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Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-gpio.c20
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);