From ca3259b3603539e72faacc6821050ee889a52103 Mon Sep 17 00:00:00 2001 From: Herbert Valerio Riedel Date: Sun, 9 Mar 2008 23:48:25 +0000 Subject: [PATCH] leds: enable support for blink_set() platform hook in leds-gpio Enhance leds-gpio to provide hardware-based led flashing by passing through the blink_set() call to a optionally set platform-specific function pointer. Signed-off-by: Herbert Valerio Riedel Signed-off-by: Richard Purdie --- drivers/leds/leds-gpio.c | 15 +++++++++++++++ include/linux/leds.h | 3 +++ 2 files changed, 18 insertions(+) diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 1aae8b3321..b13bd2950e 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c @@ -24,6 +24,8 @@ struct gpio_led_data { u8 new_level; u8 can_sleep; u8 active_low; + int (*platform_gpio_blink_set)(unsigned gpio, + unsigned long *delay_on, unsigned long *delay_off); }; static void gpio_led_work(struct work_struct *work) @@ -60,6 +62,15 @@ static void gpio_led_set(struct led_classdev *led_cdev, gpio_set_value(led_dat->gpio, level); } +static int gpio_blink_set(struct led_classdev *led_cdev, + unsigned long *delay_on, unsigned long *delay_off) +{ + struct gpio_led_data *led_dat = + container_of(led_cdev, struct gpio_led_data, cdev); + + return led_dat->platform_gpio_blink_set(led_dat->gpio, delay_on, delay_off); +} + static int gpio_led_probe(struct platform_device *pdev) { struct gpio_led_platform_data *pdata = pdev->dev.platform_data; @@ -88,6 +99,10 @@ static int gpio_led_probe(struct platform_device *pdev) led_dat->gpio = cur_led->gpio; led_dat->can_sleep = gpio_cansleep(cur_led->gpio); led_dat->active_low = cur_led->active_low; + if (pdata->gpio_blink_set) { + led_dat->platform_gpio_blink_set = pdata->gpio_blink_set; + led_dat->cdev.blink_set = gpio_blink_set; + } led_dat->cdev.brightness_set = gpio_led_set; led_dat->cdev.brightness = LED_OFF; diff --git a/include/linux/leds.h b/include/linux/leds.h index b07e3d400b..c195a674b6 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -126,6 +126,9 @@ struct gpio_led { struct gpio_led_platform_data { int num_leds; struct gpio_led *leds; + int (*gpio_blink_set)(unsigned gpio, + unsigned long *delay_on, + unsigned long *delay_off); }; -- 2.39.5