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linux/arch/arm/mach-s3c2410/mach-h1940.c
Naveen Krishna 5bfdca146e ARM: SAMSUNG: Implements cfg_gpio function for Samsung touchscreen 
This patch implements cfg_gpio function for Samsung touchscreen.
And also modifies the H1940 machine respectively.

Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-19 18:25:22 +09:00

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7.9 KiB
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/* linux/arch/arm/mach-s3c2410/mach-h1940.c
*
* Copyright (c) 2003-2005 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* http://www.handhelds.org/projects/h1940.html
*
* 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/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/sysdev.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/pwm_backlight.h>
#include <video/platform_lcd.h>
#include <linux/mmc/host.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <plat/regs-serial.h>
#include <mach/regs-lcd.h>
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
#include <mach/gpio-fns.h>
#include <mach/gpio-nrs.h>
#include <mach/h1940.h>
#include <mach/h1940-latch.h>
#include <mach/fb.h>
#include <plat/udc.h>
#include <plat/iic.h>
#include <plat/gpio-cfg.h>
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/pm.h>
#include <plat/mci.h>
#include <plat/ts.h>
static struct map_desc h1940_iodesc[] __initdata = {
[0] = {
.virtual = (unsigned long)H1940_LATCH,
.pfn = __phys_to_pfn(H1940_PA_LATCH),
.length = SZ_16K,
.type = MT_DEVICE
},
};
#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
[0] = {
.hwport = 0,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x03,
.ufcon = 0x51,
},
[1] = {
.hwport = 1,
.flags = 0,
.ucon = 0x245,
.ulcon = 0x03,
.ufcon = 0x00,
},
/* IR port */
[2] = {
.hwport = 2,
.flags = 0,
.uart_flags = UPF_CONS_FLOW,
.ucon = 0x3c5,
.ulcon = 0x43,
.ufcon = 0x51,
}
};
/* Board control latch control */
static unsigned int latch_state = H1940_LATCH_DEFAULT;
void h1940_latch_control(unsigned int clear, unsigned int set)
{
unsigned long flags;
local_irq_save(flags);
latch_state &= ~clear;
latch_state |= set;
__raw_writel(latch_state, H1940_LATCH);
local_irq_restore(flags);
}
EXPORT_SYMBOL_GPL(h1940_latch_control);
static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
{
printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
switch (cmd)
{
case S3C2410_UDC_P_ENABLE :
h1940_latch_control(0, H1940_LATCH_USB_DP);
break;
case S3C2410_UDC_P_DISABLE :
h1940_latch_control(H1940_LATCH_USB_DP, 0);
break;
case S3C2410_UDC_P_RESET :
break;
default:
break;
}
}
static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
.udc_command = h1940_udc_pullup,
.vbus_pin = S3C2410_GPG(5),
.vbus_pin_inverted = 1,
};
static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
.delay = 10000,
.presc = 49,
.oversampling_shift = 2,
.cfg_gpio = s3c24xx_ts_cfg_gpio,
};
/**
* Set lcd on or off
**/
static struct s3c2410fb_display h1940_lcd __initdata = {
.lcdcon5= S3C2410_LCDCON5_FRM565 | \
S3C2410_LCDCON5_INVVLINE | \
S3C2410_LCDCON5_HWSWP,
.type = S3C2410_LCDCON1_TFT,
.width = 240,
.height = 320,
.pixclock = 260000,
.xres = 240,
.yres = 320,
.bpp = 16,
.left_margin = 8,
.right_margin = 20,
.hsync_len = 4,
.upper_margin = 8,
.lower_margin = 7,
.vsync_len = 1,
};
static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
.displays = &h1940_lcd,
.num_displays = 1,
.default_display = 0,
.lpcsel= 0x02,
.gpccon= 0xaa940659,
.gpccon_mask= 0xffffffff,
.gpcup= 0x0000ffff,
.gpcup_mask= 0xffffffff,
.gpdcon= 0xaa84aaa0,
.gpdcon_mask= 0xffffffff,
.gpdup= 0x0000faff,
.gpdup_mask= 0xffffffff,
};
static struct platform_device h1940_device_leds = {
.name = "h1940-leds",
.id = -1,
};
static struct platform_device h1940_device_bluetooth = {
.name = "h1940-bt",
.id = -1,
};
static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
.gpio_detect = S3C2410_GPF(5),
.gpio_wprotect = S3C2410_GPH(8),
.set_power = NULL,
.ocr_avail = MMC_VDD_32_33,
};
static int h1940_backlight_init(struct device *dev)
{
gpio_request(S3C2410_GPB(0), "Backlight");
gpio_direction_output(S3C2410_GPB(0), 0);
s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
return 0;
}
static void h1940_backlight_exit(struct device *dev)
{
gpio_direction_output(S3C2410_GPB(0), 1);
}
static struct platform_pwm_backlight_data backlight_data = {
.pwm_id = 0,
.max_brightness = 100,
.dft_brightness = 50,
/* tcnt = 0x31 */
.pwm_period_ns = 36296,
.init = h1940_backlight_init,
.exit = h1940_backlight_exit,
};
static struct platform_device h1940_backlight = {
.name = "pwm-backlight",
.dev = {
.parent = &s3c_device_timer[0].dev,
.platform_data = &backlight_data,
},
.id = -1,
};
static void h1940_lcd_power_set(struct plat_lcd_data *pd,
unsigned int power)
{
int value;
if (!power) {
/* set to 3ec */
gpio_direction_output(S3C2410_GPC(0), 0);
/* wait for 3ac */
do {
value = gpio_get_value(S3C2410_GPC(6));
} while (value);
/* set to 38c */
gpio_direction_output(S3C2410_GPC(5), 0);
} else {
/* Set to 3ac */
gpio_direction_output(S3C2410_GPC(5), 1);
/* Set to 3ad */
gpio_direction_output(S3C2410_GPC(0), 1);
}
}
static struct plat_lcd_data h1940_lcd_power_data = {
.set_power = h1940_lcd_power_set,
};
static struct platform_device h1940_lcd_powerdev = {
.name = "platform-lcd",
.dev.parent = &s3c_device_lcd.dev,
.dev.platform_data = &h1940_lcd_power_data,
};
static struct platform_device *h1940_devices[] __initdata = {
&s3c_device_ohci,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
&s3c_device_usbgadget,
&h1940_device_leds,
&h1940_device_bluetooth,
&s3c_device_sdi,
&s3c_device_rtc,
&s3c_device_timer[0],
&h1940_backlight,
&h1940_lcd_powerdev,
&s3c_device_adc,
&s3c_device_ts,
};
static void __init h1940_map_io(void)
{
s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
s3c24xx_init_clocks(0);
s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
/* setup PM */
#ifdef CONFIG_PM_H1940
memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
#endif
s3c_pm_init();
}
static void __init h1940_init_irq(void)
{
s3c24xx_init_irq();
}
static void __init h1940_init(void)
{
u32 tmp;
s3c24xx_fb_set_platdata(&h1940_fb_info);
s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
s3c24xx_udc_set_platdata(&h1940_udc_cfg);
s3c24xx_ts_set_platdata(&h1940_ts_cfg);
s3c_i2c0_set_platdata(NULL);
/* Turn off suspend on both USB ports, and switch the
* selectable USB port to USB device mode. */
s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
S3C2410_MISCCR_USBSUSPND0 |
S3C2410_MISCCR_USBSUSPND1, 0x0);
tmp = (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
| (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
| (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
writel(tmp, S3C2410_UPLLCON);
gpio_request(S3C2410_GPC(0), "LCD power");
gpio_request(S3C2410_GPC(5), "LCD power");
gpio_request(S3C2410_GPC(6), "LCD power");
gpio_direction_input(S3C2410_GPC(6));
platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
}
MACHINE_START(H1940, "IPAQ-H1940")
/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
.phys_io = S3C2410_PA_UART,
.io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
.boot_params = S3C2410_SDRAM_PA + 0x100,
.map_io = h1940_map_io,
.init_irq = h1940_init_irq,
.init_machine = h1940_init,
.timer = &s3c24xx_timer,
MACHINE_END
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