static void led_work(struct work_struct *work)
{
struct wm8350_led *led = container_of(work, struct wm8350_led, work);
int ret;
int uA;
unsigned long flags;
mutex_lock(&led->mutex);
spin_lock_irqsave(&led->value_lock, flags);
if (led->value == LED_OFF) {
spin_unlock_irqrestore(&led->value_lock, flags);
wm8350_led_disable(led);
goto out;
}
uA = (led->max_uA_index * led->value) / LED_FULL;
spin_unlock_irqrestore(&led->value_lock, flags);
BUG_ON(uA >= ARRAY_SIZE(isink_cur));
ret = regulator_set_current_limit(led->isink, isink_cur[uA],
isink_cur[uA]);
if (ret != 0)
dev_err(led->cdev.dev, "Failed to set %duA: %d\n",
isink_cur[uA], ret);
wm8350_led_enable(led);
out:
mutex_unlock(&led->mutex);
}
static void wm8350_led_shutdown(struct platform_device *pdev)
{
struct wm8350_led *led = platform_get_drvdata(pdev);
mutex_lock(&led->mutex);
led->value = LED_OFF;
wm8350_led_disable(led);
mutex_unlock(&led->mutex);
}
static int wm8350_led_remove(struct platform_device *pdev)
{
struct wm8350_led *led = platform_get_drvdata(pdev);
led_classdev_unregister(&led->cdev);
flush_work(&led->work);
wm8350_led_disable(led);
return 0;
}
static int wm8350_led_remove(struct platform_device *pdev)
{
struct wm8350_led *led = platform_get_drvdata(pdev);
led_classdev_unregister(&led->cdev);
flush_scheduled_work();
wm8350_led_disable(led);
regulator_put(led->dcdc);
regulator_put(led->isink);
kfree(led);
return 0;
}
static void led_work(struct work_struct *work)
{
struct wm8350_led *led = container_of(work, struct wm8350_led, work);
int ret;
int uA;
unsigned long flags;
mutex_lock(&led->mutex);
spin_lock_irqsave(&led->value_lock, flags);
if (led->value == LED_OFF) {
spin_unlock_irqrestore(&led->value_lock, flags);
wm8350_led_disable(led);
goto out;
}
/* This scales linearly into the index of valid current
* settings which results in a linear scaling of perceived
* brightness due to the non-linear current settings provided
* by the hardware.
*/
uA = (led->max_uA_index * led->value) / LED_FULL;
spin_unlock_irqrestore(&led->value_lock, flags);
BUG_ON(uA >= ARRAY_SIZE(isink_cur));
ret = regulator_set_current_limit(led->isink, isink_cur[uA],
isink_cur[uA]);
if (ret != 0)
dev_err(led->cdev.dev, "Failed to set %duA: %d\n",
isink_cur[uA], ret);
wm8350_led_enable(led);
out:
mutex_unlock(&led->mutex);
}
