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authorJens Axboe <axboe@kernel.dk>2018-02-07 15:54:20 -0700
committerJens Axboe <axboe@kernel.dk>2018-02-07 15:54:20 -0700
commit61a695184fcc8f225327206b88320279dd8684af (patch)
tree6cbda2b0e7de94ebad95072d17cc0aa82c9d8ab3 /Documentation/media/kapi/v4l2-dev.rst
parent9e05c864993c5442227f83ae1694a737d7a102ed (diff)
parent581e400ff935d34d95811258586128bf11baef15 (diff)
Merge branch 'master' into test
* master: (1190 commits) ASoC: stm32: add of dependency for stm32 drivers ASoC: mt8173-rt5650: fix child-node lookup ASoC: dapm: fix debugfs read using path->connected platform/x86: samsung-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro platform/x86: ideapad-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro platform/x86: dell-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro seq_file: Introduce DEFINE_SHOW_ATTRIBUTE() helper macro Documentation/sysctl/user.txt: fix typo MAINTAINERS: update ARM/QUALCOMM SUPPORT patterns MAINTAINERS: update various PALM patterns MAINTAINERS: update "ARM/OXNAS platform support" patterns MAINTAINERS: update Cortina/Gemini patterns MAINTAINERS: remove ARM/CLKDEV SUPPORT file pattern MAINTAINERS: remove ANDROID ION pattern mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors mm: docs: fix parameter names mismatch mm: docs: fixup punctuation pipe: read buffer limits atomically pipe: simplify round_pipe_size() pipe: reject F_SETPIPE_SZ with size over UINT_MAX ...
Diffstat (limited to 'Documentation/media/kapi/v4l2-dev.rst')
-rw-r--r--Documentation/media/kapi/v4l2-dev.rst17
1 files changed, 12 insertions, 5 deletions
diff --git a/Documentation/media/kapi/v4l2-dev.rst b/Documentation/media/kapi/v4l2-dev.rst
index b29aa616c267..7bb0505b60f1 100644
--- a/Documentation/media/kapi/v4l2-dev.rst
+++ b/Documentation/media/kapi/v4l2-dev.rst
@@ -196,11 +196,18 @@ device.
Which device is registered depends on the type argument. The following
types exist:
-- ``VFL_TYPE_GRABBER``: ``/dev/videoX`` for video input/output devices
-- ``VFL_TYPE_VBI``: ``/dev/vbiX`` for vertical blank data (i.e. closed captions, teletext)
-- ``VFL_TYPE_RADIO``: ``/dev/radioX`` for radio tuners
-- ``VFL_TYPE_SDR``: ``/dev/swradioX`` for Software Defined Radio tuners
-- ``VFL_TYPE_TOUCH``: ``/dev/v4l-touchX`` for touch sensors
+========================== ==================== ==============================
+:c:type:`vfl_devnode_type` Device name Usage
+========================== ==================== ==============================
+``VFL_TYPE_GRABBER`` ``/dev/videoX`` for video input/output devices
+``VFL_TYPE_VBI`` ``/dev/vbiX`` for vertical blank data (i.e.
+ closed captions, teletext)
+``VFL_TYPE_RADIO`` ``/dev/radioX`` for radio tuners
+``VFL_TYPE_SUBDEV`` ``/dev/v4l-subdevX`` for V4L2 subdevices
+``VFL_TYPE_SDR`` ``/dev/swradioX`` for Software Defined Radio
+ (SDR) tuners
+``VFL_TYPE_TOUCH`` ``/dev/v4l-touchX`` for touch sensors
+========================== ==================== ==============================
The last argument gives you a certain amount of control over the device
device node number used (i.e. the X in ``videoX``). Normally you will pass -1