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media: Rename V4L2_PIX_FMT_SUNXI_TILED_NV12 to V4L2_PIX_FMT_NV12_32L32

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The V4L2_PIX_FMT_SUNXI_TILED_NV12 format is actually a fairly
common NV12 tiled format, with 32x32 linear tiles. Rename the format
and move its documentation together with the other tiled NV12 formats.

Keep V4L2_PIX_FMT_SUNXI_TILED_NV12 for application compatibility.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Ezequiel Garcia 2021-08-05 04:47:49 +02:00 committed by Mauro Carvalho Chehab
parent 9be0352dae
commit b84f60a307
8 changed files with 24 additions and 23 deletions
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14
Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
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@ -246,20 +246,6 @@ please make a proposal on the linux-media mailing list.
It is 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-SUNXI-TILED-NV12:
- ``V4L2_PIX_FMT_SUNXI_TILED_NV12``
- 'ST12'
- Two-planar NV12-based format used by the video engine found on Allwinner
(codenamed sunxi) platforms, with 32x32 tiles for the luminance plane
and 32x64 tiles for the chrominance plane. The data in each tile is
stored in linear order, within the tile bounds. Each tile follows the
previous one linearly in memory (from left to right, top to bottom).
The associated buffer dimensions are aligned to match an integer number
of tiles, resulting in 32-aligned resolutions for the luminance plane
and 16-aligned resolutions for the chrominance plane (with 2x2
subsampling).
.. raw:: latex

13
Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
View File

@ -254,14 +254,16 @@ of the luma plane.
.. _V4L2-PIX-FMT-NV12MT:
.. _V4L2-PIX-FMT-NV12MT-16X16:
.. _V4L2-PIX-FMT-NV12-32L32:
NV12MT and MV12MT_16X16
-----------------------
Tiled NV12
----------
Semi-planar YUV 4:2:0 formats, using macroblock tiling. The chroma plane is
subsampled by 2 in each direction. Chroma lines contain half the number of
pixels and the same number of bytes as luma lines, and the chroma plane
contains half the number of lines of the luma plane.
contains half the number of lines of the luma plane. Each tile follows the
previous one linearly in memory (from left to right, top to bottom).
``V4L2_PIX_FMT_NV12MT_16X16`` stores pixel in 2D 16x16 macroblocks, and stores
macroblocks linearly in memory. The line stride and image height must be
@ -276,6 +278,11 @@ If the vertical resolution is an odd number of macroblocks, the last row of
macroblocks is stored in linear order. The layouts of the luma and chroma
planes are identical.
``V4L2_PIX_FMT_NV12_32L32`` stores pixel in 32x32 tiles, and stores
tiles linearly in memory. The line stride and image height must be
aligned to a multiple of 32. The layouts of the luma and chroma planes are
identical.
.. _nv12mt:
.. kernel-figure:: nv12mt.svg

1
Documentation/userspace-api/media/videodev2.h.rst.exceptions
View File

@ -187,6 +187,7 @@ replace define V4L2_CAP_IO_MC device-capabilities
# V4L2 pix flags
replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format`
replace define V4L2_PIX_FMT_FLAG_PREMUL_ALPHA format-flags
replace define V4L2_PIX_FMT_SUNXI_TILED_NV12 :c:type:`v4l2_pix_format`
# V4L2 format flags
replace define V4L2_FMT_FLAG_COMPRESSED fmtdesc-flags

2
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1282,6 +1282,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break;
case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
@ -1415,7 +1416,6 @@ 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_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
default:
if (fmt->description[0])
return;

2
drivers/staging/media/sunxi/cedrus/cedrus.c
View File

@ -288,7 +288,7 @@ static int cedrus_open(struct file *file)
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto err_ctrls;
}
ctx->dst_fmt.pixelformat = V4L2_PIX_FMT_SUNXI_TILED_NV12;
ctx->dst_fmt.pixelformat = V4L2_PIX_FMT_NV12_32L32;
cedrus_prepare_format(&ctx->dst_fmt);
ctx->src_fmt.pixelformat = V4L2_PIX_FMT_MPEG2_SLICE;
/*

2
drivers/staging/media/sunxi/cedrus/cedrus_hw.c
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@ -99,7 +99,7 @@ void cedrus_dst_format_set(struct cedrus_dev *dev,
cedrus_write(dev, VE_PRIMARY_FB_LINE_STRIDE, reg);
break;
case V4L2_PIX_FMT_SUNXI_TILED_NV12:
case V4L2_PIX_FMT_NV12_32L32:
default:
reg = VE_PRIMARY_OUT_FMT_TILED_32_NV12;
cedrus_write(dev, VE_PRIMARY_OUT_FMT, reg);

4
drivers/staging/media/sunxi/cedrus/cedrus_video.c
View File

@ -56,7 +56,7 @@ static struct cedrus_format cedrus_formats[] = {
.capabilities = CEDRUS_CAPABILITY_VP8_DEC,
},
{
.pixelformat = V4L2_PIX_FMT_SUNXI_TILED_NV12,
.pixelformat = V4L2_PIX_FMT_NV12_32L32,
.directions = CEDRUS_DECODE_DST,
},
{
@ -124,7 +124,7 @@ void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
sizeimage = max_t(u32, SZ_1K, sizeimage);
break;
case V4L2_PIX_FMT_SUNXI_TILED_NV12:
case V4L2_PIX_FMT_NV12_32L32:
/* 32-aligned stride. */
bytesperline = ALIGN(width, 32);

9
include/uapi/linux/videodev2.h
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@ -627,6 +627,9 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_YUV444M v4l2_fourcc('Y', 'M', '2', '4') /* 24 YUV444 planar */
#define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24 YVU444 planar */
/* Tiled YUV formats */
#define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12 Y/CbCr 4:2:0 32x32 tiles */
/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */
#define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */
@ -734,7 +737,6 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_Z16 v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */
#define V4L2_PIX_FMT_MT21C v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode */
#define V4L2_PIX_FMT_INZI v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
#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 */
@ -2615,4 +2617,9 @@ struct v4l2_create_buffers {
#define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */
/* Deprecated definitions kept for backwards compatibility */
#ifndef __KERNEL__
#define V4L2_PIX_FMT_SUNXI_TILED_NV12 V4L2_PIX_FMT_NV12_32L32
#endif
#endif /* _UAPI__LINUX_VIDEODEV2_H */