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linux/arch/arm/mach-s5pv210/mach-smdkv210.c
Jingoo Han de611dd407 ARM: S5PV210: Set 1000ns as PWM backlight period on SMDKV210 
The SMDK board uses LT3591 as backlight LED driver of LTE480WV LCD.
According to the LT3591 datasheet, the switching frequency should
be 1MHz. So, PWM period is calculated by following formula:

PWM period = 1/switching frequency
	   = 1/1MHz
	   = 1000ns

Thus, the PWM backlight period should be 1000ns.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-12-08 10:09:30 +09:00

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/* linux/arch/arm/mach-s5pv210/mach-smdkv210.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* 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/i2c.h>
#include <linux/init.h>
#include <linux/serial_core.h>
#include <linux/sysdev.h>
#include <linux/dm9000.h>
#include <linux/fb.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/pwm_backlight.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <video/platform_lcd.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <plat/regs-serial.h>
#include <plat/regs-srom.h>
#include <plat/gpio-cfg.h>
#include <plat/s5pv210.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/adc.h>
#include <plat/ts.h>
#include <plat/ata.h>
#include <plat/iic.h>
#include <plat/keypad.h>
#include <plat/pm.h>
#include <plat/fb.h>
#include <plat/s5p-time.h>
#include <plat/backlight.h>
#include <plat/regs-fb-v4.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDKV210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
S3C2410_UCON_TXIRQMODE | \
S3C2410_UCON_RXIRQMODE | \
S3C2410_UCON_RXFIFO_TOI | \
S3C2443_UCON_RXERR_IRQEN)
#define SMDKV210_ULCON_DEFAULT S3C2410_LCON_CS8
#define SMDKV210_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \
S5PV210_UFCON_TXTRIG4 | \
S5PV210_UFCON_RXTRIG4)
static struct s3c2410_uartcfg smdkv210_uartcfgs[] __initdata = {
[0] = {
.hwport = 0,
.flags = 0,
.ucon = SMDKV210_UCON_DEFAULT,
.ulcon = SMDKV210_ULCON_DEFAULT,
.ufcon = SMDKV210_UFCON_DEFAULT,
},
[1] = {
.hwport = 1,
.flags = 0,
.ucon = SMDKV210_UCON_DEFAULT,
.ulcon = SMDKV210_ULCON_DEFAULT,
.ufcon = SMDKV210_UFCON_DEFAULT,
},
[2] = {
.hwport = 2,
.flags = 0,
.ucon = SMDKV210_UCON_DEFAULT,
.ulcon = SMDKV210_ULCON_DEFAULT,
.ufcon = SMDKV210_UFCON_DEFAULT,
},
[3] = {
.hwport = 3,
.flags = 0,
.ucon = SMDKV210_UCON_DEFAULT,
.ulcon = SMDKV210_ULCON_DEFAULT,
.ufcon = SMDKV210_UFCON_DEFAULT,
},
};
static struct s3c_ide_platdata smdkv210_ide_pdata __initdata = {
.setup_gpio = s5pv210_ide_setup_gpio,
};
static uint32_t smdkv210_keymap[] __initdata = {
/* KEY(row, col, keycode) */
KEY(0, 3, KEY_1), KEY(0, 4, KEY_2), KEY(0, 5, KEY_3),
KEY(0, 6, KEY_4), KEY(0, 7, KEY_5),
KEY(1, 3, KEY_A), KEY(1, 4, KEY_B), KEY(1, 5, KEY_C),
KEY(1, 6, KEY_D), KEY(1, 7, KEY_E)
};
static struct matrix_keymap_data smdkv210_keymap_data __initdata = {
.keymap = smdkv210_keymap,
.keymap_size = ARRAY_SIZE(smdkv210_keymap),
};
static struct samsung_keypad_platdata smdkv210_keypad_data __initdata = {
.keymap_data = &smdkv210_keymap_data,
.rows = 8,
.cols = 8,
};
static struct resource smdkv210_dm9000_resources[] = {
[0] = {
.start = S5PV210_PA_SROM_BANK5,
.end = S5PV210_PA_SROM_BANK5,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = S5PV210_PA_SROM_BANK5 + 2,
.end = S5PV210_PA_SROM_BANK5 + 2,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = IRQ_EINT(9),
.end = IRQ_EINT(9),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
},
};
static struct dm9000_plat_data smdkv210_dm9000_platdata = {
.flags = DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM,
.dev_addr = { 0x00, 0x09, 0xc0, 0xff, 0xec, 0x48 },
};
struct platform_device smdkv210_dm9000 = {
.name = "dm9000",
.id = -1,
.num_resources = ARRAY_SIZE(smdkv210_dm9000_resources),
.resource = smdkv210_dm9000_resources,
.dev = {
.platform_data = &smdkv210_dm9000_platdata,
},
};
static void smdkv210_lte480wv_set_power(struct plat_lcd_data *pd,
unsigned int power)
{
if (power) {
#if !defined(CONFIG_BACKLIGHT_PWM)
gpio_request(S5PV210_GPD0(3), "GPD0");
gpio_direction_output(S5PV210_GPD0(3), 1);
gpio_free(S5PV210_GPD0(3));
#endif
/* fire nRESET on power up */
gpio_request(S5PV210_GPH0(6), "GPH0");
gpio_direction_output(S5PV210_GPH0(6), 1);
gpio_set_value(S5PV210_GPH0(6), 0);
mdelay(10);
gpio_set_value(S5PV210_GPH0(6), 1);
mdelay(10);
gpio_free(S5PV210_GPH0(6));
} else {
#if !defined(CONFIG_BACKLIGHT_PWM)
gpio_request(S5PV210_GPD0(3), "GPD0");
gpio_direction_output(S5PV210_GPD0(3), 0);
gpio_free(S5PV210_GPD0(3));
#endif
}
}
static struct plat_lcd_data smdkv210_lcd_lte480wv_data = {
.set_power = smdkv210_lte480wv_set_power,
};
static struct platform_device smdkv210_lcd_lte480wv = {
.name = "platform-lcd",
.dev.parent = &s3c_device_fb.dev,
.dev.platform_data = &smdkv210_lcd_lte480wv_data,
};
static struct s3c_fb_pd_win smdkv210_fb_win0 = {
.win_mode = {
.left_margin = 13,
.right_margin = 8,
.upper_margin = 7,
.lower_margin = 5,
.hsync_len = 3,
.vsync_len = 1,
.xres = 800,
.yres = 480,
},
.max_bpp = 32,
.default_bpp = 24,
};
static struct s3c_fb_platdata smdkv210_lcd0_pdata __initdata = {
.win[0] = &smdkv210_fb_win0,
.vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
.vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
.setup_gpio = s5pv210_fb_gpio_setup_24bpp,
};
static struct platform_device *smdkv210_devices[] __initdata = {
&s3c_device_adc,
&s3c_device_cfcon,
&s3c_device_fb,
&s3c_device_hsmmc0,
&s3c_device_hsmmc1,
&s3c_device_hsmmc2,
&s3c_device_hsmmc3,
&s3c_device_i2c0,
&s3c_device_i2c1,
&s3c_device_i2c2,
&s3c_device_rtc,
&s3c_device_ts,
&s3c_device_wdt,
&s5pv210_device_ac97,
&s5pv210_device_iis0,
&s5pv210_device_spdif,
&samsung_asoc_dma,
&samsung_asoc_idma,
&samsung_device_keypad,
&smdkv210_dm9000,
&smdkv210_lcd_lte480wv,
};
static void __init smdkv210_dm9000_init(void)
{
unsigned int tmp;
gpio_request(S5PV210_MP01(5), "nCS5");
s3c_gpio_cfgpin(S5PV210_MP01(5), S3C_GPIO_SFN(2));
gpio_free(S5PV210_MP01(5));
tmp = (5 << S5P_SROM_BCX__TACC__SHIFT);
__raw_writel(tmp, S5P_SROM_BC5);
tmp = __raw_readl(S5P_SROM_BW);
tmp &= (S5P_SROM_BW__CS_MASK << S5P_SROM_BW__NCS5__SHIFT);
tmp |= (1 << S5P_SROM_BW__NCS5__SHIFT);
__raw_writel(tmp, S5P_SROM_BW);
}
static struct i2c_board_info smdkv210_i2c_devs0[] __initdata = {
{ I2C_BOARD_INFO("24c08", 0x50), }, /* Samsung S524AD0XD1 */
{ I2C_BOARD_INFO("wm8580", 0x1b), },
};
static struct i2c_board_info smdkv210_i2c_devs1[] __initdata = {
/* To Be Updated */
};
static struct i2c_board_info smdkv210_i2c_devs2[] __initdata = {
/* To Be Updated */
};
/* LCD Backlight data */
static struct samsung_bl_gpio_info smdkv210_bl_gpio_info = {
.no = S5PV210_GPD0(3),
.func = S3C_GPIO_SFN(2),
};
static struct platform_pwm_backlight_data smdkv210_bl_data = {
.pwm_id = 3,
.pwm_period_ns = 1000,
};
static void __init smdkv210_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
s3c24xx_init_clocks(24000000);
s3c24xx_init_uarts(smdkv210_uartcfgs, ARRAY_SIZE(smdkv210_uartcfgs));
s5p_set_timer_source(S5P_PWM2, S5P_PWM4);
}
static void __init smdkv210_machine_init(void)
{
s3c_pm_init();
smdkv210_dm9000_init();
samsung_keypad_set_platdata(&smdkv210_keypad_data);
s3c24xx_ts_set_platdata(NULL);
s3c_i2c0_set_platdata(NULL);
s3c_i2c1_set_platdata(NULL);
s3c_i2c2_set_platdata(NULL);
i2c_register_board_info(0, smdkv210_i2c_devs0,
ARRAY_SIZE(smdkv210_i2c_devs0));
i2c_register_board_info(1, smdkv210_i2c_devs1,
ARRAY_SIZE(smdkv210_i2c_devs1));
i2c_register_board_info(2, smdkv210_i2c_devs2,
ARRAY_SIZE(smdkv210_i2c_devs2));
s3c_ide_set_platdata(&smdkv210_ide_pdata);
s3c_fb_set_platdata(&smdkv210_lcd0_pdata);
samsung_bl_set(&smdkv210_bl_gpio_info, &smdkv210_bl_data);
platform_add_devices(smdkv210_devices, ARRAY_SIZE(smdkv210_devices));
}
MACHINE_START(SMDKV210, "SMDKV210")
/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
.atag_offset = 0x100,
.init_irq = s5pv210_init_irq,
.map_io = smdkv210_map_io,
.init_machine = smdkv210_machine_init,
.timer = &s5p_timer,
MACHINE_END
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