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[media] media: imx: csi: add frame size/interval enumeration
Add frame size and frame interval enumeration to CSI. CSI can downscale the image independently horizontally and vertically by a factor of two, which enumerates to four different frame sizes at the output pads. The input pad supports a range of frame sizes. CSI can also drop frames, resulting in frame rate reduction, so enumerate the resulting possible output frame rates. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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1 changed files with 70 additions and 0 deletions
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@ -1139,6 +1139,74 @@ static int csi_enum_mbus_code(struct v4l2_subdev *sd,
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return ret;
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}
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static int csi_enum_frame_size(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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struct csi_priv *priv = v4l2_get_subdevdata(sd);
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struct v4l2_rect *crop;
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int ret = 0;
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if (fse->pad >= CSI_NUM_PADS ||
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fse->index > (fse->pad == CSI_SINK_PAD ? 0 : 3))
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return -EINVAL;
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mutex_lock(&priv->lock);
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if (fse->pad == CSI_SINK_PAD) {
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fse->min_width = MIN_W;
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fse->max_width = MAX_W;
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fse->min_height = MIN_H;
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fse->max_height = MAX_H;
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} else {
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crop = __csi_get_crop(priv, cfg, fse->which);
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fse->min_width = fse->max_width = fse->index & 1 ?
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crop->width / 2 : crop->width;
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fse->min_height = fse->max_height = fse->index & 2 ?
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crop->height / 2 : crop->height;
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}
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mutex_unlock(&priv->lock);
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return ret;
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}
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static int csi_enum_frame_interval(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_interval_enum *fie)
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{
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struct csi_priv *priv = v4l2_get_subdevdata(sd);
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struct v4l2_fract *input_fi;
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struct v4l2_rect *crop;
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int ret = 0;
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if (fie->pad >= CSI_NUM_PADS ||
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fie->index >= (fie->pad != CSI_SRC_PAD_IDMAC ?
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1 : ARRAY_SIZE(csi_skip)))
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return -EINVAL;
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mutex_lock(&priv->lock);
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input_fi = &priv->frame_interval[CSI_SINK_PAD];
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crop = __csi_get_crop(priv, cfg, fie->which);
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if ((fie->width != crop->width && fie->width != crop->width / 2) ||
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(fie->height != crop->height && fie->height != crop->height / 2)) {
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ret = -EINVAL;
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goto out;
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}
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fie->interval = *input_fi;
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if (fie->pad == CSI_SRC_PAD_IDMAC)
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csi_apply_skip_interval(&csi_skip[fie->index],
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&fie->interval);
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out:
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mutex_unlock(&priv->lock);
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return ret;
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}
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static int csi_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *sdformat)
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@ -1606,6 +1674,8 @@ static const struct v4l2_subdev_video_ops csi_video_ops = {
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static const struct v4l2_subdev_pad_ops csi_pad_ops = {
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.enum_mbus_code = csi_enum_mbus_code,
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.enum_frame_size = csi_enum_frame_size,
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.enum_frame_interval = csi_enum_frame_interval,
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.get_fmt = csi_get_fmt,
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.set_fmt = csi_set_fmt,
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.get_selection = csi_get_selection,
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