Commit 9483a3f8 authored by Tim Harvey's avatar Tim Harvey Committed by Mauro Carvalho Chehab
Browse files

media: adv7180: add g_skip_frames support 



The adv7180 produces 1 to 2 frames of garbage before proper sync is
established. This allows V4L2 drivers and apps to skip those.

Signed-off-by: default avatarTim Harvey <tharvey@gateworks.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 32211e47

drivers/media/i2c/adv7180.c

+15 −0
Original line number Diff line number Diff line
@@ -180,6 +180,9 @@ 


#define V4L2_CID_ADV_FAST_SWITCH	(V4L2_CID_USER_ADV7180_BASE + 0x00)



/* Initial number of frames to skip to avoid possible garbage */

#define ADV7180_NUM_OF_SKIP_FRAMES       2



struct adv7180_state;



#define ADV7180_FLAG_RESET_POWERED	BIT(0)
@@ -769,6 +772,13 @@ static int adv7180_g_mbus_config(struct v4l2_subdev *sd, 
	return 0;

}



static int adv7180_get_skip_frames(struct v4l2_subdev *sd, u32 *frames)

{

	*frames = ADV7180_NUM_OF_SKIP_FRAMES;



	return 0;

}



static int adv7180_g_pixelaspect(struct v4l2_subdev *sd, struct v4l2_fract *aspect)

{

	struct adv7180_state *state = to_state(sd);
@@ -849,10 +859,15 @@ static const struct v4l2_subdev_pad_ops adv7180_pad_ops = { 
	.get_fmt = adv7180_get_pad_format,

};



static const struct v4l2_subdev_sensor_ops adv7180_sensor_ops = {

	.g_skip_frames = adv7180_get_skip_frames,

};



static const struct v4l2_subdev_ops adv7180_ops = {

	.core = &adv7180_core_ops,

	.video = &adv7180_video_ops,

	.pad = &adv7180_pad_ops,

	.sensor = &adv7180_sensor_ops,

};



static irqreturn_t adv7180_irq(int irq, void *devid)