diff options
Diffstat (limited to 'drivers/leds')
-rw-r--r-- | drivers/leds/leds-gpio.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 76895e691042..6b06638eb5b4 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c | |||
@@ -76,7 +76,7 @@ static int __devinit create_gpio_led(const struct gpio_led *template, | |||
76 | struct gpio_led_data *led_dat, struct device *parent, | 76 | struct gpio_led_data *led_dat, struct device *parent, |
77 | int (*blink_set)(unsigned, unsigned long *, unsigned long *)) | 77 | int (*blink_set)(unsigned, unsigned long *, unsigned long *)) |
78 | { | 78 | { |
79 | int ret; | 79 | int ret, state; |
80 | 80 | ||
81 | /* skip leds that aren't available */ | 81 | /* skip leds that aren't available */ |
82 | if (!gpio_is_valid(template->gpio)) { | 82 | if (!gpio_is_valid(template->gpio)) { |
@@ -99,11 +99,15 @@ static int __devinit create_gpio_led(const struct gpio_led *template, | |||
99 | led_dat->cdev.blink_set = gpio_blink_set; | 99 | led_dat->cdev.blink_set = gpio_blink_set; |
100 | } | 100 | } |
101 | led_dat->cdev.brightness_set = gpio_led_set; | 101 | led_dat->cdev.brightness_set = gpio_led_set; |
102 | led_dat->cdev.brightness = LED_OFF; | 102 | if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) |
103 | state = !!gpio_get_value(led_dat->gpio) ^ led_dat->active_low; | ||
104 | else | ||
105 | state = (template->default_state == LEDS_GPIO_DEFSTATE_ON); | ||
106 | led_dat->cdev.brightness = state ? LED_FULL : LED_OFF; | ||
103 | if (!template->retain_state_suspended) | 107 | if (!template->retain_state_suspended) |
104 | led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME; | 108 | led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME; |
105 | 109 | ||
106 | ret = gpio_direction_output(led_dat->gpio, led_dat->active_low); | 110 | ret = gpio_direction_output(led_dat->gpio, led_dat->active_low ^ state); |
107 | if (ret < 0) | 111 | if (ret < 0) |
108 | goto err; | 112 | goto err; |
109 | 113 | ||
@@ -223,12 +227,22 @@ static int __devinit of_gpio_leds_probe(struct of_device *ofdev, | |||
223 | memset(&led, 0, sizeof(led)); | 227 | memset(&led, 0, sizeof(led)); |
224 | for_each_child_of_node(np, child) { | 228 | for_each_child_of_node(np, child) { |
225 | enum of_gpio_flags flags; | 229 | enum of_gpio_flags flags; |
230 | const char *state; | ||
226 | 231 | ||
227 | led.gpio = of_get_gpio_flags(child, 0, &flags); | 232 | led.gpio = of_get_gpio_flags(child, 0, &flags); |
228 | led.active_low = flags & OF_GPIO_ACTIVE_LOW; | 233 | led.active_low = flags & OF_GPIO_ACTIVE_LOW; |
229 | led.name = of_get_property(child, "label", NULL) ? : child->name; | 234 | led.name = of_get_property(child, "label", NULL) ? : child->name; |
230 | led.default_trigger = | 235 | led.default_trigger = |
231 | of_get_property(child, "linux,default-trigger", NULL); | 236 | of_get_property(child, "linux,default-trigger", NULL); |
237 | state = of_get_property(child, "default-state", NULL); | ||
238 | if (state) { | ||
239 | if (!strcmp(state, "keep")) | ||
240 | led.default_state = LEDS_GPIO_DEFSTATE_KEEP; | ||
241 | else if(!strcmp(state, "on")) | ||
242 | led.default_state = LEDS_GPIO_DEFSTATE_ON; | ||
243 | else | ||
244 | led.default_state = LEDS_GPIO_DEFSTATE_OFF; | ||
245 | } | ||
232 | 246 | ||
233 | ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++], | 247 | ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++], |
234 | &ofdev->dev, NULL); | 248 | &ofdev->dev, NULL); |