media: i2c: imx319: 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/imx319.c

···
 	 */
 	struct mutex mutex;
 
-	/* Streaming on/off */
-	bool streaming;
 	/* True if the device has been identified */
 	bool identified;
 };
···
 		pm_runtime_put(&client->dev);
 	}
 
-	imx319->streaming = enable;
-
 	/* vflip and hflip cannot change during streaming */
 	__v4l2_ctrl_grab(imx319->vflip, enable);
 	__v4l2_ctrl_grab(imx319->hflip, enable);
···
 err_unlock:
 	mutex_unlock(&imx319->mutex);
 
-	return ret;
-}
-
-static int __maybe_unused imx319_suspend(struct device *dev)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	struct imx319 *imx319 = to_imx319(sd);
-
-	if (imx319->streaming)
-		imx319_stop_streaming(imx319);
-
-	return 0;
-}
-
-static int __maybe_unused imx319_resume(struct device *dev)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	struct imx319 *imx319 = to_imx319(sd);
-	int ret;
-
-	if (imx319->streaming) {
-		ret = imx319_start_streaming(imx319);
-		if (ret)
-			goto error;
-	}
-
-	return 0;
-
-error:
-	imx319_stop_streaming(imx319);
-	imx319->streaming = 0;
 	return ret;
 }
 
···
 	mutex_destroy(&imx319->mutex);
 }
 
-static const struct dev_pm_ops imx319_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(imx319_suspend, imx319_resume)
-};
-
 static const struct acpi_device_id imx319_acpi_ids[] __maybe_unused = {
 	{ "SONY319A" },
 	{ /* sentinel */ }
···
 static struct i2c_driver imx319_i2c_driver = {
 	.driver = {
 		.name = "imx319",
-		.pm = &imx319_pm_ops,
 		.acpi_match_table = ACPI_PTR(imx319_acpi_ids),
 	},
 	.probe = imx319_probe,