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Commit 7784b1d2 authored by Marco Felsch's avatar Marco Felsch Committed by Mauro Carvalho Chehab
Browse files

media: mt9m111: add s_stream callback 



Add callback to check if we are already streaming. Now other callbacks
can check the state and return -EBUSY if we already streaming.

Signed-off-by: default avatarMarco Felsch <m.felsch@pengutronix.de>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 4f9d7225

drivers/media/i2c/mt9m111.c

+10 −0
Original line number Diff line number Diff line
@@ -220,6 +220,7 @@ struct mt9m111 { 
	int power_count;

	const struct mt9m111_datafmt *fmt;

	int lastpage;	/* PageMap cache value */

	bool is_streaming;

#ifdef CONFIG_MEDIA_CONTROLLER

	struct media_pad pad;

#endif
@@ -910,6 +911,14 @@ static int mt9m111_enum_mbus_code(struct v4l2_subdev *sd, 
	return 0;

}



static int mt9m111_s_stream(struct v4l2_subdev *sd, int enable)

{

	struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);



	mt9m111->is_streaming = !!enable;

	return 0;

}



static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,

				struct v4l2_mbus_config *cfg)

{
@@ -923,6 +932,7 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, 


static const struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {

	.g_mbus_config	= mt9m111_g_mbus_config,

	.s_stream	= mt9m111_s_stream,

};



static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = {