| Message ID | 20210706124034.773503-1-stanimir.varbanov@linaro.org |
|---|---|
| Headers | show |
| Series | Qualcomm custom compressed pixfmt | expand |
Le mardi 06 juillet 2021 à 15:40 +0300, Stanimir Varbanov a écrit : > 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> > --- > .../media/v4l/pixfmt-reserved.rst | 18 ++++++++++++++++++ > drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++ > include/uapi/linux/videodev2.h | 2 ++ > 3 files changed, 22 insertions(+) > > diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst > index 0b879c0da713..136e9832db0c 100644 > --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst > +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst > @@ -260,6 +260,24 @@ please make a proposal on the linux-media mailing list. > of tiles, resulting in 32-aligned resolutions for the luminance plane > and 16-aligned resolutions for the chrominance plane (with 2x2 > subsampling). > + * .. _V4L2-PIX-FMT-QC08C: > + > + - ``V4L2_PIX_FMT_QC08C`` > + - 'QC08C' > + - Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms. > + 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. nit: Considering we are not yet adopting DRM modifiers, perhaps we could cross- reference the documentation, or at least document which DRM format/modifier pair this will match too on the other side of the kernel domain fence ? This is of course just for integrator convenience. > + * .. _V4L2-PIX-FMT-QC10C: > + > + - ``V4L2_PIX_FMT_QC10C`` > + - 'QC10C' > + - Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms. > + The used compression is lossless and it is used by various multimedia > + hardware blocks like GPU, display controllers, ISP and video. > + It contains four planes for progressive video and eight planes for > + interlaced video. > > .. raw:: latex > > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c > index 05d5db3d85e5..76d4e4ac18e8 100644 > --- a/drivers/media/v4l2-core/v4l2-ioctl.c > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c > @@ -1416,6 +1416,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) > 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_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 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; > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h > index 9260791b8438..dc1b714ccf6b 100644 > --- a/include/uapi/linux/videodev2.h > +++ b/include/uapi/linux/videodev2.h > @@ -737,6 +737,8 @@ struct v4l2_pix_format { > #define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */ > #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 */