media: i2c: ov01a10: Drop system suspend and resume handlers

Stopping streaming on a camera pipeline at system suspend time, and
restarting it at system resume time, requires coordinated action between
the bridge driver and the camera sensor driver. This is handled by the
bridge driver calling the sensor's .s_stream() handler at system suspend
and resume time. There is thus no need for the sensor to independently
implement system sleep PM operations. Drop them.

The streaming field of the driver's private structure is now unused,
drop it as well.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/i2c/ov01a10.c

@@ -287,9 +287,6 @@ struct ov01a10 {
 	struct v4l2_ctrl *exposure;
 
 	const struct ov01a10_mode *cur_mode;
-
-	/* streaming state */
-	bool streaming;
 };
 
 static inline struct ov01a10 *to_ov01a10(struct v4l2_subdev *subdev)
@@ -683,55 +680,12 @@ static int ov01a10_set_stream(struct v4l2_subdev *sd, int enable)
 			pm_runtime_put(&client->dev);
 			goto unlock;
 		}
-
-		goto done;
-	}
-
-	ov01a10_stop_streaming(ov01a10);
-	pm_runtime_put(&client->dev);
-done:
-	ov01a10->streaming = enable;
-unlock:
-	v4l2_subdev_unlock_state(state);
-
-	return ret;
-}
-
-static int __maybe_unused ov01a10_suspend(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct ov01a10 *ov01a10 = to_ov01a10(sd);
-	struct v4l2_subdev_state *state;
-
-	state = v4l2_subdev_lock_and_get_active_state(sd);
-	if (ov01a10->streaming)
-		ov01a10_stop_streaming(ov01a10);
-
-	v4l2_subdev_unlock_state(state);
-
-	return 0;
-}
-
-static int __maybe_unused ov01a10_resume(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct ov01a10 *ov01a10 = to_ov01a10(sd);
-	struct v4l2_subdev_state *state;
-	int ret = 0;
-
-	state = v4l2_subdev_lock_and_get_active_state(sd);
-	if (!ov01a10->streaming)
-		goto exit;
-
-	ret = ov01a10_start_streaming(ov01a10);
-	if (ret) {
-		ov01a10->streaming = false;
+	} else {
 		ov01a10_stop_streaming(ov01a10);
+		pm_runtime_put(&client->dev);
 	}
 
-exit:
+unlock:
 	v4l2_subdev_unlock_state(state);
 
 	return ret;
@@ -971,10 +925,6 @@ static int ov01a10_probe(struct i2c_client *client)
 	return ret;
 }
 
-static const struct dev_pm_ops ov01a10_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(ov01a10_suspend, ov01a10_resume)
-};
-
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id ov01a10_acpi_ids[] = {
 	{ "OVTI01A0" },
@@ -987,7 +937,6 @@ MODULE_DEVICE_TABLE(acpi, ov01a10_acpi_ids);
 static struct i2c_driver ov01a10_i2c_driver = {
 	.driver = {
 		.name = "ov01a10",
-		.pm = &ov01a10_pm_ops,
 		.acpi_match_table = ACPI_PTR(ov01a10_acpi_ids),
 	},
 	.probe = ov01a10_probe,