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Subject: media: v4l: Add HEXTILE compressed format
Author: Marvin Lin <milkf...@gmail.com>
Date: Fri Sep 22 14:24:02 2023 +0800
Add HEXTILE compressed format which is defined in Remote Framebuffer
Protocol (RFC 6143, chapter 7.7.4 Hextile Encoding) and is used by
Encoding Compression Engine (ECE) present on Nuvoton NPCM SoCs.
Signed-off-by: Marvin Lin <milkf...@gmail.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufre...@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Documentation/userspace-api/media/v4l/pixfmt-reserved.rst | 7 +++++++
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/uapi/linux/videodev2.h | 1 +
3 files changed, 9 insertions(+)
---
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
index 296ad2025e8d..886ba7b08d6b 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
@@ -288,6 +288,13 @@ please make a proposal on the linux-media mailing list.
- 'MT2110R'
- This format is two-planar 10-Bit raster mode and having similitude with
``V4L2_PIX_FMT_MM21`` in term of alignment and tiling. Used for AVC.
+ * .. _V4L2-PIX-FMT-HEXTILE:
+
+ - ``V4L2_PIX_FMT_HEXTILE``
+ - 'HXTL'
+ - Compressed format used by Nuvoton NPCM video driver. This format is
+ defined in Remote Framebuffer Protocol (RFC 6143, chapter 7.7.4 Hextile
+ Encoding).
.. raw:: latex
\normalsize
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c
b/drivers/media/v4l2-core/v4l2-ioctl.c
index f4d9d6279094..9b1de54ce379 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1510,6 +1510,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break;
case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile
Mode"; break;
case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster
Mode"; break;
+ case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed
Format"; break;
default:
if (fmt->description[0])
return;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 78260e5d9985..c3d4e490ce7c 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -804,6 +804,7 @@ struct v4l2_pix_format {
#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 */
#define V4L2_PIX_FMT_AJPG v4l2_fourcc('A', 'J', 'P', 'G') /* Aspeed JPEG */
+#define V4L2_PIX_FMT_HEXTILE v4l2_fourcc('H', 'X', 'T', 'L') /* Hextile
compressed */
/* 10bit raw 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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