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

Dafna Hirschfeld
2021-07-19T09:01:20Z

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@mediatek.com>
> ---
> 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@mediatek.com>
> */
>
> +#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@mediatek.com>
> + */
> +
> +#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@mediatek.com>
> + */
> +
> +#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)
>