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media: imx: utils: Make imx_media_pixfmt handle variable number of codes

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The imx_media_pixfmt structures include a codes member that stores
media bus codes as a fixed array of 4 integers. The functions dealing
with the imx_media_pixfmt structures assume that the array of codes is
terminated by a 0 element. This mechanism is fragile, as demonstrated
by several instances of the structure containing 4 non-zero codes.

Fix this by turning the array into a pointer, and providing an
IMX_BUS_FMTS macro to initialize the codes member with a guaranteed 0
element at the end.

[Fixed a NULL deref of the codes pointer in a couple places]
[Added more comments for the struct imx_media_pixfmt members,
 including a bold NOTE! for future developers that codes pointer
 is NULL for the in-memory-only formats]

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.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:
Laurent Pinchart 2020-04-06 18:39:02 +02:00 committed by Mauro Carvalho Chehab
parent f0f71ae440
commit c943b6947f
3 changed files with 46 additions and 39 deletions
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4
drivers/staging/media/imx/imx-media-capture.c
View file

@ -95,7 +95,7 @@ static int capture_enum_framesizes(struct file *file, void *fh,
if (!cc)
return -EINVAL;
fse.code = cc->codes[0];
fse.code = cc->codes ? cc->codes[0] : 0;
ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_size, NULL, &fse);
if (ret)
@ -137,7 +137,7 @@ static int capture_enum_frameintervals(struct file *file, void *fh,
if (!cc)
return -EINVAL;
fie.code = cc->codes[0];
fie.code = cc->codes ? cc->codes[0] : 0;
ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_interval,
NULL, &fie);

74
drivers/staging/media/imx/imx-media-utils.c
View file

@ -7,6 +7,8 @@
#include <linux/module.h>
#include "imx-media.h"
#define IMX_BUS_FMTS(fmt...) (const u32[]) {fmt, 0}
/*
* List of supported pixel formats for the subdevs.
*/
@ -14,18 +16,18 @@ static const struct imx_media_pixfmt pixel_formats[] = {
/*** YUV formats start here ***/
{
.fourcc = V4L2_PIX_FMT_UYVY,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_UYVY8_2X8,
MEDIA_BUS_FMT_UYVY8_1X16
},
),
.cs = IPUV3_COLORSPACE_YUV,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_YUYV,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_YUYV8_2X8,
MEDIA_BUS_FMT_YUYV8_1X16
},
),
.cs = IPUV3_COLORSPACE_YUV,
.bpp = 16,
}, {
@ -55,7 +57,7 @@ static const struct imx_media_pixfmt pixel_formats[] = {
.planar = true,
}, {
.fourcc = V4L2_PIX_FMT_YUV32,
.codes = {MEDIA_BUS_FMT_AYUV8_1X32},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_AYUV8_1X32),
.cs = IPUV3_COLORSPACE_YUV,
.bpp = 32,
.ipufmt = true,
@ -63,16 +65,16 @@ static const struct imx_media_pixfmt pixel_formats[] = {
/*** RGB formats start here ***/
{
.fourcc = V4L2_PIX_FMT_RGB565,
.codes = {MEDIA_BUS_FMT_RGB565_2X8_LE},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_RGB565_2X8_LE),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.cycles = 2,
}, {
.fourcc = V4L2_PIX_FMT_RGB24,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_RGB888_1X24,
MEDIA_BUS_FMT_RGB888_2X12_LE
},
),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 24,
}, {
@ -81,12 +83,12 @@ static const struct imx_media_pixfmt pixel_formats[] = {
.bpp = 24,
}, {
.fourcc = V4L2_PIX_FMT_XRGB32,
.codes = {MEDIA_BUS_FMT_ARGB8888_1X32},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_ARGB8888_1X32),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 32,
}, {
.fourcc = V4L2_PIX_FMT_XRGB32,
.codes = {MEDIA_BUS_FMT_ARGB8888_1X32},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_ARGB8888_1X32),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 32,
.ipufmt = true,
@ -106,91 +108,91 @@ static const struct imx_media_pixfmt pixel_formats[] = {
/*** raw bayer and grayscale formats start here ***/
{
.fourcc = V4L2_PIX_FMT_SBGGR8,
.codes = {MEDIA_BUS_FMT_SBGGR8_1X8},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_SBGGR8_1X8),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 8,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SGBRG8,
.codes = {MEDIA_BUS_FMT_SGBRG8_1X8},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_SGBRG8_1X8),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 8,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SGRBG8,
.codes = {MEDIA_BUS_FMT_SGRBG8_1X8},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_SGRBG8_1X8),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 8,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SRGGB8,
.codes = {MEDIA_BUS_FMT_SRGGB8_1X8},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_SRGGB8_1X8),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 8,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SBGGR16,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_SBGGR10_1X10,
MEDIA_BUS_FMT_SBGGR12_1X12,
MEDIA_BUS_FMT_SBGGR14_1X14,
MEDIA_BUS_FMT_SBGGR16_1X16
},
),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SGBRG16,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_SGBRG10_1X10,
MEDIA_BUS_FMT_SGBRG12_1X12,
MEDIA_BUS_FMT_SGBRG14_1X14,
MEDIA_BUS_FMT_SGBRG16_1X16,
},
MEDIA_BUS_FMT_SGBRG16_1X16
),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SGRBG16,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_SGRBG10_1X10,
MEDIA_BUS_FMT_SGRBG12_1X12,
MEDIA_BUS_FMT_SGRBG14_1X14,
MEDIA_BUS_FMT_SGRBG16_1X16,
},
MEDIA_BUS_FMT_SGRBG16_1X16
),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_SRGGB16,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_SRGGB10_1X10,
MEDIA_BUS_FMT_SRGGB12_1X12,
MEDIA_BUS_FMT_SRGGB14_1X14,
MEDIA_BUS_FMT_SRGGB16_1X16,
},
MEDIA_BUS_FMT_SRGGB16_1X16
),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_GREY,
.codes = {
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_Y8_1X8,
MEDIA_BUS_FMT_Y10_1X10,
MEDIA_BUS_FMT_Y12_1X12,
},
MEDIA_BUS_FMT_Y12_1X12
),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 8,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_Y10,
.codes = {MEDIA_BUS_FMT_Y10_1X10},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_Y10_1X10),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.bayer = true,
}, {
.fourcc = V4L2_PIX_FMT_Y12,
.codes = {MEDIA_BUS_FMT_Y12_1X12},
.codes = IMX_BUS_FMTS(MEDIA_BUS_FMT_Y12_1X12),
.cs = IPUV3_COLORSPACE_RGB,
.bpp = 16,
.bayer = true,
@ -220,16 +222,16 @@ static const struct imx_media_pixfmt *find_format(u32 fourcc,
PIXFMT_SEL_YUV : PIXFMT_SEL_RGB);
if (!(fmt_sel & sel) ||
(!allow_non_mbus && !fmt->codes[0]))
(!allow_non_mbus && !fmt->codes))
continue;
if (fourcc && fmt->fourcc == fourcc)
return fmt;
if (!code)
if (!code || !fmt->codes)
continue;
for (j = 0; j < ARRAY_SIZE(fmt->codes) && fmt->codes[j]; j++) {
for (j = 0; fmt->codes[j]; j++) {
if (code == fmt->codes[j])
return fmt;
}
@ -260,7 +262,7 @@ static int enum_format(u32 *fourcc, u32 *code, u32 index,
PIXFMT_SEL_YUV : PIXFMT_SEL_RGB);
if (!(fmt_sel & sel) ||
(!allow_non_mbus && !fmt->codes[0]))
(!allow_non_mbus && !fmt->codes))
continue;
if (fourcc && index == 0) {
@ -273,7 +275,7 @@ static int enum_format(u32 *fourcc, u32 *code, u32 index,
continue;
}
for (j = 0; j < ARRAY_SIZE(fmt->codes) && fmt->codes[j]; j++) {
for (j = 0; fmt->codes[j]; j++) {
if (index == 0) {
*code = fmt->codes[j];
return 0;
@ -532,7 +534,7 @@ int imx_media_ipu_image_to_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
const struct imx_media_pixfmt *fmt;
fmt = imx_media_find_format(image->pix.pixelformat, PIXFMT_SEL_ANY);
if (!fmt)
if (!fmt || !fmt->codes || !fmt->codes[0])
return -EINVAL;
memset(mbus, 0, sizeof(*mbus));

7
drivers/staging/media/imx/imx-media.h
View file

@ -68,8 +68,13 @@ enum {
#define IMX_MEDIA_EOF_TIMEOUT 1000
struct imx_media_pixfmt {
/* the in-memory FourCC pixel format */
u32 fourcc;
u32 codes[4];
/*
* the set of equivalent media bus codes for the fourcc.
* NOTE! codes pointer is NULL for in-memory-only formats.
*/
const u32 *codes;
int bpp; /* total bpp */
/* cycles per pixel for generic (bayer) formats for the parallel bus */
int cycles;