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linux-2.6/arch/arm/mach-pxa/trizeps4.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/trizeps4.c
*
* Support for the Keith und Koep Trizeps4 Module Platform.
*
* Author: Jürgen Schindele
* Created: 20 02, 2006
* Copyright: Jürgen Schindele
*
* 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/kernel.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/delay.h>
#include <linux/gpio.h>
#include <linux/dm9000.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.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/pxa2xx_spi.h>
#include <mach/trizeps4.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/irda.h>
#include <mach/ohci.h>
#include <plat/i2c.h>
#include "generic.h"
#include "devices.h"
/* comment out the following line if you want to use the
* Standard UART from PXA for serial / irda transmission
* and acivate it if you have status leds connected */
#define STATUS_LEDS_ON_STUART_PINS 1
/*****************************************************************************
* MultiFunctionPins of CPU
*****************************************************************************/
static unsigned long trizeps4_pin_config[] __initdata = {
/* Chip Selects */
GPIO15_nCS_1, /* DiskOnChip CS */
GPIO93_GPIO, /* TRIZEPS4_DOC_IRQ */
GPIO94_GPIO, /* DOC lock */
GPIO78_nCS_2, /* DM9000 CS */
GPIO101_GPIO, /* TRIZEPS4_ETH_IRQ */
GPIO79_nCS_3, /* Logic CS */
GPIO0_GPIO | WAKEUP_ON_EDGE_RISE, /* Logic irq */
/* 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,
/* UART */
GPIO9_FFUART_CTS,
GPIO10_FFUART_DCD,
GPIO16_FFUART_TXD,
GPIO33_FFUART_DSR,
GPIO38_FFUART_RI,
GPIO82_FFUART_DTR,
GPIO83_FFUART_RTS,
GPIO96_FFUART_RXD,
GPIO42_BTUART_RXD,
GPIO43_BTUART_TXD,
GPIO44_BTUART_CTS,
GPIO45_BTUART_RTS,
#ifdef STATUS_LEDS_ON_STUART_PINS
GPIO46_GPIO,
GPIO47_GPIO,
#else
GPIO46_STUART_RXD,
GPIO47_STUART_TXD,
#endif
/* PCMCIA */
GPIO11_GPIO, /* TRIZEPS4_CD_IRQ */
GPIO13_GPIO, /* TRIZEPS4_READY_NINT */
GPIO48_nPOE,
GPIO49_nPWE,
GPIO50_nPIOR,
GPIO51_nPIOW,
GPIO54_nPCE_2,
GPIO55_nPREG,
GPIO56_nPWAIT,
GPIO57_nIOIS16,
GPIO102_nPCE_1,
GPIO104_PSKTSEL,
/* MultiMediaCard */
GPIO32_MMC_CLK,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
GPIO112_MMC_CMD,
GPIO12_GPIO, /* TRIZEPS4_MMC_IRQ */
/* USB OHCI */
GPIO88_USBH1_PWR, /* USBHPWR1 */
GPIO89_USBH1_PEN, /* USBHPEN1 */
/* I2C */
GPIO117_I2C_SCL,
GPIO118_I2C_SDA,
};
static unsigned long trizeps4wl_pin_config[] __initdata = {
/* SSP 2 */
GPIO14_SSP2_SFRM,
GPIO19_SSP2_SCLK,
GPIO53_GPIO, /* TRIZEPS4_SPI_IRQ */
GPIO86_SSP2_RXD,
GPIO87_SSP2_TXD,
};
/****************************************************************************
* ONBOARD FLASH
****************************************************************************/
static struct mtd_partition trizeps4_partitions[] = {
{
.name = "Bootloader",
.offset = 0x00000000,
.size = 0x00040000,
.mask_flags = MTD_WRITEABLE /* force read-only */
}, {
.name = "Backup",
.offset = 0x00040000,
.size = 0x00040000,
}, {
.name = "Image",
.offset = 0x00080000,
.size = 0x01080000,
}, {
.name = "IPSM",
.offset = 0x01100000,
.size = 0x00e00000,
}, {
.name = "Registry",
.offset = 0x01f00000,
.size = MTDPART_SIZ_FULL,
}
};
static struct physmap_flash_data trizeps4_flash_data[] = {
{
.width = 4, /* bankwidth in bytes */
.parts = trizeps4_partitions,
.nr_parts = ARRAY_SIZE(trizeps4_partitions)
}
};
static struct resource flash_resource = {
.start = PXA_CS0_PHYS,
.end = PXA_CS0_PHYS + SZ_32M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = trizeps4_flash_data,
},
.resource = &flash_resource,
.num_resources = 1,
};
/****************************************************************************
* DAVICOM DM9000 Ethernet
****************************************************************************/
static struct resource dm9000_resources[] = {
[0] = {
.start = TRIZEPS4_ETH_PHYS+0x300,
.end = TRIZEPS4_ETH_PHYS+0x400-1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = TRIZEPS4_ETH_PHYS+0x8300,
.end = TRIZEPS4_ETH_PHYS+0x8400-1,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = TRIZEPS4_ETH_IRQ,
.end = TRIZEPS4_ETH_IRQ,
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
},
};
static struct dm9000_plat_data tri_dm9000_platdata = {
.flags = DM9000_PLATF_32BITONLY,
};
static struct platform_device dm9000_device = {
.name = "dm9000",
.id = -1,
.num_resources = ARRAY_SIZE(dm9000_resources),
.resource = dm9000_resources,
.dev = {
.platform_data = &tri_dm9000_platdata,
}
};
/****************************************************************************
* LED's on GPIO pins of PXA
****************************************************************************/
static struct gpio_led trizeps4_led[] = {
#ifdef STATUS_LEDS_ON_STUART_PINS
{
.name = "led0:orange:heartbeat", /* */
.default_trigger = "heartbeat",
.gpio = GPIO_HEARTBEAT_LED,
.active_low = 1,
},
{
.name = "led1:yellow:cpubusy", /* */
.default_trigger = "cpu-busy",
.gpio = GPIO_SYS_BUSY_LED,
.active_low = 1,
},
#endif
};
static struct gpio_led_platform_data trizeps4_led_data = {
.leds = trizeps4_led,
.num_leds = ARRAY_SIZE(trizeps4_led),
};
static struct platform_device leds_devices = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &trizeps4_led_data,
},
};
static struct platform_device *trizeps4_devices[] __initdata = {
&flash_device,
&dm9000_device,
&leds_devices,
};
static struct platform_device *trizeps4wl_devices[] __initdata = {
&flash_device,
&leds_devices,
};
static short trizeps_conxs_bcr;
/* PCCARD power switching supports only 3,3V */
void board_pcmcia_power(int power)
{
if (power) {
/* switch power on, put in reset and enable buffers */
trizeps_conxs_bcr |= power;
trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
trizeps_conxs_bcr &= ~ConXS_BCR_CF_BUF_EN;
BCR_writew(trizeps_conxs_bcr);
/* wait a little */
udelay(2000);
/* take reset away */
trizeps_conxs_bcr &= ~ConXS_BCR_CF_RESET;
BCR_writew(trizeps_conxs_bcr);
udelay(2000);
} else {
/* put in reset */
trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
BCR_writew(trizeps_conxs_bcr);
udelay(1000);
/* switch power off */
trizeps_conxs_bcr &= ~0xf;
BCR_writew(trizeps_conxs_bcr);
}
pr_debug("%s: o%s 0x%x\n", __func__, power ? "n" : "ff",
trizeps_conxs_bcr);
}
EXPORT_SYMBOL(board_pcmcia_power);
/* backlight power switching for LCD panel */
static void board_backlight_power(int on)
{
if (on)
trizeps_conxs_bcr |= ConXS_BCR_L_DISP;
else
trizeps_conxs_bcr &= ~ConXS_BCR_L_DISP;
pr_debug("%s: o%s 0x%x\n", __func__, on ? "n" : "ff",
trizeps_conxs_bcr);
BCR_writew(trizeps_conxs_bcr);
}
/* a I2C based RTC is known on CONXS board */
static struct i2c_board_info trizeps4_i2c_devices[] __initdata = {
{ I2C_BOARD_INFO("rtc-pcf8593", 0x51) }
};
/****************************************************************************
* MMC card slot external to module
****************************************************************************/
static int trizeps4_mci_init(struct device *dev, irq_handler_t mci_detect_int,
void *data)
{
int err;
err = request_irq(TRIZEPS4_MMC_IRQ, mci_detect_int,
IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_SAMPLE_RANDOM,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "trizeps4_mci_init: MMC/SD: can't request"
"MMC card detect IRQ\n");
return -1;
}
return 0;
}
static void trizeps4_mci_exit(struct device *dev, void *data)
{
free_irq(TRIZEPS4_MMC_IRQ, data);
}
static struct pxamci_platform_data trizeps4_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.detect_delay = 1,
.init = trizeps4_mci_init,
.exit = trizeps4_mci_exit,
.get_ro = NULL, /* write-protection not supported */
.setpower = NULL, /* power-switching not supported */
.gpio_card_detect = -1,
.gpio_card_ro = -1,
.gpio_power = -1,
};
/****************************************************************************
* IRDA mode switching on stuart
****************************************************************************/
#ifndef STATUS_LEDS_ON_STUART_PINS
static short trizeps_conxs_ircr;
static int trizeps4_irda_startup(struct device *dev)
{
trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
IRCR_writew(trizeps_conxs_ircr);
return 0;
}
static void trizeps4_irda_shutdown(struct device *dev)
{
trizeps_conxs_ircr |= ConXS_IRCR_SD;
IRCR_writew(trizeps_conxs_ircr);
}
static void trizeps4_irda_transceiver_mode(struct device *dev, int mode)
{
unsigned long flags;
local_irq_save(flags);
/* Switch mode */
if (mode & IR_SIRMODE)
trizeps_conxs_ircr &= ~ConXS_IRCR_MODE; /* Slow mode */
else if (mode & IR_FIRMODE)
trizeps_conxs_ircr |= ConXS_IRCR_MODE; /* Fast mode */
/* Switch power */
if (mode & IR_OFF)
trizeps_conxs_ircr |= ConXS_IRCR_SD;
else
trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
IRCR_writew(trizeps_conxs_ircr);
local_irq_restore(flags);
pxa2xx_transceiver_mode(dev, mode);
}
static struct pxaficp_platform_data trizeps4_ficp_platform_data = {
.gpio_pwdown = -1,
.transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
.transceiver_mode = trizeps4_irda_transceiver_mode,
.startup = trizeps4_irda_startup,
.shutdown = trizeps4_irda_shutdown,
};
#endif
/****************************************************************************
* OHCI USB port
****************************************************************************/
static struct pxaohci_platform_data trizeps4_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};
static struct map_desc trizeps4_io_desc[] __initdata = {
{ /* ConXS CFSR */
.virtual = TRIZEPS4_CFSR_VIRT,
.pfn = __phys_to_pfn(TRIZEPS4_CFSR_PHYS),
.length = 0x00001000,
.type = MT_DEVICE
},
{ /* ConXS BCR */
.virtual = TRIZEPS4_BOCR_VIRT,
.pfn = __phys_to_pfn(TRIZEPS4_BOCR_PHYS),
.length = 0x00001000,
.type = MT_DEVICE
},
{ /* ConXS IRCR */
.virtual = TRIZEPS4_IRCR_VIRT,
.pfn = __phys_to_pfn(TRIZEPS4_IRCR_PHYS),
.length = 0x00001000,
.type = MT_DEVICE
},
{ /* ConXS DCR */
.virtual = TRIZEPS4_DICR_VIRT,
.pfn = __phys_to_pfn(TRIZEPS4_DICR_PHYS),
.length = 0x00001000,
.type = MT_DEVICE
},
{ /* ConXS UPSR */
.virtual = TRIZEPS4_UPSR_VIRT,
.pfn = __phys_to_pfn(TRIZEPS4_UPSR_PHYS),
.length = 0x00001000,
.type = MT_DEVICE
}
};
static struct pxafb_mode_info sharp_lcd_mode = {
.pixclock = 78000,
.xres = 640,
.yres = 480,
.bpp = 8,
.hsync_len = 4,
.left_margin = 4,
.right_margin = 4,
.vsync_len = 2,
.upper_margin = 0,
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info sharp_lcd = {
.modes = &sharp_lcd_mode,
.num_modes = 1,
.lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL,
.cmap_inverse = 0,
.cmap_static = 0,
.pxafb_backlight_power = board_backlight_power,
};
static struct pxafb_mode_info toshiba_lcd_mode = {
.pixclock = 39720,
.xres = 640,
.yres = 480,
.bpp = 8,
.hsync_len = 63,
.left_margin = 12,
.right_margin = 12,
.vsync_len = 4,
.upper_margin = 32,
.lower_margin = 10,
.sync = 0,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info toshiba_lcd = {
.modes = &toshiba_lcd_mode,
.num_modes = 1,
.lcd_conn = (LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL),
.cmap_inverse = 0,
.cmap_static = 0,
.pxafb_backlight_power = board_backlight_power,
};
static void __init trizeps4_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4_pin_config));
if (machine_is_trizeps4wl()) {
pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4wl_pin_config));
platform_add_devices(trizeps4wl_devices,
ARRAY_SIZE(trizeps4wl_devices));
} else {
platform_add_devices(trizeps4_devices,
ARRAY_SIZE(trizeps4_devices));
}
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
if (0) /* dont know how to determine LCD */
set_pxa_fb_info(&sharp_lcd);
else
set_pxa_fb_info(&toshiba_lcd);
pxa_set_mci_info(&trizeps4_mci_platform_data);
#ifndef STATUS_LEDS_ON_STUART_PINS
pxa_set_ficp_info(&trizeps4_ficp_platform_data);
#endif
pxa_set_ohci_info(&trizeps4_ohci_platform_data);
pxa_set_ac97_info(NULL);
pxa_set_i2c_info(NULL);
i2c_register_board_info(0, trizeps4_i2c_devices,
ARRAY_SIZE(trizeps4_i2c_devices));
#ifdef CONFIG_IDE_PXA_CF
/* if boot direct from compact flash dont disable power */
trizeps_conxs_bcr = 0x0009;
#else
/* this is the reset value */
trizeps_conxs_bcr = 0x00A0;
#endif
BCR_writew(trizeps_conxs_bcr);
board_backlight_power(1);
}
static void __init trizeps4_map_io(void)
{
pxa_map_io();
iotable_init(trizeps4_io_desc, ARRAY_SIZE(trizeps4_io_desc));
if ((MSC0 & 0x8) && (BOOT_DEF & 0x1)) {
/* if flash is 16 bit wide its a Trizeps4 WL */
__machine_arch_type = MACH_TYPE_TRIZEPS4WL;
trizeps4_flash_data[0].width = 2;
} else {
/* if flash is 32 bit wide its a Trizeps4 */
__machine_arch_type = MACH_TYPE_TRIZEPS4;
trizeps4_flash_data[0].width = 4;
}
}
MACHINE_START(TRIZEPS4, "Keith und Koep Trizeps IV module")
/* MAINTAINER("Jürgen Schindele") */
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.boot_params = TRIZEPS4_SDRAM_BASE + 0x100,
.init_machine = trizeps4_init,
.map_io = trizeps4_map_io,
.init_irq = pxa27x_init_irq,
.timer = &pxa_timer,
MACHINE_END
MACHINE_START(TRIZEPS4WL, "Keith und Koep Trizeps IV-WL module")
/* MAINTAINER("Jürgen Schindele") */
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.boot_params = TRIZEPS4_SDRAM_BASE + 0x100,
.init_machine = trizeps4_init,
.map_io = trizeps4_map_io,
.init_irq = pxa27x_init_irq,
.timer = &pxa_timer,
MACHINE_END
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