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Subject: media: v4l: Add Qualcomm custom compressed pixel formats
Author:  Stanimir Varbanov <[email protected]>
Date:    Thu Mar 3 15:06:31 2022 +0000

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

Signed-off-by: Stanimir Varbanov <[email protected]>
Acked-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 .../userspace-api/media/v4l/pixfmt-reserved.rst       | 19 +++++++++++++++++++
 drivers/media/v4l2-core/v4l2-ioctl.c                  |  2 ++
 include/uapi/linux/videodev2.h                        |  2 ++
 3 files changed, 23 insertions(+)

---

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst 
b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
index cabfa34b7db5..0ff68cd8cf62 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
@@ -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
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c 
b/drivers/media/v4l2-core/v4l2-ioctl.c
index db5947fbd9a9..e2636539c9db 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -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;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 3768a0a80830..6d465dc443b7 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -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 */

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