diff options
| author | Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> | 2017-05-24 02:15:29 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-06 19:37:44 +0200 |
| commit | 5de75b1decb6085f5f91462735ffbe0dd952dc9f (patch) | |
| tree | 0a74a2453f44b0170e32860eb501e1640a15489b /drivers/media/platform/rcar-vin | |
| parent | [media] rcar-vin: move subdev source and sink pad index to rvin_graph_entity (diff) | |
| download | linux-5de75b1decb6085f5f91462735ffbe0dd952dc9f.tar.xz linux-5de75b1decb6085f5f91462735ffbe0dd952dc9f.zip | |
[media] rcar-vin: refactor pad lookup code
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>
Diffstat (limited to 'drivers/media/platform/rcar-vin')
| -rw-r--r-- | drivers/media/platform/rcar-vin/rcar-v4l2.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c index 1a75191539b0..90ea582fb48e 100644 --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c @@ -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; - - vin->digital.source_pad = pad_idx; + ret = rvin_find_pad(sd, MEDIA_PAD_FL_SOURCE); + if (ret < 0) + return ret; + vin->digital.source_pad = ret; - 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); |