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media: v4l: Add Qualcomm custom compressed pixel formats

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Add custom Qualcomm raw compressed pixel formats. They are
used in Qualcomm SoCs to optimize the interconnect bandwidth.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Stanimir Varbanov 2022-03-03 15:06:31 +00:00 committed by Mauro Carvalho Chehab
parent 59685fdfac
commit 2308d5aff8
3 changed files with 23 additions and 0 deletions
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19
Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
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@ -239,6 +239,25 @@ please make a proposal on the linux-media mailing list.
It remains an opaque intermediate format and the MDP hardware must be
used to convert ``V4L2_PIX_FMT_MT21C`` to ``V4L2_PIX_FMT_NV12M``,
``V4L2_PIX_FMT_YUV420M`` or ``V4L2_PIX_FMT_YVU420``.
* .. _V4L2-PIX-FMT-QC08C:
- ``V4L2_PIX_FMT_QC08C``
- 'QC08C'
- Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms.
It is an opaque intermediate format. The used compression is lossless
and it is used by various multimedia hardware blocks like GPU, display
controllers, ISP and video accelerators.
It contains four planes for progressive video and eight planes for
interlaced video.
* .. _V4L2-PIX-FMT-QC10C:
- ``V4L2_PIX_FMT_QC10C``
- 'QC10C'
- Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms.
It is an opaque intermediate format. The used compression is lossless
and it is used by various multimedia hardware blocks like GPU, display
controllers, ISP and video accelerators.
It contains four planes for progressive video.
.. raw:: latex
\normalsize

2
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1445,6 +1445,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break;
case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break;
default:
if (fmt->description[0])
return;

2
include/uapi/linux/videodev2.h
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@ -746,6 +746,8 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_INZI v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
#define V4L2_PIX_FMT_CNF4 v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */
#define V4L2_PIX_FMT_QC08C v4l2_fourcc('Q', '0', '8', 'C') /* Qualcomm 8-bit compressed */
#define V4L2_PIX_FMT_QC10C v4l2_fourcc('Q', '1', '0', 'C') /* Qualcomm 10-bit compressed */
/* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
#define V4L2_PIX_FMT_IPU3_SBGGR10 v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */