[PATCH 3/4] media: i2c: max9286: Do not allow changing format

[Jacopo Mondi <jacopo+renesas@jmondi.org>]

As the MAX9286 chip does not allow changing the format of the video
stream, always return the format retrieived from the remote subdevices
when an attempt to change it is made.

The -max9286_get_pad_format() format is now unsued, so remove it.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 drivers/media/i2c/max9286.c | 58 +++++++------------------------------
 1 file changed, 10 insertions(+), 48 deletions(-)

diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
index e6a70dbd27df..a4e23396c4b6 100644
--- a/drivers/media/i2c/max9286.c
+++ b/drivers/media/i2c/max9286.c
@@ -689,54 +689,6 @@ static int max9286_enum_mbus_code(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static struct v4l2_mbus_framefmt *
-max9286_get_pad_format(struct max9286_priv *priv,
-		       struct v4l2_subdev_pad_config *cfg,
-		       unsigned int pad, u32 which)
-{
-	switch (which) {
-	case V4L2_SUBDEV_FORMAT_TRY:
-		return v4l2_subdev_get_try_format(&priv->sd, cfg, pad);
-	case V4L2_SUBDEV_FORMAT_ACTIVE:
-		return &priv->fmt[pad];
-	default:
-		return NULL;
-	}
-}
-
-static int max9286_set_fmt(struct v4l2_subdev *sd,
-			   struct v4l2_subdev_pad_config *cfg,
-			   struct v4l2_subdev_format *format)
-{
-	struct max9286_priv *priv = sd_to_max9286(sd);
-	struct v4l2_mbus_framefmt *cfg_fmt;
-
-	if (format->pad == MAX9286_SRC_PAD)
-		return -EINVAL;
-
-	/* Refuse non YUV422 formats as we hardcode DT to 8 bit YUV422 */
-	switch (format->format.code) {
-	case MEDIA_BUS_FMT_UYVY8_1X16:
-	case MEDIA_BUS_FMT_VYUY8_1X16:
-	case MEDIA_BUS_FMT_YUYV8_1X16:
-	case MEDIA_BUS_FMT_YVYU8_1X16:
-		break;
-	default:
-		format->format.code = MEDIA_BUS_FMT_UYVY8_1X16;
-		break;
-	}
-
-	cfg_fmt = max9286_get_pad_format(priv, cfg, format->pad, format->which);
-	if (!cfg_fmt)
-		return -EINVAL;
-
-	mutex_lock(&priv->mutex);
-	*cfg_fmt = format->format;
-	mutex_unlock(&priv->mutex);
-
-	return 0;
-}
-
 static int max9286_get_fmt(struct v4l2_subdev *sd,
 			   struct v4l2_subdev_pad_config *cfg,
 			   struct v4l2_subdev_format *format)
@@ -781,6 +733,16 @@ static int max9286_get_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
+static int max9286_set_fmt(struct v4l2_subdev *sd,
+			   struct v4l2_subdev_pad_config *cfg,
+			   struct v4l2_subdev_format *format)
+{
+	if (format->pad == MAX9286_SRC_PAD)
+		return -EINVAL;
+
+	return max9286_get_fmt(sd, cfg, format);
+}
+
 static const struct v4l2_subdev_video_ops max9286_video_ops = {
 	.s_stream	= max9286_s_stream,
 };
-- 
2.27.0