[PATCH v4 09/16] media: sony-starvis2: Use pm_runtime_autosuspend

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

In order to reduce the time in stopping and restarting
streaming, use pm_runtime_autosuspend so the sensor
isn't powered down.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/i2c/sony-starvis2.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/media/i2c/sony-starvis2.c b/drivers/media/i2c/sony-starvis2.c
index 49dcbda9ecdd..dce150304dc6 100644
--- a/drivers/media/i2c/sony-starvis2.c
+++ b/drivers/media/i2c/sony-starvis2.c
@@ -858,7 +858,7 @@ static int starvis2_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	pm_runtime_put_autosuspend(&client->dev);
 
 	return ret;
 }
@@ -1046,7 +1046,7 @@ static int starvis2_enable_streams(struct v4l2_subdev *sd,
 	return 0;
 
 err_rpm_put:
-	pm_runtime_put(&client->dev);
+	pm_runtime_put_autosuspend(&client->dev);
 
 	return ret;
 }
@@ -1069,7 +1069,7 @@ static int starvis2_disable_streams(struct v4l2_subdev *sd,
 
 	__v4l2_ctrl_grab(starvis2->link_freq, false);
 
-	pm_runtime_put(&client->dev);
+	pm_runtime_put_autosuspend(&client->dev);
 
 	return ret;
 }
@@ -1448,6 +1448,8 @@ static int starvis2_probe(struct i2c_client *client)
 
 	pm_runtime_set_active(dev);
 	pm_runtime_enable(dev);
+	pm_runtime_set_autosuspend_delay(dev, 1000);
+	pm_runtime_use_autosuspend(dev);
 
 	ret = starvis2_init_controls(starvis2);
 	if (ret)
@@ -1495,6 +1497,7 @@ static int starvis2_probe(struct i2c_client *client)
 error_pm_runtime:
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
+	pm_runtime_dont_use_autosuspend(&client->dev);
 
 error_power_off:
 	starvis2_power_off(&client->dev);
@@ -1516,6 +1519,7 @@ static void starvis2_remove(struct i2c_client *client)
 	if (!pm_runtime_status_suspended(&client->dev))
 		starvis2_power_off(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
+	pm_runtime_dont_use_autosuspend(&client->dev);
 }
 
 static const struct dev_pm_ops starvis2_pm_ops = {

-- 
2.34.1