diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0055-Fix-LED-input-trigger-implementation-for-3.19.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0055-Fix-LED-input-trigger-implementation-for-3.19.patch | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0055-Fix-LED-input-trigger-implementation-for-3.19.patch b/target/linux/brcm2708/patches-4.1/0055-Fix-LED-input-trigger-implementation-for-3.19.patch new file mode 100644 index 0000000..0d15152 --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0055-Fix-LED-input-trigger-implementation-for-3.19.patch @@ -0,0 +1,83 @@ +From 730ac9d3f596df543a2bd15b5b299da977966cc9 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Thu, 12 Feb 2015 11:17:53 +0000 +Subject: [PATCH 055/203] Fix LED "input" trigger implementation for 3.19 + +--- + drivers/leds/leds-gpio.c | 10 +++++++++- + drivers/leds/trigger/ledtrig-input.c | 19 ++++--------------- + include/linux/leds.h | 3 +++ + 3 files changed, 16 insertions(+), 16 deletions(-) + +--- a/drivers/leds/leds-gpio.c ++++ b/drivers/leds/leds-gpio.c +@@ -41,6 +41,13 @@ static void gpio_led_work(struct work_st + led_dat->platform_gpio_blink_set(led_dat->gpiod, + led_dat->new_level, NULL, NULL); + led_dat->blinking = 0; ++ } else if (led_dat->cdev.flags & SET_GPIO_INPUT) { ++ gpiod_direction_input(led_dat->gpiod); ++ led_dat->cdev.flags &= ~SET_GPIO_INPUT; ++ } ++ else if (led_dat->cdev.flags & SET_GPIO_OUTPUT) { ++ gpiod_direction_output(led_dat->gpiod, led_dat->new_level); ++ led_dat->cdev.flags &= ~SET_GPIO_OUTPUT; + } else + gpiod_set_value_cansleep(led_dat->gpiod, led_dat->new_level); + } +@@ -61,7 +68,8 @@ static void gpio_led_set(struct led_clas + * seem to have a reliable way to know if we're already in one; so + * let's just assume the worst. + */ +- if (led_dat->can_sleep) { ++ if (led_dat->can_sleep || ++ (led_dat->cdev.flags & (SET_GPIO_INPUT | SET_GPIO_OUTPUT) )) { + led_dat->new_level = level; + schedule_work(&led_dat->work); + } else { +--- a/drivers/leds/trigger/ledtrig-input.c ++++ b/drivers/leds/trigger/ledtrig-input.c +@@ -18,27 +18,16 @@ + #include <linux/gpio.h> + #include "../leds.h" + +-/* This is a hack to get at the private 'gpio' member */ +- +-struct gpio_led_data { +- struct led_classdev cdev; +- unsigned gpio; +-}; +- + static void input_trig_activate(struct led_classdev *led_cdev) + { +- struct gpio_led_data *led_dat = +- container_of(led_cdev, struct gpio_led_data, cdev); +- if (gpio_is_valid(led_dat->gpio)) +- gpio_direction_input(led_dat->gpio); ++ led_cdev->flags |= SET_GPIO_INPUT; ++ led_set_brightness_async(led_cdev, 0); + } + + static void input_trig_deactivate(struct led_classdev *led_cdev) + { +- struct gpio_led_data *led_dat = +- container_of(led_cdev, struct gpio_led_data, cdev); +- if (gpio_is_valid(led_dat->gpio)) +- gpio_direction_output(led_dat->gpio, 0); ++ led_cdev->flags |= SET_GPIO_OUTPUT; ++ led_set_brightness_async(led_cdev, 0); + } + + static struct led_trigger input_led_trigger = { +--- a/include/linux/leds.h ++++ b/include/linux/leds.h +@@ -47,6 +47,9 @@ struct led_classdev { + #define SET_BRIGHTNESS_ASYNC (1 << 21) + #define SET_BRIGHTNESS_SYNC (1 << 22) + #define LED_DEV_CAP_FLASH (1 << 23) ++ /* Additions for Raspberry Pi PWR LED */ ++#define SET_GPIO_INPUT (1 << 30) ++#define SET_GPIO_OUTPUT (1 << 31) + + /* Set LED brightness level */ + /* Must not sleep, use a workqueue if needed */ |