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media: ov2640: make VIDIOC_SUBDEV_G_FMT ioctl work with V4L2_SUBDEV_FORMAT_TRY 

The VIDIOC_SUBDEV_G_FMT ioctl for this driver doesn't recognize
V4L2_SUBDEV_FORMAT_TRY and always works as if V4L2_SUBDEV_FORMAT_ACTIVE
is specified.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Akinobu Mita 2018-12-09 00:20:32 -05:00 committed by Mauro Carvalho Chehab
parent b0a7d0e1c0
commit 8d3b307a15
1 changed files with 31 additions and 0 deletions
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31
drivers/media/i2c/ov2640.c
View File

@ -926,6 +926,15 @@ static int ov2640_get_fmt(struct v4l2_subdev *sd,
if (format->pad)
return -EINVAL;
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
format->format = *mf;
return 0;
#else
return -ENOTTY;
#endif
}
mf->width = priv->win->width;
mf->height = priv->win->height;
@ -992,6 +1001,27 @@ out:
return ret;
}
static int ov2640_init_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg)
{
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov2640_priv *priv = to_ov2640(client);
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, cfg, 0);
try_fmt->width = priv->win->width;
try_fmt->height = priv->win->height;
try_fmt->code = priv->cfmt_code;
try_fmt->colorspace = V4L2_COLORSPACE_SRGB;
try_fmt->field = V4L2_FIELD_NONE;
try_fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
try_fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
try_fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
#endif
return 0;
}
static int ov2640_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
@ -1101,6 +1131,7 @@ static const struct v4l2_subdev_core_ops ov2640_subdev_core_ops = {
};
static const struct v4l2_subdev_pad_ops ov2640_subdev_pad_ops = {
.init_cfg = ov2640_init_cfg,
.enum_mbus_code = ov2640_enum_mbus_code,
.get_selection = ov2640_get_selection,
.get_fmt = ov2640_get_fmt,