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| author | Igor Grinberg <grinberg@compulab.co.il> | 2009-11-10 14:18:41 +0200 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2009-12-01 09:03:13 +0800 |
| commit | db205463fd24c0972ad2c4e4fafb1c76e51b4380 (patch) | |
| tree | 0be3eea8421b31452675e943ea879dfc6e567d7b /arch/arm/mach-pxa | |
| parent | 5fa46fca1c209b9fd1dbfd5bc680a236d9f78d54 (diff) | |
| download | linux-db205463fd24c0972ad2c4e4fafb1c76e51b4380.tar.gz linux-db205463fd24c0972ad2c4e4fafb1c76e51b4380.tar.bz2 linux-db205463fd24c0972ad2c4e4fafb1c76e51b4380.zip | |
[ARM] pxa/cm-x300: add PWM backlight support
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa')
| -rw-r--r-- | arch/arm/mach-pxa/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/cm-x300.c | 30 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/devices.c | 1 |
3 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index 20e645a6943a..d89c6adbe8bc 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -226,6 +226,7 @@ config MACH_COLIBRI300 select PXA3xx select CPU_PXA300 select CPU_PXA310 + select HAVE_PWM config MACH_COLIBRI320 bool "Toradex Colibri PXA320" diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c index d564d8ea5a33..d37cfa132a65 100644 --- a/arch/arm/mach-pxa/cm-x300.c +++ b/arch/arm/mach-pxa/cm-x300.c @@ -24,6 +24,7 @@ #include <linux/dm9000.h> #include <linux/leds.h> #include <linux/rtc-v3020.h> +#include <linux/pwm_backlight.h> #include <linux/i2c.h> #include <linux/i2c/pca953x.h> @@ -50,6 +51,7 @@ #include <asm/mach/map.h> #include "generic.h" +#include "devices.h" #define CM_X300_ETH_PHYS 0x08000010 @@ -160,6 +162,9 @@ static mfp_cfg_t cm_x3xx_mfp_cfg[] __initdata = { /* Standard I2C */ GPIO21_I2C_SCL, GPIO22_I2C_SDA, + + /* PWM Backlight */ + GPIO19_PWM2_OUT, }; static mfp_cfg_t cm_x3xx_rev_lt130_mfp_cfg[] __initdata = { @@ -290,6 +295,30 @@ static void __init cm_x300_init_lcd(void) static inline void cm_x300_init_lcd(void) {} #endif +#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE) +static struct platform_pwm_backlight_data cm_x300_backlight_data = { + .pwm_id = 2, + .max_brightness = 100, + .dft_brightness = 100, + .pwm_period_ns = 10000, +}; + +static struct platform_device cm_x300_backlight_device = { + .name = "pwm-backlight", + .dev = { + .parent = &pxa27x_device_pwm0.dev, + .platform_data = &cm_x300_backlight_data, + }, +}; + +static void cm_x300_init_bl(void) +{ + platform_device_register(&cm_x300_backlight_device); +} +#else +static inline void cm_x300_init_bl(void) {} +#endif + #if defined(CONFIG_SPI_GPIO) || defined(CONFIG_SPI_GPIO_MODULE) #define GPIO_LCD_BASE (144) #define GPIO_LCD_DIN (GPIO_LCD_BASE + 8) /* aux_gpio3_0 */ @@ -654,6 +683,7 @@ static void __init cm_x300_init(void) cm_x300_init_rtc(); cm_x300_init_ac97(); cm_x300_init_wi2wi(); + cm_x300_init_bl(); } static void __init cm_x300_fixup(struct machine_desc *mdesc, struct tag *tags, diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c index d4cc41d04b25..3395463bb5a6 100644 --- a/arch/arm/mach-pxa/devices.c +++ b/arch/arm/mach-pxa/devices.c @@ -4,6 +4,7 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> +#include <mach/hardware.h> #include <mach/udc.h> #include <mach/pxafb.h> #include <mach/mmc.h> |