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* [media] v4l: Define a pixel format for the R-Car VSP1 2-D histogram engineNiklas Söderlund2017-04-141-0/+1
| | | | | | | | | | The format is used on the R-Car VSP1 video queues that carry 2-D histogram statistics data. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: vsp1: Add HGO supportLaurent Pinchart2017-04-1410-13/+367
| | | | | | | | | The HGO is a Histogram Generator One-Dimension. It computes per-channel histograms over a configurable region of the image with optional subsampling. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: Define a pixel format for the R-Car VSP1 1-D histogram engineLaurent Pinchart2017-04-141-0/+1
| | | | | | | | | The format is used on the R-Car VSP1 video queues that carry 1-D histogram statistics data. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: vsp1: Fix HGO and HGT routing register addressesLaurent Pinchart2017-04-141-2/+2
| | | | | | | The addresses are incorrect, fix them. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: vsp1: Support histogram generators in pipeline configurationLaurent Pinchart2017-04-146-28/+134
| | | | | | | | | | | Histogram generators are single-pad entities that branch as leaf nodes at any point in the pipeline. Make sure that pipeline traversal and routing configuration support them correctly. Support for the actual HGO and HGT operation will come later. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: vsp1: Add histogram supportLaurent Pinchart2017-04-144-0/+732
| | | | | | | | The histogram common code will be used to implement support for both the HGO and HGT histogram computation engines. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: Add metadata buffer type and formatLaurent Pinchart2017-04-144-6/+66
| | | | | | | | | | | | | | | The metadata buffer type is used to transfer metadata between userspace and kernelspace through a V4L2 buffers queue. It comes with a new metadata capture capability and format description. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> [hans.verkuil@cisco.com: removed left-over 'experimental' note] [hans.verkuil@cisco.com: add newline after _v4l2-meta-format label] Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: vsp1: wpf: Implement rotation supportLaurent Pinchart2017-04-145-54/+177
| | | | | | | | | Some WPF instances, on Gen3 devices, can perform 90° rotation when writing frames to memory. Implement support for this using the V4L2_CID_ROTATE control. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov2640: avoid calling ov2640_select_win() twiceHans Verkuil2017-04-141-11/+7
| | | | | | | | Simplify ov2640_set_params and ov2640_set_fmt. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov9740: avoid calling ov9740_res_roundup() twiceHans Verkuil2017-04-141-17/+1
| | | | | | | | Simplify ov9740_s_fmt. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov9640: avoid calling ov9640_res_roundup() twiceHans Verkuil2017-04-141-21/+3
| | | | | | | | Simplify ov9640_s_fmt and ov9640_set_fmt Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov772x: avoid calling ov772x_select_params() twiceHans Verkuil2017-04-141-28/+13
| | | | | | | | Merge ov772x_s_fmt into ov772x_set_fmt. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov5642: avoid calling ov5642_find_datafmt() twiceHans Verkuil2017-04-141-1/+1
| | | | | | | | Simplify ov5642_set_fmt(). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] mt9v022: avoid calling mt9v022_find_datafmt() twiceHans Verkuil2017-04-141-4/+4
| | | | | | | | Simplify mt9v022_s_fmt and mt9v022_set_fmt. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] mt9m001: avoid calling mt9m001_find_datafmt() twiceHans Verkuil2017-04-141-4/+4
| | | | | | | | Simplify mt9m001_s_fmt and mt9m001_set_fmt. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] imx074: avoid calling imx074_find_datafmt() twiceHans Verkuil2017-04-141-1/+1
| | | | | | | | Simplify imx074_set_fmt(). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] si2157: Add support for Si2141-A10Stefan Brüns2017-04-142-2/+23
| | | | | | | | | | | The Si2141 needs two distinct commands for powerup/reset, otherwise it will not respond to chip revision requests. It also needs a firmware to run properly. Cc: Evgeny Plehov <EvgenyPlehov@ukr.net> Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] si2157: revert si2157: Si2141/2151 tuner supportAntti Palosaari2017-04-142-66/+6
| | | | | | | | | | | | | 'Reset' loop does not look correct. I tested it very many times and it never repeated those commands. If problem, it tries to solve, really occurs on some situations better solution should be find out. There is another patch which does not have such hackish looking loop. Lets change to it. Cc: Evgeny Plehov <EvgenyPlehov@ukr.net> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l2-tpg: don't clamp XV601/709 to lim rangeHans Verkuil2017-04-101-1/+8
| | | | | | | | | | The XV601/709 encodings are special: they signal limited range, but use the full range to encode a larger gamut with R', G' and B' values outside the [0-1] range. So don't clamp to limited range for these two encodings. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] imon: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] wl128x: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] c8sectpfe: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] fsl-viu: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] av7110: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] netup_unidvb: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ivtv: use setup_timerGeliang Tang2017-04-101-3/+2
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] cx18: use setup_timerGeliang Tang2017-04-101-3/+1
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] bt8xx: use setup_timerGeliang Tang2017-04-101-3/+1
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] saa7146: use setup_timerGeliang Tang2017-04-102-6/+4
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] saa7134: use setup_timerGeliang Tang2017-04-103-9/+6
| | | | | | | | Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] m2m-deinterlace: don't return zero on failure paths in ↵Alexey Khoroshilov2017-04-101-0/+1
| | | | | | | | | | | | | deinterlace_probe() If DMA does not support INTERLEAVE, deinterlace_probe() breaks off initialization, releases dma channel, but returns zero. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] coda: do not enumerate YUYV if VDOA is not availablePhilipp Zabel2017-04-101-0/+6
| | | | | | | | | | | | TRY_FMT already disables the YUYV format if the VDOA is not available. ENUM_FMT must do the same. Fixes: d40e98c13b3e ("[media] coda: support YUYV output if VDOA is used") Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] tvp5150: fix pad format frame heightPhilipp Zabel2017-04-101-1/+1
| | | | | | | | | | | | Even if field order is set to V4L2_FIELD_ALTERNATE, the width and height values in struct v4l2_mbus_framefmt still refer to frame size, not field size. Fixes: 4f57d27be2a5 ("[media] tvp5150: fix tvp5150_fill_fmt()") Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] tvp5150: allow get/set_fmt on the video source padPhilipp Zabel2017-04-101-1/+1
| | | | | | | | | | | | | | To let userspace propagate formats downstream in a media controller scenario, the video source pad (now pad 1, DEMOD_PAD_VID_OUT) must allow setting and getting the format. Incidentally, tvp5150_fill_fmt was implemented for this pad, not for the new analog input pad (now pad 0, DEMOD_PAD_IF_INPUT). Fixes: 55606310e77f ("[media] tvp5150: create the expected number of pads") Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] coda: remove redundant call to v4l2_m2m_get_vqColin Ian King2017-04-101-2/+0
| | | | | | | | | | | | | The call to v4ls_m2m_get_vq is only used to get the return value which is not being used, so it appears to be redundant and can be removed. Detected with CoverityScan, CID#1420674 ("Useless call") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] em28xx: drop last soc_camera linkHans Verkuil2017-04-101-9/+0
| | | | | | | | | | The em28xx driver still used the soc_camera.h header for the ov2640 driver. Since this driver no longer uses soc_camera, that include can be removed. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov2640: add MC supportHans Verkuil2017-04-101-2/+20
| | | | | | | | The MC support is needed by the em28xx driver. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov2640: use standard clk and enable itHans Verkuil2017-04-101-17/+14
| | | | | | | | | Convert v4l2_clk to normal clk and enable the clock. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hugues Fruchet <hugues.fruchet@st.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] ov2640: convert from soc-camera to a standard subdev sensor driverHans Verkuil2017-04-105-81/+27
| | | | | | | | | | Convert ov2640 to a standard subdev driver. The soc-camera driver no longer uses this driver, so it can safely be converted. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hugues Fruchet <hugues.fruchet@st.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] cec: fix confusing CEC_CAP_RC and IS_REACHABLE(CONFIG_RC_CORE) codeHans Verkuil2017-04-101-3/+5
| | | | | | | | | | | It is a bit confusing how CEC_CAP_RC and IS_REACHABLE(CONFIG_RC_CORE) interact. By stripping CEC_CAP_RC at the beginning rather than after #else it should be a bit clearer what is going on. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] cec: Fix runtime BUG when (CONFIG_RC_CORE && !CEC_CAP_RC)Lee Jones2017-04-101-1/+1
| | | | | | | | | | | | | | | | | | Currently when the RC Core is enabled (reachable) core code located in cec_register_adapter() attempts to populate the RC structure with a pointer to the 'parent' passed in by the caller. Unfortunately if the caller did not specify RC capability when calling cec_allocate_adapter(), then there will be no RC structure to populate. This causes a "NULL pointer dereference" error. Fixes: f51e80804f0 ("[media] cec: pass parent device in register(), not allocate()") Signed-off-by: Lee Jones <lee.jones@linaro.org> Cc: <stable@vger.kernel.org> # for v4.10 and up Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] s5p-cec: add cec-notifier support, move out of stagingHans Verkuil2017-04-108-0/+738
| | | | | | | | | | | | | | | | | | By using the CEC notifier framework there is no longer any reason to manually set the physical address. This was the one blocking issue that prevented this driver from going out of staging, so do this move as well. Update the bindings documenting the new hdmi phandle and update exynos4.dtsi accordingly. Tested with my Odroid U3. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> CC: linux-samsung-soc@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] stih-cec: add CEC notifier supportBenjamin Gaignard2017-04-104-0/+424
| | | | | | | | | | | By using the CEC notifier framework there is no longer any reason to manually set the physical address. This was the one blocking issue that prevented this driver from going out of staging, so do this move as well. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] cec: integrate CEC notifier supportHans Verkuil2017-04-101-0/+22
| | | | | | | | | | | Support the CEC notifier framework, simplifying drivers that depend on this. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] media: add CEC notifier supportHans Verkuil2017-04-103-0/+137
| | | | | | | | | | | | | | | | | | | | | Add support for CEC notifiers, which is used to convey CEC physical address information from video drivers to their CEC counterpart driver(s). Based on an earlier version from Russell King: https://patchwork.kernel.org/patch/9277043/ The cec_notifier is a reference counted object containing the CEC physical address state of a video device. When a new notifier is registered the current state will be reported to that notifier at registration time. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] mn88472: implement PER statisticsAntti Palosaari2017-04-101-0/+22
| | | | | | | Implement DVBv5 PER. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] mn88472: implement cnr statisticsAntti Palosaari2017-04-102-3/+88
| | | | | | | Implement DVBv5 CNR. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] mn88472: implement signal strength statisticsAntti Palosaari2017-04-101-2/+26
| | | | | | | Implement DVBv5 signal strength on relative scale. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] rainshadow-cec: new RainShadow Tech HDMI CEC driverHans Verkuil2017-04-105-0/+401
| | | | | | | | | This driver supports the RainShadow Tech USB HDMI CEC adapter. See: http://rainshadowtech.com/HdmiCecUsb.html Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] v4l: vsp1: Register pipe with output WPFKieran Bingham2017-04-101-0/+1
| | | | | | | | | | | | | | | | | The DRM object does not register the pipe with the WPF object. This is used internally throughout the driver as a means of accessing the pipe. As such this breaks operations which require access to the pipe from WPF interrupts. Register the pipe inside the WPF object after it has been declared as the output. Fixes: ff7e97c94d9f ("[media] v4l: vsp1: Store pipeline pointer in rwpf") Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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