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android_kernel_motorola_sm6225/arch/arm/mach-pxa/spitz.c
Russell King 9ded96f24c [PATCH] IRQ type flags 
Some ARM platforms have the ability to program the interrupt controller to
detect various interrupt edges and/or levels.  For some platforms, this is
critical to setup correctly, particularly those which the setting is dependent
on the device.

Currently, ARM drivers do (eg) the following:

	err = request_irq(irq, ...);

	set_irq_type(irq, IRQT_RISING);

However, if the interrupt has previously been programmed to be level sensitive
(for whatever reason) then this will cause an interrupt storm.

Hence, if we combine set_irq_type() with request_irq(), we can then safely set
the type prior to unmasking the interrupt.  The unfortunate problem is that in
order to support this, these flags need to be visible outside of the ARM
architecture - drivers such as smc91x need these flags and they're
cross-architecture.

Finally, the SA_TRIGGER_* flag passed to request_irq() should reflect the
property that the device would like.  The IRQ controller code should do its
best to select the most appropriate supported mode.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:46 -08:00

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/*
* Support for Sharp SL-Cxx00 Series of PDAs
* Models: SL-C3000 (Spitz), SL-C1000 (Akita) and SL-C3100 (Borzoi)
*
* Copyright (c) 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/delay.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.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/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/irq.h>
#include <asm/arch/irda.h>
#include <asm/arch/mmc.h>
#include <asm/arch/ohci.h>
#include <asm/arch/udc.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/akita.h>
#include <asm/arch/spitz.h>
#include <asm/arch/sharpsl.h>
#include <asm/mach/sharpsl_param.h>
#include <asm/hardware/scoop.h>
#include "generic.h"
#include "sharpsl.h"
/*
* Spitz SCOOP Device #1
*/
static struct resource spitz_scoop_resources[] = {
[0] = {
.start = 0x10800000,
.end = 0x10800fff,
.flags = IORESOURCE_MEM,
},
};
static struct scoop_config spitz_scoop_setup = {
.io_dir = SPITZ_SCP_IO_DIR,
.io_out = SPITZ_SCP_IO_OUT,
.suspend_clr = SPITZ_SCP_SUS_CLR,
.suspend_set = SPITZ_SCP_SUS_SET,
};
struct platform_device spitzscoop_device = {
.name = "sharp-scoop",
.id = 0,
.dev = {
.platform_data = &spitz_scoop_setup,
},
.num_resources = ARRAY_SIZE(spitz_scoop_resources),
.resource = spitz_scoop_resources,
};
/*
* Spitz SCOOP Device #2
*/
static struct resource spitz_scoop2_resources[] = {
[0] = {
.start = 0x08800040,
.end = 0x08800fff,
.flags = IORESOURCE_MEM,
},
};
static struct scoop_config spitz_scoop2_setup = {
.io_dir = SPITZ_SCP2_IO_DIR,
.io_out = SPITZ_SCP2_IO_OUT,
.suspend_clr = SPITZ_SCP2_SUS_CLR,
.suspend_set = SPITZ_SCP2_SUS_SET,
};
struct platform_device spitzscoop2_device = {
.name = "sharp-scoop",
.id = 1,
.dev = {
.platform_data = &spitz_scoop2_setup,
},
.num_resources = ARRAY_SIZE(spitz_scoop2_resources),
.resource = spitz_scoop2_resources,
};
#define SPITZ_PWR_SD 0x01
#define SPITZ_PWR_CF 0x02
/* Power control is shared with between one of the CF slots and SD */
static void spitz_card_pwr_ctrl(int device, unsigned short new_cpr)
{
unsigned short cpr = read_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR);
if (new_cpr & 0x0007) {
set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER);
if (!(cpr & 0x0002) && !(cpr & 0x0004))
mdelay(5);
if (device == SPITZ_PWR_CF)
cpr |= 0x0002;
if (device == SPITZ_PWR_SD)
cpr |= 0x0004;
write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
} else {
if (device == SPITZ_PWR_CF)
cpr &= ~0x0002;
if (device == SPITZ_PWR_SD)
cpr &= ~0x0004;
if (!(cpr & 0x0002) && !(cpr & 0x0004)) {
write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, 0x0000);
mdelay(1);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER);
} else {
write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
}
}
}
static void spitz_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(GPIO54_nPCE_2);
GPSR(GPIO85_nPCE_1) = GPIO_bit(GPIO85_nPCE_1);
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(GPIO85_nPCE_1_MD);
pxa_gpio_mode(GPIO54_nPCE_2_MD);
pxa_gpio_mode(GPIO104_pSKTSEL_MD);
}
static void spitz_pcmcia_pwr(struct device *scoop, unsigned short cpr, int nr)
{
/* Only need to override behaviour for slot 0 */
if (nr == 0)
spitz_card_pwr_ctrl(SPITZ_PWR_CF, cpr);
else
write_scoop_reg(scoop, SCOOP_CPR, cpr);
}
static struct scoop_pcmcia_dev spitz_pcmcia_scoop[] = {
{
.dev = &spitzscoop_device.dev,
.irq = SPITZ_IRQ_GPIO_CF_IRQ,
.cd_irq = SPITZ_IRQ_GPIO_CF_CD,
.cd_irq_str = "PCMCIA0 CD",
},{
.dev = &spitzscoop2_device.dev,
.irq = SPITZ_IRQ_GPIO_CF2_IRQ,
.cd_irq = -1,
},
};
static struct scoop_pcmcia_config spitz_pcmcia_config = {
.devs = &spitz_pcmcia_scoop[0],
.num_devs = 2,
.pcmcia_init = spitz_pcmcia_init,
.power_ctrl = spitz_pcmcia_pwr,
};
EXPORT_SYMBOL(spitzscoop_device);
EXPORT_SYMBOL(spitzscoop2_device);
/*
* Spitz 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 spitzssp_device = {
.name = "corgi-ssp",
.dev = {
.parent = &spitzscoop_device.dev,
},
.id = -1,
};
struct corgissp_machinfo spitz_ssp_machinfo = {
.port = 2,
.cs_lcdcon = SPITZ_GPIO_LCDCON_CS,
.cs_ads7846 = SPITZ_GPIO_ADS7846_CS,
.cs_max1111 = SPITZ_GPIO_MAX1111_CS,
.clk_lcdcon = 520,
.clk_ads7846 = 14,
.clk_max1111 = 56,
};
/*
* Spitz Backlight Device
*/
static struct corgibl_machinfo spitz_bl_machinfo = {
.max_intensity = 0x2f,
};
static struct platform_device spitzbl_device = {
.name = "corgi-bl",
.dev = {
.platform_data = &spitz_bl_machinfo,
},
.id = -1,
};
/*
* Spitz Keyboard Device
*/
static struct platform_device spitzkbd_device = {
.name = "spitz-keyboard",
.id = -1,
};
/*
* Spitz Touch Screen Device
*/
static struct resource spitzts_resources[] = {
[0] = {
.start = SPITZ_IRQ_GPIO_TP_INT,
.end = SPITZ_IRQ_GPIO_TP_INT,
.flags = IORESOURCE_IRQ,
},
};
static struct corgits_machinfo spitz_ts_machinfo = {
.get_hsync_len = spitz_get_hsync_len,
.put_hsync = spitz_put_hsync,
.wait_hsync = spitz_wait_hsync,
};
static struct platform_device spitzts_device = {
.name = "corgi-ts",
.dev = {
.parent = &spitzssp_device.dev,
.platform_data = &spitz_ts_machinfo,
},
.id = -1,
.num_resources = ARRAY_SIZE(spitzts_resources),
.resource = spitzts_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 spitz_mci_platform_data;
static int spitz_mci_init(struct device *dev, irqreturn_t (*spitz_detect_int)(int, void *, struct pt_regs *), void *data)
{
int err;
/* setup GPIO for PXA27x MMC controller */
pxa_gpio_mode(GPIO32_MMCCLK_MD);
pxa_gpio_mode(GPIO112_MMCCMD_MD);
pxa_gpio_mode(GPIO92_MMCDAT0_MD);
pxa_gpio_mode(GPIO109_MMCDAT1_MD);
pxa_gpio_mode(GPIO110_MMCDAT2_MD);
pxa_gpio_mode(GPIO111_MMCDAT3_MD);
pxa_gpio_mode(SPITZ_GPIO_nSD_DETECT | GPIO_IN);
pxa_gpio_mode(SPITZ_GPIO_nSD_WP | GPIO_IN);
spitz_mci_platform_data.detect_delay = msecs_to_jiffies(250);
err = request_irq(SPITZ_IRQ_GPIO_nSD_DETECT, spitz_detect_int,
SA_INTERRUPT | SA_TRIGGER_RISING | SA_TRIGGER_FALLING,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "spitz_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
return -1;
}
return 0;
}
static void spitz_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
if (( 1 << vdd) & p_d->ocr_mask)
spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0004);
else
spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0000);
}
static int spitz_mci_get_ro(struct device *dev)
{
return GPLR(SPITZ_GPIO_nSD_WP) & GPIO_bit(SPITZ_GPIO_nSD_WP);
}
static void spitz_mci_exit(struct device *dev, void *data)
{
free_irq(SPITZ_IRQ_GPIO_nSD_DETECT, data);
}
static struct pxamci_platform_data spitz_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = spitz_mci_init,
.get_ro = spitz_mci_get_ro,
.setpower = spitz_mci_setpower,
.exit = spitz_mci_exit,
};
/*
* USB Host (OHCI)
*/
static int spitz_ohci_init(struct device *dev)
{
/* Only Port 2 is connected */
pxa_gpio_mode(SPITZ_GPIO_USB_CONNECT | GPIO_IN);
pxa_gpio_mode(SPITZ_GPIO_USB_HOST | GPIO_OUT);
pxa_gpio_mode(SPITZ_GPIO_USB_DEVICE | GPIO_IN);
/* Setup USB Port 2 Output Control Register */
UP2OCR = UP2OCR_HXS | UP2OCR_HXOE | UP2OCR_DPPDE | UP2OCR_DMPDE;
GPSR(SPITZ_GPIO_USB_HOST) = GPIO_bit(SPITZ_GPIO_USB_HOST);
UHCHR = (UHCHR) &
~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
UHCRHDA |= UHCRHDA_NOCP;
return 0;
}
static struct pxaohci_platform_data spitz_ohci_platform_data = {
.port_mode = PMM_NPS_MODE,
.init = spitz_ohci_init,
};
/*
* Irda
*/
static void spitz_irda_transceiver_mode(struct device *dev, int mode)
{
if (mode & IR_OFF)
set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_IR_ON);
else
reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_IR_ON);
}
#ifdef CONFIG_MACH_AKITA
static void akita_irda_transceiver_mode(struct device *dev, int mode)
{
if (mode & IR_OFF)
akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
else
akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
}
#endif
static struct pxaficp_platform_data spitz_ficp_platform_data = {
.transceiver_cap = IR_SIRMODE | IR_OFF,
.transceiver_mode = spitz_irda_transceiver_mode,
};
/*
* Spitz PXA Framebuffer
*/
static struct pxafb_mach_info spitz_pxafb_info __initdata = {
.pixclock = 19231,
.xres = 480,
.yres = 640,
.bpp = 16,
.hsync_len = 40,
.left_margin = 46,
.right_margin = 125,
.vsync_len = 3,
.upper_margin = 1,
.lower_margin = 0,
.sync = 0,
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act | LCCR0_LDDALT | LCCR0_OUC | LCCR0_CMDIM | LCCR0_RDSTM,
.lccr3 = LCCR3_PixRsEdg | LCCR3_OutEnH,
.pxafb_lcd_power = spitz_lcd_power,
};
static struct platform_device *devices[] __initdata = {
&spitzscoop_device,
&spitzssp_device,
&spitzkbd_device,
&spitzts_device,
&spitzbl_device,
};
static void __init common_init(void)
{
PMCR = 0x00;
/* 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(&spitz_ssp_machinfo);
pxa_gpio_mode(SPITZ_GPIO_HSYNC | GPIO_IN);
platform_add_devices(devices, ARRAY_SIZE(devices));
pxa_set_mci_info(&spitz_mci_platform_data);
pxa_set_ohci_info(&spitz_ohci_platform_data);
pxa_set_ficp_info(&spitz_ficp_platform_data);
set_pxa_fb_parent(&spitzssp_device.dev);
set_pxa_fb_info(&spitz_pxafb_info);
}
static void __init spitz_init(void)
{
platform_scoop_config = &spitz_pcmcia_config;
spitz_bl_machinfo.set_bl_intensity = spitz_bl_set_intensity;
common_init();
platform_device_register(&spitzscoop2_device);
}
#ifdef CONFIG_MACH_AKITA
/*
* Akita IO Expander
*/
struct platform_device akitaioexp_device = {
.name = "akita-ioexp",
.id = -1,
};
static void __init akita_init(void)
{
spitz_ficp_platform_data.transceiver_mode = akita_irda_transceiver_mode;
/* We just pretend the second element of the array doesn't exist */
spitz_pcmcia_config.num_devs = 1;
platform_scoop_config = &spitz_pcmcia_config;
spitz_bl_machinfo.set_bl_intensity = akita_bl_set_intensity;
platform_device_register(&akitaioexp_device);
spitzscoop_device.dev.parent = &akitaioexp_device.dev;
common_init();
}
#endif
static void __init fixup_spitz(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;
mi->bank[0].size = (64*1024*1024);
}
#ifdef CONFIG_MACH_SPITZ
MACHINE_START(SPITZ, "SHARP Spitz")
.phys_ram = 0xa0000000,
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.fixup = fixup_spitz,
.map_io = pxa_map_io,
.init_irq = pxa_init_irq,
.init_machine = spitz_init,
.timer = &pxa_timer,
MACHINE_END
#endif
#ifdef CONFIG_MACH_BORZOI
MACHINE_START(BORZOI, "SHARP Borzoi")
.phys_ram = 0xa0000000,
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.fixup = fixup_spitz,
.map_io = pxa_map_io,
.init_irq = pxa_init_irq,
.init_machine = spitz_init,
.timer = &pxa_timer,
MACHINE_END
#endif
#ifdef CONFIG_MACH_AKITA
MACHINE_START(AKITA, "SHARP Akita")
.phys_ram = 0xa0000000,
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.fixup = fixup_spitz,
.map_io = pxa_map_io,
.init_irq = pxa_init_irq,
.init_machine = akita_init,
.timer = &pxa_timer,
MACHINE_END
#endif
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