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path: root/drivers/media/i2c/ar0521.c
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Diffstat (limited to 'drivers/media/i2c/ar0521.c')
-rw-r--r--drivers/media/i2c/ar0521.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/media/i2c/ar0521.c b/drivers/media/i2c/ar0521.c
index 09331cf95c62..fc27238dd4d3 100644
--- a/drivers/media/i2c/ar0521.c
+++ b/drivers/media/i2c/ar0521.c
@@ -835,21 +835,30 @@ static const struct initial_reg {
be(0x0707)), /* 3F44: couple k factor 2 */
};
-static int ar0521_power_off(struct device *dev)
+static void __ar0521_power_off(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ar0521_dev *sensor = to_ar0521_dev(sd);
int i;
- clk_disable_unprepare(sensor->extclk);
-
if (sensor->reset_gpio)
- gpiod_set_value(sensor->reset_gpio, 1); /* assert RESET signal */
+ /* assert RESET signal */
+ gpiod_set_value_cansleep(sensor->reset_gpio, 1);
for (i = ARRAY_SIZE(ar0521_supply_names) - 1; i >= 0; i--) {
if (sensor->supplies[i])
regulator_disable(sensor->supplies[i]);
}
+}
+
+static int ar0521_power_off(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ar0521_dev *sensor = to_ar0521_dev(sd);
+
+ clk_disable_unprepare(sensor->extclk);
+ __ar0521_power_off(dev);
+
return 0;
}
@@ -878,7 +887,7 @@ static int ar0521_power_on(struct device *dev)
if (sensor->reset_gpio)
/* deassert RESET signal */
- gpiod_set_value(sensor->reset_gpio, 0);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
usleep_range(4500, 5000); /* min 45000 clocks */
for (cnt = 0; cnt < ARRAY_SIZE(initial_regs); cnt++) {
@@ -908,7 +917,8 @@ static int ar0521_power_on(struct device *dev)
return 0;
off:
- ar0521_power_off(dev);
+ clk_disable_unprepare(sensor->extclk);
+ __ar0521_power_off(dev);
return ret;
}