[PATCH v2, 0/7] support mt8195 decoder

[PATCH v2, 0/7] support mt8195 decoder

[Yunfei Dong]

Firstly, add mt8195 soc lat hardware and compatible, then add documents.
For vp8 only support MM21 mode, H264/vp9 support MT21C, need to separate
them. Lastly, enable H264 inner racing mode to reduce hardware latency.

Patch 1~4 add mt8195 soc lat hardware and compatible, then add documents.
Patch 5 using different format for different codecs.
Patch 6 prevent kernel crash when scp reboot.
Patch 7 enable H264 inner racing mode to reduce hardware latency.
---
This patch depends on "support mt8186 decoder"[1]

[1]  https://patchwork.kernel.org/project/linux-mediatek/cover/20220122075606.19373-1-yunfei.dong@mediatek.com
---
changed with v1:
- separate "Init VP9 stateless decode params" patch and remove it to another one.
- add reviewed-by in patch v3/v4/v6
---
Tinghan Shen (1):
  media: mtk-vcodec: prevent kernel crash when scp ipi timeout

Yunfei Dong (6):
  dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for lat soc
  media: mtk-vcodec: Add to support lat soc hardware
  dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for mt8195
  media: mtk-vcodec: Adds compatible for mt8195
  media: mtk-vcodec: Different codec using different capture format
  media: mtk-vcodec: Add to support H264 inner racing mode

 .../media/mediatek,vcodec-subdev-decoder.yaml | 50 +++++++++++++++++++
 .../platform/mtk-vcodec/mtk_vcodec_dec.c      | 41 +++++++++++++++
 .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  |  8 +++
 .../platform/mtk-vcodec/mtk_vcodec_dec_hw.c   | 12 +++--
 .../platform/mtk-vcodec/mtk_vcodec_dec_hw.h   |  2 +
 .../platform/mtk-vcodec/mtk_vcodec_dec_pm.c   | 50 +++++++++++++++++++
 .../platform/mtk-vcodec/mtk_vcodec_drv.h      | 11 ++++
 .../mtk-vcodec/vdec/vdec_h264_req_multi_if.c  | 23 +++++++--
 .../media/platform/mtk-vcodec/vdec_vpu_if.c   |  5 ++
 9 files changed, 194 insertions(+), 8 deletions(-)

-- 
2.25.1

[PATCH v2, 1/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for lat soc

[Yunfei Dong]

Adds decoder dt-bindings for compatible "mediatek,mtk-vcodec-lat-soc".

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 .../media/mediatek,vcodec-subdev-decoder.yaml | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
index 6415c9f29130..a3c892338ac0 100644
--- a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
+++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
@@ -189,6 +189,55 @@ patternProperties:
 
     additionalProperties: false
 
+  '^vcodec-lat-soc@[0-9a-f]+$':
+    type: object
+
+    properties:
+      compatible:
+        const: mediatek,mtk-vcodec-lat-soc
+
+      reg:
+        maxItems: 1
+
+      iommus:
+        minItems: 1
+        maxItems: 32
+        description: |
+          List of the hardware port in respective IOMMU block for current Socs.
+          Refer to bindings/iommu/mediatek,iommu.yaml.
+
+      clocks:
+        maxItems: 5
+
+      clock-names:
+        items:
+          - const: sel
+          - const: soc-vdec
+          - const: soc-lat
+          - const: vdec
+          - const: top
+
+      assigned-clocks:
+        maxItems: 1
+
+      assigned-clock-parents:
+        maxItems: 1
+
+      power-domains:
+        maxItems: 1
+
+    required:
+      - compatible
+      - reg
+      - iommus
+      - clocks
+      - clock-names
+      - assigned-clocks
+      - assigned-clock-parents
+      - power-domains
+
+    additionalProperties: false
+
 required:
   - compatible
   - reg
-- 
2.25.1

[PATCH v2, 2/7] media: mtk-vcodec: Add to support lat soc hardware

[Yunfei Dong]

Add lat soc compatible and to support lat soc power/clk helper.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 .../platform/mtk-vcodec/mtk_vcodec_dec_hw.c      | 12 +++++++++---
 .../platform/mtk-vcodec/mtk_vcodec_dec_hw.h      |  2 ++
 .../platform/mtk-vcodec/mtk_vcodec_dec_pm.c      | 16 ++++++++++++++++
 .../media/platform/mtk-vcodec/mtk_vcodec_drv.h   |  1 +
 4 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
index 7b5da3e4cac2..7374d5a5c156 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
@@ -28,6 +28,10 @@ static const struct of_device_id mtk_vdec_hw_match[] = {
 		.compatible = "mediatek,mtk-vcodec-core",
 		.data = (void *)MTK_VDEC_CORE,
 	},
+	{
+		.compatible = "mediatek,mtk-vcodec-lat-soc",
+		.data = (void *)MTK_VDEC_LAT_SOC,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, mtk_vdec_hw_match);
@@ -166,9 +170,11 @@ static int mtk_vdec_hw_probe(struct platform_device *pdev)
 	subdev_dev->reg_base[VDEC_HW_SYS] = main_dev->reg_base[VDEC_HW_SYS];
 	set_bit(subdev_dev->hw_idx, main_dev->subdev_bitmap);
 
-	ret = mtk_vdec_hw_init_irq(subdev_dev);
-	if (ret)
-		goto err;
+	if (IS_SUPPORT_VDEC_HW_IRQ(hw_idx)) {
+		ret = mtk_vdec_hw_init_irq(subdev_dev);
+		if (ret)
+			goto err;
+	}
 
 	subdev_dev->reg_base[VDEC_HW_MISC] =
 		devm_platform_ioremap_resource(pdev, 0);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
index a63e4b1b81c3..b8938c6c3e72 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
@@ -17,6 +17,8 @@
 #define VDEC_IRQ_CLR 0x10
 #define VDEC_IRQ_CFG_REG 0xa4
 
+#define IS_SUPPORT_VDEC_HW_IRQ(hw_idx) (hw_idx != MTK_VDEC_LAT_SOC)
+
 /**
  * enum mtk_vdec_hw_reg_idx - subdev hardware register base index
  * @VDEC_HW_SYS : vdec soc register index
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
index 1581a1277473..76e1442fc6f9 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
@@ -203,6 +203,14 @@ static void mtk_vcodec_dec_child_dev_on(struct mtk_vcodec_dev *vdec_dev,
 		mtk_vcodec_dec_pw_on(pm);
 		mtk_vcodec_dec_clock_on(pm);
 	}
+
+	if (hw_idx == MTK_VDEC_LAT0) {
+		pm = mtk_vcodec_dec_get_pm(vdec_dev, MTK_VDEC_LAT_SOC);
+		if (pm) {
+			mtk_vcodec_dec_pw_on(pm);
+			mtk_vcodec_dec_clock_on(pm);
+		}
+	}
 }
 
 static void mtk_vcodec_dec_child_dev_off(struct mtk_vcodec_dev *vdec_dev,
@@ -215,6 +223,14 @@ static void mtk_vcodec_dec_child_dev_off(struct mtk_vcodec_dev *vdec_dev,
 		mtk_vcodec_dec_clock_off(pm);
 		mtk_vcodec_dec_pw_off(pm);
 	}
+
+	if (hw_idx == MTK_VDEC_LAT0) {
+		pm = mtk_vcodec_dec_get_pm(vdec_dev, MTK_VDEC_LAT_SOC);
+		if (pm) {
+			mtk_vcodec_dec_clock_off(pm);
+			mtk_vcodec_dec_pw_off(pm);
+		}
+	}
 }
 
 void mtk_vcodec_dec_enable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx)
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index cd2939b47790..363b999dd709 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -104,6 +104,7 @@ enum mtk_vdec_hw_id {
 	MTK_VDEC_CORE,
 	MTK_VDEC_LAT0,
 	MTK_VDEC_LAT1,
+	MTK_VDEC_LAT_SOC,
 	MTK_VDEC_HW_MAX,
 };
 
-- 
2.25.1

[PATCH v2, 3/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for mt8195

[Yunfei Dong]

Adds decoder dt-bindings for mt8195.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
---
 .../bindings/media/mediatek,vcodec-subdev-decoder.yaml           | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
index a3c892338ac0..a2f2db29daed 100644
--- a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
+++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
@@ -50,6 +50,7 @@ properties:
     enum:
       - mediatek,mt8192-vcodec-dec
       - mediatek,mt8186-vcodec-dec
+      - mediatek,mt8195-vcodec-dec
 
   reg:
     maxItems: 1
-- 
2.25.1

[PATCH v2, 4/7] media: mtk-vcodec: Adds compatible for mt8195

[Yunfei Dong]

Adds compatible for mt8195 platform.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index 2d21d0010c9c..938bf14e4e8c 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -468,6 +468,10 @@ static const struct of_device_id mtk_vcodec_match[] = {
 		.compatible = "mediatek,mt8186-vcodec-dec",
 		.data = &mtk_vdec_single_core_pdata,
 	},
+	{
+		.compatible = "mediatek,mt8195-vcodec-dec",
+		.data = &mtk_lat_sig_core_pdata,
+	},
 	{},
 };
 
-- 
2.25.1

[PATCH v2, 5/7] media: mtk-vcodec: Different codec using different capture format

[Yunfei Dong]

Vp8 need to use MM21, but vp9 and h264 need to use HyFbc mode
for mt8195. Vp8/vp9/h264 use the same MM21 format for mt8192.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 .../platform/mtk-vcodec/mtk_vcodec_dec.c      | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index 6ad17e69e32d..f2ced0147534 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -35,6 +35,44 @@ mtk_vdec_find_format(struct v4l2_format *f,
 	return NULL;
 }
 
+static bool mtk_vdec_get_cap_fmt(struct mtk_vcodec_ctx *ctx, int format_index)
+{
+	const struct mtk_vcodec_dec_pdata *dec_pdata = ctx->dev->vdec_pdata;
+	const struct mtk_video_fmt *fmt;
+	struct mtk_q_data *q_data;
+	int num_frame_count = 0, i;
+	bool ret = true;
+
+	for (i = 0; i < *dec_pdata->num_formats; i++) {
+		if (dec_pdata->vdec_formats[i].type != MTK_FMT_FRAME)
+			continue;
+
+		num_frame_count++;
+	}
+
+	if (num_frame_count == 1)
+		return true;
+
+	fmt = &dec_pdata->vdec_formats[format_index];
+	q_data = &ctx->q_data[MTK_Q_DATA_SRC];
+	switch (q_data->fmt->fourcc) {
+	case V4L2_PIX_FMT_VP8_FRAME:
+		if (fmt->fourcc == V4L2_PIX_FMT_MM21)
+			ret = true;
+		break;
+	case V4L2_PIX_FMT_H264_SLICE:
+	case V4L2_PIX_FMT_VP9_FRAME:
+		if (fmt->fourcc == V4L2_PIX_FMT_MM21)
+			ret = false;
+		break;
+	default:
+		ret = true;
+		break;
+	};
+
+	return ret;
+}
+
 static struct mtk_q_data *mtk_vdec_get_q_data(struct mtk_vcodec_ctx *ctx,
 					      enum v4l2_buf_type type)
 {
@@ -578,6 +616,9 @@ static int vidioc_enum_fmt(struct v4l2_fmtdesc *f, void *priv,
 		    dec_pdata->vdec_formats[i].type != MTK_FMT_FRAME)
 			continue;
 
+		if (!output_queue && !mtk_vdec_get_cap_fmt(ctx, i))
+			continue;
+
 		if (j == f->index)
 			break;
 		++j;
-- 
2.25.1

[PATCH v2, 6/7] media: mtk-vcodec: prevent kernel crash when scp ipi timeout

[Yunfei Dong]

From: Tinghan Shen <tinghan.shen@mediatek.com>

When SCP timeout during playing video, kernel crashes with following
message. It's caused by accessing NULL pointer in vpu_dec_ipi_handler.
This patch doesn't solve the root cause of NULL pointer, but merely
prevent kernel crashed when encounter the NULL pointer.

After applied this patch, kernel keeps alive, only the video player turns
to green screen.

[67242.065474] pc : vpu_dec_ipi_handler+0xa0/0xb20 [mtk_vcodec_dec]
[67242.065485] [MTK_V4L2] level=0 fops_vcodec_open(),334:
18000000.vcodec_dec decoder [135]
[67242.065523] lr : scp_ipi_handler+0x11c/0x244 [mtk_scp]
[67242.065540] sp : ffffffbb4207fb10
[67242.065557] x29: ffffffbb4207fb30 x28: ffffffd00a1d5000
[67242.065592] x27: 1ffffffa0143aa24 x26: 0000000000000000
[67242.065625] x25: dfffffd000000000 x24: ffffffd0168bfdb0
[67242.065659] x23: 1ffffff76840ff74 x22: ffffffbb41fa8a88
[67242.065692] x21: ffffffbb4207fb9c x20: ffffffbb4207fba0
[67242.065725] x19: ffffffbb4207fb98 x18: 0000000000000000
[67242.065758] x17: 0000000000000000 x16: ffffffd042022094
[67242.065791] x15: 1ffffff77ed4b71a x14: 1ffffff77ed4b719
[67242.065824] x13: 0000000000000000 x12: 0000000000000000
[67242.065857] x11: 0000000000000000 x10: dfffffd000000001
[67242.065890] x9 : 0000000000000000 x8 : 0000000000000002
[67242.065923] x7 : 0000000000000000 x6 : 000000000000003f
[67242.065956] x5 : 0000000000000040 x4 : ffffffffffffffe0
[67242.065989] x3 : ffffffd043b841b8 x2 : 0000000000000000
[67242.066021] x1 : 0000000000000010 x0 : 0000000000000010
[67242.066055] Call trace:
[67242.066092]  vpu_dec_ipi_handler+0xa0/0xb20 [mtk_vcodec_dec
12220d230d83a7426fc38c56b3e7bc6066955bae]
[67242.066119]  scp_ipi_handler+0x11c/0x244 [mtk_scp
8fb69c2ef141dd3192518b952b65aba35627b8bf]
[67242.066145]  mt8192_scp_irq_handler+0x70/0x128 [mtk_scp
8fb69c2ef141dd3192518b952b65aba35627b8bf]
[67242.066172]  scp_irq_handler+0xa0/0x114 [mtk_scp
8fb69c2ef141dd3192518b952b65aba35627b8bf]
[67242.066200]  irq_thread_fn+0x84/0xf8
[67242.066220]  irq_thread+0x170/0x1ec
[67242.066242]  kthread+0x2f8/0x3b8
[67242.066264]  ret_from_fork+0x10/0x30
[67242.066292] Code: 38f96908 35003628 91004340 d343fc08 (38f96908)

Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
---
 drivers/media/platform/mtk-vcodec/vdec_vpu_if.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
index 35f4d5583084..1041dd663e76 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
@@ -91,6 +91,11 @@ static void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv)
 	struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
 					(unsigned long)msg->ap_inst_addr;
 
+	if (!vpu) {
+		mtk_v4l2_err("ap_inst_addr is NULL");
+		return;
+	}
+
 	mtk_vcodec_debug(vpu, "+ id=%X", msg->msg_id);
 
 	vpu->failure = msg->status;
-- 
2.25.1

[PATCH v2, 7/7] media: mtk-vcodec: Add to support H264 inner racing mode

[Yunfei Dong]

In order to reduce decoder latency, enable H264 inner racing mode.

Send lat trans buffer information to core when trigger lat to work,
need not to wait until lat decode done.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  |  4 +++
 .../platform/mtk-vcodec/mtk_vcodec_dec_pm.c   | 34 +++++++++++++++++++
 .../platform/mtk-vcodec/mtk_vcodec_drv.h      | 10 ++++++
 .../mtk-vcodec/vdec/vdec_h264_req_multi_if.c  | 23 ++++++++++---
 4 files changed, 66 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index 938bf14e4e8c..099dc28b7445 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -390,6 +390,10 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 		}
 	}
 
+	atomic_set(&dev->dec_active_cnt, 0);
+	memset(dev->vdec_racing_info, 0 , sizeof(dev->vdec_racing_info));
+	mutex_init(&dev->dec_racing_info_mutex);
+
 	if (dev->vdec_pdata->uses_stateless_api) {
 		dev->mdev_dec.dev = &pdev->dev;
 		strscpy(dev->mdev_dec.model, MTK_VCODEC_DEC_NAME,
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
index 76e1442fc6f9..065d14a3d11f 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
@@ -173,6 +173,34 @@ static void mtk_vcodec_dec_disable_irq(struct mtk_vcodec_dev *vdec_dev, int hw_i
 	}
 }
 
+static void mtk_vcodec_load_racing_info(struct mtk_vcodec_ctx *ctx)
+{
+	void __iomem *vdec_racing_addr;
+	int j;
+
+	mutex_lock(&ctx->dev->dec_racing_info_mutex);
+	if (atomic_inc_return(&ctx->dev->dec_active_cnt) == 1) {
+		vdec_racing_addr = ctx->dev->reg_base[VDEC_MISC] + 0x100;
+		for (j = 0; j < 132; j++)
+			writel(ctx->dev->vdec_racing_info[j], vdec_racing_addr + j * 4);
+	}
+	mutex_unlock(&ctx->dev->dec_racing_info_mutex);
+}
+
+static void mtk_vcodec_record_racing_info(struct mtk_vcodec_ctx *ctx)
+{
+	void __iomem *vdec_racing_addr;
+	int j;
+
+	mutex_lock(&ctx->dev->dec_racing_info_mutex);
+	if (atomic_dec_and_test(&ctx->dev->dec_active_cnt)) {
+		vdec_racing_addr = ctx->dev->reg_base[VDEC_MISC] + 0x100;
+		for (j = 0; j < 132; j++)
+			ctx->dev->vdec_racing_info[j] = readl(vdec_racing_addr + j * 4);
+	}
+	mutex_unlock(&ctx->dev->dec_racing_info_mutex);
+}
+
 static struct mtk_vcodec_pm *mtk_vcodec_dec_get_pm(struct mtk_vcodec_dev *vdec_dev,
 						   int hw_idx)
 {
@@ -243,11 +271,17 @@ void mtk_vcodec_dec_enable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx)
 	mtk_vcodec_dec_child_dev_on(ctx->dev, hw_idx);
 
 	mtk_vcodec_dec_enable_irq(ctx->dev, hw_idx);
+
+	if (IS_VDEC_INNER_RACING(ctx->dev->dec_capability))
+		mtk_vcodec_load_racing_info(ctx);
 }
 EXPORT_SYMBOL_GPL(mtk_vcodec_dec_enable_hardware);
 
 void mtk_vcodec_dec_disable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx)
 {
+	if (IS_VDEC_INNER_RACING(ctx->dev->dec_capability))
+		mtk_vcodec_record_racing_info(ctx);
+
 	mtk_vcodec_dec_disable_irq(ctx->dev, hw_idx);
 
 	mtk_vcodec_dec_child_dev_off(ctx->dev, hw_idx);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index 363b999dd709..4d6ace869b5a 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -28,6 +28,7 @@
 #define MTK_V4L2_BENCHMARK	0
 #define WAIT_INTR_TIMEOUT_MS	1000
 #define IS_VDEC_LAT_ARCH(hw_arch) ((hw_arch) >= MTK_VDEC_LAT_SINGLE_CORE)
+#define IS_VDEC_INNER_RACING(capability) (capability & MTK_VCODEC_INNER_RACING)
 
 /*
  * enum mtk_hw_reg_idx - MTK hw register base index
@@ -360,6 +361,7 @@ enum mtk_vdec_format_types {
 	MTK_VDEC_FORMAT_H264_SLICE = 0x100,
 	MTK_VDEC_FORMAT_VP8_FRAME = 0x200,
 	MTK_VDEC_FORMAT_VP9_FRAME = 0x400,
+	MTK_VCODEC_INNER_RACING = 0x20000,
 };
 
 /**
@@ -480,6 +482,10 @@ struct mtk_vcodec_enc_pdata {
  * @subdev_dev: subdev hardware device
  * @subdev_prob_done: check whether all used hw device is prob done
  * @subdev_bitmap: used to record hardware is ready or not
+ *
+ * @dec_active_cnt: used to mark whether need to record register value
+ * @vdec_racing_info: record register value
+ * @dec_racing_info_mutex: mutex lock used for inner racing mode
  */
 struct mtk_vcodec_dev {
 	struct v4l2_device v4l2_dev;
@@ -525,6 +531,10 @@ struct mtk_vcodec_dev {
 	void *subdev_dev[MTK_VDEC_HW_MAX];
 	int (*subdev_prob_done)(struct mtk_vcodec_dev *vdec_dev);
 	DECLARE_BITMAP(subdev_bitmap, MTK_VDEC_HW_MAX);
+
+	atomic_t dec_active_cnt;
+	u32 vdec_racing_info[132];
+	struct mutex dec_racing_info_mutex;
 };
 
 static inline struct mtk_vcodec_ctx *fh_to_ctx(struct v4l2_fh *fh)
diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_multi_if.c
index 5541edbafed2..988d1d12d5c8 100644
--- a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_multi_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_multi_if.c
@@ -617,6 +617,17 @@ static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
 		goto err_free_fb_out;
 	}
 
+	share_info->trans_end = inst->ctx->msg_queue.wdma_addr.dma_addr +
+		inst->vsi->wdma_end_addr_offset;
+	share_info->trans_start = inst->ctx->msg_queue.wdma_wptr_addr;
+	share_info->nal_info = inst->vsi->dec.nal_info;
+
+	if (IS_VDEC_INNER_RACING(inst->ctx->dev->dec_capability)) {
+		memcpy(&share_info->h264_slice_params, &inst->vsi->h264_slice_params,
+		       sizeof(share_info->h264_slice_params));
+		vdec_msg_queue_qbuf(&inst->ctx->dev->msg_queue_core_ctx, lat_buf);
+	}
+
 	/* wait decoder done interrupt */
 	timeout = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
 					       WAIT_INTR_TIMEOUT_MS, MTK_VDEC_LAT0);
@@ -630,14 +641,16 @@ static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
 
 	share_info->trans_end = inst->ctx->msg_queue.wdma_addr.dma_addr +
 		inst->vsi->wdma_end_addr_offset;
-	share_info->trans_start = inst->ctx->msg_queue.wdma_wptr_addr;
-	share_info->nal_info = inst->vsi->dec.nal_info;
 	vdec_msg_queue_update_ube_wptr(&lat_buf->ctx->msg_queue,
 				       share_info->trans_end);
 
-	memcpy(&share_info->h264_slice_params, &inst->vsi->h264_slice_params,
-	       sizeof(share_info->h264_slice_params));
-	vdec_msg_queue_qbuf(&inst->ctx->dev->msg_queue_core_ctx, lat_buf);
+	if (!IS_VDEC_INNER_RACING(inst->ctx->dev->dec_capability)) {
+		memcpy(&share_info->h264_slice_params, &inst->vsi->h264_slice_params,
+		       sizeof(share_info->h264_slice_params));
+		vdec_msg_queue_qbuf(&inst->ctx->dev->msg_queue_core_ctx, lat_buf);
+	}
+	mtk_vcodec_debug(inst, "lat crc: 0x%x 0x%x 0x%x", inst->vsi->dec.crc[0],
+			 inst->vsi->dec.crc[1], inst->vsi->dec.crc[2]);
 	inst->slice_dec_num++;
 
 err_free_fb_out:
-- 
2.25.1

Re: [PATCH v2, 1/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for lat soc

[Rob Herring]

On Fri, Jan 28, 2022 at 11:54:34AM +0800, Yunfei Dong wrote:
> Adds decoder dt-bindings for compatible "mediatek,mtk-vcodec-lat-soc".

What's lat soc? How does this relate to what's already there in this 
binding.

The subject space is limited, avoid saying the same thing twice 
(dt-bindings).

> 
> Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
> ---
>  .../media/mediatek,vcodec-subdev-decoder.yaml | 49 +++++++++++++++++++
>  1 file changed, 49 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
> index 6415c9f29130..a3c892338ac0 100644
> --- a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
> +++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml
> @@ -189,6 +189,55 @@ patternProperties:
>  
>      additionalProperties: false
>  
> +  '^vcodec-lat-soc@[0-9a-f]+$':
> +    type: object
> +
> +    properties:
> +      compatible:
> +        const: mediatek,mtk-vcodec-lat-soc
> +
> +      reg:
> +        maxItems: 1
> +
> +      iommus:
> +        minItems: 1
> +        maxItems: 32
> +        description: |
> +          List of the hardware port in respective IOMMU block for current Socs.
> +          Refer to bindings/iommu/mediatek,iommu.yaml.
> +
> +      clocks:
> +        maxItems: 5
> +
> +      clock-names:
> +        items:
> +          - const: sel
> +          - const: soc-vdec
> +          - const: soc-lat
> +          - const: vdec
> +          - const: top
> +
> +      assigned-clocks:
> +        maxItems: 1
> +
> +      assigned-clock-parents:
> +        maxItems: 1
> +
> +      power-domains:
> +        maxItems: 1
> +
> +    required:
> +      - compatible
> +      - reg
> +      - iommus
> +      - clocks
> +      - clock-names
> +      - assigned-clocks
> +      - assigned-clock-parents
> +      - power-domains
> +
> +    additionalProperties: false
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.25.1
> 
> 

Re: [PATCH v2, 3/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for mt8195

[Rob Herring]

On Fri, 28 Jan 2022 11:54:36 +0800, Yunfei Dong wrote:
> Adds decoder dt-bindings for mt8195.
> 
> Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
> Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
> ---
>  .../bindings/media/mediatek,vcodec-subdev-decoder.yaml           | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v2, 1/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for lat soc

[yunfei.dong]

Hi Rob,

Thanks for your suggestion.
On Wed, 2022-02-09 at 14:37 -0600, Rob Herring wrote:
> On Fri, Jan 28, 2022 at 11:54:34AM +0800, Yunfei Dong wrote:
> > Adds decoder dt-bindings for compatible "mediatek,mtk-vcodec-lat-
> > soc".
> 
> What's lat soc? How does this relate to what's already there in this 
> binding.
> 
lat soc is another hardware, is related with some vdec larb ports.
Won't be used to decode, but must to write it in dtsi, or hardware
can't work well.

Need to enable clock/power/iommus, no interrupt.
> The subject space is limited, avoid saying the same thing twice 
> (dt-bindings).
> 

Best Regards,
Yunfei Dong
> > 
> > Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
> > ---
> >  .../media/mediatek,vcodec-subdev-decoder.yaml | 49
> > +++++++++++++++++++
> >  1 file changed, 49 insertions(+)
> > 
> > diff --git
> > a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-
> > decoder.yaml
> > b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-
> > decoder.yaml
> > index 6415c9f29130..a3c892338ac0 100644
> > --- a/Documentation/devicetree/bindings/media/mediatek,vcodec-
> > subdev-decoder.yaml
> > +++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-
> > subdev-decoder.yaml
> > @@ -189,6 +189,55 @@ patternProperties:
> >  
> >      additionalProperties: false
> >  
> > +  '^vcodec-lat-soc@[0-9a-f]+$':
> > +    type: object
> > +
> > +    properties:
> > +      compatible:
> > +        const: mediatek,mtk-vcodec-lat-soc
> > +
> > +      reg:
> > +        maxItems: 1
> > +
> > +      iommus:
> > +        minItems: 1
> > +        maxItems: 32
> > +        description: |
> > +          List of the hardware port in respective IOMMU block for
> > current Socs.
> > +          Refer to bindings/iommu/mediatek,iommu.yaml.
> > +
> > +      clocks:
> > +        maxItems: 5
> > +
> > +      clock-names:
> > +        items:
> > +          - const: sel
> > +          - const: soc-vdec
> > +          - const: soc-lat
> > +          - const: vdec
> > +          - const: top
> > +
> > +      assigned-clocks:
> > +        maxItems: 1
> > +
> > +      assigned-clock-parents:
> > +        maxItems: 1
> > +
> > +      power-domains:
> > +        maxItems: 1
> > +
> > +    required:
> > +      - compatible
> > +      - reg
> > +      - iommus
> > +      - clocks
> > +      - clock-names
> > +      - assigned-clocks
> > +      - assigned-clock-parents
> > +      - power-domains
> > +
> > +    additionalProperties: false
> > +
> >  required:
> >    - compatible
> >    - reg
> > -- 
> > 2.25.1
> > 
> > 

Re: [PATCH v2, 1/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for lat soc

[AngeloGioacchino Del Regno]

Il 10/02/22 04:06, yunfei.dong@mediatek.com ha scritto:
> Hi Rob,
> 
> Thanks for your suggestion.
> On Wed, 2022-02-09 at 14:37 -0600, Rob Herring wrote:
>> On Fri, Jan 28, 2022 at 11:54:34AM +0800, Yunfei Dong wrote:
>>> Adds decoder dt-bindings for compatible "mediatek,mtk-vcodec-lat-
>>> soc".
>>
>> What's lat soc? How does this relate to what's already there in this
>> binding.
>>
> lat soc is another hardware, is related with some vdec larb ports.
> Won't be used to decode, but must to write it in dtsi, or hardware
> can't work well.

Hello Yunfei,

as a suggestion, writing the meaning of the "LAT" acronym may also
help to clear some doubts around (please, also do that in the yaml file,
other than the commit description).

Thank you!
Angelo

> 
> Need to enable clock/power/iommus, no interrupt.
>> The subject space is limited, avoid saying the same thing twice
>> (dt-bindings).
>>
> 
> Best Regards,
> Yunfei Dong
>>>
>>> Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
>>> ---
>>>   .../media/mediatek,vcodec-subdev-decoder.yaml | 49
>>> +++++++++++++++++++
>>>   1 file changed, 49 insertions(+)
>>>
>>> diff --git
>>> a/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-
>>> decoder.yaml
>>> b/Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-
>>> decoder.yaml
>>> index 6415c9f29130..a3c892338ac0 100644
>>> --- a/Documentation/devicetree/bindings/media/mediatek,vcodec-
>>> subdev-decoder.yaml
>>> +++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-
>>> subdev-decoder.yaml
>>> @@ -189,6 +189,55 @@ patternProperties:
>>>   
>>>       additionalProperties: false
>>>   
>>> +  '^vcodec-lat-soc@[0-9a-f]+$':
>>> +    type: object
>>> +
>>> +    properties:
>>> +      compatible:
>>> +        const: mediatek,mtk-vcodec-lat-soc
>>> +
>>> +      reg:
>>> +        maxItems: 1
>>> +
>>> +      iommus:
>>> +        minItems: 1
>>> +        maxItems: 32
>>> +        description: |
>>> +          List of the hardware port in respective IOMMU block for
>>> current Socs.
>>> +          Refer to bindings/iommu/mediatek,iommu.yaml.
>>> +
>>> +      clocks:
>>> +        maxItems: 5
>>> +
>>> +      clock-names:
>>> +        items:
>>> +          - const: sel
>>> +          - const: soc-vdec
>>> +          - const: soc-lat
>>> +          - const: vdec
>>> +          - const: top
>>> +
>>> +      assigned-clocks:
>>> +        maxItems: 1
>>> +
>>> +      assigned-clock-parents:
>>> +        maxItems: 1
>>> +
>>> +      power-domains:
>>> +        maxItems: 1
>>> +
>>> +    required:
>>> +      - compatible
>>> +      - reg
>>> +      - iommus
>>> +      - clocks
>>> +      - clock-names
>>> +      - assigned-clocks
>>> +      - assigned-clock-parents
>>> +      - power-domains
>>> +
>>> +    additionalProperties: false
>>> +
>>>   required:
>>>     - compatible
>>>     - reg
>>> -- 
>>> 2.25.1
>>>
>>>
> 

Re: [PATCH v2, 1/7] dt-bindings: media: mtk-vcodec: Adds decoder dt-bindings for lat soc

[yunfei.dong]

Hi AngeloGioacchino,

Thanks for your suggestion.
On Thu, 2022-02-10 at 09:40 +0100, AngeloGioacchino Del Regno wrote:
> Il 10/02/22 04:06, yunfei.dong@mediatek.com ha scritto:
> > Hi Rob,
> > 
> > Thanks for your suggestion.
> > On Wed, 2022-02-09 at 14:37 -0600, Rob Herring wrote:
> > > On Fri, Jan 28, 2022 at 11:54:34AM +0800, Yunfei Dong wrote:
> > > > Adds decoder dt-bindings for compatible "mediatek,mtk-vcodec-
> > > > lat-
> > > > soc".
> > > 
> > > What's lat soc? How does this relate to what's already there in
> > > this
> > > binding.
> > > 
> > 
> > lat soc is another hardware, is related with some vdec larb ports.
> > Won't be used to decode, but must to write it in dtsi, or hardware
> > can't work well.
> 
> Hello Yunfei,
> 
> as a suggestion, writing the meaning of the "LAT" acronym may also
I'm very sorry, I can't write the meaning of the "LAT" acronym. You can
regards it as an hardware.

> help to clear some doubts around (please, also do that in the yaml
> file,
> other than the commit description).
> 
I will add detail message for this hardware in next patch. And this
hardware only be used for mt8195 at now.

> Thank you!
> Angelo
> 
Best Regards,
Yunfei Dong
> > 
> > Need to enable clock/power/iommus, no interrupt.
> > > The subject space is limited, avoid saying the same thing twice
> > > (dt-bindings).
> > > 
> > 
> > Best Regards,
> > Yunfei Dong
> > > > 
> > > > Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
> > > > ---
> > > >   .../media/mediatek,vcodec-subdev-decoder.yaml | 49
> > > > +++++++++++++++++++
> > > >   1 file changed, 49 insertions(+)
> > > > 
> > > > diff --git
> > > > a/Documentation/devicetree/bindings/media/mediatek,vcodec-
> > > > subdev-
> > > > decoder.yaml
> > > > b/Documentation/devicetree/bindings/media/mediatek,vcodec-
> > > > subdev-
> > > > decoder.yaml
> > > > index 6415c9f29130..a3c892338ac0 100644
> > > > --- a/Documentation/devicetree/bindings/media/mediatek,vcodec-
> > > > subdev-decoder.yaml
> > > > +++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-
> > > > subdev-decoder.yaml
> > > > @@ -189,6 +189,55 @@ patternProperties:
> > > >   
> > > >       additionalProperties: false
> > > >   
> > > > +  '^vcodec-lat-soc@[0-9a-f]+$':
> > > > +    type: object
> > > > +
> > > > +    properties:
> > > > +      compatible:
> > > > +        const: mediatek,mtk-vcodec-lat-soc
> > > > +
> > > > +      reg:
> > > > +        maxItems: 1
> > > > +
> > > > +      iommus:
> > > > +        minItems: 1
> > > > +        maxItems: 32
> > > > +        description: |
> > > > +          List of the hardware port in respective IOMMU block
> > > > for
> > > > current Socs.
> > > > +          Refer to bindings/iommu/mediatek,iommu.yaml.
> > > > +
> > > > +      clocks:
> > > > +        maxItems: 5
> > > > +
> > > > +      clock-names:
> > > > +        items:
> > > > +          - const: sel
> > > > +          - const: soc-vdec
> > > > +          - const: soc-lat
> > > > +          - const: vdec
> > > > +          - const: top
> > > > +
> > > > +      assigned-clocks:
> > > > +        maxItems: 1
> > > > +
> > > > +      assigned-clock-parents:
> > > > +        maxItems: 1
> > > > +
> > > > +      power-domains:
> > > > +        maxItems: 1
> > > > +
> > > > +    required:
> > > > +      - compatible
> > > > +      - reg
> > > > +      - iommus
> > > > +      - clocks
> > > > +      - clock-names
> > > > +      - assigned-clocks
> > > > +      - assigned-clock-parents
> > > > +      - power-domains
> > > > +
> > > > +    additionalProperties: false
> > > > +
> > > >   required:
> > > >     - compatible
> > > >     - reg
> > > > -- 
> > > > 2.25.1
> > > > 
> > > > 
> 
>