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Commit 61e0ac03 authored by Igor Grinberg's avatar Igor Grinberg Committed by Eric Miao
Browse files

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



Signed-off-by: default avatarIgor Grinberg <grinberg@compulab.co.il>
Signed-off-by: default avatarMike Rapoport <mike@compulab.co.il>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent 5c380462

arch/arm/mach-pxa/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -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"

arch/arm/mach-pxa/cm-x300.c

+30 −0
Original line number Diff line number Diff line
@@ -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,