// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
/*
 * Copyright (C) 2025 Amlogic, Inc. All rights reserved
 */

#include <linux/cleanup.h>
#include <linux/pm_runtime.h>

#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-mc.h>
#include <media/videobuf2-dma-contig.h>

#include "c4-isp-common.h"
#include "hw/c4-isp-hw.h"
#include "hw/c4-isp-regs.h"

static const struct c4_isp_cap_format_info raw_formats[] = {
	/* RAW10 */
	{
		.code = MEDIA_BUS_FMT_SBGGR10_1X10,
		.fourcc = V4L2_PIX_FMT_SBGGR10,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	}, {
		.code = MEDIA_BUS_FMT_SGBRG10_1X10,
		.fourcc = V4L2_PIX_FMT_SGBRG10,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	}, {
		.code = MEDIA_BUS_FMT_SGRBG10_1X10,
		.fourcc = V4L2_PIX_FMT_SGRBG10,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	}, {
		.code = MEDIA_BUS_FMT_SRGGB10_1X10,
		.fourcc = V4L2_PIX_FMT_SRGGB10,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	},
	/* RAW12 */
	{
		.code = MEDIA_BUS_FMT_SBGGR12_1X12,
		.fourcc = V4L2_PIX_FMT_SBGGR12,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	}, {
		.code = MEDIA_BUS_FMT_SGBRG12_1X12,
		.fourcc = V4L2_PIX_FMT_SGBRG12,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	}, {
		.code = MEDIA_BUS_FMT_SGRBG12_1X12,
		.fourcc = V4L2_PIX_FMT_SGRBG12,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	}, {
		.code = MEDIA_BUS_FMT_SRGGB12_1X12,
		.fourcc = V4L2_PIX_FMT_SRGGB12,
		.num_planes = 2,
		.bpp[0] = 16,
		.bpp[1] = 16,
		.hdiv = 1,
		.vdiv = 1,
	},
};

static int c4_isp_raw_dummy_buff_create(struct c4_isp_capture *raw)
{
	struct c4_isp_data_buffer *dummy_buff = &raw->dummy_buff;
	struct v4l2_pix_format_mplane *pix_mp = &raw->format.pix_mp;

	if (pix_mp->num_planes == 1)
		dummy_buff->size = pix_mp->plane_fmt[C4_ISP_PLANE_Y].sizeimage;
	else
		dummy_buff->size =
			MAX(pix_mp->plane_fmt[C4_ISP_PLANE_Y].sizeimage,
			    pix_mp->plane_fmt[C4_ISP_PLANE_UV].sizeimage);

	/* The driver never access vaddr, no mapping is required */
	dummy_buff->vaddr = dma_alloc_attrs(raw->isp->dev, dummy_buff->size,
					    &dummy_buff->dma_addr, GFP_KERNEL,
					    DMA_ATTR_NO_KERNEL_MAPPING);
	if (!dummy_buff->vaddr)
		return -ENOMEM;

	return 0;
}

static void c4_isp_raw_dummy_buff_destroy(struct c4_isp_capture *raw)
{
	dma_free_attrs(raw->isp->dev, raw->dummy_buff.size,
		       raw->dummy_buff.vaddr, raw->dummy_buff.dma_addr,
		       DMA_ATTR_NO_KERNEL_MAPPING);
}

static void c4_isp_raw_cfg_wmif_fmt(struct c4_isp_capture *raw)
{
	struct v4l2_pix_format_mplane *pix_mp = &raw->format.pix_mp;
	const struct c4_isp_cap_format_info *info = raw->format.info;
	enum c4_isp_image_mode img_mode = raw->isp->core.cfg_info.img_mode;
	struct c4_isp_pyr_wmif_params wmif;

	wmif.id = C4_ISP_USER0_WMIF;
	wmif.chnl = C4_ISP_PYR_WMIF_CHNL_0;
	wmif.src_hsize = pix_mp->width;
	wmif.src_vsize = pix_mp->height;
	wmif.src_bits = info->bpp[0];
	wmif.ldf_vsize = 0;
	wmif.ldf_en = false;
	c4_isp_febe_cfg_user_wmif_fmt(raw->isp, &wmif);

	if (img_mode == C4_ISP_IMAGE_HDR) {
		wmif.id = C4_ISP_USER1_WMIF;
		wmif.chnl = C4_ISP_PYR_WMIF_CHNL_1;
		wmif.src_hsize = pix_mp->width;
		wmif.src_vsize = pix_mp->height;
		wmif.src_bits = info->bpp[1];
		wmif.ldf_vsize = 0;
		wmif.ldf_en = false;
		c4_isp_febe_cfg_user_wmif_fmt(raw->isp, &wmif);
	}
}

static void c4_isp_raw_cfg_wmif_buff(struct c4_isp_capture *raw)
{
	enum c4_isp_image_mode img_mode = raw->isp->core.cfg_info.img_mode;
	struct c4_isp_pyr_wmif_params wmif;
	dma_addr_t vc0_addr;
	dma_addr_t vc1_addr;

	if (raw->buff) {
		vc0_addr = raw->buff->dma_addr[C4_ISP_PLANE_Y];
		vc1_addr = raw->buff->dma_addr[C4_ISP_PLANE_UV];
	} else {
		vc0_addr = raw->dummy_buff.dma_addr;
		vc1_addr = raw->dummy_buff.dma_addr;
	}

	wmif.id = C4_ISP_USER0_WMIF;
	wmif.chnl = C4_ISP_PYR_WMIF_CHNL_0;
	wmif.addr = vc0_addr;
	c4_isp_febe_cfg_user_wmif_buff(raw->isp, &wmif);

	if (img_mode == C4_ISP_IMAGE_HDR) {
		wmif.id = C4_ISP_USER1_WMIF;
		wmif.chnl = C4_ISP_PYR_WMIF_CHNL_1;
		wmif.addr = vc1_addr;
		c4_isp_febe_cfg_user_wmif_buff(raw->isp, &wmif);
	}
}

static void c4_isp_raw_wmif_enable(struct c4_isp_capture *raw, bool enable)
{
	enum c4_isp_image_mode img_mode = raw->isp->core.cfg_info.img_mode;
	struct c4_isp_pyr_wmif_params wmif;

	wmif.id = C4_ISP_USER0_WMIF;
	wmif.chnl = C4_ISP_PYR_WMIF_CHNL_0;
	wmif.enable = enable ? IDWMIF_CFG_0_EN : IDWMIF_CFG_0_DIS;
	c4_isp_febe_user_wmif_enable(raw->isp, &wmif);

	if (img_mode == C4_ISP_IMAGE_HDR) {
		wmif.id = C4_ISP_USER1_WMIF;
		wmif.chnl = C4_ISP_PYR_WMIF_CHNL_1;
		wmif.enable = enable ? IDWMIF_CFG_0_EN : IDWMIF_CFG_0_DIS;;
		c4_isp_febe_user_wmif_enable(raw->isp, &wmif);
	}
}

static void c4_isp_raw_cfg_buff(struct c4_isp_capture *raw)
{
	raw->buff = list_first_entry_or_null(&raw->pending,
					     struct c4_isp_cap_buffer, list);

	c4_isp_raw_cfg_wmif_buff(raw);

	if (raw->buff)
		list_del(&raw->buff->list);
}

static void c4_isp_raw_start(struct c4_isp_capture *raw)
{
	enum c4_isp_image_mode img_mode = raw->isp->core.cfg_info.img_mode;

	guard(spinlock_irqsave)(&raw->buff_lock);

	c4_isp_intf_cfg_inmux_force(raw->isp, 0, true);

	if (img_mode == C4_ISP_IMAGE_HDR)
		c4_isp_intf_cfg_inmux_force(raw->isp, 1, true);

	c4_isp_raw_cfg_wmif_fmt(raw);
	c4_isp_raw_cfg_buff(raw);
	c4_isp_raw_wmif_enable(raw, true);
}

static void c4_isp_raw_stop(struct c4_isp_capture *raw)
{
	enum c4_isp_image_mode img_mode = raw->isp->core.cfg_info.img_mode;

	c4_isp_intf_cfg_inmux_force(raw->isp, 0, false);

	if (img_mode == C4_ISP_IMAGE_HDR)
		c4_isp_intf_cfg_inmux_force(raw->isp, 1, false);

	c4_isp_raw_wmif_enable(raw, false);
}

/* V4L2 video operations */

static const struct c4_isp_cap_format_info *c4_raw_find_fmt(u32 fourcc)
{
	for (unsigned int i = 0; i < ARRAY_SIZE(raw_formats); i++) {
		if (raw_formats[i].fourcc == fourcc)
			return &raw_formats[i];
	}

	return NULL;
}

static void c4_raw_try_fmt(struct v4l2_pix_format_mplane *pix_mp)
{
	const struct c4_isp_cap_format_info *fmt;
	struct v4l2_plane_pix_format *plane;

	fmt = c4_raw_find_fmt(pix_mp->pixelformat);
	if (!fmt)
		fmt = &raw_formats[0];

	pix_mp->width = clamp(pix_mp->width, C4_ISP_MIN_WIDTH,
			      C4_ISP_MAX_WIDTH);
	pix_mp->height = clamp(pix_mp->height, C4_ISP_MIN_HEIGHT,
			       C4_ISP_MAX_HEIGHT);
	pix_mp->pixelformat = fmt->fourcc;
	pix_mp->field = V4L2_FIELD_NONE;
	pix_mp->colorspace = V4L2_COLORSPACE_RAW;
	pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
	pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;

	pix_mp->num_planes = fmt->num_planes;
	memset(pix_mp->plane_fmt, 0, sizeof(pix_mp->plane_fmt));

	for (unsigned int i = 0; i < fmt->num_planes; i++) {
		unsigned int hdiv = (i == 0) ? 1 : fmt->hdiv;
		unsigned int vdiv = (i == 0) ? 1 : fmt->vdiv;

		plane = &pix_mp->plane_fmt[i];

		plane->bytesperline = DIV_ROUND_UP(pix_mp->width, hdiv) *
				      fmt->bpp[i] / BITS_PER_BYTE;
		plane->bytesperline = ALIGN(plane->bytesperline,
					    C4_ISP_WMIF_STRIDE_ALIGN_BYTES);
		plane->sizeimage = plane->bytesperline *
				   DIV_ROUND_UP(pix_mp->height, vdiv);
	}
}

static void c4_isp_raw_return_buffers(struct c4_isp_capture *raw,
				      enum vb2_buffer_state state)
{
	struct c4_isp_cap_buffer *buff;

	guard(spinlock_irqsave)(&raw->buff_lock);

	if (raw->buff) {
		vb2_buffer_done(&raw->buff->vb.vb2_buf, state);
		raw->buff = NULL;
	}

	while (!list_empty(&raw->pending)) {
		buff = list_first_entry(&raw->pending,
					struct c4_isp_cap_buffer, list);
		list_del(&buff->list);
		vb2_buffer_done(&buff->vb.vb2_buf, state);
	}
}

static int c4_isp_raw_querycap(struct file *file, void *fh,
			       struct v4l2_capability *raw)
{
	strscpy(raw->driver, C4_ISP_DRIVER_NAME, sizeof(raw->driver));
	strscpy(raw->card, "AML C4 ISP5", sizeof(raw->card));

	return 0;
}

static int c4_isp_raw_enum_fmt(struct file *file, void *fh,
			       struct v4l2_fmtdesc *f)
{
	const struct c4_isp_cap_format_info *fmt;
	unsigned int index = 0;
	unsigned int i;

	if (!f->mbus_code) {
		if (f->index >= ARRAY_SIZE(raw_formats))
			return -EINVAL;

		fmt = &raw_formats[f->index];
		f->pixelformat = fmt->fourcc;
		f->mbus_code = fmt->code;
		return 0;
	}

	for (i = 0; i < ARRAY_SIZE(raw_formats); i++) {
		fmt = &raw_formats[i];
		if (f->mbus_code != fmt->code)
			continue;

		if (index++ == f->index) {
			f->pixelformat = raw_formats[i].fourcc;
			return 0;
		}
	}

	return -EINVAL;
}

static int c4_isp_raw_g_fmt_mplane(struct file *file, void *fh,
				   struct v4l2_format *f)
{
	struct c4_isp_capture *raw = video_drvdata(file);

	f->fmt.pix_mp = raw->format.pix_mp;

	return 0;
}

static int c4_isp_raw_s_fmt_mplane(struct file *file, void *fh,
				   struct v4l2_format *f)
{
	struct c4_isp_capture *raw = video_drvdata(file);

	c4_raw_try_fmt(&f->fmt.pix_mp);

	raw->format.pix_mp = f->fmt.pix_mp;
	raw->format.info = c4_raw_find_fmt(f->fmt.pix_mp.pixelformat);

	return 0;
}

static int c4_isp_raw_try_fmt_mplane(struct file *file, void *fh,
				     struct v4l2_format *f)
{
	c4_raw_try_fmt(&f->fmt.pix_mp);

	return 0;
}

static int c4_isp_raw_enum_frmsize(struct file *file, void *fh,
				   struct v4l2_frmsizeenum *fsize)
{
	const struct c4_isp_cap_format_info *fmt;

	if (fsize->index)
		return -EINVAL;

	fmt = c4_raw_find_fmt(fsize->pixel_format);
	if (!fmt)
		return -EINVAL;

	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
	fsize->stepwise.min_width = C4_ISP_MIN_WIDTH;
	fsize->stepwise.min_height = C4_ISP_MIN_HEIGHT;
	fsize->stepwise.max_width = C4_ISP_MAX_WIDTH;
	fsize->stepwise.max_height = C4_ISP_MAX_HEIGHT;
	fsize->stepwise.step_width = 2;
	fsize->stepwise.step_height = 2;

	return 0;
}

static const struct v4l2_ioctl_ops isp_raw_v4l2_ioctl_ops = {
	.vidioc_querycap		= c4_isp_raw_querycap,
	.vidioc_enum_fmt_vid_cap	= c4_isp_raw_enum_fmt,
	.vidioc_g_fmt_vid_cap_mplane	= c4_isp_raw_g_fmt_mplane,
	.vidioc_s_fmt_vid_cap_mplane	= c4_isp_raw_s_fmt_mplane,
	.vidioc_try_fmt_vid_cap_mplane	= c4_isp_raw_try_fmt_mplane,
	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
	.vidioc_querybuf		= vb2_ioctl_querybuf,
	.vidioc_qbuf			= vb2_ioctl_qbuf,
	.vidioc_expbuf			= vb2_ioctl_expbuf,
	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
	.vidioc_streamon		= vb2_ioctl_streamon,
	.vidioc_streamoff		= vb2_ioctl_streamoff,
	.vidioc_enum_framesizes         = c4_isp_raw_enum_frmsize,
	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
};

static const struct v4l2_file_operations isp_raw_v4l2_fops = {
	.open = v4l2_fh_open,
	.release = vb2_fop_release,
	.poll = vb2_fop_poll,
	.unlocked_ioctl = video_ioctl2,
	.mmap = vb2_fop_mmap,
};

static int c4_isp_raw_link_validate(struct media_link *link)
{
	struct video_device *vdev =
		media_entity_to_video_device(link->sink->entity);
	struct v4l2_subdev *sd =
		media_entity_to_v4l2_subdev(link->source->entity);
	struct c4_isp_capture *raw = video_get_drvdata(vdev);
	struct v4l2_subdev_format src_fmt = {
		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
		.pad = link->source->index,
	};
	int ret;

	ret = v4l2_subdev_call_state_active(sd, pad, get_fmt, &src_fmt);
	if (ret)
		return ret;

	if (src_fmt.format.width != raw->format.pix_mp.width ||
	    src_fmt.format.height != raw->format.pix_mp.height ||
	    src_fmt.format.code != raw->format.info->code) {
		dev_err(raw->isp->dev,
			"link %s: %u -> %s: %u not valid: 0x%04x/%ux%u not match 0x%04x/%ux%u\n",
			link->source->entity->name, link->source->index,
			link->sink->entity->name, link->sink->index,
			src_fmt.format.code, src_fmt.format.width,
			src_fmt.format.height, raw->format.info->code,
			raw->format.pix_mp.width, raw->format.pix_mp.height);

		return -EPIPE;
	}

	return 0;
}

static const struct media_entity_operations isp_raw_entity_ops = {
	.link_validate = c4_isp_raw_link_validate,
};

static int c4_isp_raw_vb2_queue_setup(struct vb2_queue *q,
				      unsigned int *num_buffers,
				      unsigned int *num_planes,
				      unsigned int sizes[],
				      struct device *alloc_devs[])
{
	struct c4_isp_capture *raw = vb2_get_drv_priv(q);
	const struct v4l2_pix_format_mplane *pix_mp = &raw->format.pix_mp;
	unsigned int i;

	if (*num_planes) {
		if (*num_planes != pix_mp->num_planes)
			return -EINVAL;

		for (i = 0; i < pix_mp->num_planes; i++)
			if (sizes[i] < pix_mp->plane_fmt[i].sizeimage)
				return -EINVAL;

		return 0;
	}

	*num_planes = pix_mp->num_planes;
	for (i = 0; i < pix_mp->num_planes; i++)
		sizes[i] = pix_mp->plane_fmt[i].sizeimage;

	return 0;
}

static void c4_isp_raw_vb2_buf_queue(struct vb2_buffer *vb)
{
	struct vb2_v4l2_buffer *v4l2_buf = to_vb2_v4l2_buffer(vb);
	struct c4_isp_cap_buffer *buf =
			container_of(v4l2_buf, struct c4_isp_cap_buffer, vb);
	struct c4_isp_capture *raw = vb2_get_drv_priv(vb->vb2_queue);

	guard(spinlock_irqsave)(&raw->buff_lock);

	list_add_tail(&buf->list, &raw->pending);
}

static int c4_isp_raw_vb2_buf_prepare(struct vb2_buffer *vb)
{
	struct c4_isp_capture *raw = vb2_get_drv_priv(vb->vb2_queue);
	unsigned long size;

	for (unsigned int i = 0; i < raw->format.pix_mp.num_planes; i++) {
		size = raw->format.pix_mp.plane_fmt[i].sizeimage;
		if (vb2_plane_size(vb, i) < size) {
			dev_err(raw->isp->dev,
				"User buffer too small (%ld < %lu)\n",
				vb2_plane_size(vb, i), size);
			return -EINVAL;
		}

		vb2_set_plane_payload(vb, i, size);
	}

	return 0;
}

static int c4_isp_raw_vb2_buf_init(struct vb2_buffer *vb)
{
	struct c4_isp_capture *raw = vb2_get_drv_priv(vb->vb2_queue);
	struct vb2_v4l2_buffer *v4l2_buf = to_vb2_v4l2_buffer(vb);
	struct c4_isp_cap_buffer *buf =
		container_of(v4l2_buf, struct c4_isp_cap_buffer, vb);

	for (unsigned int i = 0; i < raw->format.pix_mp.num_planes; i++)
		buf->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);

	return 0;
}

static int c4_isp_raw_vb2_start_streaming(struct vb2_queue *q,
					  unsigned int count)
{
	struct c4_isp_capture *raw = vb2_get_drv_priv(q);
	int ret;

	ret = video_device_pipeline_start(&raw->vdev, &raw->isp->sc_pipe);
	if (ret) {
		dev_err(raw->isp->dev,
			"Failed to start raw pipeline: %d\n", ret);
		goto err_return_buffers;
	}

	ret = c4_isp_raw_dummy_buff_create(raw);
	if (ret)
		goto err_pipeline_stop;

	ret = pm_runtime_resume_and_get(raw->isp->dev);
	if (ret)
		goto err_dummy_destroy;

	c4_isp_raw_start(raw);

	ret = v4l2_subdev_enable_streams(&raw->isp->core.sd,
					 C4_ISP_CORE_PAD_SOURCE_RAW, BIT(0));
	if (ret)
		goto err_pm_put;

	return 0;

err_pm_put:
	pm_runtime_put(raw->isp->dev);
err_dummy_destroy:
	c4_isp_raw_dummy_buff_destroy(raw);
err_pipeline_stop:
	video_device_pipeline_stop(&raw->vdev);
err_return_buffers:
	c4_isp_raw_return_buffers(raw, VB2_BUF_STATE_QUEUED);
	return ret;
}

static void c4_isp_raw_vb2_stop_streaming(struct vb2_queue *q)
{
	struct c4_isp_capture *raw = vb2_get_drv_priv(q);

	c4_isp_raw_stop(raw);

	c4_isp_raw_return_buffers(raw, VB2_BUF_STATE_ERROR);

	v4l2_subdev_disable_streams(&raw->isp->core.sd,
				    C4_ISP_CORE_PAD_SOURCE_RAW, BIT(0));

	pm_runtime_put(raw->isp->dev);

	c4_isp_raw_dummy_buff_destroy(raw);

	video_device_pipeline_stop(&raw->vdev);
}

static const struct vb2_ops isp_raw_vb2_ops = {
	.queue_setup = c4_isp_raw_vb2_queue_setup,
	.buf_queue = c4_isp_raw_vb2_buf_queue,
	.buf_prepare = c4_isp_raw_vb2_buf_prepare,
	.buf_init = c4_isp_raw_vb2_buf_init,
	.wait_prepare = vb2_ops_wait_prepare,
	.wait_finish = vb2_ops_wait_finish,
	.start_streaming = c4_isp_raw_vb2_start_streaming,
	.stop_streaming = c4_isp_raw_vb2_stop_streaming,
};

int c4_isp_raw_register(struct c4_isp_device *isp)
{
	struct c4_isp_capture *raw = &isp->raw;
	struct video_device *vdev = &raw->vdev;
	struct vb2_queue *vb2_q = &raw->vb2_q;
	int ret;

	raw->id = 0;
	raw->rsz = NULL;
	raw->isp = isp;
	raw->format.pix_mp.width = C4_ISP_DEFAULT_WIDTH;
	raw->format.pix_mp.height = C4_ISP_DEFAULT_HEIGHT;
	raw->format.pix_mp.field = V4L2_FIELD_NONE;
	raw->format.pix_mp.pixelformat = V4L2_PIX_FMT_SRGGB12;
	raw->format.pix_mp.colorspace = V4L2_COLORSPACE_RAW;
	raw->format.pix_mp.quantization =V4L2_QUANTIZATION_FULL_RANGE;
	raw->format.info = c4_raw_find_fmt(raw->format.pix_mp.pixelformat);
	c4_raw_try_fmt(&raw->format.pix_mp);
	INIT_LIST_HEAD(&raw->pending);
	spin_lock_init(&raw->buff_lock);
	mutex_init(&raw->lock);

	snprintf(vdev->name, sizeof(vdev->name), "c4-isp-raw");
	vdev->fops = &isp_raw_v4l2_fops;
	vdev->ioctl_ops = &isp_raw_v4l2_ioctl_ops;
	vdev->v4l2_dev = &raw->isp->v4l2_dev;
	vdev->entity.ops = &isp_raw_entity_ops;
	vdev->lock = &raw->lock;
	vdev->minor = -1;
	vdev->queue = vb2_q;
	vdev->release = video_device_release_empty;
	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
			    V4L2_CAP_STREAMING | V4L2_CAP_IO_MC;
	vdev->vfl_dir = VFL_DIR_RX;
	video_set_drvdata(vdev, raw);

	vb2_q->drv_priv = raw;
	vb2_q->mem_ops = &vb2_dma_contig_memops;
	vb2_q->ops = &isp_raw_vb2_ops;
	vb2_q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
	vb2_q->io_modes = VB2_DMABUF | VB2_MMAP;
	vb2_q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
	vb2_q->buf_struct_size = sizeof(struct c4_isp_cap_buffer);
	vb2_q->dev = raw->isp->dev;
	vb2_q->lock = &raw->lock;

	ret = vb2_queue_init(vb2_q);
	if (ret)
		goto err_destroy;

	raw->pad.flags = MEDIA_PAD_FL_SINK;
	ret = media_entity_pads_init(&vdev->entity, 1, &raw->pad);
	if (ret)
		goto err_queue_release;

	ret = video_register_device(vdev, VFL_TYPE_VIDEO, C4_V4L2_VIDEO_BEGIN_NUM);
	if (ret) {
		dev_err(raw->isp->dev,
			"Failed to register %s: %d\n", vdev->name, ret);
		goto err_entity_cleanup;
	}

	return 0;

err_entity_cleanup:
	media_entity_cleanup(&vdev->entity);
err_queue_release:
	vb2_queue_release(vb2_q);
err_destroy:
	mutex_destroy(&raw->lock);
	return ret;
}

void c4_isp_raw_unregister(struct c4_isp_device *isp)
{
	struct c4_isp_capture *raw = &isp->raw;

	vb2_queue_release(&raw->vb2_q);
	media_entity_cleanup(&raw->vdev.entity);
	video_unregister_device(&raw->vdev);
	mutex_destroy(&raw->lock);
}

void c4_isp_raw_isr(struct c4_isp_device *isp)
{
	struct c4_isp_capture *raw = &isp->raw;
	struct c4_isp_cap_buffer *buff = raw->buff;

	if (!raw->vb2_q.streaming)
		return;

	guard(spinlock_irqsave)(&raw->buff_lock);

	if (buff) {
		buff->vb.sequence = raw->isp->be_frm_seq;
		buff->vb.vb2_buf.timestamp = ktime_get();
		buff->vb.field = V4L2_FIELD_NONE;
		vb2_buffer_done(&buff->vb.vb2_buf, VB2_BUF_STATE_DONE);
	}

	c4_isp_raw_cfg_buff(raw);
}