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media: camss: vfe: Get line pointer as container of video_out

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Simplify getting of the line pointer by using the container_of
macro instead of traversing media controller links.

Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Todor Tomov 2018-07-25 12:38:22 -04:00 committed by Mauro Carvalho Chehab
parent c9896b6551
commit a93e5f4fc8
1 changed files with 4 additions and 34 deletions
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38
drivers/media/platform/qcom/camss/camss-vfe.c
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@ -2037,26 +2037,6 @@ exit:
mutex_unlock(&vfe->power_lock);
}
/*
* vfe_video_pad_to_line - Get pointer to VFE line by media pad
* @pad: Media pad
*
* Return pointer to vfe line structure
*/
static struct vfe_line *vfe_video_pad_to_line(struct media_pad *pad)
{
struct media_pad *vfe_pad;
struct v4l2_subdev *subdev;
vfe_pad = media_entity_remote_pad(pad);
if (vfe_pad == NULL)
return NULL;
subdev = media_entity_to_v4l2_subdev(vfe_pad->entity);
return container_of(subdev, struct vfe_line, subdev);
}
/*
* vfe_queue_buffer - Add empty buffer
* @vid: Video device structure
@ -2070,16 +2050,11 @@ static struct vfe_line *vfe_video_pad_to_line(struct media_pad *pad)
static int vfe_queue_buffer(struct camss_video *vid,
struct camss_buffer *buf)
{
struct vfe_device *vfe = &vid->camss->vfe;
struct vfe_line *line;
struct vfe_line *line = container_of(vid, struct vfe_line, video_out);
struct vfe_device *vfe = to_vfe(line);
struct vfe_output *output;
unsigned long flags;
line = vfe_video_pad_to_line(&vid->pad);
if (!line) {
dev_err(to_device(vfe), "Can not queue buffer\n");
return -1;
}
output = &line->output;
spin_lock_irqsave(&vfe->output_lock, flags);
@ -2104,16 +2079,11 @@ static int vfe_queue_buffer(struct camss_video *vid,
static int vfe_flush_buffers(struct camss_video *vid,
enum vb2_buffer_state state)
{
struct vfe_device *vfe = &vid->camss->vfe;
struct vfe_line *line;
struct vfe_line *line = container_of(vid, struct vfe_line, video_out);
struct vfe_device *vfe = to_vfe(line);
struct vfe_output *output;
unsigned long flags;
line = vfe_video_pad_to_line(&vid->pad);
if (!line) {
dev_err(to_device(vfe), "Can not flush buffers\n");
return -1;
}
output = &line->output;
spin_lock_irqsave(&vfe->output_lock, flags);