leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[media] v4l: omap3isp: Use the new media graph walk interface

Browse Source 
The media graph walk requires initialisation and cleanup soon. Update the
users to perform the soon necessary API calls.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sakari Ailus 2015-12-16 11:32:24 -02:00 committed by Mauro Carvalho Chehab
parent 106b9907c3
commit 28461451c0
4 changed files with 61 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
drivers/media/platform/omap3isp/isp.c
View File

@ -683,14 +683,14 @@ static irqreturn_t isp_isr(int irq, void *_isp)
*
* Return the total number of users of all video device nodes in the pipeline.
*/
static int isp_pipeline_pm_use_count(struct media_entity *entity)
static int isp_pipeline_pm_use_count(struct media_entity *entity,
struct media_entity_graph *graph)
{
struct media_entity_graph graph;
int use = 0;
media_entity_graph_walk_start(&graph, entity);
media_entity_graph_walk_start(graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
while ((entity = media_entity_graph_walk_next(graph))) {
if (is_media_entity_v4l2_io(entity))
use += entity->use_count;
}
@ -742,27 +742,27 @@ static int isp_pipeline_pm_power_one(struct media_entity *entity, int change)
*
* Return 0 on success or a negative error code on failure.
*/
static int isp_pipeline_pm_power(struct media_entity *entity, int change)
static int isp_pipeline_pm_power(struct media_entity *entity, int change,
struct media_entity_graph *graph)
{
struct media_entity_graph graph;
struct media_entity *first = entity;
int ret = 0;
if (!change)
return 0;
media_entity_graph_walk_start(&graph, entity);
media_entity_graph_walk_start(graph, entity);
while (!ret && (entity = media_entity_graph_walk_next(&graph)))
while (!ret && (entity = media_entity_graph_walk_next(graph)))
if (is_media_entity_v4l2_subdev(entity))
ret = isp_pipeline_pm_power_one(entity, change);
if (!ret)
return 0;
return ret;
media_entity_graph_walk_start(&graph, first);
media_entity_graph_walk_start(graph, first);
while ((first = media_entity_graph_walk_next(&graph))
while ((first = media_entity_graph_walk_next(graph))
&& first != entity)
if (is_media_entity_v4l2_subdev(first))
isp_pipeline_pm_power_one(first, -change);
@ -782,7 +782,8 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change)
* off is assumed to never fail. No failure can occur when the use parameter is
* set to 0.
*/
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use,
struct media_entity_graph *graph)
{
int change = use ? 1 : -1;
int ret;
@ -794,7 +795,7 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
WARN_ON(entity->use_count < 0);
/* Apply power change to connected non-nodes. */
ret = isp_pipeline_pm_power(entity, change);
ret = isp_pipeline_pm_power(entity, change, graph);
if (ret < 0)
entity->use_count -= change;
@ -820,35 +821,49 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
static int isp_pipeline_link_notify(struct media_link *link, u32 flags,
unsigned int notification)
{
struct media_entity_graph *graph =
&container_of(link->graph_obj.mdev, struct isp_device,
media_dev)->pm_count_graph;
struct media_entity *source = link->source->entity;
struct media_entity *sink = link->sink->entity;
int source_use = isp_pipeline_pm_use_count(source);
int sink_use = isp_pipeline_pm_use_count(sink);
int ret;
int source_use;
int sink_use;
int ret = 0;
if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) {
ret = media_entity_graph_walk_init(graph,
link->graph_obj.mdev);
if (ret)
return ret;
}
source_use = isp_pipeline_pm_use_count(source, graph);
sink_use = isp_pipeline_pm_use_count(sink, graph);
if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
!(flags & MEDIA_LNK_FL_ENABLED)) {
/* Powering off entities is assumed to never fail. */
isp_pipeline_pm_power(source, -sink_use);
isp_pipeline_pm_power(sink, -source_use);
isp_pipeline_pm_power(source, -sink_use, graph);
isp_pipeline_pm_power(sink, -source_use, graph);
return 0;
}
if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH &&
(flags & MEDIA_LNK_FL_ENABLED)) {
ret = isp_pipeline_pm_power(source, sink_use);
ret = isp_pipeline_pm_power(source, sink_use, graph);
if (ret < 0)
return ret;
ret = isp_pipeline_pm_power(sink, source_use);
ret = isp_pipeline_pm_power(sink, source_use, graph);
if (ret < 0)
isp_pipeline_pm_power(source, -sink_use);
return ret;
isp_pipeline_pm_power(source, -sink_use, graph);
}
return 0;
if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH)
media_entity_graph_walk_cleanup(graph);
return ret;
}
/* -----------------------------------------------------------------------------

4
drivers/media/platform/omap3isp/isp.h
View File

@ -176,6 +176,7 @@ struct isp_device {
struct v4l2_device v4l2_dev;
struct v4l2_async_notifier notifier;
struct media_device media_dev;
struct media_entity_graph pm_count_graph;
struct device *dev;
u32 revision;
@ -265,7 +266,8 @@ void omap3isp_subclk_enable(struct isp_device *isp,
void omap3isp_subclk_disable(struct isp_device *isp,
enum isp_subclk_resource res);
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use);
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use,
struct media_entity_graph *graph);
int omap3isp_register_entities(struct platform_device *pdev,
struct v4l2_device *v4l2_dev);

20
drivers/media/platform/omap3isp/ispvideo.c
View File

@ -227,8 +227,15 @@ static int isp_video_get_graph_data(struct isp_video *video,
struct media_entity *entity = &video->video.entity;
struct media_device *mdev = entity->graph_obj.mdev;
struct isp_video *far_end = NULL;
int ret;
mutex_lock(&mdev->graph_mutex);
ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev);
if (ret) {
mutex_unlock(&mdev->graph_mutex);
return ret;
}
media_entity_graph_walk_start(&graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
@ -252,6 +259,8 @@ static int isp_video_get_graph_data(struct isp_video *video,
mutex_unlock(&mdev->graph_mutex);
media_entity_graph_walk_cleanup(&graph);
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
pipe->input = far_end;
pipe->output = video;
@ -1244,7 +1253,12 @@ static int isp_video_open(struct file *file)
goto done;
}
ret = omap3isp_pipeline_pm_use(&video->video.entity, 1);
ret = media_entity_graph_walk_init(&handle->graph,
&video->isp->media_dev);
if (ret)
goto done;
ret = omap3isp_pipeline_pm_use(&video->video.entity, 1, &handle->graph);
if (ret < 0) {
omap3isp_put(video->isp);
goto done;
@ -1275,6 +1289,7 @@ static int isp_video_open(struct file *file)
done:
if (ret < 0) {
v4l2_fh_del(&handle->vfh);
media_entity_graph_walk_cleanup(&handle->graph);
kfree(handle);
}
@ -1294,7 +1309,8 @@ static int isp_video_release(struct file *file)
vb2_queue_release(&handle->queue);
mutex_unlock(&video->queue_lock);
omap3isp_pipeline_pm_use(&video->video.entity, 0);
omap3isp_pipeline_pm_use(&video->video.entity, 0, &handle->graph);
media_entity_graph_walk_cleanup(&handle->graph);
/* Release the file handle. */
v4l2_fh_del(vfh);

1
drivers/media/platform/omap3isp/ispvideo.h
View File

@ -189,6 +189,7 @@ struct isp_video_fh {
struct vb2_queue queue;
struct v4l2_format format;
struct v4l2_fract timeperframe;
struct media_entity_graph graph;
};
#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh)