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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> | 2009-12-16 16:49:22 +0800 |
| commit | 61e0ac03c8223d875de93da099737fbd45ff1492 (patch) | |
| tree | 9dba51e1b01861e5ea2008084bb852d20d02c7f6 /arch | |
| parent | 5c3804629e69bf48474bb53038d5dcc5a8d25959 (diff) | |
| download | blackbird-obmc-linux-61e0ac03c8223d875de93da099737fbd45ff1492.tar.gz blackbird-obmc-linux-61e0ac03c8223d875de93da099737fbd45ff1492.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')
| -rw-r--r-- | arch/arm/mach-pxa/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/cm-x300.c | 30 |
2 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index 6f4f475bbc3d..8a0837ea0294 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -110,6 +110,8 @@ config MACH_CM_X300 bool "CompuLab CM-X300 modules" select PXA3xx select CPU_PXA300 + select CPU_PXA310 + select HAVE_PWM config ARCH_GUMSTIX bool "Gumstix XScale 255 boards" 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, |
