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Commit b8e21308 authored by Peter Ujfalusi's avatar Peter Ujfalusi
Browse files

ARM: OMAP: omap3beagle: Use the pwm_leds driver to control the PMU_STAT led 



With the PWM backed driver the PMU_STAT led's brighness can be controlled.
This needs the new drivers for the TWL PWM/LED to work.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
parent 42997c4b

arch/arm/mach-omap2/board-omap3beagle.c

+31 −8
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ 
#include <linux/clk.h>

#include <linux/io.h>

#include <linux/leds.h>

#include <linux/pwm.h>

#include <linux/leds_pwm.h>

#include <linux/gpio.h>

#include <linux/input.h>

#include <linux/gpio_keys.h>
@@ -55,6 +57,32 @@ 


#define	NAND_CS	0



static struct pwm_lookup pwm_lookup[] = {

	/* LEDB -> PMU_STAT */

	PWM_LOOKUP("twl-pwmled", 1, "leds_pwm", "beagleboard::pmu_stat"),

};



static struct led_pwm pwm_leds[] = {

	{

		.name		= "beagleboard::pmu_stat",

		.max_brightness	= 127,

		.pwm_period_ns	= 7812500,

	},

};



static struct led_pwm_platform_data pwm_data = {

	.num_leds	= ARRAY_SIZE(pwm_leds),

	.leds		= pwm_leds,

};



static struct platform_device leds_pwm = {

	.name	= "leds_pwm",

	.id	= -1,

	.dev	= {

		.platform_data = &pwm_data,

	},

};



/*

 * OMAP3 Beagle revision

 * Run time detection of Beagle revision is done by reading GPIO.
@@ -292,9 +320,6 @@ static int beagle_twl_gpio_setup(struct device *dev, 
	gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,

			"nEN_USB_PWR");



	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */

	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;



	return 0;

}
@@ -376,11 +401,6 @@ static struct gpio_led gpio_leds[] = { 
		.default_trigger	= "mmc0",

		.gpio			= 149,

	},

	{

		.name			= "beagleboard::pmu_stat",

		.gpio			= -EINVAL,	/* gets replaced */

		.active_low		= true,

	},

};



static struct gpio_led_platform_data gpio_led_info = {
@@ -428,6 +448,7 @@ static struct platform_device *omap3_beagle_devices[] __initdata = { 
	&leds_gpio,

	&keys_gpio,

	&madc_hwmon,

	&leds_pwm,

};



static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
@@ -532,6 +553,8 @@ static void __init omap3_beagle_init(void) 
	/* Ensure SDRC pins are mux'd for self-refresh */

	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);

	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);



	pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));

}



MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")