media: mtk-vcodec: venc: set default time per frame

The time per frame was left initialized to 0/0, which make the driver
fail v4l2-compliance, and also leaves it potentially exposed to doing a
division by zero.

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

@@ -24,6 +24,9 @@
 #define DFT_CFG_HEIGHT	MTK_VENC_MIN_H
 #define MTK_MAX_CTRLS_HINT	20
 
+#define MTK_DEFAULT_FRAMERATE_NUM 1001
+#define MTK_DEFAULT_FRAMERATE_DENOM 30000
+
 static void mtk_venc_worker(struct work_struct *work);
 
 static const struct v4l2_frmsize_stepwise mtk_venc_framesizes = {
@@ -1197,6 +1200,8 @@ void mtk_vcodec_enc_set_default_params(struct mtk_vcodec_ctx *ctx)
 		DFT_CFG_WIDTH * DFT_CFG_HEIGHT;
 	ctx->q_data[MTK_Q_DATA_DST].bytesperline[0] = 0;
 
+	ctx->enc_params.framerate_num = MTK_DEFAULT_FRAMERATE_NUM;
+	ctx->enc_params.framerate_denom = MTK_DEFAULT_FRAMERATE_DENOM;
 }
 
 int mtk_vcodec_enc_ctrls_setup(struct mtk_vcodec_ctx *ctx)