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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 01:58:32 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 01:58:32 +0100 |
commit | ff58d005cd10fcd372787cceac547e11cf706ff6 (patch) | |
tree | 7e7af56aa1a38731af1ec5f3cf09f13050bb0ff4 /Documentation/media | |
parent | Merge tag 'pinctrl-v4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
parent | [media] mtk-vcodec: fix build warnings without DEBUG (diff) | |
download | linux-ff58d005cd10fcd372787cceac547e11cf706ff6.tar.xz linux-ff58d005cd10fcd372787cceac547e11cf706ff6.zip |
Merge tag 'media/v4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- new drivers:
- i.MX6 Video Data Order Adapter's (VDOA)
- Toshiba et8ek8 5MP sensor
- STM DELTA multi-format video decoder V4L2 driver
- SPI connected IR LED
- Mediatek IR remote receiver
- ZyDAS ZD1301 DVB USB interface driver
- new RC keymaps
- some very old LIRC drivers got removed from staging
- RC core gained support encoding IR scan codes
- DVB si2168 gained support for DVBv5 statistics
- lirc_sir driver ported to rc-core and promoted from staging
- other bug fixes, board additions and driver improvements
* tag 'media/v4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (230 commits)
[media] mtk-vcodec: fix build warnings without DEBUG
[media] zd1301: fix building interface driver without demodulator
[media] usbtv: add sharpness control
[media] cxusb: Use a dma capable buffer also for reading
[media] ttpci: address stringop overflow warning
[media] dvb-usb-v2: avoid use-after-free
[media] add Hama Hybrid DVB-T Stick support
[media] et8ek8: Fix compiler / Coccinelle warnings
[media] media: fix semicolon.cocci warnings
[media] media: exynos4-is: add flags to dummy Exynos IS i2c adapter
[media] v4l: of: check for unique lanes in data-lanes and clock-lanes
[media] coda/imx-vdoa: constify structs
[media] st-delta: debug: trace stream/frame information & summary
[media] st-delta: add mjpeg support
[media] st-delta: EOS (End Of Stream) support
[media] st-delta: rpmsg ipc support
[media] st-delta: add memory allocator helper functions
[media] st-delta: STiH4xx multi-format video decoder v4l2 driver
[media] MAINTAINERS: add st-delta driver
[media] ARM: multi_v7_defconfig: enable STMicroelectronics DELTA Support
...
Diffstat (limited to 'Documentation/media')
-rw-r--r-- | Documentation/media/kapi/mc-core.rst | 18 | ||||
-rw-r--r-- | Documentation/media/uapi/gen-errors.rst | 10 | ||||
-rw-r--r-- | Documentation/media/uapi/rc/rc-sysfs-nodes.rst | 13 |
3 files changed, 25 insertions, 16 deletions
diff --git a/Documentation/media/kapi/mc-core.rst b/Documentation/media/kapi/mc-core.rst index 1a738e5f6056..0c05503eaf1f 100644 --- a/Documentation/media/kapi/mc-core.rst +++ b/Documentation/media/kapi/mc-core.rst @@ -162,13 +162,13 @@ framework provides a depth-first graph traversal API for that purpose. currently defined as 16. Drivers initiate a graph traversal by calling -:c:func:`media_entity_graph_walk_start()` +:c:func:`media_graph_walk_start()` The graph structure, provided by the caller, is initialized to start graph traversal at the given entity. Drivers can then retrieve the next entity by calling -:c:func:`media_entity_graph_walk_next()` +:c:func:`media_graph_walk_next()` When the graph traversal is complete the function will return ``NULL``. @@ -206,7 +206,7 @@ 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 -:c:func:`media_entity_pipeline_start()`. +:c:func:`media_pipeline_start()`. The function will mark all entities connected to the given entity through enabled links, either directly or indirectly, as streaming. @@ -218,17 +218,17 @@ in higher-level pipeline structures and can then access the pipeline through the struct :c:type:`media_entity` pipe field. -Calls to :c:func:`media_entity_pipeline_start()` can be nested. +Calls to :c:func:`media_pipeline_start()` can be nested. The pipeline pointer must be identical for all nested calls to the function. -:c:func:`media_entity_pipeline_start()` may return an error. In that case, +:c:func:`media_pipeline_start()` may return an error. In that case, it will clean up any of the changes it did by itself. When stopping the stream, drivers must notify the entities with -:c:func:`media_entity_pipeline_stop()`. +:c:func:`media_pipeline_stop()`. -If multiple calls to :c:func:`media_entity_pipeline_start()` have been -made the same number of :c:func:`media_entity_pipeline_stop()` calls +If multiple calls to :c:func:`media_pipeline_start()` have been +made the same number of :c:func:`media_pipeline_stop()` calls are required to stop streaming. The :c:type:`media_entity`.\ ``pipe`` field is reset to ``NULL`` on the last nested stop call. @@ -245,7 +245,7 @@ operation must be done with the media_device graph_mutex held. Link validation ^^^^^^^^^^^^^^^ -Link validation is performed by :c:func:`media_entity_pipeline_start()` +Link validation is performed by :c:func:`media_pipeline_start()` for any entity which has sink pads in the pipeline. The :c:type:`media_entity`.\ ``link_validate()`` callback is used for that purpose. In ``link_validate()`` callback, entity driver should check diff --git a/Documentation/media/uapi/gen-errors.rst b/Documentation/media/uapi/gen-errors.rst index 6e983b9880fc..d39e34d1b19d 100644 --- a/Documentation/media/uapi/gen-errors.rst +++ b/Documentation/media/uapi/gen-errors.rst @@ -94,9 +94,17 @@ Generic Error Codes - Permission denied. Can be returned if the device needs write permission, or some special capabilities is needed (e. g. root) + - .. row 11 + + - ``EIO`` + + - I/O error. Typically used when there are problems communicating with + a hardware device. This could indicate broken or flaky hardware. + It's a 'Something is wrong, I give up!' type of error. + .. note:: - #. This list is not exaustive; ioctls may return other error codes. + #. This list is not exhaustive; ioctls may return other error codes. Since errors may have side effects such as a driver reset, applications should abort on unexpected errors, or otherwise assume that the device is in a bad state. diff --git a/Documentation/media/uapi/rc/rc-sysfs-nodes.rst b/Documentation/media/uapi/rc/rc-sysfs-nodes.rst index 6fb944fe21fd..3476ae29708f 100644 --- a/Documentation/media/uapi/rc/rc-sysfs-nodes.rst +++ b/Documentation/media/uapi/rc/rc-sysfs-nodes.rst @@ -92,15 +92,16 @@ This value may be reset to 0 if the current protocol is altered. Reading this file returns a list of available protocols to use for the wakeup filter, something like: -``rc5 rc6 nec jvc [sony]`` +``rc-5 nec nec-x rc-6-0 rc-6-6a-24 [rc-6-6a-32] rc-6-mce`` -The enabled wakeup protocol is shown in [] brackets. +Note that protocol variants are listed, so "nec", "sony", "rc-5", "rc-6" +have their different bit length encodings listed if available. -Writing "+proto" will add a protocol to the list of enabled wakeup -protocols. +Note that all protocol variants are listed. -Writing "-proto" will remove a protocol from the list of enabled wakeup -protocols. +The enabled wakeup protocol is shown in [] brackets. + +Only one protocol can be selected at a time. Writing "proto" will use "proto" for wakeup events. |