diff mbox series

[v2,7/7] media: venus: Set buffer to FW based on FW min count requirement.

Message ID 1625126736-16266-8-git-send-email-dikshita@codeaurora.org (mailing list archive)
State Superseded
Headers show
Series media: venus: Enable venus support on sc7280 | expand

Commit Message

Dikshita Agarwal July 1, 2021, 8:05 a.m. UTC 
- Get the min buffer count required by FW from source event change
  and use the same value to decide actual buffer count and for
  buffer size calculation.
- Setup DPB and OPB buffers after session continue incase of
  reconfig.

Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
---
 drivers/media/platform/qcom/venus/core.h             |  1 +
 drivers/media/platform/qcom/venus/helpers.c          | 11 ++++++++++-
 drivers/media/platform/qcom/venus/hfi_helper.h       |  9 +++++++++
 drivers/media/platform/qcom/venus/hfi_msgs.c         |  7 +++++++
 drivers/media/platform/qcom/venus/hfi_plat_bufs.h    |  2 +-
 drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c | 14 +++++++++-----
 drivers/media/platform/qcom/venus/hfi_platform.h     |  3 ++-
 drivers/media/platform/qcom/venus/vdec.c             | 20 +++++++++++++-------
 8 files changed, 52 insertions(+), 15 deletions(-)

Comments

Stanimir Varbanov July 5, 2021, 9:43 a.m. UTC | #1 
On 7/1/21 11:05 AM, Dikshita Agarwal wrote:
> - Get the min buffer count required by FW from source event change
>   and use the same value to decide actual buffer count and for
>   buffer size calculation.
> - Setup DPB and OPB buffers after session continue incase of
>   reconfig.
> 
> Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
> ---
>  drivers/media/platform/qcom/venus/core.h             |  1 +
>  drivers/media/platform/qcom/venus/helpers.c          | 11 ++++++++++-
>  drivers/media/platform/qcom/venus/hfi_helper.h       |  9 +++++++++
>  drivers/media/platform/qcom/venus/hfi_msgs.c         |  7 +++++++
>  drivers/media/platform/qcom/venus/hfi_plat_bufs.h    |  2 +-
>  drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c | 14 +++++++++-----
>  drivers/media/platform/qcom/venus/hfi_platform.h     |  3 ++-
>  drivers/media/platform/qcom/venus/vdec.c             | 20 +++++++++++++-------
>  8 files changed, 52 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 1ff20d9..b2b023e 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -403,6 +403,7 @@ struct venus_inst {
>  	u32 width;
>  	u32 height;
>  	struct v4l2_rect crop;
> +	u32 fw_min_cnt;
>  	u32 out_width;
>  	u32 out_height;
>  	u32 colorspace;
> diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
> index ccf188a..a7c49ab 100644
> --- a/drivers/media/platform/qcom/venus/helpers.c
> +++ b/drivers/media/platform/qcom/venus/helpers.c
> @@ -576,6 +576,7 @@ static int platform_get_bufreq(struct venus_inst *inst, u32 buftype,
>  	struct hfi_plat_buffers_params params;
>  	bool is_dec = inst->session_type == VIDC_SESSION_TYPE_DEC;
>  	struct venc_controls *enc_ctr = &inst->controls.enc;
> +	int ret = 0;
>  
>  	hfi_plat = hfi_platform_get(version);
>  
> @@ -610,7 +611,15 @@ static int platform_get_bufreq(struct venus_inst *inst, u32 buftype,
>  		params.enc.is_tenbit = inst->bit_depth == VIDC_BITDEPTH_10;
>  	}
>  
> -	return hfi_plat->bufreq(&params, inst->session_type, buftype, req);
> +	if (buftype == HFI_BUFFER_OUTPUT || buftype == HFI_BUFFER_OUTPUT2 ||
> +	    buftype == HFI_BUFFER_INTERNAL_SCRATCH_1(version))
> +		req->count_min = inst->fw_min_cnt;
> +
> +	ret = hfi_plat->bufreq(&params, inst->session_type, buftype, req, inst->num_output_bufs);

I'm confused, inst->num_output_bufs is filled by calling
venus_helper_get_bufreq() which itself is calling hfi_plat->bufreq().
Could you explain the idea?

> +	if (buftype == HFI_BUFFER_OUTPUT || buftype == HFI_BUFFER_OUTPUT2)
> +		if (inst->fw_min_cnt != req->count_min)
> +			inst->fw_min_cnt = req->count_min;
> +	return ret;
>  }
>  
>  int venus_helper_get_bufreq(struct venus_inst *inst, u32 type,
> diff --git a/drivers/media/platform/qcom/venus/hfi_helper.h b/drivers/media/platform/qcom/venus/hfi_helper.h
> index 185c302..f2e8fad 100644
> --- a/drivers/media/platform/qcom/venus/hfi_helper.h
> +++ b/drivers/media/platform/qcom/venus/hfi_helper.h
> @@ -167,6 +167,7 @@
>  #define HFI_PROPERTY_PARAM_VDEC_RECOVERY_POINT_SEI_EXTRADATA	0x120300c
>  #define HFI_PROPERTY_PARAM_VDEC_THUMBNAIL_MODE			0x120300d
>  #define HFI_PROPERTY_PARAM_VDEC_FRAME_ASSEMBLY			0x120300e
> +#define HFI_PROPERTY_PARAM_VDEC_DPB_COUNTS				0x120300e
>  #define HFI_PROPERTY_PARAM_VDEC_VC1_FRAMEDISP_EXTRADATA		0x1203011
>  #define HFI_PROPERTY_PARAM_VDEC_VC1_SEQDISP_EXTRADATA		0x1203012
>  #define HFI_PROPERTY_PARAM_VDEC_TIMESTAMP_EXTRADATA		0x1203013
> @@ -906,6 +907,14 @@ struct hfi_extradata_input_crop {
>  	u32 height;
>  };
>  
> +struct hfi_dpb_counts {
> +	u32 max_dpb_count;
> +	u32 max_ref_frames;
> +	u32 max_dec_buffering;
> +	u32 max_reorder_frames;
> +	u32 fw_min_cnt;
> +};
> +
>  #define HFI_COLOR_FORMAT_MONOCHROME		0x01
>  #define HFI_COLOR_FORMAT_NV12			0x02
>  #define HFI_COLOR_FORMAT_NV21			0x03
> diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c b/drivers/media/platform/qcom/venus/hfi_msgs.c
> index a2d436d..ed005d6 100644
> --- a/drivers/media/platform/qcom/venus/hfi_msgs.c
> +++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
> @@ -32,6 +32,7 @@ static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
>  	struct hfi_colour_space *colour_info;
>  	struct hfi_buffer_requirements *bufreq;
>  	struct hfi_extradata_input_crop *crop;
> +	struct hfi_dpb_counts *dpb_count;
>  	u8 *data_ptr;
>  	u32 ptype;
>  
> @@ -110,6 +111,12 @@ static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
>  			event.input_crop.height = crop->height;
>  			data_ptr += sizeof(*crop);
>  			break;
> +		case HFI_PROPERTY_PARAM_VDEC_DPB_COUNTS:
> +			data_ptr += sizeof(u32);
> +			dpb_count = (struct hfi_dpb_counts *)data_ptr;
> +			event.buf_count = dpb_count->fw_min_cnt;
> +			data_ptr += sizeof(*dpb_count);
> +			break;
>  		default:
>  			break;
>  		}
> diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs.h b/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
> index 52a51a3..f40daa3 100644
> --- a/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
> +++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
> @@ -33,6 +33,6 @@ struct hfi_plat_buffers_params {
>  };
>  
>  int hfi_plat_bufreq_v6(struct hfi_plat_buffers_params *params, u32 session_type,
> -		       u32 buftype, struct hfi_buffer_requirements *bufreq);
> +		       u32 buftype, struct hfi_buffer_requirements *bufreq, u32 num_output_bufs);
>  
>  #endif
> diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
> index 479178b..2d50949 100644
> --- a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
> +++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
> @@ -1164,7 +1164,7 @@ static int output_buffer_count(u32 session_type, u32 codec)
>  			output_min_count = 6;
>  			break;
>  		case V4L2_PIX_FMT_VP9:
> -			output_min_count = 9;
> +			output_min_count = 11;
>  			break;
>  		case V4L2_PIX_FMT_H264:
>  		case V4L2_PIX_FMT_HEVC:
> @@ -1180,7 +1180,7 @@ static int output_buffer_count(u32 session_type, u32 codec)
>  }
>  
>  static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
> -		      struct hfi_buffer_requirements *bufreq)
> +		      struct hfi_buffer_requirements *bufreq, u32 num_output_bufs)
>  {
>  	enum hfi_version version = params->version;
>  	u32 codec = params->codec;
> @@ -1213,6 +1213,10 @@ static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
>  	}
>  
>  	out_min_count = output_buffer_count(VIDC_SESSION_TYPE_DEC, codec);
> +	/* Max of driver and FW count */
> +	out_min_count = max(out_min_count, bufreq->count_min);
> +	/* Max of FW and client count */
> +	out_min_count = max(out_min_count, num_output_bufs);
>  
>  	bufreq->type = buftype;
>  	bufreq->region_size = 0;
> @@ -1237,7 +1241,7 @@ static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
>  	} else if (buftype == HFI_BUFFER_INTERNAL_SCRATCH(version)) {
>  		bufreq->size = dec_ops->scratch(width, height, is_interlaced);
>  	} else if (buftype == HFI_BUFFER_INTERNAL_SCRATCH_1(version)) {
> -		bufreq->size = dec_ops->scratch1(width, height, out_min_count,
> +		bufreq->size = dec_ops->scratch1(width, height, VB2_MAX_FRAME,
>  						 is_secondary_output,
>  						 num_vpp_pipes);
>  	} else if (buftype == HFI_BUFFER_INTERNAL_PERSIST_1) {
> @@ -1318,10 +1322,10 @@ static int bufreq_enc(struct hfi_plat_buffers_params *params, u32 buftype,
>  }
>  
>  int hfi_plat_bufreq_v6(struct hfi_plat_buffers_params *params, u32 session_type,
> -		       u32 buftype, struct hfi_buffer_requirements *bufreq)
> +		       u32 buftype, struct hfi_buffer_requirements *bufreq, u32 num_output_bufs)
>  {
>  	if (session_type == VIDC_SESSION_TYPE_DEC)
> -		return bufreq_dec(params, buftype, bufreq);
> +		return bufreq_dec(params, buftype, bufreq, num_output_bufs);
>  	else
>  		return bufreq_enc(params, buftype, bufreq);
>  }
> diff --git a/drivers/media/platform/qcom/venus/hfi_platform.h b/drivers/media/platform/qcom/venus/hfi_platform.h
> index ef768bf..89fa3bd 100644
> --- a/drivers/media/platform/qcom/venus/hfi_platform.h
> +++ b/drivers/media/platform/qcom/venus/hfi_platform.h
> @@ -51,7 +51,8 @@ struct hfi_platform {
>  	void (*codecs)(u32 *enc_codecs, u32 *dec_codecs, u32 *count);
>  	const struct hfi_plat_caps *(*capabilities)(unsigned int *entries);
>  	int (*bufreq)(struct hfi_plat_buffers_params *params, u32 session_type,
> -		      u32 buftype, struct hfi_buffer_requirements *bufreq);
> +		      u32 buftype, struct hfi_buffer_requirements *bufreq,
> +		      u32 num_output_bufs);
>  };
>  
>  extern const struct hfi_platform hfi_plat_v4;
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index 892be8d..3e91d8c 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -988,23 +988,23 @@ static int vdec_start_capture(struct venus_inst *inst)
>  	if (ret)
>  		goto err;
>  
> +	venus_pm_load_scale(inst);
> +
> +	inst->next_buf_last = false;
> +
>  	ret = venus_helper_alloc_dpb_bufs(inst);
>  	if (ret)
>  		goto err;
>  
> -	ret = venus_helper_queue_dpb_bufs(inst);
> +	ret = hfi_session_continue(inst);
>  	if (ret)
>  		goto free_dpb_bufs;
>  
> -	ret = venus_helper_process_initial_cap_bufs(inst);
> +	ret = venus_helper_queue_dpb_bufs(inst);
>  	if (ret)
>  		goto free_dpb_bufs;
>  
> -	venus_pm_load_scale(inst);
> -
> -	inst->next_buf_last = false;
> -
> -	ret = hfi_session_continue(inst);
> +	ret = venus_helper_process_initial_cap_bufs(inst);
>  	if (ret)
>  		goto free_dpb_bufs;
>  
> @@ -1411,6 +1411,11 @@ static void vdec_event_change(struct venus_inst *inst,
>  		inst->crop.height = ev_data->height;
>  	}
>  
> +	inst->fw_min_cnt = ev_data->buf_count;
> +	//overwriting this to 11 for vp9 due to fw bug
> +	if(inst->hfi_codec == HFI_VIDEO_CODEC_VP9)
> +		inst->fw_min_cnt = 11;
> +
>  	inst->out_width = ev_data->width;
>  	inst->out_height = ev_data->height;
>  
> @@ -1514,6 +1519,7 @@ static void vdec_inst_init(struct venus_inst *inst)
>  	inst->crop.top = 0;
>  	inst->crop.width = inst->width;
>  	inst->crop.height = inst->height;
> +	inst->fw_min_cnt = 8;
>  	inst->out_width = frame_width_min(inst);
>  	inst->out_height = frame_height_min(inst);
>  	inst->fps = 30;
>
diff mbox series

Patch

diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index 1ff20d9..b2b023e 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -403,6 +403,7 @@  struct venus_inst {
 	u32 width;
 	u32 height;
 	struct v4l2_rect crop;
+	u32 fw_min_cnt;
 	u32 out_width;
 	u32 out_height;
 	u32 colorspace;
diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index ccf188a..a7c49ab 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -576,6 +576,7 @@  static int platform_get_bufreq(struct venus_inst *inst, u32 buftype,
 	struct hfi_plat_buffers_params params;
 	bool is_dec = inst->session_type == VIDC_SESSION_TYPE_DEC;
 	struct venc_controls *enc_ctr = &inst->controls.enc;
+	int ret = 0;
 
 	hfi_plat = hfi_platform_get(version);
 
@@ -610,7 +611,15 @@  static int platform_get_bufreq(struct venus_inst *inst, u32 buftype,
 		params.enc.is_tenbit = inst->bit_depth == VIDC_BITDEPTH_10;
 	}
 
-	return hfi_plat->bufreq(&params, inst->session_type, buftype, req);
+	if (buftype == HFI_BUFFER_OUTPUT || buftype == HFI_BUFFER_OUTPUT2 ||
+	    buftype == HFI_BUFFER_INTERNAL_SCRATCH_1(version))
+		req->count_min = inst->fw_min_cnt;
+
+	ret = hfi_plat->bufreq(&params, inst->session_type, buftype, req, inst->num_output_bufs);
+	if (buftype == HFI_BUFFER_OUTPUT || buftype == HFI_BUFFER_OUTPUT2)
+		if (inst->fw_min_cnt != req->count_min)
+			inst->fw_min_cnt = req->count_min;
+	return ret;
 }
 
 int venus_helper_get_bufreq(struct venus_inst *inst, u32 type,
diff --git a/drivers/media/platform/qcom/venus/hfi_helper.h b/drivers/media/platform/qcom/venus/hfi_helper.h
index 185c302..f2e8fad 100644
--- a/drivers/media/platform/qcom/venus/hfi_helper.h
+++ b/drivers/media/platform/qcom/venus/hfi_helper.h
@@ -167,6 +167,7 @@ 
 #define HFI_PROPERTY_PARAM_VDEC_RECOVERY_POINT_SEI_EXTRADATA	0x120300c
 #define HFI_PROPERTY_PARAM_VDEC_THUMBNAIL_MODE			0x120300d
 #define HFI_PROPERTY_PARAM_VDEC_FRAME_ASSEMBLY			0x120300e
+#define HFI_PROPERTY_PARAM_VDEC_DPB_COUNTS				0x120300e
 #define HFI_PROPERTY_PARAM_VDEC_VC1_FRAMEDISP_EXTRADATA		0x1203011
 #define HFI_PROPERTY_PARAM_VDEC_VC1_SEQDISP_EXTRADATA		0x1203012
 #define HFI_PROPERTY_PARAM_VDEC_TIMESTAMP_EXTRADATA		0x1203013
@@ -906,6 +907,14 @@  struct hfi_extradata_input_crop {
 	u32 height;
 };
 
+struct hfi_dpb_counts {
+	u32 max_dpb_count;
+	u32 max_ref_frames;
+	u32 max_dec_buffering;
+	u32 max_reorder_frames;
+	u32 fw_min_cnt;
+};
+
 #define HFI_COLOR_FORMAT_MONOCHROME		0x01
 #define HFI_COLOR_FORMAT_NV12			0x02
 #define HFI_COLOR_FORMAT_NV21			0x03
diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c b/drivers/media/platform/qcom/venus/hfi_msgs.c
index a2d436d..ed005d6 100644
--- a/drivers/media/platform/qcom/venus/hfi_msgs.c
+++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
@@ -32,6 +32,7 @@  static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
 	struct hfi_colour_space *colour_info;
 	struct hfi_buffer_requirements *bufreq;
 	struct hfi_extradata_input_crop *crop;
+	struct hfi_dpb_counts *dpb_count;
 	u8 *data_ptr;
 	u32 ptype;
 
@@ -110,6 +111,12 @@  static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
 			event.input_crop.height = crop->height;
 			data_ptr += sizeof(*crop);
 			break;
+		case HFI_PROPERTY_PARAM_VDEC_DPB_COUNTS:
+			data_ptr += sizeof(u32);
+			dpb_count = (struct hfi_dpb_counts *)data_ptr;
+			event.buf_count = dpb_count->fw_min_cnt;
+			data_ptr += sizeof(*dpb_count);
+			break;
 		default:
 			break;
 		}
diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs.h b/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
index 52a51a3..f40daa3 100644
--- a/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
+++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
@@ -33,6 +33,6 @@  struct hfi_plat_buffers_params {
 };
 
 int hfi_plat_bufreq_v6(struct hfi_plat_buffers_params *params, u32 session_type,
-		       u32 buftype, struct hfi_buffer_requirements *bufreq);
+		       u32 buftype, struct hfi_buffer_requirements *bufreq, u32 num_output_bufs);
 
 #endif
diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
index 479178b..2d50949 100644
--- a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
+++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
@@ -1164,7 +1164,7 @@  static int output_buffer_count(u32 session_type, u32 codec)
 			output_min_count = 6;
 			break;
 		case V4L2_PIX_FMT_VP9:
-			output_min_count = 9;
+			output_min_count = 11;
 			break;
 		case V4L2_PIX_FMT_H264:
 		case V4L2_PIX_FMT_HEVC:
@@ -1180,7 +1180,7 @@  static int output_buffer_count(u32 session_type, u32 codec)
 }
 
 static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
-		      struct hfi_buffer_requirements *bufreq)
+		      struct hfi_buffer_requirements *bufreq, u32 num_output_bufs)
 {
 	enum hfi_version version = params->version;
 	u32 codec = params->codec;
@@ -1213,6 +1213,10 @@  static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
 	}
 
 	out_min_count = output_buffer_count(VIDC_SESSION_TYPE_DEC, codec);
+	/* Max of driver and FW count */
+	out_min_count = max(out_min_count, bufreq->count_min);
+	/* Max of FW and client count */
+	out_min_count = max(out_min_count, num_output_bufs);
 
 	bufreq->type = buftype;
 	bufreq->region_size = 0;
@@ -1237,7 +1241,7 @@  static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
 	} else if (buftype == HFI_BUFFER_INTERNAL_SCRATCH(version)) {
 		bufreq->size = dec_ops->scratch(width, height, is_interlaced);
 	} else if (buftype == HFI_BUFFER_INTERNAL_SCRATCH_1(version)) {
-		bufreq->size = dec_ops->scratch1(width, height, out_min_count,
+		bufreq->size = dec_ops->scratch1(width, height, VB2_MAX_FRAME,
 						 is_secondary_output,
 						 num_vpp_pipes);
 	} else if (buftype == HFI_BUFFER_INTERNAL_PERSIST_1) {
@@ -1318,10 +1322,10 @@  static int bufreq_enc(struct hfi_plat_buffers_params *params, u32 buftype,
 }
 
 int hfi_plat_bufreq_v6(struct hfi_plat_buffers_params *params, u32 session_type,
-		       u32 buftype, struct hfi_buffer_requirements *bufreq)
+		       u32 buftype, struct hfi_buffer_requirements *bufreq, u32 num_output_bufs)
 {
 	if (session_type == VIDC_SESSION_TYPE_DEC)
-		return bufreq_dec(params, buftype, bufreq);
+		return bufreq_dec(params, buftype, bufreq, num_output_bufs);
 	else
 		return bufreq_enc(params, buftype, bufreq);
 }
diff --git a/drivers/media/platform/qcom/venus/hfi_platform.h b/drivers/media/platform/qcom/venus/hfi_platform.h
index ef768bf..89fa3bd 100644
--- a/drivers/media/platform/qcom/venus/hfi_platform.h
+++ b/drivers/media/platform/qcom/venus/hfi_platform.h
@@ -51,7 +51,8 @@  struct hfi_platform {
 	void (*codecs)(u32 *enc_codecs, u32 *dec_codecs, u32 *count);
 	const struct hfi_plat_caps *(*capabilities)(unsigned int *entries);
 	int (*bufreq)(struct hfi_plat_buffers_params *params, u32 session_type,
-		      u32 buftype, struct hfi_buffer_requirements *bufreq);
+		      u32 buftype, struct hfi_buffer_requirements *bufreq,
+		      u32 num_output_bufs);
 };
 
 extern const struct hfi_platform hfi_plat_v4;
diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 892be8d..3e91d8c 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -988,23 +988,23 @@  static int vdec_start_capture(struct venus_inst *inst)
 	if (ret)
 		goto err;
 
+	venus_pm_load_scale(inst);
+
+	inst->next_buf_last = false;
+
 	ret = venus_helper_alloc_dpb_bufs(inst);
 	if (ret)
 		goto err;
 
-	ret = venus_helper_queue_dpb_bufs(inst);
+	ret = hfi_session_continue(inst);
 	if (ret)
 		goto free_dpb_bufs;
 
-	ret = venus_helper_process_initial_cap_bufs(inst);
+	ret = venus_helper_queue_dpb_bufs(inst);
 	if (ret)
 		goto free_dpb_bufs;
 
-	venus_pm_load_scale(inst);
-
-	inst->next_buf_last = false;
-
-	ret = hfi_session_continue(inst);
+	ret = venus_helper_process_initial_cap_bufs(inst);
 	if (ret)
 		goto free_dpb_bufs;
 
@@ -1411,6 +1411,11 @@  static void vdec_event_change(struct venus_inst *inst,
 		inst->crop.height = ev_data->height;
 	}
 
+	inst->fw_min_cnt = ev_data->buf_count;
+	//overwriting this to 11 for vp9 due to fw bug
+	if(inst->hfi_codec == HFI_VIDEO_CODEC_VP9)
+		inst->fw_min_cnt = 11;
+
 	inst->out_width = ev_data->width;
 	inst->out_height = ev_data->height;
 
@@ -1514,6 +1519,7 @@  static void vdec_inst_init(struct venus_inst *inst)
 	inst->crop.top = 0;
 	inst->crop.width = inst->width;
 	inst->crop.height = inst->height;
+	inst->fw_min_cnt = 8;
 	inst->out_width = frame_width_min(inst);
 	inst->out_height = frame_height_min(inst);
 	inst->fps = 30;