#
5eef2141 |
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16-Nov-2022 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: v4l2-dv-timings.c: fix too strict blanking sanity checks Sanity checks were added to verify the v4l2_bt_timings blanking fields in order to avoid integer overflows when userspace passes weird values. But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields. And that can fail with these checks. So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that. That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: 4b6d66a45ed3 ("media: v4l2-dv-timings: add sanity checks for blanking values") Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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#
4b6d66a4 |
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13-Oct-2022 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: v4l2-dv-timings: add sanity checks for blanking values Add sanity checks to v4l2_valid_dv_timings() to ensure that the provided blanking values are reasonable. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: b18787ed1ce3 ([media] v4l2-dv-timings: add new helper module) Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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#
4108b3e6 |
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23-Jul-2021 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: v4l2-dv-timings.c: fix wrong condition in two for-loops These for-loops should test against v4l2_dv_timings_presets[i].bt.width, not if i < v4l2_dv_timings_presets[i].bt.width. Luckily nothing ever broke, since the smallest width is still a lot higher than the total number of presets, but it is wrong. The last item in the presets array is all 0, so the for-loop must stop when it reaches that sentinel. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reported-by: Krzysztof HaĆasa <khalasa@piap.pl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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#
d9739338 |
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09-Oct-2019 |
zhong jiang <zhongjiang@huawei.com> |
media: v4l2-dv-timings: Use DIV_ROUND_CLOSEST directly to make it readable The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d but is perhaps more readable. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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#
1adbb827 |
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09-Sep-2019 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: v4l2-dv-timings.c: fix format string It should be "%u.%02u" instead of "%u.%u". Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reported-by: Bard Winther <bwinther@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
463659a0 |
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13-Sep-2018 |
Hans Verkuil <hansverk@cisco.com> |
media: hdmi.h: rename ADOBE_RGB to OPRGB and ADOBE_YCC to OPYCC These names have been renamed in the CTA-861 standard due to trademark issues. Replace them here as well so they are in sync with the standard. Signed-off-by: Hans Verkuil <hansverk@cisco.com> Cc: stable@vger.kernel.org Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
db034018 |
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14-Sep-2018 |
Hans Verkuil <hverkuil@xs4all.nl> |
media: replace ADOBERGB by OPRGB The CTA-861 standards have been updated to refer to opRGB instead of AdobeRGB. The official standard is in fact named opRGB, so switch to that. The two old defines referring to ADOBERGB in the public API are put under #ifndef __KERNEL__ and a comment mentions that they are deprecated. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: stable@vger.kernel.org Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
9cfd2753 |
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13-Sep-2018 |
Hans Verkuil <hans.verkuil@cisco.com> |
media: cec/v4l2: move V4L2 specific CEC functions to V4L2 Several CEC functions are actually specific for use with receivers, i.e. they should be part of the V4L2 subsystem, not CEC. These functions deal with validating and modifying EDIDs for (HDMI) receivers, and they do not actually have anything to do with the CEC subsystem and whether or not CEC is enabled. The problem was that if the CEC_CORE config option was not set, then these functions would become stubs, but that's not right: they should always be valid. So replace the cec_ prefix by v4l2_ and move them to v4l2-dv-timings.c. Update all drivers that call these accordingly. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Lars-Peter Clausen <lars@metafoo.de> Cc: <stable@vger.kernel.org> # for v4.17 and up Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
87f9ed85 |
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21-Mar-2017 |
Jose Abreu <Jose.Abreu@synopsys.com> |
media: v4l2-dv-timings: Introduce v4l2_calc_timeperframe helper A new helper function was introduced to facilitate the calculation of time per frame value whenever we have access to the full v4l2_dv_timings structure. This should be used only for receivers and only when there is enough accuracy in the measured pixel clock value as well as in the horizontal/vertical values. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
357a856a |
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14-Feb-2018 |
Hans Verkuil <hverkuil@xs4all.nl> |
media: v4l2-dv-timings: add v4l2_hdmi_colorimetry() Add the v4l2_hdmi_colorimetry() function so we have a single function that determines the colorspace, YCbCr encoding, quantization range and transfer function from the InfoFrame data. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
ddddfa78 |
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07-Feb-2018 |
Hans Verkuil <hansverk@cisco.com> |
media: add SPDX license info Replace the old license information with the corresponding SPDX license for the remaining media drivers that Cisco authored. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
4a3fad70 |
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04-Jan-2018 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: fix usage of whitespaces and on indentation On several places, whitespaces are being used for indentation, or even at the end of the line. Fix them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
d28b2cf9 |
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29-Nov-2017 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: v4l2-core: Fix kernel-doc markups There are some troubles on kernel-doc markups, as warned: drivers/media/v4l2-core/v4l2-dv-timings.c:259: warning: No description found for parameter 't1' drivers/media/v4l2-core/v4l2-dv-timings.c:259: warning: No description found for parameter 't2' drivers/media/v4l2-core/v4l2-dv-timings.c:259: warning: No description found for parameter 'pclock_delta' drivers/media/v4l2-core/v4l2-dv-timings.c:259: warning: No description found for parameter 'match_reduced_fps' drivers/media/v4l2-core/tuner-core.c:242: warning: bad line: internal parameters, like LNA mode drivers/media/v4l2-core/tuner-core.c:765: warning: No description found for parameter 'mode' drivers/media/v4l2-core/videobuf2-memops.c:127: warning: cannot understand function prototype: 'const struct vm_operations_struct vb2_common_vm_ops = ' drivers/media/v4l2-core/v4l2-mem2mem.c:190: warning: No description found for parameter 'm2m_dev' drivers/media/v4l2-core/v4l2-mem2mem.c:291: warning: No description found for parameter 'm2m_ctx' drivers/media/v4l2-core/videobuf-core.c:233: warning: No description found for parameter 'q' Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
65243076 |
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14-Jul-2016 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: add helpers for vic and pixelaspect ratio Add a helper to find timings based on the CEA-861 VIC code. Also, add a helper that returns the pixel aspect ratio based on the v4l2_dv_timings struct. [mchehab@s-opensource.com: fix coding style] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
7389e6ef |
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14-Sep-2016 |
Charles-Antoine Couret <charles-antoine.couret@nexvision.fr> |
[media] SDI: add flag for SDI formats and SMPTE 125M definition Adding others generic flags, which could be used by many components like GS1662. Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
8e20b803 |
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13-Jan-2016 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2-dv-timings: skip standards check for V4L2_DV_BT_CAP_CUSTOM Skip validating the standards field in v4l2_valid_dv_timings() if the V4L2_DV_BT_CAP_CUSTOM capability is set, since that implies that non-standard timings are allowed. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
85f9e06c |
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13-Nov-2015 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2-dv-timings: add new arg to v4l2_match_dv_timings Add the new match_reduced_fps argument to v4l2_match_dv_timings(). Depending on the situation you may or may not desire to match the reduced_fps flag. Typically only HDMI transmitters will need to check for this flag. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
8d7322f4 |
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22-Sep-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: add condition checks for reduced fps Added a helper function to check necessary conditions required for reduced fps. The reduced fps is supported for CVT and CEA861 timings. CVT supports reduced fps only if reduced blanking v2 (indicated by vsync = 8) is true. Whereas CEA861 supports reduced fps if V4L2_DV_FL_CAN_REDUCE_FPS flag is true. Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
74c9c0fe |
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12-Nov-2015 |
Mats Randgaard <matrandg@cisco.com> |
[media] v4l2-dv-timings: Compare horizontal blanking hsync and hbackporch must also be compared Signed-off-by: Mats Randgaard <matrandg@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
227da85e |
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12-Jun-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: print refresh rate with better precision In many cases, refresh rate is not exact integer. In such cases, fraction was lost and it used to print, say, 59 in case of 59.94. Now, capturing the fraction up to 2 decimal places. Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
1b3b3841 |
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12-Jun-2015 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2-dv-timings: log if the timing is reduced blanking V2 The last CVT standard introduced reduced blanking version 2 which is signaled by a vsync of 8. Log this. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
5fea1bb7 |
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10-Jun-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: add support for reduced blanking v2 Added support for reduced blanking version 2 (RB v2) in cvt timings. Standard specifies a fixed vsync pulse of 8 lines to indicate RB v2 timings. Vertical back porch is fixed at 6 lines and vertical front porch is remainder of vertical blanking time. For RB v2, horizontal blanking is fixed at 80 pixels. Horizontal sync is fixed at 32. All horizontal timing counts (active pixels, front, back porches) can be specified upto a precision of 1. RB v2 allows for non standard aspect ratios. In RB v2 vsync does not indicate aspect ratio. In absence of aspect ratio v4l2_detect_cvt() cannot calculate image width from image height. Hence extending the v4l2_detect_cvt() to pass image width in case of RB v2. Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
fd752429 |
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10-Jun-2015 |
Fabian Frederick <fabf@skynet.be> |
[media] v4l2-dv-timings: use swap() in v4l2_calc_aspect_ratio() Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
061ddda6 |
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21-May-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: add interlace support in detect cvt/gtf Extend detect_cvt/gtf API to indicate the format type (interlaced or progressive). In case of interlaced, the vertical front and back porch and vsync values for both (odd,even) fields are considered to derive image height. Populated vsync, vertical front, back porch values in bt timing structure for even and odd fields and updated the flags appropriately. Also modified the functions calling the detect_cvt/gtf(). As of now these functions are calling detect_cvt/gtf() with interlaced flag set to false. Cc: Martin Bugge <marbugge@cisco.com> Cc: Mats Randgaard <matrandg@cisco.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
8cf6874e |
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05-Jun-2015 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2-dv-timings: support interlaced in v4l2_print_dv_timings The v4l2_print_dv_timings() didn't log the interlaced format correctly. The timings for the bottom field weren't logged and the fields per second value was half of what it should have been. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
dc0cf4cf |
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05-Jun-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timing: avoid rounding twice in gtf hblank calc Currently, in gtf hblank calculations, the rounding is used twice, one at intermediate division and one at final state where hblank is rounded to nearest multiple of twice cell granularity. This error got introduced in 'commit d7ed5a3ddaec ("[media] v4l2-dv-timings: fix rounding in hblank and hsync calculation"), where it missed combining the rounding step. Correcting the same in this patch. Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
c9bc9f50 |
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05-May-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: fix overflow in gtf timings calculation The intermediate calculation in the expression for hblank can exceed 32 bit signed range. This overflow can lead to negative values for hblank. Typecasting intermediate variable to higher precision. Cc: Martin Bugge <marbugge@cisco.com> Signed-off-by: Prashant Laddha <prladdha@cisco.com> [hans.verkuil@cisco.com: made the denominator u32, since that's what div_u64 expects] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
9c3f2052 |
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22-Apr-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: replace hsync magic number with a macro This change will not change timing calculation. In CVT generator spreadsheet the nominal value of hsync (as a percentage of line) is 8 percent. Cc: Martin Bugge <marbugge@cisco.com> Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
947ed99e |
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22-Apr-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: add sanity checks in cvt,gtf calculations Wrong values of hfreq and image height can lead to strange timings. Avoid timing calculations for such values. Suggested By: Martin Bugge <marbugge@cisco.com> Cc: Martin Bugge <marbugge@cisco.com> Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
d7ed5a3d |
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22-Apr-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: fix rounding in hblank and hsync calculation Changed the rounding calculation for hblank and hsync to match it to equations in cvt and gtf standards. In cvt calculation, hsync needs to be rounded down. In gtf calculations, hblank needs to be rounded to nearest multiple of twice the cell granularity and hsync needs to be rounded to the nearest multiple of cell granularity. Cc: Martin Bugge <marbugge@cisco.com> Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
f6747658 |
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22-Apr-2015 |
Prashant Laddha <prladdha@cisco.com> |
[media] v4l2-dv-timings: fix rounding error in vsync_bp calculation Changed the rounding offsets used in vsync_bp calculation in cvt and gtf timings. The results for vsync_bp should now match with results from timing generator spreadsheets for cvt and gtf standards. In the vsync_bp calculation for cvt, always round down the value of (CVT_MIN_VSYNC_BP / h_period_est) and then add 1. It thus, reflects the equation used in timing generator spreadsheet. Using 1999999 as rounding offset, could pontentially lead to bumping up the vsync_bp value by extra 1. In the vsync_bp calculations for gtf, instead of round up or round down, round the (CVT_MIN_VSYNC_BP / h_period_est) to the nearest integer. Thanks to Martin Bugge <marbugge@cisco.com> for validating with standards and suggestions on equations. Cc: Martin Bugge <marbugge@cisco.com> Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
74d802d8 |
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03-Apr-2015 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: log new V4L2_DV_FL_IS_CE_VIDEO flag Add support for the new flag to v4l2_print_dv_timings(). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
c166845c |
|
20-Sep-2014 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: only check standards if non-zero If one or both of the timings being compared have the standards field with value 0, then accept that. Only check for matching standards if both timings have actually filled in that field. Otherwise no match will ever be found since when timings are detected the standards field will typically be set to 0 by the driver. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
f71920ef |
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14-Jun-2014 |
Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> |
[media] media: v4l2-core: v4l2-dv-timings.c: Cleaning up code wrong value used in aspect ratio Wrong value used in same cases for the aspect ratio. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Cc: stable@vger.kernel.org # for v3.12 and up Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
bc96f30c |
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08-Apr-2014 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings.c: add the new 4K timings to the list Add the new CEA-861-F and DMT 4K timings to the list of predefined timings. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
c4885ada |
|
04-Mar-2014 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: add module name, description, license I completely forgot to add them when I made this module. Loading this module without it will taint the kernel, which is not intended. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: stable@vger.kernel.org # for v3.12 and up Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
3be55e04 |
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31-Jan-2014 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: mention missing 'reduced blanking V2' The VESA standard added a version 2 of the reduced blanking formula. Note in the comment that this is not yet supported by the v4l2_detect_cvt function. Obviously this should be implemented eventually, but for now add this as a reminder. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
257cc4b5 |
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23-Jan-2014 |
Martin Bugge <marbugge@cisco.com> |
[media] v4l2-dv-timings: fix GTF calculation Round off image width to nearest 8 (GTF_CELL_GRAN) A source sending a GTF (Generalized Timing Formula) format have no means of signalling image width. The assumed aspect ratio may result in an odd image width but according to the standard image width should be in multiple of 8. Cc: Mats Randgaard <matrandg@cisco.com> Signed-off-by: Martin Bugge <marbugge@cisco.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
b8f0fff4 |
|
19-Aug-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: add callback to handle exceptions In most cases the v4l2_bt_timings_cap struct has all the information necessary to determine valid timings, but occasionally there are exceptions. Add a callback function to be able to test for those exceptions. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
70b65494 |
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19-Aug-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: rename v4l2_dv_valid_timings to v4l2_valid_dv_timings All other functions follow the v4l2_<foo>_dv_timings pattern, do the same for this function. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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d1c65ad6 |
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19-Aug-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: export the timings list Some drivers need to be able to access the full list of timings. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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074ca43f |
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19-Aug-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: fill in type field The detect_cvt/gtf functions didn't fill in the type field. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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ef1ed8f5 |
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15-Aug-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: rename v4l_match_dv_timings to v4l2_match_dv_timings It's the only function in v4l2-dv-timings.c with the v4l prefix instead of v4l2. Make it consistent with the other functions. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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0216dc2f |
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15-Aug-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: add v4l2_print_dv_timings helper Drivers often have to log the contents of a dv_timings struct. Adding this helper will make it easier for drivers to do so. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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c3e75c7d |
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14-Aug-2013 |
Martin Bugge <marbugge@cisco.com> |
[media] v4l2-dv-timings: fix CVT calculation This patch fixes two errors that caused incorrect format detections: The first bug is in the calculation of the vertical backporch: the combined period of vsync and backporch must *exceed* a certain minimum value, and not be equal to it. The second bug is a rounding error in the reduced blanking calculation: expand the ideal_duty_cylce to be in parts per ten thousand to avoid rounding errors. Signed-off-by: Martin Bugge <marbugge@cisco.com> Cc: Mats Randgaard <matrandg@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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25764158 |
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29-Jul-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2: move dv-timings related code to v4l2-dv-timings.c v4l2-common.c contained a bunch of dv-timings related functions. Move that to the new v4l2-dv-timings.c which is a more appropriate place for them. There aren't many drivers that do HDTV, so it is a good idea to separate common code related to that into a module of its own. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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b18787ed |
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29-Jul-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dv-timings: add new helper module This module makes it easy to filter valid timings from the full list of CEA and DMT timings based on the timings capabilities. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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