Fix the paragraph identation for the media controller headers. Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> --- Documentation/media/media_drivers.rst | 41 ++++++++++++++++++++--------------- 1 file changed, 24 insertions(+), 17 deletions(-) diff --git a/Documentation/media/media_drivers.rst b/Documentation/media/media_drivers.rst index 722170cb7f40..507a40f69d05 100644 --- a/Documentation/media/media_drivers.rst +++ b/Documentation/media/media_drivers.rst @@ -183,7 +183,8 @@ The media controller userspace API is documented in DocBook format in Documentation/DocBook/media/v4l/media-controller.xml. This document focus on the kernel-side implementation of the media framework. -* Abstract media device model: +Abstract media device model +^^^^^^^^^^^^^^^^^^^^^^^^^^^ Discovering a device internal topology, and configuring it at runtime, is one of the goals of the media framework. To achieve this, hardware devices are @@ -205,8 +206,8 @@ A link is a point-to-point oriented connection between two pads, either on the same entity or on different entities. Data flows from a source pad to a sink pad. - -* Media device: +Media device +^^^^^^^^^^^^ A media device is represented by a struct &media_device instance, defined in include/media/media-device.h. Allocation of the structure is handled by the @@ -218,9 +219,8 @@ __media_device_register() via the macro media_device_register() and unregistered by calling media_device_unregister(). -* Entities, pads and links: - -- Entities +Entities +^^^^^^^^ Entities are represented by a struct &media_entity instance, defined in include/media/media-entity.h. The structure is usually embedded into a @@ -235,7 +235,8 @@ media_device_register_entity() and unregistred by calling media_device_unregister_entity(). -- Interfaces +Interfaces +^^^^^^^^^^ Interfaces are represented by a struct &media_interface instance, defined in include/media/media-entity.h. Currently, only one type of interface is @@ -247,8 +248,8 @@ media_devnode_create() and remove them by calling: media_devnode_remove(). -- Pads - +Pads +^^^^ Pads are represented by a struct &media_pad instance, defined in include/media/media-entity.h. Each entity stores its pads in a pads array managed by the entity driver. Drivers usually embed the array in a @@ -267,7 +268,8 @@ Pads have flags that describe the pad capabilities and state. NOTE: One and only one of %MEDIA_PAD_FL_SINK and %MEDIA_PAD_FL_SOURCE must be set for each pad. -- Links +Links +^^^^^ Links are represented by a struct &media_link instance, defined in include/media/media-entity.h. There are two types of links: @@ -289,15 +291,16 @@ Associate one interface to a Link. Drivers create interface to entity links by calling: media_create_intf_link() and remove with media_remove_intf_links(). -NOTE: +.. note:: -Links can only be created after having both ends already created. + Links can only be created after having both ends already created. Links have flags that describe the link capabilities and state. The valid values are described at media_create_pad_link() and media_create_intf_link(). -Graph traversal: +Graph traversal +^^^^^^^^^^^^^^^ The media framework provides APIs to iterate over entities in a graph. @@ -339,7 +342,8 @@ Helper functions can be used to find a link between two given pads, or a pad connected to another pad through an enabled link media_entity_find_link() and media_entity_remote_pad() -Use count and power handling: +Use count and power handling +^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Due to the wide differences between drivers regarding power management needs, the media controller does not implement power management. However, @@ -351,12 +355,14 @@ The &media_entity.@use_count field is owned by media drivers and must not be touched by entity drivers. Access to the field must be protected by the &media_device.@graph_mutex lock. -Links setup: +Links setup +^^^^^^^^^^^ Link properties can be modified at runtime by calling media_entity_setup_link() -Pipelines and media streams: +Pipelines and media streams +^^^^^^^^^^^^^^^^^^^^^^^^^^^ When starting streaming, drivers must notify all entities in the pipeline to prevent link states from being modified during streaming by calling @@ -392,7 +398,8 @@ changing entities configuration parameters) drivers can explicitly check the media_entity stream_count field to find out if an entity is streaming. This operation must be done with the media_device graph_mutex held. -Link validation: +Link validation +^^^^^^^^^^^^^^^ Link validation is performed by media_entity_pipeline_start() for any entity which has sink pads in the pipeline. The -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
