Banajit Goswami wrote:
>
> This patch adds support for LCD backlight using PWM timer for
> Samsung SMDK6410 board.
>
> Signed-off-by: Banajit Goswami <banajit.g@xxxxxxxxxxx>
> ---
> Changes since v1:
> - Used common GPIO macro
> - Removed redundant timers
>
> arch/arm/mach-s3c64xx/Kconfig | 1 +
> arch/arm/mach-s3c64xx/mach-smdk6410.c | 45
++++++++++++++++++++++++++++++-
> -
> 2 files changed, 44 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
> index f3a953f..e4177e2 100644
> --- a/arch/arm/mach-s3c64xx/Kconfig
> +++ b/arch/arm/mach-s3c64xx/Kconfig
> @@ -143,6 +143,7 @@ config MACH_SMDK6410
> select S3C_DEV_USB_HSOTG
> select S3C_DEV_WDT
> select SAMSUNG_DEV_KEYPAD
> + select SAMSUNG_DEV_PWM
> select HAVE_S3C2410_WATCHDOG if WATCHDOG
> select S3C64XX_SETUP_SDHCI
> select S3C64XX_SETUP_I2C1
> diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-
> s3c64xx/mach-smdk6410.c
> index e85192a..4a3fe0c 100644
> --- a/arch/arm/mach-s3c64xx/mach-smdk6410.c
> +++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c
> @@ -28,6 +28,7 @@
> #include <linux/delay.h>
> #include <linux/smsc911x.h>
> #include <linux/regulator/fixed.h>
> +#include <linux/pwm_backlight.h>
>
> #ifdef CONFIG_SMDK6410_WM1190_EV1
> #include <linux/mfd/wm8350/core.h>
> @@ -48,6 +49,7 @@
> #include <mach/hardware.h>
> #include <mach/regs-fb.h>
> #include <mach/map.h>
> +#include <mach/gpio-bank-f.h>
>
> #include <asm/irq.h>
> #include <asm/mach-types.h>
> @@ -118,7 +120,6 @@ static void smdk6410_lcd_power_set(struct
plat_lcd_data
> *pd,
> {
> if (power) {
> gpio_direction_output(S3C64XX_GPF(13), 1);
> - gpio_direction_output(S3C64XX_GPF(15), 1);
>
> /* fire nRESET on power up */
> gpio_direction_output(S3C64XX_GPN(5), 0);
> @@ -126,7 +127,6 @@ static void smdk6410_lcd_power_set(struct
plat_lcd_data
> *pd,
> gpio_direction_output(S3C64XX_GPN(5), 1);
> msleep(1);
> } else {
> - gpio_direction_output(S3C64XX_GPF(15), 0);
> gpio_direction_output(S3C64XX_GPF(13), 0);
> }
> }
> @@ -269,6 +269,45 @@ static struct samsung_keypad_platdata
> smdk6410_keypad_data __initdata = {
> .cols = 8,
> };
>
> +static int smdk6410_backlight_init(struct device *dev)
> +{
> + int ret;
> +
> + ret = gpio_request(S3C64XX_GPF(15), "Backlight");
> + if (ret) {
> + printk(KERN_ERR "failed to request GPF for PWM-OUT1\n");
> + return ret;
> + }
> +
> + /* Configure GPIO pin with S3C64XX_GPF15_PWM_TOUT1 */
> + s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
> +
> + return 0;
> +}
> +
> +static void smdk6410_backlight_exit(struct device *dev)
> +{
> + s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_OUTPUT);
> + gpio_free(S3C64XX_GPF(15));
> +}
> +
> +static struct platform_pwm_backlight_data smdk6410_backlight_data = {
> + .pwm_id = 1,
> + .max_brightness = 255,
> + .dft_brightness = 255,
> + .pwm_period_ns = 78770,
> + .init = smdk6410_backlight_init,
> + .exit = smdk6410_backlight_exit,
> +};
> +
> +static struct platform_device smdk6410_backlight_device = {
> + .name = "pwm-backlight",
> + .dev = {
> + .parent = &s3c_device_timer[1].dev,
> + .platform_data = &smdk6410_backlight_data,
> + },
> +};
> +
> static struct map_desc smdk6410_iodesc[] = {};
>
> static struct platform_device *smdk6410_devices[] __initdata = {
> @@ -298,6 +337,8 @@ static struct platform_device *smdk6410_devices[]
> __initdata = {
> &s3c_device_rtc,
> &s3c_device_ts,
> &s3c_device_wdt,
> + &s3c_device_timer[1],
> + &smdk6410_backlight_device,
> };
>
> #ifdef CONFIG_REGULATOR
> @@ -693,7 +735,6 @@ static void __init smdk6410_machine_init(void)
>
> gpio_request(S3C64XX_GPN(5), "LCD power");
> gpio_request(S3C64XX_GPF(13), "LCD power");
> - gpio_request(S3C64XX_GPF(15), "LCD power");
>
> i2c_register_board_info(0, i2c_devs0, ARRAY_SIZE(i2c_devs0));
> i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1));
> --
> 1.6.5.2
Ok, applied with others. (your PWM backlight patch-set (#1 to #6))
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
