Commit 2308d5af authored by Stanimir Varbanov's avatar Stanimir Varbanov Committed by Mauro Carvalho Chehab
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media: v4l: Add Qualcomm custom compressed pixel formats 



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

Signed-off-by: default avatarStanimir Varbanov <stanimir.varbanov@linaro.org>
Acked-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 59685fdf

Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

+19 −0
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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

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;

include/uapi/linux/videodev2.h

+2 −0
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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 */