[linux-block.git] / drivers / media / platform / mtk-vcodec / mtk_vcodec_enc_drv.c

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@mediatek.com>
*	Tiffany Lin <tiffany.lin@mediatek.com>
*/

#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include <linux/pm_runtime.h>

#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_enc.h"
#include "mtk_vcodec_enc_pm.h"
#include "mtk_vcodec_intr.h"
#include "mtk_vcodec_util.h"
#include "mtk_vpu.h"

module_param(mtk_v4l2_dbg_level, int, S_IRUGO | S_IWUSR);
module_param(mtk_vcodec_dbg, bool, S_IRUGO | S_IWUSR);

/* Wake up context wait_queue */
static void wake_up_ctx(struct mtk_vcodec_ctx *ctx, unsigned int reason)
{
	ctx->int_cond = 1;
	ctx->int_type = reason;
	wake_up_interruptible(&ctx->queue);
}

static void clean_irq_status(unsigned int irq_status, void __iomem *addr)
{
	if (irq_status & MTK_VENC_IRQ_STATUS_PAUSE)
		writel(MTK_VENC_IRQ_STATUS_PAUSE, addr);

	if (irq_status & MTK_VENC_IRQ_STATUS_SWITCH)
		writel(MTK_VENC_IRQ_STATUS_SWITCH, addr);

	if (irq_status & MTK_VENC_IRQ_STATUS_DRAM)
		writel(MTK_VENC_IRQ_STATUS_DRAM, addr);

	if (irq_status & MTK_VENC_IRQ_STATUS_SPS)
		writel(MTK_VENC_IRQ_STATUS_SPS, addr);

	if (irq_status & MTK_VENC_IRQ_STATUS_PPS)
		writel(MTK_VENC_IRQ_STATUS_PPS, addr);

	if (irq_status & MTK_VENC_IRQ_STATUS_FRM)
		writel(MTK_VENC_IRQ_STATUS_FRM, addr);

}
static irqreturn_t mtk_vcodec_enc_irq_handler(int irq, void *priv)
{
	struct mtk_vcodec_dev *dev = priv;
	struct mtk_vcodec_ctx *ctx;
	unsigned long flags;
	void __iomem *addr;

	spin_lock_irqsave(&dev->irqlock, flags);
	ctx = dev->curr_ctx;
	spin_unlock_irqrestore(&dev->irqlock, flags);

	mtk_v4l2_debug(1, "id=%d", ctx->id);
	addr = dev->reg_base[VENC_SYS] + MTK_VENC_IRQ_ACK_OFFSET;

	ctx->irq_status = readl(dev->reg_base[VENC_SYS] +
				(MTK_VENC_IRQ_STATUS_OFFSET));

	clean_irq_status(ctx->irq_status, addr);

	wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED);
	return IRQ_HANDLED;
}

static irqreturn_t mtk_vcodec_enc_lt_irq_handler(int irq, void *priv)
{
	struct mtk_vcodec_dev *dev = priv;
	struct mtk_vcodec_ctx *ctx;
	unsigned long flags;
	void __iomem *addr;

	spin_lock_irqsave(&dev->irqlock, flags);
	ctx = dev->curr_ctx;
	spin_unlock_irqrestore(&dev->irqlock, flags);

	mtk_v4l2_debug(1, "id=%d", ctx->id);
	ctx->irq_status = readl(dev->reg_base[VENC_LT_SYS] +
				(MTK_VENC_IRQ_STATUS_OFFSET));

	addr = dev->reg_base[VENC_LT_SYS] + MTK_VENC_IRQ_ACK_OFFSET;

	clean_irq_status(ctx->irq_status, addr);

	wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED);
	return IRQ_HANDLED;
}

static void mtk_vcodec_enc_reset_handler(void *priv)
{
	struct mtk_vcodec_dev *dev = priv;
	struct mtk_vcodec_ctx *ctx;

	mtk_v4l2_debug(0, "Watchdog timeout!!");

	mutex_lock(&dev->dev_mutex);
	list_for_each_entry(ctx, &dev->ctx_list, list) {
		ctx->state = MTK_STATE_ABORT;
		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
				ctx->id);
	}
	mutex_unlock(&dev->dev_mutex);
}

static int fops_vcodec_open(struct file *file)
{
	struct mtk_vcodec_dev *dev = video_drvdata(file);
	struct mtk_vcodec_ctx *ctx = NULL;
	int ret = 0;

	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;

	mutex_lock(&dev->dev_mutex);
	/*
	 * Use simple counter to uniquely identify this context. Only
	 * used for logging.
	 */
	ctx->id = dev->id_counter++;
	v4l2_fh_init(&ctx->fh, video_devdata(file));
	file->private_data = &ctx->fh;
	v4l2_fh_add(&ctx->fh);
	INIT_LIST_HEAD(&ctx->list);
	ctx->dev = dev;
	init_waitqueue_head(&ctx->queue);

	ctx->type = MTK_INST_ENCODER;
	ret = mtk_vcodec_enc_ctrls_setup(ctx);
	if (ret) {
		mtk_v4l2_err("Failed to setup controls() (%d)",
				ret);
		goto err_ctrls_setup;
	}
	ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev_enc, ctx,
				&mtk_vcodec_enc_queue_init);
	if (IS_ERR((__force void *)ctx->m2m_ctx)) {
		ret = PTR_ERR((__force void *)ctx->m2m_ctx);
		mtk_v4l2_err("Failed to v4l2_m2m_ctx_init() (%d)",
				ret);
		goto err_m2m_ctx_init;
	}
	mtk_vcodec_enc_set_default_params(ctx);

	if (v4l2_fh_is_singular(&ctx->fh)) {
		/*
		 * vpu_load_firmware checks if it was loaded already and
		 * does nothing in that case
		 */
		ret = vpu_load_firmware(dev->vpu_plat_dev);
		if (ret < 0) {
			/*
			 * Return 0 if downloading firmware successfully,
			 * otherwise it is failed
			 */
			mtk_v4l2_err("vpu_load_firmware failed!");
			goto err_load_fw;
		}

		dev->enc_capability =
			vpu_get_venc_hw_capa(dev->vpu_plat_dev);
		mtk_v4l2_debug(0, "encoder capability %x", dev->enc_capability);
	}

	mtk_v4l2_debug(2, "Create instance [%d]@%p m2m_ctx=%p ",
			ctx->id, ctx, ctx->m2m_ctx);

	list_add(&ctx->list, &dev->ctx_list);

	mutex_unlock(&dev->dev_mutex);
	mtk_v4l2_debug(0, "%s encoder [%d]", dev_name(&dev->plat_dev->dev),
			ctx->id);
	return ret;

	/* Deinit when failure occurred */
err_load_fw:
	v4l2_m2m_ctx_release(ctx->m2m_ctx);
err_m2m_ctx_init:
	v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
err_ctrls_setup:
	v4l2_fh_del(&ctx->fh);
	v4l2_fh_exit(&ctx->fh);
	kfree(ctx);
	mutex_unlock(&dev->dev_mutex);

	return ret;
}

static int fops_vcodec_release(struct file *file)
{
	struct mtk_vcodec_dev *dev = video_drvdata(file);
	struct mtk_vcodec_ctx *ctx = fh_to_ctx(file->private_data);

	mtk_v4l2_debug(1, "[%d] encoder", ctx->id);
	mutex_lock(&dev->dev_mutex);

	mtk_vcodec_enc_release(ctx);
	v4l2_fh_del(&ctx->fh);
	v4l2_fh_exit(&ctx->fh);
	v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
	v4l2_m2m_ctx_release(ctx->m2m_ctx);

	list_del_init(&ctx->list);
	kfree(ctx);
	mutex_unlock(&dev->dev_mutex);
	return 0;
}

static const struct v4l2_file_operations mtk_vcodec_fops = {
	.owner		= THIS_MODULE,
	.open		= fops_vcodec_open,
	.release	= fops_vcodec_release,
	.poll		= v4l2_m2m_fop_poll,
	.unlocked_ioctl	= video_ioctl2,
	.mmap		= v4l2_m2m_fop_mmap,
};

static int mtk_vcodec_probe(struct platform_device *pdev)
{
	struct mtk_vcodec_dev *dev;
	struct video_device *vfd_enc;
	struct resource *res;
	int i, j, ret;

	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
	if (!dev)
		return -ENOMEM;

	INIT_LIST_HEAD(&dev->ctx_list);
	dev->plat_dev = pdev;

	dev->vpu_plat_dev = vpu_get_plat_device(dev->plat_dev);
	if (dev->vpu_plat_dev == NULL) {
		mtk_v4l2_err("[VPU] vpu device in not ready");
		return -EPROBE_DEFER;
	}

	vpu_wdt_reg_handler(dev->vpu_plat_dev, mtk_vcodec_enc_reset_handler,
				dev, VPU_RST_ENC);

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

	for (i = VENC_SYS, j = 0; i < NUM_MAX_VCODEC_REG_BASE; i++, j++) {
		res = platform_get_resource(pdev, IORESOURCE_MEM, j);
		dev->reg_base[i] = devm_ioremap_resource(&pdev->dev, res);
		if (IS_ERR((__force void *)dev->reg_base[i])) {
			ret = PTR_ERR((__force void *)dev->reg_base[i]);
			goto err_res;
		}
		mtk_v4l2_debug(2, "reg[%d] base=0x%p", i, dev->reg_base[i]);
	}

	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->enc_irq = platform_get_irq(pdev, 0);
	ret = devm_request_irq(&pdev->dev, dev->enc_irq,
			       mtk_vcodec_enc_irq_handler,
			       0, pdev->name, dev);
	if (ret) {
		dev_err(&pdev->dev, "Failed to install dev->enc_irq %d (%d)",
			dev->enc_irq,
			ret);
		ret = -EINVAL;
		goto err_res;
	}

	dev->enc_lt_irq = platform_get_irq(pdev, 1);
	ret = devm_request_irq(&pdev->dev,
			       dev->enc_lt_irq, mtk_vcodec_enc_lt_irq_handler,
			       0, pdev->name, dev);
	if (ret) {
		dev_err(&pdev->dev,
			"Failed to install dev->enc_lt_irq %d (%d)",
			dev->enc_lt_irq, ret);
		ret = -EINVAL;
		goto err_res;
	}

	disable_irq(dev->enc_irq);
	disable_irq(dev->enc_lt_irq); /* VENC_LT */
	mutex_init(&dev->enc_mutex);
	mutex_init(&dev->dev_mutex);
	spin_lock_init(&dev->irqlock);

	snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s",
		 "[MTK_V4L2_VENC]");

	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
	if (ret) {
		mtk_v4l2_err("v4l2_device_register err=%d", ret);
		goto err_res;
	}

	init_waitqueue_head(&dev->queue);

	/* allocate video device for encoder and register it */
	vfd_enc = video_device_alloc();
	if (!vfd_enc) {
		mtk_v4l2_err("Failed to allocate video device");
		ret = -ENOMEM;
		goto err_enc_alloc;
	}
	vfd_enc->fops           = &mtk_vcodec_fops;
	vfd_enc->ioctl_ops      = &mtk_venc_ioctl_ops;
	vfd_enc->release        = video_device_release;
	vfd_enc->lock           = &dev->dev_mutex;
	vfd_enc->v4l2_dev       = &dev->v4l2_dev;
	vfd_enc->vfl_dir        = VFL_DIR_M2M;
	vfd_enc->device_caps	= V4L2_CAP_VIDEO_M2M_MPLANE |
					V4L2_CAP_STREAMING;

	snprintf(vfd_enc->name, sizeof(vfd_enc->name), "%s",
		 MTK_VCODEC_ENC_NAME);
	video_set_drvdata(vfd_enc, dev);
	dev->vfd_enc = vfd_enc;
	platform_set_drvdata(pdev, dev);

	dev->m2m_dev_enc = v4l2_m2m_init(&mtk_venc_m2m_ops);
	if (IS_ERR((__force void *)dev->m2m_dev_enc)) {
		mtk_v4l2_err("Failed to init mem2mem enc device");
		ret = PTR_ERR((__force void *)dev->m2m_dev_enc);
		goto err_enc_mem_init;
	}

	dev->encode_workqueue =
			alloc_ordered_workqueue(MTK_VCODEC_ENC_NAME,
						WQ_MEM_RECLAIM |
						WQ_FREEZABLE);
	if (!dev->encode_workqueue) {
		mtk_v4l2_err("Failed to create encode workqueue");
		ret = -EINVAL;
		goto err_event_workq;
	}

	ret = video_register_device(vfd_enc, VFL_TYPE_VIDEO, 1);
	if (ret) {
		mtk_v4l2_err("Failed to register video device");
		goto err_enc_reg;
	}

	mtk_v4l2_debug(0, "encoder registered as /dev/video%d",
			vfd_enc->num);

	return 0;

err_enc_reg:
	destroy_workqueue(dev->encode_workqueue);
err_event_workq:
	v4l2_m2m_release(dev->m2m_dev_enc);
err_enc_mem_init:
	video_unregister_device(vfd_enc);
err_enc_alloc:
	v4l2_device_unregister(&dev->v4l2_dev);
err_res:
	mtk_vcodec_release_enc_pm(dev);
	return ret;
}

static const struct of_device_id mtk_vcodec_enc_match[] = {
	{.compatible = "mediatek,mt8173-vcodec-enc",},
	{},
};
MODULE_DEVICE_TABLE(of, mtk_vcodec_enc_match);

static int mtk_vcodec_enc_remove(struct platform_device *pdev)
{
	struct mtk_vcodec_dev *dev = platform_get_drvdata(pdev);

	mtk_v4l2_debug_enter();
	flush_workqueue(dev->encode_workqueue);
	destroy_workqueue(dev->encode_workqueue);
	if (dev->m2m_dev_enc)
		v4l2_m2m_release(dev->m2m_dev_enc);

	if (dev->vfd_enc)
		video_unregister_device(dev->vfd_enc);

	v4l2_device_unregister(&dev->v4l2_dev);
	mtk_vcodec_release_enc_pm(dev);
	return 0;
}

static struct platform_driver mtk_vcodec_enc_driver = {
	.probe	= mtk_vcodec_probe,
	.remove	= mtk_vcodec_enc_remove,
	.driver	= {
		.name	= MTK_VCODEC_ENC_NAME,
		.of_match_table = mtk_vcodec_enc_match,
	},
};

module_platform_driver(mtk_vcodec_enc_driver);


MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Mediatek video codec V4L2 encoder driver");
Commit	Line	Data
9293e39c	1	// SPDX-License-Identifier: GPL-2.0
4e855a6e TL	2	/*
	3	* Copyright (c) 2016 MediaTek Inc.
	4	* Author: PC Chen <pc.chen@mediatek.com>
	5	* Tiffany Lin <tiffany.lin@mediatek.com>
4e855a6e TL	6	*/
	7
	8	#include <linux/slab.h>
	9	#include <linux/interrupt.h>
	10	#include <linux/irq.h>
	11	#include <linux/module.h>
	12	#include <linux/of_device.h>
	13	#include <linux/of.h>
	14	#include <media/v4l2-event.h>
	15	#include <media/v4l2-mem2mem.h>
	16	#include <media/videobuf2-dma-contig.h>
	17	#include <linux/pm_runtime.h>
	18
	19	#include "mtk_vcodec_drv.h"
	20	#include "mtk_vcodec_enc.h"
	21	#include "mtk_vcodec_enc_pm.h"
	22	#include "mtk_vcodec_intr.h"
	23	#include "mtk_vcodec_util.h"
	24	#include "mtk_vpu.h"
	25
	26	module_param(mtk_v4l2_dbg_level, int, S_IRUGO \| S_IWUSR);
	27	module_param(mtk_vcodec_dbg, bool, S_IRUGO \| S_IWUSR);
	28
	29	/* Wake up context wait_queue */
	30	static void wake_up_ctx(struct mtk_vcodec_ctx *ctx, unsigned int reason)
	31	{
	32	ctx->int_cond = 1;
	33	ctx->int_type = reason;
	34	wake_up_interruptible(&ctx->queue);
	35	}
	36
	37	static void clean_irq_status(unsigned int irq_status, void __iomem *addr)
	38	{
	39	if (irq_status & MTK_VENC_IRQ_STATUS_PAUSE)
	40	writel(MTK_VENC_IRQ_STATUS_PAUSE, addr);
	41
	42	if (irq_status & MTK_VENC_IRQ_STATUS_SWITCH)
	43	writel(MTK_VENC_IRQ_STATUS_SWITCH, addr);
	44
	45	if (irq_status & MTK_VENC_IRQ_STATUS_DRAM)
	46	writel(MTK_VENC_IRQ_STATUS_DRAM, addr);
	47
	48	if (irq_status & MTK_VENC_IRQ_STATUS_SPS)
	49	writel(MTK_VENC_IRQ_STATUS_SPS, addr);
	50
	51	if (irq_status & MTK_VENC_IRQ_STATUS_PPS)
	52	writel(MTK_VENC_IRQ_STATUS_PPS, addr);
	53
	54	if (irq_status & MTK_VENC_IRQ_STATUS_FRM)
	55	writel(MTK_VENC_IRQ_STATUS_FRM, addr);
	56
	57	}
	58	static irqreturn_t mtk_vcodec_enc_irq_handler(int irq, void *priv)
	59	{
	60	struct mtk_vcodec_dev *dev = priv;
	61	struct mtk_vcodec_ctx *ctx;
	62	unsigned long flags;
	63	void __iomem *addr;
	64
	65	spin_lock_irqsave(&dev->irqlock, flags);
	66	ctx = dev->curr_ctx;
	67	spin_unlock_irqrestore(&dev->irqlock, flags);
	68
	69	mtk_v4l2_debug(1, "id=%d", ctx->id);
70	addr = dev->reg_base[VENC_SYS] + MTK_VENC_IRQ_ACK_OFFSET;
71
72	ctx->irq_status = readl(dev->reg_base[VENC_SYS] +
73	(MTK_VENC_IRQ_STATUS_OFFSET));
74
75	clean_irq_status(ctx->irq_status, addr);
76
77	wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED);
78	return IRQ_HANDLED;
79	}
80
81	static irqreturn_t mtk_vcodec_enc_lt_irq_handler(int irq, void *priv)
82	{
83	struct mtk_vcodec_dev *dev = priv;
84	struct mtk_vcodec_ctx *ctx;
85	unsigned long flags;
86	void __iomem *addr;
87
88	spin_lock_irqsave(&dev->irqlock, flags);
89	ctx = dev->curr_ctx;
90	spin_unlock_irqrestore(&dev->irqlock, flags);
91
92	mtk_v4l2_debug(1, "id=%d", ctx->id);
93	ctx->irq_status = readl(dev->reg_base[VENC_LT_SYS] +
94	(MTK_VENC_IRQ_STATUS_OFFSET));
95
96	addr = dev->reg_base[VENC_LT_SYS] + MTK_VENC_IRQ_ACK_OFFSET;
97
98	clean_irq_status(ctx->irq_status, addr);
99
100	wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED);
101	return IRQ_HANDLED;
102	}
103
104	static void mtk_vcodec_enc_reset_handler(void *priv)
105	{
106	struct mtk_vcodec_dev *dev = priv;
107	struct mtk_vcodec_ctx *ctx;
108
109	mtk_v4l2_debug(0, "Watchdog timeout!!");
110
111	mutex_lock(&dev->dev_mutex);
112	list_for_each_entry(ctx, &dev->ctx_list, list) {
113	ctx->state = MTK_STATE_ABORT;
114	mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
115	ctx->id);
116	}
117	mutex_unlock(&dev->dev_mutex);
118	}
119
120	static int fops_vcodec_open(struct file *file)
121	{
122	struct mtk_vcodec_dev *dev = video_drvdata(file);
123	struct mtk_vcodec_ctx *ctx = NULL;
124	int ret = 0;
125
126	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
127	if (!ctx)
128	return -ENOMEM;
129
130	mutex_lock(&dev->dev_mutex);
131	/*
132	* Use simple counter to uniquely identify this context. Only
133	* used for logging.
134	*/
135	ctx->id = dev->id_counter++;
136	v4l2_fh_init(&ctx->fh, video_devdata(file));
137	file->private_data = &ctx->fh;
138	v4l2_fh_add(&ctx->fh);
139	INIT_LIST_HEAD(&ctx->list);
140	ctx->dev = dev;
141	init_waitqueue_head(&ctx->queue);
142
143	ctx->type = MTK_INST_ENCODER;
144	ret = mtk_vcodec_enc_ctrls_setup(ctx);
145	if (ret) {
146	mtk_v4l2_err("Failed to setup controls() (%d)",
147	ret);
148	goto err_ctrls_setup;
149	}
150	ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev_enc, ctx,
151	&mtk_vcodec_enc_queue_init);
152	if (IS_ERR((__force void *)ctx->m2m_ctx)) {
153	ret = PTR_ERR((__force void *)ctx->m2m_ctx);
154	mtk_v4l2_err("Failed to v4l2_m2m_ctx_init() (%d)",
155	ret);
156	goto err_m2m_ctx_init;
157	}
158	mtk_vcodec_enc_set_default_params(ctx);
159
160	if (v4l2_fh_is_singular(&ctx->fh)) {
161	/*
162	* vpu_load_firmware checks if it was loaded already and
163	* does nothing in that case
164	*/
165	ret = vpu_load_firmware(dev->vpu_plat_dev);
166	if (ret < 0) {
167	/*
168	* Return 0 if downloading firmware successfully,
169	* otherwise it is failed
170	*/
171	mtk_v4l2_err("vpu_load_firmware failed!");
172	goto err_load_fw;
173	}
174
175	dev->enc_capability =
176	vpu_get_venc_hw_capa(dev->vpu_plat_dev);
177	mtk_v4l2_debug(0, "encoder capability %x", dev->enc_capability);
178	}
179
180	mtk_v4l2_debug(2, "Create instance [%d]@%p m2m_ctx=%p ",
181	ctx->id, ctx, ctx->m2m_ctx);
182
4e855a6e TL	183	list_add(&ctx->list, &dev->ctx_list);
	184
	185	mutex_unlock(&dev->dev_mutex);
	186	mtk_v4l2_debug(0, "%s encoder [%d]", dev_name(&dev->plat_dev->dev),
	187	ctx->id);
	188	return ret;
	189
	190	/* Deinit when failure occurred */
	191	err_load_fw:
	192	v4l2_m2m_ctx_release(ctx->m2m_ctx);
	193	err_m2m_ctx_init:
	194	v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
	195	err_ctrls_setup:
	196	v4l2_fh_del(&ctx->fh);
	197	v4l2_fh_exit(&ctx->fh);
	198	kfree(ctx);
	199	mutex_unlock(&dev->dev_mutex);
	200
	201	return ret;
	202	}
	203
	204	static int fops_vcodec_release(struct file *file)
	205	{
	206	struct mtk_vcodec_dev *dev = video_drvdata(file);
	207	struct mtk_vcodec_ctx *ctx = fh_to_ctx(file->private_data);
	208
	209	mtk_v4l2_debug(1, "[%d] encoder", ctx->id);
	210	mutex_lock(&dev->dev_mutex);
	211
	212	mtk_vcodec_enc_release(ctx);
	213	v4l2_fh_del(&ctx->fh);
	214	v4l2_fh_exit(&ctx->fh);
	215	v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
590577a4	216	v4l2_m2m_ctx_release(ctx->m2m_ctx);
4e855a6e TL	217
4e855a6e TL	218	list_del_init(&ctx->list);
4e855a6e TL	219	kfree(ctx);
	220	mutex_unlock(&dev->dev_mutex);
	221	return 0;
	222	}
	223
	224	static const struct v4l2_file_operations mtk_vcodec_fops = {
	225	.owner = THIS_MODULE,
	226	.open = fops_vcodec_open,
	227	.release = fops_vcodec_release,
	228	.poll = v4l2_m2m_fop_poll,
	229	.unlocked_ioctl = video_ioctl2,
	230	.mmap = v4l2_m2m_fop_mmap,
	231	};
	232
	233	static int mtk_vcodec_probe(struct platform_device *pdev)
	234	{
	235	struct mtk_vcodec_dev *dev;
	236	struct video_device *vfd_enc;
	237	struct resource *res;
	238	int i, j, ret;
4e855a6e TL	239
	240	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
	241	if (!dev)
	242	return -ENOMEM;
	243
	244	INIT_LIST_HEAD(&dev->ctx_list);
	245	dev->plat_dev = pdev;
	246
	247	dev->vpu_plat_dev = vpu_get_plat_device(dev->plat_dev);
	248	if (dev->vpu_plat_dev == NULL) {
	249	mtk_v4l2_err("[VPU] vpu device in not ready");
	250	return -EPROBE_DEFER;
	251	}
	252
	253	vpu_wdt_reg_handler(dev->vpu_plat_dev, mtk_vcodec_enc_reset_handler,
	254	dev, VPU_RST_ENC);
	255
	256	ret = mtk_vcodec_init_enc_pm(dev);
	257	if (ret < 0) {
	258	dev_err(&pdev->dev, "Failed to get mt vcodec clock source!");
	259	return ret;
	260	}
	261
	262	for (i = VENC_SYS, j = 0; i < NUM_MAX_VCODEC_REG_BASE; i++, j++) {
	263	res = platform_get_resource(pdev, IORESOURCE_MEM, j);
4e855a6e TL	264	dev->reg_base[i] = devm_ioremap_resource(&pdev->dev, res);
4e855a6e TL	265	if (IS_ERR((__force void *)dev->reg_base[i])) {
4e855a6e TL	266	ret = PTR_ERR((__force void *)dev->reg_base[i]);
	267	goto err_res;
	268	}
	269	mtk_v4l2_debug(2, "reg[%d] base=0x%p", i, dev->reg_base[i]);
	270	}
	271
	272	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	273	if (res == NULL) {
	274	dev_err(&pdev->dev, "failed to get irq resource");
	275	ret = -ENOENT;
	276	goto err_res;
	277	}
	278
	279	dev->enc_irq = platform_get_irq(pdev, 0);
	280	ret = devm_request_irq(&pdev->dev, dev->enc_irq,
	281	mtk_vcodec_enc_irq_handler,
	282	0, pdev->name, dev);
	283	if (ret) {
	284	dev_err(&pdev->dev, "Failed to install dev->enc_irq %d (%d)",
	285	dev->enc_irq,
	286	ret);
	287	ret = -EINVAL;
	288	goto err_res;
	289	}
	290
	291	dev->enc_lt_irq = platform_get_irq(pdev, 1);
	292	ret = devm_request_irq(&pdev->dev,
	293	dev->enc_lt_irq, mtk_vcodec_enc_lt_irq_handler,
	294	0, pdev->name, dev);
	295	if (ret) {
	296	dev_err(&pdev->dev,
	297	"Failed to install dev->enc_lt_irq %d (%d)",
	298	dev->enc_lt_irq, ret);
	299	ret = -EINVAL;
	300	goto err_res;
	301	}
	302
	303	disable_irq(dev->enc_irq);
	304	disable_irq(dev->enc_lt_irq); /* VENC_LT */
	305	mutex_init(&dev->enc_mutex);
	306	mutex_init(&dev->dev_mutex);
	307	spin_lock_init(&dev->irqlock);
	308
	309	snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s",
	310	"[MTK_V4L2_VENC]");
	311
	312	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
	313	if (ret) {
	314	mtk_v4l2_err("v4l2_device_register err=%d", ret);
	315	goto err_res;
	316	}
	317
	318	init_waitqueue_head(&dev->queue);
	319
	320	/* allocate video device for encoder and register it */
	321	vfd_enc = video_device_alloc();
	322	if (!vfd_enc) {
	323	mtk_v4l2_err("Failed to allocate video device");
	324	ret = -ENOMEM;
	325	goto err_enc_alloc;
	326	}
	327	vfd_enc->fops = &mtk_vcodec_fops;
	328	vfd_enc->ioctl_ops = &mtk_venc_ioctl_ops;
	329	vfd_enc->release = video_device_release;
330	vfd_enc->lock = &dev->dev_mutex;
331	vfd_enc->v4l2_dev = &dev->v4l2_dev;
332	vfd_enc->vfl_dir = VFL_DIR_M2M;
333	vfd_enc->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE \|
334	V4L2_CAP_STREAMING;
335
336	snprintf(vfd_enc->name, sizeof(vfd_enc->name), "%s",
337	MTK_VCODEC_ENC_NAME);
338	video_set_drvdata(vfd_enc, dev);
339	dev->vfd_enc = vfd_enc;
340	platform_set_drvdata(pdev, dev);
341
4e855a6e TL	342	dev->m2m_dev_enc = v4l2_m2m_init(&mtk_venc_m2m_ops);
	343	if (IS_ERR((__force void *)dev->m2m_dev_enc)) {
	344	mtk_v4l2_err("Failed to init mem2mem enc device");
	345	ret = PTR_ERR((__force void *)dev->m2m_dev_enc);
	346	goto err_enc_mem_init;
	347	}
	348
	349	dev->encode_workqueue =
	350	alloc_ordered_workqueue(MTK_VCODEC_ENC_NAME,
	351	WQ_MEM_RECLAIM \|
	352	WQ_FREEZABLE);
	353	if (!dev->encode_workqueue) {
	354	mtk_v4l2_err("Failed to create encode workqueue");
	355	ret = -EINVAL;
	356	goto err_event_workq;
	357	}
	358
70cad449	359	ret = video_register_device(vfd_enc, VFL_TYPE_VIDEO, 1);
4e855a6e TL	360	if (ret) {
	361	mtk_v4l2_err("Failed to register video device");
	362	goto err_enc_reg;
	363	}
	364
4e855a6e TL	365	mtk_v4l2_debug(0, "encoder registered as /dev/video%d",
	366	vfd_enc->num);
	367
	368	return 0;
	369
	370	err_enc_reg:
	371	destroy_workqueue(dev->encode_workqueue);
	372	err_event_workq:
	373	v4l2_m2m_release(dev->m2m_dev_enc);
	374	err_enc_mem_init:
4e855a6e TL	375	video_unregister_device(vfd_enc);
	376	err_enc_alloc:
	377	v4l2_device_unregister(&dev->v4l2_dev);
	378	err_res:
	379	mtk_vcodec_release_enc_pm(dev);
	380	return ret;
	381	}
	382
	383	static const struct of_device_id mtk_vcodec_enc_match[] = {
	384	{.compatible = "mediatek,mt8173-vcodec-enc",},
	385	{},
	386	};
	387	MODULE_DEVICE_TABLE(of, mtk_vcodec_enc_match);
	388
	389	static int mtk_vcodec_enc_remove(struct platform_device *pdev)
	390	{
	391	struct mtk_vcodec_dev *dev = platform_get_drvdata(pdev);
	392
	393	mtk_v4l2_debug_enter();
	394	flush_workqueue(dev->encode_workqueue);
	395	destroy_workqueue(dev->encode_workqueue);
	396	if (dev->m2m_dev_enc)
	397	v4l2_m2m_release(dev->m2m_dev_enc);
4e855a6e TL	398
	399	if (dev->vfd_enc)
	400	video_unregister_device(dev->vfd_enc);
	401
	402	v4l2_device_unregister(&dev->v4l2_dev);
	403	mtk_vcodec_release_enc_pm(dev);
	404	return 0;
	405	}
	406
	407	static struct platform_driver mtk_vcodec_enc_driver = {
	408	.probe = mtk_vcodec_probe,
	409	.remove = mtk_vcodec_enc_remove,
	410	.driver = {
	411	.name = MTK_VCODEC_ENC_NAME,
4e855a6e TL	412	.of_match_table = mtk_vcodec_enc_match,
	413	},
	414	};
	415
	416	module_platform_driver(mtk_vcodec_enc_driver);
	417
	418
	419	MODULE_LICENSE("GPL v2");
	420	MODULE_DESCRIPTION("Mediatek video codec V4L2 encoder driver");