baa0c06093
This patch adds support for LCD backlight using PWM timer for Samsung SMDKC100 board. Signed-off-by: Banajit Goswami <banajit.g@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
289 lines
7 KiB
C
289 lines
7 KiB
C
/* linux/arch/arm/mach-s5pc100/mach-smdkc100.c
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*
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* Copyright 2009 Samsung Electronics Co.
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* Author: Byungho Min <bhmin@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/serial_core.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/fb.h>
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/pwm_backlight.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/map.h>
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#include <mach/regs-fb.h>
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#include <mach/regs-gpio.h>
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#include <video/platform_lcd.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <plat/regs-serial.h>
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#include <plat/gpio-cfg.h>
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#include <plat/clock.h>
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#include <plat/devs.h>
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#include <plat/cpu.h>
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#include <plat/s5pc100.h>
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#include <plat/fb.h>
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#include <plat/iic.h>
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#include <plat/ata.h>
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#include <plat/adc.h>
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#include <plat/keypad.h>
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#include <plat/ts.h>
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#include <plat/audio.h>
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/* Following are default values for UCON, ULCON and UFCON UART registers */
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#define SMDKC100_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
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S3C2410_UCON_RXILEVEL | \
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S3C2410_UCON_TXIRQMODE | \
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S3C2410_UCON_RXIRQMODE | \
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S3C2410_UCON_RXFIFO_TOI | \
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S3C2443_UCON_RXERR_IRQEN)
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#define SMDKC100_ULCON_DEFAULT S3C2410_LCON_CS8
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#define SMDKC100_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \
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S3C2440_UFCON_RXTRIG8 | \
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S3C2440_UFCON_TXTRIG16)
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static struct s3c2410_uartcfg smdkc100_uartcfgs[] __initdata = {
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[0] = {
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.hwport = 0,
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.flags = 0,
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.ucon = SMDKC100_UCON_DEFAULT,
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.ulcon = SMDKC100_ULCON_DEFAULT,
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.ufcon = SMDKC100_UFCON_DEFAULT,
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},
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[1] = {
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.hwport = 1,
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.flags = 0,
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.ucon = SMDKC100_UCON_DEFAULT,
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.ulcon = SMDKC100_ULCON_DEFAULT,
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.ufcon = SMDKC100_UFCON_DEFAULT,
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},
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[2] = {
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.hwport = 2,
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.flags = 0,
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.ucon = SMDKC100_UCON_DEFAULT,
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.ulcon = SMDKC100_ULCON_DEFAULT,
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.ufcon = SMDKC100_UFCON_DEFAULT,
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},
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[3] = {
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.hwport = 3,
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.flags = 0,
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.ucon = SMDKC100_UCON_DEFAULT,
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.ulcon = SMDKC100_ULCON_DEFAULT,
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.ufcon = SMDKC100_UFCON_DEFAULT,
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},
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};
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/* I2C0 */
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static struct i2c_board_info i2c_devs0[] __initdata = {
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{I2C_BOARD_INFO("wm8580", 0x1b),},
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};
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/* I2C1 */
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static struct i2c_board_info i2c_devs1[] __initdata = {
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};
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/* LCD power controller */
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static void smdkc100_lcd_power_set(struct plat_lcd_data *pd,
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unsigned int power)
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{
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if (power) {
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/* module reset */
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gpio_direction_output(S5PC100_GPH0(6), 1);
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mdelay(100);
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gpio_direction_output(S5PC100_GPH0(6), 0);
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mdelay(10);
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gpio_direction_output(S5PC100_GPH0(6), 1);
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mdelay(10);
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}
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}
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static struct plat_lcd_data smdkc100_lcd_power_data = {
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.set_power = smdkc100_lcd_power_set,
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};
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static struct platform_device smdkc100_lcd_powerdev = {
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.name = "platform-lcd",
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.dev.parent = &s3c_device_fb.dev,
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.dev.platform_data = &smdkc100_lcd_power_data,
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};
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/* Frame Buffer */
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static struct s3c_fb_pd_win smdkc100_fb_win0 = {
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/* this is to ensure we use win0 */
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.win_mode = {
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.left_margin = 8,
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.right_margin = 13,
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.upper_margin = 7,
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.lower_margin = 5,
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.hsync_len = 3,
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.vsync_len = 1,
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.xres = 800,
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.yres = 480,
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.refresh = 80,
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},
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.max_bpp = 32,
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.default_bpp = 16,
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};
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static struct s3c_fb_platdata smdkc100_lcd_pdata __initdata = {
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.win[0] = &smdkc100_fb_win0,
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.vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
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.vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
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.setup_gpio = s5pc100_fb_gpio_setup_24bpp,
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};
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static struct s3c_ide_platdata smdkc100_ide_pdata __initdata = {
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.setup_gpio = s5pc100_ide_setup_gpio,
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};
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static uint32_t smdkc100_keymap[] __initdata = {
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/* KEY(row, col, keycode) */
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KEY(0, 3, KEY_1), KEY(0, 4, KEY_2), KEY(0, 5, KEY_3),
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KEY(0, 6, KEY_4), KEY(0, 7, KEY_5),
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KEY(1, 3, KEY_A), KEY(1, 4, KEY_B), KEY(1, 5, KEY_C),
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KEY(1, 6, KEY_D), KEY(1, 7, KEY_E)
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};
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static struct matrix_keymap_data smdkc100_keymap_data __initdata = {
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.keymap = smdkc100_keymap,
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.keymap_size = ARRAY_SIZE(smdkc100_keymap),
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};
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static struct samsung_keypad_platdata smdkc100_keypad_data __initdata = {
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.keymap_data = &smdkc100_keymap_data,
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.rows = 2,
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.cols = 8,
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};
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static int smdkc100_backlight_init(struct device *dev)
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{
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int ret;
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ret = gpio_request(S5PC100_GPD(0), "Backlight");
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if (ret) {
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printk(KERN_ERR "failed to request GPF for PWM-OUT0\n");
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return ret;
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}
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/* Configure GPIO pin with S5PC100_GPD_TOUT_0 */
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s3c_gpio_cfgpin(S5PC100_GPD(0), S3C_GPIO_SFN(2));
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return 0;
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}
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static void smdkc100_backlight_exit(struct device *dev)
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{
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s3c_gpio_cfgpin(S5PC100_GPD(0), S3C_GPIO_OUTPUT);
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gpio_free(S5PC100_GPD(0));
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}
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static struct platform_pwm_backlight_data smdkc100_backlight_data = {
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.pwm_id = 0,
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.max_brightness = 255,
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.dft_brightness = 255,
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.pwm_period_ns = 78770,
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.init = smdkc100_backlight_init,
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.exit = smdkc100_backlight_exit,
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};
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static struct platform_device smdkc100_backlight_device = {
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.name = "pwm-backlight",
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.dev = {
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.parent = &s3c_device_timer[0].dev,
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.platform_data = &smdkc100_backlight_data,
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},
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};
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static struct platform_device *smdkc100_devices[] __initdata = {
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&s3c_device_adc,
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&s3c_device_cfcon,
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&s3c_device_i2c0,
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&s3c_device_i2c1,
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&s3c_device_fb,
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&s3c_device_hsmmc0,
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&s3c_device_hsmmc1,
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&s3c_device_hsmmc2,
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&s3c_device_ts,
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&s3c_device_wdt,
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&smdkc100_lcd_powerdev,
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&samsung_asoc_dma,
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&s5pc100_device_iis0,
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&samsung_device_keypad,
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&s5pc100_device_ac97,
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&s3c_device_rtc,
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&s5p_device_fimc0,
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&s5p_device_fimc1,
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&s5p_device_fimc2,
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&s5pc100_device_spdif,
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&s3c_device_timer[0],
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&smdkc100_backlight_device,
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};
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static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
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.delay = 10000,
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.presc = 49,
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.oversampling_shift = 2,
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};
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static void __init smdkc100_map_io(void)
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{
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s5p_init_io(NULL, 0, S5P_VA_CHIPID);
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s3c24xx_init_clocks(12000000);
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s3c24xx_init_uarts(smdkc100_uartcfgs, ARRAY_SIZE(smdkc100_uartcfgs));
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}
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static void __init smdkc100_machine_init(void)
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{
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s3c24xx_ts_set_platdata(&s3c_ts_platform);
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/* I2C */
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s3c_i2c0_set_platdata(NULL);
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s3c_i2c1_set_platdata(NULL);
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i2c_register_board_info(0, i2c_devs0, ARRAY_SIZE(i2c_devs0));
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i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1));
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s3c_fb_set_platdata(&smdkc100_lcd_pdata);
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s3c_ide_set_platdata(&smdkc100_ide_pdata);
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samsung_keypad_set_platdata(&smdkc100_keypad_data);
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s5pc100_spdif_setup_gpio(S5PC100_SPDIF_GPD);
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/* LCD init */
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gpio_request(S5PC100_GPH0(6), "GPH0");
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smdkc100_lcd_power_set(&smdkc100_lcd_power_data, 0);
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platform_add_devices(smdkc100_devices, ARRAY_SIZE(smdkc100_devices));
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}
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MACHINE_START(SMDKC100, "SMDKC100")
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/* Maintainer: Byungho Min <bhmin@samsung.com> */
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.boot_params = S5P_PA_SDRAM + 0x100,
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.init_irq = s5pc100_init_irq,
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.map_io = smdkc100_map_io,
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.init_machine = smdkc100_machine_init,
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.timer = &s3c24xx_timer,
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MACHINE_END
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