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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/leds/leds-regulator.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/leds/leds-regulator.c')
-rw-r--r--drivers/leds/leds-regulator.c46
1 files changed, 12 insertions, 34 deletions
diff --git a/drivers/leds/leds-regulator.c b/drivers/leds/leds-regulator.c
index ffc21397a..acf77ca47 100644
--- a/drivers/leds/leds-regulator.c
+++ b/drivers/leds/leds-regulator.c
@@ -14,7 +14,6 @@
#include <linux/module.h>
#include <linux/err.h>
#include <linux/slab.h>
-#include <linux/workqueue.h>
#include <linux/leds.h>
#include <linux/leds-regulator.h>
#include <linux/platform_device.h>
@@ -25,10 +24,8 @@
struct regulator_led {
struct led_classdev cdev;
- enum led_brightness value;
int enabled;
struct mutex mutex;
- struct work_struct work;
struct regulator *vcc;
};
@@ -94,22 +91,24 @@ static void regulator_led_disable(struct regulator_led *led)
led->enabled = 0;
}
-static void regulator_led_set_value(struct regulator_led *led)
+static int regulator_led_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
{
+ struct regulator_led *led = to_regulator_led(led_cdev);
int voltage;
- int ret;
+ int ret = 0;
mutex_lock(&led->mutex);
- if (led->value == LED_OFF) {
+ if (value == LED_OFF) {
regulator_led_disable(led);
goto out;
}
if (led->cdev.max_brightness > 1) {
- voltage = led_regulator_get_voltage(led->vcc, led->value);
+ voltage = led_regulator_get_voltage(led->vcc, value);
dev_dbg(led->cdev.dev, "brightness: %d voltage: %d\n",
- led->value, voltage);
+ value, voltage);
ret = regulator_set_voltage(led->vcc, voltage, voltage);
if (ret != 0)
@@ -121,23 +120,7 @@ static void regulator_led_set_value(struct regulator_led *led)
out:
mutex_unlock(&led->mutex);
-}
-
-static void led_work(struct work_struct *work)
-{
- struct regulator_led *led;
-
- led = container_of(work, struct regulator_led, work);
- regulator_led_set_value(led);
-}
-
-static void regulator_led_brightness_set(struct led_classdev *led_cdev,
- enum led_brightness value)
-{
- struct regulator_led *led = to_regulator_led(led_cdev);
-
- led->value = value;
- schedule_work(&led->work);
+ return ret;
}
static int regulator_led_probe(struct platform_device *pdev)
@@ -169,9 +152,8 @@ static int regulator_led_probe(struct platform_device *pdev)
pdata->brightness);
return -EINVAL;
}
- led->value = pdata->brightness;
- led->cdev.brightness_set = regulator_led_brightness_set;
+ led->cdev.brightness_set_blocking = regulator_led_brightness_set;
led->cdev.name = pdata->name;
led->cdev.flags |= LED_CORE_SUSPENDRESUME;
led->vcc = vcc;
@@ -181,21 +163,18 @@ static int regulator_led_probe(struct platform_device *pdev)
led->enabled = 1;
mutex_init(&led->mutex);
- INIT_WORK(&led->work, led_work);
platform_set_drvdata(pdev, led);
ret = led_classdev_register(&pdev->dev, &led->cdev);
- if (ret < 0) {
- cancel_work_sync(&led->work);
+ if (ret < 0)
return ret;
- }
/* to expose the default value to userspace */
- led->cdev.brightness = led->value;
+ led->cdev.brightness = pdata->brightness;
/* Set the default led status */
- regulator_led_set_value(led);
+ regulator_led_brightness_set(&led->cdev, led->cdev.brightness);
return 0;
}
@@ -205,7 +184,6 @@ static int regulator_led_remove(struct platform_device *pdev)
struct regulator_led *led = platform_get_drvdata(pdev);
led_classdev_unregister(&led->cdev);
- cancel_work_sync(&led->work);
regulator_led_disable(led);
return 0;
}