media: venus: venc: configure entropy mode

H264 entropy mode can be selected via V4L2 API but is eventually not
applied. Configure encoder with selected mode, CALVC (def) or CABAC.

Note that hw/firmware also expects a CABAC model configuration which
currently doesn't have existing V4L2 API control. For now, use model_0
which seems always supported and so the default one.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/qcom/venus/venc.c

@@ -641,6 +641,7 @@ static int venc_set_properties(struct venus_inst *inst)
 
 	if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264) {
 		struct hfi_h264_vui_timing_info info;
+		struct hfi_h264_entropy_control entropy;
 
 		ptype = HFI_PROPERTY_PARAM_VENC_H264_VUI_TIMING_INFO;
 		info.enable = 1;
@@ -650,6 +651,16 @@ static int venc_set_properties(struct venus_inst *inst)
 		ret = hfi_session_set_property(inst, ptype, &info);
 		if (ret)
 			return ret;
+
+		ptype = HFI_PROPERTY_PARAM_VENC_H264_ENTROPY_CONTROL;
+		entropy.entropy_mode = venc_v4l2_to_hfi(
+					  V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE,
+					  ctr->h264_entropy_mode);
+		entropy.cabac_model = HFI_H264_CABAC_MODEL_0;
+
+		ret = hfi_session_set_property(inst, ptype, &entropy);
+		if (ret)
+			return ret;
 	}
 
 	/* IDR periodicity, n: