video: driver: Add support to enable enc ring buffer

Add support to enable ring buffer for enc intermediate
bin buffer to improve encoding performance.

Change-Id: Ifbf50cb48278c62c09a20bc7626a3b6288813830
Signed-off-by: Akshata Sahukar <quic_asahukar@quicinc.com>

driver/vidc/inc/msm_vidc_inst.h

@@ -28,6 +28,7 @@ struct msm_vidc_session_ops {
 	int (*buffer_size)(struct msm_vidc_inst *inst, enum msm_vidc_buffer_type type);
 	int (*min_count)(struct msm_vidc_inst *inst, enum msm_vidc_buffer_type type);
 	int (*extra_count)(struct msm_vidc_inst *inst, enum msm_vidc_buffer_type type);
+	int (*ring_buf_count)(struct msm_vidc_inst *inst, u32 data_size);
 };
 
 struct msm_vidc_mem_list_info {

driver/vidc/inc/msm_vidc_internal.h

@@ -101,6 +101,7 @@ enum msm_vidc_metadata_bits {
 #define MAX_ENCODING_REFERNCE_FRAMES          7
 #define MAX_LTR_FRAME_COUNT_5                 5
 #define MAX_LTR_FRAME_COUNT_2                 2
+#define MAX_ENC_RING_BUF_COUNT                5 /* to be tuned */
 
 #define DCVS_WINDOW 16
 #define ENC_FPS_WINDOW 3
@@ -288,6 +289,7 @@ enum msm_vidc_metadata_bits {
 	CAP(MB_CYCLES_LP)                         \
 	CAP(MB_CYCLES_FW)                         \
 	CAP(MB_CYCLES_FW_VPP)                     \
+	CAP(ENC_RING_BUFFER_COUNT)                \
 	CAP(CLIENT_ID)                            \
 	CAP(SECURE_MODE)                          \
 	CAP(FENCE_ID)                             \

driver/vidc/src/msm_venc.c

@@ -456,6 +456,29 @@ static int msm_venc_set_quality_mode(struct msm_vidc_inst *inst)
 	return 0;
 }
 
+static int msm_venc_set_ring_buffer_count(struct msm_vidc_inst *inst)
+{
+	int rc = 0;
+	struct msm_vidc_inst_cap *cap;
+
+	if (!inst->capabilities) {
+		i_vpr_e(inst, "%s: invalid params\n", __func__);
+		return -EINVAL;
+	}
+	cap = &inst->capabilities->cap[ENC_RING_BUFFER_COUNT];
+
+	if (!cap->set)
+		return 0;
+
+	rc = cap->set(inst, ENC_RING_BUFFER_COUNT);
+	if (rc) {
+		i_vpr_e(inst, "%s: set cap failed\n", __func__);
+		return rc;
+	}
+
+	return 0;
+}
+
 static int msm_venc_set_input_properties(struct msm_vidc_inst *inst)
 {
 	int i, j, rc = 0;
@@ -544,6 +567,10 @@ static int msm_venc_set_internal_properties(struct msm_vidc_inst *inst)
 	if (rc)
 		return rc;
 
+	rc = msm_venc_set_ring_buffer_count(inst);
+	if (rc)
+		return rc;
+
 	return rc;
 }
 
@@ -1006,6 +1033,10 @@ int msm_venc_streamon_output(struct msm_vidc_inst *inst)
 	if (rc)
 		goto error;
 
+	rc = msm_venc_set_internal_properties(inst);
+	if (rc)
+		goto error;
+
 	rc = msm_venc_get_output_internal_buffers(inst);
 	if (rc)
 		goto error;
@@ -1018,10 +1049,6 @@ int msm_venc_streamon_output(struct msm_vidc_inst *inst)
 	if (rc)
 		goto error;
 
-	rc = msm_venc_set_internal_properties(inst);
-	if (rc)
-		goto error;
-
 	rc = msm_venc_property_subscription(inst, OUTPUT_PORT);
 	if (rc)
 		goto error;