[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>
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@ -110,6 +110,8 @@ config MACH_CM_X300
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bool "CompuLab CM-X300 modules"
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select PXA3xx
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select CPU_PXA300
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select CPU_PXA310
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select HAVE_PWM
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config ARCH_GUMSTIX
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bool "Gumstix XScale 255 boards"
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@ -24,6 +24,7 @@
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#include <linux/dm9000.h>
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#include <linux/leds.h>
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#include <linux/rtc-v3020.h>
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#include <linux/pwm_backlight.h>
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#include <linux/i2c.h>
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#include <linux/i2c/pca953x.h>
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@ -50,6 +51,7 @@
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#include <asm/mach/map.h>
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#include "generic.h"
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#include "devices.h"
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#define CM_X300_ETH_PHYS 0x08000010
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@ -160,6 +162,9 @@ static mfp_cfg_t cm_x3xx_mfp_cfg[] __initdata = {
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/* Standard I2C */
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GPIO21_I2C_SCL,
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GPIO22_I2C_SDA,
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/* PWM Backlight */
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GPIO19_PWM2_OUT,
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};
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static mfp_cfg_t cm_x3xx_rev_lt130_mfp_cfg[] __initdata = {
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@ -290,6 +295,30 @@ static void __init cm_x300_init_lcd(void)
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static inline void cm_x300_init_lcd(void) {}
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#endif
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#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
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static struct platform_pwm_backlight_data cm_x300_backlight_data = {
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.pwm_id = 2,
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.max_brightness = 100,
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.dft_brightness = 100,
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.pwm_period_ns = 10000,
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};
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static struct platform_device cm_x300_backlight_device = {
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.name = "pwm-backlight",
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.dev = {
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.parent = &pxa27x_device_pwm0.dev,
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.platform_data = &cm_x300_backlight_data,
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},
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};
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static void cm_x300_init_bl(void)
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{
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platform_device_register(&cm_x300_backlight_device);
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}
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#else
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static inline void cm_x300_init_bl(void) {}
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#endif
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#if defined(CONFIG_SPI_GPIO) || defined(CONFIG_SPI_GPIO_MODULE)
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#define GPIO_LCD_BASE (144)
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#define GPIO_LCD_DIN (GPIO_LCD_BASE + 8) /* aux_gpio3_0 */
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@ -654,6 +683,7 @@ static void __init cm_x300_init(void)
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cm_x300_init_rtc();
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cm_x300_init_ac97();
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cm_x300_init_wi2wi();
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cm_x300_init_bl();
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}
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static void __init cm_x300_fixup(struct machine_desc *mdesc, struct tag *tags,
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