This patch adds support for LCD backlight using PWM timer for
Samsung SMDKV210 board.
Signed-off-by: Banajit Goswami <banaji...@samsung.com>
---
arch/arm/mach-s5pv210/Kconfig | 1 +
arch/arm/mach-s5pv210/mach-smdkv210.c | 54 ++++++++-------------------------
2 files changed, 14 insertions(+), 41 deletions(-)
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index 37b5a97..79bb3a0 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -134,6 +134,7 @@ config MACH_SMDKV210
select S3C_DEV_RTC
select S3C_DEV_WDT
select SAMSUNG_DEV_ADC
+ select SAMSUNG_DEV_BACKLIGHT
select SAMSUNG_DEV_IDE
select SAMSUNG_DEV_KEYPAD
select SAMSUNG_DEV_PWM
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210.c
b/arch/arm/mach-s5pv210/mach-smdkv210.c
index c6a9e86..c4d9b7d 100644
--- a/arch/arm/mach-s5pv210/mach-smdkv210.c
+++ b/arch/arm/mach-s5pv210/mach-smdkv210.c
@@ -45,6 +45,7 @@
#include <plat/pm.h>
#include <plat/fb.h>
#include <plat/s5p-time.h>
+#include <plat/backlight.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDKV210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
@@ -210,45 +211,6 @@ static struct s3c_fb_platdata smdkv210_lcd0_pdata
__initdata = {
.setup_gpio = s5pv210_fb_gpio_setup_24bpp,
};
-static int smdkv210_backlight_init(struct device *dev)
-{
- int ret;
-
- ret = gpio_request(S5PV210_GPD0(3), "Backlight");
- if (ret) {
- printk(KERN_ERR "failed to request GPD for PWM-OUT 3\n");
- return ret;
- }
-
- /* Configure GPIO pin with S5PV210_GPD_0_3_TOUT_3 */
- s3c_gpio_cfgpin(S5PV210_GPD0(3), S3C_GPIO_SFN(2));
-
- return 0;
-}
-
-static void smdkv210_backlight_exit(struct device *dev)
-{
- s3c_gpio_cfgpin(S5PV210_GPD0(3), S3C_GPIO_OUTPUT);
- gpio_free(S5PV210_GPD0(3));
-}
-
-static struct platform_pwm_backlight_data smdkv210_backlight_data = {
- .pwm_id = 3,
- .max_brightness = 255,
- .dft_brightness = 255,
- .pwm_period_ns = 78770,
- .init = smdkv210_backlight_init,
- .exit = smdkv210_backlight_exit,
-};
-
-static struct platform_device smdkv210_backlight_device = {
- .name = "pwm-backlight",
- .dev = {
- .parent = &s3c_device_timer[3].dev,
- .platform_data = &smdkv210_backlight_data,
- },
-};
-
static struct platform_device *smdkv210_devices[] __initdata = {
&s3c_device_adc,
&s3c_device_cfcon,
@@ -270,8 +232,6 @@ static struct platform_device *smdkv210_devices[]
__initdata = {
&samsung_device_keypad,
&smdkv210_dm9000,
&smdkv210_lcd_lte480wv,
- &s3c_device_timer[3],
- &smdkv210_backlight_device,
};
static void __init smdkv210_dm9000_init(void)
@@ -310,6 +270,16 @@ static struct s3c2410_ts_mach_info s3c_ts_platform
__initdata = {
.oversampling_shift = 2,
};
+/* 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,
+};
+
static void __init smdkv210_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
@@ -341,6 +311,8 @@ static void __init smdkv210_machine_init(void)
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));
}
--
1.7.2.3
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
