diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2012-11-07 15:25:30 +0100 |
|---|---|---|
| committer | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2013-01-22 10:35:07 +0100 |
| commit | b8e21308dd9561e37d9860c5423f3247f76f06b6 (patch) | |
| tree | 736d5c2320726965affa1b28a058fefcc10763e6 | |
| parent | ARM: OMAP: board-4430sdp: Proper support for TWL6030 PWM LED/Backlight (diff) | |
| download | linux-b8e21308dd9561e37d9860c5423f3247f76f06b6.tar.xz linux-b8e21308dd9561e37d9860c5423f3247f76f06b6.zip | |
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: Peter Ujfalusi <peter.ujfalusi@ti.com>
| -rw-r--r-- | arch/arm/mach-omap2/board-omap3beagle.c | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c index 909e7fa6d299..2a6e8ad1d68b 100644 --- a/arch/arm/mach-omap2/board-omap3beagle.c +++ b/arch/arm/mach-omap2/board-omap3beagle.c @@ -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") |