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    Subject[PATCH v2 01/10] media: Add P012 and P012M video format
    Date
    P012 is a YUV format with 12-bits per component with interleaved UV,
    like NV12, expanded to 16 bits.
    Data in the 12 high bits, zeros in the 4 low bits,
    arranged in little endian order.
    And P012M has two non contiguous planes.

    Signed-off-by: Ming Qian <ming.qian@nxp.com>
    ---
    .../media/v4l/pixfmt-yuv-planar.rst | 94 +++++++++++++++++++
    drivers/media/v4l2-core/v4l2-common.c | 2 +
    drivers/media/v4l2-core/v4l2-ioctl.c | 2 +
    include/uapi/linux/videodev2.h | 2 +
    4 files changed, 100 insertions(+)

    diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
    index f1d5bb7b806d..aa37c3de8808 100644
    --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
    +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
    @@ -123,6 +123,20 @@ All components are stored with the same number of bits per component.
    - Cb, Cr
    - Yes
    - 4x4 tiles
    + * - V4L2_PIX_FMT_P012
    + - 'P012'
    + - 12
    + - 4:2:0
    + - Cb, Cr
    + - Yes
    + - Linear
    + * - V4L2_PIX_FMT_P012M
    + - 'PM12'
    + - 12
    + - 4:2:0
    + - Cb, Cr
    + - Yes
    + - Linear
    * - V4L2_PIX_FMT_NV16
    - 'NV16'
    - 8
    @@ -586,6 +600,86 @@ Data in the 10 high bits, zeros in the 6 low bits, arranged in little endian ord
    - Cb\ :sub:`11`
    - Cr\ :sub:`11`

    +.. _V4L2-PIX-FMT-P012:
    +.. _V4L2-PIX-FMT-P012M:
    +
    +P012 and P012M
    +--------------
    +
    +P012 is like NV12 with 12 bits per component, expanded to 16 bits.
    +Data in the 12 high bits, zeros in the 4 low bits, arranged in little endian order.
    +
    +.. flat-table:: Sample 4x4 P012 Image
    + :header-rows: 0
    + :stub-columns: 0
    +
    + * - start + 0:
    + - Y'\ :sub:`00`
    + - Y'\ :sub:`01`
    + - Y'\ :sub:`02`
    + - Y'\ :sub:`03`
    + * - start + 8:
    + - Y'\ :sub:`10`
    + - Y'\ :sub:`11`
    + - Y'\ :sub:`12`
    + - Y'\ :sub:`13`
    + * - start + 16:
    + - Y'\ :sub:`20`
    + - Y'\ :sub:`21`
    + - Y'\ :sub:`22`
    + - Y'\ :sub:`23`
    + * - start + 24:
    + - Y'\ :sub:`30`
    + - Y'\ :sub:`31`
    + - Y'\ :sub:`32`
    + - Y'\ :sub:`33`
    + * - start + 32:
    + - Cb\ :sub:`00`
    + - Cr\ :sub:`00`
    + - Cb\ :sub:`01`
    + - Cr\ :sub:`01`
    + * - start + 40:
    + - Cb\ :sub:`10`
    + - Cr\ :sub:`10`
    + - Cb\ :sub:`11`
    + - Cr\ :sub:`11`
    +
    +.. flat-table:: Sample 4x4 P012M Image
    + :header-rows: 0
    + :stub-columns: 0
    +
    + * - start0 + 0:
    + - Y'\ :sub:`00`
    + - Y'\ :sub:`01`
    + - Y'\ :sub:`02`
    + - Y'\ :sub:`03`
    + * - start0 + 8:
    + - Y'\ :sub:`10`
    + - Y'\ :sub:`11`
    + - Y'\ :sub:`12`
    + - Y'\ :sub:`13`
    + * - start0 + 16:
    + - Y'\ :sub:`20`
    + - Y'\ :sub:`21`
    + - Y'\ :sub:`22`
    + - Y'\ :sub:`23`
    + * - start0 + 24:
    + - Y'\ :sub:`30`
    + - Y'\ :sub:`31`
    + - Y'\ :sub:`32`
    + - Y'\ :sub:`33`
    + * -
    + * - start1 + 0:
    + - Cb\ :sub:`00`
    + - Cr\ :sub:`00`
    + - Cb\ :sub:`01`
    + - Cr\ :sub:`01`
    + * - start1 + 8:
    + - Cb\ :sub:`10`
    + - Cr\ :sub:`10`
    + - Cb\ :sub:`11`
    + - Cr\ :sub:`11`
    +

    Fully Planar YUV Formats
    ========================
    diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
    index 40f56e044640..a5e8ba370d33 100644
    --- a/drivers/media/v4l2-core/v4l2-common.c
    +++ b/drivers/media/v4l2-core/v4l2-common.c
    @@ -267,6 +267,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
    { .format = V4L2_PIX_FMT_NV24, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 1, .vdiv = 1 },
    { .format = V4L2_PIX_FMT_NV42, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 1, .vdiv = 1 },
    { .format = V4L2_PIX_FMT_P010, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
    + { .format = V4L2_PIX_FMT_P012, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .hdiv = 2, .vdiv = 2 },

    { .format = V4L2_PIX_FMT_YUV410, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 4, .vdiv = 4 },
    { .format = V4L2_PIX_FMT_YVU410, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 4, .vdiv = 4 },
    @@ -292,6 +293,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
    { .format = V4L2_PIX_FMT_NV21M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 2 },
    { .format = V4L2_PIX_FMT_NV16M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
    { .format = V4L2_PIX_FMT_NV61M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
    + { .format = V4L2_PIX_FMT_P012M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .hdiv = 2, .vdiv = 2 },

    /* Bayer RGB formats */
    { .format = V4L2_PIX_FMT_SBGGR8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
    diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
    index 8e0a0ff62a70..067dbdd0a9ef 100644
    --- a/drivers/media/v4l2-core/v4l2-ioctl.c
    +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
    @@ -1348,6 +1348,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
    case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break;
    case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break;
    case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break;
    + case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break;
    case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;
    case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;
    case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;
    @@ -1358,6 +1359,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
    case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break;
    case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break;
    case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break;
    + case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break;
    case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
    case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
    case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
    diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
    index 1befd181a4cc..5448aa3b7858 100644
    --- a/include/uapi/linux/videodev2.h
    +++ b/include/uapi/linux/videodev2.h
    @@ -626,12 +626,14 @@ struct v4l2_pix_format {
    #define V4L2_PIX_FMT_NV24 v4l2_fourcc('N', 'V', '2', '4') /* 24 Y/CbCr 4:4:4 */
    #define V4L2_PIX_FMT_NV42 v4l2_fourcc('N', 'V', '4', '2') /* 24 Y/CrCb 4:4:4 */
    #define V4L2_PIX_FMT_P010 v4l2_fourcc('P', '0', '1', '0') /* 24 Y/CbCr 4:2:0 10-bit per component */
    +#define V4L2_PIX_FMT_P012 v4l2_fourcc('P', '0', '1', '2') /* 24 Y/CbCr 4:2:0 12-bit per component */

    /* two non contiguous planes - one Y, one Cr + Cb interleaved */
    #define V4L2_PIX_FMT_NV12M v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 */
    #define V4L2_PIX_FMT_NV21M v4l2_fourcc('N', 'M', '2', '1') /* 21 Y/CrCb 4:2:0 */
    #define V4L2_PIX_FMT_NV16M v4l2_fourcc('N', 'M', '1', '6') /* 16 Y/CbCr 4:2:2 */
    #define V4L2_PIX_FMT_NV61M v4l2_fourcc('N', 'M', '6', '1') /* 16 Y/CrCb 4:2:2 */
    +#define V4L2_PIX_FMT_P012M v4l2_fourcc('P', 'M', '1', '2') /* 24 Y/CbCr 4:2:0 12-bit per component */

    /* three planes - Y Cb, Cr */
    #define V4L2_PIX_FMT_YUV410 v4l2_fourcc('Y', 'U', 'V', '9') /* 9 YUV 4:1:0 */
    --
    2.38.1
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