media: mtk-vcodec: venc: support ENUM_FRAMESIZES on OUTPUT formats

v4l2-compliance requires ENUM_FRAMESIZES to support OUTPUT formats.
Reuse mtk_venc_find_format() to make sure both queues are considered
when serving an ENUM_FRAMESIZES.

[hverkuil: fixed some checkpatch alignment warnings]
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Acked-by: Tiffany Lin <tiffany.lin@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c

@@ -123,28 +123,44 @@ static int vidioc_enum_fmt(struct v4l2_fmtdesc *f,
 	return 0;
 }
 
+static const struct mtk_video_fmt *
+mtk_venc_find_format(u32 fourcc, const struct mtk_vcodec_enc_pdata *pdata)
+{
+	const struct mtk_video_fmt *fmt;
+	unsigned int k;
+
+	for (k = 0; k < pdata->num_capture_formats; k++) {
+		fmt = &pdata->capture_formats[k];
+		if (fmt->fourcc == fourcc)
+			return fmt;
+	}
+
+	for (k = 0; k < pdata->num_output_formats; k++) {
+		fmt = &pdata->output_formats[k];
+		if (fmt->fourcc == fourcc)
+			return fmt;
+	}
+
+	return NULL;
+}
+
 static int vidioc_enum_framesizes(struct file *file, void *fh,
 				  struct v4l2_frmsizeenum *fsize)
 {
-	const struct mtk_vcodec_enc_pdata *pdata =
-		fh_to_ctx(fh)->dev->venc_pdata;
-	int i = 0;
+	const struct mtk_video_fmt *fmt;
 
 	if (fsize->index != 0)
 		return -EINVAL;
 
-	for (i = 0; i < pdata->num_capture_formats; ++i) {
-		const struct mtk_video_fmt *fmt = &pdata->capture_formats[i];
+	fmt = mtk_venc_find_format(fsize->pixel_format,
+				   fh_to_ctx(fh)->dev->venc_pdata);
+	if (!fmt)
+		return -EINVAL;
 
-		if (fsize->pixel_format != fmt->fourcc)
-			continue;
+	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+	fsize->stepwise = mtk_venc_framesizes;
 
-		fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
-		fsize->stepwise = mtk_venc_framesizes;
-		return 0;
-	}
-
-	return -EINVAL;
+	return 0;
 }
 
 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
@@ -222,27 +238,6 @@ static struct mtk_q_data *mtk_venc_get_q_data(struct mtk_vcodec_ctx *ctx,
 	return &ctx->q_data[MTK_Q_DATA_DST];
 }
 
-static const struct mtk_video_fmt *
-mtk_venc_find_format(struct v4l2_format *f, const struct mtk_vcodec_enc_pdata *pdata)
-{
-	const struct mtk_video_fmt *fmt;
-	unsigned int k;
-
-	for (k = 0; k < pdata->num_capture_formats; k++) {
-		fmt = &pdata->capture_formats[k];
-		if (fmt->fourcc == f->fmt.pix.pixelformat)
-			return fmt;
-	}
-
-	for (k = 0; k < pdata->num_output_formats; k++) {
-		fmt = &pdata->output_formats[k];
-		if (fmt->fourcc == f->fmt.pix.pixelformat)
-			return fmt;
-	}
-
-	return NULL;
-}
-
 /* V4L2 specification suggests the driver corrects the format struct if any of
  * the dimensions is unsupported
  */
@@ -403,7 +398,7 @@ static int vidioc_venc_s_fmt_cap(struct file *file, void *priv,
 		return -EINVAL;
 	}
 
-	fmt = mtk_venc_find_format(f, pdata);
+	fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
 	if (!fmt) {
 		fmt = &ctx->dev->venc_pdata->capture_formats[0];
 		f->fmt.pix.pixelformat = fmt->fourcc;
@@ -467,7 +462,7 @@ static int vidioc_venc_s_fmt_out(struct file *file, void *priv,
 		return -EINVAL;
 	}
 
-	fmt = mtk_venc_find_format(f, pdata);
+	fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
 	if (!fmt) {
 		fmt = &ctx->dev->venc_pdata->output_formats[0];
 		f->fmt.pix.pixelformat = fmt->fourcc;
@@ -550,7 +545,7 @@ static int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
 	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
 	const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;
 
-	fmt = mtk_venc_find_format(f, pdata);
+	fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
 	if (!fmt) {
 		fmt = &ctx->dev->venc_pdata->capture_formats[0];
 		f->fmt.pix.pixelformat = fmt->fourcc;
@@ -570,7 +565,7 @@ static int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
 	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
 	const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;
 
-	fmt = mtk_venc_find_format(f, pdata);
+	fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
 	if (!fmt) {
 		fmt = &ctx->dev->venc_pdata->output_formats[0];
 		f->fmt.pix.pixelformat = fmt->fourcc;