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linux-sg2042/arch/arm/mach-pxa/mainstone.c

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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 <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/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 <asm/arch/pxa-regs.h>
#include <asm/arch/mainstone.h>
#include <asm/arch/audio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>
#include <asm/arch/irda.h>
#include "generic.h"
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 irqchip mainstone_irq_chip = {
.ack = mainstone_mask_irq,
.mask = mainstone_mask_irq,
.unmask = mainstone_unmask_irq,
};
static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
struct pt_regs *regs)
{
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);
desc = irq_desc + irq;
desc_handle_irq(irq, desc, regs);
}
pending = MST_INTSETCLR & mainstone_irq_enabled;
} while (pending);
}
static void __init mainstone_init_irq(void)
{
int irq;
pxa_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, do_level_IRQ);
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), IRQT_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 = {
set_kset_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 = 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,
}
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
};
static int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
{
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
return 0;
}
static void mst_audio_shutdown(snd_pcm_substream_t *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 platform_device mst_audio_device = {
.name = "pxa2xx-ac97",
.id = -1,
.dev = { .platform_data = &mst_audio_ops },
};
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,
},
};
static void mainstone_backlight_power(int on)
{
if (on) {
pxa_gpio_mode(GPIO16_PWM0_MD);
pxa_set_cken(CKEN0_PWM0, 1);
PWM_CTRL0 = 0;
PWM_PWDUTY0 = 0x3ff;
PWM_PERVAL0 = 0x3ff;
} else {
PWM_CTRL0 = 0;
PWM_PWDUTY0 = 0x0;
PWM_PERVAL0 = 0x3FF;
pxa_set_cken(CKEN0_PWM0, 0);
}
}
static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
.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,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP,
.pxafb_backlight_power = mainstone_backlight_power,
};
static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
.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,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP,
.pxafb_backlight_power = mainstone_backlight_power,
};
static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_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);
/* 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, SA_INTERRUPT,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
return -1;
}
return 0;
}
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", __FUNCTION__);
MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
} else {
printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
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,
};
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;
}
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 = {
.transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
.transceiver_mode = mainstone_irda_transceiver_mode,
};
static struct platform_device *platform_devices[] __initdata = {
&smc91x_device,
&mst_audio_device,
&mst_flash_device[0],
&mst_flash_device[1],
};
static void __init mainstone_init(void)
{
int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
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);
/*
* On Mainstone, we route AC97_SYSCLK via GPIO45 to
* the audio daughter card
*/
pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
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)
set_pxa_fb_info(&toshiba_ltm04c380k);
else
set_pxa_fb_info(&toshiba_ltm035a776c);
pxa_set_mci_info(&mainstone_mci_platform_data);
pxa_set_ficp_info(&mainstone_ficp_platform_data);
}
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));
/* initialize sleep mode regs (wake-up sources, etc) */
PGSR0 = 0x00008800;
PGSR1 = 0x00000002;
PGSR2 = 0x0001FC00;
PGSR3 = 0x00001F81;
PWER = 0xC0000002;
PRER = 0x00000002;
PFER = 0x00000002;
/* for use I SRAM as framebuffer. */
PSLR |= 0xF04;
PCFR = 0x66;
/* For Keypad wakeup. */
KPC &=~KPC_ASACT;
KPC |=KPC_AS;
PKWR = 0x000FD000;
/* Need read PKWR back after set it. */
PKWR;
}
MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
/* Maintainer: MontaVista Software Inc. */
.phys_ram = 0xa0000000,
.phys_io = 0x40000000,
.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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