Add frame size enumeration operation. The PRP ENC/VF subdevices
are scalers, so they can output a continuous range of widths/
heights on their source pads.
Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
---
drivers/staging/media/imx/imx-ic-prpencvf.c | 40 +++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index 4123b03..860b406 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
@@ -875,6 +875,45 @@ static int prp_set_fmt(struct v4l2_subdev *sd,
return ret;
}
+static int prp_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ struct v4l2_subdev_format format = {0};
+ const struct imx_media_pixfmt *cc;
+ int ret = 0;
+
+ if (fse->pad >= PRPENCVF_NUM_PADS || fse->index != 0)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+
+ format.pad = fse->pad;
+ format.which = fse->which;
+ format.format.code = fse->code;
+ format.format.width = 1;
+ format.format.height = 1;
+ prp_try_fmt(priv, cfg, &format, &cc);
+ fse->min_width = format.format.width;
+ fse->min_height = format.format.height;
+
+ if (format.format.code != fse->code) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ format.format.code = fse->code;
+ format.format.width = -1;
+ format.format.height = -1;
+ prp_try_fmt(priv, cfg, &format, &cc);
+ fse->max_width = format.format.width;
+ fse->max_height = format.format.height;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
static int prp_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
@@ -1125,6 +1164,7 @@ static void prp_unregistered(struct v4l2_subdev *sd)
static struct v4l2_subdev_pad_ops prp_pad_ops = {
.enum_mbus_code = prp_enum_mbus_code,
+ .enum_frame_size = prp_enum_frame_size,
.get_fmt = prp_get_fmt,
.set_fmt = prp_set_fmt,
.link_validate = prp_link_validate,
--
2.7.4
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