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linux-2.6/arch/arm/mach-pxa/mainstone.c
Russell King cc155c6f2c [ARM] pxa: allow platforms to control which uarts are registered 
For some platforms, it is inappropriate to register all PXA UARTs.
In some cases, the UARTs may not be used, and in others we may want
to avoid registering the UARTs to allow other drivers (eg, FICP) to
make use of the UART.

In addition, a while back there was a request to be able to pass
platform data to the UART driver.

This patch enables all of this by providing functions platforms can
call to register each individual UART.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-12-01 09:02:55 +08:00

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/*
* linux/arch/arm/mach-pxa/mainstone.c
*
* Support for the Intel HCDDBBVA0 Development Platform.
* (go figure how they came up with such name...)
*
* Author: Nicolas Pitre
* Created: Nov 05, 2002
* Copyright: MontaVista Software Inc.
*
* 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.
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/pwm_backlight.h>
#include <linux/smc91x.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>
#include <mach/pxa27x.h>
#include <mach/gpio.h>
#include <mach/mainstone.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <plat/i2c.h>
#include <mach/mmc.h>
#include <mach/irda.h>
#include <mach/ohci.h>
#include <mach/pxa27x_keypad.h>
#include "generic.h"
#include "devices.h"
static unsigned long mainstone_pin_config[] = {
/* Chip Select */
GPIO15_nCS_1,
/* LCD - 16bpp Active TFT */
GPIO58_LCD_LDD_0,
GPIO59_LCD_LDD_1,
GPIO60_LCD_LDD_2,
GPIO61_LCD_LDD_3,
GPIO62_LCD_LDD_4,
GPIO63_LCD_LDD_5,
GPIO64_LCD_LDD_6,
GPIO65_LCD_LDD_7,
GPIO66_LCD_LDD_8,
GPIO67_LCD_LDD_9,
GPIO68_LCD_LDD_10,
GPIO69_LCD_LDD_11,
GPIO70_LCD_LDD_12,
GPIO71_LCD_LDD_13,
GPIO72_LCD_LDD_14,
GPIO73_LCD_LDD_15,
GPIO74_LCD_FCLK,
GPIO75_LCD_LCLK,
GPIO76_LCD_PCLK,
GPIO77_LCD_BIAS,
GPIO16_PWM0_OUT, /* Backlight */
/* MMC */
GPIO32_MMC_CLK,
GPIO112_MMC_CMD,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
/* USB Host Port 1 */
GPIO88_USBH1_PWR,
GPIO89_USBH1_PEN,
/* PC Card */
GPIO48_nPOE,
GPIO49_nPWE,
GPIO50_nPIOR,
GPIO51_nPIOW,
GPIO85_nPCE_1,
GPIO54_nPCE_2,
GPIO79_PSKTSEL,
GPIO55_nPREG,
GPIO56_nPWAIT,
GPIO57_nIOIS16,
/* AC97 */
GPIO45_AC97_SYSCLK,
/* Keypad */
GPIO93_KP_DKIN_0,
GPIO94_KP_DKIN_1,
GPIO95_KP_DKIN_2,
GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
GPIO97_KP_MKIN_3 | WAKEUP_ON_LEVEL_HIGH,
GPIO98_KP_MKIN_4 | WAKEUP_ON_LEVEL_HIGH,
GPIO99_KP_MKIN_5 | WAKEUP_ON_LEVEL_HIGH,
GPIO103_KP_MKOUT_0,
GPIO104_KP_MKOUT_1,
GPIO105_KP_MKOUT_2,
GPIO106_KP_MKOUT_3,
GPIO107_KP_MKOUT_4,
GPIO108_KP_MKOUT_5,
GPIO96_KP_MKOUT_6,
/* I2C */
GPIO117_I2C_SCL,
GPIO118_I2C_SDA,
/* GPIO */
GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
};
static unsigned long mainstone_irq_enabled;
static void mainstone_mask_irq(unsigned int irq)
{
int mainstone_irq = (irq - MAINSTONE_IRQ(0));
MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
}
static void mainstone_unmask_irq(unsigned int irq)
{
int mainstone_irq = (irq - MAINSTONE_IRQ(0));
/* the irq can be acknowledged only if deasserted, so it's done here */
MST_INTSETCLR &= ~(1 << mainstone_irq);
MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
}
static struct irq_chip mainstone_irq_chip = {
.name = "FPGA",
.ack = mainstone_mask_irq,
.mask = mainstone_mask_irq,
.unmask = mainstone_unmask_irq,
};
static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
do {
GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
if (likely(pending)) {
irq = MAINSTONE_IRQ(0) + __ffs(pending);
generic_handle_irq(irq);
}
pending = MST_INTSETCLR & mainstone_irq_enabled;
} while (pending);
}
static void __init mainstone_init_irq(void)
{
int irq;
pxa27x_init_irq();
/* setup extra Mainstone irqs */
for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
set_irq_chip(irq, &mainstone_irq_chip);
set_irq_handler(irq, handle_level_irq);
if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
else
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
set_irq_flags(MAINSTONE_IRQ(8), 0);
set_irq_flags(MAINSTONE_IRQ(12), 0);
MST_INTMSKENA = 0;
MST_INTSETCLR = 0;
set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
}
#ifdef CONFIG_PM
static int mainstone_irq_resume(struct sys_device *dev)
{
MST_INTMSKENA = mainstone_irq_enabled;
return 0;
}
static struct sysdev_class mainstone_irq_sysclass = {
.name = "cpld_irq",
.resume = mainstone_irq_resume,
};
static struct sys_device mainstone_irq_device = {
.cls = &mainstone_irq_sysclass,
};
static int __init mainstone_irq_device_init(void)
{
int ret = -ENODEV;
if (machine_is_mainstone()) {
ret = sysdev_class_register(&mainstone_irq_sysclass);
if (ret == 0)
ret = sysdev_register(&mainstone_irq_device);
}
return ret;
}
device_initcall(mainstone_irq_device_init);
#endif
static struct resource smc91x_resources[] = {
[0] = {
.start = (MST_ETH_PHYS + 0x300),
.end = (MST_ETH_PHYS + 0xfffff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = MAINSTONE_IRQ(3),
.end = MAINSTONE_IRQ(3),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
}
};
static struct smc91x_platdata mainstone_smc91x_info = {
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT | SMC91X_USE_DMA,
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
.dev = {
.platform_data = &mainstone_smc91x_info,
},
};
static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
{
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
return 0;
}
static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
{
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}
static long mst_audio_suspend_mask;
static void mst_audio_suspend(void *priv)
{
mst_audio_suspend_mask = MST_MSCWR2;
MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}
static void mst_audio_resume(void *priv)
{
MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
}
static pxa2xx_audio_ops_t mst_audio_ops = {
.startup = mst_audio_startup,
.shutdown = mst_audio_shutdown,
.suspend = mst_audio_suspend,
.resume = mst_audio_resume,
};
static struct resource flash_resources[] = {
[0] = {
.start = PXA_CS0_PHYS,
.end = PXA_CS0_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = PXA_CS1_PHYS,
.end = PXA_CS1_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
},
};
static struct mtd_partition mainstoneflash0_partitions[] = {
{
.name = "Bootloader",
.size = 0x00040000,
.offset = 0,
.mask_flags = MTD_WRITEABLE /* force read-only */
},{
.name = "Kernel",
.size = 0x00400000,
.offset = 0x00040000,
},{
.name = "Filesystem",
.size = MTDPART_SIZ_FULL,
.offset = 0x00440000
}
};
static struct flash_platform_data mst_flash_data[2] = {
{
.map_name = "cfi_probe",
.parts = mainstoneflash0_partitions,
.nr_parts = ARRAY_SIZE(mainstoneflash0_partitions),
}, {
.map_name = "cfi_probe",
.parts = NULL,
.nr_parts = 0,
}
};
static struct platform_device mst_flash_device[2] = {
{
.name = "pxa2xx-flash",
.id = 0,
.dev = {
.platform_data = &mst_flash_data[0],
},
.resource = &flash_resources[0],
.num_resources = 1,
},
{
.name = "pxa2xx-flash",
.id = 1,
.dev = {
.platform_data = &mst_flash_data[1],
},
.resource = &flash_resources[1],
.num_resources = 1,
},
};
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct platform_pwm_backlight_data mainstone_backlight_data = {
.pwm_id = 0,
.max_brightness = 1023,
.dft_brightness = 1023,
.pwm_period_ns = 78770,
};
static struct platform_device mainstone_backlight_device = {
.name = "pwm-backlight",
.dev = {
.parent = &pxa27x_device_pwm0.dev,
.platform_data = &mainstone_backlight_data,
},
};
static void __init mainstone_backlight_register(void)
{
int ret = platform_device_register(&mainstone_backlight_device);
if (ret)
printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
}
#else
#define mainstone_backlight_register() do { } while (0)
#endif
static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
.pixclock = 50000,
.xres = 640,
.yres = 480,
.bpp = 16,
.hsync_len = 1,
.left_margin = 0x9f,
.right_margin = 1,
.vsync_len = 44,
.upper_margin = 0,
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
.pixclock = 110000,
.xres = 240,
.yres = 320,
.bpp = 16,
.hsync_len = 4,
.left_margin = 8,
.right_margin = 20,
.vsync_len = 3,
.upper_margin = 1,
.lower_margin = 10,
.sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info mainstone_pxafb_info = {
.num_modes = 1,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
{
int err;
/* make sure SD/Memory Stick multiplexer's signals
* are routed to MMC controller
*/
MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
"MMC card detect", data);
if (err)
printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
return err;
}
static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
if (( 1 << vdd) & p_d->ocr_mask) {
printk(KERN_DEBUG "%s: on\n", __func__);
MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
} else {
printk(KERN_DEBUG "%s: off\n", __func__);
MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
}
}
static void mainstone_mci_exit(struct device *dev, void *data)
{
free_irq(MAINSTONE_MMC_IRQ, data);
}
static struct pxamci_platform_data mainstone_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = mainstone_mci_init,
.setpower = mainstone_mci_setpower,
.exit = mainstone_mci_exit,
.gpio_card_detect = -1,
.gpio_card_ro = -1,
.gpio_power = -1,
};
static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
{
unsigned long flags;
local_irq_save(flags);
if (mode & IR_SIRMODE) {
MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
} else if (mode & IR_FIRMODE) {
MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
}
pxa2xx_transceiver_mode(dev, mode);
if (mode & IR_OFF) {
MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
} else {
MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
}
local_irq_restore(flags);
}
static struct pxaficp_platform_data mainstone_ficp_platform_data = {
.gpio_pwdown = -1,
.transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
.transceiver_mode = mainstone_irda_transceiver_mode,
};
static struct gpio_keys_button gpio_keys_button[] = {
[0] = {
.desc = "wakeup",
.code = KEY_SUSPEND,
.type = EV_KEY,
.gpio = 1,
.wakeup = 1,
},
};
static struct gpio_keys_platform_data mainstone_gpio_keys = {
.buttons = gpio_keys_button,
.nbuttons = 1,
};
static struct platform_device mst_gpio_keys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &mainstone_gpio_keys,
},
};
static struct platform_device *platform_devices[] __initdata = {
&smc91x_device,
&mst_flash_device[0],
&mst_flash_device[1],
&mst_gpio_keys_device,
};
static struct pxaohci_platform_data mainstone_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};
#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static unsigned int mainstone_matrix_keys[] = {
KEY(0, 0, KEY_A), KEY(1, 0, KEY_B), KEY(2, 0, KEY_C),
KEY(3, 0, KEY_D), KEY(4, 0, KEY_E), KEY(5, 0, KEY_F),
KEY(0, 1, KEY_G), KEY(1, 1, KEY_H), KEY(2, 1, KEY_I),
KEY(3, 1, KEY_J), KEY(4, 1, KEY_K), KEY(5, 1, KEY_L),
KEY(0, 2, KEY_M), KEY(1, 2, KEY_N), KEY(2, 2, KEY_O),
KEY(3, 2, KEY_P), KEY(4, 2, KEY_Q), KEY(5, 2, KEY_R),
KEY(0, 3, KEY_S), KEY(1, 3, KEY_T), KEY(2, 3, KEY_U),
KEY(3, 3, KEY_V), KEY(4, 3, KEY_W), KEY(5, 3, KEY_X),
KEY(2, 4, KEY_Y), KEY(3, 4, KEY_Z),
KEY(0, 4, KEY_DOT), /* . */
KEY(1, 4, KEY_CLOSE), /* @ */
KEY(4, 4, KEY_SLASH),
KEY(5, 4, KEY_BACKSLASH),
KEY(0, 5, KEY_HOME),
KEY(1, 5, KEY_LEFTSHIFT),
KEY(2, 5, KEY_SPACE),
KEY(3, 5, KEY_SPACE),
KEY(4, 5, KEY_ENTER),
KEY(5, 5, KEY_BACKSPACE),
KEY(0, 6, KEY_UP),
KEY(1, 6, KEY_DOWN),
KEY(2, 6, KEY_LEFT),
KEY(3, 6, KEY_RIGHT),
KEY(4, 6, KEY_SELECT),
};
struct pxa27x_keypad_platform_data mainstone_keypad_info = {
.matrix_key_rows = 6,
.matrix_key_cols = 7,
.matrix_key_map = mainstone_matrix_keys,
.matrix_key_map_size = ARRAY_SIZE(mainstone_matrix_keys),
.enable_rotary0 = 1,
.rotary0_up_key = KEY_UP,
.rotary0_down_key = KEY_DOWN,
.debounce_interval = 30,
};
static void __init mainstone_init_keypad(void)
{
pxa_set_keypad_info(&mainstone_keypad_info);
}
#else
static inline void mainstone_init_keypad(void) {}
#endif
static void __init mainstone_init(void)
{
int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
pxa2xx_mfp_config(ARRAY_AND_SIZE(mainstone_pin_config));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
mst_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
mst_flash_data[1].width = 4;
/* Compensate for SW7 which swaps the flash banks */
mst_flash_data[SW7].name = "processor-flash";
mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
mst_flash_data[0].name);
/* system bus arbiter setting
* - Core_Park
* - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
*/
ARB_CNTRL = ARB_CORE_PARK | 0x234;
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
/* reading Mainstone's "Virtual Configuration Register"
might be handy to select LCD type here */
if (0)
mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
else
mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
set_pxa_fb_info(&mainstone_pxafb_info);
mainstone_backlight_register();
pxa_set_mci_info(&mainstone_mci_platform_data);
pxa_set_ficp_info(&mainstone_ficp_platform_data);
pxa_set_ohci_info(&mainstone_ohci_platform_data);
pxa_set_i2c_info(NULL);
pxa_set_ac97_info(&mst_audio_ops);
mainstone_init_keypad();
}
static struct map_desc mainstone_io_desc[] __initdata = {
{ /* CPLD */
.virtual = MST_FPGA_VIRT,
.pfn = __phys_to_pfn(MST_FPGA_PHYS),
.length = 0x00100000,
.type = MT_DEVICE
}
};
static void __init mainstone_map_io(void)
{
pxa_map_io();
iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
/* for use I SRAM as framebuffer. */
PSLR |= 0xF04;
PCFR = 0x66;
}
MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
/* Maintainer: MontaVista Software Inc. */
.phys_io = 0x40000000,
.boot_params = 0xa0000100, /* BLOB boot parameter setting */
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.map_io = mainstone_map_io,
.init_irq = mainstone_init_irq,
.timer = &pxa_timer,
.init_machine = mainstone_init,
MACHINE_END
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