[PATCH v6, 04/15] media: mtk-vcodec: Use component framework to manage each hardware information

Yunfei Dong
2021-09-01T08:32:46Z

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>
---
drivers/media/platform/mtk-vcodec/Makefile | 1 +
.../platform/mtk-vcodec/mtk_vcodec_dec.h | 1 +
.../platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 194 +++++++++++++++---
.../platform/mtk-vcodec/mtk_vcodec_dec_hw.c | 184 +++++++++++++++++
.../platform/mtk-vcodec/mtk_vcodec_dec_hw.h | 49 +++++
.../mtk-vcodec/mtk_vcodec_dec_stateful.c | 1 +
.../mtk-vcodec/mtk_vcodec_dec_stateless.c | 1 +
.../platform/mtk-vcodec/mtk_vcodec_drv.h | 19 ++
8 files changed, 416 insertions(+), 34 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 dd749d41c75a..4c6f4d7612fa 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>
@@ -18,19 +19,90 @@

#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"
#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,
+};
+
+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;
+ struct device_node *comp_node;
+ enum mtk_vdec_hw_id comp_idx;
+ const struct of_device_id *of_id;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mtk_vdec_drv_ids); i++) {
+ of_id = &mtk_vdec_drv_ids[i];
+ comp_node = of_find_compatible_node(NULL, NULL,
+ of_id->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;
+ }
+
+ 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;
@@ -95,6 +167,58 @@ static int mtk_vcodec_get_reg_bases(struct mtk_vcodec_dev *dev)
return 0;
}

+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;
+
+ 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;
+ int ret;
+
+ ret = mtk_vcodec_get_reg_bases(dev);
+ if (ret)
+ return ret;
+
+ if (!dev->vdec_pdata->is_comp_supported) {
+ dev->dec_irq = platform_get_irq(pdev, 0);
+ if (dev->dec_irq < 0) {
+ dev_err(&pdev->dev, "failed to get irq number");
+ return dev->dec_irq;
+ }
+
+ 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(pdev, &dev->pm);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to get mt vcodec clock source");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
static int fops_vcodec_open(struct file *file)
{
struct mtk_vcodec_dev *dev = video_drvdata(file);
@@ -220,7 +344,6 @@ 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;
int ret;
@@ -249,32 +372,10 @@ 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;
-
- 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);
+ ret = mtk_vcodec_init_dec_params(dev);
if (ret) {
- dev_err(&pdev->dev, "Failed to install dev->dec_irq %d (%d)",
- dev->dec_irq,
- ret);
- goto err_res;
+ dev_err(&pdev->dev, "Failed to init pm and registers");
+ goto err_dec_pm;
}

mutex_init(&dev->dec_mutex);
@@ -362,8 +463,14 @@ 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->vdec_pdata->is_comp_supported) {
+ ret = mtk_vcodec_init_master(dev);
+ if (ret < 0)
+ goto err_component_match;
+ }

+ return 0;
+err_component_match:
err_dec_reg:
if (dev->vdec_pdata->uses_stateless_api)
media_device_unregister(&dev->mdev_dec);
@@ -382,6 +489,7 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
mtk_vcodec_release_dec_pm(&dev->pm);
err_dec_pm:
mtk_vcodec_fw_release(dev->fw_handler);
+
return ret;
}

@@ -436,7 +544,25 @@ 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..5e1b7670ba5b
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
@@ -0,0 +1,184 @@
+// 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,
+};
+
+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(dec_done_status | VDEC_IRQ_CFG, vdec_misc_addr);
+ writel(dec_done_status & ~VDEC_IRQ_CLR, vdec_misc_addr);
+
+ wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED);
+
+ 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;
+ }
+
+ irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
+ 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 ret;
+ }
+
+ 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;
+ 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..8d6e818a3474
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
@@ -0,0 +1,49 @@
+// 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"
+
+#define VDEC_HW_ACTIVE 0x10
+#define VDEC_IRQ_CFG 0x11
+#define VDEC_IRQ_CLR 0x10
+#define VDEC_IRQ_CFG_REG 0xa4
+
+/**
+ * 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
+ * @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;
+ 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_dec_stateful.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c
index 59c24b22ab6d..4f9a80ce15d8 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c
@@ -623,4 +623,5 @@ const struct mtk_vcodec_dec_pdata mtk_vdec_8173_pdata = {
.num_framesizes = NUM_SUPPORTED_FRAMESIZE,
.worker = mtk_vdec_worker,
.flush_decoder = mtk_vdec_flush_decoder,
+ .is_comp_supported = false,
};
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c
index 8f4a1f0a0769..762633572b49 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c
@@ -357,4 +357,5 @@ const struct mtk_vcodec_dec_pdata mtk_vdec_8183_pdata = {
.uses_stateless_api = true,
.worker = mtk_vdec_worker,
.flush_decoder = mtk_vdec_flush_decoder,
+ .is_comp_supported = false,
};
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index 973b0b3649c6..e530757a9b5a 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -93,6 +93,17 @@ 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
*/
@@ -331,6 +342,7 @@ enum mtk_chip {
*
* @chip: chip this decoder is compatible with
*
+ * @is_comp_supported: true: using compoent framework, false: not support
* @uses_stateless_api: whether the decoder uses the stateless API with requests
*/

@@ -352,6 +364,7 @@ struct mtk_vcodec_dec_pdata {

enum mtk_chip chip;

+ bool is_comp_supported;
bool uses_stateless_api;
};

@@ -422,6 +435,9 @@ 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
+ * @component_node: component node
*/
struct mtk_vcodec_dev {
struct v4l2_device v4l2_dev;
@@ -459,6 +475,9 @@ 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];
};

static inline struct mtk_vcodec_ctx *fh_to_ctx(struct v4l2_fh *fh)
--
2.25.1