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2013-06-08[media] DocBook/media/v4l: update version numberHans Verkuil
The version number was still 3.9: update to 3.10. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-05-21[media] DocBook: media: update codec section, drop obsolete 'suspended' stateHans Verkuil
The Codec section in the V4L2 specification was marked as 'suspended', even though codec support has been around for quite some time. Update this section, explaining a bit about memory-to-memory devices and pointing to the MPEG controls section. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-14[media] v4l2: rename VIDIOC_DBG_G_CHIP_NAME to _CHIP_INFOHans Verkuil
This ioctl will be extended to return more information than just the name. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-14[media] v4l2: drop V4L2_CHIP_MATCH_SUBDEV_NAMEHans Verkuil
After using the new VIDIOC_DBG_G_CHIP_NAME ioctl I realized that the matching by name possibility is useless. Just drop it and rename MATCH_SUBDEV_IDX to just MATCH_SUBDEV. The v4l2-dbg utility is much better placed to match by name by just enumerating all bridge and subdev devices until chip_name.name matches. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-14[media] v4l2: put VIDIOC_DBG_G_CHIP_NAME under ADV_DEBUGHans Verkuil
Only enable this ioctl if the VIDEO_ADV_DEBUG config option is set. This prevents abuse from both userspace and kernelspace (some bridge drivers abuse DBG_G_CHIP_IDENT, lets prevent that from happening again with this ioctl). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-04[media] soc_camera: Add RGB666 & RGB888 formatsPhil Edworthy
Based on work done by Katsuya Matsubara. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-31[media] V4L: Add MATRIX option to V4L2_CID_EXPOSURE_METERING controlSylwester Nawrocki
This patch adds a menu option to the V4L2_CID_EXPOSURE_METERING control for multi-zone metering. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-29[media] v4l2: Add documentation for the FM RX controlsAndrey Smirnov
Add appropriate documentation for all the newly added standard controls. Based on the patch by Manjunatha Halli [1] [1] http://lists-archives.com/linux-kernel/27641303-media-update-docs-for-v4l2-fm-new-features.html Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-29[media] v4l2: Fix the type of V4L2_CID_TUNE_PREEMPHASIS in the documentationAndrey Smirnov
Change the type of V4L2_CID_TUNE_PREEMPHASIS from 'integer' to 'enum v4l2_preemphasis' Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-25[media] DocBook media: document 3.10 changesHans Verkuil
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-25[media] DocBook media: add VIDIOC_DBG_G_CHIP_NAME documentationHans Verkuil
And update the other debug ioctls accordingly. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-25[media] DocBook media: fix syntax problems in dvbproperty.xmlHans Verkuil
Caught by xmllint. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] DocBook/media/v4l: Update version number and document 3.10 changesHans Verkuil
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] DocBook/media/v4l: remove the documentation of the obsolete ↵Hans Verkuil
dv_preset API This API is no longer used by any driver and so can be removed from the documentation. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] v4l2-ctrls: add V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER controlHans Verkuil
Control whether video sequence headers should be repeated. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] documentation: DocBook/media : Fix typo in dvbproperty.xmlMasanari Iida
Correct spelling typos. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-21[media] media: add support for decoder as one of media entity typesManjunath Hadli
A lot of SOCs including Texas Instruments Davinci family mainly use video decoders as input devices. This patch adds a flag 'MEDIA_ENT_T_V4L2_SUBDEV_DECODER' media entity type for decoder's. Along side updates the documentation for this media entity type. Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-05[media] v4l: Define video buffer flag for the COPY timestamp typeKamil Debski
Define video buffer flag for the COPY timestamp. In this case the timestamp value is copied from the OUTPUT to the corresponding CAPTURE buffer. Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-06[media] DocBook: mention that EINVAL can be returned for invalid menu indicesHans Verkuil
The documentation suggested that if the control value is wrong only ERANGE can be returned. But in some cases (an invalid menu index) EINVAL can also be returned. Clarify this. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-06[media] DocBook: improve the error_idx field documentationHans Verkuil
The documentation of the error_idx field was incomplete and confusing. This patch improves it. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-06[media] DocBook: fix various validation errorsHans Verkuil
Fixed the following errors (with exception of the SVG errors): GEN /home/hans/work/src/v4l/media-git/Documentation/DocBook//v4l2.xml rm -rf Documentation/DocBook/index.html; echo '<h1>Linux Kernel HTML Documentation</h1>' >> Documentation/DocBook/index.html && echo '<h2>Kernel Version: 3.8.0-rc1</h2>' >> Documentation/DocBook/index.html && cat Documentation/DocBook/media_api.html >> Documentation/DocBook/index.html /tmp/x.xml:883: element revremark: validity error : Element structname is not declared in revremark list of possible children /tmp/x.xml:883: element revremark: validity error : Element xref is not declared in revremark list of possible children /tmp/x.xml:9580: element xref: validity error : Element xref was declared EMPTY this one has content /tmp/x.xml:13508: element link: validity error : Element link does not carry attribute linkend /tmp/x.xml:13508: element link: validity error : No declaration for attribute linked of element link /tmp/x.xml:16986: element imagedata: validity error : Value "SVG" for attribute format of imagedata is not among the enumerated set /tmp/x.xml:17003: element imagedata: validity error : Value "SVG" for attribute format of imagedata is not among the enumerated set /tmp/x.xml:17022: element imagedata: validity error : Value "SVG" for attribute format of imagedata is not among the enumerated set Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-05[media] DocBook: media: struct v4l2_capability card field is a UTF-8 stringLaurent Pinchart
The struct v4l2_capability card field stores the device name. That name can be hardcoded in drivers, or be retrieved directly from the device. The later is very common with USB devices. As several devices already report names that include non-ASCII characters, update the field description to use UTF-8. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-05[media] v4l2-ctrl: Add helper function for the controls range updateSylwester Nawrocki
This patch adds a helper function that allows to modify range, i.e. minimum, maximum, step and default value of a v4l2 control, after the control has been created and initialized. This is helpful in situations when range of a control depends on user configurable parameters, e.g. camera sensor absolute exposure time depending on an output image resolution and frame rate. v4l2_ctrl_modify_range() function allows to modify range of an INTEGER, BOOL, MENU, INTEGER_MENU and BITMASK type controls. Based on a patch from Hans Verkuil http://patchwork.linuxtv.org/patch/8654. Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-24Merge branch 'v4l_for_linus' into staging/for_v3.9Mauro Carvalho Chehab
* v4l_for_linus: (464 commits) [media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures [media] uvcvideo: Cleanup leftovers of partial revert [media] uvcvideo: Return -EACCES when trying to set a read-only control Linux 3.8-rc3 mm: reinstante dropped pmd_trans_splitting() check cred: Remove tgcred pointer from struct cred drm/ttm: fix fence locking in ttm_buffer_object_transfer ARM: clps711x: Fix bad merge of clockevents setup ARM: highbank: save and restore L2 cache and GIC on suspend ARM: highbank: add a power request clear ARM: highbank: fix secondary boot and hotplug ARM: highbank: fix typos with hignbank in power request functions ARM: dts: fix highbank cpu mpidr values ARM: dts: add device_type prop to cpu nodes on Calxeda platforms drm/prime: drop reference on imported dma-buf come from gem xen/netfront: improve truesize tracking ARM: mx5: Fix MX53 flexcan2 clock ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array sctp: fix Kconfig bug in default cookie hmac selection EDAC: Cleanup device deregistering path ... Conflicts: drivers/media/pci/dm1105/dm1105.c drivers/media/platform/soc_camera/mx2_camera.c
2013-01-23[media] dvb: Add DVBv5 statistics propertiesMauro Carvalho Chehab
The DVBv3 statistics parameters are limited on several ways: - It doesn't provide any way to indicate the used measure, so userspace need to guess how to calculate/use it; - Only a limited set of stats are supported; - Can't be called in a way to require them to be filled all at once (atomic reads from the hardware), with may cause troubles on interpreting them on userspace; - On some OFDM delivery systems, the carriers can be independently modulated, having different properties. Currently, there's no way to report per-layer stats. To address the above issues, adding a new DVBv5-based stats API. While here, correct inner code nomenclature on a few places. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-06[media] V4L: Remove deprecated image centering controlsSylwester Nawrocki
It has been over 3 years since the V4L2_CID_[HV]CENTER were deprecated. Clean up the DocBook and remove the V4L2_CID_VCENTER_DEPRECATED, V4L2_CID_VCENTER_DEPRECATED control related paragraphs. Remove the V4L2_CID_[HV]CENTER controls definitions from v4l2-controls.h, these controls are not used by any driver in the mainline now. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-03Documentation: remove __dev* attributes.Greg Kroah-Hartman
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from the kernel documentation. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-21[media] V4L: DocBook: Add V4L2_MBUS_FMT_YUV10_1X30 media bus pixel codeSylwester Nawrocki
This patch adds definition of media bus code for YUV pixel format transferred in 30-bit samples where each component has 10 bits width. [mchehab@redhat.com: fix a merge conflict at v4l2-mediabus.h] Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21[media] v4l: There's no __unsignedSakari Ailus
Correct a typo. v4l2_plane.m.userptr is unsigned long, not __unsigned long. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21[media] v4l: Define video buffer flags for timestamp typesSakari Ailus
Define video buffer flags for different timestamp types. Everything up to now have used either realtime clock or monotonic clock, without a way to tell which clock the timestamp was taken from. Also document that the clock source of the timestamp in the timestamp field depends on buffer flags. [mchehab@redhat.com: fix a few wrong references to Kernel 3.8 - as this patch is meant for 3.9] Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-19[media] v4l2: add new pixel formats supported on dm365Manjunath Hadli
add new macro V4L2_PIX_FMT_SGRBG10ALAW8 and associated formats to represent Bayer format frames compressed by A-LAW algorithm, add V4L2_PIX_FMT_UV8 to represent storage of CbCr data (UV interleaved) only. Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-19[media] DocBook: fix an index referenceMauro Carvalho Chehab
Error: no ID for constraint linkend: V4L2-PIX-FMT-NV12MT-16X16. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-19[media] media: add new mediabus format enums for dm365Manjunath Hadli
add new enum entries for supporting the media-bus formats on dm365. These include some bayer and some non-bayer formats. V4L2_MBUS_FMT_YDYUYDYV8_1X16 and V4L2_MBUS_FMT_UV8_1X8 are used internal to the hardware by the resizer. V4L2_MBUS_FMT_SBGGR10_ALAW8_1X8 represents the bayer ALAW format that is supported by dm365 hardware. Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-11-25[media] Documentation: media: description of DMABUF exporting in V4L2Tomasz Stanislawski
This patch adds description and usage examples for exporting DMABUF file descriptor in V4L2. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-11-25[media] Documentation: media: description of DMABUF importing in V4L2Tomasz Stanislawski
This patch adds description and usage examples for importing DMABUF file descriptor in V4L2. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-28[media] v4l: Correct definition of v4l2_buffer.flags related to cache managementSakari Ailus
V4L2_BUF_FLAG_NO_CACHE_INVALIDATE and V4L2_BUF_FLAG_NO_CACHE_CLEAN were define incorrectly in the documentation. Fix this by changing the documentation to match reality. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-17DocBook/media/Makefile: Fix build due to uapi breakageMauro Carvalho Chehab
The uapi changeset forgot to fix the header locations, needed for the DocBook specs. Fix it. Cc: David Howells <dhowells@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] v4l: Add control definitions for new H264 encoder featuresArun Kumar K
New controls are added for supporting H264 encoding features like: - MVC frame packing, - flexible macroblock ordering, - arbitrary slice ordering, - hierarchical coding. Signed-off-by: Jeongtae Park <jtp.park@samsung.com> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Acked-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] v4l: Add fourcc definitions for new formatsArun Kumar K
Add the following new fourcc definitions, for multiplanar YCbCr: V4L2_PIX_FMT_NV21M, V4L2_PIX_FMT_NV12MT_16X16 and compressed formats: V4L2_PIX_FMT_H264_MVC, V4L2_PIX_FMT_VP8. Signed-off-by: Jeongtae Park <jtp.park@samsung.com> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Acked-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] DocBook: various updates w.r.t. v4l2_buffer and multiplanarHans Verkuil
Clarify the behavior of v4l2_buffer in the multiplanar case, including fixing a false statement: you can't set m.planes to NULL when calling DQBUF. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] media: v4l2-ctrls: add control for test patternLad, Prabhakar
add V4L2_CID_TEST_PATTERN of type menu, which determines the internal test pattern selected by the device. Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] V4L: Add V4L2_PIX_FMT_S5C_UYVY_JPG fourcc definitionSylwester Nawrocki
This patch adds definition of the Samsung S5C73M3 camera specific image format. V4L2_PIX_FMT_S5C_UYVY_JPG is a two-planar format, the first plane contains interleaved UYVY and JPEG data followed by meta-data. The second plane contains additional meta-data needed for extracting JPEG and UYVY data stream from the first plane. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] V4L: Add V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8 media bus formatSylwester Nawrocki
This patch adds media bus pixel code for the interleaved JPEG/UYVY image format used by S5C73MX Samsung cameras. This interleaved image data is transferred on MIPI-CSI2 bus as User Defined Byte-based Data. It also defines an experimental vendor and device specific media bus formats section and adds related DocBook documentation. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-27[media] DVB API: LNA documentationAntti Palosaari
Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] DocBook: in non-blocking mode return EAGAIN in hwseekHans Verkuil
VIDIOC_S_HW_FREQ_SEEK should return EAGAIN when called in non-blocking mode. This might change in the future if we add support for this in the future, but right now this is not supported. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] DocBook: EAGAIN == EWOULDBLOCKHans Verkuil
Merge the two entries since they are one and the same error. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] Docbook: add missing vidioc-subdev-g-edid.xmlHans Verkuil
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] DocBook: Mark CROPCAP as optional instead of as compulsoryHans Verkuil
While the documentation says that VIDIOC_CROPCAP is compulsory for all video capture and output devices, in practice VIDIOC_CROPCAP is only implemented for devices that can do cropping and/or scaling. Update the documentation to no longer require VIDIOC_CROPCAP if the driver does not support cropping or scaling or non-square pixels. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] DocBook: clarify that sequence is also set for output devicesHans Verkuil
It was not entirely obvious that the sequence count should also be set for output devices. Also made it more explicit that this sequence counter counts frames, not fields. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] DocBook: fix awkward language and fix the documented return valueHans Verkuil
The Video Standard section contains some awkward language. It also wasn't updated when the error code for unimplemented ioctls changed from EINVAL to ENOTTY. [mchehab@redhat.com: remove a misplaced footnote tag] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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