xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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: Peter Ujfalusi <peter.ujfalusi@ti.com>
This commit is contained in:
Peter Ujfalusi
2012-11-07 15:25:30 +01:00
parent 42997c4b2e
commit b8e21308dd
1 changed files with 31 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
arch/arm/mach-omap2/board-omap3beagle.c
View File

@@ -20,6 +20,8 @@
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/io.h> #include <linux/io.h>
#include <linux/leds.h> #include <linux/leds.h>
#include <linux/pwm.h>
#include <linux/leds_pwm.h>
#include <linux/gpio.h> #include <linux/gpio.h>
#include <linux/input.h> #include <linux/input.h>
#include <linux/gpio_keys.h> #include <linux/gpio_keys.h>
@@ -55,6 +57,32 @@
#define NAND_CS 0 #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 * OMAP3 Beagle revision
* Run time detection of Beagle revision is done by reading GPIO. * 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, gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
"nEN_USB_PWR"); "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; return 0;
} }
@@ -376,11 +401,6 @@ static struct gpio_led gpio_leds[] = {
.default_trigger = "mmc0", .default_trigger = "mmc0",
.gpio = 149, .gpio = 149,
}, },
{
.name = "beagleboard::pmu_stat",
.gpio = -EINVAL, /* gets replaced */
.active_low = true,
},
}; };
static struct gpio_led_platform_data gpio_led_info = { static struct gpio_led_platform_data gpio_led_info = {
@@ -428,6 +448,7 @@ static struct platform_device *omap3_beagle_devices[] __initdata = {
&leds_gpio, &leds_gpio,
&keys_gpio, &keys_gpio,
&madc_hwmon, &madc_hwmon,
&leds_pwm,
}; };
static const struct usbhs_omap_board_data usbhs_bdata __initconst = { 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 */ /* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT); omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
omap_mux_init_signal("sdrc_cke1", 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") MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")