp" struct mcp_sa11x0 { u32 mccr0; @@ -227,18 +228,14 @@ static int mcp_sa11x0_resume(struct platform_device *dev) return 0; } -/* - * The driver for the SA11x0 MCP port. - */ -MODULE_ALIAS("platform:sa11x0-mcp"); - static struct platform_driver mcp_sa11x0_driver = { .probe = mcp_sa11x0_probe, .remove = mcp_sa11x0_remove, .suspend = mcp_sa11x0_suspend, .resume = mcp_sa11x0_resume, .driver = { - .name = "sa11x0-mcp", + .name = DRIVER_NAME, + .owner = THIS_MODULE, }, }; @@ -247,6 +244,7 @@ static struct platform_driver mcp_sa11x0_driver = { */ module_platform_driver(mcp_sa11x0_driver); +MODULE_ALIAS("platform:" DRIVER_NAME); MODULE_AUTHOR("Russell King "); MODULE_DESCRIPTION("SA11x0 multimedia communications port driver"); MODULE_LICENSE("GPL"); From 45c7f75fd4b57035cd35954986a2faefb07dac9d Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 20 Jan 2012 23:09:42 +0000 Subject: [PATCH 007/125] MFD: mcp-sa11x0: convert mcp-sa11x0 to use platform resources Patch taken from af9081ae64 (ARM: sa1100: Refactor mcp-sa11x0 to use platform resources.) by Jochen Friedrich , and fixes applied. We can safely do this now that we have sanitized host removal; the original patch had use-after-free bugs in the removal code. Not only that, but there was no checking of the ioremap() return. The final change over Jochen's patch is that we wrap the base pointer selection inside the various register indexes, which reduces the possibility of the wrong register index being used. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- arch/arm/mach-sa1100/generic.c | 5 ++ drivers/mfd/mcp-sa11x0.c | 141 +++++++++++++++++++++++---------- 2 files changed, 104 insertions(+), 42 deletions(-) diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 1416094cc01..9379c53d301 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -221,6 +221,11 @@ static struct resource sa11x0mcp_resources[] = { .flags = IORESOURCE_MEM, }, [1] = { + .start = __PREG(Ser4MCCR1), + .end = __PREG(Ser4MCCR1) + 4 - 1, + .flags = IORESOURCE_MEM, + }, + [2] = { .start = IRQ_Ser4MCP, .end = IRQ_Ser4MCP, .flags = IORESOURCE_IRQ, diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 703e76a7700..4d06db72bb9 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -13,6 +13,7 @@ */ #include #include +#include #include #include #include @@ -30,34 +31,44 @@ #define DRIVER_NAME "sa11x0-mcp" struct mcp_sa11x0 { - u32 mccr0; - u32 mccr1; + void __iomem *base0; + void __iomem *base1; + u32 mccr0; + u32 mccr1; }; +/* Register offsets */ +#define MCCR0(m) ((m)->base0 + 0x00) +#define MCDR0(m) ((m)->base0 + 0x08) +#define MCDR1(m) ((m)->base0 + 0x0c) +#define MCDR2(m) ((m)->base0 + 0x10) +#define MCSR(m) ((m)->base0 + 0x18) +#define MCCR1(m) ((m)->base1 + 0x00) + #define priv(mcp) ((struct mcp_sa11x0 *)mcp_priv(mcp)) static void mcp_sa11x0_set_telecom_divisor(struct mcp *mcp, unsigned int divisor) { - unsigned int mccr0; + struct mcp_sa11x0 *m = priv(mcp); divisor /= 32; - mccr0 = Ser4MCCR0 & ~0x00007f00; - mccr0 |= divisor << 8; - Ser4MCCR0 = mccr0; + m->mccr0 &= ~0x00007f00; + m->mccr0 |= divisor << 8; + writel_relaxed(m->mccr0, MCCR0(m)); } static void mcp_sa11x0_set_audio_divisor(struct mcp *mcp, unsigned int divisor) { - unsigned int mccr0; + struct mcp_sa11x0 *m = priv(mcp); divisor /= 32; - mccr0 = Ser4MCCR0 & ~0x0000007f; - mccr0 |= divisor; - Ser4MCCR0 = mccr0; + m->mccr0 &= ~0x0000007f; + m->mccr0 |= divisor; + writel_relaxed(m->mccr0, MCCR0(m)); } /* @@ -69,14 +80,15 @@ mcp_sa11x0_set_audio_divisor(struct mcp *mcp, unsigned int divisor) static void mcp_sa11x0_write(struct mcp *mcp, unsigned int reg, unsigned int val) { + struct mcp_sa11x0 *m = priv(mcp); int ret = -ETIME; int i; - Ser4MCDR2 = reg << 17 | MCDR2_Wr | (val & 0xffff); + writel_relaxed(reg << 17 | MCDR2_Wr | (val & 0xffff), MCDR2(m)); for (i = 0; i < 2; i++) { udelay(mcp->rw_timeout); - if (Ser4MCSR & MCSR_CWC) { + if (readl_relaxed(MCSR(m)) & MCSR_CWC) { ret = 0; break; } @@ -95,15 +107,16 @@ mcp_sa11x0_write(struct mcp *mcp, unsigned int reg, unsigned int val) static unsigned int mcp_sa11x0_read(struct mcp *mcp, unsigned int reg) { + struct mcp_sa11x0 *m = priv(mcp); int ret = -ETIME; int i; - Ser4MCDR2 = reg << 17 | MCDR2_Rd; + writel_relaxed(reg << 17 | MCDR2_Rd, MCDR2(m)); for (i = 0; i < 2; i++) { udelay(mcp->rw_timeout); - if (Ser4MCSR & MCSR_CRC) { - ret = Ser4MCDR2 & 0xffff; + if (readl_relaxed(MCSR(m)) & MCSR_CRC) { + ret = readl_relaxed(MCDR2(m)) & 0xffff; break; } } @@ -116,13 +129,19 @@ mcp_sa11x0_read(struct mcp *mcp, unsigned int reg) static void mcp_sa11x0_enable(struct mcp *mcp) { - Ser4MCSR = -1; - Ser4MCCR0 |= MCCR0_MCE; + struct mcp_sa11x0 *m = priv(mcp); + + writel(-1, MCSR(m)); + m->mccr0 |= MCCR0_MCE; + writel_relaxed(m->mccr0, MCCR0(m)); } static void mcp_sa11x0_disable(struct mcp *mcp) { - Ser4MCCR0 &= ~MCCR0_MCE; + struct mcp_sa11x0 *m = priv(mcp); + + m->mccr0 &= ~MCCR0_MCE; + writel_relaxed(m->mccr0, MCCR0(m)); } /* @@ -137,22 +156,38 @@ static struct mcp_ops mcp_sa11x0 = { .disable = mcp_sa11x0_disable, }; -static int mcp_sa11x0_probe(struct platform_device *pdev) +static int mcp_sa11x0_probe(struct platform_device *dev) { - struct mcp_plat_data *data = pdev->dev.platform_data; + struct mcp_plat_data *data = dev->dev.platform_data; + struct resource *mem0, *mem1; + struct mcp_sa11x0 *m; struct mcp *mcp; int ret; if (!data) return -ENODEV; - if (!request_mem_region(0x80060000, 0x60, "sa11x0-mcp")) - return -EBUSY; + mem0 = platform_get_resource(dev, IORESOURCE_MEM, 0); + mem1 = platform_get_resource(dev, IORESOURCE_MEM, 1); + if (!mem0 || !mem1) + return -ENXIO; - mcp = mcp_host_alloc(&pdev->dev, sizeof(struct mcp_sa11x0)); + if (!request_mem_region(mem0->start, resource_size(mem0), + DRIVER_NAME)) { + ret = -EBUSY; + goto err_mem0; + } + + if (!request_mem_region(mem1->start, resource_size(mem1), + DRIVER_NAME)) { + ret = -EBUSY; + goto err_mem1; + } + + mcp = mcp_host_alloc(&dev->dev, sizeof(struct mcp_sa11x0)); if (!mcp) { ret = -ENOMEM; - goto release; + goto err_alloc; } mcp->owner = THIS_MODULE; @@ -160,7 +195,18 @@ static int mcp_sa11x0_probe(struct platform_device *pdev) mcp->sclk_rate = data->sclk_rate; mcp->gpio_base = data->gpio_base; - platform_set_drvdata(pdev, mcp); + m = priv(mcp); + m->mccr0 = data->mccr0 | 0x7f7f; + m->mccr1 = data->mccr1; + + m->base0 = ioremap(mem0->start, resource_size(mem0)); + m->base1 = ioremap(mem1->start, resource_size(mem1)); + if (!m->base0 || !m->base1) { + ret = -ENOMEM; + goto err_ioremap; + } + + platform_set_drvdata(dev, mcp); if (machine_is_assabet()) { ASSABET_BCR_set(ASSABET_BCR_CODEC_RST); @@ -170,9 +216,9 @@ static int mcp_sa11x0_probe(struct platform_device *pdev) * Initialise device. Note that we initially * set the sampling rate to minimum. */ - Ser4MCSR = -1; - Ser4MCCR1 = data->mccr1; - Ser4MCCR0 = data->mccr0 | 0x7f7f; + writel_relaxed(-1, MCSR(m)); + writel_relaxed(m->mccr1, MCCR1(m)); + writel_relaxed(m->mccr0, MCCR0(m)); /* * Calculate the read/write timeout (us) from the bit clock @@ -184,46 +230,57 @@ static int mcp_sa11x0_probe(struct platform_device *pdev) ret = mcp_host_add(mcp); if (ret == 0) - goto out; + return 0; + platform_set_drvdata(dev, NULL); + + err_ioremap: + iounmap(m->base1); + iounmap(m->base0); mcp_host_free(mcp); - release: - release_mem_region(0x80060000, 0x60); - platform_set_drvdata(pdev, NULL); - - out: + err_alloc: + release_mem_region(mem1->start, resource_size(mem1)); + err_mem1: + release_mem_region(mem0->start, resource_size(mem0)); + err_mem0: return ret; } static int mcp_sa11x0_remove(struct platform_device *dev) { struct mcp *mcp = platform_get_drvdata(dev); + struct mcp_sa11x0 *m = priv(mcp); + struct resource *mem0, *mem1; + + mem0 = platform_get_resource(dev, IORESOURCE_MEM, 0); + mem1 = platform_get_resource(dev, IORESOURCE_MEM, 1); platform_set_drvdata(dev, NULL); mcp_host_del(mcp); + iounmap(m->base1); + iounmap(m->base0); mcp_host_free(mcp); - release_mem_region(0x80060000, 0x60); + release_mem_region(mem1->start, resource_size(mem1)); + release_mem_region(mem0->start, resource_size(mem0)); return 0; } static int mcp_sa11x0_suspend(struct platform_device *dev, pm_message_t state) { - struct mcp *mcp = platform_get_drvdata(dev); + struct mcp_sa11x0 *m = priv(platform_get_drvdata(dev)); - priv(mcp)->mccr0 = Ser4MCCR0; - priv(mcp)->mccr1 = Ser4MCCR1; - Ser4MCCR0 &= ~MCCR0_MCE; + writel(m->mccr0 & ~MCCR0_MCE, MCCR0(m)); return 0; } static int mcp_sa11x0_resume(struct platform_device *dev) { - struct mcp *mcp = platform_get_drvdata(dev); + struct mcp_sa11x0 *m = priv(platform_get_drvdata(dev)); - Ser4MCCR1 = priv(mcp)->mccr1; - Ser4MCCR0 = priv(mcp)->mccr0; + writel_relaxed(m->mccr1, MCCR1(m)); + writel_relaxed(m->mccr0, MCCR0(m)); return 0; } From 2796e397373a15ece69267ed1bbb9f61435a3ac7 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 09:34:30 +0000 Subject: [PATCH 008/125] MFD: mcp-sa11x0: convert to use dev_pm_ops Convert the sa11x0 MCP driver to use dev_pm_ops rather than the legacy members in the platform driver. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-sa11x0.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 4d06db72bb9..46167f67612 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -266,33 +267,38 @@ static int mcp_sa11x0_remove(struct platform_device *dev) return 0; } -static int mcp_sa11x0_suspend(struct platform_device *dev, pm_message_t state) +#ifdef CONFIG_PM_SLEEP +static int mcp_sa11x0_suspend(struct device *dev) { - struct mcp_sa11x0 *m = priv(platform_get_drvdata(dev)); + struct mcp_sa11x0 *m = priv(dev_get_drvdata(dev)); writel(m->mccr0 & ~MCCR0_MCE, MCCR0(m)); return 0; } -static int mcp_sa11x0_resume(struct platform_device *dev) +static int mcp_sa11x0_resume(struct device *dev) { - struct mcp_sa11x0 *m = priv(platform_get_drvdata(dev)); + struct mcp_sa11x0 *m = priv(dev_get_drvdata(dev)); writel_relaxed(m->mccr1, MCCR1(m)); writel_relaxed(m->mccr0, MCCR0(m)); return 0; } +#endif + +static const struct dev_pm_ops mcp_sa11x0_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mcp_sa11x0_suspend, mcp_sa11x0_resume) +}; static struct platform_driver mcp_sa11x0_driver = { .probe = mcp_sa11x0_probe, .remove = mcp_sa11x0_remove, - .suspend = mcp_sa11x0_suspend, - .resume = mcp_sa11x0_resume, .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, + .pm = &mcp_sa11x0_pm_ops, }, }; From a6aecae29affdd1a84198afe45ef9e13ecbf9826 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 18:03:00 +0000 Subject: [PATCH 009/125] MFD: mcp-sa11x0: use _noirq resume methods The genirq code requires early access to interrupt controllers. In order to allow this, we need to resume the MCP via the _noirq methods instead of the standard methods. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-sa11x0.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 46167f67612..420710b19f2 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -289,7 +289,14 @@ static int mcp_sa11x0_resume(struct device *dev) #endif static const struct dev_pm_ops mcp_sa11x0_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(mcp_sa11x0_suspend, mcp_sa11x0_resume) +#ifdef CONFIG_PM_SLEEP + .suspend = mcp_sa11x0_suspend, + .freeze = mcp_sa11x0_suspend, + .poweroff = mcp_sa11x0_suspend, + .resume_noirq = mcp_sa11x0_resume, + .thaw_noirq = mcp_sa11x0_resume, + .restore_noirq = mcp_sa11x0_resume, +#endif }; static struct platform_driver mcp_sa11x0_driver = { From 366a3591e0c1e8c1544cd8690368658a837a0846 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 19 Dec 2011 13:50:21 +0000 Subject: [PATCH 010/125] MTD: sa11x0: Remove shutdown handler Commit c4a9f88daf ([MTD] [NOR] fix ctrl-alt-del can't reboot for intel flash bug) interferes with this work-around, causing MTD to issue this warning: Flash device refused suspend due to active operation (state 0) The commit makes our work-around in the map driver unnecessary, so let's remove it. Signed-off-by: Russell King --- drivers/mtd/maps/sa1100-flash.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c index 50282199770..c7355692ea8 100644 --- a/drivers/mtd/maps/sa1100-flash.c +++ b/drivers/mtd/maps/sa1100-flash.c @@ -373,21 +373,9 @@ static int __exit sa1100_mtd_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static void sa1100_mtd_shutdown(struct platform_device *dev) -{ - struct sa_info *info = platform_get_drvdata(dev); - if (info && mtd_suspend(info->mtd) == 0) - mtd_resume(info->mtd); -} -#else -#define sa1100_mtd_shutdown NULL -#endif - static struct platform_driver sa1100_mtd_driver = { .probe = sa1100_mtd_probe, .remove = __exit_p(sa1100_mtd_remove), - .shutdown = sa1100_mtd_shutdown, .driver = { .name = "sa1100-mtd", .owner = THIS_MODULE, From a6e68168f1c8a303116778d7213d64e0f67b9340 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 15:51:07 +0000 Subject: [PATCH 011/125] MTD: sa11x0: remove definitions and code left for documentation purposes /* * This is here for documentation purposes only - until these people * submit their machine types. It will be gone January 2005. */ It's now seven years after that date, so let's remove this. Signed-off-by: Russell King --- drivers/mtd/maps/sa1100-flash.c | 100 -------------------------------- 1 file changed, 100 deletions(-) diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c index c7355692ea8..cbc3b786791 100644 --- a/drivers/mtd/maps/sa1100-flash.c +++ b/drivers/mtd/maps/sa1100-flash.c @@ -23,106 +23,6 @@ #include #include -#if 0 -/* - * This is here for documentation purposes only - until these people - * submit their machine types. It will be gone January 2005. - */ -static struct mtd_partition consus_partitions[] = { - { - .name = "Consus boot firmware", - .offset = 0, - .size = 0x00040000, - .mask_flags = MTD_WRITABLE, /* force read-only */ - }, { - .name = "Consus kernel", - .offset = 0x00040000, - .size = 0x00100000, - .mask_flags = 0, - }, { - .name = "Consus disk", - .offset = 0x00140000, - /* The rest (up to 16M) for jffs. We could put 0 and - make it find the size automatically, but right now - i have 32 megs. jffs will use all 32 megs if given - the chance, and this leads to horrible problems - when you try to re-flash the image because blob - won't erase the whole partition. */ - .size = 0x01000000 - 0x00140000, - .mask_flags = 0, - }, { - /* this disk is a secondary disk, which can be used as - needed, for simplicity, make it the size of the other - consus partition, although realistically it could be - the remainder of the disk (depending on the file - system used) */ - .name = "Consus disk2", - .offset = 0x01000000, - .size = 0x01000000 - 0x00140000, - .mask_flags = 0, - } -}; - -/* Frodo has 2 x 16M 28F128J3A flash chips in bank 0: */ -static struct mtd_partition frodo_partitions[] = -{ - { - .name = "bootloader", - .size = 0x00040000, - .offset = 0x00000000, - .mask_flags = MTD_WRITEABLE - }, { - .name = "bootloader params", - .size = 0x00040000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE - }, { - .name = "kernel", - .size = 0x00100000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE - }, { - .name = "ramdisk", - .size = 0x00400000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE - }, { - .name = "file system", - .size = MTDPART_SIZ_FULL, - .offset = MTDPART_OFS_APPEND - } -}; - -static struct mtd_partition jornada56x_partitions[] = { - { - .name = "bootldr", - .size = 0x00040000, - .offset = 0, - .mask_flags = MTD_WRITEABLE, - }, { - .name = "rootfs", - .size = MTDPART_SIZ_FULL, - .offset = MTDPART_OFS_APPEND, - } -}; - -static void jornada56x_set_vpp(int vpp) -{ - if (vpp) - GPSR = GPIO_GPIO26; - else - GPCR = GPIO_GPIO26; - GPDR |= GPIO_GPIO26; -} - -/* - * Machine Phys Size set_vpp - * Consus : SA1100_CS0_PHYS SZ_32M - * Frodo : SA1100_CS0_PHYS SZ_32M - * Jornada56x: SA1100_CS0_PHYS SZ_32M jornada56x_set_vpp - */ -#endif - struct sa_subdev_info { char name[16]; struct map_info map; From cb5e2399f9e504dc78525988c85882643e915da4 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 12 Jan 2012 10:59:21 +0000 Subject: [PATCH 012/125] ARM: sa11x0: fix off-by-one resource sizes Hackkit defined its flash memory resource to be 32M + 1 byte. Jornada defined the Epson video controller resources to be one byte larger than they should be, and mis-mapped the SA-1111 companion chip one byte smaller than it should be. Fix these. Signed-off-by: Russell King --- arch/arm/mach-sa1100/hackkit.c | 2 +- arch/arm/mach-sa1100/jornada720.c | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-sa1100/hackkit.c b/arch/arm/mach-sa1100/hackkit.c index c01bb36db94..9092b3aff53 100644 --- a/arch/arm/mach-sa1100/hackkit.c +++ b/arch/arm/mach-sa1100/hackkit.c @@ -181,7 +181,7 @@ static struct flash_platform_data hackkit_flash_data = { static struct resource hackkit_flash_resource = { .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M, + .end = SA1100_CS0_PHYS + SZ_32M - 1, .flags = IORESOURCE_MEM, }; diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c index ee121d6f048..5393b06ee2d 100644 --- a/arch/arm/mach-sa1100/jornada720.c +++ b/arch/arm/mach-sa1100/jornada720.c @@ -46,7 +46,7 @@ /* memory space (line 52 of HP's doc) */ #define SA1111REGSTART 0x40000000 -#define SA1111REGLEN 0x00001fff +#define SA1111REGLEN 0x00002000 #define EPSONREGSTART 0x48000000 #define EPSONREGLEN 0x00100000 #define EPSONFBSTART 0x48200000 @@ -176,12 +176,12 @@ static struct s1d13xxxfb_pdata s1d13xxxfb_data = { static struct resource s1d13xxxfb_resources[] = { [0] = { .start = EPSONFBSTART, - .end = EPSONFBSTART + EPSONFBLEN, + .end = EPSONFBSTART + EPSONFBLEN - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = EPSONREGSTART, - .end = EPSONREGSTART + EPSONREGLEN, + .end = EPSONREGSTART + EPSONREGLEN - 1, .flags = IORESOURCE_MEM, } }; @@ -199,7 +199,7 @@ static struct platform_device s1d13xxxfb_device = { static struct resource sa1111_resources[] = { [0] = { .start = SA1111REGSTART, - .end = SA1111REGSTART + SA1111REGLEN, + .end = SA1111REGSTART + SA1111REGLEN - 1, .flags = IORESOURCE_MEM, }, [1] = { From f3bb3d7422b4161df31e2fd2e503897926d8ffe7 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 23 Jan 2012 18:39:21 +0000 Subject: [PATCH 013/125] ARM: sa11x0: fix sleep entry Sometimes, we get stuck while trying to enter sleep. This seems to occur if we do not have udelay() in the instruction cache. Avoid this by requesting a short delay prior to modifying the SDRAM timings. Signed-off-by: Russell King --- arch/arm/mach-sa1100/sleep.S | 37 +++++++++++++++++++++--------------- 1 file changed, 22 insertions(+), 15 deletions(-) diff --git a/arch/arm/mach-sa1100/sleep.S b/arch/arm/mach-sa1100/sleep.S index e8223315b44..30cc6721665 100644 --- a/arch/arm/mach-sa1100/sleep.S +++ b/arch/arm/mach-sa1100/sleep.S @@ -26,27 +26,36 @@ * * Causes sa11x0 to enter sleep state * + * Must be aligned to a cacheline. */ - + .balign 32 ENTRY(sa1100_finish_suspend) @ disable clock switching mcr p15, 0, r1, c15, c2, 2 - @ Adjust memory timing before lowering CPU clock - @ Clock speed adjustment without changing memory timing makes - @ CPU hang in some cases - ldr r0, =MDREFR - ldr r1, [r0] - orr r1, r1, #MDREFR_K1DB2 - str r1, [r0] + ldr r6, =MDREFR + ldr r4, [r6] + orr r4, r4, #MDREFR_K1DB2 + ldr r5, =PPCR + + @ Pre-load __udelay into the I-cache + mov r0, #1 + bl __udelay + mov r0, r0 + + @ The following must all exist in a single cache line to + @ avoid accessing memory until this sequence is complete, + @ otherwise we occasionally hang. + + @ Adjust memory timing before lowering CPU clock + str r4, [r6] @ delay 90us and set CPU PLL to lowest speed @ fixes resume problem on high speed SA1110 mov r0, #90 bl __udelay - ldr r0, =PPCR mov r1, #0 - str r1, [r0] + str r1, [r5] mov r0, #90 bl __udelay @@ -85,12 +94,10 @@ ENTRY(sa1100_finish_suspend) bic r5, r5, #FMsk(MSC_RT) bic r5, r5, #FMsk(MSC_RT)<<16 - ldr r6, =MDREFR - ldr r7, [r6] -bic r7, r7, #0x0000FF00 -bic r7, r7, #0x000000F0 -orr r8, r7, #MDREFR_SLFRSH + bic r7, r7, #0x0000FF00 + bic r7, r7, #0x000000F0 + orr r8, r7, #MDREFR_SLFRSH ldr r9, =MDCNFG ldr r10, [r9] From 80ea2065e186d8d69b617770ae7fe51dfea6ba90 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 3 Feb 2012 18:16:45 +0000 Subject: [PATCH 014/125] ARM: sa11x0: fix section mismatch warnings Neponset calls sa1110_mb_disable() from __devinit code, but sa1110_mb_disable() is marked __init, and so causes a section mismatch warning. As sa1110_mb_enable() and sa1110_mb_disable() need to be callable from suspend/resume paths as well, they must not be marked __init or __devinit. Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 2 +- arch/arm/mach-sa1100/generic.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index 61691cdbdcf..bf508a78aa3 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -87,7 +87,7 @@ #define IRQ_S0_BVD1_STSCHG (53) #define IRQ_S1_BVD1_STSCHG (54) -extern void __init sa1110_mb_enable(void); +extern void sa1110_mb_enable(void); /* * We keep the following data for the overall SA1111. Note that the diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index bb10ee2cb89..0e356bb89fb 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -428,7 +428,7 @@ void __init sa1100_map_io(void) * the MBGNT signal false to ensure the SA1111 doesn't own the * SDRAM bus. */ -void __init sa1110_mb_disable(void) +void sa1110_mb_disable(void) { unsigned long flags; @@ -447,7 +447,7 @@ void __init sa1110_mb_disable(void) * If the system is going to use the SA-1111 DMA engines, set up * the memory bus request/grant pins. */ -void __devinit sa1110_mb_enable(void) +void sa1110_mb_enable(void) { unsigned long flags; From a181099e2f74dffe45487704cf0e97fd007b2628 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 12 Jan 2012 10:25:29 +0000 Subject: [PATCH 015/125] ARM: sa11x0: convert to use DEFINE_RES_xxx macros Convert StrongARM-11x0 platforms and core SoC code to use the DEFINE_RES_xxx macros. Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 11 +--- arch/arm/mach-sa1100/badge4.c | 19 ++---- arch/arm/mach-sa1100/cerf.c | 13 +--- arch/arm/mach-sa1100/collie.c | 24 ++----- arch/arm/mach-sa1100/generic.c | 93 +++++---------------------- arch/arm/mach-sa1100/h3xxx.c | 13 +--- arch/arm/mach-sa1100/hackkit.c | 7 +- arch/arm/mach-sa1100/irq.c | 7 +- arch/arm/mach-sa1100/jornada720.c | 31 ++------- arch/arm/mach-sa1100/nanoengine.c | 11 +--- arch/arm/mach-sa1100/neponset.c | 39 ++--------- arch/arm/mach-sa1100/pci-nanoengine.c | 8 +-- arch/arm/mach-sa1100/pleb.c | 24 ++----- arch/arm/mach-sa1100/shannon.c | 7 +- arch/arm/mach-sa1100/simpad.c | 11 +--- 15 files changed, 61 insertions(+), 257 deletions(-) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 0c4b76ab4d8..642f3b3df21 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -152,15 +152,8 @@ static struct flash_platform_data assabet_flash_data = { }; static struct resource assabet_flash_resources[] = { - { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, - }, { - .start = SA1100_CS1_PHYS, - .end = SA1100_CS1_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, - } + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M), + DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_32M), }; diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c index b07a2c024cb..ce2dbdf4ba1 100644 --- a/arch/arm/mach-sa1100/badge4.c +++ b/arch/arm/mach-sa1100/badge4.c @@ -39,16 +39,8 @@ #include "generic.h" static struct resource sa1111_resources[] = { - [0] = { - .start = BADGE4_SA1111_BASE, - .end = BADGE4_SA1111_BASE + 0x00001fff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = BADGE4_IRQ_GPIO_SA1111, - .end = BADGE4_IRQ_GPIO_SA1111, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000), + [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111), }; static struct sa1111_platform_data sa1111_info = { @@ -121,11 +113,8 @@ static struct flash_platform_data badge4_flash_data = { .nr_parts = ARRAY_SIZE(badge4_partitions), }; -static struct resource badge4_flash_resource = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_64M - 1, - .flags = IORESOURCE_MEM, -}; +static struct resource badge4_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M); static int five_v_on __initdata = 0; diff --git a/arch/arm/mach-sa1100/cerf.c b/arch/arm/mach-sa1100/cerf.c index 11bb6d0b9be..c2f9ba3a957 100644 --- a/arch/arm/mach-sa1100/cerf.c +++ b/arch/arm/mach-sa1100/cerf.c @@ -33,11 +33,7 @@ #include "generic.h" static struct resource cerfuart2_resources[] = { - [0] = { - .start = 0x80030000, - .end = 0x8003ffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(0x80030000, SZ_64K), }; static struct platform_device cerfuart2_device = { @@ -87,11 +83,8 @@ static struct flash_platform_data cerf_flash_data = { .nr_parts = ARRAY_SIZE(cerf_partitions), }; -static struct resource cerf_flash_resource = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, -}; +static struct resource cerf_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); static void __init cerf_init_irq(void) { diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c index fd5652118ed..dbe5cf719f7 100644 --- a/arch/arm/mach-sa1100/collie.c +++ b/arch/arm/mach-sa1100/collie.c @@ -48,11 +48,7 @@ #include "generic.h" static struct resource collie_scoop_resources[] = { - [0] = { - .start = 0x40800000, - .end = 0x40800fff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(0x40800000, SZ_4K), }; static struct scoop_config collie_scoop_setup = { @@ -221,16 +217,8 @@ device_initcall(collie_uart_init); static struct resource locomo_resources[] = { - [0] = { - .start = 0x40000000, - .end = 0x40001fff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_GPIO25, - .end = IRQ_GPIO25, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(0x40000000, SZ_8K), + [1] = DEFINE_RES_IRQ(IRQ_GPIO25), }; static struct locomo_platform_data locomo_info = { @@ -303,11 +291,7 @@ static struct flash_platform_data collie_flash_data = { }; static struct resource collie_flash_resources[] = { - { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, - } + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M), }; static void __init collie_init(void) diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 0e356bb89fb..2b33b459746 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -149,16 +149,8 @@ static void sa11x0_register_device(struct platform_device *dev, void *data) static struct resource sa11x0udc_resources[] = { - [0] = { - .start = __PREG(Ser0UDCCR), - .end = __PREG(Ser0UDCCR) + 0xffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_Ser0UDC, - .end = IRQ_Ser0UDC, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser0UDCCR), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser0UDC), }; static u64 sa11x0udc_dma_mask = 0xffffffffUL; @@ -175,16 +167,8 @@ static struct platform_device sa11x0udc_device = { }; static struct resource sa11x0uart1_resources[] = { - [0] = { - .start = __PREG(Ser1UTCR0), - .end = __PREG(Ser1UTCR0) + 0xffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_Ser1UART, - .end = IRQ_Ser1UART, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser1UTCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser1UART), }; static struct platform_device sa11x0uart1_device = { @@ -195,16 +179,8 @@ static struct platform_device sa11x0uart1_device = { }; static struct resource sa11x0uart3_resources[] = { - [0] = { - .start = __PREG(Ser3UTCR0), - .end = __PREG(Ser3UTCR0) + 0xffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_Ser3UART, - .end = IRQ_Ser3UART, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser3UTCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser3UART), }; static struct platform_device sa11x0uart3_device = { @@ -215,16 +191,8 @@ static struct platform_device sa11x0uart3_device = { }; static struct resource sa11x0mcp_resources[] = { - [0] = { - .start = __PREG(Ser4MCCR0), - .end = __PREG(Ser4MCCR0) + 0xffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_Ser4MCP, - .end = IRQ_Ser4MCP, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser4MCCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser4MCP), }; static u64 sa11x0mcp_dma_mask = 0xffffffffUL; @@ -246,16 +214,8 @@ void sa11x0_register_mcp(struct mcp_plat_data *data) } static struct resource sa11x0ssp_resources[] = { - [0] = { - .start = 0x80070000, - .end = 0x8007ffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_Ser4SSP, - .end = IRQ_Ser4SSP, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(0x80070000, SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser4SSP), }; static u64 sa11x0ssp_dma_mask = 0xffffffffUL; @@ -272,16 +232,8 @@ static struct platform_device sa11x0ssp_device = { }; static struct resource sa11x0fb_resources[] = { - [0] = { - .start = 0xb0100000, - .end = 0xb010ffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_LCD, - .end = IRQ_LCD, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(0xb0100000, SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_LCD), }; static struct platform_device sa11x0fb_device = { @@ -314,23 +266,10 @@ void sa11x0_register_mtd(struct flash_platform_data *flash, } static struct resource sa11x0ir_resources[] = { - { - .start = __PREG(Ser2UTCR0), - .end = __PREG(Ser2UTCR0) + 0x24 - 1, - .flags = IORESOURCE_MEM, - }, { - .start = __PREG(Ser2HSCR0), - .end = __PREG(Ser2HSCR0) + 0x1c - 1, - .flags = IORESOURCE_MEM, - }, { - .start = __PREG(Ser2HSCR2), - .end = __PREG(Ser2HSCR2) + 0x04 - 1, - .flags = IORESOURCE_MEM, - }, { - .start = IRQ_Ser2ICP, - .end = IRQ_Ser2ICP, - .flags = IORESOURCE_IRQ, - } + DEFINE_RES_MEM(__PREG(Ser2UTCR0), 0x24), + DEFINE_RES_MEM(__PREG(Ser2HSCR0), 0x1c), + DEFINE_RES_MEM(__PREG(Ser2HSCR2), 0x04), + DEFINE_RES_IRQ(IRQ_Ser2ICP), }; static struct platform_device sa11x0ir_device = { diff --git a/arch/arm/mach-sa1100/h3xxx.c b/arch/arm/mach-sa1100/h3xxx.c index b0784c974c2..63150e1ffe9 100644 --- a/arch/arm/mach-sa1100/h3xxx.c +++ b/arch/arm/mach-sa1100/h3xxx.c @@ -109,11 +109,8 @@ static struct flash_platform_data h3xxx_flash_data = { .nr_parts = ARRAY_SIZE(h3xxx_partitions), }; -static struct resource h3xxx_flash_resource = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, -}; +static struct resource h3xxx_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); /* @@ -186,11 +183,7 @@ static struct sa1100_port_fns h3xxx_port_fns __initdata = { */ static struct resource egpio_resources[] = { - [0] = { - .start = H3600_EGPIO_PHYS, - .end = H3600_EGPIO_PHYS + 0x4 - 1, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4), }; static struct htc_egpio_chip egpio_chips[] = { diff --git a/arch/arm/mach-sa1100/hackkit.c b/arch/arm/mach-sa1100/hackkit.c index 9092b3aff53..37d381ad546 100644 --- a/arch/arm/mach-sa1100/hackkit.c +++ b/arch/arm/mach-sa1100/hackkit.c @@ -179,11 +179,8 @@ static struct flash_platform_data hackkit_flash_data = { .nr_parts = ARRAY_SIZE(hackkit_partitions), }; -static struct resource hackkit_flash_resource = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, -}; +static struct resource hackkit_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); static void __init hackkit_init(void) { diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c index dfbf824a69f..5d12a305f53 100644 --- a/arch/arm/mach-sa1100/irq.c +++ b/arch/arm/mach-sa1100/irq.c @@ -221,11 +221,8 @@ static struct irq_chip sa1100_normal_chip = { .irq_set_wake = sa1100_set_wake, }; -static struct resource irq_resource = { - .name = "irqs", - .start = 0x90050000, - .end = 0x9005ffff, -}; +static struct resource irq_resource = + DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs"); static struct sa1100irq_state { unsigned int saved; diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c index 5393b06ee2d..8512cfcc0d9 100644 --- a/arch/arm/mach-sa1100/jornada720.c +++ b/arch/arm/mach-sa1100/jornada720.c @@ -174,16 +174,8 @@ static struct s1d13xxxfb_pdata s1d13xxxfb_data = { }; static struct resource s1d13xxxfb_resources[] = { - [0] = { - .start = EPSONFBSTART, - .end = EPSONFBSTART + EPSONFBLEN - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = EPSONREGSTART, - .end = EPSONREGSTART + EPSONREGLEN - 1, - .flags = IORESOURCE_MEM, - } + [0] = DEFINE_RES_MEM(EPSONFBSTART, EPSONFBLEN), + [1] = DEFINE_RES_MEM(EPSONREGSTART, EPSONREGLEN), }; static struct platform_device s1d13xxxfb_device = { @@ -197,16 +189,8 @@ static struct platform_device s1d13xxxfb_device = { }; static struct resource sa1111_resources[] = { - [0] = { - .start = SA1111REGSTART, - .end = SA1111REGSTART + SA1111REGLEN - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_GPIO1, - .end = IRQ_GPIO1, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(SA1111REGSTART, SA1111REGLEN), + [1] = DEFINE_RES_IRQ(IRQ_GPIO1), }; static struct sa1111_platform_data sa1111_info = { @@ -352,11 +336,8 @@ static struct flash_platform_data jornada720_flash_data = { .nr_parts = ARRAY_SIZE(jornada720_partitions), }; -static struct resource jornada720_flash_resource = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, -}; +static struct resource jornada720_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); static void __init jornada720_mach_init(void) { diff --git a/arch/arm/mach-sa1100/nanoengine.c b/arch/arm/mach-sa1100/nanoengine.c index 85f6ee67222..3923911000d 100644 --- a/arch/arm/mach-sa1100/nanoengine.c +++ b/arch/arm/mach-sa1100/nanoengine.c @@ -58,15 +58,8 @@ static struct flash_platform_data nanoengine_flash_data = { }; static struct resource nanoengine_flash_resources[] = { - { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, - }, { - .start = SA1100_CS1_PHYS, - .end = SA1100_CS1_PHYS + SZ_32M - 1, - .flags = IORESOURCE_MEM, - } + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M), + DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_32M), }; static struct map_desc nanoengine_io_desc[] __initdata = { diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index b4fa53a1427..abbe859b265 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -213,11 +213,7 @@ static struct platform_driver neponset_device_driver = { }; static struct resource neponset_resources[] = { - [0] = { - .start = 0x10000000, - .end = 0x17ffffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(0x10000000, 0x08000000), }; static struct platform_device neponset_device = { @@ -228,16 +224,8 @@ static struct platform_device neponset_device = { }; static struct resource sa1111_resources[] = { - [0] = { - .start = 0x40000000, - .end = 0x40001fff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_NEPONSET_SA1111, - .end = IRQ_NEPONSET_SA1111, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(0x40000000, SZ_8K), + [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SA1111), }; static struct sa1111_platform_data sa1111_info = { @@ -259,23 +247,10 @@ static struct platform_device sa1111_device = { }; static struct resource smc91x_resources[] = { - [0] = { - .name = "smc91x-regs", - .start = SA1100_CS3_PHYS, - .end = SA1100_CS3_PHYS + 0x01ffffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_NEPONSET_SMC9196, - .end = IRQ_NEPONSET_SMC9196, - .flags = IORESOURCE_IRQ, - }, - [2] = { - .name = "smc91x-attrib", - .start = SA1100_CS3_PHYS + 0x02000000, - .end = SA1100_CS3_PHYS + 0x03ffffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 0x02000000, "smc91x-regs"), + [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SMC9196), + [2] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, + 0x02000000, "smc91x-attrib"), }; static struct platform_device smc91x_device = { diff --git a/arch/arm/mach-sa1100/pci-nanoengine.c b/arch/arm/mach-sa1100/pci-nanoengine.c index 0d01ca78892..41bb018b310 100644 --- a/arch/arm/mach-sa1100/pci-nanoengine.c +++ b/arch/arm/mach-sa1100/pci-nanoengine.c @@ -135,12 +135,8 @@ struct pci_bus * __init pci_nanoengine_scan_bus(int nr, struct pci_sys_data *sys &sys->resources); } -static struct resource pci_io_ports = { - .name = "PCI IO", - .start = 0x400, - .end = 0x7FF, - .flags = IORESOURCE_IO, -}; +static struct resource pci_io_ports = + DEFINE_RES_IO_NAMED(0x400, 0x400, "PCI IO"); static struct resource pci_non_prefetchable_memory = { .name = "PCI non-prefetchable", diff --git a/arch/arm/mach-sa1100/pleb.c b/arch/arm/mach-sa1100/pleb.c index 9307df05353..ca5d33b6041 100644 --- a/arch/arm/mach-sa1100/pleb.c +++ b/arch/arm/mach-sa1100/pleb.c @@ -37,17 +37,9 @@ #define IRQ_GPIO_ETH0_IRQ IRQ_GPIO21 static struct resource smc91x_resources[] = { - [0] = { - .start = PLEB_ETH0_P, - .end = PLEB_ETH0_P | 0x03ffffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000), #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */ - [1] = { - .start = IRQ_GPIO_ETH0_IRQ, - .end = IRQ_GPIO_ETH0_IRQ, - .flags = IORESOURCE_IRQ, - }, + [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ), #endif }; @@ -70,16 +62,8 @@ static struct platform_device *devices[] __initdata = { * the two SA1100 lowest chip select outputs. */ static struct resource pleb_flash_resources[] = { - [0] = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_8M - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = SA1100_CS1_PHYS, - .end = SA1100_CS1_PHYS + SZ_8M - 1, - .flags = IORESOURCE_MEM, - } + [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M), + [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M), }; diff --git a/arch/arm/mach-sa1100/shannon.c b/arch/arm/mach-sa1100/shannon.c index 318b2b766a0..5fd61564984 100644 --- a/arch/arm/mach-sa1100/shannon.c +++ b/arch/arm/mach-sa1100/shannon.c @@ -46,11 +46,8 @@ static struct flash_platform_data shannon_flash_data = { .nr_parts = ARRAY_SIZE(shannon_partitions), }; -static struct resource shannon_flash_resource = { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_4M - 1, - .flags = IORESOURCE_MEM, -}; +static struct resource shannon_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_4M); static struct mcp_plat_data shannon_mcp_data = { .mccr0 = MCCR0_ADM, diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index e17c04d6e32..cdb9d197c09 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -176,15 +176,8 @@ static struct flash_platform_data simpad_flash_data = { static struct resource simpad_flash_resources [] = { - { - .start = SA1100_CS0_PHYS, - .end = SA1100_CS0_PHYS + SZ_16M -1, - .flags = IORESOURCE_MEM, - }, { - .start = SA1100_CS1_PHYS, - .end = SA1100_CS1_PHYS + SZ_16M -1, - .flags = IORESOURCE_MEM, - } + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M), + DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M), }; static struct mcp_plat_data simpad_mcp_data = { From 7186fb9fd79d6209fe7aea9dbe06b629c61b389e Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 21:17:06 +0000 Subject: [PATCH 016/125] ARM: sa11x0: assabet: deassert QMUTE to codec while codec is unpowered Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 642f3b3df21..3a3282e08a7 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -40,13 +40,13 @@ #include "generic.h" #define ASSABET_BCR_DB1110 \ - (ASSABET_BCR_SPK_OFF | ASSABET_BCR_QMUTE | \ + (ASSABET_BCR_SPK_OFF | \ ASSABET_BCR_LED_GREEN | ASSABET_BCR_LED_RED | \ ASSABET_BCR_RS232EN | ASSABET_BCR_LCD_12RGB | \ ASSABET_BCR_IRDA_MD0) #define ASSABET_BCR_DB1111 \ - (ASSABET_BCR_SPK_OFF | ASSABET_BCR_QMUTE | \ + (ASSABET_BCR_SPK_OFF | \ ASSABET_BCR_LED_GREEN | ASSABET_BCR_LED_RED | \ ASSABET_BCR_RS232EN | ASSABET_BCR_LCD_12RGB | \ ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_STEREO_LB | \ From 4f592e6d1a6711b2ef140b5c76342dbe2506c8cb Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 09:23:19 +0000 Subject: [PATCH 017/125] ARM: sa11x0: assabet: avoid glitching GPIOs when setting outputs Avoid glitching the GPIO signals during initialization, which can have undesirable effects. Ensure that the desired pin state is set before we change the GPIO pin direction to be an output. Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 3a3282e08a7..6356896587b 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -202,8 +202,8 @@ static void __init assabet_init(void) /* * Ensure that the power supply is in "high power" mode. */ - GPDR |= GPIO_GPIO16; GPSR = GPIO_GPIO16; + GPDR |= GPIO_GPIO16; /* * Ensure that these pins are set as outputs and are driving @@ -211,8 +211,8 @@ static void __init assabet_init(void) * the WS latch in the CPLD, and we don't float causing * excessive power drain. --rmk */ - GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; GPCR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; + GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; /* * Set up registers for sleep mode. From 49e01e3fb6efe1b0abfa2d5675f88f07989d621f Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 09:25:57 +0000 Subject: [PATCH 018/125] ARM: sa11x0: assabet: ensure that GPIO27 is driven GPIO27 is just connected to a CPLD input without any pull-ups or pull- downs. If GPIO27 is left as an input, it will float around mid-supply, which for CMOS inputs is the worst place for a pin to be. Ensure that this pin is driven. Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 6356896587b..e3805d4c052 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -214,6 +214,14 @@ static void __init assabet_init(void) GPCR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; + /* + * Also set GPIO27 as an output; this is used to clock UART3 + * via the FPGA and as otherwise has no pullups or pulldowns, + * so stop it floating. + */ + GPCR = GPIO_GPIO27; + GPDR |= GPIO_GPIO27; + /* * Set up registers for sleep mode. */ From 710455201f6690841e9a40bedba09ddd0a7e0620 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 16 Jan 2012 00:17:41 +0000 Subject: [PATCH 019/125] ARM: sa11x0: neponset: fix interrupt setup Since ARM was converted to genirq, the neponset IRQ implementation has gradually broken as a result of various subtle changes being introduced into genirq. It used to be that simple IRQs did not need an IRQ chip. This is no longer the case, and genirq barfs in irq_set_handler(). Fix this by introducing a dummy no-op chip, and registering it along with the flow handler. Neponset IRQs really don't have any masking ability - all we have is a status register to allow us to decode the source, and a three input OR gate inside a CPLD. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index abbe859b265..6a14d3760cc 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -138,6 +138,20 @@ static struct sa1100_port_fns neponset_port_fns __devinitdata = { .get_mctrl = neponset_get_mctrl, }; +/* + * Yes, we really do not have any kind of masking or unmasking + */ +static void nochip_noop(struct irq_data *irq) +{ +} + +static struct irq_chip nochip = { + .name = "neponset", + .irq_ack = nochip_noop, + .irq_mask = nochip_noop, + .irq_unmask = nochip_noop, +}; + static int __devinit neponset_probe(struct platform_device *dev) { sa1100_register_uart_fns(&neponset_port_fns); @@ -161,10 +175,13 @@ static int __devinit neponset_probe(struct platform_device *dev) * Setup other Neponset IRQs. SA1111 will be done by the * generic SA1111 code. */ - irq_set_handler(IRQ_NEPONSET_SMC9196, handle_simple_irq); + irq_set_chip_and_handler(IRQ_NEPONSET_SMC9196, &nochip, + handle_simple_irq); set_irq_flags(IRQ_NEPONSET_SMC9196, IRQF_VALID | IRQF_PROBE); - irq_set_handler(IRQ_NEPONSET_USAR, handle_simple_irq); + irq_set_chip_and_handler(IRQ_NEPONSET_USAR, &nochip, + handle_simple_irq); set_irq_flags(IRQ_NEPONSET_USAR, IRQF_VALID | IRQF_PROBE); + irq_set_chip(IRQ_NEPONSET_SA1111, &nochip); /* * Disable GPIO 0/1 drivers so the buttons work on the module. From 6ad1b614007c556129989b9f6b020d0d2e058121 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 16 Jan 2012 09:31:47 +0000 Subject: [PATCH 020/125] ARM: sa11x0: neponset: provide function to manipulate NCR_0 Rather than having direct register accesses to NCR_0 scattered amongst the code, provide a function instead. This contains the necessary race protection for this platform, ensuring that updates to this register are safe. Signed-off-by: Russell King --- arch/arm/mach-sa1100/include/mach/neponset.h | 4 ++++ arch/arm/mach-sa1100/neponset.c | 9 +++++++++ drivers/net/ethernet/smsc/smc91x.c | 2 +- drivers/pcmcia/sa1100_neponset.c | 7 +------ 4 files changed, 15 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-sa1100/include/mach/neponset.h b/arch/arm/mach-sa1100/include/mach/neponset.h index ffe2bc45eed..6032216e183 100644 --- a/arch/arm/mach-sa1100/include/mach/neponset.h +++ b/arch/arm/mach-sa1100/include/mach/neponset.h @@ -71,4 +71,8 @@ #define NCR_A0VPP (1<<5) #define NCR_A1VPP (1<<6) +void neponset_ncr_frob(unsigned int, unsigned int); +#define neponset_ncr_set(v) neponset_ncr_frob(0, v) +#define neponset_ncr_clear(v) neponset_ncr_frob(v, 0) + #endif diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 6a14d3760cc..10be07e2bd5 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -20,6 +20,15 @@ #include #include +void neponset_ncr_frob(unsigned int mask, unsigned int val) +{ + unsigned long flags; + + local_irq_save(flags); + NCR_0 = (NCR_0 & ~mask) | val; + local_irq_restore(flags); +} + /* * Install handler for Neponset IRQ. Note that we have to loop here * since the ETHERNET and USAR IRQs are level based, and we need to diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 64ad3ed7449..0dba0501b71 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -2281,7 +2281,7 @@ static int __devinit smc_drv_probe(struct platform_device *pdev) if (ret) goto out_release_io; #if defined(CONFIG_SA1100_ASSABET) - NCR_0 |= NCR_ENET_OSC_EN; + neponset_ncr_set(NCR_ENET_OSC_EN); #endif platform_set_drvdata(pdev, ndev); ret = smc_enable_device(pdev); diff --git a/drivers/pcmcia/sa1100_neponset.c b/drivers/pcmcia/sa1100_neponset.c index c95639b5f2a..4300a7fb3ed 100644 --- a/drivers/pcmcia/sa1100_neponset.c +++ b/drivers/pcmcia/sa1100_neponset.c @@ -94,12 +94,7 @@ neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_sta ret = sa1111_pcmcia_configure_socket(skt, state); if (ret == 0) { - unsigned long flags; - - local_irq_save(flags); - NCR_0 = (NCR_0 & ~ncr_mask) | ncr_set; - - local_irq_restore(flags); + neponset_ncr_frob(ncr_mask, ncr_set); sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set); } From 92e617d9e6f148b8301968c8b78e3cbc7bd5172e Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 22:13:00 +0000 Subject: [PATCH 021/125] ARM: sa11x0: neponset: shuffle some code around Move the IRQ handler along side the rest of the IRQ code, and rearrange the include files. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 206 ++++++++++++++++---------------- 1 file changed, 103 insertions(+), 103 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 10be07e2bd5..8fcd542d46f 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -2,24 +2,24 @@ * linux/arch/arm/mach-sa1100/neponset.c * */ -#include #include -#include #include -#include +#include #include +#include -#include #include #include #include #include #include -#include -#include #include #include +#include +#include +#include + void neponset_ncr_frob(unsigned int mask, unsigned int val) { unsigned long flags; @@ -29,66 +29,6 @@ void neponset_ncr_frob(unsigned int mask, unsigned int val) local_irq_restore(flags); } -/* - * Install handler for Neponset IRQ. Note that we have to loop here - * since the ETHERNET and USAR IRQs are level based, and we need to - * ensure that the IRQ signal is deasserted before returning. This - * is rather unfortunate. - */ -static void -neponset_irq_handler(unsigned int irq, struct irq_desc *desc) -{ - unsigned int irr; - - while (1) { - /* - * Acknowledge the parent IRQ. - */ - desc->irq_data.chip->irq_ack(&desc->irq_data); - - /* - * Read the interrupt reason register. Let's have all - * active IRQ bits high. Note: there is a typo in the - * Neponset user's guide for the SA1111 IRR level. - */ - irr = IRR ^ (IRR_ETHERNET | IRR_USAR); - - if ((irr & (IRR_ETHERNET | IRR_USAR | IRR_SA1111)) == 0) - break; - - /* - * Since there is no individual mask, we have to - * mask the parent IRQ. This is safe, since we'll - * recheck the register for any pending IRQs. - */ - if (irr & (IRR_ETHERNET | IRR_USAR)) { - desc->irq_data.chip->irq_mask(&desc->irq_data); - - /* - * Ack the interrupt now to prevent re-entering - * this neponset handler. Again, this is safe - * since we'll check the IRR register prior to - * leaving. - */ - desc->irq_data.chip->irq_ack(&desc->irq_data); - - if (irr & IRR_ETHERNET) { - generic_handle_irq(IRQ_NEPONSET_SMC9196); - } - - if (irr & IRR_USAR) { - generic_handle_irq(IRQ_NEPONSET_USAR); - } - - desc->irq_data.chip->irq_unmask(&desc->irq_data); - } - - if (irr & IRR_SA1111) { - generic_handle_irq(IRQ_NEPONSET_SA1111); - } - } -} - static void neponset_set_mctrl(struct uart_port *port, u_int mctrl) { u_int mdm_ctl0 = MDM_CTL_0; @@ -147,6 +87,66 @@ static struct sa1100_port_fns neponset_port_fns __devinitdata = { .get_mctrl = neponset_get_mctrl, }; +/* + * Install handler for Neponset IRQ. Note that we have to loop here + * since the ETHERNET and USAR IRQs are level based, and we need to + * ensure that the IRQ signal is deasserted before returning. This + * is rather unfortunate. + */ +static void +neponset_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + unsigned int irr; + + while (1) { + /* + * Acknowledge the parent IRQ. + */ + desc->irq_data.chip->irq_ack(&desc->irq_data); + + /* + * Read the interrupt reason register. Let's have all + * active IRQ bits high. Note: there is a typo in the + * Neponset user's guide for the SA1111 IRR level. + */ + irr = IRR ^ (IRR_ETHERNET | IRR_USAR); + + if ((irr & (IRR_ETHERNET | IRR_USAR | IRR_SA1111)) == 0) + break; + + /* + * Since there is no individual mask, we have to + * mask the parent IRQ. This is safe, since we'll + * recheck the register for any pending IRQs. + */ + if (irr & (IRR_ETHERNET | IRR_USAR)) { + desc->irq_data.chip->irq_mask(&desc->irq_data); + + /* + * Ack the interrupt now to prevent re-entering + * this neponset handler. Again, this is safe + * since we'll check the IRR register prior to + * leaving. + */ + desc->irq_data.chip->irq_ack(&desc->irq_data); + + if (irr & IRR_ETHERNET) { + generic_handle_irq(IRQ_NEPONSET_SMC9196); + } + + if (irr & IRR_USAR) { + generic_handle_irq(IRQ_NEPONSET_USAR); + } + + desc->irq_data.chip->irq_unmask(&desc->irq_data); + } + + if (irr & IRR_SA1111) { + generic_handle_irq(IRQ_NEPONSET_SA1111); + } + } +} + /* * Yes, we really do not have any kind of masking or unmasking */ @@ -161,6 +161,43 @@ static struct irq_chip nochip = { .irq_unmask = nochip_noop, }; +static struct resource sa1111_resources[] = { + [0] = DEFINE_RES_MEM(0x40000000, SZ_8K), + [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SA1111), +}; + +static struct sa1111_platform_data sa1111_info = { + .irq_base = IRQ_BOARD_END, +}; + +static u64 sa1111_dmamask = 0xffffffffUL; + +static struct platform_device sa1111_device = { + .name = "sa1111", + .id = 0, + .dev = { + .dma_mask = &sa1111_dmamask, + .coherent_dma_mask = 0xffffffff, + .platform_data = &sa1111_info, + }, + .num_resources = ARRAY_SIZE(sa1111_resources), + .resource = sa1111_resources, +}; + +static struct resource smc91x_resources[] = { + [0] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 0x02000000, "smc91x-regs"), + [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SMC9196), + [2] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, + 0x02000000, "smc91x-attrib"), +}; + +static struct platform_device smc91x_device = { + .name = "smc91x", + .id = 0, + .num_resources = ARRAY_SIZE(smc91x_resources), + .resource = smc91x_resources, +}; + static int __devinit neponset_probe(struct platform_device *dev) { sa1100_register_uart_fns(&neponset_port_fns); @@ -249,43 +286,6 @@ static struct platform_device neponset_device = { .resource = neponset_resources, }; -static struct resource sa1111_resources[] = { - [0] = DEFINE_RES_MEM(0x40000000, SZ_8K), - [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SA1111), -}; - -static struct sa1111_platform_data sa1111_info = { - .irq_base = IRQ_BOARD_END, -}; - -static u64 sa1111_dmamask = 0xffffffffUL; - -static struct platform_device sa1111_device = { - .name = "sa1111", - .id = 0, - .dev = { - .dma_mask = &sa1111_dmamask, - .coherent_dma_mask = 0xffffffff, - .platform_data = &sa1111_info, - }, - .num_resources = ARRAY_SIZE(sa1111_resources), - .resource = sa1111_resources, -}; - -static struct resource smc91x_resources[] = { - [0] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 0x02000000, "smc91x-regs"), - [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SMC9196), - [2] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, - 0x02000000, "smc91x-attrib"), -}; - -static struct platform_device smc91x_device = { - .name = "smc91x", - .id = 0, - .num_resources = ARRAY_SIZE(smc91x_resources), - .resource = smc91x_resources, -}; - static struct platform_device *devices[] __initdata = { &neponset_device, &sa1111_device, From 398e58d09d9ca024ecbf9b67dac57a995865bfcd Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 23:33:28 +0000 Subject: [PATCH 022/125] ARM: sa11x0: neponset: add driver .owner initializer Ensure that the driver .owner field is properly initialized. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 8fcd542d46f..1beaa0e5bf3 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -272,6 +272,7 @@ static struct platform_driver neponset_device_driver = { .resume = neponset_resume, .driver = { .name = "neponset", + .owner = THIS_MODULE, }, }; From ae14c2e28cd6d78a975dda853d2fdb00a3219c16 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 22:10:02 +0000 Subject: [PATCH 023/125] ARM: sa11x0: neponset: save and restore MDM_CTL_0 Save and restore the modem output control register across a suspend/ resume, as well as the NCR register. Place these in a locally allocated data structure rather than needing a new static variable. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 55 ++++++++++++++++++++++++++------- 1 file changed, 43 insertions(+), 12 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 1beaa0e5bf3..6f0aa91d5d3 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -1,12 +1,13 @@ /* * linux/arch/arm/mach-sa1100/neponset.c - * */ #include #include #include +#include #include #include +#include #include #include @@ -20,6 +21,13 @@ #include #include +struct neponset_drvdata { +#ifdef CONFIG_PM_SLEEP + u32 ncr0; + u32 mdm_ctl_0; +#endif +}; + void neponset_ncr_frob(unsigned int mask, unsigned int val) { unsigned long flags; @@ -200,6 +208,15 @@ static struct platform_device smc91x_device = { static int __devinit neponset_probe(struct platform_device *dev) { + struct neponset_drvdata *d; + int ret; + + d = kzalloc(sizeof(*d), GFP_KERNEL); + if (!d) { + ret = -ENOMEM; + goto err_alloc; + } + sa1100_register_uart_fns(&neponset_port_fns); /* @@ -234,29 +251,42 @@ static int __devinit neponset_probe(struct platform_device *dev) */ NCR_0 = NCR_GP01_OFF; + platform_set_drvdata(dev, d); + + return 0; + + err_alloc: + return ret; +} + +static int __devexit neponset_remove(struct platform_device *dev) +{ + struct neponset_drvdata *d = platform_get_drvdata(dev); + + irq_set_chained_handler(IRQ_GPIO25, NULL); + + kfree(d); + return 0; } #ifdef CONFIG_PM - -/* - * LDM power management. - */ -static unsigned int neponset_saved_state; - static int neponset_suspend(struct platform_device *dev, pm_message_t state) { - /* - * Save state. - */ - neponset_saved_state = NCR_0; + struct neponset_drvdata *d = platform_get_drvdata(dev); + + d->ncr0 = NCR_0; + d->mdm_ctl_0 = MDM_CTL_0; return 0; } static int neponset_resume(struct platform_device *dev) { - NCR_0 = neponset_saved_state; + struct neponset_drvdata *d = platform_get_drvdata(dev); + + NCR_0 = d->ncr0; + MDM_CTL_0 = d->mdm_ctl_0; return 0; } @@ -268,6 +298,7 @@ static int neponset_resume(struct platform_device *dev) static struct platform_driver neponset_device_driver = { .probe = neponset_probe, + .remove = __devexit_p(neponset_remove), .suspend = neponset_suspend, .resume = neponset_resume, .driver = { From 9590e898742cd6cd50aab1109a115faf42befaf7 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 22:36:47 +0000 Subject: [PATCH 024/125] ARM: sa11x0: neponset: dynamically create neponset child devices Use platform_device_register_full() to dynamically create the various neponset child platform devices, and place them below the neponset device itself to ensure proper PM ordering and device structure. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 56 ++++++++++++++++----------------- 1 file changed, 28 insertions(+), 28 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 6f0aa91d5d3..164bc9801ed 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -1,6 +1,7 @@ /* * linux/arch/arm/mach-sa1100/neponset.c */ +#include #include #include #include @@ -22,6 +23,8 @@ #include struct neponset_drvdata { + struct platform_device *sa1111; + struct platform_device *smc91x; #ifdef CONFIG_PM_SLEEP u32 ncr0; u32 mdm_ctl_0; @@ -178,20 +181,6 @@ static struct sa1111_platform_data sa1111_info = { .irq_base = IRQ_BOARD_END, }; -static u64 sa1111_dmamask = 0xffffffffUL; - -static struct platform_device sa1111_device = { - .name = "sa1111", - .id = 0, - .dev = { - .dma_mask = &sa1111_dmamask, - .coherent_dma_mask = 0xffffffff, - .platform_data = &sa1111_info, - }, - .num_resources = ARRAY_SIZE(sa1111_resources), - .resource = sa1111_resources, -}; - static struct resource smc91x_resources[] = { [0] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 0x02000000, "smc91x-regs"), [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SMC9196), @@ -199,16 +188,26 @@ static struct resource smc91x_resources[] = { 0x02000000, "smc91x-attrib"), }; -static struct platform_device smc91x_device = { - .name = "smc91x", - .id = 0, - .num_resources = ARRAY_SIZE(smc91x_resources), - .resource = smc91x_resources, -}; - static int __devinit neponset_probe(struct platform_device *dev) { struct neponset_drvdata *d; + struct platform_device_info sa1111_devinfo = { + .parent = &dev->dev, + .name = "sa1111", + .id = 0, + .res = sa1111_resources, + .num_res = ARRAY_SIZE(sa1111_resources), + .data = &sa1111_info, + .size_data = sizeof(sa1111_info), + .dma_mask = 0xffffffffUL, + }; + struct platform_device_info smc91x_devinfo = { + .parent = &dev->dev, + .name = "smc91x", + .id = 0, + .res = smc91x_resources, + .num_res = ARRAY_SIZE(smc91x_resources), + }; int ret; d = kzalloc(sizeof(*d), GFP_KERNEL); @@ -251,6 +250,9 @@ static int __devinit neponset_probe(struct platform_device *dev) */ NCR_0 = NCR_GP01_OFF; + d->sa1111 = platform_device_register_full(&sa1111_devinfo); + d->smc91x = platform_device_register_full(&smc91x_devinfo); + platform_set_drvdata(dev, d); return 0; @@ -263,6 +265,10 @@ static int __devexit neponset_remove(struct platform_device *dev) { struct neponset_drvdata *d = platform_get_drvdata(dev); + if (!IS_ERR(d->sa1111)) + platform_device_unregister(d->sa1111); + if (!IS_ERR(d->smc91x)) + platform_device_unregister(d->smc91x); irq_set_chained_handler(IRQ_GPIO25, NULL); kfree(d); @@ -318,12 +324,6 @@ static struct platform_device neponset_device = { .resource = neponset_resources, }; -static struct platform_device *devices[] __initdata = { - &neponset_device, - &sa1111_device, - &smc91x_device, -}; - extern void sa1110_mb_disable(void); static int __init neponset_init(void) @@ -354,7 +354,7 @@ static int __init neponset_init(void) return -ENODEV; } - return platform_add_devices(devices, ARRAY_SIZE(devices)); + return platform_device_register(&neponset_device); } subsys_initcall(neponset_init); From ced8d21cf104c9924e98f78954e873577366d156 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 22:22:18 +0000 Subject: [PATCH 025/125] ARM: sa11x0: neponset: implement support for sparse IRQs Implement the necessary allocation/freeing functionality to support sparse IRQs with the Neponset device. On non-sparse IRQ platforms, this allows us to dynamically allocate from within the available IRQ number space. Signed-off-by: Russell King --- arch/arm/mach-sa1100/include/mach/irqs.h | 8 -- arch/arm/mach-sa1100/neponset.c | 111 +++++++++++++---------- 2 files changed, 61 insertions(+), 58 deletions(-) diff --git a/arch/arm/mach-sa1100/include/mach/irqs.h b/arch/arm/mach-sa1100/include/mach/irqs.h index d18f21abef8..9e07634a467 100644 --- a/arch/arm/mach-sa1100/include/mach/irqs.h +++ b/arch/arm/mach-sa1100/include/mach/irqs.h @@ -82,11 +82,3 @@ #else #define NR_IRQS (IRQ_BOARD_START) #endif - -/* - * Board specific IRQs. Define them here. - * Do not surround them with ifdefs. - */ -#define IRQ_NEPONSET_SMC9196 (IRQ_BOARD_START + 0) -#define IRQ_NEPONSET_USAR (IRQ_BOARD_START + 1) -#define IRQ_NEPONSET_SA1111 (IRQ_BOARD_START + 2) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 164bc9801ed..47681960783 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -4,6 +4,7 @@ #include #include #include +#include #include #include #include @@ -11,9 +12,7 @@ #include #include -#include #include -#include #include #include #include @@ -22,9 +21,15 @@ #include #include +#define NEP_IRQ_SMC91X 0 +#define NEP_IRQ_USAR 1 +#define NEP_IRQ_SA1111 2 +#define NEP_IRQ_NR 3 + struct neponset_drvdata { struct platform_device *sa1111; struct platform_device *smc91x; + unsigned irq_base; #ifdef CONFIG_PM_SLEEP u32 ncr0; u32 mdm_ctl_0; @@ -104,9 +109,9 @@ static struct sa1100_port_fns neponset_port_fns __devinitdata = { * ensure that the IRQ signal is deasserted before returning. This * is rather unfortunate. */ -static void -neponset_irq_handler(unsigned int irq, struct irq_desc *desc) +static void neponset_irq_handler(unsigned int irq, struct irq_desc *desc) { + struct neponset_drvdata *d = irq_desc_get_handler_data(desc); unsigned int irr; while (1) { @@ -141,26 +146,21 @@ neponset_irq_handler(unsigned int irq, struct irq_desc *desc) */ desc->irq_data.chip->irq_ack(&desc->irq_data); - if (irr & IRR_ETHERNET) { - generic_handle_irq(IRQ_NEPONSET_SMC9196); - } + if (irr & IRR_ETHERNET) + generic_handle_irq(d->irq_base + NEP_IRQ_SMC91X); - if (irr & IRR_USAR) { - generic_handle_irq(IRQ_NEPONSET_USAR); - } + if (irr & IRR_USAR) + generic_handle_irq(d->irq_base + NEP_IRQ_USAR); desc->irq_data.chip->irq_unmask(&desc->irq_data); } - if (irr & IRR_SA1111) { - generic_handle_irq(IRQ_NEPONSET_SA1111); - } + if (irr & IRR_SA1111) + generic_handle_irq(d->irq_base + NEP_IRQ_SA1111); } } -/* - * Yes, we really do not have any kind of masking or unmasking - */ +/* Yes, we really do not have any kind of masking or unmasking */ static void nochip_noop(struct irq_data *irq) { } @@ -172,25 +172,17 @@ static struct irq_chip nochip = { .irq_unmask = nochip_noop, }; -static struct resource sa1111_resources[] = { - [0] = DEFINE_RES_MEM(0x40000000, SZ_8K), - [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SA1111), -}; - static struct sa1111_platform_data sa1111_info = { .irq_base = IRQ_BOARD_END, }; -static struct resource smc91x_resources[] = { - [0] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 0x02000000, "smc91x-regs"), - [1] = DEFINE_RES_IRQ(IRQ_NEPONSET_SMC9196), - [2] = DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, - 0x02000000, "smc91x-attrib"), -}; - static int __devinit neponset_probe(struct platform_device *dev) { struct neponset_drvdata *d; + struct resource sa1111_resources[] = { + DEFINE_RES_MEM(0x40000000, SZ_8K), + { .flags = IORESOURCE_IRQ }, + }; struct platform_device_info sa1111_devinfo = { .parent = &dev->dev, .name = "sa1111", @@ -201,6 +193,13 @@ static int __devinit neponset_probe(struct platform_device *dev) .size_data = sizeof(sa1111_info), .dma_mask = 0xffffffffUL, }; + struct resource smc91x_resources[] = { + DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, + 0x02000000, "smc91x-regs"), + DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, + 0x02000000, "smc91x-attrib"), + { .flags = IORESOURCE_IRQ }, + }; struct platform_device_info smc91x_devinfo = { .parent = &dev->dev, .name = "smc91x", @@ -216,47 +215,59 @@ static int __devinit neponset_probe(struct platform_device *dev) goto err_alloc; } - sa1100_register_uart_fns(&neponset_port_fns); + ret = irq_alloc_descs(-1, IRQ_BOARD_START, NEP_IRQ_NR, -1); + if (ret <= 0) { + dev_err(&dev->dev, "unable to allocate %u irqs: %d\n", + NEP_IRQ_NR, ret); + if (ret == 0) + ret = -ENOMEM; + goto err_irq_alloc; + } + + d->irq_base = ret; + + irq_set_chip_and_handler(d->irq_base + NEP_IRQ_SMC91X, &nochip, + handle_simple_irq); + set_irq_flags(d->irq_base + NEP_IRQ_SMC91X, IRQF_VALID | IRQF_PROBE); + irq_set_chip_and_handler(d->irq_base + NEP_IRQ_USAR, &nochip, + handle_simple_irq); + set_irq_flags(d->irq_base + NEP_IRQ_USAR, IRQF_VALID | IRQF_PROBE); + irq_set_chip(d->irq_base + NEP_IRQ_SA1111, &nochip); - /* - * Install handler for GPIO25. - */ irq_set_irq_type(IRQ_GPIO25, IRQ_TYPE_EDGE_RISING); + irq_set_handler_data(IRQ_GPIO25, d); irq_set_chained_handler(IRQ_GPIO25, neponset_irq_handler); /* - * We would set IRQ_GPIO25 to be a wake-up IRQ, but - * unfortunately something on the Neponset activates - * this IRQ on sleep (ethernet?) + * We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately + * something on the Neponset activates this IRQ on sleep (eth?) */ #if 0 enable_irq_wake(IRQ_GPIO25); #endif - /* - * Setup other Neponset IRQs. SA1111 will be done by the - * generic SA1111 code. - */ - irq_set_chip_and_handler(IRQ_NEPONSET_SMC9196, &nochip, - handle_simple_irq); - set_irq_flags(IRQ_NEPONSET_SMC9196, IRQF_VALID | IRQF_PROBE); - irq_set_chip_and_handler(IRQ_NEPONSET_USAR, &nochip, - handle_simple_irq); - set_irq_flags(IRQ_NEPONSET_USAR, IRQF_VALID | IRQF_PROBE); - irq_set_chip(IRQ_NEPONSET_SA1111, &nochip); + dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", + d->irq_base, d->irq_base + NEP_IRQ_NR - 1); - /* - * Disable GPIO 0/1 drivers so the buttons work on the module. - */ + sa1100_register_uart_fns(&neponset_port_fns); + + /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ NCR_0 = NCR_GP01_OFF; + sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111; + sa1111_resources[1].end = d->irq_base + NEP_IRQ_SA1111; d->sa1111 = platform_device_register_full(&sa1111_devinfo); + + smc91x_resources[2].start = d->irq_base + NEP_IRQ_SMC91X; + smc91x_resources[2].end = d->irq_base + NEP_IRQ_SMC91X; d->smc91x = platform_device_register_full(&smc91x_devinfo); platform_set_drvdata(dev, d); return 0; + err_irq_alloc: + kfree(d); err_alloc: return ret; } @@ -270,7 +281,7 @@ static int __devexit neponset_remove(struct platform_device *dev) if (!IS_ERR(d->smc91x)) platform_device_unregister(d->smc91x); irq_set_chained_handler(IRQ_GPIO25, NULL); - + irq_free_descs(d->irq_base, NEP_IRQ_NR); kfree(d); return 0; From b6bdfcf5ae634fcb9dce0c16972cf39d90be6f74 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 23:05:08 +0000 Subject: [PATCH 026/125] ARM: sa11x0: neponset: get parent IRQ from neponset device resource Obtain the parent IRQ from the neponset device resource rather than hard-coding it into the code. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 47681960783..f4d58715177 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -207,7 +207,11 @@ static int __devinit neponset_probe(struct platform_device *dev) .res = smc91x_resources, .num_res = ARRAY_SIZE(smc91x_resources), }; - int ret; + int ret, irq; + + irq = ret = platform_get_irq(dev, 0); + if (ret < 0) + goto err_alloc; d = kzalloc(sizeof(*d), GFP_KERNEL); if (!d) { @@ -234,16 +238,16 @@ static int __devinit neponset_probe(struct platform_device *dev) set_irq_flags(d->irq_base + NEP_IRQ_USAR, IRQF_VALID | IRQF_PROBE); irq_set_chip(d->irq_base + NEP_IRQ_SA1111, &nochip); - irq_set_irq_type(IRQ_GPIO25, IRQ_TYPE_EDGE_RISING); - irq_set_handler_data(IRQ_GPIO25, d); - irq_set_chained_handler(IRQ_GPIO25, neponset_irq_handler); + irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING); + irq_set_handler_data(irq, d); + irq_set_chained_handler(irq, neponset_irq_handler); /* * We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately * something on the Neponset activates this IRQ on sleep (eth?) */ #if 0 - enable_irq_wake(IRQ_GPIO25); + enable_irq_wake(irq); #endif dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", @@ -275,12 +279,13 @@ static int __devinit neponset_probe(struct platform_device *dev) static int __devexit neponset_remove(struct platform_device *dev) { struct neponset_drvdata *d = platform_get_drvdata(dev); + int irq = platform_get_irq(dev, 0); if (!IS_ERR(d->sa1111)) platform_device_unregister(d->sa1111); if (!IS_ERR(d->smc91x)) platform_device_unregister(d->smc91x); - irq_set_chained_handler(IRQ_GPIO25, NULL); + irq_set_chained_handler(irq, NULL); irq_free_descs(d->irq_base, NEP_IRQ_NR); kfree(d); @@ -325,7 +330,8 @@ static struct platform_driver neponset_device_driver = { }; static struct resource neponset_resources[] = { - [0] = DEFINE_RES_MEM(0x10000000, 0x08000000), + DEFINE_RES_MEM(0x10000000, 0x08000000), + DEFINE_RES_IRQ(IRQ_GPIO25), }; static struct platform_device neponset_device = { From d2e539a5ebd6b204037deb44c416a9e20b5d2354 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 23:17:37 +0000 Subject: [PATCH 027/125] ARM: sa11x0: neponset: place smc91x and sa1111 resources in neponset device Complete the neponset device resources by covering the children's memory resources in the parent neponset device. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index f4d58715177..2451a38aa2f 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -179,6 +179,7 @@ static struct sa1111_platform_data sa1111_info = { static int __devinit neponset_probe(struct platform_device *dev) { struct neponset_drvdata *d; + struct resource *sa1111_res, *smc91x_res; struct resource sa1111_resources[] = { DEFINE_RES_MEM(0x40000000, SZ_8K), { .flags = IORESOURCE_IRQ }, @@ -213,6 +214,13 @@ static int __devinit neponset_probe(struct platform_device *dev) if (ret < 0) goto err_alloc; + smc91x_res = platform_get_resource(dev, IORESOURCE_MEM, 1); + sa1111_res = platform_get_resource(dev, IORESOURCE_MEM, 2); + if (!smc91x_res || !sa1111_res) { + ret = -ENXIO; + goto err_alloc; + } + d = kzalloc(sizeof(*d), GFP_KERNEL); if (!d) { ret = -ENOMEM; @@ -258,10 +266,13 @@ static int __devinit neponset_probe(struct platform_device *dev) /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ NCR_0 = NCR_GP01_OFF; + sa1111_resources[0].parent = sa1111_res; sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111; sa1111_resources[1].end = d->irq_base + NEP_IRQ_SA1111; d->sa1111 = platform_device_register_full(&sa1111_devinfo); + smc91x_resources[0].parent = smc91x_res; + smc91x_resources[1].parent = smc91x_res; smc91x_resources[2].start = d->irq_base + NEP_IRQ_SMC91X; smc91x_resources[2].end = d->irq_base + NEP_IRQ_SMC91X; d->smc91x = platform_device_register_full(&smc91x_devinfo); @@ -331,6 +342,8 @@ static struct platform_driver neponset_device_driver = { static struct resource neponset_resources[] = { DEFINE_RES_MEM(0x10000000, 0x08000000), + DEFINE_RES_MEM(0x18000000, 0x04000000), + DEFINE_RES_MEM(0x40000000, SZ_8K), DEFINE_RES_IRQ(IRQ_GPIO25), }; From 51f93390c21a4154b0520c3a8a34733e4072a7db Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 23:29:47 +0000 Subject: [PATCH 028/125] ARM: sa11x0: neponset: suspend/resume in _noirq state Suspend and resume in the _noirq state, so that we're saving the state of the modem control signals as late as possible, and restoring them as early as possible. There's nothing to do in thaw/poweroff methods as we've already saved the necessary state. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 2451a38aa2f..59223baa7c1 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include @@ -303,10 +304,10 @@ static int __devexit neponset_remove(struct platform_device *dev) return 0; } -#ifdef CONFIG_PM -static int neponset_suspend(struct platform_device *dev, pm_message_t state) +#ifdef CONFIG_PM_SLEEP +static int neponset_suspend(struct device *dev) { - struct neponset_drvdata *d = platform_get_drvdata(dev); + struct neponset_drvdata *d = dev_get_drvdata(dev); d->ncr0 = NCR_0; d->mdm_ctl_0 = MDM_CTL_0; @@ -314,9 +315,9 @@ static int neponset_suspend(struct platform_device *dev, pm_message_t state) return 0; } -static int neponset_resume(struct platform_device *dev) +static int neponset_resume(struct device *dev) { - struct neponset_drvdata *d = platform_get_drvdata(dev); + struct neponset_drvdata *d = dev_get_drvdata(dev); NCR_0 = d->ncr0; MDM_CTL_0 = d->mdm_ctl_0; @@ -324,19 +325,24 @@ static int neponset_resume(struct platform_device *dev) return 0; } +static const struct dev_pm_ops neponset_pm_ops = { + .suspend_noirq = neponset_suspend, + .resume_noirq = neponset_resume, + .freeze_noirq = neponset_suspend, + .restore_noirq = neponset_resume, +}; +#define PM_OPS &neponset_pm_ops #else -#define neponset_suspend NULL -#define neponset_resume NULL +#define PM_OPS NULL #endif static struct platform_driver neponset_device_driver = { .probe = neponset_probe, .remove = __devexit_p(neponset_remove), - .suspend = neponset_suspend, - .resume = neponset_resume, .driver = { .name = "neponset", .owner = THIS_MODULE, + .pm = PM_OPS, }, }; From bab50a35ee703955bd708a4a44cd56ed30e601c8 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Jan 2012 11:50:23 +0000 Subject: [PATCH 029/125] ARM: sa11x0: assabet/neponest: create neponset device in assabet.c The neponset board is a daughter board for the Assabet. Create the neponset platform device in assabet.c, where we don't have to wrap it with machine_is_assabet() stuff. We also create this device dynamically rather than keeping it as a static device. Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 12 +++++++ arch/arm/mach-sa1100/neponset.c | 56 ++++++++------------------------- 2 files changed, 25 insertions(+), 43 deletions(-) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index e3805d4c052..f2030bc22cd 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -197,6 +197,15 @@ static struct mcp_plat_data assabet_mcp_data = { .sclk_rate = 11981000, }; +#ifdef CONFIG_ASSABET_NEPONSET +static struct resource neponset_resources[] = { + DEFINE_RES_MEM(0x10000000, 0x08000000), + DEFINE_RES_MEM(0x18000000, 0x04000000), + DEFINE_RES_MEM(0x40000000, SZ_8K), + DEFINE_RES_IRQ(IRQ_GPIO25), +}; +#endif + static void __init assabet_init(void) { /* @@ -247,6 +256,9 @@ static void __init assabet_init(void) #ifndef CONFIG_ASSABET_NEPONSET printk( "Warning: Neponset detected but full support " "hasn't been configured in the kernel\n" ); +#else + platform_device_register_simple("neponset", 0, + neponset_resources, ARRAY_SIZE(neponset_resources)); #endif } diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 59223baa7c1..2a9e1e2223f 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -27,6 +27,8 @@ #define NEP_IRQ_SA1111 2 #define NEP_IRQ_NR 3 +extern void sa1110_mb_disable(void); + struct neponset_drvdata { struct platform_device *sa1111; struct platform_device *smc91x; @@ -222,6 +224,13 @@ static int __devinit neponset_probe(struct platform_device *dev) goto err_alloc; } + if (WHOAMI != 0x11) { + dev_warn(&dev->dev, "Neponset board detected, but wrong ID: %02x\n", + WHOAMI); + ret = -ENODEV; + goto err_alloc; + } + d = kzalloc(sizeof(*d), GFP_KERNEL); if (!d) { ret = -ENOMEM; @@ -264,6 +273,9 @@ static int __devinit neponset_probe(struct platform_device *dev) sa1100_register_uart_fns(&neponset_port_fns); + /* Ensure that the memory bus request/grant signals are setup */ + sa1110_mb_disable(); + /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ NCR_0 = NCR_GP01_OFF; @@ -346,51 +358,9 @@ static struct platform_driver neponset_device_driver = { }, }; -static struct resource neponset_resources[] = { - DEFINE_RES_MEM(0x10000000, 0x08000000), - DEFINE_RES_MEM(0x18000000, 0x04000000), - DEFINE_RES_MEM(0x40000000, SZ_8K), - DEFINE_RES_IRQ(IRQ_GPIO25), -}; - -static struct platform_device neponset_device = { - .name = "neponset", - .id = 0, - .num_resources = ARRAY_SIZE(neponset_resources), - .resource = neponset_resources, -}; - -extern void sa1110_mb_disable(void); - static int __init neponset_init(void) { - platform_driver_register(&neponset_device_driver); - - /* - * The Neponset is only present on the Assabet machine type. - */ - if (!machine_is_assabet()) - return -ENODEV; - - /* - * Ensure that the memory bus request/grant signals are setup, - * and the grant is held in its inactive state, whether or not - * we actually have a Neponset attached. - */ - sa1110_mb_disable(); - - if (!machine_has_neponset()) { - printk(KERN_DEBUG "Neponset expansion board not present\n"); - return -ENODEV; - } - - if (WHOAMI != 0x11) { - printk(KERN_WARNING "Neponset board detected, but " - "wrong ID: %02x\n", WHOAMI); - return -ENODEV; - } - - return platform_device_register(&neponset_device); + return platform_driver_register(&neponset_device_driver); } subsys_initcall(neponset_init); From f942b0fd6c81416bb8d52bc26a76a58c02d87bc2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 29 Jan 2012 11:19:06 +0000 Subject: [PATCH 030/125] ARM: sa11x0: neponset: move register definitions to neponset.c Move the board specific neponset register definitions to the board file, rather than mach/neponset.h. However, as the NCR_0 register definitions are used by some drivers, leave these behind. Signed-off-by: Russell King --- arch/arm/mach-sa1100/include/mach/neponset.h | 48 -------- arch/arm/mach-sa1100/neponset.c | 112 +++++++++++++++---- 2 files changed, 90 insertions(+), 70 deletions(-) diff --git a/arch/arm/mach-sa1100/include/mach/neponset.h b/arch/arm/mach-sa1100/include/mach/neponset.h index 6032216e183..5516a52a329 100644 --- a/arch/arm/mach-sa1100/include/mach/neponset.h +++ b/arch/arm/mach-sa1100/include/mach/neponset.h @@ -15,54 +15,6 @@ /* * Neponset definitions: */ - -#define NEPONSET_CPLD_BASE (0x10000000) -#define Nep_p2v( x ) ((x) - NEPONSET_CPLD_BASE + 0xf3000000) -#define Nep_v2p( x ) ((x) - 0xf3000000 + NEPONSET_CPLD_BASE) - -#define _IRR 0x10000024 /* Interrupt Reason Register */ -#define _AUD_CTL 0x100000c0 /* Audio controls (RW) */ -#define _MDM_CTL_0 0x100000b0 /* Modem control 0 (RW) */ -#define _MDM_CTL_1 0x100000b4 /* Modem control 1 (RW) */ -#define _NCR_0 0x100000a0 /* Control Register (RW) */ -#define _KP_X_OUT 0x10000090 /* Keypad row write (RW) */ -#define _KP_Y_IN 0x10000080 /* Keypad column read (RO) */ -#define _SWPK 0x10000020 /* Switch pack (RO) */ -#define _WHOAMI 0x10000000 /* System ID Register (RO) */ - -#define _LEDS 0x10000010 /* LEDs [31:0] (WO) */ - -#define IRR (*((volatile u_char *) Nep_p2v(_IRR))) -#define AUD_CTL (*((volatile u_char *) Nep_p2v(_AUD_CTL))) -#define MDM_CTL_0 (*((volatile u_char *) Nep_p2v(_MDM_CTL_0))) -#define MDM_CTL_1 (*((volatile u_char *) Nep_p2v(_MDM_CTL_1))) -#define NCR_0 (*((volatile u_char *) Nep_p2v(_NCR_0))) -#define KP_X_OUT (*((volatile u_char *) Nep_p2v(_KP_X_OUT))) -#define KP_Y_IN (*((volatile u_char *) Nep_p2v(_KP_Y_IN))) -#define SWPK (*((volatile u_char *) Nep_p2v(_SWPK))) -#define WHOAMI (*((volatile u_char *) Nep_p2v(_WHOAMI))) - -#define LEDS (*((volatile Word *) Nep_p2v(_LEDS))) - -#define IRR_ETHERNET (1<<0) -#define IRR_USAR (1<<1) -#define IRR_SA1111 (1<<2) - -#define AUD_SEL_1341 (1<<0) -#define AUD_MUTE_1341 (1<<1) - -#define MDM_CTL0_RTS1 (1 << 0) -#define MDM_CTL0_DTR1 (1 << 1) -#define MDM_CTL0_RTS2 (1 << 2) -#define MDM_CTL0_DTR2 (1 << 3) - -#define MDM_CTL1_CTS1 (1 << 0) -#define MDM_CTL1_DSR1 (1 << 1) -#define MDM_CTL1_DCD1 (1 << 2) -#define MDM_CTL1_CTS2 (1 << 3) -#define MDM_CTL1_DSR2 (1 << 4) -#define MDM_CTL1_DCD2 (1 << 5) - #define NCR_GP01_OFF (1<<0) #define NCR_TP_PWR_EN (1<<1) #define NCR_MS_PWR_EN (1<<2) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 2a9e1e2223f..3c0d4b837ad 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -27,9 +27,40 @@ #define NEP_IRQ_SA1111 2 #define NEP_IRQ_NR 3 +#define WHOAMI 0x00 +#define LEDS 0x10 +#define SWPK 0x20 +#define IRR 0x24 +#define KP_Y_IN 0x80 +#define KP_X_OUT 0x90 +#define NCR_0 0xa0 +#define MDM_CTL_0 0xb0 +#define MDM_CTL_1 0xb4 +#define AUD_CTL 0xc0 + +#define IRR_ETHERNET (1 << 0) +#define IRR_USAR (1 << 1) +#define IRR_SA1111 (1 << 2) + +#define MDM_CTL0_RTS1 (1 << 0) +#define MDM_CTL0_DTR1 (1 << 1) +#define MDM_CTL0_RTS2 (1 << 2) +#define MDM_CTL0_DTR2 (1 << 3) + +#define MDM_CTL1_CTS1 (1 << 0) +#define MDM_CTL1_DSR1 (1 << 1) +#define MDM_CTL1_DCD1 (1 << 2) +#define MDM_CTL1_CTS2 (1 << 3) +#define MDM_CTL1_DSR2 (1 << 4) +#define MDM_CTL1_DCD2 (1 << 5) + +#define AUD_SEL_1341 (1 << 0) +#define AUD_MUTE_1341 (1 << 1) + extern void sa1110_mb_disable(void); struct neponset_drvdata { + void __iomem *base; struct platform_device *sa1111; struct platform_device *smc91x; unsigned irq_base; @@ -39,19 +70,34 @@ struct neponset_drvdata { #endif }; +static void __iomem *nep_base; + void neponset_ncr_frob(unsigned int mask, unsigned int val) { - unsigned long flags; + void __iomem *base = nep_base; - local_irq_save(flags); - NCR_0 = (NCR_0 & ~mask) | val; - local_irq_restore(flags); + if (base) { + unsigned long flags; + unsigned v; + + local_irq_save(flags); + v = readb_relaxed(base + NCR_0); + writeb_relaxed((v & ~mask) | val, base + NCR_0); + local_irq_restore(flags); + } else { + WARN(1, "nep_base unset\n"); + } } static void neponset_set_mctrl(struct uart_port *port, u_int mctrl) { - u_int mdm_ctl0 = MDM_CTL_0; + void __iomem *base = nep_base; + u_int mdm_ctl0; + if (!base) + return; + + mdm_ctl0 = readb_relaxed(base + MDM_CTL_0); if (port->mapbase == _Ser1UTCR0) { if (mctrl & TIOCM_RTS) mdm_ctl0 &= ~MDM_CTL0_RTS2; @@ -74,14 +120,19 @@ static void neponset_set_mctrl(struct uart_port *port, u_int mctrl) mdm_ctl0 |= MDM_CTL0_DTR1; } - MDM_CTL_0 = mdm_ctl0; + writeb_relaxed(mdm_ctl0, base + MDM_CTL_0); } static u_int neponset_get_mctrl(struct uart_port *port) { + void __iomem *base = nep_base; u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; - u_int mdm_ctl1 = MDM_CTL_1; + u_int mdm_ctl1; + if (!base) + return ret; + + mdm_ctl1 = readb_relaxed(base + MDM_CTL_1); if (port->mapbase == _Ser1UTCR0) { if (mdm_ctl1 & MDM_CTL1_DCD2) ret &= ~TIOCM_CD; @@ -128,7 +179,8 @@ static void neponset_irq_handler(unsigned int irq, struct irq_desc *desc) * active IRQ bits high. Note: there is a typo in the * Neponset user's guide for the SA1111 IRR level. */ - irr = IRR ^ (IRR_ETHERNET | IRR_USAR); + irr = readb_relaxed(d->base + IRR); + irr ^= IRR_ETHERNET | IRR_USAR; if ((irr & (IRR_ETHERNET | IRR_USAR | IRR_SA1111)) == 0) break; @@ -182,7 +234,7 @@ static struct sa1111_platform_data sa1111_info = { static int __devinit neponset_probe(struct platform_device *dev) { struct neponset_drvdata *d; - struct resource *sa1111_res, *smc91x_res; + struct resource *nep_res, *sa1111_res, *smc91x_res; struct resource sa1111_resources[] = { DEFINE_RES_MEM(0x40000000, SZ_8K), { .flags = IORESOURCE_IRQ }, @@ -213,30 +265,40 @@ static int __devinit neponset_probe(struct platform_device *dev) }; int ret, irq; + if (nep_base) + return -EBUSY; + irq = ret = platform_get_irq(dev, 0); if (ret < 0) goto err_alloc; + nep_res = platform_get_resource(dev, IORESOURCE_MEM, 0); smc91x_res = platform_get_resource(dev, IORESOURCE_MEM, 1); sa1111_res = platform_get_resource(dev, IORESOURCE_MEM, 2); - if (!smc91x_res || !sa1111_res) { + if (!nep_res || !smc91x_res || !sa1111_res) { ret = -ENXIO; goto err_alloc; } - if (WHOAMI != 0x11) { - dev_warn(&dev->dev, "Neponset board detected, but wrong ID: %02x\n", - WHOAMI); - ret = -ENODEV; - goto err_alloc; - } - d = kzalloc(sizeof(*d), GFP_KERNEL); if (!d) { ret = -ENOMEM; goto err_alloc; } + d->base = ioremap(nep_res->start, SZ_4K); + if (!d->base) { + ret = -ENOMEM; + goto err_ioremap; + } + + if (readb_relaxed(d->base + WHOAMI) != 0x11) { + dev_warn(&dev->dev, "Neponset board detected, but wrong ID: %02x\n", + readb_relaxed(d->base + WHOAMI)); + ret = -ENODEV; + goto err_id; + } + ret = irq_alloc_descs(-1, IRQ_BOARD_START, NEP_IRQ_NR, -1); if (ret <= 0) { dev_err(&dev->dev, "unable to allocate %u irqs: %d\n", @@ -270,6 +332,7 @@ static int __devinit neponset_probe(struct platform_device *dev) dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", d->irq_base, d->irq_base + NEP_IRQ_NR - 1); + nep_base = d->base; sa1100_register_uart_fns(&neponset_port_fns); @@ -277,7 +340,7 @@ static int __devinit neponset_probe(struct platform_device *dev) sa1110_mb_disable(); /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ - NCR_0 = NCR_GP01_OFF; + writeb_relaxed(NCR_GP01_OFF, d->base + NCR_0); sa1111_resources[0].parent = sa1111_res; sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111; @@ -295,6 +358,9 @@ static int __devinit neponset_probe(struct platform_device *dev) return 0; err_irq_alloc: + err_id: + iounmap(d->base); + err_ioremap: kfree(d); err_alloc: return ret; @@ -311,6 +377,8 @@ static int __devexit neponset_remove(struct platform_device *dev) platform_device_unregister(d->smc91x); irq_set_chained_handler(irq, NULL); irq_free_descs(d->irq_base, NEP_IRQ_NR); + nep_base = NULL; + iounmap(d->base); kfree(d); return 0; @@ -321,8 +389,8 @@ static int neponset_suspend(struct device *dev) { struct neponset_drvdata *d = dev_get_drvdata(dev); - d->ncr0 = NCR_0; - d->mdm_ctl_0 = MDM_CTL_0; + d->ncr0 = readb_relaxed(d->base + NCR_0); + d->mdm_ctl_0 = readb_relaxed(d->base + MDM_CTL_0); return 0; } @@ -331,8 +399,8 @@ static int neponset_resume(struct device *dev) { struct neponset_drvdata *d = dev_get_drvdata(dev); - NCR_0 = d->ncr0; - MDM_CTL_0 = d->mdm_ctl_0; + writeb_relaxed(d->ncr0, d->base + NCR_0); + writeb_relaxed(d->mdm_ctl_0, d->base + MDM_CTL_0); return 0; } From fbae0f8912dc12b284433c05417ea76311205bbf Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 29 Jan 2012 11:23:33 +0000 Subject: [PATCH 031/125] ARM: sa11x0: neponset: don't static map neponset registers Now that we ioremap() the neponset register space, there's no need to static map the neponset registers. Get rid of this static mapping. Signed-off-by: Russell King --- arch/arm/mach-sa1100/neponset.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index 3c0d4b837ad..7ffa631eede 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -434,12 +434,7 @@ static int __init neponset_init(void) subsys_initcall(neponset_init); static struct map_desc neponset_io_desc[] __initdata = { - { /* System Registers */ - .virtual = 0xf3000000, - .pfn = __phys_to_pfn(0x10000000), - .length = SZ_1M, - .type = MT_DEVICE - }, { /* SA-1111 */ + { /* SA-1111 */ .virtual = 0xf4000000, .pfn = __phys_to_pfn(0x40000000), .length = SZ_1M, From 29c140b623ce2c55131c6d1c26a2f3e455723b81 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 3 Feb 2012 19:03:31 +0000 Subject: [PATCH 032/125] ARM: sa1111: fix memory request/grant setup on PM events We weren't re-enabling the memory request/grant signals on resume, causing DMA devices on the sa1111 to fail. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index 61691cdbdcf..c7bed309b3a 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -87,7 +87,8 @@ #define IRQ_S0_BVD1_STSCHG (53) #define IRQ_S1_BVD1_STSCHG (54) -extern void __init sa1110_mb_enable(void); +extern void sa1110_mb_enable(void); +extern void sa1110_mb_disable(void); /* * We keep the following data for the overall SA1111. Note that the @@ -926,6 +927,10 @@ static int sa1111_suspend(struct platform_device *dev, pm_message_t state) spin_unlock_irqrestore(&sachip->lock, flags); +#ifdef CONFIG_ARCH_SA1100 + sa1110_mb_disable(); +#endif + return 0; } @@ -966,6 +971,11 @@ static int sa1111_resume(struct platform_device *dev) */ sa1111_wake(sachip); +#ifdef CONFIG_ARCH_SA1100 + /* Enable the memory bus request/grant signals */ + sa1110_mb_enable(); +#endif + /* * Only lock for write ops. Also, sa1111_wake must be called with * released spinlock! From a22db0f38243f68957c89b1b9689a2064507bed6 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 3 Feb 2012 19:05:13 +0000 Subject: [PATCH 033/125] ARM: sa1111: fix PWM state on suspend We should not write to the SA1111 registers after setting the SLEEP bit. Moreover, the manual says that the PWM registers should be disabled before we enter sleep. So, move the clearing of these registers earlier in the suspend sequence. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index c7bed309b3a..f0d9faadcc3 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -905,6 +905,9 @@ static int sa1111_suspend(struct platform_device *dev, pm_message_t state) save->skpwm0 = sa1111_readl(base + SA1111_SKPWM0); save->skpwm1 = sa1111_readl(base + SA1111_SKPWM1); + sa1111_writel(0, sachip->base + SA1111_SKPWM0); + sa1111_writel(0, sachip->base + SA1111_SKPWM1); + base = sachip->base + SA1111_INTC; save->intpol0 = sa1111_readl(base + SA1111_INTPOL0); save->intpol1 = sa1111_readl(base + SA1111_INTPOL1); @@ -920,8 +923,6 @@ static int sa1111_suspend(struct platform_device *dev, pm_message_t state) */ val = sa1111_readl(sachip->base + SA1111_SKCR); sa1111_writel(val | SKCR_SLEEP, sachip->base + SA1111_SKCR); - sa1111_writel(0, sachip->base + SA1111_SKPWM0); - sa1111_writel(0, sachip->base + SA1111_SKPWM1); clk_disable(sachip->clk); From 4d5d11285c78691efb17148dfc3d56642bee6204 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 16:09:22 +0000 Subject: [PATCH 034/125] ARM: sa1111: add sa1111 core driver .owner initializer Add an initializer for the struct device_driver .owner member. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index f0d9faadcc3..957f6e3c428 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -1064,6 +1064,7 @@ static struct platform_driver sa1111_device_driver = { .resume = sa1111_resume, .driver = { .name = "sa1111", + .owner = THIS_MODULE, }, }; From 1ebcd7654e4e391a36945c937c125995c737c446 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Jan 2012 11:19:48 +0000 Subject: [PATCH 035/125] ARM: sa1111: add .owner initializer to sa1111 driver structures Add a .owner initializer to the sa1111 driver structures to allow allow the modules to be associated with their driver structures. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- drivers/input/serio/sa1111ps2.c | 1 + drivers/usb/host/ohci-sa1111.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c index 44fc8b4bcd8..40ec545fbd4 100644 --- a/drivers/input/serio/sa1111ps2.c +++ b/drivers/input/serio/sa1111ps2.c @@ -330,6 +330,7 @@ static int __devexit ps2_remove(struct sa1111_dev *dev) static struct sa1111_driver ps2_driver = { .drv = { .name = "sa1111-ps2", + .owner = THIS_MODULE, }, .devid = SA1111_DEVID_PS2, .probe = ps2_probe, diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 4bde4f9821b..7d2aa62ea61 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -262,6 +262,7 @@ static int ohci_hcd_sa1111_drv_remove(struct sa1111_dev *dev) static struct sa1111_driver ohci_hcd_sa1111_driver = { .drv = { .name = "sa1111-ohci", + .owner = THIS_MODULE, }, .devid = SA1111_DEVID_USB, .probe = ohci_hcd_sa1111_drv_probe, From f03ecaa0aa3a3b74b9b9e8341cf7919516c902d5 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 16 Jan 2012 00:09:22 +0000 Subject: [PATCH 036/125] ARM: sa1111: finish "allow cascaded IRQs to be used by platforms" Commit 19851c58e680 (sa1111: allow cascaded IRQs to be used by platforms) moved the IRQ definitions to the .c file, and added an irq_base member to the private data structure. The inerrupt demultiplexer uses irq_base, but the interrupt setup code does not. Also, although the commit adds a private data structure to pass this data, it isn't even referenced, resulting in irq_base being zero. We also copied the IRQ numbers from the device info array into the actual devices, resulting in wrong interrupt numbers passed to the sub-devices. The net effect of this is that we always overwrite IRQs 0-54, even if they are allocated elsewhere in the system. Add the code necessary to setup the private irq_base, and use it in the IRQ setup code. Make the SA-1111 probe fail with -EINVAL if there is no platform data provided. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index 957f6e3c428..d3a8f5e2648 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -438,7 +438,7 @@ static struct irq_chip sa1111_high_chip = { static void sa1111_setup_irq(struct sa1111 *sachip) { void __iomem *irqbase = sachip->base + SA1111_INTC; - unsigned int irq; + unsigned i, irq; /* * We're guaranteed that this region hasn't been taken. @@ -464,14 +464,16 @@ static void sa1111_setup_irq(struct sa1111 *sachip) sa1111_writel(~0, irqbase + SA1111_INTSTATCLR0); sa1111_writel(~0, irqbase + SA1111_INTSTATCLR1); - for (irq = IRQ_GPAIN0; irq <= SSPROR; irq++) { + for (i = IRQ_GPAIN0; i <= SSPROR; i++) { + irq = sachip->irq_base + i; irq_set_chip_and_handler(irq, &sa1111_low_chip, handle_edge_irq); irq_set_chip_data(irq, sachip); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } - for (irq = AUDXMTDMADONEA; irq <= IRQ_S1_BVD1_STSCHG; irq++) { + for (i = AUDXMTDMADONEA; i <= IRQ_S1_BVD1_STSCHG; i++) { + irq = sachip->irq_base + i; irq_set_chip_and_handler(irq, &sa1111_high_chip, handle_edge_irq); irq_set_chip_data(irq, sachip); @@ -625,6 +627,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent, struct sa1111_dev_info *info) { struct sa1111_dev *dev; + unsigned i; int ret; dev = kzalloc(sizeof(struct sa1111_dev), GFP_KERNEL); @@ -645,7 +648,9 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent, dev->res.flags = IORESOURCE_MEM; dev->mapbase = sachip->base + info->offset; dev->skpcr_mask = info->skpcr_mask; - memmove(dev->irq, info->irq, sizeof(dev->irq)); + + for (i = 0; i < ARRAY_SIZE(info->irq); i++) + dev->irq[i] = sachip->irq_base + info->irq[i]; ret = request_resource(parent, &dev->res); if (ret) { @@ -699,16 +704,21 @@ out: * Returns: * %-ENODEV device not found. * %-EBUSY physical address already marked in-use. + * %-EINVAL no platform data passed * %0 successful. */ static int __devinit __sa1111_probe(struct device *me, struct resource *mem, int irq) { + struct sa1111_platform_data *pd = me->platform_data; struct sa1111 *sachip; unsigned long id; unsigned int has_devs; int i, ret = -ENODEV; + if (!pd) + return -EINVAL; + sachip = kzalloc(sizeof(struct sa1111), GFP_KERNEL); if (!sachip) return -ENOMEM; @@ -730,6 +740,7 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq) sachip->phys = mem->start; sachip->irq = irq; + sachip->irq_base = pd->irq_base; /* * Map the whole region. This also maps the From 36d312130228504a223de44739c807b0353248c1 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Jan 2012 21:25:20 +0000 Subject: [PATCH 037/125] ARM: sa1111: implement support for sparse IRQs Implement the necessary allocation/freeing functionality to support sparse IRQs with the SA-1111 device. On non-sparse IRQ platforms, this allows us to dynamically allocate from within the available IRQ number space. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 43 ++++++++++++++++++++++++++++++---------- 1 file changed, 32 insertions(+), 11 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index d3a8f5e2648..b64a3360c8c 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -16,6 +16,7 @@ */ #include #include +#include #include #include #include @@ -28,9 +29,8 @@ #include #include -#include -#include #include +#include #include #include @@ -86,6 +86,7 @@ #define IRQ_S1_CD_VALID (52) #define IRQ_S0_BVD1_STSCHG (53) #define IRQ_S1_BVD1_STSCHG (54) +#define SA1111_IRQ_NR (55) extern void sa1110_mb_enable(void); extern void sa1110_mb_disable(void); @@ -435,16 +436,28 @@ static struct irq_chip sa1111_high_chip = { .irq_set_wake = sa1111_wake_highirq, }; -static void sa1111_setup_irq(struct sa1111 *sachip) +static int sa1111_setup_irq(struct sa1111 *sachip, unsigned irq_base) { void __iomem *irqbase = sachip->base + SA1111_INTC; unsigned i, irq; + int ret; /* * We're guaranteed that this region hasn't been taken. */ request_mem_region(sachip->phys + SA1111_INTC, 512, "irq"); + ret = irq_alloc_descs(-1, irq_base, SA1111_IRQ_NR, -1); + if (ret <= 0) { + dev_err(sachip->dev, "unable to allocate %u irqs: %d\n", + SA1111_IRQ_NR, ret); + if (ret == 0) + ret = -EINVAL; + return ret; + } + + sachip->irq_base = ret; + /* disable all IRQs */ sa1111_writel(0, irqbase + SA1111_INTEN0); sa1111_writel(0, irqbase + SA1111_INTEN1); @@ -486,6 +499,11 @@ static void sa1111_setup_irq(struct sa1111 *sachip) irq_set_irq_type(sachip->irq, IRQ_TYPE_EDGE_RISING); irq_set_handler_data(sachip->irq, sachip); irq_set_chained_handler(sachip->irq, sa1111_irq_handler); + + dev_info(sachip->dev, "Providing IRQ%u-%u\n", + sachip->irq_base, sachip->irq_base + SA1111_IRQ_NR - 1); + + return 0; } /* @@ -740,7 +758,6 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq) sachip->phys = mem->start; sachip->irq = irq; - sachip->irq_base = pd->irq_base; /* * Map the whole region. This also maps the @@ -771,6 +788,16 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq) */ sa1111_wake(sachip); + /* + * The interrupt controller must be initialised before any + * other device to ensure that the interrupts are available. + */ + if (sachip->irq != NO_IRQ) { + ret = sa1111_setup_irq(sachip, pd->irq_base); + if (ret) + goto err_unmap; + } + #ifdef CONFIG_ARCH_SA1100 { unsigned int val; @@ -801,13 +828,6 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq) } #endif - /* - * The interrupt controller must be initialised before any - * other device to ensure that the interrupts are available. - */ - if (sachip->irq != NO_IRQ) - sa1111_setup_irq(sachip); - g_sa1111 = sachip; has_devs = ~0; @@ -858,6 +878,7 @@ static void __sa1111_remove(struct sa1111 *sachip) if (sachip->irq != NO_IRQ) { irq_set_chained_handler(sachip->irq, NULL); irq_set_handler_data(sachip->irq, NULL); + irq_free_descs(sachip->irq_base, SA1111_IRQ_NR); release_mem_region(sachip->phys + SA1111_INTC, 512); } From 6bd72f0562142ddae26a052cfc4e578ad6953d06 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Jan 2012 11:01:18 +0000 Subject: [PATCH 038/125] ARM: sa1111: add shutdown hook to sa1111_driver structure Add a shutdown hook to the sa1111_driver structure to allow drivers to be notified of system reboots and shutdowns. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 9 +++++++++ arch/arm/include/asm/hardware/sa1111.h | 1 + 2 files changed, 10 insertions(+) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index b64a3360c8c..b0f93628dcd 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -1348,6 +1348,14 @@ static int sa1111_bus_resume(struct device *dev) return ret; } +static void sa1111_bus_shutdown(struct device *dev) +{ + struct sa1111_driver *drv = SA1111_DRV(dev->driver); + + if (drv && drv->shutdown) + drv->shutdown(SA1111_DEV(dev)); +} + static int sa1111_bus_probe(struct device *dev) { struct sa1111_dev *sadev = SA1111_DEV(dev); @@ -1377,6 +1385,7 @@ struct bus_type sa1111_bus_type = { .remove = sa1111_bus_remove, .suspend = sa1111_bus_suspend, .resume = sa1111_bus_resume, + .shutdown = sa1111_bus_shutdown, }; EXPORT_SYMBOL(sa1111_bus_type); diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h index 92ed254c175..29e320f6f85 100644 --- a/arch/arm/include/asm/hardware/sa1111.h +++ b/arch/arm/include/asm/hardware/sa1111.h @@ -548,6 +548,7 @@ struct sa1111_driver { int (*remove)(struct sa1111_dev *); int (*suspend)(struct sa1111_dev *, pm_message_t); int (*resume)(struct sa1111_dev *); + void (*shutdown)(struct sa1111_dev *); }; #define SA1111_DRV(_d) container_of((_d), struct sa1111_driver, drv) From ae99ddbc976572194e8a68cb9ca1e27805ce30c7 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Jan 2012 13:25:47 +0000 Subject: [PATCH 039/125] ARM: sa1111: add platform enable/disable functions Add platform hooks to be called when individual sa1111 devices are enabled and disabled. This will allow us to move some platform specifics out of the individual drivers. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 22 +++++++++++++++++----- arch/arm/include/asm/hardware/sa1111.h | 8 ++++++-- drivers/input/serio/sa1111ps2.c | 6 +++++- drivers/pcmcia/sa1111_generic.c | 11 +++++++++-- drivers/usb/host/ohci-sa1111.c | 19 ++++++++++++++----- 5 files changed, 51 insertions(+), 15 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index b0f93628dcd..1366e82e670 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -106,6 +106,7 @@ struct sa1111 { int irq_base; /* base for cascaded on-chip IRQs */ spinlock_t lock; void __iomem *base; + struct sa1111_platform_data *pdata; #ifdef CONFIG_PM void *saved_state; #endif @@ -756,6 +757,7 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq) sachip->dev = me; dev_set_drvdata(sachip->dev, sachip); + sachip->pdata = pd; sachip->phys = mem->start; sachip->irq = irq; @@ -1282,16 +1284,23 @@ EXPORT_SYMBOL(sa1111_set_sleep_io); * sa1111_enable_device - enable an on-chip SA1111 function block * @sadev: SA1111 function block device to enable */ -void sa1111_enable_device(struct sa1111_dev *sadev) +int sa1111_enable_device(struct sa1111_dev *sadev) { struct sa1111 *sachip = sa1111_chip_driver(sadev); unsigned long flags; unsigned int val; + int ret = 0; - spin_lock_irqsave(&sachip->lock, flags); - val = sa1111_readl(sachip->base + SA1111_SKPCR); - sa1111_writel(val | sadev->skpcr_mask, sachip->base + SA1111_SKPCR); - spin_unlock_irqrestore(&sachip->lock, flags); + if (sachip->pdata && sachip->pdata->enable) + ret = sachip->pdata->enable(sachip->pdata->data, sadev->devid); + + if (ret == 0) { + spin_lock_irqsave(&sachip->lock, flags); + val = sa1111_readl(sachip->base + SA1111_SKPCR); + sa1111_writel(val | sadev->skpcr_mask, sachip->base + SA1111_SKPCR); + spin_unlock_irqrestore(&sachip->lock, flags); + } + return ret; } EXPORT_SYMBOL(sa1111_enable_device); @@ -1309,6 +1318,9 @@ void sa1111_disable_device(struct sa1111_dev *sadev) val = sa1111_readl(sachip->base + SA1111_SKPCR); sa1111_writel(val & ~sadev->skpcr_mask, sachip->base + SA1111_SKPCR); spin_unlock_irqrestore(&sachip->lock, flags); + + if (sachip->pdata && sachip->pdata->disable) + sachip->pdata->disable(sachip->pdata->data, sadev->devid); } EXPORT_SYMBOL(sa1111_disable_device); diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h index 29e320f6f85..d54d781021c 100644 --- a/arch/arm/include/asm/hardware/sa1111.h +++ b/arch/arm/include/asm/hardware/sa1111.h @@ -556,9 +556,10 @@ struct sa1111_driver { #define SA1111_DRIVER_NAME(_sadev) ((_sadev)->dev.driver->name) /* - * These frob the SKPCR register. + * These frob the SKPCR register, and call platform specific + * enable/disable functions. */ -void sa1111_enable_device(struct sa1111_dev *); +int sa1111_enable_device(struct sa1111_dev *); void sa1111_disable_device(struct sa1111_dev *); unsigned int sa1111_pll_clock(struct sa1111_dev *); @@ -581,6 +582,9 @@ void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned i struct sa1111_platform_data { int irq_base; /* base for cascaded on-chip IRQs */ + void *data; + int (*enable)(void *, unsigned); + void (*disable)(void *, unsigned); }; #endif /* _ASM_ARCH_SA1111 */ diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c index 40ec545fbd4..ad7d23b5c6f 100644 --- a/drivers/input/serio/sa1111ps2.c +++ b/drivers/input/serio/sa1111ps2.c @@ -124,13 +124,16 @@ static int ps2_open(struct serio *io) struct ps2if *ps2if = io->port_data; int ret; - sa1111_enable_device(ps2if->dev); + ret = sa1111_enable_device(ps2if->dev); + if (ret) + return ret; ret = request_irq(ps2if->dev->irq[0], ps2_rxint, 0, SA1111_DRIVER_NAME(ps2if->dev), ps2if); if (ret) { printk(KERN_ERR "sa1111ps2: could not allocate IRQ%d: %d\n", ps2if->dev->irq[0], ret); + sa1111_disable_device(ps2if->dev); return ret; } @@ -140,6 +143,7 @@ static int ps2_open(struct serio *io) printk(KERN_ERR "sa1111ps2: could not allocate IRQ%d: %d\n", ps2if->dev->irq[1], ret); free_irq(ps2if->dev->irq[0], ps2if); + sa1111_disable_device(ps2if->dev); return ret; } diff --git a/drivers/pcmcia/sa1111_generic.c b/drivers/pcmcia/sa1111_generic.c index 27f2fe3b7fb..0735c3e6a8b 100644 --- a/drivers/pcmcia/sa1111_generic.c +++ b/drivers/pcmcia/sa1111_generic.c @@ -163,12 +163,18 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops, static int pcmcia_probe(struct sa1111_dev *dev) { void __iomem *base; + int ret; + + ret = sa1111_enable_device(dev); + if (ret) + return ret; dev_set_drvdata(&dev->dev, NULL); - if (!request_mem_region(dev->res.start, 512, - SA1111_DRIVER_NAME(dev))) + if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) { + sa1111_disable_device(dev); return -EBUSY; + } base = dev->mapbase; @@ -212,6 +218,7 @@ static int __devexit pcmcia_remove(struct sa1111_dev *dev) } release_mem_region(dev->res.start, 512); + sa1111_disable_device(dev); return 0; } diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 7d2aa62ea61..f61f4f90529 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -27,9 +27,10 @@ extern int usb_disabled(void); /*-------------------------------------------------------------------------*/ -static void sa1111_start_hc(struct sa1111_dev *dev) +static int sa1111_start_hc(struct sa1111_dev *dev) { unsigned int usb_rst = 0; + int ret; printk(KERN_DEBUG "%s: starting SA-1111 OHCI USB Controller\n", __FILE__); @@ -57,9 +58,13 @@ static void sa1111_start_hc(struct sa1111_dev *dev) * Now, carefully enable the USB clock, and take * the USB host controller out of reset. */ - sa1111_enable_device(dev); - udelay(11); - sa1111_writel(usb_rst, dev->mapbase + SA1111_USB_RESET); + ret = sa1111_enable_device(dev); + if (ret == 0) { + udelay(11); + sa1111_writel(usb_rst, dev->mapbase + SA1111_USB_RESET); + } + + return ret; } static void sa1111_stop_hc(struct sa1111_dev *dev) @@ -140,7 +145,10 @@ int usb_hcd_sa1111_probe (const struct hc_driver *driver, } hcd->regs = dev->mapbase; - sa1111_start_hc(dev); + ret = sa1111_start_hc(dev); + if (ret) + goto err2; + ohci_hcd_init(hcd_to_ohci(hcd)); retval = usb_add_hcd(hcd, dev->irq[1], 0); @@ -148,6 +156,7 @@ int usb_hcd_sa1111_probe (const struct hc_driver *driver, return retval; sa1111_stop_hc(dev); + err2: release_mem_region(hcd->rsrc_start, hcd->rsrc_len); err1: usb_put_hcd(hcd); From 3259701cc2969ae16a0018d7e3a89f327fa23a6e Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Jan 2012 13:28:35 +0000 Subject: [PATCH 040/125] ARM: sa11x0: badge4: move board specific ohci initialization to badge4.c Move the handling of the 5v supply into badge4.c, removing this board specific detail from the sa1111 ohci driver. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/mach-sa1100/badge4.c | 15 +++++++++++++++ drivers/usb/host/ohci-sa1111.c | 14 -------------- 2 files changed, 15 insertions(+), 14 deletions(-) diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c index b07a2c024cb..d84924993ba 100644 --- a/arch/arm/mach-sa1100/badge4.c +++ b/arch/arm/mach-sa1100/badge4.c @@ -51,8 +51,23 @@ static struct resource sa1111_resources[] = { }, }; +static int badge4_sa1111_enable(void *data, unsigned devid) +{ + if (devid == SA1111_DEVID_USB) + badge4_set_5V(BADGE4_5V_USB, 1); + return 0; +} + +static void badge4_sa1111_disable(void *data, unsigned devid) +{ + if (devid == SA1111_DEVID_USB) + badge4_set_5V(BADGE4_5V_USB, 0); +} + static struct sa1111_platform_data sa1111_info = { .irq_base = IRQ_BOARD_END, + .enable = badge4_sa1111_enable, + .disable = badge4_sa1111_disable, }; static u64 sa1111_dmamask = 0xffffffffUL; diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index f61f4f90529..48300080433 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -16,7 +16,6 @@ #include #include #include -#include #include #ifndef CONFIG_SA1111 @@ -35,12 +34,6 @@ static int sa1111_start_hc(struct sa1111_dev *dev) printk(KERN_DEBUG "%s: starting SA-1111 OHCI USB Controller\n", __FILE__); -#ifdef CONFIG_SA1100_BADGE4 - if (machine_is_badge4()) { - badge4_set_5V(BADGE4_5V_USB, 1); - } -#endif - if (machine_is_xp860() || machine_has_neponset() || machine_is_pfs168() || @@ -84,13 +77,6 @@ static void sa1111_stop_hc(struct sa1111_dev *dev) * Stop the USB clock. */ sa1111_disable_device(dev); - -#ifdef CONFIG_SA1100_BADGE4 - if (machine_is_badge4()) { - /* Disable power to the USB bus */ - badge4_set_5V(BADGE4_5V_USB, 0); - } -#endif } From e5c0fc4185c551c270868dcb6573604db2bc3171 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 25 Jan 2012 10:42:52 +0000 Subject: [PATCH 041/125] ARM: sa1111: change devid to be a bitmask Change the sa1111 device id to be a bitmask. This allows us to specify the actual device, while allowing a single driver to bind to both PS2 devices. Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 12 ++++++------ arch/arm/include/asm/hardware/sa1111.h | 20 +++++++++++--------- 2 files changed, 17 insertions(+), 15 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index 1366e82e670..4bdf1bb283d 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -158,7 +158,7 @@ static struct sa1111_dev_info sa1111_devices[] = { { .offset = SA1111_KBD, .skpcr_mask = SKPCR_PTCLKEN, - .devid = SA1111_DEVID_PS2, + .devid = SA1111_DEVID_PS2_KBD, .irq = { IRQ_TPRXINT, IRQ_TPTXINT @@ -167,7 +167,7 @@ static struct sa1111_dev_info sa1111_devices[] = { { .offset = SA1111_MSE, .skpcr_mask = SKPCR_PMCLKEN, - .devid = SA1111_DEVID_PS2, + .devid = SA1111_DEVID_PS2_MSE, .irq = { IRQ_MSRXINT, IRQ_MSTXINT @@ -835,12 +835,12 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq) has_devs = ~0; if (machine_is_assabet() || machine_is_jornada720() || machine_is_badge4()) - has_devs &= ~(1 << 4); + has_devs &= ~SA1111_DEVID_PS2_MSE; else - has_devs &= ~(1 << 1); + has_devs &= ~SA1111_DEVID_SAC; for (i = 0; i < ARRAY_SIZE(sa1111_devices); i++) - if (has_devs & (1 << i)) + if (sa1111_devices[i].devid & has_devs) sa1111_init_one_child(sachip, mem, &sa1111_devices[i]); return 0; @@ -1335,7 +1335,7 @@ static int sa1111_match(struct device *_dev, struct device_driver *_drv) struct sa1111_dev *dev = SA1111_DEV(_dev); struct sa1111_driver *drv = SA1111_DRV(_drv); - return dev->devid == drv->devid; + return dev->devid & drv->devid; } static int sa1111_bus_suspend(struct device *dev, pm_message_t state) diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h index d54d781021c..37ad29d482f 100644 --- a/arch/arm/include/asm/hardware/sa1111.h +++ b/arch/arm/include/asm/hardware/sa1111.h @@ -516,15 +516,17 @@ extern struct bus_type sa1111_bus_type; -#define SA1111_DEVID_SBI 0 -#define SA1111_DEVID_SK 1 -#define SA1111_DEVID_USB 2 -#define SA1111_DEVID_SAC 3 -#define SA1111_DEVID_SSP 4 -#define SA1111_DEVID_PS2 5 -#define SA1111_DEVID_GPIO 6 -#define SA1111_DEVID_INT 7 -#define SA1111_DEVID_PCMCIA 8 +#define SA1111_DEVID_SBI (1 << 0) +#define SA1111_DEVID_SK (1 << 1) +#define SA1111_DEVID_USB (1 << 2) +#define SA1111_DEVID_SAC (1 << 3) +#define SA1111_DEVID_SSP (1 << 4) +#define SA1111_DEVID_PS2 (3 << 5) +#define SA1111_DEVID_PS2_KBD (1 << 5) +#define SA1111_DEVID_PS2_MSE (1 << 6) +#define SA1111_DEVID_GPIO (1 << 7) +#define SA1111_DEVID_INT (1 << 8) +#define SA1111_DEVID_PCMCIA (1 << 9) struct sa1111_dev { struct device dev; From 15877e9c8a12ced38ac31d8bf4f93f3634fbea3f Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 12:04:05 +0000 Subject: [PATCH 042/125] NET: sa11x0-ir: fix documentation bug Spell the module parameter correctly in comments. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index da2705061a6..751f2a9f283 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -15,7 +15,7 @@ * This driver takes one kernel command line parameter, sa1100ir=, with * the following options: * max_rate:baudrate - set the maximum baud rate - * power_leve:level - set the transmitter power level + * power_level:level - set the transmitter power level * tx_lpm:0|1 - set transmit low power mode */ #include From 22f0bf96de1506081a8b18ad3e0d04d5add70a4a Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 13:55:23 +0000 Subject: [PATCH 043/125] NET: sa11x0-ir: handle DMA mapping errors properly Handle DMA mapping errors in the rx skb allocation and tx paths. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 751f2a9f283..84fecce078f 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -82,7 +82,6 @@ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) return 0; si->rxskb = alloc_skb(HPSIR_MAX_RXLEN + 1, GFP_ATOMIC); - if (!si->rxskb) { printk(KERN_ERR "sa1100_ir: out of memory for RX SKB\n"); return -ENOMEM; @@ -97,6 +96,11 @@ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) si->rxbuf_dma = dma_map_single(si->dev, si->rxskb->data, HPSIR_MAX_RXLEN, DMA_FROM_DEVICE); + if (dma_mapping_error(si->dev, si->rxbuf_dma)) { + dev_kfree_skb_any(si->rxskb); + return -ENOMEM; + } + return 0; } @@ -518,7 +522,8 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev netif_rx(skb); } else { /* - * Remap the buffer. + * Remap the buffer - it was previously mapped, and we + * hope that this succeeds. */ si->rxbuf_dma = dma_map_single(si->dev, si->rxskb->data, HPSIR_MAX_RXLEN, @@ -701,6 +706,13 @@ static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev) si->txskb = skb; si->txbuf_dma = dma_map_single(si->dev, skb->data, skb->len, DMA_TO_DEVICE); + if (dma_mapping_error(si->dev, si->txbuf_dma)) { + si->txskb = NULL; + netif_wake_queue(dev); + dev->stats.tx_dropped++; + dev_kfree_skb(skb); + return NETDEV_TX_OK; + } sa1100_start_dma(si->txdma, si->txbuf_dma, skb->len); From d32386086b4a250bd71125f8d760cfffada0e422 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 12:07:24 +0000 Subject: [PATCH 044/125] NET: sa11x0-ir: set netdev's parent struct device Add the missing SET_NETDEV_DEV() call to set the parent device correctly for this network interface. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 84fecce078f..149a3b4aaec 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -919,6 +919,8 @@ static int sa1100_irda_probe(struct platform_device *pdev) if (!dev) goto err_mem_4; + SET_NETDEV_DEV(dev, &pdev->dev); + si = netdev_priv(dev); si->dev = &pdev->dev; si->pdata = pdev->dev.platform_data; From e556fdbde38f68d87f689473b112cc65ddacd6a4 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 12:02:17 +0000 Subject: [PATCH 045/125] NET: sa11x0-ir: obtain interrupt number from platform resources Convert the sa11x0-ir driver to obtain its interrupt number from the platform device resources, rather than via the asm/irq.h include. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 149a3b4aaec..2f5bf0bc845 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -35,7 +35,6 @@ #include #include -#include #include #include #include @@ -900,11 +899,15 @@ static int sa1100_irda_probe(struct platform_device *pdev) struct net_device *dev; struct sa1100_irda *si; unsigned int baudrate_mask; - int err; + int err, irq; if (!pdev->dev.platform_data) return -EINVAL; + irq = platform_get_irq(pdev, 0); + if (irq <= 0) + return irq < 0 ? irq : -ENXIO; + err = request_mem_region(__PREG(Ser2UTCR0), 0x24, "IrDA") ? 0 : -EBUSY; if (err) goto err_mem_1; @@ -936,7 +939,7 @@ static int sa1100_irda_probe(struct platform_device *pdev) goto err_mem_5; dev->netdev_ops = &sa1100_irda_netdev_ops; - dev->irq = IRQ_Ser2ICP; + dev->irq = irq; irda_init_max_qos_capabilies(&si->qos); From 885767ca4ce0800c5d02eb66cc10a0494b7bf312 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 12:53:22 +0000 Subject: [PATCH 046/125] NET: sa11x0-ir: containerize DMA data Both the transmit and receive DMA store identical data: the skb, dma address, and the dma registers. Move this data into its own data structure. The following replacements were used: rxskb -> dma_rx.skb rxbuf_dma -> dma_rx.dma rxdma -> dma_rx.regs txskb -> dma_tx.skb txbuf_dma -> dma_tx.dma txdma -> dma_tx.regs Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 94 ++++++++++++++++++------------------ 1 file changed, 48 insertions(+), 46 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 2f5bf0bc845..adb7fea78c2 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -43,6 +43,12 @@ static int power_level = 3; static int tx_lpm; static int max_rate = 4000000; +struct sa1100_buf { + struct sk_buff *skb; + dma_addr_t dma; + dma_regs_t *regs; +}; + struct sa1100_irda { unsigned char hscr0; unsigned char utcr4; @@ -52,12 +58,8 @@ struct sa1100_irda { int speed; int newspeed; - struct sk_buff *txskb; - struct sk_buff *rxskb; - dma_addr_t txbuf_dma; - dma_addr_t rxbuf_dma; - dma_regs_t *txdma; - dma_regs_t *rxdma; + struct sa1100_buf dma_rx; + struct sa1100_buf dma_tx; struct device *dev; struct irda_platform_data *pdata; @@ -77,11 +79,11 @@ struct sa1100_irda { */ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) { - if (si->rxskb) + if (si->dma_rx.skb) return 0; - si->rxskb = alloc_skb(HPSIR_MAX_RXLEN + 1, GFP_ATOMIC); - if (!si->rxskb) { + si->dma_rx.skb = alloc_skb(HPSIR_MAX_RXLEN + 1, GFP_ATOMIC); + if (!si->dma_rx.skb) { printk(KERN_ERR "sa1100_ir: out of memory for RX SKB\n"); return -ENOMEM; } @@ -90,13 +92,13 @@ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) * Align any IP headers that may be contained * within the frame. */ - skb_reserve(si->rxskb, 1); + skb_reserve(si->dma_rx.skb, 1); - si->rxbuf_dma = dma_map_single(si->dev, si->rxskb->data, + si->dma_rx.dma = dma_map_single(si->dev, si->dma_rx.skb->data, HPSIR_MAX_RXLEN, DMA_FROM_DEVICE); - if (dma_mapping_error(si->dev, si->rxbuf_dma)) { - dev_kfree_skb_any(si->rxskb); + if (dma_mapping_error(si->dev, si->dma_rx.dma)) { + dev_kfree_skb_any(si->dma_rx.skb); return -ENOMEM; } @@ -109,7 +111,7 @@ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) */ static void sa1100_irda_rx_dma_start(struct sa1100_irda *si) { - if (!si->rxskb) { + if (!si->dma_rx.skb) { printk(KERN_ERR "sa1100_ir: rx buffer went missing\n"); return; } @@ -122,8 +124,8 @@ static void sa1100_irda_rx_dma_start(struct sa1100_irda *si) /* * Enable the DMA, receiver and receive interrupt. */ - sa1100_clear_dma(si->rxdma); - sa1100_start_dma(si->rxdma, si->rxbuf_dma, HPSIR_MAX_RXLEN); + sa1100_clear_dma(si->dma_rx.regs); + sa1100_start_dma(si->dma_rx.regs, si->dma_rx.dma, HPSIR_MAX_RXLEN); Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_RXE; } @@ -144,7 +146,7 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed) * Stop the receive DMA. */ if (IS_FIR(si)) - sa1100_stop_dma(si->rxdma); + sa1100_stop_dma(si->dma_rx.regs); local_irq_save(flags); @@ -280,8 +282,8 @@ static void sa1100_irda_shutdown(struct sa1100_irda *si) /* * Stop all DMA activity. */ - sa1100_stop_dma(si->rxdma); - sa1100_stop_dma(si->txdma); + sa1100_stop_dma(si->dma_rx.regs); + sa1100_stop_dma(si->dma_tx.regs); /* Disable the port. */ Ser2UTCR3 = 0; @@ -460,7 +462,7 @@ static void sa1100_irda_hpsir_irq(struct net_device *dev) static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev) { - struct sk_buff *skb = si->rxskb; + struct sk_buff *skb = si->dma_rx.skb; dma_addr_t dma_addr; unsigned int len, stat, data; @@ -472,11 +474,11 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev /* * Get the current data position. */ - dma_addr = sa1100_get_dma_pos(si->rxdma); - len = dma_addr - si->rxbuf_dma; + dma_addr = sa1100_get_dma_pos(si->dma_rx.regs); + len = dma_addr - si->dma_rx.dma; if (len > HPSIR_MAX_RXLEN) len = HPSIR_MAX_RXLEN; - dma_unmap_single(si->dev, si->rxbuf_dma, len, DMA_FROM_DEVICE); + dma_unmap_single(si->dev, si->dma_rx.dma, len, DMA_FROM_DEVICE); do { /* @@ -504,7 +506,7 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev } while (Ser2HSSR0 & HSSR0_EIF); if (stat & HSSR1_EOF) { - si->rxskb = NULL; + si->dma_rx.skb = NULL; skb_put(skb, len); skb->dev = dev; @@ -524,7 +526,7 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev * Remap the buffer - it was previously mapped, and we * hope that this succeeds. */ - si->rxbuf_dma = dma_map_single(si->dev, si->rxskb->data, + si->dma_rx.dma = dma_map_single(si->dev, si->dma_rx.skb->data, HPSIR_MAX_RXLEN, DMA_FROM_DEVICE); } @@ -543,7 +545,7 @@ static void sa1100_irda_fir_irq(struct net_device *dev) /* * Stop RX DMA */ - sa1100_stop_dma(si->rxdma); + sa1100_stop_dma(si->dma_rx.regs); /* * Framing error - we throw away the packet completely. @@ -600,9 +602,9 @@ static void sa1100_irda_txdma_irq(void *id) { struct net_device *dev = id; struct sa1100_irda *si = netdev_priv(dev); - struct sk_buff *skb = si->txskb; + struct sk_buff *skb = si->dma_tx.skb; - si->txskb = NULL; + si->dma_tx.skb = NULL; /* * Wait for the transmission to complete. Unfortunately, @@ -620,7 +622,7 @@ static void sa1100_irda_txdma_irq(void *id) /* * Do we need to change speed? Note that we're lazy - * here - we don't free the old rxskb. We don't need + * here - we don't free the old dma_rx.skb. We don't need * to allocate a buffer either. */ if (si->newspeed) { @@ -638,7 +640,7 @@ static void sa1100_irda_txdma_irq(void *id) * Account and free the packet. */ if (skb) { - dma_unmap_single(si->dev, si->txbuf_dma, skb->len, DMA_TO_DEVICE); + dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, DMA_TO_DEVICE); dev->stats.tx_packets ++; dev->stats.tx_bytes += skb->len; dev_kfree_skb_irq(skb); @@ -698,22 +700,22 @@ static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev) /* * We must not be transmitting... */ - BUG_ON(si->txskb); + BUG_ON(si->dma_tx.skb); netif_stop_queue(dev); - si->txskb = skb; - si->txbuf_dma = dma_map_single(si->dev, skb->data, + si->dma_tx.skb = skb; + si->dma_tx.dma = dma_map_single(si->dev, skb->data, skb->len, DMA_TO_DEVICE); - if (dma_mapping_error(si->dev, si->txbuf_dma)) { - si->txskb = NULL; + if (dma_mapping_error(si->dev, si->dma_tx.dma)) { + si->dma_tx.skb = NULL; netif_wake_queue(dev); dev->stats.tx_dropped++; dev_kfree_skb(skb); return NETDEV_TX_OK; } - sa1100_start_dma(si->txdma, si->txbuf_dma, skb->len); + sa1100_start_dma(si->dma_tx.regs, si->dma_tx.dma, skb->len); /* * If we have a mean turn-around time, impose the specified @@ -785,12 +787,12 @@ static int sa1100_irda_start(struct net_device *dev) goto err_irq; err = sa1100_request_dma(DMA_Ser2HSSPRd, "IrDA receive", - NULL, NULL, &si->rxdma); + NULL, NULL, &si->dma_rx.regs); if (err) goto err_rx_dma; err = sa1100_request_dma(DMA_Ser2HSSPWr, "IrDA transmit", - sa1100_irda_txdma_irq, dev, &si->txdma); + sa1100_irda_txdma_irq, dev, &si->dma_tx.regs); if (err) goto err_tx_dma; @@ -827,9 +829,9 @@ err_irlap: si->open = 0; sa1100_irda_shutdown(si); err_startup: - sa1100_free_dma(si->txdma); + sa1100_free_dma(si->dma_tx.regs); err_tx_dma: - sa1100_free_dma(si->rxdma); + sa1100_free_dma(si->dma_rx.regs); err_rx_dma: free_irq(dev->irq, dev); err_irq: @@ -847,11 +849,11 @@ static int sa1100_irda_stop(struct net_device *dev) * If we have been doing DMA receive, make sure we * tidy that up cleanly. */ - if (si->rxskb) { - dma_unmap_single(si->dev, si->rxbuf_dma, HPSIR_MAX_RXLEN, + if (si->dma_rx.skb) { + dma_unmap_single(si->dev, si->dma_rx.dma, HPSIR_MAX_RXLEN, DMA_FROM_DEVICE); - dev_kfree_skb(si->rxskb); - si->rxskb = NULL; + dev_kfree_skb(si->dma_rx.skb); + si->dma_rx.skb = NULL; } /* Stop IrLAP */ @@ -866,8 +868,8 @@ static int sa1100_irda_stop(struct net_device *dev) /* * Free resources */ - sa1100_free_dma(si->txdma); - sa1100_free_dma(si->rxdma); + sa1100_free_dma(si->dma_tx.regs); + sa1100_free_dma(si->dma_rx.regs); free_irq(dev->irq, dev); sa1100_set_power(si, 0); From ba84525bd9015e7dd20f7c97a2a96b0a238b0223 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 15:38:15 +0000 Subject: [PATCH 047/125] NET: sa11x0-ir: fix leak of tx skb Ensure that we unmap and free a pending transmit skb when the interface is stopped. We rearrange the code a little bit to give all places a similar layout when freeing the skb in both the completion and interface stop paths - this gives some consistency to the code. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 29 +++++++++++++++++++---------- 1 file changed, 19 insertions(+), 10 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index adb7fea78c2..9dc564830c9 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -602,9 +602,7 @@ static void sa1100_irda_txdma_irq(void *id) { struct net_device *dev = id; struct sa1100_irda *si = netdev_priv(dev); - struct sk_buff *skb = si->dma_tx.skb; - - si->dma_tx.skb = NULL; + struct sk_buff *skb; /* * Wait for the transmission to complete. Unfortunately, @@ -636,14 +634,15 @@ static void sa1100_irda_txdma_irq(void *id) */ sa1100_irda_rx_dma_start(si); - /* - * Account and free the packet. - */ + /* Account and free the packet. */ + skb = si->dma_tx.skb; if (skb) { - dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, DMA_TO_DEVICE); + dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, + DMA_TO_DEVICE); dev->stats.tx_packets ++; dev->stats.tx_bytes += skb->len; dev_kfree_skb_irq(skb); + si->dma_tx.skb = NULL; } /* @@ -841,21 +840,31 @@ err_irq: static int sa1100_irda_stop(struct net_device *dev) { struct sa1100_irda *si = netdev_priv(dev); + struct sk_buff *skb; disable_irq(dev->irq); sa1100_irda_shutdown(si); /* - * If we have been doing DMA receive, make sure we + * If we have been doing any DMA activity, make sure we * tidy that up cleanly. */ - if (si->dma_rx.skb) { + skb = si->dma_rx.skb; + if (skb) { dma_unmap_single(si->dev, si->dma_rx.dma, HPSIR_MAX_RXLEN, DMA_FROM_DEVICE); - dev_kfree_skb(si->dma_rx.skb); + dev_kfree_skb(skb); si->dma_rx.skb = NULL; } + skb = si->dma_tx.skb; + if (skb) { + dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, + DMA_TO_DEVICE); + dev_kfree_skb(skb); + si->dma_tx.skb = NULL; + } + /* Stop IrLAP */ if (si->irlap) { irlap_close(si->irlap); From cbe1d24fb70751ef14801338aa945e807ba63a90 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 16:40:07 +0000 Subject: [PATCH 048/125] NET: sa11x0-ir: move sa1100_irda_{startup,shutdown,suspend,resume} Places these functions in better locations in the file, near where they are used. This saves some tiresome paging up/down. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 262 +++++++++++++++++------------------ 1 file changed, 131 insertions(+), 131 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 9dc564830c9..32ac4a44ce7 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -230,137 +230,6 @@ sa1100_set_power(struct sa1100_irda *si, unsigned int state) return ret; } -static int sa1100_irda_startup(struct sa1100_irda *si) -{ - int ret; - - /* - * Ensure that the ports for this device are setup correctly. - */ - if (si->pdata->startup) { - ret = si->pdata->startup(si->dev); - if (ret) - return ret; - } - - /* - * Configure PPC for IRDA - we want to drive TXD2 low. - * We also want to drive this pin low during sleep. - */ - PPSR &= ~PPC_TXD2; - PSDR &= ~PPC_TXD2; - PPDR |= PPC_TXD2; - - /* - * Enable HP-SIR modulation, and ensure that the port is disabled. - */ - Ser2UTCR3 = 0; - Ser2HSCR0 = HSCR0_UART; - Ser2UTCR4 = si->utcr4; - Ser2UTCR0 = UTCR0_8BitData; - Ser2HSCR2 = HSCR2_TrDataH | HSCR2_RcDataL; - - /* - * Clear status register - */ - Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID; - - ret = sa1100_irda_set_speed(si, si->speed = 9600); - if (ret) { - Ser2UTCR3 = 0; - Ser2HSCR0 = 0; - - if (si->pdata->shutdown) - si->pdata->shutdown(si->dev); - } - - return ret; -} - -static void sa1100_irda_shutdown(struct sa1100_irda *si) -{ - /* - * Stop all DMA activity. - */ - sa1100_stop_dma(si->dma_rx.regs); - sa1100_stop_dma(si->dma_tx.regs); - - /* Disable the port. */ - Ser2UTCR3 = 0; - Ser2HSCR0 = 0; - - if (si->pdata->shutdown) - si->pdata->shutdown(si->dev); -} - -#ifdef CONFIG_PM -/* - * Suspend the IrDA interface. - */ -static int sa1100_irda_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct net_device *dev = platform_get_drvdata(pdev); - struct sa1100_irda *si; - - if (!dev) - return 0; - - si = netdev_priv(dev); - if (si->open) { - /* - * Stop the transmit queue - */ - netif_device_detach(dev); - disable_irq(dev->irq); - sa1100_irda_shutdown(si); - __sa1100_irda_set_power(si, 0); - } - - return 0; -} - -/* - * Resume the IrDA interface. - */ -static int sa1100_irda_resume(struct platform_device *pdev) -{ - struct net_device *dev = platform_get_drvdata(pdev); - struct sa1100_irda *si; - - if (!dev) - return 0; - - si = netdev_priv(dev); - if (si->open) { - /* - * If we missed a speed change, initialise at the new speed - * directly. It is debatable whether this is actually - * required, but in the interests of continuing from where - * we left off it is desirable. The converse argument is - * that we should re-negotiate at 9600 baud again. - */ - if (si->newspeed) { - si->speed = si->newspeed; - si->newspeed = 0; - } - - sa1100_irda_startup(si); - __sa1100_irda_set_power(si, si->power); - enable_irq(dev->irq); - - /* - * This automatically wakes up the queue - */ - netif_device_attach(dev); - } - - return 0; -} -#else -#define sa1100_irda_suspend NULL -#define sa1100_irda_resume NULL -#endif - /* * HP-SIR format interrupt service routines. */ @@ -774,6 +643,69 @@ sa1100_irda_ioctl(struct net_device *dev, struct ifreq *ifreq, int cmd) return ret; } +static int sa1100_irda_startup(struct sa1100_irda *si) +{ + int ret; + + /* + * Ensure that the ports for this device are setup correctly. + */ + if (si->pdata->startup) { + ret = si->pdata->startup(si->dev); + if (ret) + return ret; + } + + /* + * Configure PPC for IRDA - we want to drive TXD2 low. + * We also want to drive this pin low during sleep. + */ + PPSR &= ~PPC_TXD2; + PSDR &= ~PPC_TXD2; + PPDR |= PPC_TXD2; + + /* + * Enable HP-SIR modulation, and ensure that the port is disabled. + */ + Ser2UTCR3 = 0; + Ser2HSCR0 = HSCR0_UART; + Ser2UTCR4 = si->utcr4; + Ser2UTCR0 = UTCR0_8BitData; + Ser2HSCR2 = HSCR2_TrDataH | HSCR2_RcDataL; + + /* + * Clear status register + */ + Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID; + + ret = sa1100_irda_set_speed(si, si->speed = 9600); + if (ret) { + Ser2UTCR3 = 0; + Ser2HSCR0 = 0; + + if (si->pdata->shutdown) + si->pdata->shutdown(si->dev); + } + + return ret; +} + +static void sa1100_irda_shutdown(struct sa1100_irda *si) +{ + /* + * Stop all DMA activity. + */ + sa1100_stop_dma(si->dma_rx.regs); + sa1100_stop_dma(si->dma_tx.regs); + + /* Disable the port. */ + Ser2UTCR3 = 0; + Ser2HSCR0 = 0; + + if (si->pdata->shutdown) + si->pdata->shutdown(si->dev); +} + static int sa1100_irda_start(struct net_device *dev) { struct sa1100_irda *si = netdev_priv(dev); @@ -1024,6 +956,74 @@ static int sa1100_irda_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +/* + * Suspend the IrDA interface. + */ +static int sa1100_irda_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct sa1100_irda *si; + + if (!dev) + return 0; + + si = netdev_priv(dev); + if (si->open) { + /* + * Stop the transmit queue + */ + netif_device_detach(dev); + disable_irq(dev->irq); + sa1100_irda_shutdown(si); + __sa1100_irda_set_power(si, 0); + } + + return 0; +} + +/* + * Resume the IrDA interface. + */ +static int sa1100_irda_resume(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct sa1100_irda *si; + + if (!dev) + return 0; + + si = netdev_priv(dev); + if (si->open) { + /* + * If we missed a speed change, initialise at the new speed + * directly. It is debatable whether this is actually + * required, but in the interests of continuing from where + * we left off it is desirable. The converse argument is + * that we should re-negotiate at 9600 baud again. + */ + if (si->newspeed) { + si->speed = si->newspeed; + si->newspeed = 0; + } + + sa1100_irda_startup(si); + __sa1100_irda_set_power(si, si->power); + enable_irq(dev->irq); + + /* + * This automatically wakes up the queue + */ + netif_device_attach(dev); + } + + return 0; +} +#else +#define sa1100_irda_suspend NULL +#define sa1100_irda_resume NULL +#endif + static struct platform_driver sa1100ir_driver = { .probe = sa1100_irda_probe, .remove = sa1100_irda_remove, From 0e888ee31566c3f5071474ddd68457a7ad2ae5ac Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 16:30:44 +0000 Subject: [PATCH 049/125] NET: sa11x0-ir: factor out speed checks Whenever we complete a transmit, we always check for a speed change. This check was open coded in several places. Provide a helper function to do this instead. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 32ac4a44ce7..bfae34fa7a9 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -70,6 +70,8 @@ struct sa1100_irda { iobuff_t rx_buff; }; +static int sa1100_irda_set_speed(struct sa1100_irda *, int); + #define IS_FIR(si) ((si)->speed >= 4000000) #define HPSIR_MAX_RXLEN 2047 @@ -129,6 +131,14 @@ static void sa1100_irda_rx_dma_start(struct sa1100_irda *si) Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_RXE; } +static void sa1100_irda_check_speed(struct sa1100_irda *si) +{ + if (si->newspeed) { + sa1100_irda_set_speed(si, si->newspeed); + si->newspeed = 0; + } +} + /* * Set the IrDA communications speed. */ @@ -318,10 +328,7 @@ static void sa1100_irda_hpsir_irq(struct net_device *dev) Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID; Ser2UTCR3 = UTCR3_RIE | UTCR3_RXE | UTCR3_TXE; - if (si->newspeed) { - sa1100_irda_set_speed(si, si->newspeed); - si->newspeed = 0; - } + sa1100_irda_check_speed(si); /* I'm hungry! */ netif_wake_queue(dev); @@ -492,10 +499,7 @@ static void sa1100_irda_txdma_irq(void *id) * here - we don't free the old dma_rx.skb. We don't need * to allocate a buffer either. */ - if (si->newspeed) { - sa1100_irda_set_speed(si, si->newspeed); - si->newspeed = 0; - } + sa1100_irda_check_speed(si); /* * Start reception. This disables the transmitter for @@ -538,10 +542,7 @@ static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev) * If this is an empty frame, we can bypass a lot. */ if (skb->len == 0) { - if (si->newspeed) { - si->newspeed = 0; - sa1100_irda_set_speed(si, speed); - } + sa1100_irda_check_speed(si); dev_kfree_skb(skb); return NETDEV_TX_OK; } From 3d26db137ac3169623a132ea310d26af6a48bf88 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 16:16:39 +0000 Subject: [PATCH 050/125] NET: sa11x0-ir: split SIR and FIR tx functions Split the SIR and FIR transmit functions, as they behave differently. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 118 ++++++++++++++++++++--------------- 1 file changed, 66 insertions(+), 52 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index bfae34fa7a9..8b8cf415260 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -68,6 +68,8 @@ struct sa1100_irda { iobuff_t tx_buff; iobuff_t rx_buff; + + int (*tx_start)(struct sk_buff *, struct net_device *, struct sa1100_irda *); }; static int sa1100_irda_set_speed(struct sa1100_irda *, int); @@ -139,6 +141,63 @@ static void sa1100_irda_check_speed(struct sa1100_irda *si) } } +/* + * HP-SIR format support. + */ +static int sa1100_irda_sir_tx_start(struct sk_buff *skb, struct net_device *dev, + struct sa1100_irda *si) +{ + si->tx_buff.data = si->tx_buff.head; + si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data, + si->tx_buff.truesize); + + /* + * Set the transmit interrupt enable. This will fire off an + * interrupt immediately. Note that we disable the receiver + * so we won't get spurious characters received. + */ + Ser2UTCR3 = UTCR3_TIE | UTCR3_TXE; + + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +/* + * FIR format support. + */ +static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, + struct sa1100_irda *si) +{ + int mtt = irda_get_mtt(skb); + + si->dma_tx.skb = skb; + si->dma_tx.dma = dma_map_single(si->dev, skb->data, skb->len, + DMA_TO_DEVICE); + if (dma_mapping_error(si->dev, si->dma_tx.dma)) { + si->dma_tx.skb = NULL; + netif_wake_queue(dev); + dev->stats.tx_dropped++; + dev_kfree_skb(skb); + return NETDEV_TX_OK; + } + + sa1100_start_dma(si->dma_tx.regs, si->dma_tx.dma, skb->len); + + /* + * If we have a mean turn-around time, impose the specified + * specified delay. We could shorten this by timing from + * the point we received the packet. + */ + if (mtt) + udelay(mtt); + + Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_TXE; + + return NETDEV_TX_OK; +} + + /* * Set the IrDA communications speed. */ @@ -176,6 +235,7 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed) si->pdata->set_speed(si->dev, speed); si->speed = speed; + si->tx_start = sa1100_irda_sir_tx_start; local_irq_restore(flags); ret = 0; @@ -191,6 +251,7 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed) Ser2UTCR3 = 0; si->speed = speed; + si->tx_start = sa1100_irda_fir_tx_start; if (si->pdata->set_speed) si->pdata->set_speed(si->dev, speed); @@ -538,66 +599,19 @@ static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev) if (speed != si->speed && speed != -1) si->newspeed = speed; - /* - * If this is an empty frame, we can bypass a lot. - */ + /* If this is an empty frame, we can bypass a lot. */ if (skb->len == 0) { sa1100_irda_check_speed(si); dev_kfree_skb(skb); return NETDEV_TX_OK; } - if (!IS_FIR(si)) { - netif_stop_queue(dev); + netif_stop_queue(dev); - si->tx_buff.data = si->tx_buff.head; - si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data, - si->tx_buff.truesize); + /* We must not already have a skb to transmit... */ + BUG_ON(si->dma_tx.skb); - /* - * Set the transmit interrupt enable. This will fire - * off an interrupt immediately. Note that we disable - * the receiver so we won't get spurious characteres - * received. - */ - Ser2UTCR3 = UTCR3_TIE | UTCR3_TXE; - - dev_kfree_skb(skb); - } else { - int mtt = irda_get_mtt(skb); - - /* - * We must not be transmitting... - */ - BUG_ON(si->dma_tx.skb); - - netif_stop_queue(dev); - - si->dma_tx.skb = skb; - si->dma_tx.dma = dma_map_single(si->dev, skb->data, - skb->len, DMA_TO_DEVICE); - if (dma_mapping_error(si->dev, si->dma_tx.dma)) { - si->dma_tx.skb = NULL; - netif_wake_queue(dev); - dev->stats.tx_dropped++; - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - - sa1100_start_dma(si->dma_tx.regs, si->dma_tx.dma, skb->len); - - /* - * If we have a mean turn-around time, impose the specified - * specified delay. We could shorten this by timing from - * the point we received the packet. - */ - if (mtt) - udelay(mtt); - - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_TXE; - } - - return NETDEV_TX_OK; + return si->tx_start(skb, dev, si); } static int From 374f77390ca99b401ee121616524ed32c54d5ad6 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 16:26:15 +0000 Subject: [PATCH 051/125] NET: sa11x0-ir: indirect handling of SIR and FIR interrupts Use the same method for doing this as we do for the tx_start functions. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 50 +++++++++++++++++------------------- 1 file changed, 24 insertions(+), 26 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 8b8cf415260..32dee332267 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -70,6 +70,7 @@ struct sa1100_irda { iobuff_t rx_buff; int (*tx_start)(struct sk_buff *, struct net_device *, struct sa1100_irda *); + irqreturn_t (*irq)(struct net_device *, struct sa1100_irda *); }; static int sa1100_irda_set_speed(struct sa1100_irda *, int); @@ -197,6 +198,8 @@ static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, return NETDEV_TX_OK; } +static irqreturn_t sa1100_irda_sir_irq(struct net_device *, struct sa1100_irda *); +static irqreturn_t sa1100_irda_fir_irq(struct net_device *, struct sa1100_irda *); /* * Set the IrDA communications speed. @@ -236,6 +239,7 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed) si->speed = speed; si->tx_start = sa1100_irda_sir_tx_start; + si->irq = sa1100_irda_sir_irq; local_irq_restore(flags); ret = 0; @@ -252,6 +256,7 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed) si->speed = speed; si->tx_start = sa1100_irda_fir_tx_start; + si->irq = sa1100_irda_fir_irq; if (si->pdata->set_speed) si->pdata->set_speed(si->dev, speed); @@ -304,9 +309,8 @@ sa1100_set_power(struct sa1100_irda *si, unsigned int state) /* * HP-SIR format interrupt service routines. */ -static void sa1100_irda_hpsir_irq(struct net_device *dev) +static irqreturn_t sa1100_irda_sir_irq(struct net_device *dev, struct sa1100_irda *si) { - struct sa1100_irda *si = netdev_priv(dev); int status; status = Ser2UTSR0; @@ -395,6 +399,8 @@ static void sa1100_irda_hpsir_irq(struct net_device *dev) netif_wake_queue(dev); } } + + return IRQ_HANDLED; } static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev) @@ -475,10 +481,8 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev * * No matter what, we disable RX, process, and the restart RX. */ -static void sa1100_irda_fir_irq(struct net_device *dev) +static irqreturn_t sa1100_irda_fir_irq(struct net_device *dev, struct sa1100_irda *si) { - struct sa1100_irda *si = netdev_priv(dev); - /* * Stop RX DMA */ @@ -520,16 +524,16 @@ static void sa1100_irda_fir_irq(struct net_device *dev) * No matter what happens, we must restart reception. */ sa1100_irda_rx_dma_start(si); + + return IRQ_HANDLED; } static irqreturn_t sa1100_irda_irq(int irq, void *dev_id) { struct net_device *dev = dev_id; - if (IS_FIR(((struct sa1100_irda *)netdev_priv(dev)))) - sa1100_irda_fir_irq(dev); - else - sa1100_irda_hpsir_irq(dev); - return IRQ_HANDLED; + struct sa1100_irda *si = netdev_priv(dev); + + return si->irq(dev, si); } /* @@ -728,10 +732,6 @@ static int sa1100_irda_start(struct net_device *dev) si->speed = 9600; - err = request_irq(dev->irq, sa1100_irda_irq, 0, dev->name, dev); - if (err) - goto err_irq; - err = sa1100_request_dma(DMA_Ser2HSSPRd, "IrDA receive", NULL, NULL, &si->dma_rx.regs); if (err) @@ -742,11 +742,6 @@ static int sa1100_irda_start(struct net_device *dev) if (err) goto err_tx_dma; - /* - * The interrupt must remain disabled for now. - */ - disable_irq(dev->irq); - /* * Setup the serial port for the specified speed. */ @@ -762,15 +757,21 @@ static int sa1100_irda_start(struct net_device *dev) if (!si->irlap) goto err_irlap; + err = request_irq(dev->irq, sa1100_irda_irq, 0, dev->name, dev); + if (err) + goto err_irq; + /* * Now enable the interrupt and start the queue */ si->open = 1; sa1100_set_power(si, power_level); /* low power mode */ - enable_irq(dev->irq); + netif_start_queue(dev); return 0; +err_irq: + irlap_close(si->irlap); err_irlap: si->open = 0; sa1100_irda_shutdown(si); @@ -779,8 +780,6 @@ err_startup: err_tx_dma: sa1100_free_dma(si->dma_rx.regs); err_rx_dma: - free_irq(dev->irq, dev); -err_irq: return err; } @@ -789,7 +788,9 @@ static int sa1100_irda_stop(struct net_device *dev) struct sa1100_irda *si = netdev_priv(dev); struct sk_buff *skb; - disable_irq(dev->irq); + netif_stop_queue(dev); + + si->open = 0; sa1100_irda_shutdown(si); /* @@ -818,9 +819,6 @@ static int sa1100_irda_stop(struct net_device *dev) si->irlap = NULL; } - netif_stop_queue(dev); - si->open = 0; - /* * Free resources */ From a6b2ea66d630ad0687a1ac25d5a6afb282bd364a Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 17:10:01 +0000 Subject: [PATCH 052/125] NET: sa11x0-ir: move SIR and FIR interrupt support Move the interrupt handlers to the SIR and FIR sections of the file. This improves the localization of the protocol handlers. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 440 +++++++++++++++++------------------ 1 file changed, 216 insertions(+), 224 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 32dee332267..61b42d1265b 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -164,6 +164,100 @@ static int sa1100_irda_sir_tx_start(struct sk_buff *skb, struct net_device *dev, return NETDEV_TX_OK; } +static irqreturn_t sa1100_irda_sir_irq(struct net_device *dev, struct sa1100_irda *si) +{ + int status; + + status = Ser2UTSR0; + + /* + * Deal with any receive errors first. The bytes in error may be + * the only bytes in the receive FIFO, so we do this first. + */ + while (status & UTSR0_EIF) { + int stat, data; + + stat = Ser2UTSR1; + data = Ser2UTDR; + + if (stat & (UTSR1_FRE | UTSR1_ROR)) { + dev->stats.rx_errors++; + if (stat & UTSR1_FRE) + dev->stats.rx_frame_errors++; + if (stat & UTSR1_ROR) + dev->stats.rx_fifo_errors++; + } else + async_unwrap_char(dev, &dev->stats, &si->rx_buff, data); + + status = Ser2UTSR0; + } + + /* + * We must clear certain bits. + */ + Ser2UTSR0 = status & (UTSR0_RID | UTSR0_RBB | UTSR0_REB); + + if (status & UTSR0_RFS) { + /* + * There are at least 4 bytes in the FIFO. Read 3 bytes + * and leave the rest to the block below. + */ + async_unwrap_char(dev, &dev->stats, &si->rx_buff, Ser2UTDR); + async_unwrap_char(dev, &dev->stats, &si->rx_buff, Ser2UTDR); + async_unwrap_char(dev, &dev->stats, &si->rx_buff, Ser2UTDR); + } + + if (status & (UTSR0_RFS | UTSR0_RID)) { + /* + * Fifo contains more than 1 character. + */ + do { + async_unwrap_char(dev, &dev->stats, &si->rx_buff, + Ser2UTDR); + } while (Ser2UTSR1 & UTSR1_RNE); + + } + + if (status & UTSR0_TFS && si->tx_buff.len) { + /* + * Transmitter FIFO is not full + */ + do { + Ser2UTDR = *si->tx_buff.data++; + si->tx_buff.len -= 1; + } while (Ser2UTSR1 & UTSR1_TNF && si->tx_buff.len); + + if (si->tx_buff.len == 0) { + dev->stats.tx_packets++; + dev->stats.tx_bytes += si->tx_buff.data - + si->tx_buff.head; + + /* + * We need to ensure that the transmitter has + * finished. + */ + do + rmb(); + while (Ser2UTSR1 & UTSR1_TBY); + + /* + * Ok, we've finished transmitting. Now enable + * the receiver. Sometimes we get a receive IRQ + * immediately after a transmit... + */ + Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID; + Ser2UTCR3 = UTCR3_RIE | UTCR3_RXE | UTCR3_TXE; + + sa1100_irda_check_speed(si); + + /* I'm hungry! */ + netif_wake_queue(dev); + } + } + + return IRQ_HANDLED; +} + /* * FIR format support. */ @@ -198,8 +292,128 @@ static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, return NETDEV_TX_OK; } -static irqreturn_t sa1100_irda_sir_irq(struct net_device *, struct sa1100_irda *); -static irqreturn_t sa1100_irda_fir_irq(struct net_device *, struct sa1100_irda *); +static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev) +{ + struct sk_buff *skb = si->dma_rx.skb; + dma_addr_t dma_addr; + unsigned int len, stat, data; + + if (!skb) { + printk(KERN_ERR "sa1100_ir: SKB is NULL!\n"); + return; + } + + /* + * Get the current data position. + */ + dma_addr = sa1100_get_dma_pos(si->dma_rx.regs); + len = dma_addr - si->dma_rx.dma; + if (len > HPSIR_MAX_RXLEN) + len = HPSIR_MAX_RXLEN; + dma_unmap_single(si->dev, si->dma_rx.dma, len, DMA_FROM_DEVICE); + + do { + /* + * Read Status, and then Data. + */ + stat = Ser2HSSR1; + rmb(); + data = Ser2HSDR; + + if (stat & (HSSR1_CRE | HSSR1_ROR)) { + dev->stats.rx_errors++; + if (stat & HSSR1_CRE) + dev->stats.rx_crc_errors++; + if (stat & HSSR1_ROR) + dev->stats.rx_frame_errors++; + } else + skb->data[len++] = data; + + /* + * If we hit the end of frame, there's + * no point in continuing. + */ + if (stat & HSSR1_EOF) + break; + } while (Ser2HSSR0 & HSSR0_EIF); + + if (stat & HSSR1_EOF) { + si->dma_rx.skb = NULL; + + skb_put(skb, len); + skb->dev = dev; + skb_reset_mac_header(skb); + skb->protocol = htons(ETH_P_IRDA); + dev->stats.rx_packets++; + dev->stats.rx_bytes += len; + + /* + * Before we pass the buffer up, allocate a new one. + */ + sa1100_irda_rx_alloc(si); + + netif_rx(skb); + } else { + /* + * Remap the buffer - it was previously mapped, and we + * hope that this succeeds. + */ + si->dma_rx.dma = dma_map_single(si->dev, si->dma_rx.skb->data, + HPSIR_MAX_RXLEN, + DMA_FROM_DEVICE); + } +} + +/* + * We only have to handle RX events here; transmit events go via the TX + * DMA handler. We disable RX, process, and the restart RX. + */ +static irqreturn_t sa1100_irda_fir_irq(struct net_device *dev, struct sa1100_irda *si) +{ + /* + * Stop RX DMA + */ + sa1100_stop_dma(si->dma_rx.regs); + + /* + * Framing error - we throw away the packet completely. + * Clearing RXE flushes the error conditions and data + * from the fifo. + */ + if (Ser2HSSR0 & (HSSR0_FRE | HSSR0_RAB)) { + dev->stats.rx_errors++; + + if (Ser2HSSR0 & HSSR0_FRE) + dev->stats.rx_frame_errors++; + + /* + * Clear out the DMA... + */ + Ser2HSCR0 = si->hscr0 | HSCR0_HSSP; + + /* + * Clear selected status bits now, so we + * don't miss them next time around. + */ + Ser2HSSR0 = HSSR0_FRE | HSSR0_RAB; + } + + /* + * Deal with any receive errors. The any of the lowest + * 8 bytes in the FIFO may contain an error. We must read + * them one by one. The "error" could even be the end of + * packet! + */ + if (Ser2HSSR0 & HSSR0_EIF) + sa1100_irda_fir_error(si, dev); + + /* + * No matter what happens, we must restart reception. + */ + sa1100_irda_rx_dma_start(si); + + return IRQ_HANDLED; +} /* * Set the IrDA communications speed. @@ -306,228 +520,6 @@ sa1100_set_power(struct sa1100_irda *si, unsigned int state) return ret; } -/* - * HP-SIR format interrupt service routines. - */ -static irqreturn_t sa1100_irda_sir_irq(struct net_device *dev, struct sa1100_irda *si) -{ - int status; - - status = Ser2UTSR0; - - /* - * Deal with any receive errors first. The bytes in error may be - * the only bytes in the receive FIFO, so we do this first. - */ - while (status & UTSR0_EIF) { - int stat, data; - - stat = Ser2UTSR1; - data = Ser2UTDR; - - if (stat & (UTSR1_FRE | UTSR1_ROR)) { - dev->stats.rx_errors++; - if (stat & UTSR1_FRE) - dev->stats.rx_frame_errors++; - if (stat & UTSR1_ROR) - dev->stats.rx_fifo_errors++; - } else - async_unwrap_char(dev, &dev->stats, &si->rx_buff, data); - - status = Ser2UTSR0; - } - - /* - * We must clear certain bits. - */ - Ser2UTSR0 = status & (UTSR0_RID | UTSR0_RBB | UTSR0_REB); - - if (status & UTSR0_RFS) { - /* - * There are at least 4 bytes in the FIFO. Read 3 bytes - * and leave the rest to the block below. - */ - async_unwrap_char(dev, &dev->stats, &si->rx_buff, Ser2UTDR); - async_unwrap_char(dev, &dev->stats, &si->rx_buff, Ser2UTDR); - async_unwrap_char(dev, &dev->stats, &si->rx_buff, Ser2UTDR); - } - - if (status & (UTSR0_RFS | UTSR0_RID)) { - /* - * Fifo contains more than 1 character. - */ - do { - async_unwrap_char(dev, &dev->stats, &si->rx_buff, - Ser2UTDR); - } while (Ser2UTSR1 & UTSR1_RNE); - - } - - if (status & UTSR0_TFS && si->tx_buff.len) { - /* - * Transmitter FIFO is not full - */ - do { - Ser2UTDR = *si->tx_buff.data++; - si->tx_buff.len -= 1; - } while (Ser2UTSR1 & UTSR1_TNF && si->tx_buff.len); - - if (si->tx_buff.len == 0) { - dev->stats.tx_packets++; - dev->stats.tx_bytes += si->tx_buff.data - - si->tx_buff.head; - - /* - * We need to ensure that the transmitter has - * finished. - */ - do - rmb(); - while (Ser2UTSR1 & UTSR1_TBY); - - /* - * Ok, we've finished transmitting. Now enable - * the receiver. Sometimes we get a receive IRQ - * immediately after a transmit... - */ - Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID; - Ser2UTCR3 = UTCR3_RIE | UTCR3_RXE | UTCR3_TXE; - - sa1100_irda_check_speed(si); - - /* I'm hungry! */ - netif_wake_queue(dev); - } - } - - return IRQ_HANDLED; -} - -static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev) -{ - struct sk_buff *skb = si->dma_rx.skb; - dma_addr_t dma_addr; - unsigned int len, stat, data; - - if (!skb) { - printk(KERN_ERR "sa1100_ir: SKB is NULL!\n"); - return; - } - - /* - * Get the current data position. - */ - dma_addr = sa1100_get_dma_pos(si->dma_rx.regs); - len = dma_addr - si->dma_rx.dma; - if (len > HPSIR_MAX_RXLEN) - len = HPSIR_MAX_RXLEN; - dma_unmap_single(si->dev, si->dma_rx.dma, len, DMA_FROM_DEVICE); - - do { - /* - * Read Status, and then Data. - */ - stat = Ser2HSSR1; - rmb(); - data = Ser2HSDR; - - if (stat & (HSSR1_CRE | HSSR1_ROR)) { - dev->stats.rx_errors++; - if (stat & HSSR1_CRE) - dev->stats.rx_crc_errors++; - if (stat & HSSR1_ROR) - dev->stats.rx_frame_errors++; - } else - skb->data[len++] = data; - - /* - * If we hit the end of frame, there's - * no point in continuing. - */ - if (stat & HSSR1_EOF) - break; - } while (Ser2HSSR0 & HSSR0_EIF); - - if (stat & HSSR1_EOF) { - si->dma_rx.skb = NULL; - - skb_put(skb, len); - skb->dev = dev; - skb_reset_mac_header(skb); - skb->protocol = htons(ETH_P_IRDA); - dev->stats.rx_packets++; - dev->stats.rx_bytes += len; - - /* - * Before we pass the buffer up, allocate a new one. - */ - sa1100_irda_rx_alloc(si); - - netif_rx(skb); - } else { - /* - * Remap the buffer - it was previously mapped, and we - * hope that this succeeds. - */ - si->dma_rx.dma = dma_map_single(si->dev, si->dma_rx.skb->data, - HPSIR_MAX_RXLEN, - DMA_FROM_DEVICE); - } -} - -/* - * FIR format interrupt service routine. We only have to - * handle RX events; transmit events go via the TX DMA handler. - * - * No matter what, we disable RX, process, and the restart RX. - */ -static irqreturn_t sa1100_irda_fir_irq(struct net_device *dev, struct sa1100_irda *si) -{ - /* - * Stop RX DMA - */ - sa1100_stop_dma(si->dma_rx.regs); - - /* - * Framing error - we throw away the packet completely. - * Clearing RXE flushes the error conditions and data - * from the fifo. - */ - if (Ser2HSSR0 & (HSSR0_FRE | HSSR0_RAB)) { - dev->stats.rx_errors++; - - if (Ser2HSSR0 & HSSR0_FRE) - dev->stats.rx_frame_errors++; - - /* - * Clear out the DMA... - */ - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP; - - /* - * Clear selected status bits now, so we - * don't miss them next time around. - */ - Ser2HSSR0 = HSSR0_FRE | HSSR0_RAB; - } - - /* - * Deal with any receive errors. The any of the lowest - * 8 bytes in the FIFO may contain an error. We must read - * them one by one. The "error" could even be the end of - * packet! - */ - if (Ser2HSSR0 & HSSR0_EIF) - sa1100_irda_fir_error(si, dev); - - /* - * No matter what happens, we must restart reception. - */ - sa1100_irda_rx_dma_start(si); - - return IRQ_HANDLED; -} - static irqreturn_t sa1100_irda_irq(int irq, void *dev_id) { struct net_device *dev = dev_id; From 26f2bee1a3063ddd89f76a75b99adb32636f3513 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 17:48:02 +0000 Subject: [PATCH 053/125] NET: sa11x0-ir: move sa1100_irda_txdma_irq Move the FIR DMA transmit completion function along-side the other FIR protocol functions. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 108 +++++++++++++++++------------------ 1 file changed, 53 insertions(+), 55 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 61b42d1265b..0b5a2e2a7be 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -261,6 +261,57 @@ static irqreturn_t sa1100_irda_sir_irq(struct net_device *dev, struct sa1100_ird /* * FIR format support. */ +static void sa1100_irda_firtxdma_irq(void *id) +{ + struct net_device *dev = id; + struct sa1100_irda *si = netdev_priv(dev); + struct sk_buff *skb; + + /* + * Wait for the transmission to complete. Unfortunately, + * the hardware doesn't give us an interrupt to indicate + * "end of frame". + */ + do + rmb(); + while (!(Ser2HSSR0 & HSSR0_TUR) || Ser2HSSR1 & HSSR1_TBY); + + /* + * Clear the transmit underrun bit. + */ + Ser2HSSR0 = HSSR0_TUR; + + /* + * Do we need to change speed? Note that we're lazy + * here - we don't free the old dma_rx.skb. We don't need + * to allocate a buffer either. + */ + sa1100_irda_check_speed(si); + + /* + * Start reception. This disables the transmitter for + * us. This will be using the existing RX buffer. + */ + sa1100_irda_rx_dma_start(si); + + /* Account and free the packet. */ + skb = si->dma_tx.skb; + if (skb) { + dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, + DMA_TO_DEVICE); + dev->stats.tx_packets ++; + dev->stats.tx_bytes += skb->len; + dev_kfree_skb_irq(skb); + si->dma_tx.skb = NULL; + } + + /* + * Make sure that the TX queue is available for sending + * (for retries). TX has priority over RX at all times. + */ + netif_wake_queue(dev); +} + static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, struct sa1100_irda *si) { @@ -528,60 +579,6 @@ static irqreturn_t sa1100_irda_irq(int irq, void *dev_id) return si->irq(dev, si); } -/* - * TX DMA completion handler. - */ -static void sa1100_irda_txdma_irq(void *id) -{ - struct net_device *dev = id; - struct sa1100_irda *si = netdev_priv(dev); - struct sk_buff *skb; - - /* - * Wait for the transmission to complete. Unfortunately, - * the hardware doesn't give us an interrupt to indicate - * "end of frame". - */ - do - rmb(); - while (!(Ser2HSSR0 & HSSR0_TUR) || Ser2HSSR1 & HSSR1_TBY); - - /* - * Clear the transmit underrun bit. - */ - Ser2HSSR0 = HSSR0_TUR; - - /* - * Do we need to change speed? Note that we're lazy - * here - we don't free the old dma_rx.skb. We don't need - * to allocate a buffer either. - */ - sa1100_irda_check_speed(si); - - /* - * Start reception. This disables the transmitter for - * us. This will be using the existing RX buffer. - */ - sa1100_irda_rx_dma_start(si); - - /* Account and free the packet. */ - skb = si->dma_tx.skb; - if (skb) { - dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, - DMA_TO_DEVICE); - dev->stats.tx_packets ++; - dev->stats.tx_bytes += skb->len; - dev_kfree_skb_irq(skb); - si->dma_tx.skb = NULL; - } - - /* - * Make sure that the TX queue is available for sending - * (for retries). TX has priority over RX at all times. - */ - netif_wake_queue(dev); -} - static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev) { struct sa1100_irda *si = netdev_priv(dev); @@ -730,7 +727,8 @@ static int sa1100_irda_start(struct net_device *dev) goto err_rx_dma; err = sa1100_request_dma(DMA_Ser2HSSPWr, "IrDA transmit", - sa1100_irda_txdma_irq, dev, &si->dma_tx.regs); + sa1100_irda_firtxdma_irq, dev, + &si->dma_tx.regs); if (err) goto err_tx_dma; From 6a7f4911a470fede7d40746487fb1e4a95657efd Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 20:49:28 +0000 Subject: [PATCH 054/125] NET: sa11x0-ir: get rid of si->hscr0 si->hscr0 is initialized to zero, and never changed. Get rid of this redundant variable. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 0b5a2e2a7be..d428dd0a8bc 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -50,7 +50,6 @@ struct sa1100_buf { }; struct sa1100_irda { - unsigned char hscr0; unsigned char utcr4; unsigned char power; unsigned char open; @@ -124,14 +123,14 @@ static void sa1100_irda_rx_dma_start(struct sa1100_irda *si) /* * First empty receive FIFO */ - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP; + Ser2HSCR0 = HSCR0_HSSP; /* * Enable the DMA, receiver and receive interrupt. */ sa1100_clear_dma(si->dma_rx.regs); sa1100_start_dma(si->dma_rx.regs, si->dma_rx.dma, HPSIR_MAX_RXLEN); - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_RXE; + Ser2HSCR0 = HSCR0_HSSP | HSCR0_RXE; } static void sa1100_irda_check_speed(struct sa1100_irda *si) @@ -338,7 +337,7 @@ static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, if (mtt) udelay(mtt); - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_TXE; + Ser2HSCR0 = HSCR0_HSSP | HSCR0_TXE; return NETDEV_TX_OK; } @@ -440,7 +439,7 @@ static irqreturn_t sa1100_irda_fir_irq(struct net_device *dev, struct sa1100_ird /* * Clear out the DMA... */ - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP; + Ser2HSCR0 = HSCR0_HSSP; /* * Clear selected status bits now, so we @@ -513,10 +512,8 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed) case 4000000: local_irq_save(flags); - si->hscr0 = 0; - Ser2HSSR0 = 0xff; - Ser2HSCR0 = si->hscr0 | HSCR0_HSSP; + Ser2HSCR0 = HSCR0_HSSP; Ser2UTCR3 = 0; si->speed = speed; From 32273f50608e9b98116622e32187cbd139c09716 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 12 Jan 2012 12:45:00 +0000 Subject: [PATCH 055/125] NET: sa11x0-ir: convert to use scatterlist DMA API Convert the sa11x0 IrDA driver to use the scatterlist DMA API. This is a preparatory patch for converting the driver to use the DMA engine API, which requires a struct scatterlist for every transfer. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 42 ++++++++++++++++++------------------ 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index d428dd0a8bc..86d296ed69a 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -45,7 +45,7 @@ static int max_rate = 4000000; struct sa1100_buf { struct sk_buff *skb; - dma_addr_t dma; + struct scatterlist sg; dma_regs_t *regs; }; @@ -98,10 +98,8 @@ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) */ skb_reserve(si->dma_rx.skb, 1); - si->dma_rx.dma = dma_map_single(si->dev, si->dma_rx.skb->data, - HPSIR_MAX_RXLEN, - DMA_FROM_DEVICE); - if (dma_mapping_error(si->dev, si->dma_rx.dma)) { + sg_set_buf(&si->dma_rx.sg, si->dma_rx.skb->data, HPSIR_MAX_RXLEN); + if (dma_map_sg(si->dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE) == 0) { dev_kfree_skb_any(si->dma_rx.skb); return -ENOMEM; } @@ -129,7 +127,8 @@ static void sa1100_irda_rx_dma_start(struct sa1100_irda *si) * Enable the DMA, receiver and receive interrupt. */ sa1100_clear_dma(si->dma_rx.regs); - sa1100_start_dma(si->dma_rx.regs, si->dma_rx.dma, HPSIR_MAX_RXLEN); + sa1100_start_dma(si->dma_rx.regs, sg_dma_address(&si->dma_rx.sg), + sg_dma_len(&si->dma_rx.sg)); Ser2HSCR0 = HSCR0_HSSP | HSCR0_RXE; } @@ -296,8 +295,8 @@ static void sa1100_irda_firtxdma_irq(void *id) /* Account and free the packet. */ skb = si->dma_tx.skb; if (skb) { - dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, - DMA_TO_DEVICE); + dma_unmap_sg(si->dev, &si->dma_tx.sg, 1, + DMA_TO_DEVICE); dev->stats.tx_packets ++; dev->stats.tx_bytes += skb->len; dev_kfree_skb_irq(skb); @@ -317,9 +316,8 @@ static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, int mtt = irda_get_mtt(skb); si->dma_tx.skb = skb; - si->dma_tx.dma = dma_map_single(si->dev, skb->data, skb->len, - DMA_TO_DEVICE); - if (dma_mapping_error(si->dev, si->dma_tx.dma)) { + sg_set_buf(&si->dma_tx.sg, skb->data, skb->len); + if (dma_map_sg(si->dev, &si->dma_tx.sg, 1, DMA_TO_DEVICE) == 0) { si->dma_tx.skb = NULL; netif_wake_queue(dev); dev->stats.tx_dropped++; @@ -327,7 +325,8 @@ static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, return NETDEV_TX_OK; } - sa1100_start_dma(si->dma_tx.regs, si->dma_tx.dma, skb->len); + sa1100_start_dma(si->dma_tx.regs, sg_dma_address(&si->dma_tx.sg), + sg_dma_len(&si->dma_tx.sg)); /* * If we have a mean turn-around time, impose the specified @@ -357,10 +356,10 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev * Get the current data position. */ dma_addr = sa1100_get_dma_pos(si->dma_rx.regs); - len = dma_addr - si->dma_rx.dma; + len = dma_addr - sg_dma_address(&si->dma_rx.sg); if (len > HPSIR_MAX_RXLEN) len = HPSIR_MAX_RXLEN; - dma_unmap_single(si->dev, si->dma_rx.dma, len, DMA_FROM_DEVICE); + dma_unmap_sg(si->dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); do { /* @@ -408,9 +407,7 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev * Remap the buffer - it was previously mapped, and we * hope that this succeeds. */ - si->dma_rx.dma = dma_map_single(si->dev, si->dma_rx.skb->data, - HPSIR_MAX_RXLEN, - DMA_FROM_DEVICE); + dma_map_sg(si->dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); } } @@ -786,16 +783,16 @@ static int sa1100_irda_stop(struct net_device *dev) */ skb = si->dma_rx.skb; if (skb) { - dma_unmap_single(si->dev, si->dma_rx.dma, HPSIR_MAX_RXLEN, - DMA_FROM_DEVICE); + dma_unmap_sg(si->dev, &si->dma_rx.sg, 1, + DMA_FROM_DEVICE); dev_kfree_skb(skb); si->dma_rx.skb = NULL; } skb = si->dma_tx.skb; if (skb) { - dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, - DMA_TO_DEVICE); + dma_unmap_sg(si->dev, &si->dma_tx.sg, 1, + DMA_TO_DEVICE); dev_kfree_skb(skb); si->dma_tx.skb = NULL; } @@ -871,6 +868,9 @@ static int sa1100_irda_probe(struct platform_device *pdev) si->dev = &pdev->dev; si->pdata = pdev->dev.platform_data; + sg_init_table(&si->dma_rx.sg, 1); + sg_init_table(&si->dma_tx.sg, 1); + /* * Initialise the HP-SIR buffers */ From 04b7fc4dec4fcb61dbe022bbaffda8ea37c39430 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 12 Jan 2012 13:51:10 +0000 Subject: [PATCH 056/125] NET: sa11x0-ir: fix size of SIR transmit buffer The SIR transmit buffer was being allocated as 4000 bytes. IrDA now has constants for the buffer sizes, and defines the maximum wrapped SIR packet to be 4269 bytes as indicated by IRDA_SIR_MAX_FRAME. Use this definition to allocate the transmit buffer instead. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 86d296ed69a..be67bdc0ca0 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -877,7 +877,7 @@ static int sa1100_irda_probe(struct platform_device *pdev) err = sa1100_irda_init_iobuf(&si->rx_buff, 14384); if (err) goto err_mem_5; - err = sa1100_irda_init_iobuf(&si->tx_buff, 4000); + err = sa1100_irda_init_iobuf(&si->tx_buff, IRDA_SIR_MAX_FRAME); if (err) goto err_mem_5; From 3c500a35544d6270b127bce7d4c5a15ef454b9e2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 12 Jan 2012 13:56:28 +0000 Subject: [PATCH 057/125] NET: sa11x0-ir: split si->dev for IrDA transmit and receive buffers The sa11x0-ir device is not the device which is doing the DMA, the DMA is being performed by a separate DMA engine. Split the struct device associated with each DMA channel from the main struct device, but for the time being initialize it from the main struct device. This is another preparatory step to converting this driver to use the DMA engine API. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index be67bdc0ca0..9c748f38b9d 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -44,6 +44,7 @@ static int tx_lpm; static int max_rate = 4000000; struct sa1100_buf { + struct device *dev; struct sk_buff *skb; struct scatterlist sg; dma_regs_t *regs; @@ -99,7 +100,7 @@ static int sa1100_irda_rx_alloc(struct sa1100_irda *si) skb_reserve(si->dma_rx.skb, 1); sg_set_buf(&si->dma_rx.sg, si->dma_rx.skb->data, HPSIR_MAX_RXLEN); - if (dma_map_sg(si->dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE) == 0) { + if (dma_map_sg(si->dma_rx.dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE) == 0) { dev_kfree_skb_any(si->dma_rx.skb); return -ENOMEM; } @@ -295,7 +296,7 @@ static void sa1100_irda_firtxdma_irq(void *id) /* Account and free the packet. */ skb = si->dma_tx.skb; if (skb) { - dma_unmap_sg(si->dev, &si->dma_tx.sg, 1, + dma_unmap_sg(si->dma_tx.dev, &si->dma_tx.sg, 1, DMA_TO_DEVICE); dev->stats.tx_packets ++; dev->stats.tx_bytes += skb->len; @@ -317,7 +318,7 @@ static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, si->dma_tx.skb = skb; sg_set_buf(&si->dma_tx.sg, skb->data, skb->len); - if (dma_map_sg(si->dev, &si->dma_tx.sg, 1, DMA_TO_DEVICE) == 0) { + if (dma_map_sg(si->dma_tx.dev, &si->dma_tx.sg, 1, DMA_TO_DEVICE) == 0) { si->dma_tx.skb = NULL; netif_wake_queue(dev); dev->stats.tx_dropped++; @@ -359,7 +360,7 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev len = dma_addr - sg_dma_address(&si->dma_rx.sg); if (len > HPSIR_MAX_RXLEN) len = HPSIR_MAX_RXLEN; - dma_unmap_sg(si->dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); + dma_unmap_sg(si->dma_rx.dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); do { /* @@ -407,7 +408,7 @@ static void sa1100_irda_fir_error(struct sa1100_irda *si, struct net_device *dev * Remap the buffer - it was previously mapped, and we * hope that this succeeds. */ - dma_map_sg(si->dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); + dma_map_sg(si->dma_rx.dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); } } @@ -726,6 +727,9 @@ static int sa1100_irda_start(struct net_device *dev) if (err) goto err_tx_dma; + si->dma_rx.dev = si->dev; + si->dma_tx.dev = si->dev; + /* * Setup the serial port for the specified speed. */ @@ -783,7 +787,7 @@ static int sa1100_irda_stop(struct net_device *dev) */ skb = si->dma_rx.skb; if (skb) { - dma_unmap_sg(si->dev, &si->dma_rx.sg, 1, + dma_unmap_sg(si->dma_rx.dev, &si->dma_rx.sg, 1, DMA_FROM_DEVICE); dev_kfree_skb(skb); si->dma_rx.skb = NULL; @@ -791,7 +795,7 @@ static int sa1100_irda_stop(struct net_device *dev) skb = si->dma_tx.skb; if (skb) { - dma_unmap_sg(si->dev, &si->dma_tx.sg, 1, + dma_unmap_sg(si->dma_tx.dev, &si->dma_tx.sg, 1, DMA_TO_DEVICE); dev_kfree_skb(skb); si->dma_tx.skb = NULL; From abe06082d07fcb0673cb93338c1d6f037fdc375b Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 20 Jan 2012 22:13:52 +0000 Subject: [PATCH 058/125] MFD: mcp/ucb1x00: separate ucb1x00 driver data from the MCP data Patch taken from 5dd7bf59e0 (ARM: sa11x0: Implement autoloading of codec and codec pdata for mcp bus.) by Jochen Friedrich . This adds just the codec data part of the patch. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- arch/arm/mach-sa1100/collie.c | 7 ++++++- arch/arm/mach-sa1100/include/mach/mcp.h | 2 +- arch/arm/mach-sa1100/simpad.c | 7 ++++++- drivers/mfd/mcp-core.c | 3 ++- drivers/mfd/mcp-sa11x0.c | 3 +-- drivers/mfd/ucb1x00-core.c | 7 ++++--- include/linux/mfd/mcp.h | 3 +-- include/linux/mfd/ucb1x00.h | 3 +++ 8 files changed, 24 insertions(+), 11 deletions(-) diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c index efa2bc132cb..0e735978515 100644 --- a/arch/arm/mach-sa1100/collie.c +++ b/arch/arm/mach-sa1100/collie.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -85,10 +86,14 @@ static struct scoop_pcmcia_config collie_pcmcia_config = { .num_devs = 1, }; +static struct ucb1x00_plat_data collie_ucb1x00_data = { + .gpio_base = COLLIE_TC35143_GPIO_BASE, +}; + static struct mcp_plat_data collie_mcp_data = { .mccr0 = MCCR0_ADM | MCCR0_ExtClk, .sclk_rate = 9216000, - .gpio_base = COLLIE_TC35143_GPIO_BASE, + .codec_pdata = &collie_ucb1x00_data, }; /* diff --git a/arch/arm/mach-sa1100/include/mach/mcp.h b/arch/arm/mach-sa1100/include/mach/mcp.h index ed1a331508a..4b2860ae382 100644 --- a/arch/arm/mach-sa1100/include/mach/mcp.h +++ b/arch/arm/mach-sa1100/include/mach/mcp.h @@ -16,7 +16,7 @@ struct mcp_plat_data { u32 mccr0; u32 mccr1; unsigned int sclk_rate; - int gpio_base; + void *codec_pdata; }; #endif diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index 3aa36ec2103..81506562ee2 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -187,10 +188,14 @@ static struct resource simpad_flash_resources [] = { } }; +static struct ucb1x00_plat_data simpad_ucb1x00_data = { + .gpio_base = SIMPAD_UCB1X00_GPIO_BASE, +}; + static struct mcp_plat_data simpad_mcp_data = { .mccr0 = MCCR0_ADM, .sclk_rate = 11981000, - .gpio_base = SIMPAD_UCB1X00_GPIO_BASE, + .codec_pdata = &simpad_ucb1x00_data, }; diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c index 280a4f8a787..c409d632714 100644 --- a/drivers/mfd/mcp-core.c +++ b/drivers/mfd/mcp-core.c @@ -217,8 +217,9 @@ struct mcp *mcp_host_alloc(struct device *parent, size_t size) } EXPORT_SYMBOL(mcp_host_alloc); -int mcp_host_add(struct mcp *mcp) +int mcp_host_add(struct mcp *mcp, void *pdata) { + mcp->attached_device.platform_data = pdata; dev_set_name(&mcp->attached_device, "mcp0"); return device_add(&mcp->attached_device); } diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 420710b19f2..960ebc79038 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -194,7 +194,6 @@ static int mcp_sa11x0_probe(struct platform_device *dev) mcp->owner = THIS_MODULE; mcp->ops = &mcp_sa11x0; mcp->sclk_rate = data->sclk_rate; - mcp->gpio_base = data->gpio_base; m = priv(mcp); m->mccr0 = data->mccr0 | 0x7f7f; @@ -229,7 +228,7 @@ static int mcp_sa11x0_probe(struct platform_device *dev) mcp->rw_timeout = (64 * 3 * 1000000 + mcp->sclk_rate - 1) / mcp->sclk_rate; - ret = mcp_host_add(mcp); + ret = mcp_host_add(mcp, data->codec_pdata); if (ret == 0) return 0; diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index f2fb4205467..6825169b06f 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -534,6 +534,7 @@ static int ucb1x00_probe(struct mcp *mcp) { struct ucb1x00 *ucb; struct ucb1x00_driver *drv; + struct ucb1x00_plat_data *pdata; unsigned int id; int ret = -ENODEV; int temp; @@ -551,7 +552,7 @@ static int ucb1x00_probe(struct mcp *mcp) if (!ucb) goto err_disable; - + pdata = mcp->attached_device.platform_data; ucb->dev.class = &ucb1x00_class; ucb->dev.parent = &mcp->attached_device; dev_set_name(&ucb->dev, "ucb1x00"); @@ -570,9 +571,9 @@ static int ucb1x00_probe(struct mcp *mcp) } ucb->gpio.base = -1; - if (mcp->gpio_base != 0) { + if (pdata && pdata->gpio_base) { ucb->gpio.label = dev_name(&ucb->dev); - ucb->gpio.base = mcp->gpio_base; + ucb->gpio.base = pdata->gpio_base; ucb->gpio.ngpio = 10; ucb->gpio.set = ucb1x00_gpio_set; ucb->gpio.get = ucb1x00_gpio_get; diff --git a/include/linux/mfd/mcp.h b/include/linux/mfd/mcp.h index dfe7e517ad9..bfcdf6d3f1b 100644 --- a/include/linux/mfd/mcp.h +++ b/include/linux/mfd/mcp.h @@ -20,7 +20,6 @@ struct mcp { unsigned int sclk_rate; unsigned int rw_timeout; struct device attached_device; - int gpio_base; }; struct mcp_ops { @@ -41,7 +40,7 @@ void mcp_disable(struct mcp *); #define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate) struct mcp *mcp_host_alloc(struct device *, size_t); -int mcp_host_add(struct mcp *); +int mcp_host_add(struct mcp *, void *); void mcp_host_del(struct mcp *); void mcp_host_free(struct mcp *); diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index 4321f044d1e..731b23a656c 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -104,6 +104,9 @@ #define UCB_MODE_DYN_VFLAG_ENA (1 << 12) #define UCB_MODE_AUD_OFF_CAN (1 << 13) +struct ucb1x00_plat_data { + int gpio_base; +}; struct ucb1x00_irq { void *devid; From 945f6310d3cf0523560b33b9ddb3271666141bd5 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 09:30:27 +0000 Subject: [PATCH 059/125] MFD: ucb1x00-ts: provide input layer with device parent Provide the input layer struct device with its parent device, so that the input layer's device appears in the correct place in the device tree. This also allows the input device to be visibily associated with its hardware. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-ts.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/ucb1x00-ts.c b/drivers/mfd/ucb1x00-ts.c index ec6ffb6e287..742d0c7bbbc 100644 --- a/drivers/mfd/ucb1x00-ts.c +++ b/drivers/mfd/ucb1x00-ts.c @@ -363,6 +363,7 @@ static int ucb1x00_ts_add(struct ucb1x00_dev *dev) idev->id.product = ts->ucb->id; idev->open = ucb1x00_ts_open; idev->close = ucb1x00_ts_close; + idev->dev.parent = &ts->ucb->dev; idev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY); idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); From c364ff473a8d31c93da5e21ac5d2789a935c8faf Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 16:41:26 +0000 Subject: [PATCH 060/125] MFD: ucb1x00-core: get rid of mach/hardware.h include Nothing in this driver requires anything from the machine/platform headers, so remove this needless header file. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 6825169b06f..cc1c0dce7bd 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -29,8 +29,6 @@ #include #include -#include - static DEFINE_MUTEX(ucb1x00_mutex); static LIST_HEAD(ucb1x00_drivers); static LIST_HEAD(ucb1x00_devices); From 2f7510c6070932371e0b842a5470ce7190dcf162 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 22 Jan 2012 19:02:25 +0000 Subject: [PATCH 061/125] MFD: ucb1x00-core: add handling for ucb1x00 reset Provide a way to handle the software controlled ucb1x00 reset signal from the ucb1x00-core driver without having to code platform specifics into these drivers. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 17 +++++++++++++---- include/linux/mfd/ucb1x00.h | 7 +++++++ 2 files changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index cc1c0dce7bd..42eee633b86 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -530,13 +530,17 @@ static struct class ucb1x00_class = { static int ucb1x00_probe(struct mcp *mcp) { - struct ucb1x00 *ucb; + struct ucb1x00_plat_data *pdata = mcp->attached_device.platform_data; struct ucb1x00_driver *drv; - struct ucb1x00_plat_data *pdata; + struct ucb1x00 *ucb; unsigned int id; int ret = -ENODEV; int temp; + /* Tell the platform to deassert the UCB1x00 reset */ + if (pdata && pdata->reset) + pdata->reset(UCB_RST_PROBE); + mcp_enable(mcp); id = mcp_reg_read(mcp, UCB_ID); @@ -550,7 +554,6 @@ static int ucb1x00_probe(struct mcp *mcp) if (!ucb) goto err_disable; - pdata = mcp->attached_device.platform_data; ucb->dev.class = &ucb1x00_class; ucb->dev.parent = &mcp->attached_device; dev_set_name(&ucb->dev, "ucb1x00"); @@ -606,7 +609,7 @@ static int ucb1x00_probe(struct mcp *mcp) } mutex_unlock(&ucb1x00_mutex); - goto out; + return ret; err_irq: free_irq(ucb->irq, ucb); @@ -618,11 +621,14 @@ static int ucb1x00_probe(struct mcp *mcp) err_disable: mcp_disable(mcp); out: + if (pdata && pdata->reset) + pdata->reset(UCB_RST_PROBE_FAIL); return ret; } static void ucb1x00_remove(struct mcp *mcp) { + struct ucb1x00_plat_data *pdata = mcp->attached_device.platform_data; struct ucb1x00 *ucb = mcp_get_drvdata(mcp); struct list_head *l, *n; int ret; @@ -643,6 +649,9 @@ static void ucb1x00_remove(struct mcp *mcp) free_irq(ucb->irq, ucb); device_unregister(&ucb->dev); + + if (pdata && pdata->reset) + pdata->reset(UCB_RST_REMOVE); } int ucb1x00_register_driver(struct ucb1x00_driver *drv) diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index 731b23a656c..fd088cc6a4c 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -104,7 +104,14 @@ #define UCB_MODE_DYN_VFLAG_ENA (1 << 12) #define UCB_MODE_AUD_OFF_CAN (1 << 13) +enum ucb1x00_reset { + UCB_RST_PROBE, + UCB_RST_REMOVE, + UCB_RST_PROBE_FAIL, +}; + struct ucb1x00_plat_data { + void (*reset)(enum ucb1x00_reset); int gpio_base; }; From ddb1e04a35846b6c5b6039e92555dafaf6ee03d2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 16:33:38 +0000 Subject: [PATCH 062/125] MFD: ucb1x00-core: add .owner initializer and module alias Add a .owner initializer to the UCB1x00 mcp driver structure, and set an appropriate module alias to identify this driver. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 42eee633b86..c2757c11ce7 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -714,6 +714,7 @@ static int ucb1x00_resume(struct mcp *mcp) static struct mcp_driver ucb1x00_driver = { .drv = { .name = "ucb1x00", + .owner = THIS_MODULE, }, .probe = ucb1x00_probe, .remove = ucb1x00_remove, @@ -757,6 +758,7 @@ EXPORT_SYMBOL(ucb1x00_disable_irq); EXPORT_SYMBOL(ucb1x00_register_driver); EXPORT_SYMBOL(ucb1x00_unregister_driver); +MODULE_ALIAS("mcp:ucb1x00"); MODULE_AUTHOR("Russell King "); MODULE_DESCRIPTION("UCB1x00 core driver"); MODULE_LICENSE("GPL"); From cae154767a96563d33924872aacfdc63d584f707 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 09:33:38 +0000 Subject: [PATCH 063/125] MFD: ucb1x00-core: use mutexes instead of semaphores Convert the ucb1x00 driver to use mutexes rather than the depreciated semaphores for exclusive access to the ADC. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 15 +++++++-------- include/linux/mfd/ucb1x00.h | 4 ++-- 2 files changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index c2757c11ce7..7386f822d4c 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -27,7 +27,6 @@ #include #include #include -#include static DEFINE_MUTEX(ucb1x00_mutex); static LIST_HEAD(ucb1x00_drivers); @@ -99,7 +98,7 @@ void ucb1x00_io_write(struct ucb1x00 *ucb, unsigned int set, unsigned int clear) * ucb1x00_enable must have been called to enable the comms * before using this function. * - * This function does not take any semaphores or spinlocks. + * This function does not take any mutexes or spinlocks. */ unsigned int ucb1x00_io_read(struct ucb1x00 *ucb) { @@ -183,7 +182,7 @@ static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset * Any code wishing to use the ADC converter must call this * function prior to using it. * - * This function takes the ADC semaphore to prevent two or more + * This function takes the ADC mutex to prevent two or more * concurrent uses, and therefore may sleep. As a result, it * can only be called from process context, not interrupt * context. @@ -193,7 +192,7 @@ static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset */ void ucb1x00_adc_enable(struct ucb1x00 *ucb) { - down(&ucb->adc_sem); + mutex_lock(&ucb->adc_mutex); ucb->adc_cr |= UCB_ADC_ENA; @@ -215,7 +214,7 @@ void ucb1x00_adc_enable(struct ucb1x00 *ucb) * complete (2 frames max without sync). * * If called for a synchronised ADC conversion, it may sleep - * with the ADC semaphore held. + * with the ADC mutex held. */ unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync) { @@ -243,7 +242,7 @@ unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync) * ucb1x00_adc_disable - disable the ADC converter * @ucb: UCB1x00 structure describing chip * - * Disable the ADC converter and release the ADC semaphore. + * Disable the ADC converter and release the ADC mutex. */ void ucb1x00_adc_disable(struct ucb1x00 *ucb) { @@ -251,7 +250,7 @@ void ucb1x00_adc_disable(struct ucb1x00 *ucb) ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr); ucb1x00_disable(ucb); - up(&ucb->adc_sem); + mutex_unlock(&ucb->adc_mutex); } /* @@ -560,7 +559,7 @@ static int ucb1x00_probe(struct mcp *mcp) spin_lock_init(&ucb->lock); spin_lock_init(&ucb->io_lock); - sema_init(&ucb->adc_sem, 1); + mutex_init(&ucb->adc_mutex); ucb->id = id; ucb->mcp = mcp; diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index fd088cc6a4c..a4b954381c2 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -12,7 +12,7 @@ #include #include -#include +#include #define UCB_IO_DATA 0x00 #define UCB_IO_DIR 0x01 @@ -124,7 +124,7 @@ struct ucb1x00 { spinlock_t lock; struct mcp *mcp; unsigned int irq; - struct semaphore adc_sem; + struct mutex adc_mutex; spinlock_t io_lock; u16 id; u16 io_dir; From f5ae587f5d258bda9c24bb8387315eb2ebedeee9 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 14:45:17 +0000 Subject: [PATCH 064/125] MFD: ucb1x00-core: clean up device handling in probe Clean up the device handling so we can use the struct device sanely. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 7386f822d4c..74d9fcf891d 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -553,6 +553,7 @@ static int ucb1x00_probe(struct mcp *mcp) if (!ucb) goto err_disable; + device_initialize(&ucb->dev); ucb->dev.class = &ucb1x00_class; ucb->dev.parent = &mcp->attached_device; dev_set_name(&ucb->dev, "ucb1x00"); @@ -563,11 +564,16 @@ static int ucb1x00_probe(struct mcp *mcp) ucb->id = id; ucb->mcp = mcp; + + ret = device_add(&ucb->dev); + if (ret) + goto err_dev_add; + ucb->irq = ucb1x00_detect_irq(ucb); if (ucb->irq == NO_IRQ) { - printk(KERN_ERR "UCB1x00: IRQ probe failed\n"); + dev_err(&ucb->dev, "IRQ probe failed\n"); ret = -ENODEV; - goto err_free; + goto err_no_irq; } ucb->gpio.base = -1; @@ -581,25 +587,20 @@ static int ucb1x00_probe(struct mcp *mcp) ucb->gpio.direction_output = ucb1x00_gpio_direction_output; ret = gpiochip_add(&ucb->gpio); if (ret) - goto err_free; + goto err_gpio_add; } else dev_info(&ucb->dev, "gpio_base not set so no gpiolib support"); ret = request_irq(ucb->irq, ucb1x00_irq, IRQF_TRIGGER_RISING, "UCB1x00", ucb); if (ret) { - printk(KERN_ERR "ucb1x00: unable to grab irq%d: %d\n", + dev_err(&ucb->dev, "ucb1x00: unable to grab irq%d: %d\n", ucb->irq, ret); - goto err_gpio; + goto err_irq; } mcp_set_drvdata(mcp, ucb); - ret = device_register(&ucb->dev); - if (ret) - goto err_irq; - - INIT_LIST_HEAD(&ucb->devs); mutex_lock(&ucb1x00_mutex); list_add(&ucb->node, &ucb1x00_devices); @@ -611,12 +612,13 @@ static int ucb1x00_probe(struct mcp *mcp) return ret; err_irq: - free_irq(ucb->irq, ucb); - err_gpio: if (ucb->gpio.base != -1) temp = gpiochip_remove(&ucb->gpio); - err_free: - kfree(ucb); + err_gpio_add: + err_no_irq: + device_del(&ucb->dev); + err_dev_add: + put_device(&ucb->dev); err_disable: mcp_disable(mcp); out: From 7655b2ac9ed3206fb916357b8b1065f08324507d Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 14:47:00 +0000 Subject: [PATCH 065/125] MFD: ucb1x00-core: add owner and dev initializers to gpio structure Register the gpio device with proper .owner and .dev elements set appropraitely. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 74d9fcf891d..30ef726f4ba 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -579,6 +579,8 @@ static int ucb1x00_probe(struct mcp *mcp) ucb->gpio.base = -1; if (pdata && pdata->gpio_base) { ucb->gpio.label = dev_name(&ucb->dev); + ucb->gpio.dev = &ucb->dev; + ucb->gpio.owner = THIS_MODULE; ucb->gpio.base = pdata->gpio_base; ucb->gpio.ngpio = 10; ucb->gpio.set = ucb1x00_gpio_set; From 65b539bb900f64b9a3f9b761bf0f735dc84e6b70 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 15:35:01 +0000 Subject: [PATCH 066/125] MFD: ucb1x00-core: scan drivers in same order they're registered Cosmetic patch to scan the list of drivers in the order that the drivers are registered, rather than the reverse order. This avoids surprises when drivers get probed in the reverse order, and input devices get registered in a different order due to bind/unbind than from boot. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 30ef726f4ba..162496de1b3 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -436,8 +436,8 @@ static int ucb1x00_add_dev(struct ucb1x00 *ucb, struct ucb1x00_driver *drv) ret = drv->add(dev); if (ret == 0) { - list_add(&dev->dev_node, &ucb->devs); - list_add(&dev->drv_node, &drv->devs); + list_add_tail(&dev->dev_node, &ucb->devs); + list_add_tail(&dev->drv_node, &drv->devs); } else { kfree(dev); } @@ -605,7 +605,7 @@ static int ucb1x00_probe(struct mcp *mcp) INIT_LIST_HEAD(&ucb->devs); mutex_lock(&ucb1x00_mutex); - list_add(&ucb->node, &ucb1x00_devices); + list_add_tail(&ucb->node, &ucb1x00_devices); list_for_each_entry(drv, &ucb1x00_drivers, node) { ucb1x00_add_dev(ucb, drv); } @@ -663,7 +663,7 @@ int ucb1x00_register_driver(struct ucb1x00_driver *drv) INIT_LIST_HEAD(&drv->devs); mutex_lock(&ucb1x00_mutex); - list_add(&drv->node, &ucb1x00_drivers); + list_add_tail(&drv->node, &ucb1x00_drivers); list_for_each_entry(ucb, &ucb1x00_devices, node) { ucb1x00_add_dev(ucb, drv); } From ed442b6798eb39eda3bcea92ef9403280b603818 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 18:13:20 +0000 Subject: [PATCH 067/125] MFD: ucb1x00-core: add missing ucb1x00_enable()/ucb1x00_disable() ucb1x00_enable() and ucb1x00_disable() are used for power saving on the SIB interface, allowing the host supplied clock to be disabled when not required. We require drivers which access the ucb1x00 to ensure that they have enabled the clock prior to accessing the device, and they should disable it once they're done. As we don't expect gpiolib users to be aware of this detail, we must make these calls in the gpiolib interfaces. Add them. Also add them to the resume method, which needs to re-establish the GPIO pin settings. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 162496de1b3..9f8ea52f0ca 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -116,14 +116,22 @@ static void ucb1x00_gpio_set(struct gpio_chip *chip, unsigned offset, int value) else ucb->io_out &= ~(1 << offset); + ucb1x00_enable(ucb); ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out); + ucb1x00_disable(ucb); spin_unlock_irqrestore(&ucb->io_lock, flags); } static int ucb1x00_gpio_get(struct gpio_chip *chip, unsigned offset) { struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio); - return ucb1x00_reg_read(ucb, UCB_IO_DATA) & (1 << offset); + unsigned val; + + ucb1x00_enable(ucb); + val = ucb1x00_reg_read(ucb, UCB_IO_DATA); + ucb1x00_disable(ucb); + + return val & (1 << offset); } static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset) @@ -133,7 +141,9 @@ static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset) spin_lock_irqsave(&ucb->io_lock, flags); ucb->io_dir &= ~(1 << offset); + ucb1x00_enable(ucb); ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir); + ucb1x00_disable(ucb); spin_unlock_irqrestore(&ucb->io_lock, flags); return 0; @@ -153,6 +163,7 @@ static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset else ucb->io_out &= ~mask; + ucb1x00_enable(ucb); if (old != ucb->io_out) ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out); @@ -160,6 +171,7 @@ static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset ucb->io_dir |= mask; ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir); } + ucb1x00_disable(ucb); spin_unlock_irqrestore(&ucb->io_lock, flags); return 0; @@ -703,8 +715,10 @@ static int ucb1x00_resume(struct mcp *mcp) struct ucb1x00 *ucb = mcp_get_drvdata(mcp); struct ucb1x00_dev *dev; + ucb1x00_enable(ucb); ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out); ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir); + ucb1x00_disable(ucb); mutex_lock(&ucb1x00_mutex); list_for_each_entry(dev, &ucb->devs, dev_node) { if (dev->drv->resume) From 2b4d9d2b001be2ff06be2ea5c52e9adaf85b0805 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 18:24:17 +0000 Subject: [PATCH 068/125] MFD: ucb1x00-core: disable mcp clock when bus is not required The ucb1x00-core was leaving the mcp clock enabled indefinitely after probe. This needlessly wastes power. Add the necessary disables to ensure that the clock remains off when we don't need it. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 9f8ea52f0ca..ed2a4b2e518 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -554,16 +554,17 @@ static int ucb1x00_probe(struct mcp *mcp) mcp_enable(mcp); id = mcp_reg_read(mcp, UCB_ID); + mcp_disable(mcp); if (id != UCB_ID_1200 && id != UCB_ID_1300 && id != UCB_ID_TC35143) { printk(KERN_WARNING "UCB1x00 ID not found: %04x\n", id); - goto err_disable; + goto out; } ucb = kzalloc(sizeof(struct ucb1x00), GFP_KERNEL); ret = -ENOMEM; if (!ucb) - goto err_disable; + goto out; device_initialize(&ucb->dev); ucb->dev.class = &ucb1x00_class; @@ -581,7 +582,9 @@ static int ucb1x00_probe(struct mcp *mcp) if (ret) goto err_dev_add; + ucb1x00_enable(ucb); ucb->irq = ucb1x00_detect_irq(ucb); + ucb1x00_disable(ucb); if (ucb->irq == NO_IRQ) { dev_err(&ucb->dev, "IRQ probe failed\n"); ret = -ENODEV; @@ -633,8 +636,6 @@ static int ucb1x00_probe(struct mcp *mcp) device_del(&ucb->dev); err_dev_add: put_device(&ucb->dev); - err_disable: - mcp_disable(mcp); out: if (pdata && pdata->reset) pdata->reset(UCB_RST_PROBE_FAIL); From a4b54acf9e691a3051950444d33980741e7d63a8 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 18:26:17 +0000 Subject: [PATCH 069/125] MFD: mcp-sa11x0: complain if mcp clock is left enabled Issue a warning if the mcp clock was left enabled by some driver when we're suspending or tearing down the core driver for the device. This is an aid for debugging missing disable calls. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-sa11x0.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 960ebc79038..c381436ed3d 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -252,6 +252,10 @@ static int mcp_sa11x0_remove(struct platform_device *dev) struct mcp_sa11x0 *m = priv(mcp); struct resource *mem0, *mem1; + if (m->mccr0 & MCCR0_MCE) + dev_warn(&dev->dev, + "device left active (missing disable call?)\n"); + mem0 = platform_get_resource(dev, IORESOURCE_MEM, 0); mem1 = platform_get_resource(dev, IORESOURCE_MEM, 1); @@ -271,6 +275,9 @@ static int mcp_sa11x0_suspend(struct device *dev) { struct mcp_sa11x0 *m = priv(dev_get_drvdata(dev)); + if (m->mccr0 & MCCR0_MCE) + dev_warn(dev, "device left active (missing disable call?)\n"); + writel(m->mccr0 & ~MCCR0_MCE, MCCR0(m)); return 0; From 5a09b7120a965a7d7e8494d0ed509135bbce0118 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 16:36:30 +0000 Subject: [PATCH 070/125] MFD: ucb1x00-core: convert to use dev_pm_ops Convert the ucb1x00-core driver to use dev_pm_ops rather than the legacy members in the mcp driver. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 32 ++++++++++++++++++-------------- include/linux/mfd/ucb1x00.h | 2 +- 2 files changed, 19 insertions(+), 15 deletions(-) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index ed2a4b2e518..6fab8255754 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -26,6 +26,7 @@ #include #include #include +#include #include static DEFINE_MUTEX(ucb1x00_mutex); @@ -697,47 +698,50 @@ void ucb1x00_unregister_driver(struct ucb1x00_driver *drv) mutex_unlock(&ucb1x00_mutex); } -static int ucb1x00_suspend(struct mcp *mcp, pm_message_t state) +static int ucb1x00_suspend(struct device *dev) { - struct ucb1x00 *ucb = mcp_get_drvdata(mcp); - struct ucb1x00_dev *dev; + struct ucb1x00 *ucb = dev_get_drvdata(dev); + struct ucb1x00_dev *udev; mutex_lock(&ucb1x00_mutex); - list_for_each_entry(dev, &ucb->devs, dev_node) { - if (dev->drv->suspend) - dev->drv->suspend(dev, state); + list_for_each_entry(udev, &ucb->devs, dev_node) { + if (udev->drv->suspend) + udev->drv->suspend(udev); } mutex_unlock(&ucb1x00_mutex); return 0; } -static int ucb1x00_resume(struct mcp *mcp) +static int ucb1x00_resume(struct device *dev) { - struct ucb1x00 *ucb = mcp_get_drvdata(mcp); - struct ucb1x00_dev *dev; + struct ucb1x00 *ucb = dev_get_drvdata(dev); + struct ucb1x00_dev *udev; ucb1x00_enable(ucb); ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out); ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir); ucb1x00_disable(ucb); mutex_lock(&ucb1x00_mutex); - list_for_each_entry(dev, &ucb->devs, dev_node) { - if (dev->drv->resume) - dev->drv->resume(dev); + list_for_each_entry(udev, &ucb->devs, dev_node) { + if (udev->drv->resume) + udev->drv->resume(udev); } mutex_unlock(&ucb1x00_mutex); return 0; } +static const struct dev_pm_ops ucb1x00_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ucb1x00_suspend, ucb1x00_resume) +}; + static struct mcp_driver ucb1x00_driver = { .drv = { .name = "ucb1x00", .owner = THIS_MODULE, + .pm = &ucb1x00_pm_ops, }, .probe = ucb1x00_probe, .remove = ucb1x00_remove, - .suspend = ucb1x00_suspend, - .resume = ucb1x00_resume, }; static int __init ucb1x00_init(void) diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index a4b954381c2..253c12c157a 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -154,7 +154,7 @@ struct ucb1x00_driver { struct list_head devs; int (*add)(struct ucb1x00_dev *dev); void (*remove)(struct ucb1x00_dev *dev); - int (*suspend)(struct ucb1x00_dev *dev, pm_message_t state); + int (*suspend)(struct ucb1x00_dev *dev); int (*resume)(struct ucb1x00_dev *dev); }; From cf4abfcc0df2985ff6061f74e63b8353f2a1d0bc Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 16:38:50 +0000 Subject: [PATCH 071/125] MFD: mcp-core: remove legacy driver suspend/resume methods The legacy driver suspend/resume methods are no longer used, so get rid of them. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/mcp-core.c | 28 ---------------------------- include/linux/mfd/mcp.h | 2 -- 2 files changed, 30 deletions(-) diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c index c409d632714..6acf2e03f2b 100644 --- a/drivers/mfd/mcp-core.c +++ b/drivers/mfd/mcp-core.c @@ -47,39 +47,11 @@ static int mcp_bus_remove(struct device *dev) return 0; } -static int mcp_bus_suspend(struct device *dev, pm_message_t state) -{ - struct mcp *mcp = to_mcp(dev); - int ret = 0; - - if (dev->driver) { - struct mcp_driver *drv = to_mcp_driver(dev->driver); - - ret = drv->suspend(mcp, state); - } - return ret; -} - -static int mcp_bus_resume(struct device *dev) -{ - struct mcp *mcp = to_mcp(dev); - int ret = 0; - - if (dev->driver) { - struct mcp_driver *drv = to_mcp_driver(dev->driver); - - ret = drv->resume(mcp); - } - return ret; -} - static struct bus_type mcp_bus_type = { .name = "mcp", .match = mcp_bus_match, .probe = mcp_bus_probe, .remove = mcp_bus_remove, - .suspend = mcp_bus_suspend, - .resume = mcp_bus_resume, }; /** diff --git a/include/linux/mfd/mcp.h b/include/linux/mfd/mcp.h index bfcdf6d3f1b..a9e8bd15767 100644 --- a/include/linux/mfd/mcp.h +++ b/include/linux/mfd/mcp.h @@ -48,8 +48,6 @@ struct mcp_driver { struct device_driver drv; int (*probe)(struct mcp *); void (*remove)(struct mcp *); - int (*suspend)(struct mcp *, pm_message_t); - int (*resume)(struct mcp *); }; int mcp_driver_register(struct mcp_driver *); From a3364409c4af8bae42d04def48dc11409787e503 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 14:58:28 +0000 Subject: [PATCH 072/125] MFD: ucb1x00: convert to use genirq Convert the ucb1x00 driver to use genirq's interrupt services, rather than its own private implementation. This allows a wider range of drivers to use the GPIO interrupts (such as the gpio_keys driver) without being aware of the UCB1x00's private IRQ system. This prevents the UCB1x00 core driver from being built as a module, so adjust the configuration to add that restriction. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/Kconfig | 5 +- drivers/mfd/ucb1x00-core.c | 257 ++++++++++++++---------------------- drivers/mfd/ucb1x00-ts.c | 37 +++++- include/linux/mfd/ucb1x00.h | 22 +-- 4 files changed, 137 insertions(+), 184 deletions(-) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index cd13e9f2f5e..28a301b2857 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -847,8 +847,9 @@ config MCP_SA11X0 # Chip drivers config MCP_UCB1200 - tristate "Support for UCB1200 / UCB1300" - depends on MCP + bool "Support for UCB1200 / UCB1300" + depends on MCP_SA11X0 + select MCP config MCP_UCB1200_TS tristate "Touchscreen interface support" diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 6fab8255754..400604d3878 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -178,6 +179,13 @@ static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset return 0; } +static int ucb1x00_to_irq(struct gpio_chip *chip, unsigned offset) +{ + struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio); + + return ucb->irq_base > 0 ? ucb->irq_base + offset : -ENXIO; +} + /* * UCB1300 data sheet says we must: * 1. enable ADC => 5us (including reference startup time) @@ -274,10 +282,9 @@ void ucb1x00_adc_disable(struct ucb1x00 *ucb) * SIBCLK to talk to the chip. We leave the clock running until * we have finished processing all interrupts from the chip. */ -static irqreturn_t ucb1x00_irq(int irqnr, void *devid) +static void ucb1x00_irq(unsigned int irq, struct irq_desc *desc) { - struct ucb1x00 *ucb = devid; - struct ucb1x00_irq *irq; + struct ucb1x00 *ucb = irq_desc_get_handler_data(desc); unsigned int isr, i; ucb1x00_enable(ucb); @@ -285,157 +292,84 @@ static irqreturn_t ucb1x00_irq(int irqnr, void *devid) ucb1x00_reg_write(ucb, UCB_IE_CLEAR, isr); ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0); - for (i = 0, irq = ucb->irq_handler; i < 16 && isr; i++, isr >>= 1, irq++) - if (isr & 1 && irq->fn) - irq->fn(i, irq->devid); + for (i = 0; i < 16 && isr; i++, isr >>= 1, irq++) + if (isr & 1) + generic_handle_irq(ucb->irq_base + i); ucb1x00_disable(ucb); - - return IRQ_HANDLED; } -/** - * ucb1x00_hook_irq - hook a UCB1x00 interrupt - * @ucb: UCB1x00 structure describing chip - * @idx: interrupt index - * @fn: function to call when interrupt is triggered - * @devid: device id to pass to interrupt handler - * - * Hook the specified interrupt. You can only register one handler - * for each interrupt source. The interrupt source is not enabled - * by this function; use ucb1x00_enable_irq instead. - * - * Interrupt handlers will be called with other interrupts enabled. - * - * Returns zero on success, or one of the following errors: - * -EINVAL if the interrupt index is invalid - * -EBUSY if the interrupt has already been hooked - */ -int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid) +static void ucb1x00_irq_update(struct ucb1x00 *ucb, unsigned mask) { - struct ucb1x00_irq *irq; - int ret = -EINVAL; - - if (idx < 16) { - irq = ucb->irq_handler + idx; - ret = -EBUSY; - - spin_lock_irq(&ucb->lock); - if (irq->fn == NULL) { - irq->devid = devid; - irq->fn = fn; - ret = 0; - } - spin_unlock_irq(&ucb->lock); - } - return ret; + ucb1x00_enable(ucb); + if (ucb->irq_ris_enbl & mask) + ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl & + ucb->irq_mask); + if (ucb->irq_fal_enbl & mask) + ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl & + ucb->irq_mask); + ucb1x00_disable(ucb); } -/** - * ucb1x00_enable_irq - enable an UCB1x00 interrupt source - * @ucb: UCB1x00 structure describing chip - * @idx: interrupt index - * @edges: interrupt edges to enable - * - * Enable the specified interrupt to trigger on %UCB_RISING, - * %UCB_FALLING or both edges. The interrupt should have been - * hooked by ucb1x00_hook_irq. - */ -void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges) +static void ucb1x00_irq_noop(struct irq_data *data) { - unsigned long flags; - - if (idx < 16) { - spin_lock_irqsave(&ucb->lock, flags); - - ucb1x00_enable(ucb); - if (edges & UCB_RISING) { - ucb->irq_ris_enbl |= 1 << idx; - ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl); - } - if (edges & UCB_FALLING) { - ucb->irq_fal_enbl |= 1 << idx; - ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl); - } - ucb1x00_disable(ucb); - spin_unlock_irqrestore(&ucb->lock, flags); - } } -/** - * ucb1x00_disable_irq - disable an UCB1x00 interrupt source - * @ucb: UCB1x00 structure describing chip - * @edges: interrupt edges to disable - * - * Disable the specified interrupt triggering on the specified - * (%UCB_RISING, %UCB_FALLING or both) edges. - */ -void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges) +static void ucb1x00_irq_mask(struct irq_data *data) { - unsigned long flags; + struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data); + unsigned mask = 1 << (data->irq - ucb->irq_base); - if (idx < 16) { - spin_lock_irqsave(&ucb->lock, flags); - - ucb1x00_enable(ucb); - if (edges & UCB_RISING) { - ucb->irq_ris_enbl &= ~(1 << idx); - ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl); - } - if (edges & UCB_FALLING) { - ucb->irq_fal_enbl &= ~(1 << idx); - ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl); - } - ucb1x00_disable(ucb); - spin_unlock_irqrestore(&ucb->lock, flags); - } + raw_spin_lock(&ucb->irq_lock); + ucb->irq_mask &= ~mask; + ucb1x00_irq_update(ucb, mask); + raw_spin_unlock(&ucb->irq_lock); } -/** - * ucb1x00_free_irq - disable and free the specified UCB1x00 interrupt - * @ucb: UCB1x00 structure describing chip - * @idx: interrupt index - * @devid: device id. - * - * Disable the interrupt source and remove the handler. devid must - * match the devid passed when hooking the interrupt. - * - * Returns zero on success, or one of the following errors: - * -EINVAL if the interrupt index is invalid - * -ENOENT if devid does not match - */ -int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid) +static void ucb1x00_irq_unmask(struct irq_data *data) { - struct ucb1x00_irq *irq; - int ret; + struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data); + unsigned mask = 1 << (data->irq - ucb->irq_base); - if (idx >= 16) - goto bad; - - irq = ucb->irq_handler + idx; - ret = -ENOENT; - - spin_lock_irq(&ucb->lock); - if (irq->devid == devid) { - ucb->irq_ris_enbl &= ~(1 << idx); - ucb->irq_fal_enbl &= ~(1 << idx); - - ucb1x00_enable(ucb); - ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl); - ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl); - ucb1x00_disable(ucb); - - irq->fn = NULL; - irq->devid = NULL; - ret = 0; - } - spin_unlock_irq(&ucb->lock); - return ret; - -bad: - printk(KERN_ERR "Freeing bad UCB1x00 irq %d\n", idx); - return -EINVAL; + raw_spin_lock(&ucb->irq_lock); + ucb->irq_mask |= mask; + ucb1x00_irq_update(ucb, mask); + raw_spin_unlock(&ucb->irq_lock); } +static int ucb1x00_irq_set_type(struct irq_data *data, unsigned int type) +{ + struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data); + unsigned mask = 1 << (data->irq - ucb->irq_base); + + raw_spin_lock(&ucb->irq_lock); + if (type & IRQ_TYPE_EDGE_RISING) + ucb->irq_ris_enbl |= mask; + else + ucb->irq_ris_enbl &= ~mask; + + if (type & IRQ_TYPE_EDGE_FALLING) + ucb->irq_fal_enbl |= mask; + else + ucb->irq_fal_enbl &= ~mask; + if (ucb->irq_mask & mask) { + ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl & + ucb->irq_mask); + ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl & + ucb->irq_mask); + } + raw_spin_unlock(&ucb->irq_lock); + + return 0; +} + +static struct irq_chip ucb1x00_irqchip = { + .name = "ucb1x00", + .irq_ack = ucb1x00_irq_noop, + .irq_mask = ucb1x00_irq_mask, + .irq_unmask = ucb1x00_irq_unmask, + .irq_set_type = ucb1x00_irq_set_type, +}; + static int ucb1x00_add_dev(struct ucb1x00 *ucb, struct ucb1x00_driver *drv) { struct ucb1x00_dev *dev; @@ -545,9 +479,8 @@ static int ucb1x00_probe(struct mcp *mcp) struct ucb1x00_plat_data *pdata = mcp->attached_device.platform_data; struct ucb1x00_driver *drv; struct ucb1x00 *ucb; - unsigned int id; + unsigned id, i, irq_base; int ret = -ENODEV; - int temp; /* Tell the platform to deassert the UCB1x00 reset */ if (pdata && pdata->reset) @@ -572,7 +505,7 @@ static int ucb1x00_probe(struct mcp *mcp) ucb->dev.parent = &mcp->attached_device; dev_set_name(&ucb->dev, "ucb1x00"); - spin_lock_init(&ucb->lock); + raw_spin_lock_init(&ucb->irq_lock); spin_lock_init(&ucb->io_lock); mutex_init(&ucb->adc_mutex); @@ -593,6 +526,26 @@ static int ucb1x00_probe(struct mcp *mcp) } ucb->gpio.base = -1; + irq_base = pdata ? pdata->irq_base : 0; + ucb->irq_base = irq_alloc_descs(-1, irq_base, 16, -1); + if (ucb->irq_base < 0) { + dev_err(&ucb->dev, "unable to allocate 16 irqs: %d\n", + ucb->irq_base); + goto err_irq_alloc; + } + + for (i = 0; i < 16; i++) { + unsigned irq = ucb->irq_base + i; + + irq_set_chip_and_handler(irq, &ucb1x00_irqchip, handle_edge_irq); + irq_set_chip_data(irq, ucb); + set_irq_flags(irq, IRQF_VALID | IRQ_NOREQUEST); + } + + irq_set_irq_type(ucb->irq, IRQ_TYPE_EDGE_RISING); + irq_set_handler_data(ucb->irq, ucb); + irq_set_chained_handler(ucb->irq, ucb1x00_irq); + if (pdata && pdata->gpio_base) { ucb->gpio.label = dev_name(&ucb->dev); ucb->gpio.dev = &ucb->dev; @@ -603,20 +556,13 @@ static int ucb1x00_probe(struct mcp *mcp) ucb->gpio.get = ucb1x00_gpio_get; ucb->gpio.direction_input = ucb1x00_gpio_direction_input; ucb->gpio.direction_output = ucb1x00_gpio_direction_output; + ucb->gpio.to_irq = ucb1x00_to_irq; ret = gpiochip_add(&ucb->gpio); if (ret) goto err_gpio_add; } else dev_info(&ucb->dev, "gpio_base not set so no gpiolib support"); - ret = request_irq(ucb->irq, ucb1x00_irq, IRQF_TRIGGER_RISING, - "UCB1x00", ucb); - if (ret) { - dev_err(&ucb->dev, "ucb1x00: unable to grab irq%d: %d\n", - ucb->irq, ret); - goto err_irq; - } - mcp_set_drvdata(mcp, ucb); INIT_LIST_HEAD(&ucb->devs); @@ -629,10 +575,11 @@ static int ucb1x00_probe(struct mcp *mcp) return ret; - err_irq: - if (ucb->gpio.base != -1) - temp = gpiochip_remove(&ucb->gpio); err_gpio_add: + irq_set_chained_handler(ucb->irq, NULL); + err_irq_alloc: + if (ucb->irq_base > 0) + irq_free_descs(ucb->irq_base, 16); err_no_irq: device_del(&ucb->dev); err_dev_add: @@ -664,7 +611,8 @@ static void ucb1x00_remove(struct mcp *mcp) dev_err(&ucb->dev, "Can't remove gpio chip: %d\n", ret); } - free_irq(ucb->irq, ucb); + irq_set_chained_handler(ucb->irq, NULL); + irq_free_descs(ucb->irq_base, 16); device_unregister(&ucb->dev); if (pdata && pdata->reset) @@ -772,11 +720,6 @@ EXPORT_SYMBOL(ucb1x00_adc_enable); EXPORT_SYMBOL(ucb1x00_adc_read); EXPORT_SYMBOL(ucb1x00_adc_disable); -EXPORT_SYMBOL(ucb1x00_hook_irq); -EXPORT_SYMBOL(ucb1x00_free_irq); -EXPORT_SYMBOL(ucb1x00_enable_irq); -EXPORT_SYMBOL(ucb1x00_disable_irq); - EXPORT_SYMBOL(ucb1x00_register_driver); EXPORT_SYMBOL(ucb1x00_unregister_driver); diff --git a/drivers/mfd/ucb1x00-ts.c b/drivers/mfd/ucb1x00-ts.c index 742d0c7bbbc..1e0e20c0e08 100644 --- a/drivers/mfd/ucb1x00-ts.c +++ b/drivers/mfd/ucb1x00-ts.c @@ -20,8 +20,9 @@ #include #include #include -#include +#include #include +#include #include #include #include @@ -41,6 +42,8 @@ struct ucb1x00_ts { struct input_dev *idev; struct ucb1x00 *ucb; + spinlock_t irq_lock; + unsigned irq_disabled; wait_queue_head_t irq_wait; struct task_struct *rtask; u16 x_res; @@ -237,7 +240,12 @@ static int ucb1x00_thread(void *_ts) if (ucb1x00_ts_pen_down(ts)) { set_current_state(TASK_INTERRUPTIBLE); - ucb1x00_enable_irq(ts->ucb, UCB_IRQ_TSPX, machine_is_collie() ? UCB_RISING : UCB_FALLING); + spin_lock_irq(&ts->irq_lock); + if (ts->irq_disabled) { + ts->irq_disabled = 0; + enable_irq(ts->ucb->irq_base + UCB_IRQ_TSPX); + } + spin_unlock_irq(&ts->irq_lock); ucb1x00_disable(ts->ucb); /* @@ -280,23 +288,37 @@ static int ucb1x00_thread(void *_ts) * We only detect touch screen _touches_ with this interrupt * handler, and even then we just schedule our task. */ -static void ucb1x00_ts_irq(int idx, void *id) +static irqreturn_t ucb1x00_ts_irq(int irq, void *id) { struct ucb1x00_ts *ts = id; - ucb1x00_disable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_FALLING); + spin_lock(&ts->irq_lock); + ts->irq_disabled = 1; + disable_irq_nosync(ts->ucb->irq_base + UCB_IRQ_TSPX); + spin_unlock(&ts->irq_lock); wake_up(&ts->irq_wait); + + return IRQ_HANDLED; } static int ucb1x00_ts_open(struct input_dev *idev) { struct ucb1x00_ts *ts = input_get_drvdata(idev); + unsigned long flags = 0; int ret = 0; BUG_ON(ts->rtask); + if (machine_is_collie()) + flags = IRQF_TRIGGER_RISING; + else + flags = IRQF_TRIGGER_FALLING; + + ts->irq_disabled = 0; + init_waitqueue_head(&ts->irq_wait); - ret = ucb1x00_hook_irq(ts->ucb, UCB_IRQ_TSPX, ucb1x00_ts_irq, ts); + ret = request_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ucb1x00_ts_irq, + flags, "ucb1x00-ts", ts); if (ret < 0) goto out; @@ -313,7 +335,7 @@ static int ucb1x00_ts_open(struct input_dev *idev) if (!IS_ERR(ts->rtask)) { ret = 0; } else { - ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts); + free_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ts); ts->rtask = NULL; ret = -EFAULT; } @@ -333,7 +355,7 @@ static void ucb1x00_ts_close(struct input_dev *idev) kthread_stop(ts->rtask); ucb1x00_enable(ts->ucb); - ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts); + free_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ts); ucb1x00_reg_write(ts->ucb, UCB_TS_CR, 0); ucb1x00_disable(ts->ucb); } @@ -358,6 +380,7 @@ static int ucb1x00_ts_add(struct ucb1x00_dev *dev) ts->ucb = dev->ucb; ts->idev = idev; ts->adcsync = adcsync ? UCB_SYNC : UCB_NOSYNC; + spin_lock_init(&ts->irq_lock); idev->name = "Touchscreen panel"; idev->id.product = ts->ucb->id; diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index 253c12c157a..6fb907446c3 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -112,18 +112,15 @@ enum ucb1x00_reset { struct ucb1x00_plat_data { void (*reset)(enum ucb1x00_reset); + unsigned irq_base; int gpio_base; }; -struct ucb1x00_irq { - void *devid; - void (*fn)(int, void *); -}; - struct ucb1x00 { - spinlock_t lock; + raw_spinlock_t irq_lock; struct mcp *mcp; unsigned int irq; + int irq_base; struct mutex adc_mutex; spinlock_t io_lock; u16 id; @@ -132,7 +129,7 @@ struct ucb1x00 { u16 adc_cr; u16 irq_fal_enbl; u16 irq_ris_enbl; - struct ucb1x00_irq irq_handler[16]; + u16 irq_mask; struct device dev; struct list_head node; struct list_head devs; @@ -255,15 +252,4 @@ unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync); void ucb1x00_adc_enable(struct ucb1x00 *ucb); void ucb1x00_adc_disable(struct ucb1x00 *ucb); -/* - * Which edges of the IRQ do you want to control today? - */ -#define UCB_RISING (1 << 0) -#define UCB_FALLING (1 << 1) - -int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid); -void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges); -void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges); -int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid); - #endif From 33237616771bfc29a97f17e74efe3799bb790343 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 22 Jan 2012 20:05:24 +0000 Subject: [PATCH 073/125] MFD: ucb1x00-core: add wakeup support Add genirq wakeup support for the ucb1x00 device. This allows an attached gpio_keys driver to wakeup the system. Touchscreen is also possible. When there are no wakeup sources, ask the platform to assert the reset signal to avoid any unexpected behaviour; this also puts the reset signal at the right level when power is removed from the device. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-core.c | 59 +++++++++++++++++++++++++++++++++++++ include/linux/mfd/ucb1x00.h | 4 +++ 2 files changed, 63 insertions(+) diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c index 400604d3878..70f02daeb22 100644 --- a/drivers/mfd/ucb1x00-core.c +++ b/drivers/mfd/ucb1x00-core.c @@ -362,12 +362,32 @@ static int ucb1x00_irq_set_type(struct irq_data *data, unsigned int type) return 0; } +static int ucb1x00_irq_set_wake(struct irq_data *data, unsigned int on) +{ + struct ucb1x00 *ucb = irq_data_get_irq_chip_data(data); + struct ucb1x00_plat_data *pdata = ucb->mcp->attached_device.platform_data; + unsigned mask = 1 << (data->irq - ucb->irq_base); + + if (!pdata || !pdata->can_wakeup) + return -EINVAL; + + raw_spin_lock(&ucb->irq_lock); + if (on) + ucb->irq_wake |= mask; + else + ucb->irq_wake &= ~mask; + raw_spin_unlock(&ucb->irq_lock); + + return 0; +} + static struct irq_chip ucb1x00_irqchip = { .name = "ucb1x00", .irq_ack = ucb1x00_irq_noop, .irq_mask = ucb1x00_irq_mask, .irq_unmask = ucb1x00_irq_unmask, .irq_set_type = ucb1x00_irq_set_type, + .irq_set_wake = ucb1x00_irq_set_wake, }; static int ucb1x00_add_dev(struct ucb1x00 *ucb, struct ucb1x00_driver *drv) @@ -565,6 +585,9 @@ static int ucb1x00_probe(struct mcp *mcp) mcp_set_drvdata(mcp, ucb); + if (pdata) + device_set_wakeup_capable(&ucb->dev, pdata->can_wakeup); + INIT_LIST_HEAD(&ucb->devs); mutex_lock(&ucb1x00_mutex); list_add_tail(&ucb->node, &ucb1x00_devices); @@ -648,6 +671,7 @@ void ucb1x00_unregister_driver(struct ucb1x00_driver *drv) static int ucb1x00_suspend(struct device *dev) { + struct ucb1x00_plat_data *pdata = dev->platform_data; struct ucb1x00 *ucb = dev_get_drvdata(dev); struct ucb1x00_dev *udev; @@ -657,18 +681,53 @@ static int ucb1x00_suspend(struct device *dev) udev->drv->suspend(udev); } mutex_unlock(&ucb1x00_mutex); + + if (ucb->irq_wake) { + unsigned long flags; + + raw_spin_lock_irqsave(&ucb->irq_lock, flags); + ucb1x00_enable(ucb); + ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl & + ucb->irq_wake); + ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl & + ucb->irq_wake); + ucb1x00_disable(ucb); + raw_spin_unlock_irqrestore(&ucb->irq_lock, flags); + + enable_irq_wake(ucb->irq); + } else if (pdata && pdata->reset) + pdata->reset(UCB_RST_SUSPEND); + return 0; } static int ucb1x00_resume(struct device *dev) { + struct ucb1x00_plat_data *pdata = dev->platform_data; struct ucb1x00 *ucb = dev_get_drvdata(dev); struct ucb1x00_dev *udev; + if (!ucb->irq_wake && pdata && pdata->reset) + pdata->reset(UCB_RST_RESUME); + ucb1x00_enable(ucb); ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out); ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir); + + if (ucb->irq_wake) { + unsigned long flags; + + raw_spin_lock_irqsave(&ucb->irq_lock, flags); + ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl & + ucb->irq_mask); + ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl & + ucb->irq_mask); + raw_spin_unlock_irqrestore(&ucb->irq_lock, flags); + + disable_irq_wake(ucb->irq); + } ucb1x00_disable(ucb); + mutex_lock(&ucb1x00_mutex); list_for_each_entry(udev, &ucb->devs, dev_node) { if (udev->drv->resume) diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index 6fb907446c3..28af4175636 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -106,6 +106,8 @@ enum ucb1x00_reset { UCB_RST_PROBE, + UCB_RST_RESUME, + UCB_RST_SUSPEND, UCB_RST_REMOVE, UCB_RST_PROBE_FAIL, }; @@ -114,6 +116,7 @@ struct ucb1x00_plat_data { void (*reset)(enum ucb1x00_reset); unsigned irq_base; int gpio_base; + unsigned can_wakeup; }; struct ucb1x00 { @@ -130,6 +133,7 @@ struct ucb1x00 { u16 irq_fal_enbl; u16 irq_ris_enbl; u16 irq_mask; + u16 irq_wake; struct device dev; struct list_head node; struct list_head devs; From 69dde86aa616b09bb3ef39a5ab783f82254d241c Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 20 Jan 2012 22:18:06 +0000 Subject: [PATCH 074/125] ARM: sa11x0: add assabet ucb1x00 platform data Add ucb1x00 platform data to enable GPIO support on the UCB1300 device. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 3a191456837..c45402f866c 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -199,9 +200,14 @@ static struct irda_platform_data assabet_irda_data = { .set_speed = assabet_irda_set_speed, }; +static struct ucb1x00_plat_data assabet_ucb1x00_data = { + .gpio_base = -1, +}; + static struct mcp_plat_data assabet_mcp_data = { .mccr0 = MCCR0_ADM, .sclk_rate = 11981000, + .codec_pdata = &assabet_ucb1x00_data, }; static void __init assabet_init(void) From 54292a4649a5dd93562d10f188a8e201afebfe2f Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 21 Jan 2012 15:53:42 +0000 Subject: [PATCH 075/125] MFD: ucb1x00-assabet: add support for UCB1x00 GPIO switches Add support for UCB1x00 GPIO buttons found on the Assabet platform. We can now trivially support these buttons as we have standardized gpiolib, genirq and gpio keyboard support in place for this device. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- drivers/mfd/ucb1x00-assabet.c | 45 +++++++++++++++++++++++++++++++---- 1 file changed, 40 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c index b7be613cb50..b63c0756a66 100644 --- a/drivers/mfd/ucb1x00-assabet.c +++ b/drivers/mfd/ucb1x00-assabet.c @@ -11,9 +11,13 @@ */ #include #include -#include -#include #include +#include +#include +#include +#include +#include +#include #include #define UCB1X00_ATTR(name,input)\ @@ -35,14 +39,45 @@ UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2); static int ucb1x00_assabet_add(struct ucb1x00_dev *dev) { - device_create_file(&dev->ucb->dev, &dev_attr_vbatt); - device_create_file(&dev->ucb->dev, &dev_attr_vcharger); - device_create_file(&dev->ucb->dev, &dev_attr_batt_temp); + struct ucb1x00 *ucb = dev->ucb; + struct platform_device *pdev; + struct gpio_keys_platform_data keys; + static struct gpio_keys_button buttons[6]; + unsigned i; + + memset(buttons, 0, sizeof(buttons)); + memset(&keys, 0, sizeof(keys)); + + for (i = 0; i < ARRAY_SIZE(buttons); i++) { + buttons[i].code = BTN_0 + i; + buttons[i].gpio = ucb->gpio.base + i; + buttons[i].type = EV_KEY; + buttons[i].can_disable = true; + } + + keys.buttons = buttons; + keys.nbuttons = ARRAY_SIZE(buttons); + keys.poll_interval = 50; + keys.name = "ucb1x00"; + + pdev = platform_device_register_data(&ucb->dev, "gpio-keys", -1, + &keys, sizeof(keys)); + + device_create_file(&ucb->dev, &dev_attr_vbatt); + device_create_file(&ucb->dev, &dev_attr_vcharger); + device_create_file(&ucb->dev, &dev_attr_batt_temp); + + dev->priv = pdev; return 0; } static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev) { + struct platform_device *pdev = dev->priv; + + if (!IS_ERR(pdev)) + platform_device_unregister(pdev); + device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp); device_remove_file(&dev->ucb->dev, &dev_attr_vcharger); device_remove_file(&dev->ucb->dev, &dev_attr_vbatt); From 6ed3e2acc7995625625592abe8cd3383c34a471b Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 22 Jan 2012 19:23:33 +0000 Subject: [PATCH 076/125] MFD: mcp-sa11x0/assabet: move assabet reset handling out of mcp-sa11x0.c Move the assabet specific reset handling out of mcp-sa11x0.c, into its board file. This leaves the mcp code free from all board specific details. Acked-by: Jochen Friedrich Signed-off-by: Russell King --- arch/arm/mach-sa1100/assabet.c | 8 ++++++++ drivers/mfd/mcp-sa11x0.c | 6 ------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index c45402f866c..b5955ad3594 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -70,6 +70,13 @@ void ASSABET_BCR_frob(unsigned int mask, unsigned int val) EXPORT_SYMBOL(ASSABET_BCR_frob); +static void assabet_ucb1x00_reset(enum ucb1x00_reset state) +{ + if (state == UCB_RST_PROBE) + ASSABET_BCR_set(ASSABET_BCR_CODEC_RST); +} + + static void assabet_backlight_power(int on) { #ifndef ASSABET_PAL_VIDEO @@ -201,6 +208,7 @@ static struct irda_platform_data assabet_irda_data = { }; static struct ucb1x00_plat_data assabet_ucb1x00_data = { + .reset = assabet_ucb1x00_reset, .gpio_base = -1, }; diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index c381436ed3d..1c0ceacaa1f 100644 --- a/drivers/mfd/mcp-sa11x0.c +++ b/drivers/mfd/mcp-sa11x0.c @@ -27,8 +27,6 @@ #include #include -#include - #define DRIVER_NAME "sa11x0-mcp" struct mcp_sa11x0 { @@ -208,10 +206,6 @@ static int mcp_sa11x0_probe(struct platform_device *dev) platform_set_drvdata(dev, mcp); - if (machine_is_assabet()) { - ASSABET_BCR_set(ASSABET_BCR_CODEC_RST); - } - /* * Initialise device. Note that we initially * set the sampling rate to minimum. From 66564d832f531c6336d6d06b6976e16b249aa532 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 10:00:38 +0000 Subject: [PATCH 077/125] FB: sa1100: avoid section mismatch warnings WARNING: drivers/video/built-in.o(.devinit.text+0x58): Section mismatch in reference from the function sa1100fb_probe() to the function .init.text:sa1100fb_init_fbinfo() The function __devinit sa1100fb_probe() references a function __init sa1100fb_init_fbinfo(). If sa1100fb_init_fbinfo is only used by sa1100fb_probe then annotate sa1100fb_init_fbinfo with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x258): Section mismatch in reference from the function sa1100fb_init_fbinfo() to the (unknown reference) .init.data:(unknown) The function __devinit sa1100fb_init_fbinfo() references a (unknown reference) __initdata (unknown). If (unknown) is only used by sa1100fb_init_fbinfo then annotate (unknown) with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x26c): Section mismatch in reference from the function sa1100fb_init_fbinfo() to the (unknown reference) .init.data:(unknown) The function __devinit sa1100fb_init_fbinfo() references a (unknown reference) __initdata (unknown). If (unknown) is only used by sa1100fb_init_fbinfo then annotate (unknown) with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x270): Section mismatch in reference from the function sa1100fb_init_fbinfo() to the (unknown reference) .init.data:(unknown) The function __devinit sa1100fb_init_fbinfo() references a (unknown reference) __initdata (unknown). If (unknown) is only used by sa1100fb_init_fbinfo then annotate (unknown) with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x278): Section mismatch in reference from the function sa1100fb_init_fbinfo() to the (unknown reference) .init.data:(unknown) The function __devinit sa1100fb_init_fbinfo() references a (unknown reference) __initdata (unknown). If (unknown) is only used by sa1100fb_init_fbinfo then annotate (unknown) with a matching annotation. Acked-by: Florian Tobias Schandinat Signed-off-by: Russell King --- drivers/video/sa1100fb.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c index 98d55d0e2da..2cc268c0e89 100644 --- a/drivers/video/sa1100fb.c +++ b/drivers/video/sa1100fb.c @@ -227,7 +227,7 @@ static struct sa1100fb_rgb def_rgb_16 = { * takes an RGB666 signal, but we provide it with an RGB565 signal * instead (def_rgb_16). */ -static struct sa1100fb_mach_info lq039q2ds54_info __initdata = { +static struct sa1100fb_mach_info lq039q2ds54_info __devinitdata = { .pixclock = 171521, .bpp = 16, .xres = 320, .yres = 240, @@ -241,7 +241,7 @@ static struct sa1100fb_mach_info lq039q2ds54_info __initdata = { .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), }; #else -static struct sa1100fb_mach_info pal_info __initdata = { +static struct sa1100fb_mach_info pal_info __devinitdata = { .pixclock = 67797, .bpp = 16, .xres = 640, .yres = 512, @@ -256,7 +256,7 @@ static struct sa1100fb_mach_info pal_info __initdata = { #endif #ifdef CONFIG_SA1100_H3600 -static struct sa1100fb_mach_info h3600_info __initdata = { +static struct sa1100fb_mach_info h3600_info __devinitdata = { .pixclock = 174757, .bpp = 16, .xres = 320, .yres = 240, @@ -279,7 +279,7 @@ static struct sa1100fb_rgb h3600_rgb_16 = { #endif #ifdef CONFIG_SA1100_H3100 -static struct sa1100fb_mach_info h3100_info __initdata = { +static struct sa1100fb_mach_info h3100_info __devinitdata = { .pixclock = 406977, .bpp = 4, .xres = 320, .yres = 240, @@ -297,7 +297,7 @@ static struct sa1100fb_mach_info h3100_info __initdata = { #endif #ifdef CONFIG_SA1100_COLLIE -static struct sa1100fb_mach_info collie_info __initdata = { +static struct sa1100fb_mach_info collie_info __devinitdata = { .pixclock = 171521, .bpp = 16, .xres = 320, .yres = 240, @@ -313,7 +313,7 @@ static struct sa1100fb_mach_info collie_info __initdata = { #endif #ifdef LART_GREY_LCD -static struct sa1100fb_mach_info lart_grey_info __initdata = { +static struct sa1100fb_mach_info lart_grey_info __devinitdata = { .pixclock = 150000, .bpp = 4, .xres = 320, .yres = 240, @@ -329,7 +329,7 @@ static struct sa1100fb_mach_info lart_grey_info __initdata = { }; #endif #ifdef LART_COLOR_LCD -static struct sa1100fb_mach_info lart_color_info __initdata = { +static struct sa1100fb_mach_info lart_color_info __devinitdata = { .pixclock = 150000, .bpp = 16, .xres = 320, .yres = 240, @@ -342,7 +342,7 @@ static struct sa1100fb_mach_info lart_color_info __initdata = { }; #endif #ifdef LART_VIDEO_OUT -static struct sa1100fb_mach_info lart_video_info __initdata = { +static struct sa1100fb_mach_info lart_video_info __devinitdata = { .pixclock = 39721, .bpp = 16, .xres = 640, .yres = 480, @@ -358,7 +358,7 @@ static struct sa1100fb_mach_info lart_video_info __initdata = { #endif #ifdef LART_KIT01_LCD -static struct sa1100fb_mach_info lart_kit01_info __initdata = { +static struct sa1100fb_mach_info lart_kit01_info __devinitdata = { .pixclock = 63291, .bpp = 16, .xres = 640, .yres = 480, @@ -372,7 +372,7 @@ static struct sa1100fb_mach_info lart_kit01_info __initdata = { #endif #ifdef CONFIG_SA1100_SHANNON -static struct sa1100fb_mach_info shannon_info __initdata = { +static struct sa1100fb_mach_info shannon_info __devinitdata = { .pixclock = 152500, .bpp = 8, .xres = 640, .yres = 480, @@ -389,7 +389,7 @@ static struct sa1100fb_mach_info shannon_info __initdata = { -static struct sa1100fb_mach_info * __init +static struct sa1100fb_mach_info * __devinit sa1100fb_get_machine_info(struct sa1100fb_info *fbi) { struct sa1100fb_mach_info *inf = NULL; @@ -1318,7 +1318,7 @@ static int sa1100fb_resume(struct platform_device *dev) * cache. Once this area is remapped, all virtual memory * access to the video memory should occur at the new region. */ -static int __init sa1100fb_map_video_memory(struct sa1100fb_info *fbi) +static int __devinit sa1100fb_map_video_memory(struct sa1100fb_info *fbi) { /* * We reserve one page for the palette, plus the size @@ -1344,7 +1344,7 @@ static int __init sa1100fb_map_video_memory(struct sa1100fb_info *fbi) } /* Fake monspecs to fill in fbinfo structure */ -static struct fb_monspecs monspecs __initdata = { +static struct fb_monspecs monspecs __devinitdata = { .hfmin = 30000, .hfmax = 70000, .vfmin = 50, @@ -1352,7 +1352,7 @@ static struct fb_monspecs monspecs __initdata = { }; -static struct sa1100fb_info * __init sa1100fb_init_fbinfo(struct device *dev) +static struct sa1100fb_info * __devinit sa1100fb_init_fbinfo(struct device *dev) { struct sa1100fb_mach_info *inf; struct sa1100fb_info *fbi; From 4f7e34f8eff0b3dbbd75cc778b0a363bdb29ac18 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 10:11:03 +0000 Subject: [PATCH 078/125] FB: sa1100: add .owner initializer to driver structure Annotate the driver structure with the .owner field, to allow the module to be associated with the driver. Acked-by: Florian Tobias Schandinat Signed-off-by: Russell King --- drivers/video/sa1100fb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c index 2cc268c0e89..bac9d4f39da 100644 --- a/drivers/video/sa1100fb.c +++ b/drivers/video/sa1100fb.c @@ -1505,6 +1505,7 @@ static struct platform_driver sa1100fb_driver = { .resume = sa1100fb_resume, .driver = { .name = "sa11x0-fb", + .owner = THIS_MODULE, }, }; From 58f5cbf275f8fb9529cba20df2564d370a6107da Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 10:13:30 +0000 Subject: [PATCH 079/125] FB: sa1100: constify rgb structures The rgb structures should only be read and never written. Constify them. Acked-by: Florian Tobias Schandinat Signed-off-by: Russell King --- drivers/video/sa1100fb.c | 8 ++++---- drivers/video/sa1100fb.h | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c index bac9d4f39da..a797220fdf5 100644 --- a/drivers/video/sa1100fb.c +++ b/drivers/video/sa1100fb.c @@ -199,21 +199,21 @@ extern void (*sa1100fb_backlight_power)(int on); extern void (*sa1100fb_lcd_power)(int on); -static struct sa1100fb_rgb rgb_4 = { +static const struct sa1100fb_rgb rgb_4 = { .red = { .offset = 0, .length = 4, }, .green = { .offset = 0, .length = 4, }, .blue = { .offset = 0, .length = 4, }, .transp = { .offset = 0, .length = 0, }, }; -static struct sa1100fb_rgb rgb_8 = { +static const struct sa1100fb_rgb rgb_8 = { .red = { .offset = 0, .length = 8, }, .green = { .offset = 0, .length = 8, }, .blue = { .offset = 0, .length = 8, }, .transp = { .offset = 0, .length = 0, }, }; -static struct sa1100fb_rgb def_rgb_16 = { +static const struct sa1100fb_rgb def_rgb_16 = { .red = { .offset = 11, .length = 5, }, .green = { .offset = 5, .length = 6, }, .blue = { .offset = 0, .length = 5, }, @@ -270,7 +270,7 @@ static struct sa1100fb_mach_info h3600_info __devinitdata = { .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), }; -static struct sa1100fb_rgb h3600_rgb_16 = { +static const struct sa1100fb_rgb h3600_rgb_16 = { .red = { .offset = 12, .length = 4, }, .green = { .offset = 7, .length = 4, }, .blue = { .offset = 1, .length = 4, }, diff --git a/drivers/video/sa1100fb.h b/drivers/video/sa1100fb.h index 1c3b459865d..7a3d66a5516 100644 --- a/drivers/video/sa1100fb.h +++ b/drivers/video/sa1100fb.h @@ -65,7 +65,7 @@ struct sa1100fb_lcd_reg { struct sa1100fb_info { struct fb_info fb; struct device *dev; - struct sa1100fb_rgb *rgb[NR_RGB]; + const struct sa1100fb_rgb *rgb[NR_RGB]; u_int max_bpp; u_int max_xres; From 798892966871077b8c867abf3d491227037dc2eb Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 10:22:56 +0000 Subject: [PATCH 080/125] FB: sa1100: convert printks to dev_xxx() Use the dev_xxx() macros for driver kernel message output, rather than open coded printk() with KERN_ levels etc. Remove DPRINTK(). Acked-by: Florian Tobias Schandinat Signed-off-by: Russell King --- drivers/video/sa1100fb.c | 72 +++++++++++++++++++--------------------- drivers/video/sa1100fb.h | 9 ----- 2 files changed, 34 insertions(+), 47 deletions(-) diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c index a797220fdf5..ecd7cd4ce41 100644 --- a/drivers/video/sa1100fb.c +++ b/drivers/video/sa1100fb.c @@ -183,10 +183,6 @@ #include #include -/* - * debugging? - */ -#define DEBUG 0 /* * Complain if VAR is out of range. */ @@ -614,7 +610,7 @@ sa1100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) var->xres_virtual = max(var->xres_virtual, var->xres); var->yres_virtual = max(var->yres_virtual, var->yres); - DPRINTK("var->bits_per_pixel=%d\n", var->bits_per_pixel); + dev_dbg(fbi->dev, "var->bits_per_pixel=%d\n", var->bits_per_pixel); switch (var->bits_per_pixel) { case 4: rgbidx = RGB_4; @@ -638,16 +634,16 @@ sa1100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) var->blue = fbi->rgb[rgbidx]->blue; var->transp = fbi->rgb[rgbidx]->transp; - DPRINTK("RGBT length = %d:%d:%d:%d\n", + dev_dbg(fbi->dev, "RGBT length = %d:%d:%d:%d\n", var->red.length, var->green.length, var->blue.length, var->transp.length); - DPRINTK("RGBT offset = %d:%d:%d:%d\n", + dev_dbg(fbi->dev, "RGBT offset = %d:%d:%d:%d\n", var->red.offset, var->green.offset, var->blue.offset, var->transp.offset); #ifdef CONFIG_CPU_FREQ - printk(KERN_DEBUG "dma period = %d ps, clock = %d kHz\n", + dev_dbg(fbi->dev, "dma period = %d ps, clock = %d kHz\n", sa1100fb_display_dma_period(var), cpufreq_get(smp_processor_id())); #endif @@ -683,7 +679,7 @@ static int sa1100fb_set_par(struct fb_info *info) struct fb_var_screeninfo *var = &info->var; unsigned long palette_mem_size; - DPRINTK("set_par\n"); + dev_dbg(fbi->dev, "set_par\n"); if (var->bits_per_pixel == 16) fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR; @@ -704,7 +700,7 @@ static int sa1100fb_set_par(struct fb_info *info) palette_mem_size = fbi->palette_size * sizeof(u16); - DPRINTK("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size); + dev_dbg(fbi->dev, "palette_mem_size = 0x%08lx\n", palette_mem_size); fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size); fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size; @@ -775,7 +771,7 @@ static int sa1100fb_blank(int blank, struct fb_info *info) struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; int i; - DPRINTK("sa1100fb_blank: blank=%d\n", blank); + dev_dbg(fbi->dev, "sa1100fb_blank: blank=%d\n", blank); switch (blank) { case FB_BLANK_POWERDOWN: @@ -863,39 +859,39 @@ static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_ u_int half_screen_size, yres, pcd; u_long flags; - DPRINTK("Configuring SA1100 LCD\n"); + dev_dbg(fbi->dev, "Configuring SA1100 LCD\n"); - DPRINTK("var: xres=%d hslen=%d lm=%d rm=%d\n", + dev_dbg(fbi->dev, "var: xres=%d hslen=%d lm=%d rm=%d\n", var->xres, var->hsync_len, var->left_margin, var->right_margin); - DPRINTK("var: yres=%d vslen=%d um=%d bm=%d\n", + dev_dbg(fbi->dev, "var: yres=%d vslen=%d um=%d bm=%d\n", var->yres, var->vsync_len, var->upper_margin, var->lower_margin); #if DEBUG_VAR if (var->xres < 16 || var->xres > 1024) - printk(KERN_ERR "%s: invalid xres %d\n", + dev_err(fbi->dev, "%s: invalid xres %d\n", fbi->fb.fix.id, var->xres); if (var->hsync_len < 1 || var->hsync_len > 64) - printk(KERN_ERR "%s: invalid hsync_len %d\n", + dev_err(fbi->dev, "%s: invalid hsync_len %d\n", fbi->fb.fix.id, var->hsync_len); if (var->left_margin < 1 || var->left_margin > 255) - printk(KERN_ERR "%s: invalid left_margin %d\n", + dev_err(fbi->dev, "%s: invalid left_margin %d\n", fbi->fb.fix.id, var->left_margin); if (var->right_margin < 1 || var->right_margin > 255) - printk(KERN_ERR "%s: invalid right_margin %d\n", + dev_err(fbi->dev, "%s: invalid right_margin %d\n", fbi->fb.fix.id, var->right_margin); if (var->yres < 1 || var->yres > 1024) - printk(KERN_ERR "%s: invalid yres %d\n", + dev_err(fbi->dev, "%s: invalid yres %d\n", fbi->fb.fix.id, var->yres); if (var->vsync_len < 1 || var->vsync_len > 64) - printk(KERN_ERR "%s: invalid vsync_len %d\n", + dev_err(fbi->dev, "%s: invalid vsync_len %d\n", fbi->fb.fix.id, var->vsync_len); if (var->upper_margin < 0 || var->upper_margin > 255) - printk(KERN_ERR "%s: invalid upper_margin %d\n", + dev_err(fbi->dev, "%s: invalid upper_margin %d\n", fbi->fb.fix.id, var->upper_margin); if (var->lower_margin < 0 || var->lower_margin > 255) - printk(KERN_ERR "%s: invalid lower_margin %d\n", + dev_err(fbi->dev, "%s: invalid lower_margin %d\n", fbi->fb.fix.id, var->lower_margin); #endif @@ -928,10 +924,10 @@ static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_ (var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) | (var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL); - DPRINTK("nlccr0 = 0x%08lx\n", new_regs.lccr0); - DPRINTK("nlccr1 = 0x%08lx\n", new_regs.lccr1); - DPRINTK("nlccr2 = 0x%08lx\n", new_regs.lccr2); - DPRINTK("nlccr3 = 0x%08lx\n", new_regs.lccr3); + dev_dbg(fbi->dev, "nlccr0 = 0x%08lx\n", new_regs.lccr0); + dev_dbg(fbi->dev, "nlccr1 = 0x%08lx\n", new_regs.lccr1); + dev_dbg(fbi->dev, "nlccr2 = 0x%08lx\n", new_regs.lccr2); + dev_dbg(fbi->dev, "nlccr3 = 0x%08lx\n", new_regs.lccr3); half_screen_size = var->bits_per_pixel; half_screen_size = half_screen_size * var->xres * var->yres / 16; @@ -967,7 +963,7 @@ static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_ */ static inline void __sa1100fb_backlight_power(struct sa1100fb_info *fbi, int on) { - DPRINTK("backlight o%s\n", on ? "n" : "ff"); + dev_dbg(fbi->dev, "backlight o%s\n", on ? "n" : "ff"); if (sa1100fb_backlight_power) sa1100fb_backlight_power(on); @@ -975,7 +971,7 @@ static inline void __sa1100fb_backlight_power(struct sa1100fb_info *fbi, int on) static inline void __sa1100fb_lcd_power(struct sa1100fb_info *fbi, int on) { - DPRINTK("LCD power o%s\n", on ? "n" : "ff"); + dev_dbg(fbi->dev, "LCD power o%s\n", on ? "n" : "ff"); if (sa1100fb_lcd_power) sa1100fb_lcd_power(on); @@ -1015,7 +1011,7 @@ static void sa1100fb_setup_gpio(struct sa1100fb_info *fbi) static void sa1100fb_enable_controller(struct sa1100fb_info *fbi) { - DPRINTK("Enabling LCD controller\n"); + dev_dbg(fbi->dev, "Enabling LCD controller\n"); /* * Make sure the mode bits are present in the first palette entry @@ -1037,19 +1033,19 @@ static void sa1100fb_enable_controller(struct sa1100fb_info *fbi) GPSR |= SHANNON_GPIO_DISP_EN; } - DPRINTK("DBAR1 = 0x%08x\n", DBAR1); - DPRINTK("DBAR2 = 0x%08x\n", DBAR2); - DPRINTK("LCCR0 = 0x%08x\n", LCCR0); - DPRINTK("LCCR1 = 0x%08x\n", LCCR1); - DPRINTK("LCCR2 = 0x%08x\n", LCCR2); - DPRINTK("LCCR3 = 0x%08x\n", LCCR3); + dev_dbg(fbi->dev, "DBAR1 = 0x%08lx\n", DBAR1); + dev_dbg(fbi->dev, "DBAR2 = 0x%08lx\n", DBAR2); + dev_dbg(fbi->dev, "LCCR0 = 0x%08lx\n", LCCR0); + dev_dbg(fbi->dev, "LCCR1 = 0x%08lx\n", LCCR1); + dev_dbg(fbi->dev, "LCCR2 = 0x%08lx\n", LCCR2); + dev_dbg(fbi->dev, "LCCR3 = 0x%08lx\n", LCCR3); } static void sa1100fb_disable_controller(struct sa1100fb_info *fbi) { DECLARE_WAITQUEUE(wait, current); - DPRINTK("Disabling LCD controller\n"); + dev_dbg(fbi->dev, "Disabling LCD controller\n"); if (machine_is_shannon()) { GPCR |= SHANNON_GPIO_DISP_EN; @@ -1268,7 +1264,7 @@ sa1100fb_freq_policy(struct notifier_block *nb, unsigned long val, switch (val) { case CPUFREQ_ADJUST: case CPUFREQ_INCOMPATIBLE: - printk(KERN_DEBUG "min dma period: %d ps, " + dev_dbg(fbi->dev, "min dma period: %d ps, " "new clock %d kHz\n", sa1100fb_min_dma_period(fbi), policy->max); /* todo: fill in min/max values */ @@ -1459,7 +1455,7 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev) ret = request_irq(irq, sa1100fb_handle_irq, 0, "LCD", fbi); if (ret) { - printk(KERN_ERR "sa1100fb: request_irq failed: %d\n", ret); + dev_err(&pdev->dev, "request_irq failed: %d\n", ret); goto failed; } diff --git a/drivers/video/sa1100fb.h b/drivers/video/sa1100fb.h index 7a3d66a5516..b1d5b089ee4 100644 --- a/drivers/video/sa1100fb.h +++ b/drivers/video/sa1100fb.h @@ -129,15 +129,6 @@ struct sa1100fb_info { #define SA1100_NAME "SA1100" -/* - * Debug macros - */ -#if DEBUG -# define DPRINTK(fmt, args...) printk("%s: " fmt, __func__ , ## args) -#else -# define DPRINTK(fmt, args...) -#endif - /* * Minimum X and Y resolutions */ From 531060fc1989a438fbc2c3198f5057c40121ff50 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 10:49:44 +0000 Subject: [PATCH 081/125] FB: sa1100: combine RGB bitfield overrides into sa1100fb_mach_info Allow the sa1100fb_mach_info structure to carry the RGB bitfield overrides, rather than requiring them to be separately initialized in sa1100fb_get_machine_info(). Acked-by: Florian Tobias Schandinat Signed-off-by: Russell King --- drivers/video/sa1100fb.c | 21 ++++++++++++++------- drivers/video/sa1100fb.h | 22 ++++++++++------------ 2 files changed, 24 insertions(+), 19 deletions(-) diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c index ecd7cd4ce41..a905e20404f 100644 --- a/drivers/video/sa1100fb.c +++ b/drivers/video/sa1100fb.c @@ -252,6 +252,13 @@ static struct sa1100fb_mach_info pal_info __devinitdata = { #endif #ifdef CONFIG_SA1100_H3600 +static const struct sa1100fb_rgb h3600_rgb_16 = { + .red = { .offset = 12, .length = 4, }, + .green = { .offset = 7, .length = 4, }, + .blue = { .offset = 1, .length = 4, }, + .transp = { .offset = 0, .length = 0, }, +}; + static struct sa1100fb_mach_info h3600_info __devinitdata = { .pixclock = 174757, .bpp = 16, .xres = 320, .yres = 240, @@ -264,13 +271,8 @@ static struct sa1100fb_mach_info h3600_info __devinitdata = { .lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), -}; -static const struct sa1100fb_rgb h3600_rgb_16 = { - .red = { .offset = 12, .length = 4, }, - .green = { .offset = 7, .length = 4, }, - .blue = { .offset = 1, .length = 4, }, - .transp = { .offset = 0, .length = 0, }, + .rgb[RGB_16] = &h3600_rgb_16, }; #endif @@ -413,7 +415,6 @@ sa1100fb_get_machine_info(struct sa1100fb_info *fbi) #ifdef CONFIG_SA1100_H3600 if (machine_is_h3600()) { inf = &h3600_info; - fbi->rgb[RGB_16] = &h3600_rgb_16; } #endif #ifdef CONFIG_SA1100_COLLIE @@ -1352,6 +1353,7 @@ static struct sa1100fb_info * __devinit sa1100fb_init_fbinfo(struct device *dev) { struct sa1100fb_mach_info *inf; struct sa1100fb_info *fbi; + unsigned i; fbi = kmalloc(sizeof(struct sa1100fb_info) + sizeof(u32) * 16, GFP_KERNEL); @@ -1424,6 +1426,11 @@ static struct sa1100fb_info * __devinit sa1100fb_init_fbinfo(struct device *dev) fbi->fb.fix.smem_len = fbi->max_xres * fbi->max_yres * fbi->max_bpp / 8; + /* Copy the RGB bitfield overrides */ + for (i = 0; i < NR_RGB; i++) + if (inf->rgb[i]) + fbi->rgb[i] = inf->rgb[i]; + init_waitqueue_head(&fbi->ctrlr_wait); INIT_WORK(&fbi->task, sa1100fb_task); mutex_init(&fbi->ctrlr_lock); diff --git a/drivers/video/sa1100fb.h b/drivers/video/sa1100fb.h index b1d5b089ee4..77239b766e5 100644 --- a/drivers/video/sa1100fb.h +++ b/drivers/video/sa1100fb.h @@ -10,10 +10,12 @@ * for more details. */ -/* - * These are the bitfields for each - * display depth that we support. - */ +#define RGB_4 0 +#define RGB_8 1 +#define RGB_16 2 +#define NR_RGB 3 + +/* These are the bitfields for each display depth that we support. */ struct sa1100fb_rgb { struct fb_bitfield red; struct fb_bitfield green; @@ -21,9 +23,7 @@ struct sa1100fb_rgb { struct fb_bitfield transp; }; -/* - * This structure describes the machine which we are running on. - */ +/* This structure describes the machine which we are running on. */ struct sa1100fb_mach_info { u_long pixclock; @@ -47,6 +47,9 @@ struct sa1100fb_mach_info { u_int lccr0; u_int lccr3; + + /* Overrides for the default RGB maps */ + const struct sa1100fb_rgb *rgb[NR_RGB]; }; /* Shadows for LCD controller registers */ @@ -57,11 +60,6 @@ struct sa1100fb_lcd_reg { unsigned long lccr3; }; -#define RGB_4 (0) -#define RGB_8 (1) -#define RGB_16 (2) -#define NR_RGB 3 - struct sa1100fb_info { struct fb_info fb; struct device *dev; From 9e6720fb0cfd6edda12b408a66f4ac88e8a82e32 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Jan 2012 10:56:06 +0000 Subject: [PATCH 082/125] FB: sa1100: move machine inf structures to