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[media] rcar-vin: refactor pad lookup code

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The pad lookup code can be broken out to increase readability and to
reduce code duplication.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Niklas Söderlund 2017-05-23 21:15:29 -03:00 committed by Mauro Carvalho Chehab
parent 1eb36419ec
commit 5de75b1dec
1 changed files with 21 additions and 15 deletions
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36
drivers/media/platform/rcar-vin/rcar-v4l2.c
View File

@ -870,11 +870,25 @@ static void rvin_notify(struct v4l2_subdev *sd,
}
}
static int rvin_find_pad(struct v4l2_subdev *sd, int direction)
{
unsigned int pad;
if (sd->entity.num_pads <= 1)
return 0;
for (pad = 0; pad < sd->entity.num_pads; pad++)
if (sd->entity.pads[pad].flags & direction)
return pad;
return -EINVAL;
}
int rvin_v4l2_probe(struct rvin_dev *vin)
{
struct video_device *vdev = &vin->vdev;
struct v4l2_subdev *sd = vin_to_source(vin);
int pad_idx, ret;
int ret;
v4l2_set_subdev_hostdata(sd, vin);
@ -920,21 +934,13 @@ int rvin_v4l2_probe(struct rvin_dev *vin)
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
V4L2_CAP_READWRITE;
vin->digital.source_pad = 0;
for (pad_idx = 0; pad_idx < sd->entity.num_pads; pad_idx++)
if (sd->entity.pads[pad_idx].flags == MEDIA_PAD_FL_SOURCE)
break;
if (pad_idx >= sd->entity.num_pads)
return -EINVAL;
ret = rvin_find_pad(sd, MEDIA_PAD_FL_SOURCE);
if (ret < 0)
return ret;
vin->digital.source_pad = ret;
vin->digital.source_pad = pad_idx;
vin->digital.sink_pad = 0;
for (pad_idx = 0; pad_idx < sd->entity.num_pads; pad_idx++)
if (sd->entity.pads[pad_idx].flags == MEDIA_PAD_FL_SINK) {
vin->digital.sink_pad = pad_idx;
break;
}
ret = rvin_find_pad(sd, MEDIA_PAD_FL_SINK);
vin->digital.sink_pad = ret < 0 ? 0 : ret;
vin->format.pixelformat = RVIN_DEFAULT_FORMAT;
rvin_reset_format(vin);