// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright 2020-2021 NXP
 */

#include <linux/init.h>
#include <linux/interconnect.h>
#include <linux/ioctl.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include <linux/ktime.h>
#include <linux/rational.h>
#include <linux/vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-contig.h>
#include <media/videobuf2-vmalloc.h>
#include "vpu.h"
#include "vpu_defs.h"
#include "vpu_core.h"
#include "vpu_helpers.h"
#include "vpu_v4l2.h"
#include "vpu_cmds.h"
#include "vpu_rpc.h"

#define VENC_OUTPUT_ENABLE	BIT(0)
#define VENC_CAPTURE_ENABLE	BIT(1)
#define VENC_ENABLE_MASK	(VENC_OUTPUT_ENABLE | VENC_CAPTURE_ENABLE)
#define VENC_MAX_BUF_CNT	8
#define VENC_MIN_BUFFER_OUT	6
#define VENC_MIN_BUFFER_CAP	6

struct venc_t {
	struct vpu_encode_params params;
	u32 request_key_frame;
	u32 input_ready;
	u32 cpb_size;
	bool bitrate_change;

	struct vpu_buffer enc[VENC_MAX_BUF_CNT];
	struct vpu_buffer ref[VENC_MAX_BUF_CNT];
	struct vpu_buffer act[VENC_MAX_BUF_CNT];
	struct list_head frames;
	u32 frame_count;
	u32 encode_count;
	u32 ready_count;
	u32 enable;
	u32 stopped;

	u32 skipped_count;
	u32 skipped_bytes;

	wait_queue_head_t wq;
};

struct venc_frame_t {
	struct list_head list;
	struct vpu_enc_pic_info info;
	u32 bytesused;
	s64 timestamp;
};

static const struct vpu_format venc_formats[] = {
	{
		.pixfmt = V4L2_PIX_FMT_NV12M,
		.mem_planes = 2,
		.comp_planes = 2,
		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
		.sibling = V4L2_PIX_FMT_NV12,
	},
	{
		.pixfmt = V4L2_PIX_FMT_NV12,
		.mem_planes = 1,
		.comp_planes = 2,
		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
		.sibling = V4L2_PIX_FMT_NV12M,
	},
	{
		.pixfmt = V4L2_PIX_FMT_H264,
		.mem_planes = 1,
		.comp_planes = 1,
		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
		.flags = V4L2_FMT_FLAG_COMPRESSED
	},
	{0, 0, 0, 0},
};

static int venc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
{
	strscpy(cap->driver, "amphion-vpu", sizeof(cap->driver));
	strscpy(cap->card, "amphion vpu encoder", sizeof(cap->card));
	strscpy(cap->bus_info, "platform: amphion-vpu", sizeof(cap->bus_info));

	return 0;
}

static int venc_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
{
	struct vpu_inst *inst = to_inst(file);
	const struct vpu_format *fmt;

	memset(f->reserved, 0, sizeof(f->reserved));
	fmt = vpu_helper_enum_format(inst, f->type, f->index);
	if (!fmt)
		return -EINVAL;

	f->pixelformat = fmt->pixfmt;
	f->flags = fmt->flags;

	return 0;
}

static int venc_enum_framesizes(struct file *file, void *fh, struct v4l2_frmsizeenum *fsize)
{
	struct vpu_inst *inst = to_inst(file);
	const struct vpu_core_resources *res;

	if (!fsize || fsize->index)
		return -EINVAL;

	if (!vpu_helper_find_format(inst, 0, fsize->pixel_format))
		return -EINVAL;

	res = vpu_get_resource(inst);
	if (!res)
		return -EINVAL;
	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
	fsize->stepwise.max_width = res->max_width;
	fsize->stepwise.max_height = res->max_height;
	fsize->stepwise.min_width = res->min_width;
	fsize->stepwise.min_height = res->min_height;
	fsize->stepwise.step_width = res->step_width;
	fsize->stepwise.step_height = res->step_height;

	return 0;
}

static int venc_enum_frameintervals(struct file *file, void *fh, struct v4l2_frmivalenum *fival)
{
	struct vpu_inst *inst = to_inst(file);
	const struct vpu_core_resources *res;

	if (!fival || fival->index)
		return -EINVAL;

	if (!vpu_helper_find_format(inst, 0, fival->pixel_format))
		return -EINVAL;

	if (!fival->width || !fival->height)
		return -EINVAL;

	res = vpu_get_resource(inst);
	if (!res)
		return -EINVAL;
	if (fival->width < res->min_width || fival->width > res->max_width ||
	    fival->height < res->min_height || fival->height > res->max_height)
		return -EINVAL;

	fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
	fival->stepwise.min.numerator = 1;
	fival->stepwise.min.denominator = USHRT_MAX;
	fival->stepwise.max.numerator = USHRT_MAX;
	fival->stepwise.max.denominator = 1;
	fival->stepwise.step.numerator = 1;
	fival->stepwise.step.denominator = 1;

	return 0;
}

static int venc_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
	struct vpu_inst *inst = to_inst(file);
	struct venc_t *venc = inst->priv;
	struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
	struct vpu_format *cur_fmt;
	int i;

	cur_fmt = vpu_get_format(inst, f->type);

	pixmp->pixelformat = cur_fmt->pixfmt;
	pixmp->num_planes = cur_fmt->mem_planes;
	pixmp->width = cur_fmt->width;
	pixmp->height = cur_fmt->height;
	pixmp->field = cur_fmt->field;
	pixmp->flags = cur_fmt->flags;
	for (i = 0; i < pixmp->num_planes; i++) {
		pixmp->plane_fmt[i].bytesperline = cur_fmt->bytesperline[i];
		pixmp->plane_fmt[i].sizeimage = vpu_get_fmt_plane_size(cur_fmt, i);
	}

	f->fmt.pix_mp.colorspace = venc->params.color.primaries;
	f->fmt.pix_mp.xfer_func = venc->params.color.transfer;
	f->fmt.pix_mp.ycbcr_enc = venc->params.color.matrix;
	f->fmt.pix_mp.quantization = venc->params.color.full_range;

	return 0;
}

static int venc_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
	struct vpu_inst *inst = to_inst(file);
	struct vpu_format fmt;

	vpu_try_fmt_common(inst, f, &fmt);

	return 0;
}

static int venc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
	struct vpu_inst *inst = to_inst(file);
	struct vpu_format fmt;
	struct vpu_format *cur_fmt;
	struct vb2_queue *q;
	struct venc_t *venc = inst->priv;
	struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;

	q = v4l2_m2m_get_vq(inst->fh.m2m_ctx, f->type);
	if (!q)
		return -EINVAL;
	if (vb2_is_busy(q))
		return -EBUSY;

	if (vpu_try_fmt_common(inst, f, &fmt))
		return -EINVAL;

	cur_fmt = vpu_get_format(inst, f->type);

	memcpy(cur_fmt, &fmt, sizeof(*cur_fmt));

	if (V4L2_TYPE_IS_OUTPUT(f->type)) {
		venc->params.input_format = cur_fmt->pixfmt;
		venc->params.src_stride = cur_fmt->bytesperline[0];
		venc->params.src_width = cur_fmt->width;
		venc->params.src_height = cur_fmt->height;
		venc->params.crop.left = 0;
		venc->params.crop.top = 0;
		venc->params.crop.width = cur_fmt->width;
		venc->params.crop.height = cur_fmt->height;
	} else {
		venc->params.codec_format = cur_fmt->pixfmt;
		venc->params.out_width = cur_fmt->width;
		venc->params.out_height = cur_fmt->height;
	}

	if (V4L2_TYPE_IS_OUTPUT(f->type)) {
		venc->params.color.primaries = pix_mp->colorspace;
		venc->params.color.transfer = pix_mp->xfer_func;
		venc->params.color.matrix = pix_mp->ycbcr_enc;
		venc->params.color.full_range = pix_mp->quantization;
	}

	pix_mp->colorspace = venc->params.color.primaries;
	pix_mp->xfer_func = venc->params.color.transfer;
	pix_mp->ycbcr_enc = venc->params.color.matrix;
	pix_mp->quantization = venc->params.color.full_range;

	return 0;
}

static int venc_g_parm(struct file *file, void *fh, struct v4l2_streamparm *parm)
{
	struct vpu_inst *inst = to_inst(file);
	struct venc_t *venc = inst->priv;
	struct v4l2_fract *timeperframe;

	if (!parm)
		return -EINVAL;

	if (!V4L2_TYPE_IS_OUTPUT(parm->type))
		return -EINVAL;

	if (!vpu_helper_check_type(inst, parm->type))
		return -EINVAL;

	timeperframe = &parm->parm.capture.timeperframe;
	parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
	parm->parm.capture.readbuffers = 0;
	timeperframe->numerator = venc->params.frame_rate.numerator;
	timeperframe->denominator = venc->params.frame_rate.denominator;

	return 0;
}

static int venc_s_parm(struct file *file, void *fh, struct v4l2_streamparm *parm)
{
	struct vpu_inst *inst = to_inst(file);
	struct venc_t *venc = inst->priv;
	struct v4l2_fract *timeperframe;
	unsigned long n, d;

	if (!parm)
		return -EINVAL;

	if (!V4L2_TYPE_IS_OUTPUT(parm->type))
		return -EINVAL;

	if (!vpu_helper_check_type(inst, parm->type))
		return -EINVAL;

	timeperframe = &parm->parm.capture.timeperframe;
	if (!timeperframe->numerator)
		timeperframe->numerator = venc->params.frame_rate.numerator;
	if (!timeperframe->denominator)
		timeperframe->denominator = venc->params.frame_rate.denominator;

	venc->params.frame_rate.numerator = timeperframe->numerator;
	venc->params.frame_rate.denominator = timeperframe->denominator;

	rational_best_approximation(venc->params.frame_rate.numerator,
				    venc->params.frame_rate.denominator,
				    venc->params.frame_rate.numerator,
				    venc->params.frame_rate.denominator,
				    &n, &d);
	venc->params.frame_rate.numerator = n;
	venc->params.frame_rate.denominator = d;

	parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
	memset(parm->parm.capture.reserved, 0, sizeof(parm->parm.capture.reserved));

	return 0;
}

static int venc_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
	struct vpu_inst *inst = to_inst(file);
	struct venc_t *venc = inst->priv;

	if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
		return -EINVAL;

	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->out_format.width;
		s->r.height = inst->out_format.height;
		break;
	case V4L2_SEL_TGT_CROP:
		s->r = venc->params.crop;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int venc_valid_crop(struct venc_t *venc, const struct vpu_core_resources *res)
{
	struct v4l2_rect *rect = NULL;
	u32 min_width;
	u32 min_height;
	u32 src_width;
	u32 src_height;

	rect = &venc->params.crop;
	min_width = res->min_width;
	min_height = res->min_height;
	src_width = venc->params.src_width;
	src_height = venc->params.src_height;

	if (rect->width == 0 || rect->height == 0)
		return -EINVAL;
	if (rect->left > src_width - min_width || rect->top > src_height - min_height)
		return -EINVAL;

	rect->width = min(rect->width, src_width - rect->left);
	rect->width = max_t(u32, rect->width, min_width);

	rect->height = min(rect->height, src_height - rect->top);
	rect->height = max_t(u32, rect->height, min_height);

	return 0;
}

static int venc_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
	struct vpu_inst *inst = to_inst(file);
	const struct vpu_core_resources *res;
	struct venc_t *venc = inst->priv;

	res = vpu_get_resource(inst);
	if (!res)
		return -EINVAL;

	if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
		return -EINVAL;
	if (s->target != V4L2_SEL_TGT_CROP)
		return -EINVAL;

	venc->params.crop.left = ALIGN(s->r.left, res->step_width);
	venc->params.crop.top = ALIGN(s->r.top, res->step_height);
	venc->params.crop.width = ALIGN(s->r.width, res->step_width);
	venc->params.crop.height = ALIGN(s->r.height, res->step_height);
	if (venc_valid_crop(venc, res)) {
		venc->params.crop.left = 0;
		venc->params.crop.top = 0;
		venc->params.crop.width = venc->params.src_width;
		venc->params.crop.height = venc->params.src_height;
	}

	inst->crop = venc->params.crop;

	return 0;
}

static int venc_drain(struct vpu_inst *inst)
{
	struct venc_t *venc = inst->priv;
	int ret;

	if (!inst->fh.m2m_ctx)
		return 0;

	if (inst->state != VPU_CODEC_STATE_DRAIN)
		return 0;

	if (!vpu_is_source_empty(inst))
		return 0;

	if (!venc->input_ready)
		return 0;

	venc->input_ready = false;
	vpu_trace(inst->dev, "[%d]\n", inst->id);
	ret = vpu_session_stop(inst);
	if (ret)
		return ret;
	inst->state = VPU_CODEC_STATE_STOP;
	wake_up_all(&venc->wq);

	return 0;
}

static int venc_request_eos(struct vpu_inst *inst)
{
	inst->state = VPU_CODEC_STATE_DRAIN;
	venc_drain(inst);

	return 0;
}

static int venc_encoder_cmd(struct file *file, void *fh, struct v4l2_encoder_cmd *cmd)
{
	struct vpu_inst *inst = to_inst(file);
	int ret;

	ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd);
	if (ret)
		return ret;

	vpu_inst_lock(inst);
	if (cmd->cmd == V4L2_ENC_CMD_STOP) {
		if (inst->state == VPU_CODEC_STATE_DEINIT)
			vpu_set_last_buffer_dequeued(inst, true);
		else
			venc_request_eos(inst);
	}
	vpu_inst_unlock(inst);

	return 0;
}

static int venc_subscribe_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub)
{
	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 const struct v4l2_ioctl_ops venc_ioctl_ops = {
	.vidioc_querycap               = venc_querycap,
	.vidioc_enum_fmt_vid_cap       = venc_enum_fmt,
	.vidioc_enum_fmt_vid_out       = venc_enum_fmt,
	.vidioc_enum_framesizes        = venc_enum_framesizes,
	.vidioc_enum_frameintervals    = venc_enum_frameintervals,
	.vidioc_g_fmt_vid_cap_mplane   = venc_g_fmt,
	.vidioc_g_fmt_vid_out_mplane   = venc_g_fmt,
	.vidioc_try_fmt_vid_cap_mplane = venc_try_fmt,
	.vidioc_try_fmt_vid_out_mplane = venc_try_fmt,
	.vidioc_s_fmt_vid_cap_mplane   = venc_s_fmt,
	.vidioc_s_fmt_vid_out_mplane   = venc_s_fmt,
	.vidioc_g_parm                 = venc_g_parm,
	.vidioc_s_parm                 = venc_s_parm,
	.vidioc_g_selection            = venc_g_selection,
	.vidioc_s_selection            = venc_s_selection,
	.vidioc_try_encoder_cmd        = v4l2_m2m_ioctl_try_encoder_cmd,
	.vidioc_encoder_cmd            = venc_encoder_cmd,
	.vidioc_subscribe_event        = venc_subscribe_event,
	.vidioc_unsubscribe_event      = v4l2_event_unsubscribe,
	.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,
};

static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct vpu_inst *inst = ctrl_to_inst(ctrl);
	struct venc_t *venc = inst->priv;
	int ret = 0;

	vpu_inst_lock(inst);
	switch (ctrl->id) {
	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
		venc->params.profile = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
		venc->params.level = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
		venc->params.rc_enable = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
		venc->params.rc_mode = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE:
		if (ctrl->val != venc->params.bitrate)
			venc->bitrate_change = true;
		venc->params.bitrate = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
		venc->params.bitrate_max = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
		venc->params.gop_length = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
		venc->params.bframes = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
		venc->params.i_frame_qp = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
		venc->params.p_frame_qp = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:
		venc->params.b_frame_qp = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
		venc->request_key_frame = 1;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:
		venc->cpb_size = ctrl->val * 1024;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
		venc->params.sar.enable = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
		venc->params.sar.idc = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH:
		venc->params.sar.width = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT:
		venc->params.sar.height = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
		break;
	default:
		ret = -EINVAL;
		break;
	}
	vpu_inst_unlock(inst);

	return ret;
}

static const struct v4l2_ctrl_ops venc_ctrl_ops = {
	.s_ctrl = venc_op_s_ctrl,
	.g_volatile_ctrl = vpu_helper_g_volatile_ctrl,
};

static int venc_ctrl_init(struct vpu_inst *inst)
{
	struct v4l2_ctrl *ctrl;
	int ret;

	ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 20);
	if (ret)
		return ret;

	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
			       V4L2_CID_MPEG_VIDEO_H264_PROFILE,
			       V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
			       ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
				 (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
				 (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
			       V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);

	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
			       V4L2_CID_MPEG_VIDEO_H264_LEVEL,
			       V4L2_MPEG_VIDEO_H264_LEVEL_5_1,
			       0x0,
			       V4L2_MPEG_VIDEO_H264_LEVEL_4_0);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, 0, 1, 1, 1);

	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
			       V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
			       V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
			       ~((1 << V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) |
				 (1 << V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)),
			       V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_BITRATE,
			  BITRATE_MIN,
			  BITRATE_MAX,
			  BITRATE_STEP,
			  BITRATE_DEFAULT);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
			  BITRATE_MIN, BITRATE_MAX,
			  BITRATE_STEP,
			  BITRATE_DEFAULT_PEAK);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 8000, 1, 30);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_B_FRAMES, 0, 4, 1, 0);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 1, 51, 1, 26);
	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 1, 51, 1, 28);
	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP, 1, 51, 1, 30);
	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME, 0, 0, 0, 0);
	ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
				 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1, 2);
	if (ctrl)
		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
	ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
				 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 32, 1, 2);
	if (ctrl)
		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE, 64, 10240, 1, 1024);

	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE, 0, 1, 1, 1);
	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
			       V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC,
			       V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_EXTENDED,
			       0x0,
			       V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1);
	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH,
			  0, USHRT_MAX, 1, 1);
	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
			  V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT,
			  0, USHRT_MAX, 1, 1);
	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
			       V4L2_CID_MPEG_VIDEO_HEADER_MODE,
			       V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
			       ~(1 << V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME),
			       V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);

	if (inst->ctrl_handler.error) {
		ret = inst->ctrl_handler.error;
		v4l2_ctrl_handler_free(&inst->ctrl_handler);
		return ret;
	}

	ret = v4l2_ctrl_handler_setup(&inst->ctrl_handler);
	if (ret) {
		dev_err(inst->dev, "[%d] setup ctrls fail, ret = %d\n", inst->id, ret);
		v4l2_ctrl_handler_free(&inst->ctrl_handler);
		return ret;
	}

	return 0;
}

static bool venc_check_ready(struct vpu_inst *inst, unsigned int type)
{
	struct venc_t *venc = inst->priv;

	if (V4L2_TYPE_IS_OUTPUT(type)) {
		if (vpu_helper_get_free_space(inst) < venc->cpb_size)
			return false;
		return venc->input_ready;
	}

	if (list_empty(&venc->frames))
		return false;
	return true;
}

static u32 venc_get_enable_mask(u32 type)
{
	if (V4L2_TYPE_IS_OUTPUT(type))
		return VENC_OUTPUT_ENABLE;
	else
		return VENC_CAPTURE_ENABLE;
}

static void venc_set_enable(struct venc_t *venc, u32 type, int enable)
{
	u32 mask = venc_get_enable_mask(type);

	if (enable)
		venc->enable |= mask;
	else
		venc->enable &= ~mask;
}

static u32 venc_get_enable(struct venc_t *venc, u32 type)
{
	return venc->enable & venc_get_enable_mask(type);
}

static void venc_input_done(struct vpu_inst *inst)
{
	struct venc_t *venc = inst->priv;

	vpu_inst_lock(inst);
	venc->input_ready = true;
	vpu_process_output_buffer(inst);
	if (inst->state == VPU_CODEC_STATE_DRAIN)
		venc_drain(inst);
	vpu_inst_unlock(inst);
}

/*
 * It's hardware limitation, that there may be several bytes
 * redundant data at the beginning of frame.
 * For android platform, the redundant data may cause cts test fail
 * So driver will strip them
 */
static int venc_precheck_encoded_frame(struct vpu_inst *inst, struct venc_frame_t *frame)
{
	struct venc_t *venc;
	int skipped;

	if (!frame || !frame->bytesused)
		return -EINVAL;

	venc = inst->priv;
	skipped = vpu_helper_find_startcode(&inst->stream_buffer,
					    inst->cap_format.pixfmt,
					    frame->info.wptr - inst->stream_buffer.phys,
					    frame->bytesused);
	if (skipped > 0) {
		frame->bytesused -= skipped;
		frame->info.wptr = vpu_helper_step_walk(&inst->stream_buffer,
							frame->info.wptr, skipped);
		venc->skipped_bytes += skipped;
		venc->skipped_count++;
	}

	return 0;
}

static int venc_get_one_encoded_frame(struct vpu_inst *inst,
				      struct venc_frame_t *frame,
				      struct vb2_v4l2_buffer *vbuf)
{
	struct venc_t *venc = inst->priv;
	struct vb2_v4l2_buffer *src_buf;

	if (!vbuf)
		return -EAGAIN;

	src_buf = vpu_find_buf_by_sequence(inst, inst->out_format.type, frame->info.frame_id);
	if (src_buf) {
		v4l2_m2m_buf_copy_metadata(src_buf, vbuf, true);
		vpu_set_buffer_state(src_buf, VPU_BUF_STATE_IDLE);
		v4l2_m2m_src_buf_remove_by_buf(inst->fh.m2m_ctx, src_buf);
		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
	} else {
		vbuf->vb2_buf.timestamp = frame->info.timestamp;
	}
	if (!venc_get_enable(inst->priv, vbuf->vb2_buf.type)) {
		v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
		return 0;
	}
	if (frame->bytesused > vbuf->vb2_buf.planes[0].length) {
		v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
		return -ENOMEM;
	}

	venc_precheck_encoded_frame(inst, frame);

	if (frame->bytesused) {
		u32 rptr = frame->info.wptr;
		void *dst = vb2_plane_vaddr(&vbuf->vb2_buf, 0);

		vpu_helper_copy_from_stream_buffer(&inst->stream_buffer,
						   &rptr, frame->bytesused, dst);
		vpu_iface_update_stream_buffer(inst, rptr, 0);
	}
	vb2_set_plane_payload(&vbuf->vb2_buf, 0, frame->bytesused);
	vbuf->sequence = frame->info.frame_id;
	vbuf->field = inst->cap_format.field;
	vbuf->flags |= frame->info.pic_type;
	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_IDLE);
	dev_dbg(inst->dev, "[%d][OUTPUT TS]%32lld\n", inst->id, vbuf->vb2_buf.timestamp);
	v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
	venc->ready_count++;

	if (vbuf->flags & V4L2_BUF_FLAG_KEYFRAME)
		dev_dbg(inst->dev, "[%d][%d]key frame\n", inst->id, frame->info.frame_id);

	return 0;
}

static int venc_get_encoded_frames(struct vpu_inst *inst)
{
	struct venc_t *venc;
	struct venc_frame_t *frame;
	struct venc_frame_t *tmp;

	if (!inst->fh.m2m_ctx)
		return 0;
	venc = inst->priv;
	list_for_each_entry_safe(frame, tmp, &venc->frames, list) {
		if (venc_get_one_encoded_frame(inst, frame,
					       v4l2_m2m_dst_buf_remove(inst->fh.m2m_ctx)))
			break;
		list_del_init(&frame->list);
		vfree(frame);
	}

	return 0;
}

static int venc_frame_encoded(struct vpu_inst *inst, void *arg)
{
	struct vpu_enc_pic_info *info = arg;
	struct venc_frame_t *frame;
	struct venc_t *venc;
	int ret = 0;

	if (!info)
		return -EINVAL;
	venc = inst->priv;
	frame = vzalloc(sizeof(*frame));
	if (!frame)
		return -ENOMEM;

	memcpy(&frame->info, info, sizeof(frame->info));
	frame->bytesused = info->frame_size;

	vpu_inst_lock(inst);
	list_add_tail(&frame->list, &venc->frames);
	venc->encode_count++;
	venc_get_encoded_frames(inst);
	vpu_inst_unlock(inst);

	return ret;
}

static void venc_set_last_buffer_dequeued(struct vpu_inst *inst)
{
	struct venc_t *venc = inst->priv;

	if (venc->stopped && list_empty(&venc->frames))
		vpu_set_last_buffer_dequeued(inst, true);
}

static void venc_stop_done(struct vpu_inst *inst)
{
	struct venc_t *venc = inst->priv;

	vpu_inst_lock(inst);
	venc->stopped = true;
	venc_set_last_buffer_dequeued(inst);
	vpu_inst_unlock(inst);

	wake_up_all(&venc->wq);
}

static void venc_event_notify(struct vpu_inst *inst, u32 event, void *data)
{
}

static void venc_release(struct vpu_inst *inst)
{
}

static void venc_cleanup(struct vpu_inst *inst)
{
	struct venc_t *venc;

	if (!inst)
		return;

	venc = inst->priv;
	vfree(venc);
	inst->priv = NULL;
	vfree(inst);
}

static int venc_start_session(struct vpu_inst *inst, u32 type)
{
	struct venc_t *venc = inst->priv;
	int stream_buffer_size;
	int ret;

	venc_set_enable(venc, type, 1);
	if ((venc->enable & VENC_ENABLE_MASK) != VENC_ENABLE_MASK)
		return 0;

	vpu_iface_init_instance(inst);
	stream_buffer_size = vpu_iface_get_stream_buffer_size(inst->core);
	if (stream_buffer_size > 0) {
		inst->stream_buffer.length = max_t(u32, stream_buffer_size, venc->cpb_size * 3);
		ret = vpu_alloc_dma(inst->core, &inst->stream_buffer);
		if (ret)
			goto error;

		inst->use_stream_buffer = true;
		vpu_iface_config_stream_buffer(inst, &inst->stream_buffer);
	}

	ret = vpu_iface_set_encode_params(inst, &venc->params, 0);
	if (ret)
		goto error;
	ret = vpu_session_configure_codec(inst);
	if (ret)
		goto error;

	inst->state = VPU_CODEC_STATE_CONFIGURED;
	/*vpu_iface_config_memory_resource*/

	/*config enc expert mode parameter*/
	ret = vpu_iface_set_encode_params(inst, &venc->params, 1);
	if (ret)
		goto error;

	ret = vpu_session_start(inst);
	if (ret)
		goto error;
	inst->state = VPU_CODEC_STATE_STARTED;

	venc->bitrate_change = false;
	venc->input_ready = true;
	venc->frame_count = 0;
	venc->encode_count = 0;
	venc->ready_count = 0;
	venc->stopped = false;
	vpu_process_output_buffer(inst);
	if (venc->frame_count == 0)
		dev_err(inst->dev, "[%d] there is no input when starting\n", inst->id);

	return 0;
error:
	venc_set_enable(venc, type, 0);
	inst->state = VPU_CODEC_STATE_DEINIT;

	vpu_free_dma(&inst->stream_buffer);
	return ret;
}

static void venc_cleanup_mem_resource(struct vpu_inst *inst)
{
	struct venc_t *venc;
	u32 i;

	venc = inst->priv;

	for (i = 0; i < ARRAY_SIZE(venc->enc); i++)
		vpu_free_dma(&venc->enc[i]);
	for (i = 0; i < ARRAY_SIZE(venc->ref); i++)
		vpu_free_dma(&venc->ref[i]);
}

static void venc_request_mem_resource(struct vpu_inst *inst,
				      u32 enc_frame_size,
				      u32 enc_frame_num,
				      u32 ref_frame_size,
				      u32 ref_frame_num,
				      u32 act_frame_size,
				      u32 act_frame_num)
{
	struct venc_t *venc;
	u32 i;
	int ret;

	venc = inst->priv;
	if (enc_frame_num > ARRAY_SIZE(venc->enc)) {
		dev_err(inst->dev, "[%d] enc num(%d) is out of range\n", inst->id, enc_frame_num);
		return;
	}
	if (ref_frame_num > ARRAY_SIZE(venc->ref)) {
		dev_err(inst->dev, "[%d] ref num(%d) is out of range\n", inst->id, ref_frame_num);
		return;
	}
	if (act_frame_num > ARRAY_SIZE(venc->act)) {
		dev_err(inst->dev, "[%d] act num(%d) is out of range\n", inst->id, act_frame_num);
		return;
	}

	for (i = 0; i < enc_frame_num; i++) {
		venc->enc[i].length = enc_frame_size;
		ret = vpu_alloc_dma(inst->core, &venc->enc[i]);
		if (ret) {
			venc_cleanup_mem_resource(inst);
			return;
		}
	}
	for (i = 0; i < ref_frame_num; i++) {
		venc->ref[i].length = ref_frame_size;
		ret = vpu_alloc_dma(inst->core, &venc->ref[i]);
		if (ret) {
			venc_cleanup_mem_resource(inst);
			return;
		}
	}
	if (act_frame_num != 1 || act_frame_size > inst->act.length) {
		venc_cleanup_mem_resource(inst);
		return;
	}
	venc->act[0].length = act_frame_size;
	venc->act[0].phys = inst->act.phys;
	venc->act[0].virt = inst->act.virt;

	for (i = 0; i < enc_frame_num; i++)
		vpu_iface_config_memory_resource(inst, MEM_RES_ENC, i, &venc->enc[i]);
	for (i = 0; i < ref_frame_num; i++)
		vpu_iface_config_memory_resource(inst, MEM_RES_REF, i, &venc->ref[i]);
	for (i = 0; i < act_frame_num; i++)
		vpu_iface_config_memory_resource(inst, MEM_RES_ACT, i, &venc->act[i]);
}

static void venc_cleanup_frames(struct venc_t *venc)
{
	struct venc_frame_t *frame;
	struct venc_frame_t *tmp;

	list_for_each_entry_safe(frame, tmp, &venc->frames, list) {
		list_del_init(&frame->list);
		vfree(frame);
	}
}

static int venc_stop_session(struct vpu_inst *inst, u32 type)
{
	struct venc_t *venc = inst->priv;

	venc_set_enable(venc, type, 0);
	if (venc->enable & VENC_ENABLE_MASK)
		return 0;

	if (inst->state == VPU_CODEC_STATE_DEINIT)
		return 0;

	if (inst->state != VPU_CODEC_STATE_STOP)
		venc_request_eos(inst);

	call_void_vop(inst, wait_prepare);
	if (!wait_event_timeout(venc->wq, venc->stopped, VPU_TIMEOUT)) {
		set_bit(inst->id, &inst->core->hang_mask);
		vpu_session_debug(inst);
	}
	call_void_vop(inst, wait_finish);

	inst->state = VPU_CODEC_STATE_DEINIT;
	venc_cleanup_frames(inst->priv);
	vpu_free_dma(&inst->stream_buffer);
	venc_cleanup_mem_resource(inst);

	return 0;
}

static int venc_process_output(struct vpu_inst *inst, struct vb2_buffer *vb)
{
	struct venc_t *venc = inst->priv;
	struct vb2_v4l2_buffer *vbuf;
	u32 flags;

	if (inst->state == VPU_CODEC_STATE_DEINIT)
		return -EINVAL;

	vbuf = to_vb2_v4l2_buffer(vb);
	if (inst->state == VPU_CODEC_STATE_STARTED)
		inst->state = VPU_CODEC_STATE_ACTIVE;

	flags = vbuf->flags;
	if (venc->request_key_frame) {
		vbuf->flags |= V4L2_BUF_FLAG_KEYFRAME;
		venc->request_key_frame = 0;
	}
	if (venc->bitrate_change) {
		vpu_session_update_parameters(inst, &venc->params);
		venc->bitrate_change = false;
	}
	dev_dbg(inst->dev, "[%d][INPUT  TS]%32lld\n", inst->id, vb->timestamp);
	vpu_iface_input_frame(inst, vb);
	vbuf->flags = flags;
	venc->input_ready = false;
	venc->frame_count++;
	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_INUSE);

	return 0;
}

static int venc_process_capture(struct vpu_inst *inst, struct vb2_buffer *vb)
{
	struct venc_t *venc;
	struct venc_frame_t *frame = NULL;
	struct vb2_v4l2_buffer *vbuf;
	int ret;

	venc = inst->priv;
	if (list_empty(&venc->frames))
		return -EINVAL;

	frame = list_first_entry(&venc->frames, struct venc_frame_t, list);
	vbuf = to_vb2_v4l2_buffer(vb);
	v4l2_m2m_dst_buf_remove_by_buf(inst->fh.m2m_ctx, vbuf);
	ret = venc_get_one_encoded_frame(inst, frame, vbuf);
	if (ret)
		return ret;

	list_del_init(&frame->list);
	vfree(frame);
	return 0;
}

static void venc_on_queue_empty(struct vpu_inst *inst, u32 type)
{
	struct venc_t *venc = inst->priv;

	if (V4L2_TYPE_IS_OUTPUT(type))
		return;

	if (venc->stopped)
		venc_set_last_buffer_dequeued(inst);
}

static int venc_get_debug_info(struct vpu_inst *inst, char *str, u32 size, u32 i)
{
	struct venc_t *venc = inst->priv;
	int num = -1;

	switch (i) {
	case 0:
		num = scnprintf(str, size, "profile = %d\n", venc->params.profile);
		break;
	case 1:
		num = scnprintf(str, size, "level = %d\n", venc->params.level);
		break;
	case 2:
		num = scnprintf(str, size, "fps = %d/%d\n",
				venc->params.frame_rate.numerator,
				venc->params.frame_rate.denominator);
		break;
	case 3:
		num = scnprintf(str, size, "%d x %d -> %d x %d\n",
				venc->params.src_width,
				venc->params.src_height,
				venc->params.out_width,
				venc->params.out_height);
		break;
	case 4:
		num = scnprintf(str, size, "(%d, %d)  %d x %d\n",
				venc->params.crop.left,
				venc->params.crop.top,
				venc->params.crop.width,
				venc->params.crop.height);
		break;
	case 5:
		num = scnprintf(str, size,
				"enable = 0x%x, input = %d, encode = %d, ready = %d, stopped = %d\n",
				venc->enable,
				venc->frame_count, venc->encode_count,
				venc->ready_count,
				venc->stopped);
		break;
	case 6:
		num = scnprintf(str, size, "gop = %d\n", venc->params.gop_length);
		break;
	case 7:
		num = scnprintf(str, size, "bframes = %d\n", venc->params.bframes);
		break;
	case 8:
		num = scnprintf(str, size, "rc: %s, mode = %d, bitrate = %d(%d), qp = %d\n",
				venc->params.rc_enable ? "enable" : "disable",
				venc->params.rc_mode,
				venc->params.bitrate,
				venc->params.bitrate_max,
				venc->params.i_frame_qp);
		break;
	case 9:
		num = scnprintf(str, size, "sar: enable = %d, idc = %d, %d x %d\n",
				venc->params.sar.enable,
				venc->params.sar.idc,
				venc->params.sar.width,
				venc->params.sar.height);

		break;
	case 10:
		num = scnprintf(str, size,
				"colorspace: primaries = %d, transfer = %d, matrix = %d, full_range = %d\n",
				venc->params.color.primaries,
				venc->params.color.transfer,
				venc->params.color.matrix,
				venc->params.color.full_range);
		break;
	case 11:
		num = scnprintf(str, size, "skipped: count = %d, bytes = %d\n",
				venc->skipped_count, venc->skipped_bytes);
		break;
	default:
		break;
	}

	return num;
}

static struct vpu_inst_ops venc_inst_ops = {
	.ctrl_init = venc_ctrl_init,
	.check_ready = venc_check_ready,
	.input_done = venc_input_done,
	.get_one_frame = venc_frame_encoded,
	.stop_done = venc_stop_done,
	.event_notify = venc_event_notify,
	.release = venc_release,
	.cleanup = venc_cleanup,
	.start = venc_start_session,
	.mem_request = venc_request_mem_resource,
	.stop = venc_stop_session,
	.process_output = venc_process_output,
	.process_capture = venc_process_capture,
	.on_queue_empty = venc_on_queue_empty,
	.get_debug_info = venc_get_debug_info,
	.wait_prepare = vpu_inst_unlock,
	.wait_finish = vpu_inst_lock,
};

static void venc_init(struct file *file)
{
	struct vpu_inst *inst = to_inst(file);
	struct venc_t *venc;
	struct v4l2_format f;
	struct v4l2_streamparm parm;

	venc = inst->priv;
	venc->params.qp_min = 1;
	venc->params.qp_max = 51;
	venc->params.qp_min_i = 1;
	venc->params.qp_max_i = 51;
	venc->params.bitrate_min = BITRATE_MIN;

	memset(&f, 0, sizeof(f));
	f.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
	f.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_NV12M;
	f.fmt.pix_mp.width = 1280;
	f.fmt.pix_mp.height = 720;
	f.fmt.pix_mp.field = V4L2_FIELD_NONE;
	venc_s_fmt(file, &inst->fh, &f);

	memset(&f, 0, sizeof(f));
	f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
	f.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_H264;
	f.fmt.pix_mp.width = 1280;
	f.fmt.pix_mp.height = 720;
	f.fmt.pix_mp.field = V4L2_FIELD_NONE;
	venc_s_fmt(file, &inst->fh, &f);

	memset(&parm, 0, sizeof(parm));
	parm.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
	parm.parm.capture.timeperframe.numerator = 1;
	parm.parm.capture.timeperframe.denominator = 30;
	venc_s_parm(file, &inst->fh, &parm);
}

static int venc_open(struct file *file)
{
	struct vpu_inst *inst;
	struct venc_t *venc;
	int ret;

	inst = vzalloc(sizeof(*inst));
	if (!inst)
		return -ENOMEM;

	venc = vzalloc(sizeof(*venc));
	if (!venc) {
		vfree(inst);
		return -ENOMEM;
	}

	inst->ops = &venc_inst_ops;
	inst->formats = venc_formats;
	inst->type = VPU_CORE_TYPE_ENC;
	inst->priv = venc;
	INIT_LIST_HEAD(&venc->frames);
	init_waitqueue_head(&venc->wq);

	ret = vpu_v4l2_open(file, inst);
	if (ret)
		return ret;

	inst->min_buffer_out = VENC_MIN_BUFFER_OUT;
	inst->min_buffer_cap = VENC_MIN_BUFFER_CAP;
	venc_init(file);

	return 0;
}

static const struct v4l2_file_operations venc_fops = {
	.owner = THIS_MODULE,
	.open = venc_open,
	.release = vpu_v4l2_close,
	.unlocked_ioctl = video_ioctl2,
	.poll = v4l2_m2m_fop_poll,
	.mmap = v4l2_m2m_fop_mmap,
};

const struct v4l2_ioctl_ops *venc_get_ioctl_ops(void)
{
	return &venc_ioctl_ops;
}

const struct v4l2_file_operations *venc_get_fops(void)
{
	return &venc_fops;
}
