From: Shuah Khan <shuahkh@osg.samsung.com> To: mchehab@osg.samsung.com, tiwai@suse.com, clemens@ladisch.de, hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, javier@osg.samsung.com Cc: Shuah Khan <shuahkh@osg.samsung.com>, pawel@osciak.com, m.szyprowski@samsung.com, kyungmin.park@samsung.com, perex@perex.cz, arnd@arndb.de, dan.carpenter@oracle.com, tvboxspy@gmail.com, crope@iki.fi, ruchandani.tina@gmail.com, corbet@lwn.net, chehabrafael@gmail.com, k.kozlowski@samsung.com, stefanr@s5r6.in-berlin.de, inki.dae@samsung.com, jh1009.sung@samsung.com, elfring@users.sourceforge.net, prabhakar.csengg@gmail.com, sw0312.kim@samsung.com, p.zabel@pengutronix.de, ricardo.ribalda@gmail.com, labbott@fedoraproject.org, pierre-louis.bossart@linux.intel.com, ricard.wanderlof@axis.com, julian@jusst.de, takamichiho@gmail.com, dominic.sacre@gmx.de, misterpib@gmail.com, daniel@zonque.org, gtmkramer@xs4all.nl, normalperson@yhbt.net, joe@oampo.co.uk, linuxbugs@vittgam.net, johan@oljud.se, klock.android@gmail.com, nenggun.kim@samsung.com, j.anaszewski@samsung.com, geliangtang@163.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-api@vger.kernel.org, alsa-devel@alsa-project.org Subject: [PATCH v2 03/22] media: Media Controller register/unregister entity_notify API Date: Wed, 3 Feb 2016 21:03:35 -0700 [thread overview] Message-ID: <1ab0510de0a73669409523c1cee2984f4688f14c.1454557589.git.shuahkh@osg.samsung.com> (raw) In-Reply-To: <cover.1454557589.git.shuahkh@osg.samsung.com> In-Reply-To: <cover.1454557589.git.shuahkh@osg.samsung.com> Add new interfaces to register and unregister entity_notify hook to media device. These interfaces allow drivers to add hooks to take appropriate actions when new entities get added to a shared media device. For example, au0828 bridge driver registers an entity_notify hook to create links as needed between media graph nodes. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> --- drivers/media/media-device.c | 61 ++++++++++++++++++++++++++++++++++++++++++++ include/media/media-device.h | 25 ++++++++++++++++++ 2 files changed, 86 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 4d1c13d..1f5d67e 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -536,6 +536,7 @@ static void media_device_release(struct media_devnode *mdev) int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity) { + struct media_entity_notify *notify, *next; unsigned int i; int ret; @@ -575,6 +576,11 @@ int __must_check media_device_register_entity(struct media_device *mdev, media_gobj_create(mdev, MEDIA_GRAPH_PAD, &entity->pads[i].graph_obj); + /* invoke entity_notify callbacks */ + list_for_each_entry_safe(notify, next, &mdev->entity_notify, list) { + (notify)->notify(entity, notify->notify_data); + } + spin_unlock(&mdev->lock); return 0; @@ -608,6 +614,8 @@ static void __media_device_unregister_entity(struct media_entity *entity) /* Remove the entity */ media_gobj_destroy(&entity->graph_obj); + /* invoke entity_notify callbacks to handle entity removal?? */ + entity->graph_obj.mdev = NULL; } @@ -640,6 +648,7 @@ void media_device_init(struct media_device *mdev) INIT_LIST_HEAD(&mdev->interfaces); INIT_LIST_HEAD(&mdev->pads); INIT_LIST_HEAD(&mdev->links); + INIT_LIST_HEAD(&mdev->entity_notify); spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); ida_init(&mdev->entity_internal_idx); @@ -685,11 +694,59 @@ int __must_check __media_device_register(struct media_device *mdev, } EXPORT_SYMBOL_GPL(__media_device_register); +/** + * media_device_register_entity_notify - Register a media entity notify + * callback with a media device. When a new entity is registered, all + * the registered media_entity_notify callbacks are invoked. + * @mdev: The media device + * @nptr: The media_entity_notify + */ +int __must_check media_device_register_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr) +{ + spin_lock(&mdev->lock); + list_add_tail(&nptr->list, &mdev->entity_notify); + spin_unlock(&mdev->lock); + return 0; +} +EXPORT_SYMBOL_GPL(media_device_register_entity_notify); + +/** + * __media_device_unregister_entity_notify - Unregister a media entity notify + * callback with a media device. When a new entity is registered, all + * the registered media_entity_notify callbacks are invoked. + * @mdev: The media device + * @nptr: The media_entity_notify + * Non-locking version. Should be called with mdev->lock held. + */ +static void __media_device_unregister_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr) +{ + list_del(&nptr->list); +} + +/** + * media_device_unregister_entity_notify - Unregister a media entity notify + * callback with a media device. When a new entity is registered, all + * the registered media_entity_notify callbacks are invoked. + * @mdev: The media device + * @nptr: The media_entity_notify + */ +void media_device_unregister_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr) +{ + spin_lock(&mdev->lock); + __media_device_unregister_entity_notify(mdev, nptr); + spin_unlock(&mdev->lock); +} +EXPORT_SYMBOL_GPL(media_device_unregister_entity_notify); + void media_device_unregister(struct media_device *mdev) { struct media_entity *entity; struct media_entity *next; struct media_interface *intf, *tmp_intf; + struct media_entity_notify *notify, *nextp; if (mdev == NULL) return; @@ -706,6 +763,10 @@ void media_device_unregister(struct media_device *mdev) list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) __media_device_unregister_entity(entity); + /* Remove all entity_notify callbacks from the media device */ + list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list) + __media_device_unregister_entity_notify(mdev, notify); + /* Remove all interfaces from the media device */ list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, graph_obj.list) { diff --git a/include/media/media-device.h b/include/media/media-device.h index d385589..bad8242a 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -264,6 +264,12 @@ struct ida; struct device; +struct media_entity_notify { + struct list_head list; + void *notify_data; + void (*notify)(struct media_entity *entity, void *notify_data); +}; + /** * struct media_device - Media device * @dev: Parent device @@ -319,6 +325,9 @@ struct media_device { struct list_head pads; struct list_head links; + /* notify callback list invoked when a new entity is registered */ + struct list_head entity_notify; + /* Protects the graph objects creation/removal */ spinlock_t lock; /* Serializes graph operations. */ @@ -497,6 +506,11 @@ int __must_check media_device_register_entity(struct media_device *mdev, */ void media_device_unregister_entity(struct media_entity *entity); +int __must_check media_device_register_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr); +void media_device_unregister_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr); + /** * media_device_get_devres() - get media device as device resource * creates if one doesn't exist @@ -552,6 +566,17 @@ static inline int media_device_register_entity(struct media_device *mdev, static inline void media_device_unregister_entity(struct media_entity *entity) { } +static inline int media_device_register_entity_notify( + struct media_device *mdev, + struct media_entity_notify *nptr) +{ + return 0; +} +static inline void media_device_unregister_entity_notify( + struct media_device *mdev, + struct media_entity_notify *nptr) +{ +} static inline struct media_device *media_device_get_devres(struct device *dev) { return NULL; -- 2.5.0
WARNING: multiple messages have this Message-ID (diff)
From: Shuah Khan <shuahkh@osg.samsung.com> To: mchehab@osg.samsung.com, tiwai@suse.com, clemens@ladisch.de, hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, javier@osg.samsung.com Cc: Shuah Khan <shuahkh@osg.samsung.com>, pawel@osciak.com, m.szyprowski@samsung.com, kyungmin.park@samsung.com, perex@perex.cz, arnd@arndb.de, dan.carpenter@oracle.com, tvboxspy@gmail.com, crope@iki.fi, ruchandani.tina@gmail.com, corbet@lwn.net, chehabrafael@gmail.com, k.kozlowski@samsung.com, stefanr@s5r6.in-berlin.de, inki.dae@samsung.com, jh1009.sung@samsung.com, elfring@users.sourceforge.net, prabhakar.csengg@gmail.com, sw0312.kim@samsung.com, p.zabel@pengutronix.de, ricardo.ribalda@gmail.com, labbott@fedoraproject.org, pierre-louis.bossart@linux.intel.com, ricard.wanderlof@axis.com, julian@jusst.de, takamichiho@gmail.com, dominic.sacre@gmx.de, misterpib@gmail.com, daniel@zonque.org, gtmkramer@xs4all.nl, normalperson@yhbt.net, joe@oampo.co.uk, linuxbugs@vittgam.net, johan@oljud.se, klock.android@gmail.com, nenggun.kim@samsung.com, j.anaszewski@samsung.com, geliangtang Subject: [PATCH v2 03/22] media: Media Controller register/unregister entity_notify API Date: Wed, 3 Feb 2016 21:03:35 -0700 [thread overview] Message-ID: <1ab0510de0a73669409523c1cee2984f4688f14c.1454557589.git.shuahkh@osg.samsung.com> (raw) In-Reply-To: <cover.1454557589.git.shuahkh@osg.samsung.com> In-Reply-To: <cover.1454557589.git.shuahkh@osg.samsung.com> Add new interfaces to register and unregister entity_notify hook to media device. These interfaces allow drivers to add hooks to take appropriate actions when new entities get added to a shared media device. For example, au0828 bridge driver registers an entity_notify hook to create links as needed between media graph nodes. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> --- drivers/media/media-device.c | 61 ++++++++++++++++++++++++++++++++++++++++++++ include/media/media-device.h | 25 ++++++++++++++++++ 2 files changed, 86 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 4d1c13d..1f5d67e 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -536,6 +536,7 @@ static void media_device_release(struct media_devnode *mdev) int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity) { + struct media_entity_notify *notify, *next; unsigned int i; int ret; @@ -575,6 +576,11 @@ int __must_check media_device_register_entity(struct media_device *mdev, media_gobj_create(mdev, MEDIA_GRAPH_PAD, &entity->pads[i].graph_obj); + /* invoke entity_notify callbacks */ + list_for_each_entry_safe(notify, next, &mdev->entity_notify, list) { + (notify)->notify(entity, notify->notify_data); + } + spin_unlock(&mdev->lock); return 0; @@ -608,6 +614,8 @@ static void __media_device_unregister_entity(struct media_entity *entity) /* Remove the entity */ media_gobj_destroy(&entity->graph_obj); + /* invoke entity_notify callbacks to handle entity removal?? */ + entity->graph_obj.mdev = NULL; } @@ -640,6 +648,7 @@ void media_device_init(struct media_device *mdev) INIT_LIST_HEAD(&mdev->interfaces); INIT_LIST_HEAD(&mdev->pads); INIT_LIST_HEAD(&mdev->links); + INIT_LIST_HEAD(&mdev->entity_notify); spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); ida_init(&mdev->entity_internal_idx); @@ -685,11 +694,59 @@ int __must_check __media_device_register(struct media_device *mdev, } EXPORT_SYMBOL_GPL(__media_device_register); +/** + * media_device_register_entity_notify - Register a media entity notify + * callback with a media device. When a new entity is registered, all + * the registered media_entity_notify callbacks are invoked. + * @mdev: The media device + * @nptr: The media_entity_notify + */ +int __must_check media_device_register_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr) +{ + spin_lock(&mdev->lock); + list_add_tail(&nptr->list, &mdev->entity_notify); + spin_unlock(&mdev->lock); + return 0; +} +EXPORT_SYMBOL_GPL(media_device_register_entity_notify); + +/** + * __media_device_unregister_entity_notify - Unregister a media entity notify + * callback with a media device. When a new entity is registered, all + * the registered media_entity_notify callbacks are invoked. + * @mdev: The media device + * @nptr: The media_entity_notify + * Non-locking version. Should be called with mdev->lock held. + */ +static void __media_device_unregister_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr) +{ + list_del(&nptr->list); +} + +/** + * media_device_unregister_entity_notify - Unregister a media entity notify + * callback with a media device. When a new entity is registered, all + * the registered media_entity_notify callbacks are invoked. + * @mdev: The media device + * @nptr: The media_entity_notify + */ +void media_device_unregister_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr) +{ + spin_lock(&mdev->lock); + __media_device_unregister_entity_notify(mdev, nptr); + spin_unlock(&mdev->lock); +} +EXPORT_SYMBOL_GPL(media_device_unregister_entity_notify); + void media_device_unregister(struct media_device *mdev) { struct media_entity *entity; struct media_entity *next; struct media_interface *intf, *tmp_intf; + struct media_entity_notify *notify, *nextp; if (mdev == NULL) return; @@ -706,6 +763,10 @@ void media_device_unregister(struct media_device *mdev) list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) __media_device_unregister_entity(entity); + /* Remove all entity_notify callbacks from the media device */ + list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list) + __media_device_unregister_entity_notify(mdev, notify); + /* Remove all interfaces from the media device */ list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, graph_obj.list) { diff --git a/include/media/media-device.h b/include/media/media-device.h index d385589..bad8242a 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -264,6 +264,12 @@ struct ida; struct device; +struct media_entity_notify { + struct list_head list; + void *notify_data; + void (*notify)(struct media_entity *entity, void *notify_data); +}; + /** * struct media_device - Media device * @dev: Parent device @@ -319,6 +325,9 @@ struct media_device { struct list_head pads; struct list_head links; + /* notify callback list invoked when a new entity is registered */ + struct list_head entity_notify; + /* Protects the graph objects creation/removal */ spinlock_t lock; /* Serializes graph operations. */ @@ -497,6 +506,11 @@ int __must_check media_device_register_entity(struct media_device *mdev, */ void media_device_unregister_entity(struct media_entity *entity); +int __must_check media_device_register_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr); +void media_device_unregister_entity_notify(struct media_device *mdev, + struct media_entity_notify *nptr); + /** * media_device_get_devres() - get media device as device resource * creates if one doesn't exist @@ -552,6 +566,17 @@ static inline int media_device_register_entity(struct media_device *mdev, static inline void media_device_unregister_entity(struct media_entity *entity) { } +static inline int media_device_register_entity_notify( + struct media_device *mdev, + struct media_entity_notify *nptr) +{ + return 0; +} +static inline void media_device_unregister_entity_notify( + struct media_device *mdev, + struct media_entity_notify *nptr) +{ +} static inline struct media_device *media_device_get_devres(struct device *dev) { return NULL; -- 2.5.0
next prev parent reply other threads:[~2016-02-04 4:11 UTC|newest] Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-02-04 4:03 [PATCH v2 00/22] Sharing media resources across ALSA and au0828 drivers Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 01/22] uapi/media.h: Declare interface types for ALSA Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 8:38 ` Mauro Carvalho Chehab 2016-02-04 8:38 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` [PATCH v2 02/22] media: Add ALSA Media Controller function entities Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 8:40 ` Mauro Carvalho Chehab 2016-02-04 8:40 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` Shuah Khan [this message] 2016-02-04 4:03 ` [PATCH v2 03/22] media: Media Controller register/unregister entity_notify API Shuah Khan 2016-02-04 9:03 ` Mauro Carvalho Chehab 2016-02-04 9:03 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` [PATCH v2 04/22] media: Media Controller enable/disable source handler API Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 05/22] media: Media Controller export non locking __media_entity_setup_link() Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 06/22] media: Media Controller non-locking __media_entity_pipeline_start/stop() Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 9:18 ` Mauro Carvalho Chehab 2016-02-04 9:18 ` Mauro Carvalho Chehab 2016-02-04 15:00 ` Shuah Khan 2016-02-04 15:00 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 07/22] media: v4l-core add enable/disable source common interfaces Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 6:29 ` kbuild test robot 2016-02-04 6:29 ` kbuild test robot 2016-02-04 9:25 ` Mauro Carvalho Chehab 2016-02-04 9:25 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` [PATCH v2 08/22] media: Move au8522_media_pads enum to au8522.h from au8522_priv.h Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 09/22] media: au8522 change to create MC pad for ALSA Audio Out Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 10/22] media: Change v4l-core to check if source is free Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 11/22] media: dvb-frontend invoke enable/disable_source handlers Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 9:35 ` Mauro Carvalho Chehab 2016-02-04 9:35 ` Mauro Carvalho Chehab 2016-02-04 14:58 ` Shuah Khan 2016-02-04 14:58 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 12/22] media: au0828 video remove au0828_enable_analog_tuner() Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 9:37 ` Mauro Carvalho Chehab 2016-02-04 9:37 ` Mauro Carvalho Chehab 2016-02-04 14:49 ` Shuah Khan 2016-02-04 14:49 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 13/22] media: au0828 video change to use v4l_enable_media_source() Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 10:00 ` Mauro Carvalho Chehab 2016-02-04 10:00 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` [PATCH v2 14/22] media: au0828 change to use Managed Media Controller API Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 10:05 ` Mauro Carvalho Chehab 2016-02-04 10:05 ` Mauro Carvalho Chehab 2016-02-04 10:08 ` Mauro Carvalho Chehab 2016-02-04 10:08 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` [PATCH v2 15/22] media: au0828 handle media_init and media_register window Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 16/22] media: au0828 create tuner to decoder link in disabled state Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 17/22] media: au0828 disable tuner to demod link Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 18/22] media: au0828 Use au8522_media_pads enum for pad defines Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 19/22] media: au0828-core register entity_notify hook Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 4:03 ` [PATCH v2 20/22] media: au0828 add enable, disable source handlers Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 10:26 ` Mauro Carvalho Chehab 2016-02-04 10:26 ` Mauro Carvalho Chehab 2016-02-08 22:42 ` Shuah Khan 2016-02-08 22:42 ` Shuah Khan 2016-02-08 23:00 ` Shuah Khan 2016-02-08 23:00 ` Shuah Khan 2016-02-09 13:42 ` Mauro Carvalho Chehab 2016-02-09 13:42 ` Mauro Carvalho Chehab 2016-02-09 10:51 ` Mauro Carvalho Chehab 2016-02-09 10:51 ` Mauro Carvalho Chehab 2016-02-04 4:03 ` [PATCH v2 21/22] sound/usb: Use Media Controller API to share media resources Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 10:36 ` Mauro Carvalho Chehab 2016-02-04 10:36 ` Mauro Carvalho Chehab 2016-02-04 10:46 ` Takashi Iwai 2016-02-04 10:46 ` Takashi Iwai 2016-02-07 11:25 ` kbuild test robot 2016-02-07 11:25 ` kbuild test robot 2016-02-04 4:03 ` [PATCH v2 22/22] media: Ensure media device unregister is done only once Shuah Khan 2016-02-04 4:03 ` Shuah Khan 2016-02-04 10:40 ` Mauro Carvalho Chehab 2016-02-04 10:40 ` Mauro Carvalho Chehab 2016-02-04 10:54 ` [PATCH v2 00/22] Sharing media resources across ALSA and au0828 drivers Mauro Carvalho Chehab 2016-02-04 10:54 ` Mauro Carvalho Chehab
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