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[media] omap3isp: Add resizer data rate configuration to resizer_link_validate 

The configuration of many other blocks depend on resizer maximum data rate.
Get the value from resizer at link validation time.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sakari Ailus 2013-10-02 20:17:53 -03:00 committed by Mauro Carvalho Chehab
parent 8dad936ab3
commit 2e1ab9cb94
2 changed files with 15 additions and 54 deletions
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15
drivers/media/platform/omap3isp/ispresizer.c
View File

@ -1532,6 +1532,20 @@ static int resizer_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
return 0;
}
static int resizer_link_validate(struct v4l2_subdev *sd,
struct media_link *link,
struct v4l2_subdev_format *source_fmt,
struct v4l2_subdev_format *sink_fmt)
{
struct isp_res_device *res = v4l2_get_subdevdata(sd);
struct isp_pipeline *pipe = to_isp_pipeline(&sd->entity);
omap3isp_resizer_max_rate(res, &pipe->max_rate);
return v4l2_subdev_link_validate_default(sd, link,
source_fmt, sink_fmt);
}
/*
* resizer_init_formats - Initialize formats on all pads
* @sd: ISP resizer V4L2 subdevice
@ -1570,6 +1584,7 @@ static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = {
.set_fmt = resizer_set_format,
.get_selection = resizer_get_selection,
.set_selection = resizer_set_selection,
.link_validate = resizer_link_validate,
};
/* subdev operations */

54
drivers/media/platform/omap3isp/ispvideo.c
View File

@ -278,55 +278,6 @@ static int isp_video_get_graph_data(struct isp_video *video,
return 0;
}
/*
* Validate a pipeline by checking both ends of all links for format
* discrepancies.
*
* Compute the minimum time per frame value as the maximum of time per frame
* limits reported by every block in the pipeline.
*
* Return 0 if all formats match, or -EPIPE if at least one link is found with
* different formats on its two ends or if the pipeline doesn't start with a
* video source (either a subdev with no input pad, or a non-subdev entity).
*/
static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
{
struct isp_device *isp = pipe->output->isp;
struct media_pad *pad;
struct v4l2_subdev *subdev;
subdev = isp_video_remote_subdev(pipe->output, NULL);
if (subdev == NULL)
return -EPIPE;
while (1) {
/* Retrieve the sink format */
pad = &subdev->entity.pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
/* Update the maximum frame rate */
if (subdev == &isp->isp_res.subdev)
omap3isp_resizer_max_rate(&isp->isp_res,
&pipe->max_rate);
/* Retrieve the source format. Return an error if no source
* entity can be found, and stop checking the pipeline if the
* source entity isn't a subdev.
*/
pad = media_entity_remote_pad(pad);
if (pad == NULL)
return -EPIPE;
if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
subdev = media_entity_to_v4l2_subdev(pad->entity);
}
return 0;
}
static int
__isp_video_get_format(struct isp_video *video, struct v4l2_format *format)
{
@ -1054,11 +1005,6 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
if (ret < 0)
goto err_check_format;
/* Validate the pipeline and update its state. */
ret = isp_video_validate_pipeline(pipe);
if (ret < 0)
goto err_check_format;
pipe->error = false;
spin_lock_irqsave(&pipe->lock, flags);