media: i2c: og01a1b: 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 <[e-mail]>
Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/i2c/og01a1b.c

···
 
 	/* To serialize asynchronus callbacks */
 	struct mutex mutex;
-
-	/* Streaming on/off */
-	bool streaming;
 };
 
 static u64 to_pixel_rate(u32 f_index)
···
 		pm_runtime_put(&client->dev);
 	}
 
-	og01a1b->streaming = enable;
 	mutex_unlock(&og01a1b->mutex);
 
 	return ret;
-}
-
-static int __maybe_unused og01a1b_suspend(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct og01a1b *og01a1b = to_og01a1b(sd);
-
-	mutex_lock(&og01a1b->mutex);
-	if (og01a1b->streaming)
-		og01a1b_stop_streaming(og01a1b);
-
-	mutex_unlock(&og01a1b->mutex);
-
-	return 0;
-}
-
-static int __maybe_unused og01a1b_resume(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct og01a1b *og01a1b = to_og01a1b(sd);
-	int ret;
-
-	mutex_lock(&og01a1b->mutex);
-	if (og01a1b->streaming) {
-		ret = og01a1b_start_streaming(og01a1b);
-		if (ret) {
-			og01a1b->streaming = false;
-			og01a1b_stop_streaming(og01a1b);
-			mutex_unlock(&og01a1b->mutex);
-			return ret;
-		}
-	}
-
-	mutex_unlock(&og01a1b->mutex);
-
-	return 0;
 }
 
 static int og01a1b_set_format(struct v4l2_subdev *sd,
···
 	return ret;
 }
 
-static const struct dev_pm_ops og01a1b_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(og01a1b_suspend, og01a1b_resume)
-};
-
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id og01a1b_acpi_ids[] = {
 	{"OVTI01AC"},
···
 static struct i2c_driver og01a1b_i2c_driver = {
 	.driver = {
 		.name = "og01a1b",
-		.pm = &og01a1b_pm_ops,
 		.acpi_match_table = ACPI_PTR(og01a1b_acpi_ids),
 	},
 	.probe = og01a1b_probe,