From 2ce30137094969123a8846ca4f68c2628ea4a658 Mon Sep 17 00:00:00 2001 From: Banajit Goswami Date: Mon, 28 Feb 2011 22:24:51 +0530 Subject: ARM: SAMSUNG: Move PWM device definition from plat-s3c24xx to plat-samsung This patch does the following:- 1. It moves file pwm.c from plat-s3c24xx to plat-samsung. This will enable all machines with Samsung SoCs to make use of the same code. 2. The device definitions have been separated to a new file dev-pwm.c for better clarity and structure. 3. It will enable all Samsung S3C and S5P series SoC's to use common PWM Kconfig definition. Signed-off-by: Banajit Goswami Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c64xx/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-s3c64xx') diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig index 579d2f0f4dd..f3a953f02dd 100644 --- a/arch/arm/mach-s3c64xx/Kconfig +++ b/arch/arm/mach-s3c64xx/Kconfig @@ -231,7 +231,7 @@ config MACH_HMT select S3C_DEV_NAND select S3C_DEV_USB_HOST select S3C64XX_SETUP_FB_24BPP - select HAVE_PWM + select SAMSUNG_DEV_PWM help Machine support for the Airgoo HMT @@ -249,8 +249,8 @@ config MACH_SMARTQ select S3C64XX_SETUP_SDHCI select S3C64XX_SETUP_FB_24BPP select SAMSUNG_DEV_ADC + select SAMSUNG_DEV_PWM select SAMSUNG_DEV_TS - select HAVE_PWM help Shared machine support for SmartQ 5/7 -- cgit v1.2.3-70-g09d2 From 075d108989f71e6c7c287c258ebc3faf53066458 Mon Sep 17 00:00:00 2001 From: Banajit Goswami Date: Mon, 28 Feb 2011 17:42:35 +0530 Subject: ARM: SAMSUNG: Add PWM backlight support on Samsung S3C6410 This patch adds support for LCD backlight using PWM timer for Samsung SMDK6410 board. Signed-off-by: Banajit Goswami Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c64xx/Kconfig | 1 + arch/arm/mach-s3c64xx/mach-smdk6410.c | 46 ++++++++++++++++++++++++++++++++--- 2 files changed, 44 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-s3c64xx') diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig index f3a953f02dd..e4177e22557 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 e85192a86fb..6639cced5f7 100644 --- a/arch/arm/mach-s3c64xx/mach-smdk6410.c +++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c @@ -28,6 +28,7 @@ #include #include #include +#include #ifdef CONFIG_SMDK6410_WM1190_EV1 #include @@ -48,6 +49,7 @@ #include #include #include +#include #include #include @@ -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 +734,6 @@ 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)); -- cgit v1.2.3-70-g09d2 From 6d0de1577eda1fad4be14f70021135ff7df95dcf Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Mar 2011 16:10:03 +0900 Subject: ARM: S3C64XX: Fix section mismatch from cpufreq init The cpufreq init function is referenced from the driver structure and we don't appear to have annotations which allow us to mark that it'll never be called after system init, causing the linker consistency infrastructure to complain. Just remove the __init annotation to avoid noise from the build. Signed-off-by: Mark Brown Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c64xx/cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/mach-s3c64xx') diff --git a/arch/arm/mach-s3c64xx/cpufreq.c b/arch/arm/mach-s3c64xx/cpufreq.c index 74c0e8347de..4375b97588b 100644 --- a/arch/arm/mach-s3c64xx/cpufreq.c +++ b/arch/arm/mach-s3c64xx/cpufreq.c @@ -181,7 +181,7 @@ static void __init s3c64xx_cpufreq_config_regulator(void) } #endif -static int __init s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy) +static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy) { int ret; struct cpufreq_frequency_table *freq; -- cgit v1.2.3-70-g09d2