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Commit efe1958e authored by Philipp Zabel's avatar Philipp Zabel Committed by Mauro Carvalho Chehab
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media: video-mux: fix compliance failures 

Limit frame sizes to the [1, 65536] interval, media bus formats to
the available list of formats, and initialize pad and try formats.
Reported-by: default avatarRui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: default avatarRui Miguel Silva <rui.silva@linaro.org>
Acked-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 56ab8cdb
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Inline Side-by-side
Showing with 115 additions and 4 deletions
drivers/media/platform/video-mux.c
View file @ efe1958e
......@@ -34,6 +34,13 @@ struct video_mux {
int active;
};
static const struct v4l2_mbus_framefmt video_mux_format_mbus_default = {
.width = 1,
.height = 1,
.code = MEDIA_BUS_FMT_Y8_1X8,
.field = V4L2_FIELD_NONE,
};
static inline struct video_mux *v4l2_subdev_to_video_mux(struct v4l2_subdev *sd)
{
return container_of(sd, struct video_mux, subdev);
......@@ -180,6 +187,88 @@ static int video_mux_set_format(struct v4l2_subdev *sd,
if (!source_mbusformat)
return -EINVAL;
/* No size limitations except V4L2 compliance requirements */
v4l_bound_align_image(&sdformat->format.width, 1, 65536, 0,
&sdformat->format.height, 1, 65536, 0, 0);
/* All formats except LVDS and vendor specific formats are acceptable */
switch (sdformat->format.code) {
case MEDIA_BUS_FMT_RGB444_1X12:
case MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE:
case MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE:
case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE:
case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
case MEDIA_BUS_FMT_RGB565_1X16:
case MEDIA_BUS_FMT_BGR565_2X8_BE:
case MEDIA_BUS_FMT_BGR565_2X8_LE:
case MEDIA_BUS_FMT_RGB565_2X8_BE:
case MEDIA_BUS_FMT_RGB565_2X8_LE:
case MEDIA_BUS_FMT_RGB666_1X18:
case MEDIA_BUS_FMT_RBG888_1X24:
case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
case MEDIA_BUS_FMT_BGR888_1X24:
case MEDIA_BUS_FMT_GBR888_1X24:
case MEDIA_BUS_FMT_RGB888_1X24:
case MEDIA_BUS_FMT_RGB888_2X12_BE:
case MEDIA_BUS_FMT_RGB888_2X12_LE:
case MEDIA_BUS_FMT_ARGB8888_1X32:
case MEDIA_BUS_FMT_RGB888_1X32_PADHI:
case MEDIA_BUS_FMT_RGB101010_1X30:
case MEDIA_BUS_FMT_RGB121212_1X36:
case MEDIA_BUS_FMT_RGB161616_1X48:
case MEDIA_BUS_FMT_Y8_1X8:
case MEDIA_BUS_FMT_UV8_1X8:
case MEDIA_BUS_FMT_UYVY8_1_5X8:
case MEDIA_BUS_FMT_VYUY8_1_5X8:
case MEDIA_BUS_FMT_YUYV8_1_5X8:
case MEDIA_BUS_FMT_YVYU8_1_5X8:
case MEDIA_BUS_FMT_UYVY8_2X8:
case MEDIA_BUS_FMT_VYUY8_2X8:
case MEDIA_BUS_FMT_YUYV8_2X8:
case MEDIA_BUS_FMT_YVYU8_2X8:
case MEDIA_BUS_FMT_Y10_1X10:
case MEDIA_BUS_FMT_UYVY10_2X10:
case MEDIA_BUS_FMT_VYUY10_2X10:
case MEDIA_BUS_FMT_YUYV10_2X10:
case MEDIA_BUS_FMT_YVYU10_2X10:
case MEDIA_BUS_FMT_Y12_1X12:
case MEDIA_BUS_FMT_UYVY12_2X12:
case MEDIA_BUS_FMT_VYUY12_2X12:
case MEDIA_BUS_FMT_YUYV12_2X12:
case MEDIA_BUS_FMT_YVYU12_2X12:
case MEDIA_BUS_FMT_UYVY8_1X16:
case MEDIA_BUS_FMT_VYUY8_1X16:
case MEDIA_BUS_FMT_YUYV8_1X16:
case MEDIA_BUS_FMT_YVYU8_1X16:
case MEDIA_BUS_FMT_YDYUYDYV8_1X16:
case MEDIA_BUS_FMT_UYVY10_1X20:
case MEDIA_BUS_FMT_VYUY10_1X20:
case MEDIA_BUS_FMT_YUYV10_1X20:
case MEDIA_BUS_FMT_YVYU10_1X20:
case MEDIA_BUS_FMT_VUY8_1X24:
case MEDIA_BUS_FMT_YUV8_1X24:
case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
case MEDIA_BUS_FMT_UYVY12_1X24:
case MEDIA_BUS_FMT_VYUY12_1X24:
case MEDIA_BUS_FMT_YUYV12_1X24:
case MEDIA_BUS_FMT_YVYU12_1X24:
case MEDIA_BUS_FMT_YUV10_1X30:
case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
case MEDIA_BUS_FMT_AYUV8_1X32:
case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
case MEDIA_BUS_FMT_YUV12_1X36:
case MEDIA_BUS_FMT_YUV16_1X48:
case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
case MEDIA_BUS_FMT_JPEG_1X8:
case MEDIA_BUS_FMT_AHSV8888_1X32:
break;
default:
sdformat->format.code = MEDIA_BUS_FMT_Y8_1X8;
break;
}
if (sdformat->format.field == V4L2_FIELD_ANY)
sdformat->format.field = V4L2_FIELD_NONE;
mutex_lock(&vmux->lock);
/* Source pad mirrors active sink pad, no limitations on sink pads */
......@@ -197,7 +286,27 @@ static int video_mux_set_format(struct v4l2_subdev *sd,
return 0;
}
static int video_mux_init_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg)
{
struct video_mux *vmux = v4l2_subdev_to_video_mux(sd);
struct v4l2_mbus_framefmt *mbusformat;
unsigned int i;
mutex_lock(&vmux->lock);
for (i = 0; i < sd->entity.num_pads; i++) {
mbusformat = v4l2_subdev_get_try_format(sd, cfg, i);
*mbusformat = video_mux_format_mbus_default;
}
mutex_unlock(&vmux->lock);
return 0;
}
static const struct v4l2_subdev_pad_ops video_mux_pad_ops = {
.init_cfg = video_mux_init_cfg,
.get_fmt = video_mux_get_format,
.set_fmt = video_mux_set_format,
};
......@@ -214,8 +323,8 @@ static int video_mux_probe(struct platform_device *pdev)
struct device_node *ep;
struct video_mux *vmux;
unsigned int num_pads = 0;
unsigned int i;
int ret;
int i;
vmux = devm_kzalloc(dev, sizeof(*vmux), GFP_KERNEL);
if (!vmux)
......@@ -260,9 +369,11 @@ static int video_mux_probe(struct platform_device *pdev)
sizeof(*vmux->format_mbus),
GFP_KERNEL);
for (i = 0; i < num_pads - 1; i++)
vmux->pads[i].flags = MEDIA_PAD_FL_SINK;
vmux->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
for (i = 0; i < num_pads; i++) {
vmux->pads[i].flags = (i < num_pads - 1) ? MEDIA_PAD_FL_SINK
: MEDIA_PAD_FL_SOURCE;
vmux->format_mbus[i] = video_mux_format_mbus_default;
}
vmux->subdev.entity.function = MEDIA_ENT_F_VID_MUX;
ret = media_entity_pads_init(&vmux->subdev.entity, num_pads,
......
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