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Subject[PATCH v3 13/35] media: camss: vfe: Get line pointer as container of video_out
Date
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>
---
drivers/media/platform/qcom/camss/camss-vfe.c | 38 +++------------------------
1 file changed, 4 insertions(+), 34 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 51ad3f8..77167f1 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -2038,26 +2038,6 @@ static void vfe_put(struct vfe_device *vfe)
}

/*
- * 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
* @buf: Buffer to be enqueued
@@ -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);
--
2.7.4
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