This patch adds driver for MediaTek's Media Data Path ver.3 (MDP3).
It provides the following functions:
color transform, format conversion, resize, crop, rotate, flip
and additional image quality enhancement.
The MDP3 driver is mainly used for Google Chromebook products to
import the new architecture to set the HW settings as shown below:
User -> V4L2 framework
-> MDP3 driver -> SCP (setting calculations)
-> MDP3 driver -> CMDQ (GCE driver) -> HW
Each modules' related operation control is sited in mtk-mdp3-comp.c
Each modules' register table is defined in file with "mdp_reg_" prefix
GCE related API, operation control sited in mtk-mdp3-cmdq.c
V4L2 m2m device functions are implemented in mtk-mdp3-m2m.c
Probe, power, suspend/resume, system level functions are defined in
mtk-mdp3-core.c
[hverkuil: add 'depends on REMOTEPROC']
Signed-off-by: Ping-Hsun Wu <ping-hsun.wu@mediatek.com> Signed-off-by: daoyuan huang <daoyuan.huang@mediatek.com> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Moudy Ho [Tue, 23 Aug 2022 02:38:01 +0000 (04:38 +0200)]
media: dt-binding: mediatek: add bindings for MediaTek CCORR and WDMA
This patch adds DT binding documentation for MediaTek's CCORR and
WDMA components.
These components exist in both MediaTek's Media Data Path 3(MDP3) and DRM,
and the bindings are placed under the folder "./soc/mediatek" to prevent
duplicate builds.
Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Moudy Ho [Tue, 23 Aug 2022 02:38:00 +0000 (04:38 +0200)]
media: dt-binding: mediatek: add bindings for MediaTek MDP3 components
This patch adds DT binding documents for Media Data Path 3 (MDP3)
a unit in multimedia system combined with several components and
used for scaling and color format convert.
Signed-off-by: Moudy Ho <moudy.ho@mediatek.com> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Miaoqian Lin [Wed, 1 Jun 2022 04:25:14 +0000 (06:25 +0200)]
media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init
of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.
Fixes: df3305156f98 ("[media] v4l: xilinx: Add Xilinx Video IP core") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
media: staging: media: imx: imx7-media-csi: Increase video mem limit
Some high resolution (like Sony IMX492 47Mpix) sensors requre large amount space
for buffering. 64MB is far from sufficient so this patch increases the limit to
512MB.
media: uvcvideo: Use indexed loops in uvc_ctrl_init_ctrl()
As shown by the bug introduced in commit 86f7ef773156 ("media: uvcvideo:
Add support for per-device control mapping overrides"), the loop style
used by uvc_ctrl_init_ctrl() is error-prone. Rewrite the loops to use
indices instead.
Biju Das [Sun, 28 Aug 2022 08:13:34 +0000 (10:13 +0200)]
media: renesas: vsp1: Add support for RZ/G2L VSPD
The RZ/G2L VSPD provides a single VSPD instance. It has the following
sub modules MAU, CTU, RPF, DPR, LUT, BRS, WPF and LIF.
The VSPD block on RZ/G2L SoCs does not have a version register, so
added a new compatible string "renesas,r9a07g044-vsp2" with a data
pointer containing the info structure. Also the reset line is shared
with the DU module.
Biju Das [Sun, 28 Aug 2022 08:13:33 +0000 (10:13 +0200)]
media: renesas: vsp1: Add VSP1_HAS_NON_ZERO_LBA feature bit
As per HW manual V3M and RZ/G2L SoCs has nonzero LIF buffer
attributes. So, introduce a feature bit for handling the same.
This patch also adds separate device info structure for V3M and V3H
SoCs, as both these SoCs share the same model ID, but V3H does not
have VSP1_HAS_NON_ZERO_LBA feature bit.
Biju Das [Sun, 28 Aug 2022 08:13:31 +0000 (10:13 +0200)]
media: renesas: vsp1: Add support to deassert/assert reset line
As the resets DT property is mandatory, and is present in all .dtsi
in mainline, add support to perform deassert/assert using reference
counted reset handle.
Document VSPD found in RZ/G2L SoC. VSPD block is similar to VSP2-D
found on R-Car SoC's, but it does not have a version register and
it has 3 clocks compared to 1 clock on vsp1 and vsp2.
This patch introduces a new compatible 'renesas,r9a07g044-vsp2' to
handle these differences.
Ming Qian [Thu, 18 Aug 2022 03:18:21 +0000 (05:18 +0200)]
media: amphion: fix a bug that vpu core may not resume after suspend
driver will enable the vpu core when request the first instance
on the core.
one vpu core can only support 8 streaming instances in the same
time, the instance won't be added to core's list before streamon.
so the actual instance count may be greater then the number in
the core's list.
in pm resume callback, driver will resume the core immediately if
core's list is not empty.
but this check is not accurate,
if suspend during one instance is requested, but not streamon,
then after suspend, the core won't be resume, and led to instance failure.
use the request_count instead of the core's list to check
whether is the core needed to resume immediately after suspend.
And it can make the pm suspend and resume callback more clear.
Ming Qian [Tue, 26 Jul 2022 03:02:29 +0000 (05:02 +0200)]
media: amphion: don't change the colorspace reported by decoder.
decoder will report the colorspace information
which is parsed from the sequence header,
if they are unspecified, just let application to determine it,
don't change it in driver.
Ming Qian [Fri, 15 Jul 2022 07:38:00 +0000 (09:38 +0200)]
media: amphion: adjust the encoder's value range of gop size
adjust the value range of gop size from [0, 65535] to [1, 8000].
when the gop size is set to a too large value,
it may affect the encoded picture quality.
so constrain it to a reasonable range.
Ming Qian [Fri, 15 Jul 2022 07:15:49 +0000 (09:15 +0200)]
media: amphion: insert picture startcode after seek for vc1g format
For format vc1, the amphion vpu requires driver to
help insert some custom startcode before sequence and frame.
the startcode is different for vc1l and vc1g format.
But the sequence startcode is only needed at the beginning,
and it's not expected after seek.
driver need to treat the codec header and the first frame after seek
as a normal frame, and insert picture startcode for it.
In previous patch, I just fix it for vc1l format,
and should fix the similar issue for vc1g too.
Fixes: e670f5d672ef (media: amphion: only insert the first sequence startcode for vc1l format) Signed-off-by: Ming Qian <ming.qian@nxp.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Dmitry Osipenko [Thu, 18 Aug 2022 20:33:08 +0000 (22:33 +0200)]
media: cedrus: Fix endless loop in cedrus_h265_skip_bits()
The busy status bit may never de-assert if number of programmed skip
bits is incorrect, resulting in a kernel hang because the bit is polled
endlessly in the code. Fix it by adding timeout for the bit-polling.
This problem is reproducible by setting the data_bit_offset field of
the HEVC slice params to a wrong value by userspace.
Cc: stable@vger.kernel.org Fixes: 7678c5462680 (media: cedrus: Fix decoding for some HEVC videos) Reported-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Dmitry Osipenko [Thu, 18 Aug 2022 20:33:07 +0000 (22:33 +0200)]
media: cedrus: Set the platform driver data earlier
The cedrus_hw_resume() crashes with NULL deference on driver probe if
runtime PM is disabled because it uses platform data that hasn't been
set up yet. Fix this by setting the platform data earlier during probe.
Cc: stable@vger.kernel.org Fixes: 50e761516f2b (media: platform: Add Cedrus VPU decoder driver) Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Samuel Holland <samuel@sholland.org> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Nicolas Dufresne [Thu, 18 Aug 2022 20:33:06 +0000 (22:33 +0200)]
media: cedrus: Fix watchdog race condition
The watchdog needs to be scheduled before we trigger the decode
operation, otherwise there is a risk that the decoder IRQ will be
called before we have schedule the watchdog. As a side effect, the
watchdog would never be cancelled and its function would be called
at an inappropriate time.
This was observed while running Fluster with GStreamer as a backend.
Some programming error would cause the decoder IRQ to be call very
quickly after the trigger. Later calls into the driver would deadlock
due to the unbalanced state.
Cc: stable@vger.kernel.org Fixes: 7c38a551bda1 ("media: cedrus: Add watchdog for job completion") Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
media: mediatek: vcodec: add decoder compatible to support mt8188
1: add mt8188's compatible name: mediatek,mt8188-vcodec-dec.
2: mt8188 is lat single core architecture, using mtk_lat_sig_core_pdata to
initialize private data.
3: Getting mt8188's chip name according to decoder compatible name.
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Irui Wang [Wed, 20 Jul 2022 08:57:30 +0000 (10:57 +0200)]
media: mediatek: vcodec: Fix bitstream crop information error
Usually, the real bitstream width and height will set to driver
by vidioc_s_fmt, and vidioc_try_fmt() does align to get the
buffer width and height, driver calculate the encoded bitstream
crop information through them. The aligned resolution will be set
as real resolution now if user didn't set crop info by
V4L2_SEL_TGT_CROP, and the encoded bitstream may exist green line
because of crop information error.
Irui Wang [Wed, 20 Jul 2022 08:57:29 +0000 (10:57 +0200)]
media: mediatek: vcodec: Remove encoder driver get IRQ resource
The "platform_get_resource(pdev, IORESOURCE_IRQ, 0)" is no longer
used after commit a1a2b7125e107("of/platform: Drop static setup of
IRQ resource from DT core"), so just remove the function in
encoder driver to avoid driver probe failed.
Signed-off-by: Irui Wang <irui.wang@mediatek.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Irui Wang [Wed, 20 Jul 2022 08:57:26 +0000 (10:57 +0200)]
media: mediatek: vcodec: Add encoder driver support for 34-bit iova
Encoder driver got iova from IOMMU is 34-bit, for example:
Here is the sample code:
encoder input frame buffer dma address is:
frm_buf =
vb2_dma_contig_plane_dma_addr(&vb2_v4l2_buffer->vb2_buf, 0);
the value of frm_buf is 0x1_ff30_0000.
encoder driver got the frm_buf and send the iova to SCP firmware
through SCP IPI message, then write to encoder hardware in SCP.
The iova is stored in IPI message as uint32_t data type, so the
value will be truncated from *0x1_ff30_0000* to *0xff30_0000*,
and then *0xff30_0000* will be written to encoder hardware, but
IOMMU will help to add the high *0x1_* bit back, so IOMMU can
translate the iova to PA correctly, encoder hardware can access
the correct memory for encoding.
Another reason to do this is the encoder hardware can't access
the 34-bit iova, IOMMU will help to add the remaining high bits
of iova. But for mt8188, encoder hardware can access 34-bit iova
directly, and encoder driver need write all 34 bits because
IOMMU can't help driver do this if the hardware support access
34-bit iova.
For the reasons above, this patch is added to support transfer
34-bit iova between kernel and SCP encoder driver. Use uint64_t
data type to store the iova, for compatibility with old chipsets,
add some new struct definitions for 34-bit.
[hverkuil: initialize wb and wb_34 to NULL]
Signed-off-by: Irui Wang <irui.wang@mediatek.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Tomi Valkeinen [Tue, 26 Apr 2022 07:06:18 +0000 (09:06 +0200)]
media: ti: cal: fix wdma irq for metadata
CAL HW interrupts are inherently racy. If we get both start and end
interrupts, we don't know what has happened: did the DMA for a single
frame start and end, or did one frame end and a new frame start?
Usually for normal pixel frames we get the interrupts separately. If
we do get both, we have to guess. The assumption in the code is that the
active vertical area is larger than the blanking vertical area, and thus
it is more likely that we get the end of the old frame and the start of
a new frame.
However, for embedded data, which is only a few lines high, we always
get both interrupts. Here the assumption is that we get both for the
same frame.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Tomi Valkeinen [Tue, 26 Apr 2022 07:06:17 +0000 (09:06 +0200)]
media: ti: cal: combine wdma irq handling
Instead of handling the WDMA START and END interrupts separately, we
need to handle both at the same time to better manage the inherent race
conditions related to CAL interrupts.
Change the code so that we have a single function,
cal_irq_handle_wdma(), which gets two booleans, start and end, as
parameters, which allows us to manage the race conditions in the
following patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Tomi Valkeinen [Tue, 26 Apr 2022 07:06:16 +0000 (09:06 +0200)]
media: ti: cal: use CSI-2 frame number for seq number
The userspace needs a way to match received metadata buffers to pixel
data buffers. The obvious way to do this is to use the CSI-2 frame
number, as both the metadata and the pixel data have the same frame
number as they come from the same frame.
However, we don't have means to convey the frame number to userspace. We
do have the 'sequence' field, which with a few tricks can be used for
this purpose.
To achieve this, track the frame number for each virtual channel and
increase the sequence for each virtual channel by frame-number -
previous-frame-number, also taking into account the eventual wrap of the
CSI-2 frame number. If the CSI-2 peripheral does not support frame
numbers, CAL increases the frame number register by one each frame.
This way we get a monotonically increasing sequence number which is
common to all streams using the same virtual channel.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Tomi Valkeinen [Tue, 26 Apr 2022 07:06:14 +0000 (09:06 +0200)]
media: ti: cal: fix useless variable init
'ret' is initialized needlessly in cal_legacy_try_fmt_vid_cap(). We can
also move the variable to the for block, which is the only place where
it is used.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Daniel Lee Kruse [Fri, 19 Aug 2022 03:59:18 +0000 (05:59 +0200)]
media: cx23885: reset DMA on AMD Renior/Cezanne IOMMU due to RiSC engine stall
MythTv is unable to scan channels with APUs with the Renior IOMMU
that is also contained in the Cezanne line of APUs. This issue
was discovered on the 5.15 version the kernel. This patch adds
the IOMMU PCI ID to the broken_dev_id array.
This patch was developed with 5.19 of the media_tree repo.
[hverkuil: cleaned up the commit log a bit]
Signed-off-by: Daniel Lee Kruse <daniel.lee.kruse@proton.me> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Deborah Brouwer [Thu, 11 Aug 2022 20:37:56 +0000 (22:37 +0200)]
media: v4l2-ctrls: Fix typo in VP8 comment
The comment for the VP8 loop filter flags uses the partially wrong name
for the flags. Unlike the other VP8 flag names, the loop filter flag names
don't have "_FLAG" in them. Change the comment so that it matches the
actual flag definitions in the header.
Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Dongliang Mu [Thu, 11 Aug 2022 04:57:00 +0000 (06:57 +0200)]
media: airspy: fix memory leak in airspy probe
The commit ca9dc8d06ab6 ("media: airspy: respect the DMA coherency
rules") moves variable buf from stack to heap, however, it only frees
buf in the error handling code, missing deallocation in the success
path.
Fix this by freeing buf in the success path since this variable does not
have any references in other code.
Fixes: ca9dc8d06ab6 ("media: airspy: respect the DMA coherency rules") Reported-by: syzbot+bb25f85e5aa482864dc0@syzkaller.appspotmail.com Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com> Reviewed-by: Tommaso Merciai <tommaso.merciai@amarulasolution.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
media: tm6000: Fix unused value in vidioc_try_fmt_vid_cap()
Coverity warns of an unused value:
assigned_value: Assign the value of the variable f->fmt.pix.field
to field here, but that stored value is overwritten.
before it can be used.
919 field = f->fmt.pix.field;
920
value_overwrite: Overwriting previous write to field with
the value of V4L2_FIELD_INTERLACED.
921 field = V4L2_FIELD_INTERLACED;
Zheyu Ma [Thu, 28 Jul 2022 02:23:38 +0000 (04:23 +0200)]
media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
When the driver calls cx88_risc_buffer() to prepare the buffer, the
function call may fail, resulting in a empty buffer and null-ptr-deref
later in buffer_queue().
Liang He [Wed, 20 Jul 2022 14:30:03 +0000 (16:30 +0200)]
media: exynos4-is: fimc-is: Add of_node_put() when breaking out of loop
In fimc_is_register_subdevs(), we need to call of_node_put() for
the reference 'i2c_bus' when breaking out of the
for_each_compatible_node() which has increased the refcount.
Hans Verkuil [Thu, 11 Aug 2022 09:17:48 +0000 (11:17 +0200)]
media: saa7146: deprecate hexium_gemini/orion, mxb and ttpci
Deprecate the hexium_gemini, hexium_orion, mxb and ttpci saa7146-based
drivers: these drivers do not use the vb2 framework for video streaming,
instead it uses the old videobuf framework.
We want to get rid of these old drivers, so deprecated these for future
removal.
[hverkuil: update MAINTAINERS file]
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Hans Verkuil [Thu, 11 Aug 2022 09:17:47 +0000 (11:17 +0200)]
media: davinci: deprecate dm644x_ccdc, dm355_cddc and dm365_isif
Deprecate the dm644x_ccdc, dm355_cddc and dm365_isif davinci drivers:
all three depend on the vpfe_capture driver, and that driver does not
use the vb2 framework for video streaming, instead it uses the old
videobuf framework.
We want to get rid of these old drivers, so deprecated these for future
removal.
Note that include/media/davinci/vpfe_capture.h can't be moved to staging
since it is used in arch/arm/mach-davinci/davinci.h.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Hans Verkuil [Wed, 10 Aug 2022 11:54:45 +0000 (13:54 +0200)]
media: staging/media: add a STAGING_MEDIA_DEPRECATED option
Add a kernel config option to build deprecated media drivers
that are scheduled for removal. Move stkwebcam to the deprecated
directory to make it clear that this driver is deprecated.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Hans Verkuil [Wed, 10 Aug 2022 13:01:23 +0000 (15:01 +0200)]
media: vb2: videobuf -> videobuf2
It is confusing to use the term 'videobuf' or 'video-buf' since that
usually refers to the old videobuf version 1 framework. Rename to
'videobuf2' or vb2.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Jason Wang [Thu, 4 Aug 2022 12:01:48 +0000 (14:01 +0200)]
media: v4l2-flash: Fix comment typo
The double `the' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Jason Wang [Thu, 4 Aug 2022 11:58:25 +0000 (13:58 +0200)]
media: technisat-usb2: Fix comment typo
The double `is' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Jason Wang [Thu, 4 Aug 2022 11:51:38 +0000 (13:51 +0200)]
media: drxk: Fix comment typo
The double `for' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Jason Wang [Sat, 16 Jul 2022 04:31:02 +0000 (06:31 +0200)]
media: sun6i-csi: Fix comment typo
The double `the' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Jason Wang [Fri, 15 Jul 2022 05:16:16 +0000 (07:16 +0200)]
media: dib8000: Fix comment typo
The double `this' is duplicated in line 3215, remove one.
[hverkuil: while we're at it, fix the 'succedeed' typo as well]
Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Add a V4L2 mem-to-mem driver for the Vivante DW100 Dewarp Processor IP
core found on i.MX8MP SoC.
The processor core applies a programmable geometrical transformation on
input images to correct distorsion introduced by lenses.
The transformation function is exposed as a grid map with 16x16 pixel
macroblocks indexed using X, Y vertex coordinates.
The dewarping map can be set from application through a dedicated v4l2
control. If not set or invalid, the driver computes an identity map
prior to starting the processing engine.
The driver supports scaling, cropping and pixel format conversion.
The DW100 driver gets the dewarping mapping as a binary blob from the
userspace application through a custom control.
The blob format is hardware specific so create a dedicated control for
this purpose.
projects / users / jedix / linux-maple.git / log