[PATCH v4 2/3] media: iris: force stage 1 work mode for CBR RC on encoder

[Sachin Kumar Garg <sachin.garg@oss.qualcomm.com>]

iris_set_stage() currently always picks STAGE_2 for encoder sessions.
CBR rate control requires stage 1 operation, so force STAGE_1 when
BITRATE_MODE is set to CBR.

The BITRATE_MODE fw_cap value is used instead of inst->hfi_rc_type
since STAGE precedes BITRATE_MODE in enum platform_inst_fw_cap_type,
so iris_set_properties() would still see the previous hfi_rc_type
when iris_set_stage() runs during initial config

Reviewed-by: Vishnu Reddy <busanna.reddy@oss.qualcomm.com>
Signed-off-by: Sachin Kumar Garg <sachin.garg@oss.qualcomm.com>
---
 drivers/media/platform/qcom/iris/iris_ctrls.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_ctrls.c b/drivers/media/platform/qcom/iris/iris_ctrls.c
index 58d195d2ab87..d7cbf6c3614a 100644
--- a/drivers/media/platform/qcom/iris/iris_ctrls.c
+++ b/drivers/media/platform/qcom/iris/iris_ctrls.c
@@ -519,6 +519,9 @@ int iris_set_stage(struct iris_inst *inst, enum platform_inst_fw_cap_type cap_id
 	if (inst->domain == DECODER) {
 		if (iris_res_is_less_than(width, height, 1280, 720))
 			work_mode = STAGE_1;
+	} else if (inst->domain == ENCODER) {
+		if (inst->fw_caps[BITRATE_MODE].value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
+			work_mode = STAGE_1;
 	}
 
 	inst->fw_caps[cap_id].value = work_mode;

-- 
2.34.1