diff options
Diffstat (limited to 'drivers/media/media-entity.c')
| -rw-r--r-- | drivers/media/media-entity.c | 94 |
1 files changed, 66 insertions, 28 deletions
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index e89d85a7d31b..e95070b3a3d4 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -46,25 +46,41 @@ static inline const char *intf_type(struct media_interface *intf) { switch (intf->type) { case MEDIA_INTF_T_DVB_FE: - return "frontend"; + return "dvb-frontend"; case MEDIA_INTF_T_DVB_DEMUX: - return "demux"; + return "dvb-demux"; case MEDIA_INTF_T_DVB_DVR: - return "DVR"; + return "dvb-dvr"; case MEDIA_INTF_T_DVB_CA: - return "CA"; + return "dvb-ca"; case MEDIA_INTF_T_DVB_NET: - return "dvbnet"; + return "dvb-net"; case MEDIA_INTF_T_V4L_VIDEO: - return "video"; + return "v4l-video"; case MEDIA_INTF_T_V4L_VBI: - return "vbi"; + return "v4l-vbi"; case MEDIA_INTF_T_V4L_RADIO: - return "radio"; + return "v4l-radio"; case MEDIA_INTF_T_V4L_SUBDEV: - return "v4l2-subdev"; + return "v4l-subdev"; case MEDIA_INTF_T_V4L_SWRADIO: - return "swradio"; + return "v4l-swradio"; + case MEDIA_INTF_T_ALSA_PCM_CAPTURE: + return "alsa-pcm-capture"; + case MEDIA_INTF_T_ALSA_PCM_PLAYBACK: + return "alsa-pcm-playback"; + case MEDIA_INTF_T_ALSA_CONTROL: + return "alsa-control"; + case MEDIA_INTF_T_ALSA_COMPRESS: + return "alsa-compress"; + case MEDIA_INTF_T_ALSA_RAWMIDI: + return "alsa-rawmidi"; + case MEDIA_INTF_T_ALSA_HWDEP: + return "alsa-hwdep"; + case MEDIA_INTF_T_ALSA_SEQUENCER: + return "alsa-sequencer"; + case MEDIA_INTF_T_ALSA_TIMER: + return "alsa-timer"; default: return "unknown-intf"; } @@ -73,8 +89,9 @@ static inline const char *intf_type(struct media_interface *intf) __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, int idx_max) { - ent_enum->bmap = kcalloc(DIV_ROUND_UP(idx_max, BITS_PER_LONG), - sizeof(long), GFP_KERNEL); + idx_max = ALIGN(idx_max, BITS_PER_LONG); + ent_enum->bmap = kcalloc(idx_max / BITS_PER_LONG, sizeof(long), + GFP_KERNEL); if (!ent_enum->bmap) return -ENOMEM; @@ -349,8 +366,8 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_next); * Pipeline management */ -__must_check int media_entity_pipeline_start(struct media_entity *entity, - struct media_pipeline *pipe) +__must_check int __media_entity_pipeline_start(struct media_entity *entity, + struct media_pipeline *pipe) { struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph *graph = &pipe->graph; @@ -358,8 +375,6 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_link *link; int ret; - mutex_lock(&mdev->graph_mutex); - if (!pipe->streaming_count++) { ret = media_entity_graph_walk_init(&pipe->graph, mdev); if (ret) @@ -440,8 +455,6 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, } } - mutex_unlock(&mdev->graph_mutex); - return 0; error: @@ -452,9 +465,12 @@ error: media_entity_graph_walk_start(graph, entity_err); while ((entity_err = media_entity_graph_walk_next(graph))) { - entity_err->stream_count--; - if (entity_err->stream_count == 0) - entity_err->pipe = NULL; + /* don't let the stream_count go negative */ + if (entity->stream_count > 0) { + entity_err->stream_count--; + if (entity_err->stream_count == 0) + entity_err->pipe = NULL; + } /* * We haven't increased stream_count further than this @@ -468,32 +484,53 @@ error_graph_walk_start: if (!--pipe->streaming_count) media_entity_graph_walk_cleanup(graph); - mutex_unlock(&mdev->graph_mutex); + return ret; +} +EXPORT_SYMBOL_GPL(__media_entity_pipeline_start); +__must_check int media_entity_pipeline_start(struct media_entity *entity, + struct media_pipeline *pipe) +{ + struct media_device *mdev = entity->graph_obj.mdev; + int ret; + + mutex_lock(&mdev->graph_mutex); + ret = __media_entity_pipeline_start(entity, pipe); + mutex_unlock(&mdev->graph_mutex); return ret; } EXPORT_SYMBOL_GPL(media_entity_pipeline_start); -void media_entity_pipeline_stop(struct media_entity *entity) +void __media_entity_pipeline_stop(struct media_entity *entity) { - struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph *graph = &entity->pipe->graph; struct media_pipeline *pipe = entity->pipe; - mutex_lock(&mdev->graph_mutex); WARN_ON(!pipe->streaming_count); media_entity_graph_walk_start(graph, entity); while ((entity = media_entity_graph_walk_next(graph))) { - entity->stream_count--; - if (entity->stream_count == 0) - entity->pipe = NULL; + /* don't let the stream_count go negative */ + if (entity->stream_count > 0) { + entity->stream_count--; + if (entity->stream_count == 0) + entity->pipe = NULL; + } } if (!--pipe->streaming_count) media_entity_graph_walk_cleanup(graph); +} +EXPORT_SYMBOL_GPL(__media_entity_pipeline_stop); + +void media_entity_pipeline_stop(struct media_entity *entity) +{ + struct media_device *mdev = entity->graph_obj.mdev; + + mutex_lock(&mdev->graph_mutex); + __media_entity_pipeline_stop(entity); mutex_unlock(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_entity_pipeline_stop); @@ -783,6 +820,7 @@ int __media_entity_setup_link(struct media_link *link, u32 flags) return ret; } +EXPORT_SYMBOL_GPL(__media_entity_setup_link); int media_entity_setup_link(struct media_link *link, u32 flags) { |