Message-ID: <fae93f20-de34-4ae3-8653-e3a2d86e5935@collabora.com>
Date:   Wed, 24 Nov 2021 16:51:23 +0200
From:   Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     linux-media@...r.kernel.org,
        Robert Beckett <bob.beckett@...labora.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "open list:STAGING SUBSYSTEM" <linux-staging@...ts.linux.dev>,
        open list <linux-kernel@...r.kernel.org>,
        laurent.pinchart@...asonboard.com, hverkuil@...all.nl,
        kernel@...labora.com, dafna3@...il.com,
        kiril.bicevski@...labora.com,
        Nas Chung <nas.chung@...psnmedia.com>,
        lafley.kim@...psnmedia.com, scott.woo@...psnmedia.com,
        olivier.crete@...labora.com, rdunlap@...radead.org
Subject: Re: [PATCH v3 3/6] staging: media: wave5: Add the v4l2 layer



On 12.11.21 14:10, Dan Carpenter wrote:
> My review comments are always going to be about style or error handling.
> I don't know much about v4l or the big picture.  There is a bug
> in wave5_vpu_dec_release().  Otherwise it's just style stuff.
> 
> regards,
> dan carpenter
> 
> On Wed, Nov 10, 2021 at 02:09:07PM +0200, Dafna Hirschfeld wrote:
>> +static int wave5_vpu_load_firmware(struct device *dev, const char *fw_name)
>> +{
>> +	const struct firmware *fw;
>> +	int ret;
>> +	u32 version;
>> +	u32 revision;
>> +	u32 product_id;
>> +
>> +	ret = request_firmware(&fw, fw_name, dev);
>> +	if (ret) {
>> +		dev_err(dev, "request_firmware fail\n");
>> +		return ret;
>> +	}
>> +
>> +	ret = wave5_vpu_init_with_bitcode(dev, (u8 *)fw->data, fw->size);
>> +	if (ret) {
>> +		dev_err(dev, "vpu_init_with_bitcode fail\n");
> 
> release_firmware(fw); before returning.
> 
>> +		return ret;
>> +	}
>> +	release_firmware(fw);
>> +
>> +	ret = wave5_vpu_get_version_info(dev, &version, &revision, &product_id);
>> +	if (ret) {
>> +		dev_err(dev, "vpu_get_version_info fail\n");
>> +		return ret;
>> +	}
>> +
>> +	dev_err(dev, "enum product_id : %08x\n", product_id);
>> +	dev_err(dev, "fw_version : %08x(r%d)\n", version, revision);
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_probe(struct platform_device *pdev)
>> +{
>> +	int ret = 0;
> 
> Delete bogus initializer.
> 
>> +	struct vpu_device *dev;
>> +	struct resource *res = NULL;
> 
> Delete bogus initializer.
> 
>> +	const struct wave5_match_data *match_data;
>> +
>> +	match_data = device_get_match_data(&pdev->dev);
>> +	if (!match_data) {
>> +		dev_err(&pdev->dev, "missing data\n");
>> +		return -EINVAL;
>> +	}
>> +
>> +	/* physical addresses limited to 32 bits */
>> +	dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
>> +	dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
>> +
>> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> +	if (!res) {
>> +		dev_err(&pdev->dev, "unable to get mem resource\n");
>> +		return -EINVAL;
>> +	}
>> +	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
>> +	if (!dev)
>> +		return -ENOMEM;
>> +
>> +	dev->vdb_register.daddr = res->start;
>> +	dev->vdb_register.size = resource_size(res);
>> +	dev->vdb_register.vaddr =
>> +		devm_ioremap(&pdev->dev, dev->vdb_register.daddr, dev->vdb_register.size);
>> +	ida_init(&dev->inst_ida);
>> +
>> +	mutex_init(&dev->dev_lock);
>> +	mutex_init(&dev->hw_lock);
>> +	init_completion(&dev->irq_done);
>> +	dev_set_drvdata(&pdev->dev, dev);
>> +	dev->dev = &pdev->dev;
>> +	dev->product_code = wave5_vdi_read_register(dev, VPU_PRODUCT_CODE_REGISTER);
>> +	ret = wave5_vdi_init(&pdev->dev);
>> +	if (ret < 0) {
>> +		dev_err(&pdev->dev, "failed to init vdi: %d\n", ret);
>> +		return ret;
>> +	}
>> +	dev->product = wave_vpu_get_product_id(dev);
>> +
>> +	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
>> +	if (ret) {
>> +		dev_err(&pdev->dev, "v4l2_device_register fail: %d\n", ret);
>> +		goto err_v4l2_dev_reg;
>> +	}
>> +
>> +	dev->v4l2_m2m_dev = v4l2_m2m_init(&wave5_vpu_m2m_ops);
>> +	if (IS_ERR(dev->v4l2_m2m_dev)) {
>> +		dev_err(&pdev->dev, "v4l2_m2m_init fail: %ld\n", PTR_ERR(dev->v4l2_m2m_dev));
>> +		ret = PTR_ERR(dev->v4l2_m2m_dev);
>> +		goto err_m2m_init;
>> +	}
>> +
>> +	if (match_data->flags & WAVE5_IS_DEC) {
>> +		ret = wave5_vpu_dec_register_device(dev);
>> +		if (ret) {
>> +			dev_err(&pdev->dev, "wave5_vpu_dec_register_device fail: %d\n", ret);
>> +			goto err_dec_reg;
>> +		}
>> +	}
>> +	if (match_data->flags & WAVE5_IS_ENC) {
>> +		ret = wave5_vpu_enc_register_device(dev);
>> +		if (ret) {
>> +			dev_err(&pdev->dev, "wave5_vpu_enc_register_device fail: %d\n", ret);
>> +			goto err_enc_reg;
>> +		}
>> +	}
>> +
>> +	ret = devm_clk_bulk_get_all(&pdev->dev, &dev->clks);
>> +
>> +	/* continue without clock, assume externally managed */
>> +	if (ret < 0) {
>> +		dev_warn(&pdev->dev, "unable to get clocks: %d\n", ret);
>> +		ret = 0;
>> +	}
>> +	dev->num_clks = ret;
>> +
>> +	ret = clk_bulk_prepare_enable(dev->num_clks, dev->clks);
>> +	if (ret) {
>> +		dev_err(&pdev->dev, "failed to enable clocks: %d\n", ret);
>> +		goto err_clk_prep_en;
>> +	}
>> +
>> +	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
>> +	if (!res) {
>> +		dev_err(&pdev->dev, "failed to get irq resource\n");
>> +		ret = -ENXIO;
>> +		goto err_get_irq;
>> +	}
>> +	dev->irq = res->start;
>> +
>> +	if (kfifo_alloc(&dev->irq_status, 16 * sizeof(int), GFP_KERNEL)) {
>> +		dev_err(&pdev->dev, "failed to allocate fifo\n");
>> +		goto err_kfifo_alloc;
>> +	}
>> +
>> +	ret = devm_request_threaded_irq(&pdev->dev, dev->irq, wave5_vpu_irq,
>> +					wave5_vpu_irq_thread, 0, "vpu_irq", dev);
>> +	if (ret) {
>> +		dev_err(&pdev->dev, "fail to register interrupt handler: %d\n", ret);
>> +		goto err_request_irq;
>> +	}
>> +
>> +	ret = wave5_vpu_load_firmware(&pdev->dev, match_data->fw_name);
>> +	if (ret) {
>> +		dev_err(&pdev->dev, "failed to wave5_vpu_load_firmware: %d\n", ret);
>> +		goto err_load_fw;
>> +	}
>> +
>> +	return 0;
>> +
>> +err_load_fw:
>> +err_request_irq:
>> +	kfifo_free(&dev->irq_status);
>> +err_kfifo_alloc:
>> +err_get_irq:
>> +	clk_bulk_disable_unprepare(dev->num_clks, dev->clks);
>> +err_clk_prep_en:
>> +	if (match_data->flags & WAVE5_IS_ENC)
>> +		wave5_vpu_enc_unregister_device(dev);
>> +err_enc_reg:
>> +	if (match_data->flags & WAVE5_IS_DEC)
>> +		wave5_vpu_dec_unregister_device(dev);
>> +err_dec_reg:
>> +	v4l2_m2m_release(dev->v4l2_m2m_dev);
>> +err_m2m_init:
>> +	v4l2_device_unregister(&dev->v4l2_dev);
>> +err_v4l2_dev_reg:
>> +	wave5_vdi_release(&pdev->dev);
>> +
>> +	return ret;
>> +}
>> +
>> +static int wave5_vpu_remove(struct platform_device *pdev)
>> +{
>> +	struct vpu_device *dev = dev_get_drvdata(&pdev->dev);
>> +
>> +	clk_bulk_disable_unprepare(dev->num_clks, dev->clks);
>> +	wave5_vpu_enc_unregister_device(dev);
>> +	wave5_vpu_dec_unregister_device(dev);
>> +	v4l2_m2m_release(dev->v4l2_m2m_dev);
>> +	v4l2_device_unregister(&dev->v4l2_dev);
>> +	kfifo_free(&dev->irq_status);
>> +	wave5_vdi_release(&pdev->dev);
>> +
>> +	return 0;
>> +}
>> +
>> +const struct wave5_match_data wave511_data = {
>> +	.flags = WAVE5_IS_DEC,
>> +	.fw_name = "wave511_dec_fw.bin",
>> +};
>> +
>> +const struct wave5_match_data wave521_data = {
>> +	.flags = WAVE5_IS_ENC,
>> +	.fw_name = "wave521_enc_fw.bin",
>> +};
>> +
>> +const struct wave5_match_data wave521c_data = {
>> +	.flags = WAVE5_IS_ENC | WAVE5_IS_DEC,
>> +	.fw_name = "wave521c_codec_fw.bin",
>> +};
>> +
>> +const struct wave5_match_data default_match_data = {
>> +	.flags = WAVE5_IS_ENC | WAVE5_IS_DEC,
>> +	.fw_name = "chagall.bin",
>> +};
>> +
>> +static const struct of_device_id wave5_dt_ids[] = {
>> +	{ .compatible = "cnm,cm511-vpu", .data = &wave511_data },
>> +	{ .compatible = "cnm,cm517-vpu", .data = &default_match_data },
>> +	{ .compatible = "cnm,cm521-vpu", .data = &wave521_data },
>> +	{ .compatible = "cnm,cm521c-vpu", .data = &wave521c_data },
>> +	{ .compatible = "cnm,cm521c-dual-vpu", .data = &wave521c_data },
>> +	{ .compatible = "cnm,cm521e1-vpu", .data = &default_match_data },
>> +	{ .compatible = "cnm,cm537-vpu", .data = &default_match_data },
>> +	{ /* sentinel */ }
>> +};
>> +MODULE_DEVICE_TABLE(of, wave5_dt_ids);
>> +
>> +static struct platform_driver wave5_vpu_driver = {
>> +	.driver = {
>> +		.name = VPU_PLATFORM_DEVICE_NAME,
>> +		.of_match_table = of_match_ptr(wave5_dt_ids),
>> +		},
>> +	.probe = wave5_vpu_probe,
>> +	.remove = wave5_vpu_remove,
>> +	//.suspend = vpu_suspend,
>> +	//.resume = vpu_resume,
>> +};
>> +
>> +module_platform_driver(wave5_vpu_driver);
>> +MODULE_DESCRIPTION("chips&media VPU V4L2 driver");
>> +MODULE_LICENSE("Dual BSD/GPL");
>> diff --git a/drivers/staging/media/wave5/vpu.h b/drivers/staging/media/wave5/vpu.h
>> new file mode 100644
>> index 000000000000..4caf16c62486
>> --- /dev/null
>> +++ b/drivers/staging/media/wave5/vpu.h
>> @@ -0,0 +1,64 @@
>> +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
>> +/*
>> + * Wave5 series multi-standard codec IP - basic types
>> + *
>> + * Copyright (C) 2021 CHIPS&MEDIA INC
>> + */
>> +#ifndef __VPU_DRV_H__
>> +#define __VPU_DRV_H__
>> +
>> +#include <media/v4l2-ctrls.h>
>> +#include <media/v4l2-ioctl.h>
>> +#include <media/v4l2-event.h>
>> +#include <media/v4l2-fh.h>
>> +#include <media/videobuf2-v4l2.h>
>> +#include <media/videobuf2-dma-contig.h>
>> +#include <media/videobuf2-vmalloc.h>
>> +#include "vpuconfig.h"
>> +#include "vpuapi.h"
>> +
>> +#define VPU_BUF_SYNC_TO_DEVICE 0
>> +#define VPU_BUF_SYNC_FROM_DEVICE 1
>> +
>> +struct vpu_buffer {
>> +	struct v4l2_m2m_buffer v4l2_m2m_buf;
>> +	bool                   consumed;
>> +};
>> +
>> +enum vpu_fmt_type {
>> +	VPU_FMT_TYPE_CODEC = 0,
>> +	VPU_FMT_TYPE_RAW   = 1
>> +};
>> +
>> +struct vpu_format {
>> +	unsigned int v4l2_pix_fmt;
>> +	unsigned int max_width;
>> +	unsigned int min_width;
>> +	unsigned int max_height;
>> +	unsigned int min_height;
>> +};
>> +
>> +static inline struct vpu_instance *wave5_to_vpu_inst(struct v4l2_fh *vfh)
>> +{
>> +	return container_of(vfh, struct vpu_instance, v4l2_fh);
>> +}
>> +
>> +static inline struct vpu_instance *wave5_ctrl_to_vpu_inst(struct v4l2_ctrl *vctrl)
>> +{
>> +	return container_of(vctrl->handler, struct vpu_instance, v4l2_ctrl_hdl);
>> +}
>> +
>> +static inline struct vpu_buffer *wave5_to_vpu_buf(struct vb2_v4l2_buffer *vbuf)
>> +{
>> +	return container_of(vbuf, struct vpu_buffer, v4l2_m2m_buf.vb);
>> +}
>> +
>> +int wave5_vpu_wait_interrupt(struct vpu_instance *inst, unsigned int timeout);
>> +
>> +int  wave5_vpu_dec_register_device(struct vpu_device *dev);
>> +void wave5_vpu_dec_unregister_device(struct vpu_device *dev);
>> +int  wave5_vpu_enc_register_device(struct vpu_device *dev);
>> +void wave5_vpu_enc_unregister_device(struct vpu_device *dev);
>> +inline bool wave5_vpu_both_queues_are_streaming(struct vpu_instance *inst);
>> +#endif
>> +
>> diff --git a/drivers/staging/media/wave5/vpu_dec.c b/drivers/staging/media/wave5/vpu_dec.c
>> new file mode 100644
>> index 000000000000..613a337cc0fc
>> --- /dev/null
>> +++ b/drivers/staging/media/wave5/vpu_dec.c
>> @@ -0,0 +1,1397 @@
>> +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
>> +/*
>> + * Wave5 series multi-standard codec IP - decoder interface
>> + *
>> + * Copyright (C) 2021 CHIPS&MEDIA INC
>> + */
>> +#include "vpu.h"
>> +#define VPU_DEC_DEV_NAME "C&M VPU decoder"
>> +#define VPU_DEC_DRV_NAME "vpu-dec"
>> +#define V4L2_CID_VPU_THUMBNAIL_MODE (V4L2_CID_USER_BASE + 0x1001)
>> +
>> +static const struct vpu_format wave5_vpu_dec_fmt_list[2][6] = {
>> +	[VPU_FMT_TYPE_CODEC] = {
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_HEVC,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_H264,
>> +			.max_width = 8192,
>> +			.min_width = 32,
>> +			.max_height = 8192,
>> +			.min_height = 32,
>> +		},
>> +	},
>> +	[VPU_FMT_TYPE_RAW] = {
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_YUV420,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV12,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV21,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_YUV420M,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV12M,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV21M,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +	}
>> +};
>> +
>> +static enum wave_std wave5_to_vpu_codstd(unsigned int v4l2_pix_fmt)
>> +{
>> +	switch (v4l2_pix_fmt) {
>> +	case V4L2_PIX_FMT_H264:
>> +		return W_AVC_DEC;
>> +	case V4L2_PIX_FMT_HEVC:
>> +		return W_HEVC_DEC;
>> +	default:
>> +		return STD_UNKNOWN;
>> +	}
>> +}
>> +
>> +static const struct vpu_format *wave5_get_vpu_fmt(unsigned int v4l2_pix_fmt, enum vpu_fmt_type type)
>> +{
>> +	unsigned int index;
>> +
>> +	for (index = 0; index < ARRAY_SIZE(wave5_vpu_dec_fmt_list[type]); index++) {
>> +		if (wave5_vpu_dec_fmt_list[type][index].v4l2_pix_fmt == v4l2_pix_fmt)
>> +			return &wave5_vpu_dec_fmt_list[type][index];
>> +	}
>> +
>> +	return NULL;
>> +}
>> +
>> +static const struct vpu_format *wave5_find_vpu_fmt_by_idx(unsigned int idx, enum vpu_fmt_type type)
>> +{
>> +	if (idx >= ARRAY_SIZE(wave5_vpu_dec_fmt_list[type]))
>> +		return NULL;
>> +
>> +	if (!wave5_vpu_dec_fmt_list[type][idx].v4l2_pix_fmt)
>> +		return NULL;
>> +
>> +	return &wave5_vpu_dec_fmt_list[type][idx];
>> +}
>> +
>> +static void wave5_handle_bitstream_buffer(struct vpu_instance *inst)
>> +{
>> +	struct v4l2_m2m_buffer *v4l2_m2m_buf = NULL;
>> +
>> +	unsigned long flags;
>> +
>> +	spin_lock_irqsave(&inst->bitstream_lock, flags);
>> +
>> +	v4l2_m2m_for_each_src_buf(inst->v4l2_fh.m2m_ctx, v4l2_m2m_buf) {
>> +		int ret;
>> +		struct vb2_v4l2_buffer *vbuf = &v4l2_m2m_buf->vb;
>> +		struct vpu_buffer *vpu_buf = wave5_to_vpu_buf(vbuf);
>> +		u32 src_size = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
>> +		void *src_buf = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
>> +		dma_addr_t bs_rd_ptr = 0;
>> +		dma_addr_t bs_wr_ptr = 0;
>> +		u32 bs_remain_size = 0;
>> +		size_t offset;
>> +
>> +		if (vpu_buf->consumed) {
>> +			dev_dbg(inst->dev->dev, "already consumed buffer\n");
>> +			continue;
>> +		}
>> +
>> +		wave5_vpu_dec_get_bitstream_buffer(inst, &bs_rd_ptr, &bs_wr_ptr, &bs_remain_size);
>> +
>> +		if (bs_remain_size < src_size) {
>> +			dev_dbg(inst->dev->dev, "fill next time : remained size < source size.\n");
>> +			continue;
>> +		}
>> +
>> +		offset = bs_wr_ptr - inst->bitstream_vbuf.daddr;
>> +		if (bs_wr_ptr + src_size > inst->bitstream_vbuf.daddr + inst->bitstream_vbuf.size) {
>> +			int size;
>> +
>> +			size = inst->bitstream_vbuf.daddr + inst->bitstream_vbuf.size - bs_wr_ptr;
>> +			wave5_vdi_write_memory(inst->dev, &inst->bitstream_vbuf, offset, src_buf,
>> +					       size, VDI_128BIT_LITTLE_ENDIAN);
>> +			wave5_vdi_write_memory(inst->dev, &inst->bitstream_vbuf, 0,
>> +					       src_buf + size, src_size - size,
>> +					       VDI_128BIT_LITTLE_ENDIAN);
>> +		} else {
>> +			wave5_vdi_write_memory(inst->dev, &inst->bitstream_vbuf, offset, src_buf,
>> +					       src_size, VDI_128BIT_LITTLE_ENDIAN);
>> +		}
>> +
>> +		ret = wave5_vpu_dec_update_bitstream_buffer(inst, src_size);
>> +		if (ret) {
>> +			dev_dbg(inst->dev->dev, "vpu_dec_update_bitstream_buffer fail: %d\n", ret);
>> +			continue;
>> +		}
>> +
>> +		vpu_buf->consumed = TRUE;
>> +
>> +		if (inst->state == VPU_INST_STATE_WAIT_BUF)
>> +			inst->state = VPU_INST_STATE_PIC_RUN;
>> +	}
>> +
>> +	spin_unlock_irqrestore(&inst->bitstream_lock, flags);
>> +}
>> +
>> +static void wave5_handle_src_buffer(struct vpu_instance *inst)
>> +{
>> +	struct vb2_v4l2_buffer *src_buf;
>> +
>> +	unsigned long flags;
>> +
>> +	spin_lock_irqsave(&inst->bitstream_lock, flags);
>> +
>> +	src_buf = v4l2_m2m_next_src_buf(inst->v4l2_fh.m2m_ctx);
>> +	if (src_buf) {
>> +		struct vpu_buffer *vpu_buf = wave5_to_vpu_buf(src_buf);
>> +
>> +		if (vpu_buf->consumed) {
>> +			u32 remain_num = 0;
>> +
>> +			dev_dbg(inst->dev->dev, "already consumed buffer\n");
>> +			remain_num = v4l2_m2m_num_src_bufs_ready(inst->v4l2_fh.m2m_ctx);
>> +			dev_dbg(inst->dev->dev, "remain buffer : %d\n", remain_num);
>> +			if (remain_num > 1) {
>> +				src_buf = v4l2_m2m_src_buf_remove(inst->v4l2_fh.m2m_ctx);
>> +				inst->timestamp = src_buf->vb2_buf.timestamp;
>> +				v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
>> +			}
>> +		}
>> +	}
>> +	spin_unlock_irqrestore(&inst->bitstream_lock, flags);
>> +}
>> +
>> +static void wave5_update_pix_fmt(struct v4l2_pix_format_mplane *pix_mp, unsigned int width,
>> +				 unsigned int height)
>> +{
>> +	switch (pix_mp->pixelformat) {
>> +	case V4L2_PIX_FMT_YUV420:
>> +	case V4L2_PIX_FMT_NV12:
>> +	case V4L2_PIX_FMT_NV21:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[0].sizeimage = width * height * 3 / 2;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		break;
>> +	case V4L2_PIX_FMT_YUV420M:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[0].sizeimage = width * height;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		pix_mp->plane_fmt[1].bytesperline = round_up(width, 32) / 2;
>> +		pix_mp->plane_fmt[1].sizeimage = width * height / 4;
>> +		memset(&pix_mp->plane_fmt[1].reserved, 0, sizeof(pix_mp->plane_fmt[1].reserved));
>> +		pix_mp->plane_fmt[2].bytesperline = round_up(width, 32) / 2;
>> +		pix_mp->plane_fmt[2].sizeimage = width * height / 4;
>> +		memset(&pix_mp->plane_fmt[2].reserved, 0, sizeof(pix_mp->plane_fmt[2].reserved));
>> +		break;
>> +	case V4L2_PIX_FMT_NV12M:
>> +	case V4L2_PIX_FMT_NV21M:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[0].sizeimage = width * height;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		pix_mp->plane_fmt[1].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[1].sizeimage = width * height / 2;
>> +		memset(&pix_mp->plane_fmt[1].reserved, 0, sizeof(pix_mp->plane_fmt[1].reserved));
>> +		break;
>> +	default:
>> +		pix_mp->width = width;
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = 0;
>> +		pix_mp->plane_fmt[0].sizeimage = width * height / 2;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		break;
>> +	}
>> +}
>> +
>> +static void wave5_vpu_dec_start_decode(struct vpu_instance *inst)
>> +{
>> +	struct dec_param pic_param;
>> +	struct queue_status_info q_status;
>> +	u32 remain_cmd_q, max_cmd_q = 0;
>> +
>> +	memset(&pic_param, 0, sizeof(struct dec_param));
>> +
>> +	wave5_vpu_dec_give_command(inst, DEC_GET_QUEUE_STATUS, &q_status);
>> +	dev_dbg(inst->dev->dev, "min_src_buf_cnt :%d default : %d | qcount : %d | report_q : %d\n",
>> +		inst->min_src_frame_buf_count, COMMAND_QUEUE_DEPTH, q_status.instance_queue_count,
>> +		q_status.report_queue_count);
>> +
>> +	max_cmd_q = (inst->min_src_frame_buf_count < COMMAND_QUEUE_DEPTH) ?
>> +		inst->min_src_frame_buf_count : COMMAND_QUEUE_DEPTH;
>> +	remain_cmd_q = max_cmd_q - q_status.instance_queue_count;
>> +
>> +	while (remain_cmd_q) {
>> +		int ret;
> 
> If you're going to have a ret variable, just declare it at the start of
> the function.
> 
> 
>> +		u32 fail_res = 0;
>> +
>> +		ret = wave5_vpu_dec_start_one_frame(inst, &pic_param, &fail_res);
>> +		if (ret) {
>> +			if (fail_res != WAVE5_SYSERR_QUEUEING_FAIL) {
>> +				struct vb2_v4l2_buffer *src_buf =
>> +					v4l2_m2m_src_buf_remove(inst->v4l2_fh.m2m_ctx);
>> +
>> +				inst->state = VPU_INST_STATE_STOP;
>> +				v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
>> +				break;
>> +			}
>> +		} else {
>> +			dev_dbg(inst->dev->dev, "vpu_dec_start_one_frame success %d\n", ret);
> 
> This is a pointless debug statement.  ret is zero.
> 
>> +		}
>> +
>> +		remain_cmd_q--;
>> +	}
>> +}
>> +
>> +static void wave5_vpu_dec_stop_decode(struct vpu_instance *inst)
>> +{
>> +	u32 i;
>> +	unsigned long flags;
>> +
>> +	inst->state = VPU_INST_STATE_STOP;
>> +
>> +	spin_lock_irqsave(&inst->bitstream_lock, flags);
>> +	wave5_vpu_dec_update_bitstream_buffer(inst, 0);
>> +	spin_unlock_irqrestore(&inst->bitstream_lock, flags);
>> +
>> +	for (i = 0; i < inst->min_dst_frame_buf_count; i++) {
>> +		wave5_vpu_dec_clr_disp_flag(inst, i);
>> +		dev_dbg(inst->dev->dev, "clear display flag : %d\n", i);
> 
> Just use ftrace for this.  Delete the debug statement.
> 
> 
>> +	}
>> +}
>> +
>> +static void wave5_vpu_dec_finish_decode(struct vpu_instance *inst)
>> +{
>> +	struct dec_output_info dec_output_info;
>> +	int ret_code;
>> +	int irq_status;
>> +
>> +	if (kfifo_out(&inst->dev->irq_status, &irq_status, sizeof(int)))
>> +		wave5_vpu_clear_interrupt_ex(inst, irq_status);
>> +
>> +	if (irq_status & (1 << INT_WAVE5_BSBUF_EMPTY)) {
>> +		dev_dbg(inst->dev->dev, "bitstream EMPTY!!!!\n");
>> +		inst->state = VPU_INST_STATE_WAIT_BUF;
>> +		wave5_handle_src_buffer(inst);
>> +		wave5_handle_bitstream_buffer(inst);
>> +	}
>> +
>> +	if (!(irq_status & (1 << INT_WAVE5_DEC_PIC)))
>> +		return;
>> +	ret_code = wave5_vpu_dec_get_output_info(inst, &dec_output_info);
>> +	if (ret_code) {
>> +		v4l2_m2m_job_finish(inst->dev->v4l2_m2m_dev, inst->v4l2_fh.m2m_ctx);
>> +		return;
>> +	}
>> +	if (inst->state == VPU_INST_STATE_STOP) {
>> +		struct queue_status_info q_status;
>> +
>> +		if (dec_output_info.index_frame_display >= 0)
>> +			wave5_vpu_dec_clr_disp_flag(inst, dec_output_info.index_frame_display);
>> +
>> +		wave5_vpu_dec_give_command(inst, DEC_GET_QUEUE_STATUS, &q_status);
>> +
>> +		if (!(q_status.report_queue_count + q_status.instance_queue_count))
>> +			v4l2_m2m_job_finish(inst->dev->v4l2_m2m_dev, inst->v4l2_fh.m2m_ctx);
>> +	} else if (dec_output_info.index_frame_decoded == DECODED_IDX_FLAG_NO_FB &&
>> +			dec_output_info.index_frame_display == DISPLAY_IDX_FLAG_NO_FB) {
>> +		dev_dbg(inst->dev->dev, "no more frame buffer\n");
>> +		inst->state = VPU_INST_STATE_WAIT_BUF;
>> +	} else {
>> +		wave5_handle_src_buffer(inst);
>> +
>> +		if (dec_output_info.index_frame_display >= 0) {
>> +			struct vb2_v4l2_buffer *dst_buf =
>> +				v4l2_m2m_dst_buf_remove_by_idx(inst->v4l2_fh.m2m_ctx,
>> +							       dec_output_info.index_frame_display);
>> +			int stride = dec_output_info.disp_frame.stride;
>> +			int height = dec_output_info.disp_pic_height;
>> +
>> +			if (inst->dst_fmt.num_planes == 1) {
>> +				vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
>> +						      (stride * height * 3 / 2));
>> +			} else if (inst->dst_fmt.num_planes == 2) {
>> +				vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
>> +						      (stride * height));
>> +				vb2_set_plane_payload(&dst_buf->vb2_buf, 1,
>> +						      ((stride / 2) * height));
>> +			} else if (inst->dst_fmt.num_planes == 3) {
>> +				vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
>> +						      (stride * height));
>> +				vb2_set_plane_payload(&dst_buf->vb2_buf, 1,
>> +						      ((stride / 2) * (height / 2)));
>> +				vb2_set_plane_payload(&dst_buf->vb2_buf, 2,
>> +						      ((stride / 2) * (height / 2)));
>> +			}
>> +
>> +			dst_buf->vb2_buf.timestamp = inst->timestamp;
>> +			dst_buf->field = V4L2_FIELD_NONE;
>> +			v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
>> +		} else if (dec_output_info.index_frame_display == DISPLAY_IDX_FLAG_SEQ_END) {
>> +			static const struct v4l2_event vpu_event_eos = {
>> +				.type = V4L2_EVENT_EOS
>> +			};
>> +
>> +			dev_dbg(inst->dev->dev, "stream end\n");
>> +			inst->state = VPU_INST_STATE_STOP;
>> +			v4l2_event_queue_fh(&inst->v4l2_fh, &vpu_event_eos);
>> +		}
>> +
>> +		if (!kfifo_len(&inst->dev->irq_status))
>> +			v4l2_m2m_job_finish(inst->dev->v4l2_m2m_dev,
>> +					    inst->v4l2_fh.m2m_ctx);
>> +	}
>> +}
>> +
>> +static int wave5_vpu_dec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	strscpy(cap->driver, VPU_DEC_DRV_NAME, sizeof(cap->driver));
>> +	strscpy(cap->card, VPU_DEC_DRV_NAME, sizeof(cap->card));
>> +	strscpy(cap->bus_info, "platform:" VPU_DEC_DRV_NAME, sizeof(cap->bus_info));
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_enum_framesizes(struct file *f, void *fh, struct v4l2_frmsizeenum *fsize)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	if (fsize->index)
>> +		return -EINVAL;
>> +
>> +	vpu_fmt = wave5_get_vpu_fmt(fsize->pixel_format, VPU_FMT_TYPE_CODEC);
>> +	if (!vpu_fmt) {
>> +		vpu_fmt = wave5_get_vpu_fmt(fsize->pixel_format, VPU_FMT_TYPE_RAW);
>> +		if (!vpu_fmt)
>> +			return -EINVAL;
>> +	}
>> +
>> +	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
>> +	fsize->stepwise.min_width = vpu_fmt->min_width;
>> +	fsize->stepwise.max_width = vpu_fmt->max_width;
>> +	fsize->stepwise.step_width = 1;
>> +	fsize->stepwise.min_height = vpu_fmt->min_height;
>> +	fsize->stepwise.max_height = vpu_fmt->max_height;
>> +	fsize->stepwise.step_height = 1;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_enum_fmt_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "index : %d\n", f->index);
> 
> Do we need this, really?
> 
>> +
>> +	vpu_fmt = wave5_find_vpu_fmt_by_idx(f->index, VPU_FMT_TYPE_RAW);
>> +	if (!vpu_fmt)
>> +		return -EINVAL;
>> +
>> +	f->pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +	f->flags = 0;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_try_fmt_cap(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "4cc %d width %d height %d nm planes %d colorspace %d field : %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.colorspace, f->fmt.pix_mp.field);
>> +
>> +	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
>> +		return -EINVAL;
>> +
>> +	vpu_fmt = wave5_get_vpu_fmt(f->fmt.pix_mp.pixelformat, VPU_FMT_TYPE_RAW);
>> +	if (!vpu_fmt) {
>> +		f->fmt.pix_mp.pixelformat = inst->dst_fmt.pixelformat;
>> +		f->fmt.pix_mp.num_planes = inst->dst_fmt.num_planes;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, inst->dst_fmt.width, inst->dst_fmt.height);
>> +	} else {
>> +		int width = clamp(f->fmt.pix_mp.width, vpu_fmt->min_width, vpu_fmt->max_width);
>> +		int height = clamp(f->fmt.pix_mp.height, vpu_fmt->min_height, vpu_fmt->max_height);
>> +		const struct v4l2_format_info *info = v4l2_format_info(vpu_fmt->v4l2_pix_fmt);
>> +
>> +		f->fmt.pix_mp.pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +		f->fmt.pix_mp.num_planes = info->mem_planes;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, width, height);
>> +	}
>> +
>> +	f->fmt.pix_mp.flags = 0;
>> +	f->fmt.pix_mp.field = V4L2_FIELD_NONE;
>> +	f->fmt.pix_mp.colorspace = inst->colorspace;
>> +	f->fmt.pix_mp.ycbcr_enc = inst->ycbcr_enc;
>> +	f->fmt.pix_mp.hsv_enc = inst->hsv_enc;
>> +	f->fmt.pix_mp.quantization = inst->quantization;
>> +	f->fmt.pix_mp.xfer_func = inst->xfer_func;
>> +	memset(&f->fmt.pix_mp.reserved, 0, sizeof(f->fmt.pix_mp.reserved));
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_s_fmt_cap(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i, ret;
>> +
>> +	dev_dbg(inst->dev->dev, "4cc %d width %d height %d num_planes %d colorspace %d field %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.colorspace, f->fmt.pix_mp.field);
>> +
>> +	ret = wave5_vpu_dec_try_fmt_cap(file, fh, f);
>> +	if (ret)
>> +		return ret;
>> +
>> +	inst->dst_fmt.width = f->fmt.pix_mp.width;
>> +	inst->dst_fmt.height = f->fmt.pix_mp.height;
>> +	inst->dst_fmt.pixelformat = f->fmt.pix_mp.pixelformat;
>> +	inst->dst_fmt.field = f->fmt.pix_mp.field;
>> +	inst->dst_fmt.flags = f->fmt.pix_mp.flags;
>> +	inst->dst_fmt.num_planes = f->fmt.pix_mp.num_planes;
>> +	for (i = 0; i < inst->dst_fmt.num_planes; i++) {
>> +		inst->dst_fmt.plane_fmt[i].bytesperline = f->fmt.pix_mp.plane_fmt[i].bytesperline;
>> +		inst->dst_fmt.plane_fmt[i].sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_g_fmt_cap(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	f->fmt.pix_mp.width = inst->dst_fmt.width;
>> +	f->fmt.pix_mp.height = inst->dst_fmt.height;
>> +	f->fmt.pix_mp.pixelformat = inst->dst_fmt.pixelformat;
>> +	f->fmt.pix_mp.field = inst->dst_fmt.field;
>> +	f->fmt.pix_mp.flags = inst->dst_fmt.flags;
>> +	f->fmt.pix_mp.num_planes = inst->dst_fmt.num_planes;
>> +	for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
>> +		f->fmt.pix_mp.plane_fmt[i].bytesperline = inst->dst_fmt.plane_fmt[i].bytesperline;
>> +		f->fmt.pix_mp.plane_fmt[i].sizeimage = inst->dst_fmt.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	f->fmt.pix_mp.colorspace = inst->colorspace;
>> +	f->fmt.pix_mp.ycbcr_enc = inst->ycbcr_enc;
>> +	f->fmt.pix_mp.hsv_enc = inst->hsv_enc;
>> +	f->fmt.pix_mp.quantization = inst->quantization;
>> +	f->fmt.pix_mp.xfer_func = inst->xfer_func;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_enum_fmt_out(struct file *file, void *fh, struct v4l2_fmtdesc *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "index : %d\n", f->index);
>> +
>> +	vpu_fmt = wave5_find_vpu_fmt_by_idx(f->index, VPU_FMT_TYPE_CODEC);
>> +	if (!vpu_fmt)
>> +		return -EINVAL;
>> +
>> +	f->pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +	f->flags = 0;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_try_fmt_out(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "4cc %d width %d height %d num_planes %d colorspace %d field %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.colorspace, f->fmt.pix_mp.field);
>> +
>> +	if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> +		return -EINVAL;
>> +
>> +	vpu_fmt = wave5_get_vpu_fmt(f->fmt.pix_mp.pixelformat, VPU_FMT_TYPE_CODEC);
>> +	if (!vpu_fmt) {
>> +		f->fmt.pix_mp.pixelformat = inst->src_fmt.pixelformat;
>> +		f->fmt.pix_mp.num_planes = inst->src_fmt.num_planes;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, inst->src_fmt.width, inst->src_fmt.height);
>> +	} else {
>> +		int width = clamp(f->fmt.pix_mp.width, vpu_fmt->min_width, vpu_fmt->max_width);
>> +		int height = clamp(f->fmt.pix_mp.height, vpu_fmt->min_height, vpu_fmt->max_height);
>> +
>> +		f->fmt.pix_mp.pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +		f->fmt.pix_mp.num_planes = 1;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, width, height);
>> +	}
>> +
>> +	f->fmt.pix_mp.flags = 0;
>> +	f->fmt.pix_mp.field = V4L2_FIELD_NONE;
>> +	memset(&f->fmt.pix_mp.reserved, 0, sizeof(f->fmt.pix_mp.reserved));
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_s_fmt_out(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i, ret;
>> +
>> +	dev_dbg(inst->dev->dev, "pixelformat %d width %d height %d num_planes %d field : %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.field);
>> +
>> +	ret = wave5_vpu_dec_try_fmt_out(file, fh, f);
>> +	if (ret)
>> +		return ret;
>> +
>> +	inst->src_fmt.width = f->fmt.pix_mp.width;
>> +	inst->src_fmt.height = f->fmt.pix_mp.height;
>> +	inst->src_fmt.pixelformat = f->fmt.pix_mp.pixelformat;
>> +	inst->src_fmt.field = f->fmt.pix_mp.field;
>> +	inst->src_fmt.flags = f->fmt.pix_mp.flags;
>> +	inst->src_fmt.num_planes = f->fmt.pix_mp.num_planes;
>> +	for (i = 0; i < inst->src_fmt.num_planes; i++) {
>> +		inst->src_fmt.plane_fmt[i].bytesperline = f->fmt.pix_mp.plane_fmt[i].bytesperline;
>> +		inst->src_fmt.plane_fmt[i].sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	inst->colorspace = f->fmt.pix_mp.colorspace;
>> +	inst->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
>> +	inst->hsv_enc = f->fmt.pix_mp.hsv_enc;
>> +	inst->quantization = f->fmt.pix_mp.quantization;
>> +	inst->xfer_func = f->fmt.pix_mp.xfer_func;
>> +
>> +	wave5_update_pix_fmt(&inst->dst_fmt, f->fmt.pix_mp.width, f->fmt.pix_mp.height);
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_g_fmt_out(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	f->fmt.pix_mp.width = inst->src_fmt.width;
>> +	f->fmt.pix_mp.height = inst->src_fmt.height;
>> +	f->fmt.pix_mp.pixelformat = inst->src_fmt.pixelformat;
>> +	f->fmt.pix_mp.field = inst->src_fmt.field;
>> +	f->fmt.pix_mp.flags = inst->src_fmt.flags;
>> +	f->fmt.pix_mp.num_planes = inst->src_fmt.num_planes;
>> +	for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
>> +		f->fmt.pix_mp.plane_fmt[i].bytesperline = inst->src_fmt.plane_fmt[i].bytesperline;
>> +		f->fmt.pix_mp.plane_fmt[i].sizeimage = inst->src_fmt.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	f->fmt.pix_mp.colorspace = inst->colorspace;
>> +	f->fmt.pix_mp.ycbcr_enc = inst->ycbcr_enc;
>> +	f->fmt.pix_mp.hsv_enc = inst->hsv_enc;
>> +	f->fmt.pix_mp.quantization = inst->quantization;
>> +	f->fmt.pix_mp.xfer_func = inst->xfer_func;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d | target : %d\n", s->type, s->target);
>> +
>> +	if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
> 
> Reverse this if statement.  Pull the code in a tab.
> 
>> +		switch (s->target) {
>> +		case V4L2_SEL_TGT_COMPOSE_BOUNDS:
>> +		case V4L2_SEL_TGT_COMPOSE_PADDED:
>> +			s->r.left = 0;
>> +			s->r.top = 0;
>> +			s->r.width = inst->dst_fmt.width;
>> +			s->r.height = inst->dst_fmt.height;
>> +			break;
>> +		case V4L2_SEL_TGT_COMPOSE:
>> +		case V4L2_SEL_TGT_COMPOSE_DEFAULT:
>> +			s->r.left = 0;
>> +			s->r.top = 0;
>> +			s->r.width = inst->src_fmt.width;
>> +			s->r.height = inst->src_fmt.height;
>> +			break;
>> +		default:
>> +			return -EINVAL;
>> +		}
>> +	} else {
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d | target : %d\n", s->type, s->target);
>> +
>> +	if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
> 
> Reverse this if statement.
> 
>> +		switch (s->target) {
>> +		case V4L2_SEL_TGT_COMPOSE:
>> +			dev_dbg(inst->dev->dev, "V4L2_SEL_TGT_COMPOSE width : %d | height : %d\n",
>> +				s->r.width, s->r.height);
>> +			inst->dst_fmt.width = s->r.width;
>> +			inst->dst_fmt.height = s->r.height;
>> +			break;
>> +		default:
>> +			return -EINVAL;
>> +		}
>> +	} else {
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_try_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *dc)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "decoder command : %d\n", dc->cmd);
>> +
>> +	if (dc->cmd != V4L2_DEC_CMD_STOP && dc->cmd != V4L2_DEC_CMD_START)
>> +		return -EINVAL;
>> +
>> +	dc->flags = 0;
>> +
>> +	if (dc->cmd == V4L2_DEC_CMD_STOP) {
>> +		dc->stop.pts = 0;
>> +	} else if (dc->cmd == V4L2_DEC_CMD_START) {
>> +		dc->start.speed = 0;
>> +		dc->start.format = V4L2_DEC_START_FMT_NONE;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *dc)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int ret;
>> +
>> +	dev_dbg(inst->dev->dev, "decoder command : %d\n", dc->cmd);
>> +
>> +	ret = wave5_vpu_dec_try_decoder_cmd(file, fh, dc);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	if (!wave5_vpu_both_queues_are_streaming(inst))
>> +		return 0;
>> +
>> +	switch (dc->cmd) {
>> +	case V4L2_DEC_CMD_STOP:
>> +		wave5_vpu_dec_stop_decode(inst);
>> +		break;
>> +	case V4L2_DEC_CMD_START:
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_subscribe_event(struct v4l2_fh *fh,
>> +					 const struct v4l2_event_subscription *sub)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d id : %d | flags : %d\n", sub->type, sub->id, sub->flags);
>> +
>> +	switch (sub->type) {
>> +	case V4L2_EVENT_EOS:
>> +		return v4l2_event_subscribe(fh, sub, 0, NULL);
>> +	case V4L2_EVENT_SOURCE_CHANGE:
>> +		return v4l2_src_change_event_subscribe(fh, sub);
>> +	case V4L2_EVENT_CTRL:
>> +		return v4l2_ctrl_subscribe_event(fh, sub);
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +}
>> +
>> +static const struct v4l2_ioctl_ops wave5_vpu_dec_ioctl_ops = {
>> +	.vidioc_querycap = wave5_vpu_dec_querycap,
>> +	.vidioc_enum_framesizes = wave5_vpu_dec_enum_framesizes,
>> +
>> +	.vidioc_enum_fmt_vid_cap	= wave5_vpu_dec_enum_fmt_cap,
>> +	.vidioc_s_fmt_vid_cap_mplane = wave5_vpu_dec_s_fmt_cap,
>> +	.vidioc_g_fmt_vid_cap_mplane = wave5_vpu_dec_g_fmt_cap,
>> +	.vidioc_try_fmt_vid_cap_mplane = wave5_vpu_dec_try_fmt_cap,
>> +
>> +	.vidioc_enum_fmt_vid_out	= wave5_vpu_dec_enum_fmt_out,
>> +	.vidioc_s_fmt_vid_out_mplane = wave5_vpu_dec_s_fmt_out,
>> +	.vidioc_g_fmt_vid_out_mplane = wave5_vpu_dec_g_fmt_out,
>> +	.vidioc_try_fmt_vid_out_mplane = wave5_vpu_dec_try_fmt_out,
>> +
>> +	.vidioc_g_selection = wave5_vpu_dec_g_selection,
>> +	.vidioc_s_selection = wave5_vpu_dec_s_selection,
>> +
>> +	.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
>> +	.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
>> +	.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
>> +	.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
>> +	.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
>> +	.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
>> +	.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
>> +	.vidioc_streamon = v4l2_m2m_ioctl_streamon,
>> +	.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>> +
>> +	.vidioc_try_decoder_cmd = wave5_vpu_dec_try_decoder_cmd,
>> +	.vidioc_decoder_cmd = wave5_vpu_dec_decoder_cmd,
>> +
>> +	.vidioc_subscribe_event = wave5_vpu_dec_subscribe_event,
>> +	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
>> +};
>> +
>> +static int wave5_vpu_dec_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> +	struct vpu_instance *inst = wave5_ctrl_to_vpu_inst(ctrl);
>> +
>> +	dev_dbg(inst->dev->dev, "name : %s\n", ctrl->name);
>> +
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
>> +		if (inst->state != VPU_INST_STATE_NONE && inst->state != VPU_INST_STATE_OPEN)
>> +			ctrl->val = inst->min_dst_frame_buf_count;
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	dev_dbg(inst->dev->dev, "value : %d\n", ctrl->val);
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_s_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> +	struct vpu_instance *inst = wave5_ctrl_to_vpu_inst(ctrl);
>> +
>> +	dev_dbg(inst->dev->dev, "name : %s | value : %d\n", ctrl->name, ctrl->val);
>> +
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_VPU_THUMBNAIL_MODE:
>> +		inst->thumbnail_mode = ctrl->val;
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct v4l2_ctrl_ops wave5_vpu_dec_ctrl_ops = {
>> +	.g_volatile_ctrl = wave5_vpu_dec_g_volatile_ctrl,
>> +	.s_ctrl = wave5_vpu_dec_s_ctrl,
>> +};
>> +
>> +static const struct v4l2_ctrl_config wave5_vpu_thumbnail_mode = {
>> +	.ops = &wave5_vpu_dec_ctrl_ops,
>> +	.id = V4L2_CID_VPU_THUMBNAIL_MODE,
>> +	.name = "thumbnail mode",
>> +	.type = V4L2_CTRL_TYPE_BOOLEAN,
>> +	.def = 0,
>> +	.min = 0,
>> +	.max = 1,
>> +	.step = 1,
>> +	.flags = V4L2_CTRL_FLAG_WRITE_ONLY,
>> +};
>> +
>> +static void wave5_set_default_dec_openparam(struct dec_open_param *open_param)
>> +{
>> +	open_param->bitstream_mode = BS_MODE_INTERRUPT;
>> +	open_param->stream_endian = VPU_STREAM_ENDIAN;
>> +	open_param->frame_endian = VPU_FRAME_ENDIAN;
>> +	open_param->cbcr_interleave = FALSE;
>> +	open_param->nv21 = FALSE;
>> +}
>> +
>> +static int wave5_vpu_dec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
>> +				     unsigned int *num_planes, unsigned int sizes[],
>> +			 struct device *alloc_devs[])
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(q);
>> +	struct v4l2_pix_format_mplane inst_format =
>> +		(q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ? inst->src_fmt : inst->dst_fmt;
>> +	unsigned int i;
>> +
>> +	dev_dbg(inst->dev->dev, "num_buffers : %d | num_planes : %d | type : %d\n", *num_buffers,
>> +		*num_planes, q->type);
>> +
>> +	if (*num_planes) {
>> +		if (inst_format.num_planes != *num_planes)
>> +			return -EINVAL;
>> +
>> +		for (i = 0; i < *num_planes; i++) {
>> +			if (sizes[i] < inst_format.plane_fmt[i].sizeimage)
>> +				return -EINVAL;
>> +		}
>> +	} else {
>> +		*num_planes = inst_format.num_planes;
>> +
>> +		if (*num_planes == 1) {
>> +			sizes[0] = inst_format.width * inst_format.height * 3 / 2;
>> +			if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> +				sizes[0] = inst_format.plane_fmt[0].sizeimage;
>> +			dev_dbg(inst->dev->dev, "size[0] : %d\n", sizes[0]);
>> +		} else if (*num_planes == 2) {
>> +			sizes[0] = inst_format.width * inst_format.height;
>> +			sizes[1] = inst_format.width * inst_format.height / 2;
>> +			dev_dbg(inst->dev->dev, "size[0] :%d | size[1] : %d\n", sizes[0], sizes[1]);
>> +		} else if (*num_planes == 3) {
>> +			sizes[0] = inst_format.width * inst_format.height;
>> +			sizes[1] = inst_format.width * inst_format.height / 4;
>> +			sizes[2] = inst_format.width * inst_format.height / 4;
>> +			dev_dbg(inst->dev->dev, "size[0] : %d | size[1] : %d | size[2] : %d\n",
>> +				sizes[0], sizes[1], sizes[2]);
>> +		}
>> +	}
>> +
>> +	if (inst->state == VPU_INST_STATE_NONE && q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
>> +		int ret_code;
> 
> Declare "int ret;" at the start of the function.  Change all the
> "ret_code" variables to "int ret;".
> 
>> +		struct dec_open_param open_param;
>> +
>> +		memset(&open_param, 0, sizeof(struct dec_open_param));
>> +		wave5_set_default_dec_openparam(&open_param);
>> +
>> +		inst->bitstream_vbuf.size = ALIGN(inst->src_fmt.plane_fmt[0].sizeimage, 1024) * 4;
>> +		if (wave5_vdi_allocate_dma_memory(inst->dev, &inst->bitstream_vbuf) < 0)
>> +			dev_dbg(inst->dev->dev, "alloc bitstream fail: %zu\n",
>> +				inst->bitstream_vbuf.size);
>> +
>> +		inst->std = wave5_to_vpu_codstd(inst->src_fmt.pixelformat);
>> +		if (inst->std == STD_UNKNOWN) {
>> +			dev_warn(inst->dev->dev, "unsupported pixelformat: %.4s\n",
>> +				 (char *)&inst->src_fmt.pixelformat);
>> +			return -EINVAL;
>> +		}
>> +		open_param.bitstream_buffer = inst->bitstream_vbuf.daddr;
>> +		open_param.bitstream_buffer_size = inst->bitstream_vbuf.size;
>> +
>> +		ret_code = wave5_vpu_dec_open(inst, &open_param);
>> +		if (ret_code) {
>> +			dev_dbg(inst->dev->dev, "wave5_vpu_dec_open failed: %d\n", ret_code);
>> +			return -EINVAL;
> 
> Can we preserve the error code from wave5_vpu_dec_open()  "return ret;"?
> 
>> +		}
>> +
>> +		inst->state = VPU_INST_STATE_OPEN;
>> +
>> +		//wave5_vpu_dec_give_command(inst, ENABLE_LOGGING, 0);
> 
> Delete commented out code.
> 
>> +
>> +		if (inst->thumbnail_mode)
>> +			wave5_vpu_dec_give_command(inst, ENABLE_DEC_THUMBNAIL_MODE, 0);
>> +
>> +		inst->min_src_frame_buf_count = *num_buffers;
>> +	}
>> +
>> +	if (inst->state != VPU_INST_STATE_NONE && inst->state != VPU_INST_STATE_OPEN && q->type ==
>> +			V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
> 
> Please write it like this:
> 
> 	if (inst->state != VPU_INST_STATE_NONE &&
>              inst->state != VPU_INST_STATE_OPEN &&
>              q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
> 
> 
>> +		*num_buffers = inst->min_dst_frame_buf_count;
>> +
>> +		if (inst->state == VPU_INST_STATE_INIT_SEQ) {
> 
> Flip this around.  Pull the code in a tab.
> 
> 		if (inst->state != VPU_INST_STATE_INIT_SEQ)
> 			continue;
> 
> 
>> +			u32 non_linear_num = inst->min_dst_frame_buf_count;
>> +			u32 fb_stride, fb_height;
>> +			u32 luma_size, chroma_size;
>> +
>> +			for (i = 0; i < non_linear_num; i++) {
>> +				fb_stride = inst->dst_fmt.width;
>> +				fb_height = ALIGN(inst->dst_fmt.height, 32);
>> +				luma_size = fb_stride * fb_height;
>> +				chroma_size = ALIGN(fb_stride / 2, 16) * fb_height;
>> +
>> +				inst->frame_vbuf[i].size = luma_size + chroma_size;
>> +				if (wave5_vdi_allocate_dma_memory(inst->dev, &inst->frame_vbuf[i]) < 0)
>> +					dev_dbg(inst->dev->dev, "failed to alloc FBC buffer : %zu\n",
>> +						inst->frame_vbuf[i].size);
> 
> There needs to be some error handling for this.  No one will see a dbg
> and allocation failure is almost certainly going to lead to a crash,
> probably?
> 
>> +
>> +				inst->frame_buf[i].buf_y = inst->frame_vbuf[i].daddr;
>> +				inst->frame_buf[i].buf_cb = inst->frame_vbuf[i].daddr + luma_size;
>> +				inst->frame_buf[i].buf_cr = (dma_addr_t)-1;
>> +				inst->frame_buf[i].size = inst->frame_vbuf[i].size;
>> +				inst->frame_buf[i].width = inst->src_fmt.width;
>> +				inst->frame_buf[i].stride = fb_stride;
>> +				inst->frame_buf[i].map_type = COMPRESSED_FRAME_MAP;
>> +				inst->frame_buf[i].update_fb_info = TRUE;
> 
> 
> Use a tmp variable to shorten the lines and make it more readable.
> Humans only read the first and last characters of a word so I completely
> missed the "v" in "inst->frame_vbuf[i].daddr + luma_size;" at first.
> 
> 			frame = &inst->frame_buf[i];
> 			vframe = &inst->frame_vbuf[i];
> 
> 			vframe->size = luma_size + chroma_size;
> 			ret = wave5_vdi_allocate_dma_memory(inst->dev, vframe);
> 			if (ret)
> 				something;
> 
> 			frame->buf_y = vframe->daddr;
> 			frame->buf_cb = vframe->daddr + luma_size;
> 			frame->buf_cr = (dma_addr_t)-1;
> 			...
> 
>> +			}
>> +		}
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_buf_init(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %4d index %4d size[0] %4ld size[1] %4ld size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +	return 0;
>> +}
> 
> Delete this dummy function.  It's not called if it doesn't exist.
> 
>> +
>> +static int wave5_vpu_dec_buf_prepare(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %4d index %4d size[0] %4ld size[1] %4ld size[2] %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +
>> +	return 0;
>> +}
> 
> Delete dummy function.
> 
>> +
>> +static void wave5_vpu_dec_buf_queue(struct vb2_buffer *vb)
>> +{
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vpu_buffer *vpu_buf = wave5_to_vpu_buf(vbuf);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] : %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +
>> +	v4l2_m2m_buf_queue(inst->v4l2_fh.m2m_ctx, vbuf);
>> +
>> +	if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
>> +		vpu_buf->consumed = FALSE;
>> +		wave5_handle_bitstream_buffer(inst);
>> +		vbuf->sequence = inst->queued_src_buf_num++;
>> +	}
>> +
>> +	if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
> 
> Reverse this if statement.  Pull the code in a tab.
> 
> 
>> +		if (inst->state == VPU_INST_STATE_INIT_SEQ) {
>> +			dma_addr_t buf_addr_y = 0, buf_addr_cb = 0, buf_addr_cr = 0;
>> +			u32 buf_size = 0;
>> +			u32 non_linear_num = inst->min_dst_frame_buf_count;
>> +			u32 fb_stride = inst->dst_fmt.width;
>> +			u32 luma_size = fb_stride * inst->dst_fmt.height;
>> +			u32 chroma_size = (fb_stride / 2) * (inst->dst_fmt.height / 2);
>> +
>> +			if (inst->dst_fmt.num_planes == 1) {
>> +				buf_size = vb2_plane_size(&vbuf->vb2_buf, 0);
>> +				buf_addr_y = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
>> +				buf_addr_cb = buf_addr_y + luma_size;
>> +				buf_addr_cr = buf_addr_cb + chroma_size;
>> +			} else if (inst->dst_fmt.num_planes == 2) {
>> +				buf_size = vb2_plane_size(&vbuf->vb2_buf, 0) +
>> +					vb2_plane_size(&vbuf->vb2_buf, 1);
>> +				buf_addr_y = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
>> +				buf_addr_cb = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 1);
>> +				buf_addr_cr = buf_addr_cb + chroma_size;
>> +			} else if (inst->dst_fmt.num_planes == 3) {
>> +				buf_size = vb2_plane_size(&vbuf->vb2_buf, 0) +
>> +					vb2_plane_size(&vbuf->vb2_buf, 1) +
>> +					vb2_plane_size(&vbuf->vb2_buf, 2);
>> +				buf_addr_y = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
>> +				buf_addr_cb = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 1);
>> +				buf_addr_cr = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 2);
>> +			}
>> +			inst->frame_buf[vb->index + non_linear_num].buf_y = buf_addr_y;
>> +			inst->frame_buf[vb->index + non_linear_num].buf_cb = buf_addr_cb;
>> +			inst->frame_buf[vb->index + non_linear_num].buf_cr = buf_addr_cr;
>> +			inst->frame_buf[vb->index + non_linear_num].size = buf_size;
>> +			inst->frame_buf[vb->index + non_linear_num].width = inst->src_fmt.width;
>> +			inst->frame_buf[vb->index + non_linear_num].stride = fb_stride;
>> +			inst->frame_buf[vb->index + non_linear_num].map_type = LINEAR_FRAME_MAP;
>> +			inst->frame_buf[vb->index + non_linear_num].update_fb_info = TRUE;
>> +		}
>> +
>> +		if (inst->state == VPU_INST_STATE_PIC_RUN || inst->state == VPU_INST_STATE_STOP ||
>> +		    inst->state == VPU_INST_STATE_WAIT_BUF) {
> 
> Break this up like:
> 
> 		if (inst->state == VPU_INST_STATE_PIC_RUN ||
> 		    inst->state == VPU_INST_STATE_STOP ||
> 		    inst->state == VPU_INST_STATE_WAIT_BUF) {
> 
> 
>> +			wave5_vpu_dec_clr_disp_flag(inst, vb->index);
>> +			if (inst->state == VPU_INST_STATE_WAIT_BUF)
>> +				inst->state = VPU_INST_STATE_PIC_RUN;
>> +		}
>> +		vbuf->sequence = inst->queued_dst_buf_num++;
>> +	}
>> +}
>> +
>> +static void wave5_vpu_dec_buf_finish(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index : %4d size[0] %4ld size[1] %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +}
> 
> Delete.
> 
>> +
>> +static void wave5_vpu_dec_buf_cleanup(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] : %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +}
> 
> Delete.
> 
>> +
>> +static int wave5_vpu_dec_start_streaming(struct vb2_queue *q, unsigned int count)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(q);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d\n", q->type);
>> +
>> +	if (inst->state == VPU_INST_STATE_OPEN) {
> 
> Pull this if statement code into a separate function.
> 
>> +		struct dec_initial_info initial_info;
>> +		int ret;
> 
> Search for "[tab][tab]ret;".  Always declare "ret" at the top of a
> function.
> 
>> +
>> +		ret = wave5_vpu_dec_issue_seq_init(inst);
>> +		if (ret)
>> +			dev_dbg(inst->dev->dev, "failed wave5_vpu_dec_issue_seq_init %d\n", ret);
>> +
>> +		if (wave5_vpu_wait_interrupt(inst, VPU_DEC_TIMEOUT) < 0)
>> +			dev_dbg(inst->dev->dev, "failed to call vpu_wait_interrupt()\n");
>> +
>> +		ret = wave5_vpu_dec_complete_seq_init(inst, &initial_info);
>> +		if (ret) {
>> +			dev_dbg(inst->dev->dev, "vpu_dec_complete_seq_init: %d, reason : %d\n",
>> +				ret, initial_info.seq_init_err_reason);
>> +		} else {
>> +			static const struct v4l2_event vpu_event_src_ch = {
>> +				.type = V4L2_EVENT_SOURCE_CHANGE,
>> +				.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
>> +			};
>> +
>> +			dev_dbg(inst->dev->dev, "width %d height %d profile %d | minbuffer : %u\n",
>> +				initial_info.pic_width, initial_info.pic_height,
>> +				initial_info.profile, initial_info.min_frame_buffer_count);
>> +
>> +			inst->state = VPU_INST_STATE_INIT_SEQ;
>> +			inst->min_dst_frame_buf_count = initial_info.min_frame_buffer_count + 1;
>> +
>> +			if (initial_info.pic_width != inst->src_fmt.width ||
>> +			    initial_info.pic_height != inst->src_fmt.height) {
>> +				wave5_update_pix_fmt(&inst->src_fmt, initial_info.pic_width,
>> +						     initial_info.pic_height);
>> +				wave5_update_pix_fmt(&inst->dst_fmt, initial_info.pic_width,
>> +						     initial_info.pic_height);
>> +			}
>> +
>> +			v4l2_event_queue_fh(&inst->v4l2_fh, &vpu_event_src_ch);
>> +		}
>> +	}
>> +
>> +	if (inst->state == VPU_INST_STATE_INIT_SEQ &&
>> +	    q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
>> +		int ret;
>> +		u32 non_linear_num = inst->min_dst_frame_buf_count;
>> +		u32 linear_num = inst->min_dst_frame_buf_count;
>> +		u32 stride = inst->dst_fmt.width;
>> +
>> +		dev_dbg(inst->dev->dev, "stride %d dst height %d\n", stride, inst->dst_fmt.height);
>> +		ret = wave5_vpu_dec_register_frame_buffer_ex(inst, non_linear_num, linear_num,
>> +							     stride, inst->dst_fmt.height,
>> +							    COMPRESSED_FRAME_MAP);
>> +		if (ret)
>> +			dev_dbg(inst->dev->dev, "fail vpu_dec_register_frame_buffer_ex %d", ret);
>> +
>> +		inst->state = VPU_INST_STATE_PIC_RUN;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static void wave5_vpu_dec_stop_streaming(struct vb2_queue *q)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(q);
>> +	struct vb2_v4l2_buffer *buf;
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d\n", q->type);
>> +
>> +	if (wave5_vpu_both_queues_are_streaming(inst))
>> +		inst->state = VPU_INST_STATE_STOP;
>> +
>> +	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
>> +		while ((buf = v4l2_m2m_src_buf_remove(inst->v4l2_fh.m2m_ctx))) {
>> +			dev_dbg(inst->dev->dev, "buf type : %4d | index : %4d\n", buf->vb2_buf.type,
>> +				buf->vb2_buf.index);
>> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
>> +		}
>> +	} else {
>> +		while ((buf = v4l2_m2m_dst_buf_remove(inst->v4l2_fh.m2m_ctx))) {
>> +			u32 plane = 0;
> 
> Bogus initializer.
> 
>> +
>> +			dev_dbg(inst->dev->dev, "buf type : %4d | index : %4d\n", buf->vb2_buf.type,
>> +				buf->vb2_buf.index);
>> +
>> +			for (plane = 0; plane < inst->dst_fmt.num_planes; plane++)
>> +				vb2_set_plane_payload(&buf->vb2_buf, plane, 0);
>> +
>> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
>> +		}
>> +	}
>> +}
>> +
>> +static const struct vb2_ops wave5_vpu_dec_vb2_ops = {
>> +	.queue_setup = wave5_vpu_dec_queue_setup,
>> +	.wait_prepare = vb2_ops_wait_prepare,
>> +	.wait_finish = vb2_ops_wait_finish,
>> +	.buf_init = wave5_vpu_dec_buf_init,
>> +	.buf_prepare = wave5_vpu_dec_buf_prepare,
>> +	.buf_queue = wave5_vpu_dec_buf_queue,
>> +	.buf_finish = wave5_vpu_dec_buf_finish,
>> +	.buf_cleanup = wave5_vpu_dec_buf_cleanup,
>> +	.start_streaming = wave5_vpu_dec_start_streaming,
>> +	.stop_streaming = wave5_vpu_dec_stop_streaming,
>> +};
>> +
>> +static void wave5_set_default_format(struct v4l2_pix_format_mplane *src_fmt,
>> +				     struct v4l2_pix_format_mplane *dst_fmt)
>> +{
>> +	unsigned int dst_pix_fmt = wave5_vpu_dec_fmt_list[VPU_FMT_TYPE_RAW][0].v4l2_pix_fmt;
>> +	const struct v4l2_format_info *dst_fmt_info = v4l2_format_info(dst_pix_fmt);
>> +
>> +	src_fmt->pixelformat = wave5_vpu_dec_fmt_list[VPU_FMT_TYPE_CODEC][0].v4l2_pix_fmt;
>> +	src_fmt->field = V4L2_FIELD_NONE;
>> +	src_fmt->flags = 0;
>> +	src_fmt->num_planes = 1;
>> +	wave5_update_pix_fmt(src_fmt, 720, 480);
>> +
>> +	dst_fmt->pixelformat = dst_pix_fmt;
>> +	dst_fmt->field = V4L2_FIELD_NONE;
>> +	dst_fmt->flags = 0;
>> +	dst_fmt->num_planes = dst_fmt_info->mem_planes;
>> +	wave5_update_pix_fmt(dst_fmt, 736, 480);
>> +}
>> +
>> +static int wave5_vpu_dec_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
>> +{
>> +	struct vpu_instance *inst = priv;
>> +	int ret;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
>> +	src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
>> +	src_vq->mem_ops = &vb2_dma_contig_memops;
>> +	src_vq->ops = &wave5_vpu_dec_vb2_ops;
>> +	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> +	src_vq->buf_struct_size = sizeof(struct vpu_buffer);
>> +	src_vq->allow_zero_bytesused = 1;
>> +	src_vq->min_buffers_needed = 0;
>> +	src_vq->drv_priv = inst;
>> +	src_vq->lock = &inst->dev->dev_lock;
>> +	src_vq->dev = inst->dev->v4l2_dev.dev;
>> +	ret = vb2_queue_init(src_vq);
>> +	if (ret)
>> +		return ret;
>> +
>> +	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
>> +	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
>> +	dst_vq->mem_ops = &vb2_dma_contig_memops;
>> +	dst_vq->ops = &wave5_vpu_dec_vb2_ops;
>> +	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> +	dst_vq->buf_struct_size = sizeof(struct vpu_buffer);
>> +	dst_vq->allow_zero_bytesused = 1;
>> +	dst_vq->min_buffers_needed = 0;
>> +	dst_vq->drv_priv = inst;
>> +	dst_vq->lock = &inst->dev->dev_lock;
>> +	dst_vq->dev = inst->dev->v4l2_dev.dev;
>> +	ret = vb2_queue_init(dst_vq);
>> +	if (ret)
>> +		return ret;
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct vpu_instance_ops wave5_vpu_dec_inst_ops = {
>> +	.start_process = wave5_vpu_dec_start_decode,
>> +	.stop_process = wave5_vpu_dec_stop_decode,
>> +	.finish_process = wave5_vpu_dec_finish_decode,
>> +};
>> +
>> +static int wave5_vpu_open_dec(struct file *filp)
>> +{
>> +	struct video_device *vdev = video_devdata(filp);
>> +	struct vpu_device *dev = video_drvdata(filp);
>> +	struct vpu_instance *inst = NULL;
>> +	struct v4l2_ctrl *ctrl;
>> +
>> +	inst = kzalloc(sizeof(*inst), GFP_KERNEL);
>> +	if (!inst)
>> +		return -ENOMEM;
>> +
>> +	inst->dev = dev;
>> +	inst->type = VPU_INST_TYPE_DEC;
>> +	inst->ops = &wave5_vpu_dec_inst_ops;
>> +
>> +	spin_lock_init(&inst->bitstream_lock);
>> +
>> +	v4l2_fh_init(&inst->v4l2_fh, vdev);
>> +	filp->private_data = &inst->v4l2_fh;
>> +	v4l2_fh_add(&inst->v4l2_fh);
>> +
>> +	inst->v4l2_fh.m2m_ctx = v4l2_m2m_ctx_init(dev->v4l2_m2m_dev, inst, wave5_vpu_dec_queue_init);
>> +	if (IS_ERR(inst->v4l2_fh.m2m_ctx))
>> +		return -ENODEV;
> 
> kfree(inst);
> 
>> +
>> +	v4l2_ctrl_handler_init(&inst->v4l2_ctrl_hdl, 10);
>> +	v4l2_ctrl_new_custom(&inst->v4l2_ctrl_hdl, &wave5_vpu_thumbnail_mode, NULL);
>> +	ctrl = v4l2_ctrl_new_std(&inst->v4l2_ctrl_hdl, &wave5_vpu_dec_ctrl_ops,
>> +				 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1, 1);
>> +	if (ctrl)
>> +		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
>> +
>> +	if (inst->v4l2_ctrl_hdl.error)
>> +		return -ENODEV;
> 
> Error handling.  Cleanup.
> 
>> +
>> +	inst->v4l2_fh.ctrl_handler = &inst->v4l2_ctrl_hdl;
>> +	v4l2_ctrl_handler_setup(&inst->v4l2_ctrl_hdl);
>> +
>> +	wave5_set_default_format(&inst->src_fmt, &inst->dst_fmt);
>> +	inst->colorspace = V4L2_COLORSPACE_REC709;
>> +	inst->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
>> +	inst->hsv_enc = 0;
>> +	inst->quantization = V4L2_QUANTIZATION_DEFAULT;
>> +	inst->xfer_func = V4L2_XFER_FUNC_DEFAULT;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_dec_release(struct file *filp)
>> +{
>> +	int i;
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(filp->private_data);
>> +	unsigned int loop_count = 0;
>> +
>> +	v4l2_m2m_ctx_release(inst->v4l2_fh.m2m_ctx);
>> +	if (inst->state != VPU_INST_STATE_NONE) {
>> +		u32 fail_res = 0;
> 
> No need to initialize this.
> 
>> +
>> +		wave5_vpu_dec_close(inst, &fail_res);
>> +		while (fail_res == WAVE5_SYSERR_VPU_STILL_RUNNING) {
>> +			if (wave5_vpu_wait_interrupt(inst, VPU_DEC_TIMEOUT) < 0) {
>> +				dev_dbg(inst->dev->dev, "failed to call vpu_wait_interrupt()\n");
>> +				if (loop_count < 10) {
>> +					loop_count++;
>> +					continue;
>> +				} else {
>> +					dev_dbg(inst->dev->dev, "failed wave5_vpu_dec_close()\n");
> 
> This should be a warning.
> 
>> +					break;
>> +				}
>> +			} else {
>> +				break;
>> +			}
>> +			fail_res = 0;
>> +			wave5_vpu_dec_close(inst, &fail_res);
> 
> Heh...  This is dead code.  At this point we've either hit a break or
> a continue so the condition "fail_res == WAVE5_SYSERR_VPU_STILL_RUNNING"
> is always true.
> 
> The loop counter seems like a work around for this forever loop bug.
> 
>> +		}
>> +	}
> 
> 
> You could write it like this?
> 
> 	u32 fail_res;
> 	int retry_count = 10;
> 	int i;
> 
> 	if (inst->state != VPU_INST_STATE_NONE) {
> 		for (i = 0; i < retry_count; i++) {
> 			wave5_vpu_dec_close(inst, &fail_res);
> 			if (fail_res != WAVE5_SYSERR_VPU_STILL_RUNNING)
> 				break;
> 			if (wave5_vpu_wait_interrupt(inst, VPU_DEC_TIMEOUT))

hi, thank you for the suggestion, this line should be the negation cond:
if (!wave5_vpu_wait_interrupt(inst, VPU_DEC_TIMEOUT))

since wave5_vpu_wait_interrupt return 0 if it succeeds

thanks,
Dafna

> 				break;
> 		}
> 
> 		if (fail_res == WAVE5_SYSERR_VPU_STILL_RUNNING)
> 			dev_warn(inst->dev->dev, "failed wave5_vpu_dec_close()\n");
> 	}
> 
>> +	for (i = 0; i < inst->min_dst_frame_buf_count; i++) {
>> +		if (inst->frame_vbuf[i].size != 0)
>> +			wave5_vdi_free_dma_memory(inst->dev, &inst->frame_vbuf[i]);
> 
> No need for this if condition.  Freeing size zero is allowed.
> 
> 	for (i = 0; i < inst->min_dst_frame_buf_count; i++)
> 		wave5_vdi_free_dma_memory(inst->dev, &inst->frame_vbuf[i]);
> 
> 
>> +	}
>> +	if (inst->bitstream_vbuf.size != 0)
> 
> No need.
> 
>> +		wave5_vdi_free_dma_memory(inst->dev, &inst->bitstream_vbuf);
>> +	v4l2_ctrl_handler_free(&inst->v4l2_ctrl_hdl);
>> +	v4l2_fh_del(&inst->v4l2_fh);
>> +	v4l2_fh_exit(&inst->v4l2_fh);
>> +	kfree(inst);
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct v4l2_file_operations wave5_vpu_dec_fops = {
>> +	.owner = THIS_MODULE,
>> +	.open = wave5_vpu_open_dec,
>> +	.release = wave5_vpu_dec_release,
>> +	.unlocked_ioctl = video_ioctl2,
>> +	.poll = v4l2_m2m_fop_poll,
>> +	.mmap = v4l2_m2m_fop_mmap,
>> +};
>> +
>> +int wave5_vpu_dec_register_device(struct vpu_device *dev)
>> +{
>> +	struct video_device *vdev_dec;
>> +	int ret;
>> +
>> +	vdev_dec = devm_kzalloc(dev->v4l2_dev.dev, sizeof(*vdev_dec), GFP_KERNEL);
>> +	if (!vdev_dec)
>> +		return -ENOMEM;
>> +
>> +	dev->video_dev_dec = vdev_dec;
>> +
>> +	strscpy(vdev_dec->name, VPU_DEC_DEV_NAME, sizeof(vdev_dec->name));
>> +	vdev_dec->fops = &wave5_vpu_dec_fops;
>> +	vdev_dec->ioctl_ops = &wave5_vpu_dec_ioctl_ops;
>> +	vdev_dec->release = video_device_release_empty;
>> +	vdev_dec->v4l2_dev = &dev->v4l2_dev;
>> +	vdev_dec->vfl_dir = VFL_DIR_M2M;
>> +	vdev_dec->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
>> +	vdev_dec->lock = &dev->dev_lock;
>> +
>> +	ret = video_register_device(vdev_dec, VFL_TYPE_VIDEO, -1);
>> +	if (ret)
>> +		return ret;
>> +
>> +	video_set_drvdata(vdev_dec, dev);
>> +
>> +	return 0;
>> +}
>> +
>> +void wave5_vpu_dec_unregister_device(struct vpu_device *dev)
>> +{
>> +	video_unregister_device(dev->video_dev_dec);
>> +}
>> +
>> diff --git a/drivers/staging/media/wave5/vpu_enc.c b/drivers/staging/media/wave5/vpu_enc.c
>> new file mode 100644
>> index 000000000000..b4b695a7da0a
>> --- /dev/null
>> +++ b/drivers/staging/media/wave5/vpu_enc.c
>> @@ -0,0 +1,1585 @@
>> +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
>> +/*
>> + * Wave5 series multi-standard codec IP - encoder interface
>> + *
>> + * Copyright (C) 2021 CHIPS&MEDIA INC
>> + */
>> +#include "vpu.h"
>> +#define VPU_ENC_DEV_NAME "C&M VPU encoder"
>> +#define VPU_ENC_DRV_NAME "vpu-enc"
>> +
>> +static const struct vpu_format wave5_vpu_enc_fmt_list[2][6] = {
>> +	[VPU_FMT_TYPE_CODEC] = {
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_HEVC,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_H264,
>> +			.max_width = 8192,
>> +			.min_width = 32,
>> +			.max_height = 8192,
>> +			.min_height = 32,
>> +		},
>> +	},
>> +	[VPU_FMT_TYPE_RAW] = {
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_YUV420,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV12,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV21,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_YUV420M,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV12M,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +		{
>> +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV21M,
>> +			.max_width = 8192,
>> +			.min_width = 8,
>> +			.max_height = 8192,
>> +			.min_height = 8,
>> +		},
>> +	}
>> +};
>> +
>> +static enum wave_std wave5_to_vpu_wavestd(unsigned int v4l2_pix_fmt)
>> +{
>> +	switch (v4l2_pix_fmt) {
>> +	case V4L2_PIX_FMT_H264:
>> +		return W_AVC_ENC;
>> +	case V4L2_PIX_FMT_HEVC:
>> +		return W_HEVC_ENC;
>> +	default:
>> +		return STD_UNKNOWN;
>> +	}
>> +}
>> +
>> +static const struct vpu_format *wave5_find_vpu_format(unsigned int v4l2_pix_fmt, enum vpu_fmt_type type)
>> +{
>> +	unsigned int index;
>> +
>> +	for (index = 0; index < ARRAY_SIZE(wave5_vpu_enc_fmt_list[type]); index++) {
>> +		if (wave5_vpu_enc_fmt_list[type][index].v4l2_pix_fmt == v4l2_pix_fmt)
>> +			return &wave5_vpu_enc_fmt_list[type][index];
>> +	}
>> +
>> +	return NULL;
>> +}
>> +
>> +static const struct vpu_format *wave5_find_vpu_fmt_by_idx(unsigned int idx, enum vpu_fmt_type type)
>> +{
>> +	if (idx >= ARRAY_SIZE(wave5_vpu_enc_fmt_list[type]))
>> +		return NULL;
>> +
>> +	if (!wave5_vpu_enc_fmt_list[type][idx].v4l2_pix_fmt)
>> +		return NULL;
>> +
>> +	return &wave5_vpu_enc_fmt_list[type][idx];
>> +}
>> +
>> +static struct vb2_v4l2_buffer *wave5_get_valid_src_buf(struct vpu_instance *inst)
>> +{
>> +	struct vb2_v4l2_buffer *vb2_v4l2_buf = NULL;
>> +	struct v4l2_m2m_buffer *v4l2_m2m_buf = NULL;
>> +	struct vpu_buffer *vpu_buf = NULL;
>> +	bool no_src_buf = TRUE;
> 
> Don't put "no" in a variable name.  The double negatives make my
> brain ache.  "Not found equals false" ???!?
> 
> 	bool src_buf = false;
> 
> Even better just delete the variable all together and introduce direct
> returns.  See below:
> 
>> +
>> +	v4l2_m2m_for_each_src_buf(inst->v4l2_fh.m2m_ctx, v4l2_m2m_buf) {
>> +		vb2_v4l2_buf = &v4l2_m2m_buf->vb;
>> +		vpu_buf = wave5_to_vpu_buf(vb2_v4l2_buf);
>> +
>> +		if (!vpu_buf->consumed) {
>> +			dev_dbg(inst->dev->dev, "no consumed src idx : %d\n",
>> +				vb2_v4l2_buf->vb2_buf.index);
>> +			no_src_buf = FALSE;
>> +			break;
>> +		}
>> +	}
>> +
>> +	if (no_src_buf)
>> +		vb2_v4l2_buf = NULL;
>> +
>> +	return vb2_v4l2_buf;
>> +}
> 
> You could write it like so:
> 
> static struct vb2_v4l2_buffer *wave5_get_valid_src_buf(struct vpu_instance *inst)
> {
> 	struct v4l2_m2m_buffer *v4l2_m2m;
> 	struct vb2_v4l2_buffer *vb;
> 	struct vpu_buffer *vpu;
> 
> 	v4l2_m2m_for_each_src_buf(inst->v4l2_fh.m2m_ctx, v4l2_m2m) {
> 		vb = &v4l2_m2m->vb;
> 		vpu = wave5_to_vpu_buf(vb);
> 
> 		if (!vpu->consumed)
> 			return vb;
> 	}
> 
> 	return NULL;
> }
> 
> 
>> +
>> +static struct vb2_v4l2_buffer *wave5_get_valid_dst_buf(struct vpu_instance *inst)
>> +{
>> +	struct vb2_v4l2_buffer *vb2_v4l2_buf = NULL;
>> +	struct v4l2_m2m_buffer *v4l2_m2m_buf = NULL;
>> +	struct vpu_buffer *vpu_buf = NULL;
>> +	bool no_dst_buf = TRUE;
> 
> Same comments.
> 
>> +
>> +	v4l2_m2m_for_each_dst_buf(inst->v4l2_fh.m2m_ctx, v4l2_m2m_buf) {
>> +		vb2_v4l2_buf = &v4l2_m2m_buf->vb;
>> +		vpu_buf = wave5_to_vpu_buf(vb2_v4l2_buf);
>> +
>> +		if (!vpu_buf->consumed) {
>> +			dev_dbg(inst->dev->dev, "no consumed dst idx : %d\n",
>> +				vb2_v4l2_buf->vb2_buf.index);
>> +			no_dst_buf = FALSE;
>> +			break;
>> +		}
>> +	}
>> +
>> +	if (no_dst_buf)
>> +		vb2_v4l2_buf = NULL;
>> +
>> +	return vb2_v4l2_buf;
>> +}
>> +
>> +static void wave5_update_pix_fmt(struct v4l2_pix_format_mplane *pix_mp, unsigned int width,
>> +				 unsigned int height)
>> +{
>> +	switch (pix_mp->pixelformat) {
>> +	case V4L2_PIX_FMT_YUV420:
>> +	case V4L2_PIX_FMT_NV12:
>> +	case V4L2_PIX_FMT_NV21:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[0].sizeimage = round_up(width, 32) * height * 3 / 2;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		break;
>> +	case V4L2_PIX_FMT_YUV420M:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[0].sizeimage = round_up(width, 32) * height;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		pix_mp->plane_fmt[1].bytesperline = round_up(width, 32) / 2;
>> +		pix_mp->plane_fmt[1].sizeimage = round_up(width, 32) * height / 4;
>> +		memset(&pix_mp->plane_fmt[1].reserved, 0, sizeof(pix_mp->plane_fmt[1].reserved));
>> +		pix_mp->plane_fmt[2].bytesperline = round_up(width, 32) / 2;
>> +		pix_mp->plane_fmt[2].sizeimage = round_up(width, 32) * height / 4;
>> +		memset(&pix_mp->plane_fmt[2].reserved, 0, sizeof(pix_mp->plane_fmt[2].reserved));
>> +		break;
>> +	case V4L2_PIX_FMT_NV12M:
>> +	case V4L2_PIX_FMT_NV21M:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[0].sizeimage = round_up(width, 32) * height;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		pix_mp->plane_fmt[1].bytesperline = round_up(width, 32);
>> +		pix_mp->plane_fmt[1].sizeimage = round_up(width, 32) * height / 2;
>> +		memset(&pix_mp->plane_fmt[1].reserved, 0, sizeof(pix_mp->plane_fmt[1].reserved));
>> +		break;
>> +	default:
>> +		pix_mp->width = round_up(width, 32);
>> +		pix_mp->height = height;
>> +		pix_mp->plane_fmt[0].bytesperline = 0;
>> +		pix_mp->plane_fmt[0].sizeimage = round_up(width, 32) * height;
>> +		memset(&pix_mp->plane_fmt[0].reserved, 0, sizeof(pix_mp->plane_fmt[0].reserved));
>> +		break;
>> +	}
>> +}
>> +
>> +static void wave5_vpu_enc_start_encode(struct vpu_instance *inst)
>> +{
>> +	int ret;
>> +	struct queue_status_info q_status;
>> +	u32 remain_cmd_q, max_cmd_q = 0;
>> +
>> +	wave5_vpu_enc_give_command(inst, ENC_GET_QUEUE_STATUS, &q_status);
>> +	dev_dbg(inst->dev->dev, "min_src_buf_cnt %d | default : %d | qcount : %d | report_q : %d\n",
>> +		inst->min_src_frame_buf_count, COMMAND_QUEUE_DEPTH, q_status.instance_queue_count,
>> +		q_status.report_queue_count);
>> +
>> +	max_cmd_q = (inst->min_src_frame_buf_count < COMMAND_QUEUE_DEPTH) ?
>> +		inst->min_src_frame_buf_count : COMMAND_QUEUE_DEPTH;
>> +	remain_cmd_q = max_cmd_q - q_status.instance_queue_count;
>> +
>> +	while (remain_cmd_q) {
>> +		struct vb2_v4l2_buffer *src_buf;
>> +		struct vb2_v4l2_buffer *dst_buf;
>> +		struct vpu_buffer *src_vbuf;
>> +		struct vpu_buffer *dst_vbuf;
>> +		struct frame_buffer frame_buf;
>> +		struct enc_param pic_param;
>> +		u32 luma_size = (inst->dst_fmt.width * inst->dst_fmt.height);
>> +		u32 chroma_size = ((inst->dst_fmt.width / 2) * (inst->dst_fmt.height / 2));
>> +		u32 fail_res;
>> +
>> +		memset(&pic_param, 0, sizeof(struct enc_param));
>> +
>> +		src_buf = wave5_get_valid_src_buf(inst);
>> +		dst_buf = wave5_get_valid_dst_buf(inst);
>> +
>> +		if (!src_buf || !dst_buf) {
>> +			dev_dbg(inst->dev->dev, "no valid src/dst buf\n");
>> +			break;
>> +		}
>> +
>> +		src_vbuf = wave5_to_vpu_buf(src_buf);
>> +		dst_vbuf = wave5_to_vpu_buf(dst_buf);
>> +
>> +		if (inst->src_fmt.num_planes == 1) {
>> +			frame_buf.buf_y = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
>> +			frame_buf.buf_cb = frame_buf.buf_y + luma_size;
>> +			frame_buf.buf_cr = frame_buf.buf_cb + chroma_size;
>> +		} else if (inst->src_fmt.num_planes == 2) {
>> +			frame_buf.buf_y = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
>> +			frame_buf.buf_cb = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 1);
>> +			frame_buf.buf_cr = frame_buf.buf_cb + chroma_size;
>> +		} else if (inst->src_fmt.num_planes == 3) {
>> +			frame_buf.buf_y = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
>> +			frame_buf.buf_cb = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 1);
>> +			frame_buf.buf_cr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 2);
>> +		}
>> +		frame_buf.stride = inst->dst_fmt.width;
>> +		frame_buf.cbcr_interleave = 0;
>> +
>> +		dev_dbg(inst->dev->dev, "encoding src sequence : %d | dst sequence : %d\n",
>> +			src_buf->sequence, dst_buf->sequence);
>> +
>> +		pic_param.src_idx = src_buf->vb2_buf.index;
>> +		pic_param.source_frame = &frame_buf;
>> +		pic_param.pic_stream_buffer_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf,
>> +										 0);
>> +		pic_param.pic_stream_buffer_size = vb2_plane_size(&dst_buf->vb2_buf, 0);
>> +		pic_param.code_option.implicit_header_encode = 1;
>> +
>> +		ret = wave5_vpu_enc_start_one_frame(inst, &pic_param, &fail_res);
>> +		if (ret) {
>> +			if (fail_res != WAVE5_SYSERR_QUEUEING_FAIL) {
>> +				src_buf = v4l2_m2m_src_buf_remove(inst->v4l2_fh.m2m_ctx);
>> +				dst_buf = v4l2_m2m_dst_buf_remove(inst->v4l2_fh.m2m_ctx);
>> +				dev_dbg(inst->dev->dev, "fail wave5_vpu_enc_start_one_frame() %d\n",
>> +					ret);
>> +				inst->state = VPU_INST_STATE_STOP;
>> +				v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
>> +				v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
>> +			}
>> +		} else {
>> +			dev_dbg(inst->dev->dev, "success  wave5_vpu_enc_start_one_frame()\n");
>> +			src_vbuf->consumed = TRUE;
>> +			dst_vbuf->consumed = TRUE;
>> +		}
>> +
>> +		remain_cmd_q--;
>> +	}
>> +}
>> +
>> +static void wave5_vpu_enc_stop_encode(struct vpu_instance *inst)
>> +{
>> +	struct queue_status_info q_status;
>> +
>> +	inst->state = VPU_INST_STATE_STOP;
>> +
>> +	wave5_vpu_enc_give_command(inst, ENC_GET_QUEUE_STATUS, &q_status);
>> +
>> +	if (q_status.report_queue_count + q_status.instance_queue_count == 0)
>> +		v4l2_m2m_job_finish(inst->dev->v4l2_m2m_dev, inst->v4l2_fh.m2m_ctx);
>> +}
>> +
>> +static void wave5_vpu_enc_finish_encode(struct vpu_instance *inst)
>> +{
>> +	int ret;
>> +	struct enc_output_info enc_output_info;
>> +	int irq_status;
>> +
>> +	if (kfifo_out(&inst->dev->irq_status, &irq_status, sizeof(int)))
>> +		wave5_vpu_clear_interrupt_ex(inst, irq_status);
>> +
>> +	ret = wave5_vpu_enc_get_output_info(inst, &enc_output_info);
>> +	if (ret) {
>> +		dev_dbg(inst->dev->dev, "vpu_enc_get_output_info fail %d  reason: %d | info : %d\n",
>> +			ret, enc_output_info.error_reason, enc_output_info.warn_info);
>> +	} else {
>> +		struct vb2_v4l2_buffer *dst_buf = NULL;
>> +		struct v4l2_m2m_buffer *v4l2_m2m_buf = NULL;
>> +
>> +		v4l2_m2m_buf = NULL;
>> +		v4l2_m2m_for_each_dst_buf(inst->v4l2_fh.m2m_ctx, v4l2_m2m_buf) {
>> +			dst_buf = &v4l2_m2m_buf->vb;
>> +			if (enc_output_info.bitstream_buffer ==
>> +					vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0))
>> +				break;
>> +		}
>> +
>> +		if (enc_output_info.enc_src_idx >= 0) {
>> +			struct vb2_v4l2_buffer *src_buf =
>> +				v4l2_m2m_src_buf_remove_by_idx(inst->v4l2_fh.m2m_ctx,
>> +							       enc_output_info.enc_src_idx);
>> +
>> +			inst->timestamp = src_buf->vb2_buf.timestamp;
>> +			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
>> +		}
>> +
>> +		if (enc_output_info.recon_frame_index == RECON_IDX_FLAG_ENC_END) {
>> +			static const struct v4l2_event vpu_event_eos = {
>> +				.type = V4L2_EVENT_EOS
>> +			};
>> +
>> +			dst_buf->flags |= V4L2_BUF_FLAG_LAST;
>> +			vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
>> +
>> +			inst->state = VPU_INST_STATE_STOP;
>> +			v4l2_event_queue_fh(&inst->v4l2_fh, &vpu_event_eos);
>> +		} else {
>> +			vb2_set_plane_payload(&dst_buf->vb2_buf, 0, enc_output_info.bitstream_size);
>> +
>> +			dst_buf->vb2_buf.timestamp = inst->timestamp;
>> +			dst_buf->field = V4L2_FIELD_NONE;
>> +			if (enc_output_info.pic_type == PIC_TYPE_I) {
>> +				if (enc_output_info.enc_vcl_nut == 19 ||
>> +				    enc_output_info.enc_vcl_nut == 20)
>> +					dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
>> +				else
>> +					dst_buf->flags |= V4L2_BUF_FLAG_PFRAME;
>> +			} else if (enc_output_info.pic_type == PIC_TYPE_P) {
>> +				dst_buf->flags |= V4L2_BUF_FLAG_PFRAME;
>> +			} else if (enc_output_info.pic_type == PIC_TYPE_B) {
>> +				dst_buf->flags |= V4L2_BUF_FLAG_BFRAME;
>> +			}
>> +		}
>> +
>> +		v4l2_m2m_dst_buf_remove_by_buf(inst->v4l2_fh.m2m_ctx, dst_buf);
>> +		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
>> +	}
>> +
>> +	if (inst->state == VPU_INST_STATE_STOP) {
>> +		struct queue_status_info q_status;
>> +
>> +		wave5_vpu_enc_give_command(inst, ENC_GET_QUEUE_STATUS, &q_status);
>> +		dev_dbg(inst->dev->dev, "default : %d | qcount : %d | report_q : %d\n",
>> +			COMMAND_QUEUE_DEPTH, q_status.instance_queue_count,
>> +				q_status.report_queue_count);
>> +
>> +		if (q_status.report_queue_count + q_status.instance_queue_count == 0)
>> +			v4l2_m2m_job_finish(inst->dev->v4l2_m2m_dev, inst->v4l2_fh.m2m_ctx);
>> +	} else {
>> +		v4l2_m2m_job_finish(inst->dev->v4l2_m2m_dev, inst->v4l2_fh.m2m_ctx);
>> +	}
>> +}
>> +
>> +static int wave5_vpu_enc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	strscpy(cap->driver, VPU_ENC_DRV_NAME, sizeof(cap->driver));
>> +	strscpy(cap->card, VPU_ENC_DRV_NAME, sizeof(cap->card));
>> +	strscpy(cap->bus_info, "platform:" VPU_ENC_DRV_NAME, sizeof(cap->bus_info));
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_enum_framesizes(struct file *f, void *fh, struct v4l2_frmsizeenum *fsize)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	if (fsize->index)
>> +		return -EINVAL;
>> +
>> +	vpu_fmt = wave5_find_vpu_format(fsize->pixel_format, VPU_FMT_TYPE_CODEC);
>> +	if (!vpu_fmt) {
>> +		vpu_fmt = wave5_find_vpu_format(fsize->pixel_format, VPU_FMT_TYPE_RAW);
>> +		if (!vpu_fmt)
>> +			return -EINVAL;
>> +	}
>> +
>> +	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
>> +	fsize->stepwise.min_width = vpu_fmt->min_width;
>> +	fsize->stepwise.max_width = vpu_fmt->max_width;
>> +	fsize->stepwise.step_width = 1;
>> +	fsize->stepwise.min_height = vpu_fmt->min_height;
>> +	fsize->stepwise.max_height = vpu_fmt->max_height;
>> +	fsize->stepwise.step_height = 1;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_enum_fmt_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "index : %d\n", f->index);
>> +
>> +	vpu_fmt = wave5_find_vpu_fmt_by_idx(f->index, VPU_FMT_TYPE_CODEC);
>> +	if (!vpu_fmt)
>> +		return -EINVAL;
>> +
>> +	f->pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +	f->flags = 0;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_try_fmt_cap(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "fourcc: %d width %d height %d num_planes %d field : %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.field);
>> +
>> +	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
>> +		return -EINVAL;
>> +
>> +	vpu_fmt = wave5_find_vpu_format(f->fmt.pix_mp.pixelformat, VPU_FMT_TYPE_CODEC);
>> +	if (!vpu_fmt) {
>> +		f->fmt.pix_mp.pixelformat = inst->dst_fmt.pixelformat;
>> +		f->fmt.pix_mp.num_planes = inst->dst_fmt.num_planes;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, inst->dst_fmt.width, inst->dst_fmt.height);
>> +	} else {
>> +		int width = clamp(f->fmt.pix_mp.width, vpu_fmt->min_width, vpu_fmt->max_width);
>> +		int height = clamp(f->fmt.pix_mp.height, vpu_fmt->min_height, vpu_fmt->max_height);
>> +
>> +		f->fmt.pix_mp.pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +		f->fmt.pix_mp.num_planes = 1;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, width, height);
>> +	}
>> +
>> +	f->fmt.pix_mp.flags = 0;
>> +	f->fmt.pix_mp.field = V4L2_FIELD_NONE;
>> +	f->fmt.pix_mp.colorspace = inst->colorspace;
>> +	f->fmt.pix_mp.ycbcr_enc = inst->ycbcr_enc;
>> +	f->fmt.pix_mp.hsv_enc = inst->hsv_enc;
>> +	f->fmt.pix_mp.quantization = inst->quantization;
>> +	f->fmt.pix_mp.xfer_func = inst->xfer_func;
>> +	memset(&f->fmt.pix_mp.reserved, 0, sizeof(f->fmt.pix_mp.reserved));
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_s_fmt_cap(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i, ret;
>> +
>> +	dev_dbg(inst->dev->dev, "4cc %d width %d height %d num_planes %d field %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.field);
>> +
>> +	ret = wave5_vpu_enc_try_fmt_cap(file, fh, f);
>> +	if (ret)
>> +		return ret;
>> +
>> +	inst->dst_fmt.width = f->fmt.pix_mp.width;
>> +	inst->dst_fmt.height = f->fmt.pix_mp.height;
>> +	inst->dst_fmt.pixelformat = f->fmt.pix_mp.pixelformat;
>> +	inst->dst_fmt.field = f->fmt.pix_mp.field;
>> +	inst->dst_fmt.flags = f->fmt.pix_mp.flags;
>> +	inst->dst_fmt.num_planes = f->fmt.pix_mp.num_planes;
>> +	for (i = 0; i < inst->dst_fmt.num_planes; i++) {
>> +		inst->dst_fmt.plane_fmt[i].bytesperline = f->fmt.pix_mp.plane_fmt[i].bytesperline;
>> +		inst->dst_fmt.plane_fmt[i].sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_g_fmt_cap(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	f->fmt.pix_mp.width = inst->dst_fmt.width;
>> +	f->fmt.pix_mp.height = inst->dst_fmt.height;
>> +	f->fmt.pix_mp.pixelformat = inst->dst_fmt.pixelformat;
>> +	f->fmt.pix_mp.field = inst->dst_fmt.field;
>> +	f->fmt.pix_mp.flags = inst->dst_fmt.flags;
>> +	f->fmt.pix_mp.num_planes = inst->dst_fmt.num_planes;
>> +	for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
>> +		f->fmt.pix_mp.plane_fmt[i].bytesperline = inst->dst_fmt.plane_fmt[i].bytesperline;
>> +		f->fmt.pix_mp.plane_fmt[i].sizeimage = inst->dst_fmt.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	f->fmt.pix_mp.colorspace = inst->colorspace;
>> +	f->fmt.pix_mp.ycbcr_enc = inst->ycbcr_enc;
>> +	f->fmt.pix_mp.hsv_enc = inst->hsv_enc;
>> +	f->fmt.pix_mp.quantization = inst->quantization;
>> +	f->fmt.pix_mp.xfer_func = inst->xfer_func;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_enum_fmt_out(struct file *file, void *fh, struct v4l2_fmtdesc *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "index : %d\n", f->index);
>> +
>> +	vpu_fmt = wave5_find_vpu_fmt_by_idx(f->index, VPU_FMT_TYPE_RAW);
>> +	if (!vpu_fmt)
>> +		return -EINVAL;
>> +
>> +	f->pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +	f->flags = 0;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_try_fmt_out(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	const struct vpu_format *vpu_fmt;
>> +
>> +	dev_dbg(inst->dev->dev, "4cc %d width %d height %d num_planes %d field %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.field);
>> +
>> +	if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> +		return -EINVAL;
>> +
>> +	vpu_fmt = wave5_find_vpu_format(f->fmt.pix_mp.pixelformat, VPU_FMT_TYPE_RAW);
>> +	if (!vpu_fmt) {
>> +		f->fmt.pix_mp.pixelformat = inst->src_fmt.pixelformat;
>> +		f->fmt.pix_mp.num_planes = inst->src_fmt.num_planes;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, inst->src_fmt.width, inst->src_fmt.height);
>> +	} else {
>> +		int width = clamp(f->fmt.pix_mp.width, vpu_fmt->min_width, vpu_fmt->max_width);
>> +		int height = clamp(f->fmt.pix_mp.height, vpu_fmt->min_height, vpu_fmt->max_height);
>> +		const struct v4l2_format_info *info = v4l2_format_info(vpu_fmt->v4l2_pix_fmt);
>> +
>> +		f->fmt.pix_mp.pixelformat = vpu_fmt->v4l2_pix_fmt;
>> +		f->fmt.pix_mp.num_planes = info->mem_planes;
>> +		wave5_update_pix_fmt(&f->fmt.pix_mp, width, height);
>> +	}
>> +
>> +	f->fmt.pix_mp.flags = 0;
>> +	f->fmt.pix_mp.field = V4L2_FIELD_NONE;
>> +	memset(&f->fmt.pix_mp.reserved, 0, sizeof(f->fmt.pix_mp.reserved));
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_s_fmt_out(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i, ret;
>> +
>> +	dev_dbg(inst->dev->dev, "4cc %d width %d height %d num_planes %d field : %d\n",
>> +		f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
>> +		f->fmt.pix_mp.num_planes, f->fmt.pix_mp.field);
>> +
>> +	ret = wave5_vpu_enc_try_fmt_out(file, fh, f);
>> +	if (ret)
>> +		return ret;
>> +
>> +	inst->src_fmt.width = f->fmt.pix_mp.width;
>> +	inst->src_fmt.height = f->fmt.pix_mp.height;
>> +	inst->src_fmt.pixelformat = f->fmt.pix_mp.pixelformat;
>> +	inst->src_fmt.field = f->fmt.pix_mp.field;
>> +	inst->src_fmt.flags = f->fmt.pix_mp.flags;
>> +	inst->src_fmt.num_planes = f->fmt.pix_mp.num_planes;
>> +	for (i = 0; i < inst->src_fmt.num_planes; i++) {
>> +		inst->src_fmt.plane_fmt[i].bytesperline = f->fmt.pix_mp.plane_fmt[i].bytesperline;
>> +		inst->src_fmt.plane_fmt[i].sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	inst->colorspace = f->fmt.pix_mp.colorspace;
>> +	inst->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
>> +	inst->hsv_enc = f->fmt.pix_mp.hsv_enc;
>> +	inst->quantization = f->fmt.pix_mp.quantization;
>> +	inst->xfer_func = f->fmt.pix_mp.xfer_func;
>> +
>> +	wave5_update_pix_fmt(&inst->dst_fmt, f->fmt.pix_mp.width, f->fmt.pix_mp.height);
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_g_fmt_out(struct file *file, void *fh, struct v4l2_format *f)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int i;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	f->fmt.pix_mp.width = inst->src_fmt.width;
>> +	f->fmt.pix_mp.height = inst->src_fmt.height;
>> +	f->fmt.pix_mp.pixelformat = inst->src_fmt.pixelformat;
>> +	f->fmt.pix_mp.field = inst->src_fmt.field;
>> +	f->fmt.pix_mp.flags = inst->src_fmt.flags;
>> +	f->fmt.pix_mp.num_planes = inst->src_fmt.num_planes;
>> +	for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
>> +		f->fmt.pix_mp.plane_fmt[i].bytesperline = inst->src_fmt.plane_fmt[i].bytesperline;
>> +		f->fmt.pix_mp.plane_fmt[i].sizeimage = inst->src_fmt.plane_fmt[i].sizeimage;
>> +	}
>> +
>> +	f->fmt.pix_mp.colorspace = inst->colorspace;
>> +	f->fmt.pix_mp.ycbcr_enc = inst->ycbcr_enc;
>> +	f->fmt.pix_mp.hsv_enc = inst->hsv_enc;
>> +	f->fmt.pix_mp.quantization = inst->quantization;
>> +	f->fmt.pix_mp.xfer_func = inst->xfer_func;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d | target : %d\n", s->type, s->target);
>> +
>> +	if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
>> +		switch (s->target) {
>> +		case V4L2_SEL_TGT_CROP_DEFAULT:
>> +		case V4L2_SEL_TGT_CROP_BOUNDS:
>> +			s->r.left = 0;
>> +			s->r.top = 0;
>> +			s->r.width = inst->src_fmt.width;
>> +			s->r.height = inst->src_fmt.height;
>> +			break;
>> +		case V4L2_SEL_TGT_CROP:
>> +			s->r.left = 0;
>> +			s->r.top = 0;
>> +			s->r.width = inst->dst_fmt.width;
>> +			s->r.height = inst->dst_fmt.height;
>> +			dev_dbg(inst->dev->dev, "V4L2_SEL_TGT_CROP width : %d | height : %d\n",
>> +				s->r.width, s->r.height);
>> +			break;
>> +		default:
>> +			return -EINVAL;
>> +		}
>> +	} else {
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d | target : %d\n", s->type, s->target);
>> +
>> +	if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> 
> Reverse this if statement.  Pull the code in a tab.  Always do error
> handling, never do success handling.> 
>> +		switch (s->target) {
>> +		case V4L2_SEL_TGT_CROP:
>> +			dev_dbg(inst->dev->dev, "V4L2_SEL_TGT_CROP width : %d | height : %d\n",
>> +				s->r.width, s->r.height);
>> +			inst->dst_fmt.width = s->r.width;
>> +			inst->dst_fmt.height = s->r.height;
>> +			break;
>> +		default:
>> +			return -EINVAL;
>> +		}
>> +	} else {
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_try_encoder_cmd(struct file *file, void *fh, struct v4l2_encoder_cmd *ec)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	if (ec->cmd != V4L2_ENC_CMD_STOP && ec->cmd != V4L2_ENC_CMD_START)
>> +		return -EINVAL;
>> +
>> +	ec->flags = 0;
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_encoder_cmd(struct file *file, void *fh, struct v4l2_encoder_cmd *ec)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +	int ret;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	ret = wave5_vpu_enc_try_encoder_cmd(file, fh, ec);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	if (!wave5_vpu_both_queues_are_streaming(inst))
>> +		return 0;
>> +
>> +	switch (ec->cmd) {
>> +	case V4L2_ENC_CMD_STOP:
>> +		wave5_vpu_enc_stop_encode(inst);
>> +		break;
>> +	case V4L2_ENC_CMD_START:
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_subscribe_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type %d | id : %d | flags : %d\n", sub->type, sub->id, sub->flags);
>> +
>> +	switch (sub->type) {
>> +	case V4L2_EVENT_EOS:
>> +		return v4l2_event_subscribe(fh, sub, 0, NULL);
>> +	case V4L2_EVENT_CTRL:
>> +		return v4l2_ctrl_subscribe_event(fh, sub);
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +}
>> +
>> +static int wave5_vpu_enc_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d\n", a->type);
>> +
>> +	if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> +		return -EINVAL;
>> +
>> +	a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
>> +	a->parm.output.timeperframe.numerator = 1;
>> +	a->parm.output.timeperframe.denominator = inst->frame_rate;
>> +
>> +	dev_dbg(inst->dev->dev, "numerator : %d | denominator : %d\n",
>> +		a->parm.output.timeperframe.numerator,
>> +			a->parm.output.timeperframe.denominator);
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
>> +{
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(fh);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d\n", a->type);
>> +
>> +	if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> +		return -EINVAL;
>> +
>> +	a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
>> +	if (a->parm.output.timeperframe.denominator && a->parm.output.timeperframe.numerator) {
>> +		inst->frame_rate = a->parm.output.timeperframe.denominator /
>> +				   a->parm.output.timeperframe.numerator;
>> +	} else {
>> +		a->parm.output.timeperframe.numerator = 1;
>> +		a->parm.output.timeperframe.denominator = inst->frame_rate;
>> +	}
>> +
>> +	dev_dbg(inst->dev->dev, "numerator : %d | denominator : %d\n",
>> +		a->parm.output.timeperframe.numerator,
>> +			a->parm.output.timeperframe.denominator);
> 
> Fix indenting.
> 
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct v4l2_ioctl_ops wave5_vpu_enc_ioctl_ops = {
>> +	.vidioc_querycap = wave5_vpu_enc_querycap,
>> +	.vidioc_enum_framesizes = wave5_vpu_enc_enum_framesizes,
>> +
>> +	.vidioc_enum_fmt_vid_cap	= wave5_vpu_enc_enum_fmt_cap,
>> +	.vidioc_s_fmt_vid_cap_mplane = wave5_vpu_enc_s_fmt_cap,
>> +	.vidioc_g_fmt_vid_cap_mplane = wave5_vpu_enc_g_fmt_cap,
>> +	.vidioc_try_fmt_vid_cap_mplane = wave5_vpu_enc_try_fmt_cap,
>> +
>> +	.vidioc_enum_fmt_vid_out	= wave5_vpu_enc_enum_fmt_out,
>> +	.vidioc_s_fmt_vid_out_mplane = wave5_vpu_enc_s_fmt_out,
>> +	.vidioc_g_fmt_vid_out_mplane = wave5_vpu_enc_g_fmt_out,
>> +	.vidioc_try_fmt_vid_out_mplane = wave5_vpu_enc_try_fmt_out,
>> +
>> +	.vidioc_g_selection = wave5_vpu_enc_g_selection,
>> +	.vidioc_s_selection = wave5_vpu_enc_s_selection,
>> +
>> +	.vidioc_g_parm = wave5_vpu_enc_g_parm,
>> +	.vidioc_s_parm = wave5_vpu_enc_s_parm,
>> +
>> +	.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
>> +	.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
>> +	.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
>> +	.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
>> +	.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
>> +	.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
>> +	.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
>> +	.vidioc_streamon = v4l2_m2m_ioctl_streamon,
>> +	.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>> +
>> +	.vidioc_try_encoder_cmd = wave5_vpu_enc_try_encoder_cmd,
>> +	.vidioc_encoder_cmd = wave5_vpu_enc_encoder_cmd,
>> +
>> +	.vidioc_subscribe_event = wave5_vpu_enc_subscribe_event,
>> +	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
>> +};
>> +
>> +static int wave5_vpu_enc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> +	struct vpu_instance *inst = wave5_ctrl_to_vpu_inst(ctrl);
>> +
>> +	dev_dbg(inst->dev->dev, "name : %s\n", ctrl->name);
>> +
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
>> +		if (inst->state != VPU_INST_STATE_NONE && inst->state != VPU_INST_STATE_OPEN)
>> +			ctrl->val = inst->min_src_frame_buf_count;
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	dev_dbg(inst->dev->dev, "value : %d\n", ctrl->val);
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_s_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> +	struct vpu_instance *inst = wave5_ctrl_to_vpu_inst(ctrl);
>> +
>> +	dev_dbg(inst->dev->dev, "name : %s | value : %d\n", ctrl->name, ctrl->val);
>> +
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_HFLIP:
>> +		inst->mirror_direction |= (ctrl->val << 1);
>> +		break;
>> +	case V4L2_CID_VFLIP:
>> +		inst->mirror_direction |= ctrl->val;
>> +		break;
>> +	case V4L2_CID_ROTATE:
>> +		inst->rot_angle = ctrl->val;
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
>> +		inst->vbv_buf_size = ctrl->val;
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
>> +		switch (ctrl->val) {
>> +		case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN:
>> +			inst->profile = HEVC_PROFILE_MAIN;
>> +			inst->bit_depth = 8;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE:
>> +			inst->profile = HEVC_PROFILE_STILLPICTURE;
>> +			inst->bit_depth = 8;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10:
>> +			inst->profile = HEVC_PROFILE_MAIN10;
>> +			inst->bit_depth = 10;
>> +			break;
>> +		default:
>> +			inst->profile = 0;
>> +			inst->bit_depth = 0;
>> +			break;
>> +		}
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
>> +		switch (ctrl->val) {
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_1:
>> +			inst->level = 10 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_2:
>> +			inst->level = 20 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1:
>> +			inst->level = 21 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_3:
>> +			inst->level = 30 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1:
>> +			inst->level = 31 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_4:
>> +			inst->level = 40 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1:
>> +			inst->level = 41 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_5:
>> +			inst->level = 50 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1:
>> +			inst->level = 51 * 3;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2:
>> +			inst->level = 52 * 3;
>> +			break;
>> +		default:
>> +			inst->level = 0;
>> +			break;
>> +		}
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP:
>> +		inst->min_qp_i = ctrl->val;
>> +		inst->min_qp_p = ctrl->val;
>> +		inst->min_qp_b = ctrl->val;
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP:
>> +		inst->max_qp_i = ctrl->val;
>> +		inst->max_qp_p = ctrl->val;
>> +		inst->max_qp_b = ctrl->val;
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
>> +		switch (ctrl->val) {
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE:
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE:
>> +			inst->profile = H264_PROFILE_BP;
>> +			inst->bit_depth = 8;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN:
>> +			inst->profile = H264_PROFILE_MP;
>> +			inst->bit_depth = 8;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED:
>> +			inst->profile = H264_PROFILE_EXTENDED;
>> +			inst->bit_depth = 8;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH:
>> +			inst->profile = H264_PROFILE_HP;
>> +			inst->bit_depth = 8;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10:
>> +			inst->profile = H264_PROFILE_HIGH10;
>> +			inst->bit_depth = 10;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422:
>> +			inst->profile = H264_PROFILE_HIGH422;
>> +			inst->bit_depth = 10;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_PREDICTIVE:
>> +			inst->profile = H264_PROFILE_HIGH444;
>> +			inst->bit_depth = 10;
>> +			break;
>> +		default:
>> +			inst->profile = 0;
>> +			inst->bit_depth = 0;
>> +			break;
>> +		}
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
>> +		switch (ctrl->val) {
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
>> +			inst->level = 10;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
>> +			inst->level = 9;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
>> +			inst->level = 11;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
>> +			inst->level = 12;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
>> +			inst->level = 13;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
>> +			inst->level = 20;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
>> +			inst->level = 21;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
>> +			inst->level = 22;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
>> +			inst->level = 30;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
>> +			inst->level = 31;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
>> +			inst->level = 32;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
>> +			inst->level = 40;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
>> +			inst->level = 41;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
>> +			inst->level = 42;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_5_0:
>> +			inst->level = 50;
>> +			break;
>> +		case V4L2_MPEG_VIDEO_H264_LEVEL_5_1:
>> +			inst->level = 51;
>> +			break;
>> +		default:
>> +			inst->level = 0;
>> +			break;
>> +		}
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
>> +		inst->min_qp_i = ctrl->val;
>> +		inst->min_qp_p = ctrl->val;
>> +		inst->min_qp_b = ctrl->val;
>> +		break;
>> +	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
>> +		inst->max_qp_i = ctrl->val;
>> +		inst->max_qp_p = ctrl->val;
>> +		inst->max_qp_b = ctrl->val;
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct v4l2_ctrl_ops wave5_vpu_enc_ctrl_ops = {
>> +	.g_volatile_ctrl = wave5_vpu_enc_g_volatile_ctrl,
>> +	.s_ctrl = wave5_vpu_enc_s_ctrl,
>> +};
>> +
>> +static void wave5_set_default_enc_openparam(struct enc_open_param *open_param)
>> +{
>> +	unsigned int i;
>> +
>> +	open_param->stream_endian = VPU_STREAM_ENDIAN;
>> +	open_param->source_endian = VPU_SOURCE_ENDIAN;
>> +	open_param->line_buf_int_en = TRUE;
>> +
>> +	open_param->wave_param.gop_preset_idx = PRESET_IDX_IPP_SINGLE;
>> +	open_param->wave_param.decoding_refresh_type = 1;
>> +	open_param->wave_param.intra_qp = 30;
>> +	open_param->wave_param.tmvp_enable = 1;
>> +	open_param->wave_param.max_num_merge = 2;
>> +	open_param->wave_param.lf_cross_slice_boundary_enable = 1;
>> +	open_param->wave_param.skip_intra_trans = 1;
>> +	open_param->wave_param.sao_enable = 1;
>> +	open_param->wave_param.transform8x8_enable = 1;
>> +	open_param->wave_param.intra_nx_n_enable = 1;
>> +	for (i = 0; i < MAX_GOP_NUM; i++)
>> +		open_param->wave_param.fixed_bit_ratio[i] = 1;
>> +	open_param->wave_param.cu_level_rc_enable = 1;
>> +	open_param->wave_param.hvs_qp_enable = 1;
>> +	open_param->wave_param.hvs_qp_scale = 2;
>> +	open_param->wave_param.hvs_max_delta_qp = 10;
>> +	open_param->wave_param.gop_param.custom_gop_size = 1;
>> +	open_param->wave_param.initial_rc_qp = -1;
>> +	open_param->wave_param.nr_intra_weight_y = 7;
>> +	open_param->wave_param.nr_intra_weight_cb = 7;
>> +	open_param->wave_param.nr_intra_weight_cr = 7;
>> +	open_param->wave_param.nr_inter_weight_y = 4;
>> +	open_param->wave_param.nr_inter_weight_cb = 4;
>> +	open_param->wave_param.nr_inter_weight_cr = 4;
>> +	open_param->wave_param.strong_intra_smooth_enable = 1;
>> +	open_param->wave_param.bg_thr_diff = 8;
>> +	open_param->wave_param.bg_thr_mean_diff = 1;
>> +	open_param->wave_param.bg_lambda_qp = 32;
>> +	open_param->wave_param.bg_delta_qp = 3;
>> +	open_param->wave_param.rdo_skip = 1;
>> +	open_param->wave_param.intra_mb_refresh_arg = 1;
>> +	open_param->wave_param.entropy_coding_mode = 1;
>> +	open_param->wave_param.rc_weight_param = 16;
>> +	open_param->wave_param.rc_weight_buf = 128;
>> +	open_param->wave_param.lambda_scaling_enable = 1;
>> +}
>> +
>> +static int wave5_vpu_enc_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
>> +				     unsigned int *num_planes, unsigned int sizes[],
>> +			       struct device *alloc_devs[])
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(q);
>> +	struct v4l2_pix_format_mplane inst_format =
>> +		(q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ? inst->src_fmt : inst->dst_fmt;
>> +	unsigned int i;
>> +
>> +	dev_dbg(inst->dev->dev, "num_buffers : %d | num_planes : %d | type : %d\n", *num_buffers,
>> +		*num_planes, q->type);
>> +
>> +	if (*num_planes) {
>> +		if (inst_format.num_planes != *num_planes)
>> +			return -EINVAL;
>> +
>> +		for (i = 0; i < *num_planes; i++) {
>> +			if (sizes[i] < inst_format.plane_fmt[i].sizeimage)
>> +				return -EINVAL;
>> +		}
>> +	} else {
>> +		*num_planes = inst_format.num_planes;
>> +		for (i = 0; i < *num_planes; i++) {
>> +			sizes[i] = inst_format.plane_fmt[i].sizeimage;
>> +			dev_dbg(inst->dev->dev, "size[%d] : %d\n", i, sizes[i]);
>> +		}
>> +	}
>> +
>> +	dev_dbg(inst->dev->dev, "size : %d\n", sizes[0]);
>> +
>> +	if (inst->state == VPU_INST_STATE_NONE && q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
>> +		int ret;
>> +		u32 non_linear_num = 0;
>> +		unsigned int fb_stride = 0;
>> +		u32 fb_height = 0;
>> +		struct enc_open_param open_param;
>> +		struct enc_initial_info initial_info;
>> +
>> +		memset(&open_param, 0, sizeof(struct enc_open_param));
>> +		wave5_set_default_enc_openparam(&open_param);
>> +
>> +		inst->std = wave5_to_vpu_wavestd(inst->dst_fmt.pixelformat);
>> +		if (inst->std == STD_UNKNOWN) {
>> +			dev_warn(inst->dev->dev, "unsupported pixelformat: %.4s\n",
>> +				 (char *)&inst->dst_fmt.pixelformat);
>> +			return -EINVAL;
>> +		}
>> +		open_param.pic_width = inst->dst_fmt.width;
>> +		open_param.pic_height = inst->dst_fmt.height;
>> +		open_param.frame_rate_info = inst->frame_rate;
>> +		open_param.vbv_buffer_size = inst->vbv_buf_size;
>> +		open_param.wave_param.profile = inst->profile;
>> +		open_param.wave_param.level = inst->level;
>> +		open_param.wave_param.internal_bit_depth = inst->bit_depth;
>> +		open_param.wave_param.min_qp_i = inst->min_qp_i;
>> +		open_param.wave_param.max_qp_i = inst->max_qp_i;
>> +		open_param.wave_param.min_qp_p = inst->min_qp_p;
>> +		open_param.wave_param.max_qp_p = inst->max_qp_p;
>> +		open_param.wave_param.min_qp_b = inst->min_qp_b;
>> +		open_param.wave_param.max_qp_b = inst->max_qp_b;
>> +
>> +		ret = wave5_vpu_enc_open(inst, &open_param);
>> +		if (ret) {
>> +			dev_dbg(inst->dev->dev, "failed wave5_vpu_enc_open : %d\n", ret);
>> +			return -EINVAL;
>> +		}
>> +
>> +		inst->state = VPU_INST_STATE_OPEN;
>> +
>> +		//wave5_vpu_enc_give_command(inst, ENABLE_LOGGING, 0);
>> +
>> +		if (inst->mirror_direction) {
>> +			wave5_vpu_enc_give_command(inst, ENABLE_MIRRORING, 0);
>> +			wave5_vpu_enc_give_command(inst, SET_MIRROR_DIRECTION, &inst->mirror_direction);
>> +		}
>> +		if (inst->rot_angle) {
>> +			wave5_vpu_enc_give_command(inst, ENABLE_ROTATION, 0);
>> +			wave5_vpu_enc_give_command(inst, SET_ROTATION_ANGLE, &inst->rot_angle);
>> +		}
>> +
>> +		ret = wave5_vpu_enc_issue_seq_init(inst);
>> +		if (ret) {
>> +			dev_dbg(inst->dev->dev, "failed wave5_vpu_enc_issue_seq_init() : %d\n",
>> +				ret);
>> +			return -EINVAL;
>> +		}
>> +
>> +		if (wave5_vpu_wait_interrupt(inst, VPU_ENC_TIMEOUT) < 0) {
>> +			dev_dbg(inst->dev->dev, "failed to call wave5_vpu_wait_interrupt()\n");
>> +			return -EINVAL;
>> +		}
>> +
>> +		ret = wave5_vpu_enc_complete_seq_init(inst, &initial_info);
>> +		if (ret)
>> +			return -EINVAL;
>> +
>> +		dev_dbg(inst->dev->dev, "min_frame_buffer : %d | min_source_buffer : %d\n",
>> +			initial_info.min_frame_buffer_count, initial_info.min_src_frame_count);
>> +		inst->state = VPU_INST_STATE_INIT_SEQ;
>> +		inst->min_src_frame_buf_count = initial_info.min_src_frame_count +
>> +						COMMAND_QUEUE_DEPTH;
>> +		inst->min_dst_frame_buf_count = initial_info.min_frame_buffer_count;
>> +		*num_buffers = inst->min_src_frame_buf_count;
>> +		dev_dbg(inst->dev->dev, "source buffer num : %d", *num_buffers);
>> +
>> +		non_linear_num = inst->min_dst_frame_buf_count;
>> +
>> +		fb_stride = inst->dst_fmt.width;
>> +		fb_height = inst->dst_fmt.height;
>> +
>> +		for (i = 0; i < non_linear_num; i++) {
>> +			u32 luma_size = fb_stride * fb_height;
>> +			u32 chroma_size = ALIGN(fb_stride / 2, 16) * fb_height;
>> +
>> +			inst->frame_vbuf[i].size = luma_size + chroma_size;
>> +			if (wave5_vdi_allocate_dma_memory(inst->dev, &inst->frame_vbuf[i]) < 0)
>> +				dev_dbg(inst->dev->dev, "failed to allocate FBC buffer : %zu\n",
>> +					inst->frame_vbuf[i].size);
>> +
>> +			inst->frame_buf[i].buf_y = inst->frame_vbuf[i].daddr;
>> +			inst->frame_buf[i].buf_cb = (dma_addr_t)-1;
>> +			inst->frame_buf[i].buf_cr = (dma_addr_t)-1;
>> +			inst->frame_buf[i].update_fb_info = TRUE;
>> +			inst->frame_buf[i].size = inst->frame_vbuf[i].size;
>> +		}
>> +
>> +		ret = wave5_vpu_enc_register_frame_buffer(inst, non_linear_num, fb_stride, fb_height,
>> +							  COMPRESSED_FRAME_MAP);
>> +		if (ret) {
>> +			dev_dbg(inst->dev->dev, "failed wave5_vpu_enc_register_frame_buffer %d\n",
>> +				ret);
>> +			return -EINVAL;
> 
> Preserve the error code.  "return ret;"
> 
>> +		}
>> +
>> +		inst->state = VPU_INST_STATE_PIC_RUN;
>> +	}
>> +
>> +	if (inst->state != VPU_INST_STATE_NONE && inst->state != VPU_INST_STATE_OPEN &&
>> +	    q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
>> +		*num_buffers = inst->min_src_frame_buf_count;
>> +		dev_dbg(inst->dev->dev, "source buffer num : %d", *num_buffers);
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_buf_init(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] %4ld size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +
>> +	return 0;
>> +}
> 
> Delete.
> 
>> +
>> +static int wave5_vpu_enc_buf_prepare(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +
>> +	return 0;
>> +}
> 
> Delete.
> 
>> +
>> +static void wave5_vpu_enc_buf_queue(struct vb2_buffer *vb)
>> +{
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vpu_buffer *vpu_buf = wave5_to_vpu_buf(vbuf);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] : %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +
>> +	if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> +		vbuf->sequence = inst->queued_src_buf_num++;
>> +	else
>> +		vbuf->sequence = inst->queued_dst_buf_num++;
>> +
>> +	vpu_buf->consumed = FALSE;
>> +	v4l2_m2m_buf_queue(inst->v4l2_fh.m2m_ctx, vbuf);
>> +}
>> +
>> +static void wave5_vpu_enc_buf_finish(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] : %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +}
> 
> Delete.
> 
>> +
>> +static void wave5_vpu_enc_buf_cleanup(struct vb2_buffer *vb)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
>> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +
>> +	dev_dbg(inst->dev->dev, "type %4d index %4d size[0] %4ld size[1] : %4ld | size[2] : %4ld\n",
>> +		vb->type, vb->index, vb2_plane_size(&vbuf->vb2_buf, 0),
>> +		vb2_plane_size(&vbuf->vb2_buf, 1), vb2_plane_size(&vbuf->vb2_buf, 2));
>> +}
> 
> Delete.
> 
>> +
>> +static int wave5_vpu_enc_start_streaming(struct vb2_queue *q, unsigned int count)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(q);
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d\n", q->type);
>> +	return 0;
>> +}
> 
> Delete.
> 
>> +
>> +static void wave5_vpu_enc_stop_streaming(struct vb2_queue *q)
>> +{
>> +	struct vpu_instance *inst = vb2_get_drv_priv(q);
>> +	struct vb2_v4l2_buffer *buf;
>> +
>> +	dev_dbg(inst->dev->dev, "type : %d\n", q->type);
>> +
>> +	if (wave5_vpu_both_queues_are_streaming(inst))
>> +		inst->state = VPU_INST_STATE_STOP;
>> +
>> +	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
>> +		while ((buf = v4l2_m2m_src_buf_remove(inst->v4l2_fh.m2m_ctx))) {
>> +			dev_dbg(inst->dev->dev, "buf type : %4d | index : %4d\n",
>> +				buf->vb2_buf.type, buf->vb2_buf.index);
>> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
>> +		}
>> +	} else {
>> +		while ((buf = v4l2_m2m_dst_buf_remove(inst->v4l2_fh.m2m_ctx))) {
>> +			dev_dbg(inst->dev->dev, "buf type : %4d | index : %4d\n",
>> +				buf->vb2_buf.type, buf->vb2_buf.index);
>> +			vb2_set_plane_payload(&buf->vb2_buf, 0, 0);
>> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
>> +		}
>> +	}
>> +}
>> +
>> +static const struct vb2_ops wave5_vpu_enc_vb2_ops = {
>> +	.queue_setup = wave5_vpu_enc_queue_setup,
>> +	.wait_prepare = vb2_ops_wait_prepare,
>> +	.wait_finish = vb2_ops_wait_finish,
>> +	.buf_init = wave5_vpu_enc_buf_init,
>> +	.buf_prepare = wave5_vpu_enc_buf_prepare,
>> +	.buf_queue = wave5_vpu_enc_buf_queue,
>> +	.buf_finish = wave5_vpu_enc_buf_finish,
>> +	.buf_cleanup = wave5_vpu_enc_buf_cleanup,
>> +	.start_streaming = wave5_vpu_enc_start_streaming,
>> +	.stop_streaming = wave5_vpu_enc_stop_streaming,
>> +};
>> +
>> +static void wave5_set_default_format(struct v4l2_pix_format_mplane *src_fmt,
>> +				     struct v4l2_pix_format_mplane *dst_fmt)
>> +{
>> +	unsigned int src_pix_fmt = wave5_vpu_enc_fmt_list[VPU_FMT_TYPE_RAW][0].v4l2_pix_fmt;
>> +	const struct v4l2_format_info *src_fmt_info = v4l2_format_info(src_pix_fmt);
>> +
>> +	src_fmt->pixelformat = src_pix_fmt;
>> +	src_fmt->field = V4L2_FIELD_NONE;
>> +	src_fmt->flags = 0;
>> +	src_fmt->num_planes = src_fmt_info->mem_planes;
>> +	wave5_update_pix_fmt(src_fmt, 416, 240);
>> +
>> +	dst_fmt->pixelformat = wave5_vpu_enc_fmt_list[VPU_FMT_TYPE_CODEC][0].v4l2_pix_fmt;
>> +	dst_fmt->field = V4L2_FIELD_NONE;
>> +	dst_fmt->flags = 0;
>> +	dst_fmt->num_planes = 1;
>> +	wave5_update_pix_fmt(dst_fmt, 416, 240);
>> +}
>> +
>> +static int wave5_vpu_enc_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
>> +{
>> +	struct vpu_instance *inst = priv;
>> +	int ret;
>> +
>> +	dev_dbg(inst->dev->dev, "\n");
> 
> Delete.
> 
>> +
>> +	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
>> +	src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
>> +	src_vq->mem_ops = &vb2_dma_contig_memops;
>> +	src_vq->ops = &wave5_vpu_enc_vb2_ops;
>> +	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> +	src_vq->buf_struct_size = sizeof(struct vpu_buffer);
>> +	src_vq->allow_zero_bytesused = 1;
>> +	src_vq->min_buffers_needed = 0;
>> +	src_vq->drv_priv = inst;
>> +	src_vq->lock = &inst->dev->dev_lock;
>> +	src_vq->dev = inst->dev->v4l2_dev.dev;
>> +	ret = vb2_queue_init(src_vq);
>> +	if (ret)
>> +		return ret;
>> +
>> +	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
>> +	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
>> +	dst_vq->mem_ops = &vb2_dma_contig_memops;
>> +	dst_vq->ops = &wave5_vpu_enc_vb2_ops;
>> +	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> +	dst_vq->buf_struct_size = sizeof(struct vpu_buffer);
>> +	dst_vq->allow_zero_bytesused = 1;
>> +	dst_vq->min_buffers_needed = 0;
>> +	dst_vq->drv_priv = inst;
>> +	dst_vq->lock = &inst->dev->dev_lock;
>> +	dst_vq->dev = inst->dev->v4l2_dev.dev;
>> +	ret = vb2_queue_init(dst_vq);
>> +	if (ret)
>> +		return ret;
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct vpu_instance_ops wave5_vpu_enc_inst_ops = {
>> +	.start_process = wave5_vpu_enc_start_encode,
>> +	.stop_process = wave5_vpu_enc_stop_encode,
>> +	.finish_process = wave5_vpu_enc_finish_encode,
>> +};
>> +
>> +static int wave5_vpu_open_enc(struct file *filp)
>> +{
>> +	struct video_device *vdev = video_devdata(filp);
>> +	struct vpu_device *dev = video_drvdata(filp);
>> +	struct vpu_instance *inst = NULL;
>> +	struct v4l2_ctrl_handler *v4l2_ctrl_hdl;
>> +	struct v4l2_ctrl *ctrl;
>> +
>> +	inst = kzalloc(sizeof(*inst), GFP_KERNEL);
>> +	if (!inst)
>> +		return -ENOMEM;
>> +	v4l2_ctrl_hdl = &inst->v4l2_ctrl_hdl;
>> +
>> +	inst->dev = dev;
>> +	inst->type = VPU_INST_TYPE_ENC;
>> +	inst->ops = &wave5_vpu_enc_inst_ops;
>> +
>> +	v4l2_fh_init(&inst->v4l2_fh, vdev);
>> +	filp->private_data = &inst->v4l2_fh;
>> +	v4l2_fh_add(&inst->v4l2_fh);
>> +
>> +	inst->v4l2_fh.m2m_ctx = v4l2_m2m_ctx_init(dev->v4l2_m2m_dev, inst, wave5_vpu_enc_queue_init);
>> +	if (IS_ERR(inst->v4l2_fh.m2m_ctx))
>> +		return -ENODEV;
>> +
>> +	v4l2_ctrl_handler_init(v4l2_ctrl_hdl, 30);
>> +	v4l2_ctrl_new_std_menu(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
>> +			       V4L2_CID_MPEG_VIDEO_HEVC_PROFILE,
>> +			 V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10, 0,
>> +				V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN);
> 
> Fix indenting.
> 
> 
>> +	v4l2_ctrl_new_std_menu(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
>> +			       V4L2_CID_MPEG_VIDEO_HEVC_LEVEL, V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1, 0,
>> +				V4L2_MPEG_VIDEO_HEVC_LEVEL_1);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP,
>> +			  0, 63, 1, 8);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP,
>> +			  0, 63, 1, 51);
>> +	v4l2_ctrl_new_std_menu(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
>> +			       V4L2_CID_MPEG_VIDEO_H264_PROFILE,
>> +			 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_PREDICTIVE, 0,
>> +				V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
> 
> Fix indenting.
> 
>> +	v4l2_ctrl_new_std_menu(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
>> +			       V4L2_CID_MPEG_VIDEO_H264_LEVEL, V4L2_MPEG_VIDEO_H264_LEVEL_5_1, 0,
>> +				V4L2_MPEG_VIDEO_H264_LEVEL_1_0);
> 
> Indenting.
> 
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_MIN_QP,
>> +			  0, 63, 1, 8);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
>> +			  0, 63, 1, 51);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_ROTATE, 0, 270, 90, 0);
>> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_MPEG_VIDEO_VBV_SIZE, 10,
>> +			  3000, 1, 3000);
>> +	ctrl = v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
>> +				 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 32, 1, 1);
>> +	if (ctrl)
>> +		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
>> +
>> +	if (inst->v4l2_ctrl_hdl.error)
>> +		return -ENODEV;
> 
> Preserve the error code?
> 
>> +
>> +	inst->v4l2_fh.ctrl_handler = v4l2_ctrl_hdl;
>> +	v4l2_ctrl_handler_setup(v4l2_ctrl_hdl);
>> +
>> +	wave5_set_default_format(&inst->src_fmt, &inst->dst_fmt);
>> +	inst->colorspace = V4L2_COLORSPACE_REC709;
>> +	inst->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
>> +	inst->hsv_enc = 0;
>> +	inst->quantization = V4L2_QUANTIZATION_DEFAULT;
>> +	inst->xfer_func = V4L2_XFER_FUNC_DEFAULT;
>> +	inst->frame_rate = 30;
>> +
>> +	return 0;
>> +}
>> +
>> +static int wave5_vpu_enc_release(struct file *filp)
>> +{
>> +	int i, ret;
>> +	struct vpu_instance *inst = wave5_to_vpu_inst(filp->private_data);
>> +	unsigned int loop_count = 0;
>> +	u32 fail_res = 0;
>> +
>> +	v4l2_m2m_ctx_release(inst->v4l2_fh.m2m_ctx);
>> +	if (inst->state != VPU_INST_STATE_NONE) {
>> +		ret = wave5_vpu_enc_close(inst, &fail_res);
>> +		while (fail_res == WAVE5_SYSERR_VPU_STILL_RUNNING) {
>> +			if (wave5_vpu_wait_interrupt(inst, VPU_ENC_TIMEOUT) < 0) {
>> +				dev_dbg(inst->dev->dev, "failed wave5_vpu_wait_interrupt()\n");
>> +				if (loop_count < 10) {
>> +					loop_count++;
>> +					continue;
> 
> 	if (loop_count++ >= 10) {
> 		dev_warn("inst->dev->dev, "failed wave5_vpu_enc_close()\n");
> 		break;
> 	}
> 
>> +				} else {
>> +					dev_dbg(inst->dev->dev, "failed wave5_vpu_enc_close()\n");
> 
> Make this a dev_warn().
> 
>> +					break;
>> +				}
>> +			}
>> +			fail_res = 0;
>> +			ret = wave5_vpu_enc_close(inst, &fail_res);
>> +		}
>> +		if (ret)
>> +			return ret;
>> +	}
>> +	for (i = 0; i < inst->min_dst_frame_buf_count; i++) {
>> +		if (inst->frame_vbuf[i].size != 0)
>> +			wave5_vdi_free_dma_memory(inst->dev, &inst->frame_vbuf[i]);
>> +	}
>> +	v4l2_ctrl_handler_free(&inst->v4l2_ctrl_hdl);
>> +	v4l2_fh_del(&inst->v4l2_fh);
>> +	v4l2_fh_exit(&inst->v4l2_fh);
>> +	kfree(inst);
>> +
>> +	return 0;
>> +}
> 

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