root/drivers/media/platform/qcom/venus/venc.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
 * Copyright (C) 2017 Linaro Ltd.
 */
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ctrls.h>

#include "hfi_venus_io.h"
#include "hfi_parser.h"
#include "core.h"
#include "helpers.h"
#include "venc.h"
#include "pm_helpers.h"

#define NUM_B_FRAMES_MAX        4

/*
 * Three resons to keep MPLANE formats (despite that the number of planes
 * currently is one):
 * - the MPLANE formats allow only one plane to be used
 * - the downstream driver use MPLANE formats too
 * - future firmware versions could add support for >1 planes
 */
static const struct venus_format venc_formats[] = {
        [VENUS_FMT_NV12] = {
                .pixfmt = V4L2_PIX_FMT_NV12,
                .num_planes = 1,
                .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
        },
        [VENUS_FMT_H264] = {
                .pixfmt = V4L2_PIX_FMT_H264,
                .num_planes = 1,
                .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
        },
        [VENUS_FMT_VP8] = {
                .pixfmt = V4L2_PIX_FMT_VP8,
                .num_planes = 1,
                .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
        },
        [VENUS_FMT_HEVC] = {
                .pixfmt = V4L2_PIX_FMT_HEVC,
                .num_planes = 1,
                .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
        },
        [VENUS_FMT_MPEG4] = {
                .pixfmt = V4L2_PIX_FMT_MPEG4,
                .num_planes = 1,
                .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
        },
        [VENUS_FMT_H263] = {
                .pixfmt = V4L2_PIX_FMT_H263,
                .num_planes = 1,
                .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
        },
};

static const struct venus_format *
find_format(struct venus_inst *inst, u32 pixfmt, u32 type)
{
        const struct venus_format *fmt = venc_formats;
        unsigned int size = ARRAY_SIZE(venc_formats);
        unsigned int i;

        for (i = 0; i < size; i++) {
                if (fmt[i].pixfmt == pixfmt)
                        break;
        }

        if (i == size || fmt[i].type != type)
                return NULL;

        if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
            !venus_helper_check_codec(inst, fmt[i].pixfmt))
                return NULL;

        return &fmt[i];
}

static const struct venus_format *
find_format_by_index(struct venus_inst *inst, unsigned int index, u32 type)
{
        const struct venus_format *fmt = venc_formats;
        unsigned int size = ARRAY_SIZE(venc_formats);
        unsigned int i, k = 0;

        if (index > size)
                return NULL;

        for (i = 0; i < size; i++) {
                bool valid;

                if (fmt[i].type != type)
                        continue;
                valid = type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
                        venus_helper_check_codec(inst, fmt[i].pixfmt);
                if (k == index && valid)
                        break;
                if (valid)
                        k++;
        }

        if (i == size)
                return NULL;

        return &fmt[i];
}

static int venc_v4l2_to_hfi(int id, int value)
{
        switch (id) {
        case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
                switch (value) {
                case V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC:
                default:
                        return HFI_H264_ENTROPY_CAVLC;
                case V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC:
                        return HFI_H264_ENTROPY_CABAC;
                }
        case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
                switch (value) {
                case V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED:
                default:
                        return HFI_H264_DB_MODE_ALL_BOUNDARY;
                case V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED:
                        return HFI_H264_DB_MODE_DISABLE;
                case V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY:
                        return HFI_H264_DB_MODE_SKIP_SLICE_BOUNDARY;
                }
        }

        return 0;
}

static int
venc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
{
        struct venus_inst *inst = to_inst(file);
        struct venus_core *core = inst->core;

        strscpy(cap->driver, "qcom-venus", sizeof(cap->driver));
        strscpy(cap->card, "Qualcomm Venus video encoder", sizeof(cap->card));
        snprintf(cap->bus_info, sizeof(cap->bus_info),
                 "plat:%s:enc", dev_name(core->dev));

        return 0;
}

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

        fmt = find_format_by_index(inst, f->index, f->type);

        memset(f->reserved, 0, sizeof(f->reserved));

        if (!fmt)
                return -EINVAL;

        f->pixelformat = fmt->pixfmt;

        return 0;
}

static const struct venus_format *
venc_try_fmt_common(struct venus_inst *inst, struct v4l2_format *f)
{
        struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
        struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
        const struct venus_format *fmt;
        u32 sizeimage;

        memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
        memset(pixmp->reserved, 0, sizeof(pixmp->reserved));

        fmt = find_format(inst, pixmp->pixelformat, f->type);
        if (!fmt) {
                if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
                        pixmp->pixelformat = V4L2_PIX_FMT_H264;
                else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                        pixmp->pixelformat = V4L2_PIX_FMT_NV12;
                else
                        return NULL;
                fmt = find_format(inst, pixmp->pixelformat, f->type);
                if (!fmt)
                        return NULL;
        }

        pixmp->width = clamp(pixmp->width, frame_width_min(inst),
                             frame_width_max(inst));
        pixmp->height = clamp(pixmp->height, frame_height_min(inst),
                              frame_height_max(inst));

        pixmp->width = ALIGN(pixmp->width, 128);
        pixmp->height = ALIGN(pixmp->height, 32);

        pixmp->width = ALIGN(pixmp->width, 2);
        pixmp->height = ALIGN(pixmp->height, 2);

        if (pixmp->field == V4L2_FIELD_ANY)
                pixmp->field = V4L2_FIELD_NONE;
        pixmp->num_planes = fmt->num_planes;
        pixmp->flags = 0;

        sizeimage = venus_helper_get_framesz(pixmp->pixelformat,
                                             pixmp->width,
                                             pixmp->height);
        pfmt[0].sizeimage = max(ALIGN(pfmt[0].sizeimage, SZ_4K), sizeimage);

        if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                pfmt[0].bytesperline = ALIGN(pixmp->width, 128);
        else
                pfmt[0].bytesperline = 0;

        return fmt;
}

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

        venc_try_fmt_common(inst, f);

        return 0;
}

static int venc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
        struct venus_inst *inst = to_inst(file);
        struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
        struct v4l2_pix_format_mplane orig_pixmp;
        const struct venus_format *fmt;
        struct v4l2_format format;
        u32 pixfmt_out = 0, pixfmt_cap = 0;
        struct vb2_queue *q;

        q = v4l2_m2m_get_vq(inst->m2m_ctx, f->type);

        if (vb2_is_busy(q))
                return -EBUSY;

        orig_pixmp = *pixmp;

        fmt = venc_try_fmt_common(inst, f);
        if (!fmt)
                return -EINVAL;

        if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
                pixfmt_out = pixmp->pixelformat;
                pixfmt_cap = inst->fmt_cap->pixfmt;
        } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
                pixfmt_cap = pixmp->pixelformat;
                pixfmt_out = inst->fmt_out->pixfmt;
        }

        memset(&format, 0, sizeof(format));

        format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
        format.fmt.pix_mp.pixelformat = pixfmt_out;
        format.fmt.pix_mp.width = orig_pixmp.width;
        format.fmt.pix_mp.height = orig_pixmp.height;
        venc_try_fmt_common(inst, &format);

        if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
                inst->out_width = format.fmt.pix_mp.width;
                inst->out_height = format.fmt.pix_mp.height;
                inst->colorspace = pixmp->colorspace;
                inst->ycbcr_enc = pixmp->ycbcr_enc;
                inst->quantization = pixmp->quantization;
                inst->xfer_func = pixmp->xfer_func;
        }

        memset(&format, 0, sizeof(format));

        format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
        format.fmt.pix_mp.pixelformat = pixfmt_cap;
        format.fmt.pix_mp.width = orig_pixmp.width;
        format.fmt.pix_mp.height = orig_pixmp.height;
        venc_try_fmt_common(inst, &format);

        inst->width = format.fmt.pix_mp.width;
        inst->height = format.fmt.pix_mp.height;

        if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                inst->fmt_out = fmt;
        else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
                inst->fmt_cap = fmt;
                inst->output_buf_size = pixmp->plane_fmt[0].sizeimage;
        }

        return 0;
}

static int venc_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
        struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
        struct venus_inst *inst = to_inst(file);
        const struct venus_format *fmt;

        if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
                fmt = inst->fmt_cap;
        else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                fmt = inst->fmt_out;
        else
                return -EINVAL;

        pixmp->pixelformat = fmt->pixfmt;

        if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
                pixmp->width = inst->width;
                pixmp->height = inst->height;
                pixmp->colorspace = inst->colorspace;
                pixmp->ycbcr_enc = inst->ycbcr_enc;
                pixmp->quantization = inst->quantization;
                pixmp->xfer_func = inst->xfer_func;
        } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
                pixmp->width = inst->out_width;
                pixmp->height = inst->out_height;
        }

        venc_try_fmt_common(inst, f);

        return 0;
}

static int
venc_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
        struct venus_inst *inst = to_inst(file);

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

        switch (s->target) {
        case V4L2_SEL_TGT_CROP_DEFAULT:
        case V4L2_SEL_TGT_CROP_BOUNDS:
                s->r.width = inst->out_width;
                s->r.height = inst->out_height;
                break;
        case V4L2_SEL_TGT_CROP:
                s->r.width = inst->width;
                s->r.height = inst->height;
                break;
        default:
                return -EINVAL;
        }

        s->r.top = 0;
        s->r.left = 0;

        return 0;
}

static int
venc_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
        struct venus_inst *inst = to_inst(file);

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

        if (s->r.width > inst->out_width ||
            s->r.height > inst->out_height)
                return -EINVAL;

        s->r.width = ALIGN(s->r.width, 2);
        s->r.height = ALIGN(s->r.height, 2);

        switch (s->target) {
        case V4L2_SEL_TGT_CROP:
                s->r.top = 0;
                s->r.left = 0;
                inst->width = s->r.width;
                inst->height = s->r.height;
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

static int venc_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
{
        struct venus_inst *inst = to_inst(file);
        struct v4l2_outputparm *out = &a->parm.output;
        struct v4l2_fract *timeperframe = &out->timeperframe;
        u64 us_per_frame, fps;

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

        memset(out->reserved, 0, sizeof(out->reserved));

        if (!timeperframe->denominator)
                timeperframe->denominator = inst->timeperframe.denominator;
        if (!timeperframe->numerator)
                timeperframe->numerator = inst->timeperframe.numerator;

        out->capability = V4L2_CAP_TIMEPERFRAME;

        us_per_frame = timeperframe->numerator * (u64)USEC_PER_SEC;
        do_div(us_per_frame, timeperframe->denominator);

        us_per_frame = clamp(us_per_frame, 1, USEC_PER_SEC);
        fps = USEC_PER_SEC / (u32)us_per_frame;
        fps = min(VENUS_MAX_FPS, fps);

        inst->timeperframe = *timeperframe;
        inst->fps = fps;

        return 0;
}

static int venc_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
{
        struct venus_inst *inst = to_inst(file);

        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 = inst->timeperframe;

        return 0;
}

static int venc_enum_framesizes(struct file *file, void *fh,
                                struct v4l2_frmsizeenum *fsize)
{
        struct venus_inst *inst = to_inst(file);
        const struct venus_format *fmt;

        fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;

        fmt = find_format(inst, fsize->pixel_format,
                          V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
        if (!fmt) {
                fmt = find_format(inst, fsize->pixel_format,
                                  V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
                if (!fmt)
                        return -EINVAL;
        }

        if (fsize->index)
                return -EINVAL;

        fsize->stepwise.min_width = frame_width_min(inst);
        fsize->stepwise.max_width = frame_width_max(inst);
        fsize->stepwise.step_width = frame_width_step(inst);
        fsize->stepwise.min_height = frame_height_min(inst);
        fsize->stepwise.max_height = frame_height_max(inst);
        fsize->stepwise.step_height = frame_height_step(inst);

        return 0;
}

static int venc_enum_frameintervals(struct file *file, void *fh,
                                    struct v4l2_frmivalenum *fival)
{
        struct venus_inst *inst = to_inst(file);
        const struct venus_format *fmt;
        unsigned int framerate_factor = 1;

        fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;

        fmt = find_format(inst, fival->pixel_format,
                          V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
        if (!fmt) {
                fmt = find_format(inst, fival->pixel_format,
                                  V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
                if (!fmt)
                        return -EINVAL;
        }

        if (fival->index)
                return -EINVAL;

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

        if (fival->width > frame_width_max(inst) ||
            fival->width < frame_width_min(inst) ||
            fival->height > frame_height_max(inst) ||
            fival->height < frame_height_min(inst))
                return -EINVAL;

        if (IS_V1(inst->core)) {
                /* framerate is reported in 1/65535 fps unit */
                framerate_factor = (1 << 16);
        }

        fival->stepwise.min.numerator = 1;
        fival->stepwise.min.denominator = frate_max(inst) / framerate_factor;
        fival->stepwise.max.numerator = 1;
        fival->stepwise.max.denominator = frate_min(inst) / framerate_factor;
        fival->stepwise.step.numerator = 1;
        fival->stepwise.step.denominator = frate_max(inst) / framerate_factor;

        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, 2, NULL);
        case V4L2_EVENT_CTRL:
                return v4l2_ctrl_subscribe_event(fh, sub);
        default:
                return -EINVAL;
        }
}

static int
venc_encoder_cmd(struct file *file, void *fh, struct v4l2_encoder_cmd *cmd)
{
        struct venus_inst *inst = to_inst(file);
        struct hfi_frame_data fdata = {0};
        int ret = 0;

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

        mutex_lock(&inst->lock);

        if (cmd->cmd == V4L2_ENC_CMD_STOP &&
            inst->enc_state == VENUS_ENC_STATE_ENCODING) {
                /*
                 * Implement V4L2_ENC_CMD_STOP by enqueue an empty buffer on
                 * encoder input to signal EOS.
                 */
                if (!(inst->streamon_out && inst->streamon_cap))
                        goto unlock;

                fdata.buffer_type = HFI_BUFFER_INPUT;
                fdata.flags |= HFI_BUFFERFLAG_EOS;
                fdata.device_addr = 0xdeadb000;

                ret = hfi_session_process_buf(inst, &fdata);

                inst->enc_state = VENUS_ENC_STATE_DRAIN;
        } else if (cmd->cmd == V4L2_ENC_CMD_START) {
                if (inst->enc_state == VENUS_ENC_STATE_DRAIN) {
                        ret = -EBUSY;
                        goto unlock;
                }
                if (inst->enc_state == VENUS_ENC_STATE_STOPPED) {
                        vb2_clear_last_buffer_dequeued(&inst->fh.m2m_ctx->cap_q_ctx.q);
                        inst->enc_state = VENUS_ENC_STATE_ENCODING;
                }
        }

unlock:
        mutex_unlock(&inst->lock);
        return ret;
}

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_s_fmt_vid_cap_mplane = venc_s_fmt,
        .vidioc_s_fmt_vid_out_mplane = venc_s_fmt,
        .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_g_selection = venc_g_selection,
        .vidioc_s_selection = venc_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_s_parm = venc_s_parm,
        .vidioc_g_parm = venc_g_parm,
        .vidioc_enum_framesizes = venc_enum_framesizes,
        .vidioc_enum_frameintervals = venc_enum_frameintervals,
        .vidioc_subscribe_event = venc_subscribe_event,
        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
        .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
        .vidioc_encoder_cmd = venc_encoder_cmd,
};

static int venc_pm_get(struct venus_inst *inst)
{
        struct venus_core *core = inst->core;
        struct device *dev = core->dev_enc;
        int ret;

        mutex_lock(&core->pm_lock);
        ret = pm_runtime_resume_and_get(dev);
        mutex_unlock(&core->pm_lock);

        return ret < 0 ? ret : 0;
}

static int venc_pm_put(struct venus_inst *inst, bool autosuspend)
{
        struct venus_core *core = inst->core;
        struct device *dev = core->dev_enc;
        int ret;

        mutex_lock(&core->pm_lock);

        if (autosuspend)
                ret = pm_runtime_put_autosuspend(dev);
        else
                ret = pm_runtime_put_sync(dev);

        mutex_unlock(&core->pm_lock);

        return ret < 0 ? ret : 0;
}

static int venc_pm_get_put(struct venus_inst *inst)
{
        struct venus_core *core = inst->core;
        struct device *dev = core->dev_enc;
        int ret = 0;

        mutex_lock(&core->pm_lock);

        if (pm_runtime_suspended(dev)) {
                ret = pm_runtime_resume_and_get(dev);
                if (ret < 0)
                        goto error;

                ret = pm_runtime_put_autosuspend(dev);
        }

error:
        mutex_unlock(&core->pm_lock);

        return ret < 0 ? ret : 0;
}

static void venc_pm_touch(struct venus_inst *inst)
{
        pm_runtime_mark_last_busy(inst->core->dev_enc);
}

static int venc_set_properties(struct venus_inst *inst)
{
        struct venc_controls *ctr = &inst->controls.enc;
        struct hfi_intra_period intra_period;
        struct hfi_framerate frate;
        struct hfi_bitrate brate;
        struct hfi_idr_period idrp;
        struct hfi_quantization quant;
        struct hfi_quantization_range quant_range;
        struct hfi_quantization_range_v2 quant_range_v2;
        struct hfi_enable en;
        struct hfi_ltr_mode ltr_mode;
        struct hfi_intra_refresh intra_refresh = {};
        u32 ptype, rate_control, bitrate;
        u32 profile, level;
        int ret;

        ret = venus_helper_set_work_mode(inst);
        if (ret)
                return ret;

        ptype = HFI_PROPERTY_CONFIG_FRAME_RATE;
        frate.buffer_type = HFI_BUFFER_OUTPUT;
        frate.framerate = inst->fps * (1 << 16);

        ret = hfi_session_set_property(inst, ptype, &frate);
        if (ret)
                return ret;

        if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264) {
                struct hfi_h264_vui_timing_info info;
                struct hfi_h264_entropy_control entropy;
                struct hfi_h264_db_control deblock;
                struct hfi_h264_8x8_transform h264_transform;

                ptype = HFI_PROPERTY_PARAM_VENC_H264_VUI_TIMING_INFO;
                info.enable = 1;
                info.fixed_framerate = 1;
                info.time_scale = NSEC_PER_SEC;

                ret = hfi_session_set_property(inst, ptype, &info);
                if (ret)
                        return ret;

                ptype = HFI_PROPERTY_PARAM_VENC_H264_ENTROPY_CONTROL;
                entropy.entropy_mode = venc_v4l2_to_hfi(
                                          V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE,
                                          ctr->h264_entropy_mode);
                entropy.cabac_model = HFI_H264_CABAC_MODEL_0;

                ret = hfi_session_set_property(inst, ptype, &entropy);
                if (ret)
                        return ret;

                ptype = HFI_PROPERTY_PARAM_VENC_H264_DEBLOCK_CONTROL;
                deblock.mode = venc_v4l2_to_hfi(
                                      V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
                                      ctr->h264_loop_filter_mode);
                deblock.slice_alpha_offset = ctr->h264_loop_filter_alpha;
                deblock.slice_beta_offset = ctr->h264_loop_filter_beta;

                ret = hfi_session_set_property(inst, ptype, &deblock);
                if (ret)
                        return ret;

                ptype = HFI_PROPERTY_PARAM_VENC_H264_TRANSFORM_8X8;
                h264_transform.enable_type = 0;
                if (ctr->profile.h264 == V4L2_MPEG_VIDEO_H264_PROFILE_HIGH ||
                    ctr->profile.h264 == V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_HIGH)
                        h264_transform.enable_type = ctr->h264_8x8_transform;

                ret = hfi_session_set_property(inst, ptype, &h264_transform);
                if (ret)
                        return ret;

                if (ctr->layer_bitrate) {
                        unsigned int i;

                        ptype = HFI_PROPERTY_PARAM_VENC_HIER_P_MAX_NUM_ENH_LAYER;
                        ret = hfi_session_set_property(inst, ptype, &ctr->h264_hier_layers);
                        if (ret)
                                return ret;

                        ptype = HFI_PROPERTY_CONFIG_VENC_HIER_P_ENH_LAYER;
                        ret = hfi_session_set_property(inst, ptype, &ctr->layer_bitrate);
                        if (ret)
                                return ret;

                        for (i = 0; i < ctr->h264_hier_layers; ++i) {
                                ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
                                brate.bitrate = ctr->h264_hier_layer_bitrate[i];
                                brate.layer_id = i;

                                ret = hfi_session_set_property(inst, ptype, &brate);
                                if (ret)
                                        return ret;
                        }
                }
        }

        if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
            inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
                /* IDR periodicity, n:
                 * n = 0 - only the first I-frame is IDR frame
                 * n = 1 - all I-frames will be IDR frames
                 * n > 1 - every n-th I-frame will be IDR frame
                 */
                ptype = HFI_PROPERTY_CONFIG_VENC_IDR_PERIOD;
                idrp.idr_period = 0;
                ret = hfi_session_set_property(inst, ptype, &idrp);
                if (ret)
                        return ret;
        }

        if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC &&
            ctr->profile.hevc == V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10) {
                struct hfi_hdr10_pq_sei hdr10;
                unsigned int c;

                ptype = HFI_PROPERTY_PARAM_VENC_HDR10_PQ_SEI;

                for (c = 0; c < 3; c++) {
                        hdr10.mastering.display_primaries_x[c] =
                                ctr->mastering.display_primaries_x[c];
                        hdr10.mastering.display_primaries_y[c] =
                                ctr->mastering.display_primaries_y[c];
                }

                hdr10.mastering.white_point_x = ctr->mastering.white_point_x;
                hdr10.mastering.white_point_y = ctr->mastering.white_point_y;
                hdr10.mastering.max_display_mastering_luminance =
                        ctr->mastering.max_display_mastering_luminance;
                hdr10.mastering.min_display_mastering_luminance =
                        ctr->mastering.min_display_mastering_luminance;

                hdr10.cll.max_content_light = ctr->cll.max_content_light_level;
                hdr10.cll.max_pic_average_light =
                        ctr->cll.max_pic_average_light_level;

                ret = hfi_session_set_property(inst, ptype, &hdr10);
                if (ret)
                        return ret;
        }

        if (ctr->num_b_frames) {
                u32 max_num_b_frames = NUM_B_FRAMES_MAX;

                ptype = HFI_PROPERTY_PARAM_VENC_MAX_NUM_B_FRAMES;
                ret = hfi_session_set_property(inst, ptype, &max_num_b_frames);
                if (ret)
                        return ret;
        }

        ptype = HFI_PROPERTY_CONFIG_VENC_INTRA_PERIOD;
        intra_period.pframes = ctr->num_p_frames;
        intra_period.bframes = ctr->num_b_frames;

        ret = hfi_session_set_property(inst, ptype, &intra_period);
        if (ret)
                return ret;

        if (!ctr->rc_enable)
                rate_control = HFI_RATE_CONTROL_OFF;
        else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
                rate_control = ctr->frame_skip_mode ? HFI_RATE_CONTROL_VBR_VFR :
                                                      HFI_RATE_CONTROL_VBR_CFR;
        else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
                rate_control = ctr->frame_skip_mode ? HFI_RATE_CONTROL_CBR_VFR :
                                                      HFI_RATE_CONTROL_CBR_CFR;
        else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CQ)
                rate_control = HFI_RATE_CONTROL_CQ;

        ptype = HFI_PROPERTY_PARAM_VENC_RATE_CONTROL;
        ret = hfi_session_set_property(inst, ptype, &rate_control);
        if (ret)
                return ret;

        if (rate_control == HFI_RATE_CONTROL_CQ && ctr->const_quality) {
                struct hfi_heic_frame_quality quality = {};

                ptype = HFI_PROPERTY_CONFIG_HEIC_FRAME_QUALITY;
                quality.frame_quality = ctr->const_quality;
                ret = hfi_session_set_property(inst, ptype, &quality);
                if (ret)
                        return ret;
        }

        if (!ctr->layer_bitrate) {
                if (!ctr->bitrate)
                        bitrate = 64000;
                else
                        bitrate = ctr->bitrate;

                ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
                brate.bitrate = bitrate;
                brate.layer_id = 0;

                ret = hfi_session_set_property(inst, ptype, &brate);
                if (ret)
                        return ret;

                if (!ctr->bitrate_peak)
                        bitrate *= 2;
                else
                        bitrate = ctr->bitrate_peak;

                ptype = HFI_PROPERTY_CONFIG_VENC_MAX_BITRATE;
                brate.bitrate = bitrate;
                brate.layer_id = 0;

                ret = hfi_session_set_property(inst, ptype, &brate);
                if (ret)
                        return ret;
        }

        if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
            inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
                ptype = HFI_PROPERTY_CONFIG_VENC_SYNC_FRAME_SEQUENCE_HEADER;
                if (ctr->header_mode == V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE)
                        en.enable = 0;
                else
                        en.enable = 1;

                ret = hfi_session_set_property(inst, ptype, &en);
                if (ret)
                        return ret;
        }

        ptype = HFI_PROPERTY_PARAM_VENC_SESSION_QP;
        if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
                quant.qp_i = ctr->hevc_i_qp;
                quant.qp_p = ctr->hevc_p_qp;
                quant.qp_b = ctr->hevc_b_qp;
        } else {
                quant.qp_i = ctr->h264_i_qp;
                quant.qp_p = ctr->h264_p_qp;
                quant.qp_b = ctr->h264_b_qp;
        }
        quant.layer_id = 0;
        ret = hfi_session_set_property(inst, ptype, &quant);
        if (ret)
                return ret;

        if (inst->core->res->hfi_version == HFI_VERSION_4XX ||
            inst->core->res->hfi_version == HFI_VERSION_6XX) {
                ptype = HFI_PROPERTY_PARAM_VENC_SESSION_QP_RANGE_V2;

                if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
                        quant_range_v2.min_qp.qp_packed = ctr->hevc_min_qp;
                        quant_range_v2.max_qp.qp_packed = ctr->hevc_max_qp;
                } else if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_VP8) {
                        quant_range_v2.min_qp.qp_packed = ctr->vp8_min_qp;
                        quant_range_v2.max_qp.qp_packed = ctr->vp8_max_qp;
                } else {
                        quant_range_v2.min_qp.qp_packed = ctr->h264_min_qp;
                        quant_range_v2.max_qp.qp_packed = ctr->h264_max_qp;
                }

                ret = hfi_session_set_property(inst, ptype, &quant_range_v2);
        } else {
                ptype = HFI_PROPERTY_PARAM_VENC_SESSION_QP_RANGE;

                if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
                        quant_range.min_qp = ctr->hevc_min_qp;
                        quant_range.max_qp = ctr->hevc_max_qp;
                } else if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_VP8) {
                        quant_range.min_qp = ctr->vp8_min_qp;
                        quant_range.max_qp = ctr->vp8_max_qp;
                } else {
                        quant_range.min_qp = ctr->h264_min_qp;
                        quant_range.max_qp = ctr->h264_max_qp;
                }

                quant_range.layer_id = 0;
                ret = hfi_session_set_property(inst, ptype, &quant_range);
        }

        if (ret)
                return ret;

        ptype = HFI_PROPERTY_PARAM_VENC_LTRMODE;
        ltr_mode.ltr_count = ctr->ltr_count;
        ltr_mode.ltr_mode = HFI_LTR_MODE_MANUAL;
        ltr_mode.trust_mode = 1;
        ret = hfi_session_set_property(inst, ptype, &ltr_mode);
        if (ret)
                return ret;

        switch (inst->hfi_codec) {
        case HFI_VIDEO_CODEC_H264:
                profile = ctr->profile.h264;
                level = ctr->level.h264;
                break;
        case HFI_VIDEO_CODEC_MPEG4:
                profile = ctr->profile.mpeg4;
                level = ctr->level.mpeg4;
                break;
        case HFI_VIDEO_CODEC_VP8:
                profile = ctr->profile.vp8;
                level = 0;
                break;
        case HFI_VIDEO_CODEC_VP9:
                profile = ctr->profile.vp9;
                level = ctr->level.vp9;
                break;
        case HFI_VIDEO_CODEC_HEVC:
                profile = ctr->profile.hevc;
                level = ctr->level.hevc;
                break;
        case HFI_VIDEO_CODEC_MPEG2:
        default:
                profile = 0;
                level = 0;
                break;
        }

        ret = venus_helper_set_profile_level(inst, profile, level);
        if (ret)
                return ret;

        if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
            inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
                struct hfi_enable en = {};

                ptype = HFI_PROPERTY_PARAM_VENC_H264_GENERATE_AUDNAL;

                if (ctr->aud_enable)
                        en.enable = 1;

                ret = hfi_session_set_property(inst, ptype, &en);
        }

        if ((inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
             inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) &&
            (rate_control == HFI_RATE_CONTROL_CBR_VFR ||
             rate_control == HFI_RATE_CONTROL_CBR_CFR)) {
                intra_refresh.mode = HFI_INTRA_REFRESH_NONE;
                intra_refresh.cir_mbs = 0;

                if (ctr->intra_refresh_period) {
                        u32 mbs;

                        mbs = ALIGN(inst->width, 16) * ALIGN(inst->height, 16);
                        mbs /= 16 * 16;
                        if (mbs % ctr->intra_refresh_period)
                                mbs++;
                        mbs /= ctr->intra_refresh_period;

                        intra_refresh.cir_mbs = mbs;
                        if (ctr->intra_refresh_type ==
                            V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE_CYCLIC)
                                intra_refresh.mode = HFI_INTRA_REFRESH_CYCLIC;
                        else
                                intra_refresh.mode = HFI_INTRA_REFRESH_RANDOM;
                }

                ptype = HFI_PROPERTY_PARAM_VENC_INTRA_REFRESH;

                ret = hfi_session_set_property(inst, ptype, &intra_refresh);
                if (ret)
                        return ret;
        }

        return 0;
}

static int venc_init_session(struct venus_inst *inst)
{
        int ret;

        ret = venus_helper_session_init(inst);
        if (ret == -EALREADY)
                return 0;
        else if (ret)
                return ret;

        ret = venus_helper_set_stride(inst, inst->out_width,
                                      inst->out_height);
        if (ret)
                goto deinit;

        ret = venus_helper_set_input_resolution(inst, inst->width,
                                                inst->height);
        if (ret)
                goto deinit;

        ret = venus_helper_set_output_resolution(inst, inst->width,
                                                 inst->height,
                                                 HFI_BUFFER_OUTPUT);
        if (ret)
                goto deinit;

        ret = venus_helper_set_color_format(inst, inst->fmt_out->pixfmt);
        if (ret)
                goto deinit;

        ret = venc_set_properties(inst);
        if (ret)
                goto deinit;

        return 0;
deinit:
        hfi_session_deinit(inst);
        return ret;
}

static int venc_out_num_buffers(struct venus_inst *inst, unsigned int *num)
{
        struct hfi_buffer_requirements bufreq;
        int ret;

        ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
        if (ret)
                return ret;

        *num = bufreq.count_actual;

        return 0;
}

static int venc_queue_setup(struct vb2_queue *q,
                            unsigned int *num_buffers, unsigned int *num_planes,
                            unsigned int sizes[], struct device *alloc_devs[])
{
        struct venus_inst *inst = vb2_get_drv_priv(q);
        struct venus_core *core = inst->core;
        unsigned int num, min = 4;
        int ret;

        if (*num_planes) {
                if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
                    *num_planes != inst->fmt_out->num_planes)
                        return -EINVAL;

                if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
                    *num_planes != inst->fmt_cap->num_planes)
                        return -EINVAL;

                if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
                    sizes[0] < inst->input_buf_size)
                        return -EINVAL;

                if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
                    sizes[0] < inst->output_buf_size)
                        return -EINVAL;

                return 0;
        }

        if (test_bit(0, &core->sys_error)) {
                if (inst->nonblock)
                        return -EAGAIN;

                ret = wait_event_interruptible(core->sys_err_done,
                                               !test_bit(0, &core->sys_error));
                if (ret)
                        return ret;
        }

        ret = venc_pm_get(inst);
        if (ret)
                return ret;

        mutex_lock(&inst->lock);
        ret = venc_init_session(inst);
        mutex_unlock(&inst->lock);

        if (ret)
                goto put_power;

        ret = venc_pm_put(inst, false);
        if (ret)
                return ret;

        switch (q->type) {
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
                *num_planes = inst->fmt_out->num_planes;

                ret = venc_out_num_buffers(inst, &num);
                if (ret)
                        break;

                num = max(num, min);
                *num_buffers = max(*num_buffers, num);
                inst->num_input_bufs = *num_buffers;

                sizes[0] = venus_helper_get_framesz(inst->fmt_out->pixfmt,
                                                    inst->out_width,
                                                    inst->out_height);
                inst->input_buf_size = sizes[0];
                break;
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
                *num_planes = inst->fmt_cap->num_planes;
                *num_buffers = max(*num_buffers, min);
                inst->num_output_bufs = *num_buffers;
                sizes[0] = venus_helper_get_framesz(inst->fmt_cap->pixfmt,
                                                    inst->width,
                                                    inst->height);
                sizes[0] = max(sizes[0], inst->output_buf_size);
                inst->output_buf_size = sizes[0];
                break;
        default:
                ret = -EINVAL;
                break;
        }

        return ret;
put_power:
        venc_pm_put(inst, false);
        return ret;
}

static int venc_buf_init(struct vb2_buffer *vb)
{
        struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);

        inst->buf_count++;

        return venus_helper_vb2_buf_init(vb);
}

static void venc_release_session(struct venus_inst *inst)
{
        int ret;

        venc_pm_get(inst);

        mutex_lock(&inst->lock);

        ret = hfi_session_deinit(inst);
        if (ret || inst->session_error)
                hfi_session_abort(inst);

        mutex_unlock(&inst->lock);

        venus_pm_load_scale(inst);
        INIT_LIST_HEAD(&inst->registeredbufs);
        venus_pm_release_core(inst);

        venc_pm_put(inst, false);
}

static void venc_buf_cleanup(struct vb2_buffer *vb)
{
        struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
        struct venus_buffer *buf = to_venus_buffer(vbuf);

        mutex_lock(&inst->lock);
        if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
                if (!list_empty(&inst->registeredbufs))
                        list_del_init(&buf->reg_list);
        mutex_unlock(&inst->lock);

        inst->buf_count--;
        if (!inst->buf_count)
                venc_release_session(inst);
}

static int venc_verify_conf(struct venus_inst *inst)
{
        enum hfi_version ver = inst->core->res->hfi_version;
        struct hfi_buffer_requirements bufreq;
        int ret;

        if (!inst->num_input_bufs || !inst->num_output_bufs)
                return -EINVAL;

        ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT, &bufreq);
        if (ret)
                return ret;

        if (inst->num_output_bufs < bufreq.count_actual ||
            inst->num_output_bufs < hfi_bufreq_get_count_min(&bufreq, ver))
                return -EINVAL;

        ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
        if (ret)
                return ret;

        if (inst->num_input_bufs < bufreq.count_actual ||
            inst->num_input_bufs < hfi_bufreq_get_count_min(&bufreq, ver))
                return -EINVAL;

        return 0;
}

static int venc_start_streaming(struct vb2_queue *q, unsigned int count)
{
        struct venus_inst *inst = vb2_get_drv_priv(q);
        int ret;

        mutex_lock(&inst->lock);

        if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                inst->streamon_out = 1;
        else
                inst->streamon_cap = 1;

        if (!(inst->streamon_out & inst->streamon_cap)) {
                mutex_unlock(&inst->lock);
                return 0;
        }

        venus_helper_init_instance(inst);

        inst->sequence_cap = 0;
        inst->sequence_out = 0;

        ret = venc_pm_get(inst);
        if (ret)
                goto error;

        ret = venus_pm_acquire_core(inst);
        if (ret)
                goto put_power;

        ret = venc_pm_put(inst, true);
        if (ret)
                goto error;

        ret = venc_set_properties(inst);
        if (ret)
                goto error;

        ret = venc_verify_conf(inst);
        if (ret)
                goto error;

        ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
                                        inst->num_output_bufs, 0);
        if (ret)
                goto error;

        ret = venus_helper_vb2_start_streaming(inst);
        if (ret)
                goto error;

        inst->enc_state = VENUS_ENC_STATE_ENCODING;

        mutex_unlock(&inst->lock);

        return 0;

put_power:
        venc_pm_put(inst, false);
error:
        venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_QUEUED);
        if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                inst->streamon_out = 0;
        else
                inst->streamon_cap = 0;
        mutex_unlock(&inst->lock);
        return ret;
}

static void venc_vb2_buf_queue(struct vb2_buffer *vb)
{
        struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);

        venc_pm_get_put(inst);

        mutex_lock(&inst->lock);

        if (inst->enc_state == VENUS_ENC_STATE_STOPPED) {
                vbuf->sequence = inst->sequence_cap++;
                vbuf->field = V4L2_FIELD_NONE;
                vb2_set_plane_payload(vb, 0, 0);
                v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
                mutex_unlock(&inst->lock);
                return;
        }

        venus_helper_vb2_buf_queue(vb);
        mutex_unlock(&inst->lock);
}

static const struct vb2_ops venc_vb2_ops = {
        .queue_setup = venc_queue_setup,
        .buf_init = venc_buf_init,
        .buf_cleanup = venc_buf_cleanup,
        .buf_prepare = venus_helper_vb2_buf_prepare,
        .start_streaming = venc_start_streaming,
        .stop_streaming = venus_helper_vb2_stop_streaming,
        .buf_queue = venc_vb2_buf_queue,
};

static void venc_buf_done(struct venus_inst *inst, unsigned int buf_type,
                          u32 tag, u32 bytesused, u32 data_offset, u32 flags,
                          u32 hfi_flags, u64 timestamp_us)
{
        struct vb2_v4l2_buffer *vbuf;
        struct vb2_buffer *vb;
        unsigned int type;

        venc_pm_touch(inst);

        if (buf_type == HFI_BUFFER_INPUT)
                type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
        else
                type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;

        vbuf = venus_helper_find_buf(inst, type, tag);
        if (!vbuf)
                return;

        vbuf->flags = flags;

        if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
                vb = &vbuf->vb2_buf;
                vb2_set_plane_payload(vb, 0, bytesused + data_offset);
                vb->planes[0].data_offset = data_offset;
                vb->timestamp = timestamp_us * NSEC_PER_USEC;
                vbuf->sequence = inst->sequence_cap++;
                if ((vbuf->flags & V4L2_BUF_FLAG_LAST) &&
                    inst->enc_state == VENUS_ENC_STATE_DRAIN) {
                        inst->enc_state = VENUS_ENC_STATE_STOPPED;
                }
        } else {
                vbuf->sequence = inst->sequence_out++;
        }

        v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
}

static void venc_event_notify(struct venus_inst *inst, u32 event,
                              struct hfi_event_data *data)
{
        struct device *dev = inst->core->dev_enc;

        venc_pm_touch(inst);

        if (event == EVT_SESSION_ERROR) {
                inst->session_error = true;
                venus_helper_vb2_queue_error(inst);
                dev_err(dev, "enc: event session error %x\n", inst->error);
        }
}

static const struct hfi_inst_ops venc_hfi_ops = {
        .buf_done = venc_buf_done,
        .event_notify = venc_event_notify,
};

static const struct v4l2_m2m_ops venc_m2m_ops = {
        .device_run = venus_helper_m2m_device_run,
        .job_abort = venus_helper_m2m_job_abort,
};

static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
                          struct vb2_queue *dst_vq)
{
        struct venus_inst *inst = priv;
        int ret;

        src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
        src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
        src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
        src_vq->ops = &venc_vb2_ops;
        src_vq->mem_ops = &vb2_dma_contig_memops;
        src_vq->drv_priv = inst;
        src_vq->buf_struct_size = sizeof(struct venus_buffer);
        src_vq->allow_zero_bytesused = 1;
        src_vq->min_queued_buffers = 1;
        src_vq->dev = inst->core->dev;
        src_vq->lock = &inst->ctx_q_lock;
        if (inst->core->res->hfi_version == HFI_VERSION_1XX)
                src_vq->bidirectional = 1;
        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->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
        dst_vq->ops = &venc_vb2_ops;
        dst_vq->mem_ops = &vb2_dma_contig_memops;
        dst_vq->drv_priv = inst;
        dst_vq->buf_struct_size = sizeof(struct venus_buffer);
        dst_vq->allow_zero_bytesused = 1;
        dst_vq->min_queued_buffers = 1;
        dst_vq->dev = inst->core->dev;
        dst_vq->lock = &inst->ctx_q_lock;
        return vb2_queue_init(dst_vq);
}

static void venc_inst_init(struct venus_inst *inst)
{
        inst->fmt_cap = &venc_formats[VENUS_FMT_H264];
        inst->fmt_out = &venc_formats[VENUS_FMT_NV12];
        inst->width = 1280;
        inst->height = ALIGN(720, 32);
        inst->out_width = 1280;
        inst->out_height = 720;
        inst->fps = 15;
        inst->timeperframe.numerator = 1;
        inst->timeperframe.denominator = 15;
        inst->hfi_codec = HFI_VIDEO_CODEC_H264;
}

static int venc_open(struct file *file)
{
        struct venus_core *core = video_drvdata(file);
        struct venus_inst *inst;
        int ret;

        inst = kzalloc_obj(*inst);
        if (!inst)
                return -ENOMEM;

        INIT_LIST_HEAD(&inst->dpbbufs);
        INIT_LIST_HEAD(&inst->registeredbufs);
        INIT_LIST_HEAD(&inst->internalbufs);
        INIT_LIST_HEAD(&inst->list);
        mutex_init(&inst->lock);
        mutex_init(&inst->ctx_q_lock);

        inst->core = core;
        inst->session_type = VIDC_SESSION_TYPE_ENC;
        inst->clk_data.core_id = VIDC_CORE_ID_DEFAULT;
        inst->core_acquired = false;
        inst->nonblock = file->f_flags & O_NONBLOCK;

        if (inst->enc_state == VENUS_ENC_STATE_DEINIT)
                inst->enc_state = VENUS_ENC_STATE_INIT;

        venus_helper_init_instance(inst);

        ret = venc_ctrl_init(inst);
        if (ret)
                goto err_free;

        venc_inst_init(inst);

        /*
         * create m2m device for every instance, the m2m context scheduling
         * is made by firmware side so we do not need to care about.
         */
        inst->m2m_dev = v4l2_m2m_init(&venc_m2m_ops);
        if (IS_ERR(inst->m2m_dev)) {
                ret = PTR_ERR(inst->m2m_dev);
                goto err_ctrl_deinit;
        }

        inst->m2m_ctx = v4l2_m2m_ctx_init(inst->m2m_dev, inst, m2m_queue_init);
        if (IS_ERR(inst->m2m_ctx)) {
                ret = PTR_ERR(inst->m2m_ctx);
                goto err_m2m_dev_release;
        }

        ret = hfi_session_create(inst, &venc_hfi_ops);
        if (ret)
                goto err_m2m_ctx_release;

        v4l2_fh_init(&inst->fh, core->vdev_enc);

        inst->fh.ctrl_handler = &inst->ctrl_handler;
        v4l2_fh_add(&inst->fh, file);
        inst->fh.m2m_ctx = inst->m2m_ctx;

        return 0;

err_m2m_ctx_release:
        v4l2_m2m_ctx_release(inst->m2m_ctx);
err_m2m_dev_release:
        v4l2_m2m_release(inst->m2m_dev);
err_ctrl_deinit:
        v4l2_ctrl_handler_free(&inst->ctrl_handler);
err_free:
        kfree(inst);
        return ret;
}

static int venc_close(struct file *file)
{
        struct venus_inst *inst = to_inst(file);

        venc_pm_get(inst);
        venus_close_common(inst, file);
        inst->enc_state = VENUS_ENC_STATE_DEINIT;
        venc_pm_put(inst, false);

        kfree(inst);
        return 0;
}

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

static int venc_probe(struct platform_device *pdev)
{
        struct device *dev = &pdev->dev;
        struct video_device *vdev;
        struct venus_core *core;
        int ret;

        core = dev_get_drvdata(dev->parent);
        if (!core)
                return -EINVAL;

        platform_set_drvdata(pdev, core);

        if (core->pm_ops->venc_get) {
                ret = core->pm_ops->venc_get(dev);
                if (ret)
                        return ret;
        }

        vdev = video_device_alloc();
        if (!vdev)
                return -ENOMEM;

        strscpy(vdev->name, "qcom-venus-encoder", sizeof(vdev->name));
        vdev->release = video_device_release;
        vdev->fops = &venc_fops;
        vdev->ioctl_ops = &venc_ioctl_ops;
        vdev->vfl_dir = VFL_DIR_M2M;
        vdev->v4l2_dev = &core->v4l2_dev;
        vdev->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;

        ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
        if (ret)
                goto err_vdev_release;

        core->vdev_enc = vdev;
        core->dev_enc = dev;

        video_set_drvdata(vdev, core);
        pm_runtime_set_autosuspend_delay(dev, 2000);
        pm_runtime_use_autosuspend(dev);
        pm_runtime_enable(dev);

        return 0;

err_vdev_release:
        video_device_release(vdev);
        return ret;
}

static void venc_remove(struct platform_device *pdev)
{
        struct venus_core *core = dev_get_drvdata(pdev->dev.parent);

        video_unregister_device(core->vdev_enc);
        pm_runtime_disable(core->dev_enc);

        if (core->pm_ops->venc_put)
                core->pm_ops->venc_put(core->dev_enc);
}

static __maybe_unused int venc_runtime_suspend(struct device *dev)
{
        struct venus_core *core = dev_get_drvdata(dev);
        const struct venus_pm_ops *pm_ops = core->pm_ops;
        int ret = 0;

        if (pm_ops->venc_power)
                ret = pm_ops->venc_power(dev, POWER_OFF);

        return ret;
}

static __maybe_unused int venc_runtime_resume(struct device *dev)
{
        struct venus_core *core = dev_get_drvdata(dev);
        const struct venus_pm_ops *pm_ops = core->pm_ops;
        int ret = 0;

        if (pm_ops->venc_power)
                ret = pm_ops->venc_power(dev, POWER_ON);

        return ret;
}

static const struct dev_pm_ops venc_pm_ops = {
        SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
                                pm_runtime_force_resume)
        SET_RUNTIME_PM_OPS(venc_runtime_suspend, venc_runtime_resume, NULL)
};

static const struct of_device_id venc_dt_match[] = {
        { .compatible = "venus-encoder" },
        { }
};
MODULE_DEVICE_TABLE(of, venc_dt_match);

static struct platform_driver qcom_venus_enc_driver = {
        .probe = venc_probe,
        .remove = venc_remove,
        .driver = {
                .name = "qcom-venus-encoder",
                .of_match_table = venc_dt_match,
                .pm = &venc_pm_ops,
        },
};
module_platform_driver(qcom_venus_enc_driver);

MODULE_DESCRIPTION("Qualcomm Venus video encoder driver");
MODULE_LICENSE("GPL v2");