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[ARM] pxa/cm-x300: add PWM backlight support

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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>
This commit is contained in:
Igor Grinberg 2009-11-10 14:18:41 +02:00 committed by Eric Miao
parent 5fa46fca1c
commit db205463fd
3 changed files with 32 additions and 0 deletions
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1
arch/arm/mach-pxa/Kconfig
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@ -226,6 +226,7 @@ config MACH_COLIBRI300
select PXA3xx select PXA3xx
select CPU_PXA300 select CPU_PXA300
select CPU_PXA310 select CPU_PXA310
select HAVE_PWM
config MACH_COLIBRI320 config MACH_COLIBRI320
bool "Toradex Colibri PXA320" bool "Toradex Colibri PXA320"

30
arch/arm/mach-pxa/cm-x300.c
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@ -24,6 +24,7 @@
#include <linux/dm9000.h> #include <linux/dm9000.h>
#include <linux/leds.h> #include <linux/leds.h>
#include <linux/rtc-v3020.h> #include <linux/rtc-v3020.h>
#include <linux/pwm_backlight.h>
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/i2c/pca953x.h> #include <linux/i2c/pca953x.h>
@ -50,6 +51,7 @@
#include <asm/mach/map.h> #include <asm/mach/map.h>
#include "generic.h" #include "generic.h"
#include "devices.h"
#define CM_X300_ETH_PHYS 0x08000010 #define CM_X300_ETH_PHYS 0x08000010
@ -160,6 +162,9 @@ static mfp_cfg_t cm_x3xx_mfp_cfg[] __initdata = {
/* Standard I2C */ /* Standard I2C */
GPIO21_I2C_SCL, GPIO21_I2C_SCL,
GPIO22_I2C_SDA, GPIO22_I2C_SDA,
/* PWM Backlight */
GPIO19_PWM2_OUT,
}; };
static mfp_cfg_t cm_x3xx_rev_lt130_mfp_cfg[] __initdata = { 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) {} static inline void cm_x300_init_lcd(void) {}
#endif #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) #if defined(CONFIG_SPI_GPIO) || defined(CONFIG_SPI_GPIO_MODULE)
#define GPIO_LCD_BASE (144) #define GPIO_LCD_BASE (144)
#define GPIO_LCD_DIN (GPIO_LCD_BASE + 8) /* aux_gpio3_0 */ #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_rtc();
cm_x300_init_ac97(); cm_x300_init_ac97();
cm_x300_init_wi2wi(); cm_x300_init_wi2wi();
cm_x300_init_bl();
} }
static void __init cm_x300_fixup(struct machine_desc *mdesc, struct tag *tags, static void __init cm_x300_fixup(struct machine_desc *mdesc, struct tag *tags,

1
arch/arm/mach-pxa/devices.c
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@ -4,6 +4,7 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <mach/hardware.h>
#include <mach/udc.h> #include <mach/udc.h>
#include <mach/pxafb.h> #include <mach/pxafb.h>
#include <mach/mmc.h> #include <mach/mmc.h>