From: Mauro Carvalho Chehab <mchehab@osg.samsung.com> To: Shuah Khan <shuahkh@osg.samsung.com> Cc: tiwai@suse.com, clemens@ladisch.de, hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, javier@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, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-api@vger.kernel.org, alsa-devel@alsa-project.org Subject: Re: [PATCH 04/31] media: Media Controller enable/disable source handler API Date: Thu, 28 Jan 2016 13:19:22 -0200 [thread overview] Message-ID: <20160128131922.29e2a504@recife.lan> (raw) In-Reply-To: <d8d65a0188b05f3e799400c745584a02bc9b7548.1452105878.git.shuahkh@osg.samsung.com> Em Wed, 6 Jan 2016 13:26:53 -0700 Shuah Khan <shuahkh@osg.samsung.com> escreveu: > Add new fields to struct media_device to add enable_source, and > disable_source handlers, and source_priv to stash driver private > data that is need to run these handlers. The enable_source handler > finds source entity for the passed in entity and check if it is > available, and activate the link using __media_entity_setup_link() > interface. Bridge driver is expected to implement and set these > handlers and private data when media_device is registered or when > bridge driver finds the media_device during probe. This is to enable > the use-case to find tuner entity connected to the decoder entity and > check if it is available, and activate it and start pipeline between > the source and the entity. The disable_source handler deactivates the > link and stops the pipeline. This handler can be invoked from the > media core (v4l-core, dvb-core) as well as other drivers such as ALSA > that control the media device. > > Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> > --- > include/media/media-device.h | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/include/media/media-device.h b/include/media/media-device.h > index 6520d1c..04b6c2e 100644 > --- a/include/media/media-device.h > +++ b/include/media/media-device.h > @@ -333,6 +333,25 @@ struct media_device { > /* Serializes graph operations. */ > struct mutex graph_mutex; > > + /* Handlers to find source entity for the sink entity and > + * check if it is available, and activate the link using > + * media_entity_setup_link() interface and start pipeline > + * from the source to the entity. > + * Bridge driver is expected to implement and set the > + * handler when media_device is registered or when > + * bridge driver finds the media_device during probe. > + * Bridge driver sets source_priv with information > + * necessary to run enable/disable source handlers. > + * > + * Use-case: find tuner entity connected to the decoder > + * entity and check if it is available, and activate the > + * using media_entity_setup_link() if it is available. > + */ > + void *source_priv; > + int (*enable_source)(struct media_entity *entity, > + struct media_pipeline *pipe); > + void (*disable_source)(struct media_entity *entity); Please document the new fields at the right place (Kernel-doc comment declared before the struct). Is this used by the media core? If so, please but the implementation here, to make it clearer why we need those things. > + > int (*link_notify)(struct media_link *link, u32 flags, > unsigned int notification); > };
WARNING: multiple messages have this Message-ID (diff)
From: Mauro Carvalho Chehab <mchehab@osg.samsung.com> To: Shuah Khan <shuahkh@osg.samsung.com> Cc: tiwai@suse.com, clemens@ladisch.de, hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, javier@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@vittga Subject: Re: [PATCH 04/31] media: Media Controller enable/disable source handler API Date: Thu, 28 Jan 2016 13:19:22 -0200 [thread overview] Message-ID: <20160128131922.29e2a504@recife.lan> (raw) In-Reply-To: <d8d65a0188b05f3e799400c745584a02bc9b7548.1452105878.git.shuahkh@osg.samsung.com> Em Wed, 6 Jan 2016 13:26:53 -0700 Shuah Khan <shuahkh@osg.samsung.com> escreveu: > Add new fields to struct media_device to add enable_source, and > disable_source handlers, and source_priv to stash driver private > data that is need to run these handlers. The enable_source handler > finds source entity for the passed in entity and check if it is > available, and activate the link using __media_entity_setup_link() > interface. Bridge driver is expected to implement and set these > handlers and private data when media_device is registered or when > bridge driver finds the media_device during probe. This is to enable > the use-case to find tuner entity connected to the decoder entity and > check if it is available, and activate it and start pipeline between > the source and the entity. The disable_source handler deactivates the > link and stops the pipeline. This handler can be invoked from the > media core (v4l-core, dvb-core) as well as other drivers such as ALSA > that control the media device. > > Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> > --- > include/media/media-device.h | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/include/media/media-device.h b/include/media/media-device.h > index 6520d1c..04b6c2e 100644 > --- a/include/media/media-device.h > +++ b/include/media/media-device.h > @@ -333,6 +333,25 @@ struct media_device { > /* Serializes graph operations. */ > struct mutex graph_mutex; > > + /* Handlers to find source entity for the sink entity and > + * check if it is available, and activate the link using > + * media_entity_setup_link() interface and start pipeline > + * from the source to the entity. > + * Bridge driver is expected to implement and set the > + * handler when media_device is registered or when > + * bridge driver finds the media_device during probe. > + * Bridge driver sets source_priv with information > + * necessary to run enable/disable source handlers. > + * > + * Use-case: find tuner entity connected to the decoder > + * entity and check if it is available, and activate the > + * using media_entity_setup_link() if it is available. > + */ > + void *source_priv; > + int (*enable_source)(struct media_entity *entity, > + struct media_pipeline *pipe); > + void (*disable_source)(struct media_entity *entity); Please document the new fields at the right place (Kernel-doc comment declared before the struct). Is this used by the media core? If so, please but the implementation here, to make it clearer why we need those things. > + > int (*link_notify)(struct media_link *link, u32 flags, > unsigned int notification); > };
next prev parent reply other threads:[~2016-01-28 15:19 UTC|newest] Thread overview: 157+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-01-06 20:26 [PATCH 00/31] Sharing media resources across ALSA and au0828 drivers Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 01/31] uapi/media.h: Declare interface types for ALSA Shuah Khan 2016-01-28 14:59 ` Mauro Carvalho Chehab 2016-01-28 14:59 ` Mauro Carvalho Chehab 2016-02-01 16:07 ` Shuah Khan 2016-02-01 16:07 ` Shuah Khan 2016-02-01 16:18 ` Takashi Iwai 2016-02-01 16:18 ` Takashi Iwai 2016-02-01 17:04 ` Shuah Khan 2016-02-01 17:04 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 02/31] media: Add ALSA Media Controller function entities Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-28 15:02 ` Mauro Carvalho Chehab 2016-01-28 15:02 ` Mauro Carvalho Chehab 2016-01-06 20:26 ` [PATCH 03/31] media: Media Controller register/unregister entity_notify API Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-28 15:13 ` Mauro Carvalho Chehab 2016-01-28 15:13 ` Mauro Carvalho Chehab 2016-01-28 17:09 ` Shuah Khan 2016-01-28 17:09 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 04/31] media: Media Controller enable/disable source handler API Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-28 15:19 ` Mauro Carvalho Chehab [this message] 2016-01-28 15:19 ` Mauro Carvalho Chehab 2016-01-28 16:28 ` Shuah Khan 2016-01-28 16:28 ` Shuah Khan 2016-01-28 17:15 ` Mauro Carvalho Chehab 2016-01-28 17:15 ` Mauro Carvalho Chehab 2016-01-28 20:33 ` Shuah Khan 2016-01-28 20:33 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 05/31] media: Media Controller fix to not let stream_count go negative Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 06/31] media: Media Controller export non locking __media_entity_setup_link() Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 07/31] media: Media Controller non-locking __media_entity_pipeline_start/stop() Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 08/31] media: v4l-core add v4l_enable/disable_media_tuner() helper functions Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-28 15:26 ` Mauro Carvalho Chehab 2016-01-28 15:26 ` Mauro Carvalho Chehab 2016-01-28 17:12 ` Shuah Khan 2016-01-28 17:12 ` Shuah Khan 2016-01-06 20:26 ` [PATCH 09/31] media: v4l2-core add v4l_vb2q_enable_media_tuner() helper Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-28 15:29 ` Mauro Carvalho Chehab 2016-01-28 15:29 ` Mauro Carvalho Chehab 2016-01-28 17:31 ` Shuah Khan 2016-01-28 17:31 ` Shuah Khan 2016-01-28 17:34 ` Mauro Carvalho Chehab 2016-01-28 17:34 ` Mauro Carvalho Chehab 2016-01-06 20:26 ` [PATCH 10/31] media: Move au8522_media_pads enum to au8522.h from au8522_priv.h Shuah Khan 2016-01-06 20:26 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 11/31] media: au8522 change to create MC pad for ALSA Audio Out Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 12/31] media: au0828 Use au8522_media_pads enum for pad defines Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 13/31] media: au0828 fix au0828_create_media_graph() entity checks Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 15:37 ` Mauro Carvalho Chehab 2016-01-28 15:37 ` Mauro Carvalho Chehab 2016-01-28 18:57 ` Shuah Khan 2016-01-28 18:57 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 14/31] media: Change v4l-core to check for tuner availability Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 15/31] media: dvb-frontend invoke enable/disable_source handlers Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 15:53 ` Mauro Carvalho Chehab 2016-01-28 15:53 ` Mauro Carvalho Chehab 2016-01-28 16:07 ` One Thousand Gnomes 2016-01-28 16:07 ` One Thousand Gnomes 2016-01-28 16:59 ` Shuah Khan 2016-01-28 16:59 ` Shuah Khan 2016-01-28 17:31 ` Mauro Carvalho Chehab 2016-01-28 17:31 ` Mauro Carvalho Chehab 2016-01-06 20:27 ` [PATCH 16/31] media: au0828 video remove au0828_enable_analog_tuner() Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 17/31] media: au0828 video change to use v4l_enable_media_tuner() Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 15:57 ` Mauro Carvalho Chehab 2016-01-28 15:57 ` Mauro Carvalho Chehab 2016-01-28 19:21 ` Shuah Khan 2016-01-28 19:21 ` Shuah Khan 2016-01-28 19:33 ` Devin Heitmueller 2016-01-28 19:33 ` Devin Heitmueller 2016-01-06 20:27 ` [PATCH 18/31] media: au0828 change to use Managed Media Controller API Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 19/31] media: au0828 handle media_init and media_register window Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 20/31] media: au0828 change to register/unregister entity_notify hook Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 16:36 ` Mauro Carvalho Chehab 2016-01-28 16:36 ` Mauro Carvalho Chehab 2016-01-28 20:05 ` Shuah Khan 2016-01-28 20:05 ` Shuah Khan 2016-01-28 20:20 ` Mauro Carvalho Chehab 2016-01-28 20:20 ` Mauro Carvalho Chehab 2016-01-06 20:27 ` [PATCH 21/31] media: au0828 create tuner to decoder link in deactivated state Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 22/31] media: dvb-core create tuner to demod pad link in disabled state Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 16:38 ` Mauro Carvalho Chehab 2016-01-28 16:38 ` Mauro Carvalho Chehab 2016-01-28 20:09 ` Shuah Khan 2016-01-28 20:09 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 23/31] media: au0828 implement enable_source and disable_source handlers Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 16:43 ` Mauro Carvalho Chehab 2016-01-28 16:43 ` Mauro Carvalho Chehab 2016-01-28 20:14 ` Shuah Khan 2016-01-28 20:14 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 24/31] media: au0828 fix null pointer reference in au0828_create_media_graph() Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 16:44 ` Mauro Carvalho Chehab 2016-01-28 16:44 ` Mauro Carvalho Chehab 2016-01-28 20:15 ` Shuah Khan 2016-01-28 20:15 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 28/31] media: au0828 create link between ALSA Mixer and decoder Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 16:58 ` Mauro Carvalho Chehab 2016-01-28 16:58 ` Mauro Carvalho Chehab 2016-01-28 20:17 ` Shuah Khan 2016-01-28 20:17 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 29/31] media: track media device unregister in progress Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 17:01 ` Mauro Carvalho Chehab 2016-01-28 17:01 ` Mauro Carvalho Chehab 2016-01-28 17:04 ` Shuah Khan 2016-01-28 17:04 ` Shuah Khan 2016-01-28 17:28 ` Mauro Carvalho Chehab 2016-01-28 17:28 ` Mauro Carvalho Chehab 2016-01-28 20:42 ` Shuah Khan 2016-01-28 20:42 ` Shuah Khan 2016-02-03 19:32 ` Shuah Khan 2016-02-03 19:32 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 30/31] sound/usb: Check media device unregister progress state Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-06 20:27 ` [PATCH 31/31] media: au0828 change to check " Shuah Khan 2016-01-06 20:27 ` Shuah Khan 2016-01-28 17:05 ` Mauro Carvalho Chehab 2016-01-28 17:05 ` Mauro Carvalho Chehab 2016-01-28 20:31 ` Shuah Khan 2016-01-28 20:31 ` Shuah Khan 2016-01-06 21:01 ` [PATCH 25/31] media: au0828 fix to not call media_device_unregister_entity_notify() Shuah Khan 2016-01-06 21:01 ` Shuah Khan 2016-01-28 16:45 ` Mauro Carvalho Chehab 2016-01-28 16:45 ` Mauro Carvalho Chehab 2016-01-28 20:15 ` Shuah Khan 2016-01-28 20:15 ` Shuah Khan 2016-01-06 21:05 ` [PATCH 26/31] sound/usb: Update ALSA driver to use Managed Media Controller API Shuah Khan 2016-01-06 21:05 ` Shuah Khan 2016-01-07 15:44 ` Takashi Iwai 2016-01-07 15:44 ` Takashi Iwai 2016-01-07 20:27 ` Shuah Khan 2016-01-07 20:27 ` Shuah Khan 2016-01-06 21:05 ` [PATCH 27/31] sound/usb: Create media mixer function and control interface entities Shuah Khan 2016-01-06 21:05 ` Shuah Khan
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