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path: root/drivers/leds/leds-lm3530.c
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Diffstat (limited to 'drivers/leds/leds-lm3530.c')
-rw-r--r--drivers/leds/leds-lm3530.c58
1 files changed, 40 insertions, 18 deletions
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
index 21414548383..a036a19040f 100644
--- a/drivers/leds/leds-lm3530.c
+++ b/drivers/leds/leds-lm3530.c
@@ -187,6 +187,40 @@ static void lm3530_als_configure(struct lm3530_platform_data *pdata,
(pdata->als2_resistor_sel << LM3530_ALS2_IMP_SHIFT);
}
+static int lm3530_led_enable(struct lm3530_data *drvdata)
+{
+ int ret;
+
+ if (drvdata->enable)
+ return 0;
+
+ ret = regulator_enable(drvdata->regulator);
+ if (ret) {
+ dev_err(drvdata->led_dev.dev, "Failed to enable vin:%d\n", ret);
+ return ret;
+ }
+
+ drvdata->enable = true;
+ return 0;
+}
+
+static void lm3530_led_disable(struct lm3530_data *drvdata)
+{
+ int ret;
+
+ if (!drvdata->enable)
+ return;
+
+ ret = regulator_disable(drvdata->regulator);
+ if (ret) {
+ dev_err(drvdata->led_dev.dev, "Failed to disable vin:%d\n",
+ ret);
+ return;
+ }
+
+ drvdata->enable = false;
+}
+
static int lm3530_init_registers(struct lm3530_data *drvdata)
{
int ret = 0;
@@ -245,15 +279,9 @@ static int lm3530_init_registers(struct lm3530_data *drvdata)
reg_val[12] = LM3530_DEF_ZT_3; /* LM3530_ALS_Z3T_REG */
reg_val[13] = LM3530_DEF_ZT_4; /* LM3530_ALS_Z4T_REG */
- if (!drvdata->enable) {
- ret = regulator_enable(drvdata->regulator);
- if (ret) {
- dev_err(&drvdata->client->dev,
- "Enable regulator failed\n");
- return ret;
- }
- drvdata->enable = true;
- }
+ ret = lm3530_led_enable(drvdata);
+ if (ret)
+ return ret;
for (i = 0; i < LM3530_REG_MAX; i++) {
/* do not update brightness register when pwm mode */
@@ -305,13 +333,8 @@ static void lm3530_brightness_set(struct led_classdev *led_cdev,
else
drvdata->brightness = brt_val;
- if (brt_val == 0) {
- err = regulator_disable(drvdata->regulator);
- if (err)
- dev_err(&drvdata->client->dev,
- "Disable regulator failed\n");
- drvdata->enable = false;
- }
+ if (brt_val == 0)
+ lm3530_led_disable(drvdata);
break;
case LM3530_BL_MODE_ALS:
break;
@@ -458,8 +481,7 @@ static int lm3530_remove(struct i2c_client *client)
device_remove_file(drvdata->led_dev.dev, &dev_attr_mode);
- if (drvdata->enable)
- regulator_disable(drvdata->regulator);
+ lm3530_led_disable(drvdata);
led_classdev_unregister(&drvdata->led_dev);
return 0;
}