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linux/arch/arm/mach-pxa/corgi.c
Richard Purdie 74617fb6b8 [ARM] 3593/1: Add reboot and shutdown handlers for Zaurus handhelds 
Patch from Richard Purdie

Add functionality to allow machine specific reboot handlers on ARM.
Add machine specific reboot and poweroff handlers for all PXA Zaurus
models.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-19 19:57:12 +01:00

414 lines
9.4 KiB
C
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/*
* Support for Sharp SL-C7xx PDAs
* Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
*
* Copyright (c) 2004-2005 Richard Purdie
*
* Based on Sharp's 2.4 kernel patches/lubbock.c
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/irda.h>
#include <asm/arch/mmc.h>
#include <asm/arch/udc.h>
#include <asm/arch/corgi.h>
#include <asm/arch/sharpsl.h>
#include <asm/mach/sharpsl_param.h>
#include <asm/hardware/scoop.h>
#include "generic.h"
#include "sharpsl.h"
/*
* Corgi SCOOP Device
*/
static struct resource corgi_scoop_resources[] = {
[0] = {
.start = 0x10800000,
.end = 0x10800fff,
.flags = IORESOURCE_MEM,
},
};
static struct scoop_config corgi_scoop_setup = {
.io_dir = CORGI_SCOOP_IO_DIR,
.io_out = CORGI_SCOOP_IO_OUT,
};
struct platform_device corgiscoop_device = {
.name = "sharp-scoop",
.id = -1,
.dev = {
.platform_data = &corgi_scoop_setup,
},
.num_resources = ARRAY_SIZE(corgi_scoop_resources),
.resource = corgi_scoop_resources,
};
static void corgi_pcmcia_init(void)
{
/* Setup default state of GPIO outputs
before we enable them as outputs. */
GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) |
GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) |
GPIO_bit(GPIO53_nPCE_2);
pxa_gpio_mode(GPIO48_nPOE_MD);
pxa_gpio_mode(GPIO49_nPWE_MD);
pxa_gpio_mode(GPIO50_nPIOR_MD);
pxa_gpio_mode(GPIO51_nPIOW_MD);
pxa_gpio_mode(GPIO55_nPREG_MD);
pxa_gpio_mode(GPIO56_nPWAIT_MD);
pxa_gpio_mode(GPIO57_nIOIS16_MD);
pxa_gpio_mode(GPIO52_nPCE_1_MD);
pxa_gpio_mode(GPIO53_nPCE_2_MD);
pxa_gpio_mode(GPIO54_pSKTSEL_MD);
}
static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = {
{
.dev = &corgiscoop_device.dev,
.irq = CORGI_IRQ_GPIO_CF_IRQ,
.cd_irq = CORGI_IRQ_GPIO_CF_CD,
.cd_irq_str = "PCMCIA0 CD",
},
};
static struct scoop_pcmcia_config corgi_pcmcia_config = {
.devs = &corgi_pcmcia_scoop[0],
.num_devs = 1,
.pcmcia_init = corgi_pcmcia_init,
};
EXPORT_SYMBOL(corgiscoop_device);
/*
* Corgi SSP Device
*
* Set the parent as the scoop device because a lot of SSP devices
* also use scoop functions and this makes the power up/down order
* work correctly.
*/
struct platform_device corgissp_device = {
.name = "corgi-ssp",
.dev = {
.parent = &corgiscoop_device.dev,
},
.id = -1,
};
struct corgissp_machinfo corgi_ssp_machinfo = {
.port = 1,
.cs_lcdcon = CORGI_GPIO_LCDCON_CS,
.cs_ads7846 = CORGI_GPIO_ADS7846_CS,
.cs_max1111 = CORGI_GPIO_MAX1111_CS,
.clk_lcdcon = 76,
.clk_ads7846 = 2,
.clk_max1111 = 8,
};
/*
* Corgi Backlight Device
*/
static struct corgibl_machinfo corgi_bl_machinfo = {
.max_intensity = 0x2f,
.default_intensity = 0x1f,
.limit_mask = 0x0b,
.set_bl_intensity = corgi_bl_set_intensity,
};
static struct platform_device corgibl_device = {
.name = "corgi-bl",
.dev = {
.parent = &corgifb_device.dev,
.platform_data = &corgi_bl_machinfo,
},
.id = -1,
};
/*
* Corgi Keyboard Device
*/
static struct platform_device corgikbd_device = {
.name = "corgi-keyboard",
.id = -1,
};
/*
* Corgi LEDs
*/
static struct platform_device corgiled_device = {
.name = "corgi-led",
.id = -1,
};
/*
* Corgi Touch Screen Device
*/
static struct resource corgits_resources[] = {
[0] = {
.start = CORGI_IRQ_GPIO_TP_INT,
.end = CORGI_IRQ_GPIO_TP_INT,
.flags = IORESOURCE_IRQ,
},
};
static struct corgits_machinfo corgi_ts_machinfo = {
.get_hsync_len = corgi_get_hsync_len,
.put_hsync = corgi_put_hsync,
.wait_hsync = corgi_wait_hsync,
};
static struct platform_device corgits_device = {
.name = "corgi-ts",
.dev = {
.parent = &corgissp_device.dev,
.platform_data = &corgi_ts_machinfo,
},
.id = -1,
.num_resources = ARRAY_SIZE(corgits_resources),
.resource = corgits_resources,
};
/*
* MMC/SD Device
*
* The card detect interrupt isn't debounced so we delay it by 250ms
* to give the card a chance to fully insert/eject.
*/
static struct pxamci_platform_data corgi_mci_platform_data;
static int corgi_mci_init(struct device *dev, irqreturn_t (*corgi_detect_int)(int, void *, struct pt_regs *), void *data)
{
int err;
/* setup GPIO for PXA25x MMC controller */
pxa_gpio_mode(GPIO6_MMCCLK_MD);
pxa_gpio_mode(GPIO8_MMCCS0_MD);
pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
corgi_mci_platform_data.detect_delay = msecs_to_jiffies(250);
err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_detect_int,
SA_INTERRUPT | SA_TRIGGER_RISING | SA_TRIGGER_FALLING,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
return -1;
}
return 0;
}
static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
if (( 1 << vdd) & p_d->ocr_mask)
GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
else
GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
}
static int corgi_mci_get_ro(struct device *dev)
{
return GPLR(CORGI_GPIO_nSD_WP) & GPIO_bit(CORGI_GPIO_nSD_WP);
}
static void corgi_mci_exit(struct device *dev, void *data)
{
free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
}
static struct pxamci_platform_data corgi_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = corgi_mci_init,
.get_ro = corgi_mci_get_ro,
.setpower = corgi_mci_setpower,
.exit = corgi_mci_exit,
};
/*
* Irda
*/
static void corgi_irda_transceiver_mode(struct device *dev, int mode)
{
if (mode & IR_OFF)
GPSR(CORGI_GPIO_IR_ON) = GPIO_bit(CORGI_GPIO_IR_ON);
else
GPCR(CORGI_GPIO_IR_ON) = GPIO_bit(CORGI_GPIO_IR_ON);
}
static struct pxaficp_platform_data corgi_ficp_platform_data = {
.transceiver_cap = IR_SIRMODE | IR_OFF,
.transceiver_mode = corgi_irda_transceiver_mode,
};
/*
* USB Device Controller
*/
static void corgi_udc_command(int cmd)
{
switch(cmd) {
case PXA2XX_UDC_CMD_CONNECT:
GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
break;
case PXA2XX_UDC_CMD_DISCONNECT:
GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
break;
}
}
static struct pxa2xx_udc_mach_info udc_info __initdata = {
/* no connect GPIO; corgi can't tell connection status */
.udc_command = corgi_udc_command,
};
static struct platform_device *devices[] __initdata = {
&corgiscoop_device,
&corgissp_device,
&corgifb_device,
&corgikbd_device,
&corgibl_device,
&corgits_device,
&corgiled_device,
};
static void corgi_poweroff(void)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
if (!machine_is_corgi())
/* Green LED off tells the bootloader to halt */
reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
arm_machine_restart('h');
}
static void corgi_restart(char mode)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
if (!machine_is_corgi())
/* Green LED on tells the bootloader to reboot */
set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
arm_machine_restart('h');
}
static void __init corgi_init(void)
{
pm_power_off = corgi_poweroff;
arm_pm_restart = corgi_restart;
/* setup sleep mode values */
PWER = 0x00000002;
PFER = 0x00000000;
PRER = 0x00000002;
PGSR0 = 0x0158C000;
PGSR1 = 0x00FF0080;
PGSR2 = 0x0001C004;
/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
PCFR |= PCFR_OPDE;
corgi_ssp_set_machinfo(&corgi_ssp_machinfo);
pxa_gpio_mode(CORGI_GPIO_IR_ON | GPIO_OUT);
pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
pxa_set_udc_info(&udc_info);
pxa_set_mci_info(&corgi_mci_platform_data);
pxa_set_ficp_info(&corgi_ficp_platform_data);
platform_scoop_config = &corgi_pcmcia_config;
platform_add_devices(devices, ARRAY_SIZE(devices));
}
static void __init fixup_corgi(struct machine_desc *desc,
struct tag *tags, char **cmdline, struct meminfo *mi)
{
sharpsl_save_param();
mi->nr_banks=1;
mi->bank[0].start = 0xa0000000;
mi->bank[0].node = 0;
if (machine_is_corgi())
mi->bank[0].size = (32*1024*1024);
else
mi->bank[0].size = (64*1024*1024);
}
#ifdef CONFIG_MACH_CORGI
MACHINE_START(CORGI, "SHARP Corgi")
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.fixup = fixup_corgi,
.map_io = pxa_map_io,
.init_irq = pxa_init_irq,
.init_machine = corgi_init,
.timer = &pxa_timer,
MACHINE_END
#endif
#ifdef CONFIG_MACH_SHEPHERD
MACHINE_START(SHEPHERD, "SHARP Shepherd")
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.fixup = fixup_corgi,
.map_io = pxa_map_io,
.init_irq = pxa_init_irq,
.init_machine = corgi_init,
.timer = &pxa_timer,
MACHINE_END
#endif
#ifdef CONFIG_MACH_HUSKY
MACHINE_START(HUSKY, "SHARP Husky")
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.fixup = fixup_corgi,
.map_io = pxa_map_io,
.init_irq = pxa_init_irq,
.init_machine = corgi_init,
.timer = &pxa_timer,
MACHINE_END
#endif
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