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[media] v4l: omap3isp: Use media entity enumeration interface 

Instead of using a bitmap directly in a driver, use the new media entity
enumeration interface to perform the same.

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 11:32:30 -02:00 committed by Mauro Carvalho Chehab
parent 74a4133079
commit 17d3d4058a
5 changed files with 33 additions and 19 deletions
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21
drivers/media/platform/omap3isp/isp.c
View File

@ -896,7 +896,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
* starting entities if the pipeline won't start anyway (those entities
* would then likely fail to stop, making the problem worse).
*/
if (pipe->entities & isp->crashed)
if (media_entity_enum_intersects(&pipe->ent_enum, &isp->crashed))
return -EIO;
spin_lock_irqsave(&pipe->lock, flags);
@ -989,7 +989,6 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
struct v4l2_subdev *subdev;
int failure = 0;
int ret;
u32 id;
/*
* We need to stop all the modules after CCDC first or they'll
@ -1041,10 +1040,9 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
if (ret) {
dev_info(isp->dev, "Unable to stop %s\n", subdev->name);
isp->stop_failure = true;
if (subdev == &isp->isp_prev.subdev) {
id = media_entity_id(&subdev->entity);
isp->crashed |= 1U << id;
}
if (subdev == &isp->isp_prev.subdev)
media_entity_enum_set(&isp->crashed,
&subdev->entity);
failure = -ETIMEDOUT;
}
}
@ -1250,7 +1248,7 @@ static int isp_reset(struct isp_device *isp)
}
isp->stop_failure = false;
isp->crashed = 0;
media_entity_enum_zero(&isp->crashed);
return 0;
}
@ -1661,7 +1659,8 @@ static void __omap3isp_put(struct isp_device *isp, bool save_ctx)
/* Reset the ISP if an entity has failed to stop. This is the
* only way to recover from such conditions.
*/
if (isp->crashed || isp->stop_failure)
if (!media_entity_enum_empty(&isp->crashed) ||
isp->stop_failure)
isp_reset(isp);
isp_disable_clocks(isp);
}
@ -2219,6 +2218,8 @@ static int isp_remove(struct platform_device *pdev)
isp_detach_iommu(isp);
__omap3isp_put(isp, false);
media_entity_enum_cleanup(&isp->crashed);
return 0;
}
@ -2366,6 +2367,10 @@ static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async)
struct isp_bus_cfg *bus;
int ret;
ret = media_entity_enum_init(&isp->crashed, &isp->media_dev);
if (ret)
return ret;
list_for_each_entry(sd, &v4l2_dev->subdevs, list) {
/* Only try to link entities whose interface was set on bound */
if (sd->host_priv) {

5
drivers/media/platform/omap3isp/isp.h
View File

@ -17,6 +17,7 @@
#ifndef OMAP3_ISP_CORE_H
#define OMAP3_ISP_CORE_H
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <linux/clk-provider.h>
@ -152,7 +153,7 @@ struct isp_xclk {
* @stat_lock: Spinlock for handling statistics
* @isp_mutex: Mutex for serializing requests to ISP.
* @stop_failure: Indicates that an entity failed to stop.
* @crashed: Bitmask of crashed entities (indexed by entity ID)
* @crashed: Crashed ent_enum
* @has_context: Context has been saved at least once and can be restored.
* @ref_count: Reference count for handling multiple ISP requests.
* @cam_ick: Pointer to camera interface clock structure.
@ -195,7 +196,7 @@ struct isp_device {
spinlock_t stat_lock; /* common lock for statistic drivers */
struct mutex isp_mutex; /* For handling ref_count field */
bool stop_failure;
u32 crashed;
struct media_entity_enum crashed;
int has_context;
int ref_count;
unsigned int autoidle;

2
drivers/media/platform/omap3isp/ispccdc.c
View File

@ -1608,7 +1608,7 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
/* Wait for the CCDC to become idle. */
if (ccdc_sbl_wait_idle(ccdc, 1000)) {
dev_info(isp->dev, "CCDC won't become idle!\n");
isp->crashed |= 1U << media_entity_id(&ccdc->subdev.entity);
media_entity_enum_set(&isp->crashed, &ccdc->subdev.entity);
omap3isp_pipeline_cancel_stream(pipe);
return 0;
}

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

@ -241,7 +241,7 @@ static int isp_video_get_graph_data(struct isp_video *video,
while ((entity = media_entity_graph_walk_next(&graph))) {
struct isp_video *__video;
pipe->entities |= 1 << media_entity_id(entity);
media_entity_enum_set(&pipe->ent_enum, entity);
if (far_end != NULL)
continue;
@ -901,7 +901,6 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
struct v4l2_ext_control ctrl;
unsigned int i;
int ret;
u32 id;
/* Memory-to-memory pipelines have no external subdev. */
if (pipe->input != NULL)
@ -909,7 +908,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
for (i = 0; i < ARRAY_SIZE(ents); i++) {
/* Is the entity part of the pipeline? */
if (!(pipe->entities & (1 << media_entity_id(ents[i]))))
if (!media_entity_enum_test(&pipe->ent_enum, ents[i]))
continue;
/* ISP entities have always sink pad == 0. Find source. */
@ -961,8 +960,8 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
pipe->external_rate = ctrl.value64;
id = media_entity_id(&isp->isp_ccdc.subdev.entity);
if (pipe->entities & (1 << id)) {
if (media_entity_enum_test(&pipe->ent_enum,
&isp->isp_ccdc.subdev.entity)) {
unsigned int rate = UINT_MAX;
/*
* Check that maximum allowed CCDC pixel rate isn't
@ -1028,7 +1027,9 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
pipe = video->video.entity.pipe
? to_isp_pipeline(&video->video.entity) : &video->pipe;
pipe->entities = 0;
ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev);
if (ret)
goto err_enum_init;
/* TODO: Implement PM QoS */
pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]);
@ -1102,6 +1103,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
}
mutex_unlock(&video->stream_lock);
return 0;
err_set_stream:
@ -1122,7 +1124,11 @@ err_pipeline_start:
INIT_LIST_HEAD(&video->dmaqueue);
video->queue = NULL;
media_entity_enum_cleanup(&pipe->ent_enum);
err_enum_init:
mutex_unlock(&video->stream_lock);
return ret;
}
@ -1174,6 +1180,8 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
/* TODO: Implement PM QoS */
media_entity_pipeline_stop(&video->video.entity);
media_entity_enum_cleanup(&pipe->ent_enum);
done:
mutex_unlock(&video->stream_lock);
return 0;

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

@ -80,7 +80,7 @@ enum isp_pipeline_state {
* struct isp_pipeline - An ISP hardware pipeline
* @field: The field being processed by the pipeline
* @error: A hardware error occurred during capture
* @entities: Bitmask of entities in the pipeline (indexed by entity ID)
* @ent_enum: Entities in the pipeline
*/
struct isp_pipeline {
struct media_pipeline pipe;
@ -89,7 +89,7 @@ struct isp_pipeline {
enum isp_pipeline_stream_state stream_state;
struct isp_video *input;
struct isp_video *output;
u32 entities;
struct media_entity_enum ent_enum;
unsigned long l3_ick;
unsigned int max_rate;
enum v4l2_field field;