Re: [PATCH v2, 03/14] media: mtk-vcodec: Use component framework to manage each hardware information

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On 17.07.21 10:12, Yunfei Dong wrote:
Uses component framework to manage each hardware information which
includes irq/power/clk. The hardware includes LAT0, LAT1 and CORE.

Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
---
v2: fix coding style and remove useless header files
---
  drivers/media/platform/mtk-vcodec/Makefile    |   1 +
  .../platform/mtk-vcodec/mtk_vcodec_dec.h      |   1 +
  .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  | 220 +++++++++++++++---
  .../platform/mtk-vcodec/mtk_vcodec_dec_hw.c   | 193 +++++++++++++++
  .../platform/mtk-vcodec/mtk_vcodec_dec_hw.h   |  46 ++++
  .../platform/mtk-vcodec/mtk_vcodec_drv.h      |  26 +++
  6 files changed, 452 insertions(+), 35 deletions(-)
  create mode 100644 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
  create mode 100644 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h

diff --git a/drivers/media/platform/mtk-vcodec/Makefile b/drivers/media/platform/mtk-vcodec/Makefile
index ca8e9e7a9c4e..edeb3b66e9e9 100644
--- a/drivers/media/platform/mtk-vcodec/Makefile
+++ b/drivers/media/platform/mtk-vcodec/Makefile
@@ -15,6 +15,7 @@ mtk-vcodec-dec-y := vdec/vdec_h264_if.o \
  		mtk_vcodec_dec_stateful.o \
  		mtk_vcodec_dec_stateless.o \
  		mtk_vcodec_dec_pm.o \
+		mtk_vcodec_dec_hw.o \
mtk-vcodec-enc-y := venc/venc_vp8_if.o \
  		venc/venc_h264_if.o \
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h
index 9fbd24186c1a..c509224cbff4 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h
@@ -66,6 +66,7 @@ extern const struct v4l2_ioctl_ops mtk_vdec_ioctl_ops;
  extern const struct v4l2_m2m_ops mtk_vdec_m2m_ops;
  extern const struct media_device_ops mtk_vcodec_media_ops;
+extern struct platform_driver mtk_vdec_comp_driver; /*
   * mtk_vdec_lock/mtk_vdec_unlock are for ctx instance to
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 8d7ba881ef75..e7f60e948fe8 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -5,6 +5,7 @@
   *         Tiffany Lin <tiffany.lin@xxxxxxxxxxxx>
   */
+#include <linux/component.h>
  #include <linux/slab.h>
  #include <linux/interrupt.h>
  #include <linux/irq.h>
@@ -23,14 +24,50 @@
  #include "mtk_vcodec_util.h"
  #include "mtk_vcodec_fw.h"
-#define VDEC_HW_ACTIVE 0x10
-#define VDEC_IRQ_CFG	0x11
-#define VDEC_IRQ_CLR	0x10
-#define VDEC_IRQ_CFG_REG	0xa4
-
  module_param(mtk_v4l2_dbg_level, int, 0644);
  module_param(mtk_vcodec_dbg, bool, 0644);
+static struct of_device_id mtk_vdec_drv_ids[] = {
+	{
+		.compatible = "mediatek,mtk-vcodec-lat",
+		.data = (void *)MTK_VDEC_LAT0,
+	},
+	{
+		.compatible = "mediatek,mtk-vcodec-core",
+		.data = (void *)MTK_VDEC_CORE,
+	},
+	{},
+};
+
+static inline int mtk_vdec_compare_of(struct device *dev, void *data)
+{
+	return dev->of_node == data;
+}
+
+static inline void mtk_vdec_release_of(struct device *dev, void *data)
+{
+	of_node_put(data);
+}
+
+static inline int mtk_vdec_bind(struct device *dev)
+{
+	struct mtk_vcodec_dev *data = dev_get_drvdata(dev);
+
+	return component_bind_all(dev, data);
+}
+
+static inline void mtk_vdec_unbind(struct device *dev)
+{
+	struct mtk_vcodec_dev *data = dev_get_drvdata(dev);
+
+	component_unbind_all(dev, data);
+}
+
+static const struct component_master_ops mtk_vdec_ops = {
+	.bind = mtk_vdec_bind,
+	.unbind = mtk_vdec_unbind,
+};
+
  /* Wake up context wait_queue */
  static void wake_up_ctx(struct mtk_vcodec_ctx *ctx)
  {
@@ -38,6 +75,48 @@ static void wake_up_ctx(struct mtk_vcodec_ctx *ctx)
  	wake_up_interruptible(&ctx->queue);
  }
+static struct component_match *mtk_vcodec_match_add(
+	struct mtk_vcodec_dev *vdec_dev)
+{
+	struct platform_device *pdev = vdec_dev->plat_dev;
+	struct component_match *match = NULL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mtk_vdec_drv_ids); i++) {
+		struct device_node *comp_node;
+		enum mtk_vdec_hw_id comp_idx;
+		const struct of_device_id *of_id;
+
+		comp_node = of_find_compatible_node(NULL, NULL,
+			mtk_vdec_drv_ids[i].compatible);
+		if (!comp_node)
+			continue;
+
+		if (!of_device_is_available(comp_node)) {
+			of_node_put(comp_node);
+			dev_err(&pdev->dev, "Fail to get MMSYS node\n");
+			continue;
+		}
+
+		of_node_put(comp_node);

I think this line should come after the last usage of comp_node

+		of_id = of_match_node(mtk_vdec_drv_ids, comp_node);

I think this might be redundent since of_match_node will return &mtk_vdec_drv_ids[i]
So I think you can just do:
of_id = &mtk_vdec_drv_ids[i]

+		if (!of_id) {
+			dev_err(&pdev->dev, "Failed to get match node\n");
+			return ERR_PTR(-EINVAL);
+		> +
+		comp_idx = (enum mtk_vdec_hw_id)of_id->data;
+		mtk_v4l2_debug(4, "Get component:hw_id(%d),vdec_dev(0x%p),comp_node(0x%p)\n",
+			comp_idx, vdec_dev, comp_node);
+		vdec_dev->component_node[comp_idx] = comp_node;
+
+		component_match_add_release(&pdev->dev, &match, mtk_vdec_release_of,
+			mtk_vdec_compare_of, comp_node);
+	}
+
+	return match;
+}
+
  static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv)
  {
  	struct mtk_vcodec_dev *dev = priv;
@@ -103,6 +182,66 @@ static int mtk_vcodec_get_reg_bases(struct mtk_vcodec_dev *dev)
  	return ret;
  }
+static int mtk_vcodec_init_master(struct mtk_vcodec_dev *dev)
+{
+	struct platform_device *pdev = dev->plat_dev;
+	struct component_match *match;
+	int ret;
+
+	match = mtk_vcodec_match_add(dev);
+	if (IS_ERR_OR_NULL(match))
+		return -EINVAL;
+
+	platform_set_drvdata(pdev, dev);
+	ret = component_master_add_with_match(&pdev->dev, &mtk_vdec_ops, match);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int mtk_vcodec_init_dec_params(struct mtk_vcodec_dev *dev)
+{
+	struct platform_device *pdev = dev->plat_dev;
+	struct resource *res;
+	int ret;
+
+	if (!dev->is_support_comp) {
+		res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

is the call to platform_get_resource needed? res is not used

+		if (!res) {
+			dev_err(&pdev->dev, "failed to get irq resource");
+			return -ENOENT;
+		}
+
+		dev->dec_irq = platform_get_irq(dev->plat_dev, 0);

you can change dev->plat_dev with pdev

+		if (dev->dec_irq < 0) {
+			dev_err(&pdev->dev, "failed to get irq number");
+			return -EINVAL;

return dev->dec_irq here instead of -EINVAL

+		}
+
+		irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
+		ret = devm_request_irq(&pdev->dev, dev->dec_irq,
+				mtk_vcodec_dec_irq_handler, 0, pdev->name, dev);
+		if (ret) {
+			dev_err(&pdev->dev, "failed to install dev->dec_irq %d (%d)",
+				dev->dec_irq, ret);
+			return ret;
+		}
+
+		ret = mtk_vcodec_init_dec_pm(dev->plat_dev, &dev->pm);

you can change dev->plat_dev with pdev

+		if (ret < 0) {
+			dev_err(&pdev->dev, "failed to get mt vcodec clock source");
+			return ret;
+		}
+	}
+
+	ret = mtk_vcodec_get_reg_bases(dev);

you can do this call first in the beginning of the function,
then you don't need to test !dev->is_support_comp in order to undo the pm initialization

+	if (ret && !dev->is_support_comp)
+		mtk_vcodec_release_dec_pm(&dev->pm);
+


+	return ret;
+}
+
  static int fops_vcodec_open(struct file *file)
  {
  	struct mtk_vcodec_dev *dev = video_drvdata(file);
@@ -228,9 +367,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
  {
  	struct mtk_vcodec_dev *dev;
  	struct video_device *vfd_dec;
-	struct resource *res;
  	phandle rproc_phandle;
  	enum mtk_vcodec_fw_type fw_type;
+	struct device_node *comp_node;
  	int ret;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
@@ -257,31 +396,17 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
  	if (IS_ERR(dev->fw_handler))
  		return PTR_ERR(dev->fw_handler);
- ret = mtk_vcodec_init_dec_pm(dev->plat_dev, &dev->pm);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Failed to get mt vcodec clock source");
-		goto err_dec_pm;
-	}
-
-	ret = mtk_vcodec_get_reg_bases(dev);
-	if (ret)
-		goto err_res;
+	comp_node =
+		of_find_compatible_node(NULL, NULL, "mediatek,mtk-vcodec-core");
+	if (!comp_node)
+		dev->is_support_comp = false;
+	else
+		dev->is_support_comp = true;
+	of_node_put(comp_node);
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (res == NULL) {
-		dev_err(&pdev->dev, "failed to get irq resource");
-		ret = -ENOENT;
-		goto err_res;
-	}
-
-	dev->dec_irq = platform_get_irq(pdev, 0);
-	irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
-	ret = devm_request_irq(&pdev->dev, dev->dec_irq,
-			mtk_vcodec_dec_irq_handler, 0, pdev->name, dev);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to install dev->dec_irq %d (%d)",
-			dev->dec_irq,
-			ret);
+	if (mtk_vcodec_init_dec_params(dev)) {
+		dev_err(&pdev->dev, "Failed to init pm and registers");
+		ret = -EINVAL;

ret sould be the return value of mtk_vcodec_init_dec_params

  		goto err_res;
  	}
@@ -319,7 +444,6 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
  		MTK_VCODEC_DEC_NAME);
  	video_set_drvdata(vfd_dec, dev);
  	dev->vfd_dec = vfd_dec;
- platform_set_drvdata(pdev, dev);> dev->m2m_dev_dec = v4l2_m2m_init(&mtk_vdec_m2m_ops);
  	if (IS_ERR((__force void *)dev->m2m_dev_dec)) {
@@ -370,8 +494,17 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
  	mtk_v4l2_debug(0, "decoder registered as /dev/video%d",
  		vfd_dec->num);
- return 0;
+	if (dev->is_support_comp) {
+		ret = mtk_vcodec_init_master(dev);
+		if (ret < 0)
+			goto err_component_match;
+	} else {
+		platform_set_drvdata(pdev, dev);

why do that only if components are not supported?

+	}
+ return 0;
+err_component_match:
+	video_unregister_device(vfd_dec);
  err_dec_reg:
  	if (dev->vdec_pdata->uses_stateless_api)
  		media_device_unregister(&dev->mdev_dec);
@@ -387,9 +520,8 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
  err_dec_alloc:
  	v4l2_device_unregister(&dev->v4l2_dev);
  err_res:
-	mtk_vcodec_release_dec_pm(&dev->pm);
-err_dec_pm:
  	mtk_vcodec_fw_release(dev->fw_handler);
+
  	return ret;
  }
@@ -444,7 +576,25 @@ static struct platform_driver mtk_vcodec_dec_driver = {
  	},
  };
-module_platform_driver(mtk_vcodec_dec_driver);
+static struct platform_driver * const mtk_vdec_drivers[] = {
+	&mtk_vdec_comp_driver,
+	&mtk_vcodec_dec_driver,
+};
+
+static int __init mtk_vdec_init(void)
+{
+	return platform_register_drivers(mtk_vdec_drivers,
+					 ARRAY_SIZE(mtk_vdec_drivers));
+}
+
+static void __exit mtk_vdec_exit(void)
+{
+	platform_unregister_drivers(mtk_vdec_drivers,
+				    ARRAY_SIZE(mtk_vdec_drivers));
+}
+
+module_init(mtk_vdec_init);
+module_exit(mtk_vdec_exit);
MODULE_LICENSE("GPL v2");
  MODULE_DESCRIPTION("Mediatek video codec V4L2 decoder driver");
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
new file mode 100644
index 000000000000..ea6d289d9773
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
+ */
+
+#include <linux/component.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+
+#include "mtk_vcodec_drv.h"
+#include "mtk_vcodec_dec.h"
+#include "mtk_vcodec_dec_hw.h"
+#include "mtk_vcodec_dec_pm.h"
+#include "mtk_vcodec_intr.h"
+#include "mtk_vcodec_util.h"
+
+static int mtk_vdec_comp_bind(struct device *dev, struct device *master,
+	void *data)
+{
+	struct mtk_vdec_comp_dev *comp_dev = dev_get_drvdata(dev);
+	struct mtk_vcodec_dev *master_dev = data;
+	int i;
+
+	for (i = 0; i < MTK_VDEC_HW_MAX; i++) {
+		if (dev->of_node != master_dev->component_node[i])
+			continue;
+
+		master_dev->comp_dev[i] = comp_dev;
+		comp_dev->comp_idx = i;
+		comp_dev->master_dev = master_dev;
+		break;
+	}
+
+	if (i == MTK_VDEC_HW_MAX) {
+		dev_err(dev, "Failed to get component node\n");
+		return -EINVAL;
+	}
+
+	comp_dev->reg_base[VDEC_COMP_SYS] =
+		master_dev->reg_base[VDEC_COMP_SYS];
+	return 0;
+}
+
+static void mtk_vdec_comp_unbind(struct device *dev, struct device *master,
+	void *data)
+{
+	struct mtk_vdec_comp_dev *comp_dev = dev_get_drvdata(dev);
+
+	comp_dev->reg_base[VDEC_COMP_SYS] = NULL;
+}
+
+static const struct component_ops mtk_vdec_hw_component_ops = {
+	.bind = mtk_vdec_comp_bind,
+	.unbind = mtk_vdec_comp_unbind,
+};
+
+/* Wake up context wait_queue */
+static void mtk_vdec_comp_wake_up_ctx(struct mtk_vcodec_ctx *ctx)
+{
+	ctx->int_cond = 1;
+	wake_up_interruptible(&ctx->queue);
+}

This function is identical to the function 'wake_up_ctx' so you should
proably not duplicate it.

+
+static irqreturn_t mtk_vdec_comp_irq_handler(int irq, void *priv)
+{
+	struct mtk_vdec_comp_dev *dev = priv;
+	struct mtk_vcodec_ctx *ctx;
+	u32 cg_status;
+	unsigned int dec_done_status;
+	void __iomem *vdec_misc_addr = dev->reg_base[VDEC_COMP_MISC] +
+					VDEC_IRQ_CFG_REG;
+
+	ctx = mtk_vcodec_get_curr_ctx(dev->master_dev);
+
+	/* check if HW active or not */
+	cg_status = readl(dev->reg_base[VDEC_COMP_SYS]);
+	if ((cg_status & VDEC_HW_ACTIVE) != 0) {
+		mtk_v4l2_err("vdec active is not 0x0 (0x%08x)",
+			cg_status);
+		return IRQ_HANDLED;
+	}
+
+	dec_done_status = readl(vdec_misc_addr);
+	if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
+		MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
+		return IRQ_HANDLED;
+
+	/* clear interrupt */
+	writel(readl(vdec_misc_addr) | VDEC_IRQ_CFG, vdec_misc_addr);
+	writel(readl(vdec_misc_addr) & ~VDEC_IRQ_CLR, vdec_misc_addr);

could these two writel be combined into one writel?
and could the calls 'readl(vdec_misc_addr)' be replaced with 'dec_done_status'?

+
+	mtk_vdec_comp_wake_up_ctx(ctx);
+
+	mtk_v4l2_debug(3, "wake up ctx %d, dec_done_status=%x",
+		ctx->id, dec_done_status);
+
+	return IRQ_HANDLED;
+}
+
+static int mtk_vdec_comp_init_irq(struct mtk_vdec_comp_dev *dev)
+{
+	struct platform_device *pdev = dev->plat_dev;
+	int ret;
+
+	dev->dec_irq = platform_get_irq(pdev, 0);
+	if (dev->dec_irq < 0) {
+		dev_err(&pdev->dev, "Failed to get irq resource");
+		return dev->dec_irq;
+	}
+
+	ret = devm_request_irq(&pdev->dev, dev->dec_irq,
+				mtk_vdec_comp_irq_handler, 0, pdev->name, dev);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to install dev->dec_irq %d (%d)",
+			dev->dec_irq, ret);
+		return -ENOENT;

should return 'ret' here

+	}
+
+	disable_irq(dev->dec_irq);

should this be replaced with:

irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);

?

+	return 0;
+}
+
+static int mtk_vdec_comp_probe(struct platform_device *pdev)
+{
+	struct mtk_vdec_comp_dev *dev;
+	int ret;
+
+	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+
+	dev->plat_dev = pdev;
+	spin_lock_init(&dev->irqlock);

I don't see where this lock is used

+
+	ret = mtk_vcodec_init_dec_pm(pdev, &dev->pm);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to get mt vcodec clock source");
+		return ret;
+	}
+
+	dev->reg_base[VDEC_COMP_MISC] =
+		devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR((__force void *)dev->reg_base[VDEC_COMP_MISC])) {
+		ret = PTR_ERR((__force void *)dev->reg_base[VDEC_COMP_MISC]);
+		goto err;
+	}
+
+	if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL))
+		dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
+
+	ret = mtk_vdec_comp_init_irq(dev);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register irq handler.\n");
+		goto err;
+	}
+
+	platform_set_drvdata(pdev, dev);
+
+	ret = component_add(&pdev->dev, &mtk_vdec_hw_component_ops);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add component: %d\n", ret);
+		goto err;
+	}
+
+	return 0;
+err:
+	mtk_vcodec_release_dec_pm(&dev->pm);
+	return ret;
+}
+
+static const struct of_device_id mtk_vdec_comp_ids[] = {
+	{
+		.compatible = "mediatek,mtk-vcodec-lat",
+	},
+	{
+		.compatible = "mediatek,mtk-vcodec-core",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, mtk_vdec_comp_ids);
+
+struct platform_driver mtk_vdec_comp_driver = {
+	.probe	= mtk_vdec_comp_probe,
+	.driver	= {
+		.name	= "mtk-vdec-comp",
+		.of_match_table = mtk_vdec_comp_ids,
+	},
+};
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
new file mode 100644
index 000000000000..514e3fd190d1
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
+ */
+
+#ifndef _MTK_VCODEC_DEC_HW_H_
+#define _MTK_VCODEC_DEC_HW_H_
+
+#include <linux/io.h>
+#include <linux/platform_device.h>
+
+#include "mtk_vcodec_drv.h"
+
+/**
+ * enum mtk_comp_hw_reg_idx - component register base index
+ */
+enum mtk_comp_hw_reg_idx {
+	VDEC_COMP_SYS,
+	VDEC_COMP_MISC,
+	VDEC_COMP_MAX
+};
+
+/**
+ * struct mtk_vdec_comp_dev - component framwork driver data
+ * @plat_dev: platform device
+ * @master_dev: master device
+ * @irqlock: protect data access by irq handler and work thread
+ * @reg_base: Mapped address of MTK Vcodec registers.
+ *
+ * @dec_irq: decoder irq resource
+ * @pm: power management control
+ * @comp_idx: component index
+ */
+struct mtk_vdec_comp_dev {
+	struct platform_device *plat_dev;
+	struct mtk_vcodec_dev *master_dev;
+	spinlock_t irqlock;
+	void __iomem *reg_base[VDEC_COMP_MAX];
+
+	int dec_irq;
+	struct mtk_vcodec_pm pm;
+	int comp_idx;
+};
+
+#endif /* _MTK_VCODEC_DEC_HW_H_ */
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index 19296fd41c31..4002f786b6e3 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -17,6 +17,11 @@
  #include <media/videobuf2-core.h>
  #include "mtk_vcodec_util.h"
+#define VDEC_HW_ACTIVE 0x10
+#define VDEC_IRQ_CFG	0x11
+#define VDEC_IRQ_CLR	0x10
+#define VDEC_IRQ_CFG_REG	0xa4
+
  #define MTK_VCODEC_DRV_NAME	"mtk_vcodec_drv"
  #define MTK_VCODEC_DEC_NAME	"mtk-vcodec-dec"
  #define MTK_VCODEC_ENC_NAME	"mtk-vcodec-enc"
@@ -93,6 +98,17 @@ enum mtk_fmt_type {
  	MTK_FMT_FRAME = 2,
  };
+/**
+ * struct mtk_vdec_hw_id - Hardware index used to separate
+ *                         different hardware
+ */
+enum mtk_vdec_hw_id {
+	MTK_VDEC_CORE,
+	MTK_VDEC_LAT0,
+	MTK_VDEC_LAT1,
+	MTK_VDEC_HW_MAX,
+ };
+
  /*
   * struct mtk_video_fmt - Structure used to store information about pixelformats
   */
@@ -404,6 +420,7 @@ struct mtk_vcodec_enc_pdata {
   *
   * @fw_handler: used to communicate with the firmware.
   * @id_counter: used to identify current opened instance
+ * @is_support_comp: true: using compoent framework, false: not support

I would rename to 'is_comp_supported'

   *
   * @decode_workqueue: decode work queue
   * @encode_workqueue: encode work queue
@@ -422,6 +439,10 @@ struct mtk_vcodec_enc_pdata {
   * @pm: power management control
   * @dec_capability: used to identify decode capability, ex: 4k
   * @enc_capability: used to identify encode capability
+ *
+ * @comp_dev: component hardware device

This field is not needed, it is only set without beeing used

+ * @component_node: component node
+ * @comp_idx: component index

This field is not used

Thanks,
Dafna

   */
  struct mtk_vcodec_dev {
  	struct v4l2_device v4l2_dev;
@@ -442,6 +463,7 @@ struct mtk_vcodec_dev {
  	struct mtk_vcodec_fw *fw_handler;
unsigned long id_counter;
+	bool is_support_comp;
struct workqueue_struct *decode_workqueue;
  	struct workqueue_struct *encode_workqueue;
@@ -459,6 +481,10 @@ struct mtk_vcodec_dev {
  	struct mtk_vcodec_pm pm;
  	unsigned int dec_capability;
  	unsigned int enc_capability;
+
+	void *comp_dev[MTK_VDEC_HW_MAX];
+	struct device_node *component_node[MTK_VDEC_HW_MAX];
+	int comp_idx;
  };
static inline struct mtk_vcodec_ctx *fh_to_ctx(struct v4l2_fh *fh)





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