diff options
| -rw-r--r-- | drivers/leds/leds-pwm.c | 62 |
1 files changed, 23 insertions, 39 deletions
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c index 203e332..35c1c5f 100644 --- a/drivers/leds/leds-pwm.c +++ b/drivers/leds/leds-pwm.c @@ -93,7 +93,7 @@ static void led_pwm_cleanup(struct led_pwm_priv *priv) } static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, - struct led_pwm *led) + struct led_pwm *led, struct device_node *child) { struct led_pwm_data *led_data = &priv->leds[priv->num_leds]; int ret; @@ -107,7 +107,10 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, led_data->cdev.max_brightness = led->max_brightness; led_data->cdev.flags = LED_CORE_SUSPENDRESUME; - led_data->pwm = devm_pwm_get(dev, led->name); + if (child) + led_data->pwm = devm_of_pwm_get(dev, child, NULL); + else + led_data->pwm = devm_pwm_get(dev, led->name); if (IS_ERR(led_data->pwm)) { ret = PTR_ERR(led_data->pwm); dev_err(dev, "unable to request PWM for %s: %d\n", @@ -115,6 +118,9 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, return ret; } + if (child) + led_data->period = pwm_get_period(led_data->pwm); + led_data->can_sleep = pwm_can_sleep(led_data->pwm); if (led_data->can_sleep) INIT_WORK(&led_data->work, led_pwm_work); @@ -130,53 +136,30 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, return ret; } -static int led_pwm_create_of(struct platform_device *pdev, - struct led_pwm_priv *priv) +static int led_pwm_create_of(struct device *dev, struct led_pwm_priv *priv) { struct device_node *child; - int ret; - - for_each_child_of_node(pdev->dev.of_node, child) { - struct led_pwm_data *led_dat = &priv->leds[priv->num_leds]; + struct led_pwm led; + int ret = 0; - led_dat->cdev.name = of_get_property(child, "label", - NULL) ? : child->name; + memset(&led, 0, sizeof(led)); - led_dat->pwm = devm_of_pwm_get(&pdev->dev, child, NULL); - if (IS_ERR(led_dat->pwm)) { - dev_err(&pdev->dev, "unable to request PWM for %s\n", - led_dat->cdev.name); - ret = PTR_ERR(led_dat->pwm); - goto err; - } - /* Get the period from PWM core when n*/ - led_dat->period = pwm_get_period(led_dat->pwm); + for_each_child_of_node(dev->of_node, child) { + led.name = of_get_property(child, "label", NULL) ? : + child->name; - led_dat->cdev.default_trigger = of_get_property(child, + led.default_trigger = of_get_property(child, "linux,default-trigger", NULL); of_property_read_u32(child, "max-brightness", - &led_dat->cdev.max_brightness); - - led_dat->cdev.brightness_set = led_pwm_set; - led_dat->cdev.brightness = LED_OFF; - led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME; - - led_dat->can_sleep = pwm_can_sleep(led_dat->pwm); - if (led_dat->can_sleep) - INIT_WORK(&led_dat->work, led_pwm_work); + &led.max_brightness); - ret = led_classdev_register(&pdev->dev, &led_dat->cdev); - if (ret < 0) { - dev_err(&pdev->dev, "failed to register for %s\n", - led_dat->cdev.name); + ret = led_pwm_add(dev, priv, &led, child); + if (ret) { of_node_put(child); - goto err; + break; } - priv->num_leds++; } - return 0; -err: return ret; } @@ -202,12 +185,13 @@ static int led_pwm_probe(struct platform_device *pdev) if (pdata) { for (i = 0; i < count; i++) { - ret = led_pwm_add(&pdev->dev, priv, &pdata->leds[i]); + ret = led_pwm_add(&pdev->dev, priv, &pdata->leds[i], + NULL); if (ret) break; } } else { - ret = led_pwm_create_of(pdev, priv); + ret = led_pwm_create_of(&pdev->dev, priv); } if (ret) { |
