linux-kernel - [PATCH v2 2/4] venus: vdec: Add support for display delay and delay enable controls

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Date:   Fri, 15 Jan 2021 11:26:05 +0200
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>
Subject: [PATCH v2 2/4] venus: vdec: Add support for display delay and delay enable controls

Add support for display delay and display delay enable std controls.
With this we implement decoder decode output order (decode vs display).
Once firmware implement few new features the controls will be used
for other use-cases.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
---
 drivers/media/platform/qcom/venus/core.h       |  2 ++
 drivers/media/platform/qcom/venus/vdec.c       | 10 +++++++++-
 drivers/media/platform/qcom/venus/vdec_ctrls.c | 16 +++++++++++++++-
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index b984d508ed71..1028b492216c 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -172,6 +172,8 @@ struct vdec_controls {
 	u32 post_loop_deb_mode;
 	u32 profile;
 	u32 level;
+	u32 display_delay;
+	u32 display_delay_enable;
 };
 
 struct venc_controls {
diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index e4dc97f00fc3..c20496a14a55 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -620,7 +620,7 @@ static int vdec_set_properties(struct venus_inst *inst)
 {
 	struct vdec_controls *ctr = &inst->controls.dec;
 	struct hfi_enable en = { .enable = 1 };
-	u32 ptype;
+	u32 ptype, decode_order;
 	int ret;
 
 	if (ctr->post_loop_deb_mode) {
@@ -630,6 +630,14 @@ static int vdec_set_properties(struct venus_inst *inst)
 			return ret;
 	}
 
+	if (ctr->display_delay_enable && ctr->display_delay == 0) {
+		ptype = HFI_PROPERTY_PARAM_VDEC_OUTPUT_ORDER;
+		decode_order = HFI_OUTPUT_ORDER_DECODE;
+		ret = hfi_session_set_property(inst, ptype, &decode_order);
+		if (ret)
+			return ret;
+	}
+
 	return 0;
 }
 
diff --git a/drivers/media/platform/qcom/venus/vdec_ctrls.c b/drivers/media/platform/qcom/venus/vdec_ctrls.c
index 974110b75b93..07680aae0a36 100644
--- a/drivers/media/platform/qcom/venus/vdec_ctrls.c
+++ b/drivers/media/platform/qcom/venus/vdec_ctrls.c
@@ -30,6 +30,12 @@ static int vdec_op_s_ctrl(struct v4l2_ctrl *ctrl)
 	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
 		ctr->level = ctrl->val;
 		break;
+	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
+		ctr->display_delay = ctrl->val;
+		break;
+	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:
+		ctr->display_delay_enable = ctrl->val;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -89,7 +95,7 @@ int vdec_ctrl_init(struct venus_inst *inst)
 	struct v4l2_ctrl *ctrl;
 	int ret;
 
-	ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 9);
+	ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 11);
 	if (ret)
 		return ret;
 
@@ -158,6 +164,14 @@ int vdec_ctrl_init(struct venus_inst *inst)
 	if (ctrl)
 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
 
+	v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops,
+			  V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY,
+			  0, 16383, 1, 0);
+
+	v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops,
+			  V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE,
+			  0, 1, 1, 0);
+
 	ret = inst->ctrl_handler.error;
 	if (ret) {
 		v4l2_ctrl_handler_free(&inst->ctrl_handler);
-- 
2.17.1