[PATCH v2 12/20] media: imx355: Use pm_runtime autosuspend_delay

[Dave Stevenson <dave.stevenson@raspberrypi.com>]

Avoid powering the sensor up and down unnecessarily by using
pm_runtime's autosuspend_delay feature.

Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/i2c/imx355.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/imx355.c b/drivers/media/i2c/imx355.c
index 0f5fbe21d7fb..c7a24c69c0df 100644
--- a/drivers/media/i2c/imx355.c
+++ b/drivers/media/i2c/imx355.c
@@ -1067,7 +1067,7 @@ static int imx355_set_stream(struct v4l2_subdev *sd, int enable)
 			goto err_rpm_put;
 	} else {
 		imx355_stop_streaming(imx355);
-		pm_runtime_put(imx355->dev);
+		pm_runtime_put_autosuspend(imx355->dev);
 	}
 
 	/* vflip and hflip cannot change during streaming */
@@ -1079,7 +1079,7 @@ static int imx355_set_stream(struct v4l2_subdev *sd, int enable)
 	return ret;
 
 err_rpm_put:
-	pm_runtime_put(imx355->dev);
+	pm_runtime_put_autosuspend(imx355->dev);
 err_unlock:
 	mutex_unlock(&imx355->mutex);
 
@@ -1430,6 +1430,8 @@ static int imx355_probe(struct i2c_client *client)
 	pm_runtime_set_active(imx355->dev);
 	pm_runtime_enable(imx355->dev);
 	pm_runtime_idle(imx355->dev);
+	pm_runtime_set_autosuspend_delay(imx355->dev, 1000);
+	pm_runtime_use_autosuspend(imx355->dev);
 
 	ret = v4l2_async_register_subdev_sensor(&imx355->sd);
 	if (ret < 0)

-- 
2.34.1