[media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver

Add v4l2 layer decoder driver for MT8173

[mchehab@s-opensource.com: make checkpatch.pl happy]

Signed-off-by: Tiffany Lin <tiffany.lin@mediatek.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 1432 insertions, 0 deletions

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
new file mode 100644
index 000000000000..7f7464a570cb
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -0,0 +1,1432 @@
+/*
+ * Copyright (c) 2016 MediaTek Inc.
+ * Author: PC Chen <pc.chen@mediatek.com>
+ *         Tiffany Lin <tiffany.lin@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <media/v4l2-event.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "mtk_vcodec_drv.h"
+#include "mtk_vcodec_dec.h"
+#include "mtk_vcodec_intr.h"
+#include "mtk_vcodec_util.h"
+#include "vdec_drv_if.h"
+#include "mtk_vcodec_dec_pm.h"
+
+#define OUT_FMT_IDX	0
+#define CAP_FMT_IDX	0
+
+#define MTK_VDEC_MIN_W	64U
+#define MTK_VDEC_MIN_H	64U
+#define DFT_CFG_WIDTH	MTK_VDEC_MIN_W
+#define DFT_CFG_HEIGHT	MTK_VDEC_MIN_H
+
+static struct mtk_video_fmt mtk_video_formats[] = {
+	{
+		.fourcc = V4L2_PIX_FMT_H264,
+		.type = MTK_FMT_DEC,
+		.num_planes = 1,
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_VP8,
+		.type = MTK_FMT_DEC,
+		.num_planes = 1,
+	},
+};
+
+static const struct mtk_codec_framesizes mtk_vdec_framesizes[] = {
+	{
+		.fourcc	= V4L2_PIX_FMT_H264,
+		.stepwise = {  MTK_VDEC_MIN_W, MTK_VDEC_MAX_W, 16,
+				MTK_VDEC_MIN_H, MTK_VDEC_MAX_H, 16 },
+	},
+	{
+		.fourcc	= V4L2_PIX_FMT_VP8,
+		.stepwise = {  MTK_VDEC_MIN_W, MTK_VDEC_MAX_W, 16,
+				MTK_VDEC_MIN_H, MTK_VDEC_MAX_H, 16 },
+	},
+};
+
+#define NUM_SUPPORTED_FRAMESIZE ARRAY_SIZE(mtk_vdec_framesizes)
+#define NUM_FORMATS ARRAY_SIZE(mtk_video_formats)
+
+static struct mtk_video_fmt *mtk_vdec_find_format(struct v4l2_format *f)
+{
+	struct mtk_video_fmt *fmt;
+	unsigned int k;
+
+	for (k = 0; k < NUM_FORMATS; k++) {
+		fmt = &mtk_video_formats[k];
+		if (fmt->fourcc == f->fmt.pix_mp.pixelformat)
+			return fmt;
+	}
+
+	return NULL;
+}
+
+static struct mtk_q_data *mtk_vdec_get_q_data(struct mtk_vcodec_ctx *ctx,
+					      enum v4l2_buf_type type)
+{
+	if (V4L2_TYPE_IS_OUTPUT(type))
+		return &ctx->q_data[MTK_Q_DATA_SRC];
+
+	return &ctx->q_data[MTK_Q_DATA_DST];
+}
+
+/*
+ * This function tries to clean all display buffers, the buffers will return
+ * in display order.
+ * Note the buffers returned from codec driver may still be in driver's
+ * reference list.
+ */
+static struct vb2_buffer *get_display_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	struct vdec_fb *disp_frame_buffer = NULL;
+	struct mtk_video_dec_buf *dstbuf;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+	if (vdec_if_get_param(ctx,
+			GET_PARAM_DISP_FRAME_BUFFER,
+			&disp_frame_buffer)) {
+		mtk_v4l2_err("[%d]Cannot get param : GET_PARAM_DISP_FRAME_BUFFER",
+			ctx->id);
+		return NULL;
+	}
+
+	if (disp_frame_buffer == NULL) {
+		mtk_v4l2_debug(3, "No display frame buffer");
+		return NULL;
+	}
+
+	dstbuf = container_of(disp_frame_buffer, struct mtk_video_dec_buf,
+				frame_buffer);
+	mutex_lock(&ctx->lock);
+	if (dstbuf->used) {
+		vb2_set_plane_payload(&dstbuf->vb.vb2_buf, 0,
+					ctx->picinfo.y_bs_sz);
+		vb2_set_plane_payload(&dstbuf->vb.vb2_buf, 1,
+					ctx->picinfo.c_bs_sz);
+
+		dstbuf->ready_to_display = true;
+
+		mtk_v4l2_debug(2,
+				"[%d]status=%x queue id=%d to done_list %d",
+				ctx->id, disp_frame_buffer->status,
+				dstbuf->vb.vb2_buf.index,
+				dstbuf->queued_in_vb2);
+
+		v4l2_m2m_buf_done(&dstbuf->vb, VB2_BUF_STATE_DONE);
+		ctx->decoded_frame_cnt++;
+	}
+	mutex_unlock(&ctx->lock);
+	return &dstbuf->vb.vb2_buf;
+}
+
+/*
+ * This function tries to clean all capture buffers that are not used as
+ * reference buffers by codec driver any more
+ * In this case, we need re-queue buffer to vb2 buffer if user space
+ * already returns this buffer to v4l2 or this buffer is just the output of
+ * previous sps/pps/resolution change decode, or do nothing if user
+ * space still owns this buffer
+ */
+static struct vb2_buffer *get_free_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	struct mtk_video_dec_buf *dstbuf;
+	struct vdec_fb *free_frame_buffer = NULL;
+
+	if (vdec_if_get_param(ctx,
+				GET_PARAM_FREE_FRAME_BUFFER,
+				&free_frame_buffer)) {
+		mtk_v4l2_err("[%d] Error!! Cannot get param", ctx->id);
+		return NULL;
+	}
+	if (free_frame_buffer == NULL) {
+		mtk_v4l2_debug(3, " No free frame buffer");
+		return NULL;
+	}
+
+	mtk_v4l2_debug(3, "[%d] tmp_frame_addr = 0x%p",
+			ctx->id, free_frame_buffer);
+
+	dstbuf = container_of(free_frame_buffer, struct mtk_video_dec_buf,
+				frame_buffer);
+
+	mutex_lock(&ctx->lock);
+	if (dstbuf->used) {
+		if ((dstbuf->queued_in_vb2) &&
+		    (dstbuf->queued_in_v4l2) &&
+		    (free_frame_buffer->status == FB_ST_FREE)) {
+			/*
+			 * After decode sps/pps or non-display buffer, we don't
+			 * need to return capture buffer to user space, but
+			 * just re-queue this capture buffer to vb2 queue.
+			 * This reduce overheads that dq/q unused capture
+			 * buffer. In this case, queued_in_vb2 = true.
+			 */
+			mtk_v4l2_debug(2,
+				"[%d]status=%x queue id=%d to rdy_queue %d",
+				ctx->id, free_frame_buffer->status,
+				dstbuf->vb.vb2_buf.index,
+				dstbuf->queued_in_vb2);
+			v4l2_m2m_buf_queue(ctx->m2m_ctx, &dstbuf->vb);
+		} else if ((dstbuf->queued_in_vb2 == false) &&
+			   (dstbuf->queued_in_v4l2 == true)) {
+			/*
+			 * If buffer in v4l2 driver but not in vb2 queue yet,
+			 * and we get this buffer from free_list, it means
+			 * that codec driver do not use this buffer as
+			 * reference buffer anymore. We should q buffer to vb2
+			 * queue, so later work thread could get this buffer
+			 * for decode. In this case, queued_in_vb2 = false
+			 * means this buffer is not from previous decode
+			 * output.
+			 */
+			mtk_v4l2_debug(2,
+					"[%d]status=%x queue id=%d to rdy_queue",
+					ctx->id, free_frame_buffer->status,
+					dstbuf->vb.vb2_buf.index);
+			v4l2_m2m_buf_queue(ctx->m2m_ctx, &dstbuf->vb);
+			dstbuf->queued_in_vb2 = true;
+		} else {
+			/*
+			 * Codec driver do not need to reference this capture
+			 * buffer and this buffer is not in v4l2 driver.
+			 * Then we don't need to do any thing, just add log when
+			 * we need to debug buffer flow.
+			 * When this buffer q from user space, it could
+			 * directly q to vb2 buffer
+			 */
+			mtk_v4l2_debug(3, "[%d]status=%x err queue id=%d %d %d",
+					ctx->id, free_frame_buffer->status,
+					dstbuf->vb.vb2_buf.index,
+					dstbuf->queued_in_vb2,
+					dstbuf->queued_in_v4l2);
+		}
+		dstbuf->used = false;
+	}
+	mutex_unlock(&ctx->lock);
+	return &dstbuf->vb.vb2_buf;
+}
+
+static void clean_display_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	struct vb2_buffer *framptr;
+
+	do {
+		framptr = get_display_buffer(ctx);
+	} while (framptr);
+}
+
+static void clean_free_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	struct vb2_buffer *framptr;
+
+	do {
+		framptr = get_free_buffer(ctx);
+	} while (framptr);
+}
+
+static void mtk_vdec_queue_res_chg_event(struct mtk_vcodec_ctx *ctx)
+{
+	static const struct v4l2_event ev_src_ch = {
+		.type = V4L2_EVENT_SOURCE_CHANGE,
+		.u.src_change.changes =
+		V4L2_EVENT_SRC_CH_RESOLUTION,
+	};
+
+	mtk_v4l2_debug(1, "[%d]", ctx->id);
+	v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);
+}
+
+static void mtk_vdec_flush_decoder(struct mtk_vcodec_ctx *ctx)
+{
+	bool res_chg;
+	int ret = 0;
+
+	ret = vdec_if_decode(ctx, NULL, NULL, &res_chg);
+	if (ret)
+		mtk_v4l2_err("DecodeFinal failed, ret=%d", ret);
+
+	clean_display_buffer(ctx);
+	clean_free_buffer(ctx);
+}
+
+static void mtk_vdec_pic_info_update(struct mtk_vcodec_ctx *ctx)
+{
+	unsigned int dpbsize = 0;
+	int ret;
+
+	if (vdec_if_get_param(ctx,
+				GET_PARAM_PIC_INFO,
+				&ctx->last_decoded_picinfo)) {
+		mtk_v4l2_err("[%d]Error!! Cannot get param : GET_PARAM_PICTURE_INFO ERR",
+				ctx->id);
+		return;
+	}
+
+	if (ctx->last_decoded_picinfo.pic_w == 0 ||
+		ctx->last_decoded_picinfo.pic_h == 0 ||
+		ctx->last_decoded_picinfo.buf_w == 0 ||
+		ctx->last_decoded_picinfo.buf_h == 0) {
+		mtk_v4l2_err("Cannot get correct pic info");
+		return;
+	}
+
+	if ((ctx->last_decoded_picinfo.pic_w == ctx->picinfo.pic_w) ||
+	    (ctx->last_decoded_picinfo.pic_h == ctx->picinfo.pic_h))
+		return;
+
+	mtk_v4l2_debug(1,
+			"[%d]-> new(%d,%d), old(%d,%d), real(%d,%d)",
+			ctx->id, ctx->last_decoded_picinfo.pic_w,
+			ctx->last_decoded_picinfo.pic_h,
+			ctx->picinfo.pic_w, ctx->picinfo.pic_h,
+			ctx->last_decoded_picinfo.buf_w,
+			ctx->last_decoded_picinfo.buf_h);
+
+	ret = vdec_if_get_param(ctx, GET_PARAM_DPB_SIZE, &dpbsize);
+	if (dpbsize == 0)
+		mtk_v4l2_err("Incorrect dpb size, ret=%d", ret);
+
+	ctx->dpb_size = dpbsize;
+}
+
+static void mtk_vdec_worker(struct work_struct *work)
+{
+	struct mtk_vcodec_ctx *ctx = container_of(work, struct mtk_vcodec_ctx,
+				decode_work);
+	struct mtk_vcodec_dev *dev = ctx->dev;
+	struct vb2_buffer *src_buf, *dst_buf;
+	struct mtk_vcodec_mem buf;
+	struct vdec_fb *pfb;
+	bool res_chg = false;
+	int ret;
+	struct mtk_video_dec_buf *dst_buf_info, *src_buf_info;
+	struct vb2_v4l2_buffer *dst_vb2_v4l2, *src_vb2_v4l2;
+
+	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+	if (src_buf == NULL) {
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		mtk_v4l2_debug(1, "[%d] src_buf empty!!", ctx->id);
+		return;
+	}
+
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+	if (dst_buf == NULL) {
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		mtk_v4l2_debug(1, "[%d] dst_buf empty!!", ctx->id);
+		return;
+	}
+
+	src_vb2_v4l2 = container_of(src_buf, struct vb2_v4l2_buffer, vb2_buf);
+	src_buf_info = container_of(src_vb2_v4l2, struct mtk_video_dec_buf, vb);
+
+	dst_vb2_v4l2 = container_of(dst_buf, struct vb2_v4l2_buffer, vb2_buf);
+	dst_buf_info = container_of(dst_vb2_v4l2, struct mtk_video_dec_buf, vb);
+
+	buf.va = vb2_plane_vaddr(src_buf, 0);
+	buf.dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+	buf.size = (size_t)src_buf->planes[0].bytesused;
+	if (!buf.va) {
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		mtk_v4l2_err("[%d] id=%d src_addr is NULL!!",
+				ctx->id, src_buf->index);
+		return;
+	}
+
+	pfb = &dst_buf_info->frame_buffer;
+	pfb->base_y.va = vb2_plane_vaddr(dst_buf, 0);
+	pfb->base_y.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+	pfb->base_y.size = ctx->picinfo.y_bs_sz + ctx->picinfo.y_len_sz;
+
+	pfb->base_c.va = vb2_plane_vaddr(dst_buf, 1);
+	pfb->base_c.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 1);
+	pfb->base_c.size = ctx->picinfo.c_bs_sz + ctx->picinfo.c_len_sz;
+	pfb->status = 0;
+	mtk_v4l2_debug(3, "===>[%d] vdec_if_decode() ===>", ctx->id);
+	mtk_v4l2_debug(3, "[%d] Bitstream VA=%p DMA=%pad Size=%zx vb=%p",
+			ctx->id, buf.va, &buf.dma_addr, buf.size, src_buf);
+
+	mtk_v4l2_debug(3,
+			"id=%d Framebuf  pfb=%p VA=%p Y_DMA=%pad C_DMA=%pad Size=%zx",
+			dst_buf->index, pfb,
+			pfb->base_y.va, &pfb->base_y.dma_addr,
+			&pfb->base_c.dma_addr, pfb->base_y.size);
+
+	if (src_buf_info->lastframe) {
+		/* update src buf status */
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		src_buf_info->lastframe = false;
+		v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_DONE);
+
+		/* update dst buf status */
+		dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
+		dst_buf_info->used = false;
+
+		vdec_if_decode(ctx, NULL, NULL, &res_chg);
+		clean_display_buffer(ctx);
+		vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 0, 0);
+		vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 1, 0);
+		v4l2_m2m_buf_done(&dst_buf_info->vb, VB2_BUF_STATE_DONE);
+		clean_free_buffer(ctx);
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		return;
+	}
+	dst_buf_info->vb.vb2_buf.timestamp
+			= src_buf_info->vb.vb2_buf.timestamp;
+	dst_buf_info->vb.timecode
+			= src_buf_info->vb.timecode;
+	mutex_lock(&ctx->lock);
+	dst_buf_info->used = true;
+	mutex_unlock(&ctx->lock);
+	src_buf_info->used = true;
+
+	ret = vdec_if_decode(ctx, &buf, pfb, &res_chg);
+
+	if (ret) {
+		mtk_v4l2_err(
+			" <===[%d], src_buf[%d]%d sz=0x%zx pts=%llu dst_buf[%d] vdec_if_decode() ret=%d res_chg=%d===>",
+			ctx->id,
+			src_buf->index,
+			src_buf_info->lastframe,
+			buf.size,
+			src_buf_info->vb.vb2_buf.timestamp,
+			dst_buf->index,
+			ret, res_chg);
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_ERROR);
+	} else if (res_chg == false) {
+		/*
+		 * we only return src buffer with VB2_BUF_STATE_DONE
+		 * when decode success without resolution change
+		 */
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_DONE);
+	}
+
+	dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
+	clean_display_buffer(ctx);
+	clean_free_buffer(ctx);
+
+	if (!ret && res_chg) {
+		mtk_vdec_pic_info_update(ctx);
+		/*
+		 * On encountering a resolution change in the stream.
+		 * The driver must first process and decode all
+		 * remaining buffers from before the resolution change
+		 * point, so call flush decode here
+		 */
+		mtk_vdec_flush_decoder(ctx);
+		/*
+		 * After all buffers containing decoded frames from
+		 * before the resolution change point ready to be
+		 * dequeued on the CAPTURE queue, the driver sends a
+		 * V4L2_EVENT_SOURCE_CHANGE event for source change
+		 * type V4L2_EVENT_SRC_CH_RESOLUTION
+		 */
+		mtk_vdec_queue_res_chg_event(ctx);
+	}
+	v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+}
+
+void mtk_vdec_unlock(struct mtk_vcodec_ctx *ctx)
+{
+	mutex_unlock(&ctx->dev->dec_mutex);
+}
+
+void mtk_vdec_lock(struct mtk_vcodec_ctx *ctx)
+{
+	mutex_lock(&ctx->dev->dec_mutex);
+}
+
+void mtk_vcodec_dec_release(struct mtk_vcodec_ctx *ctx)
+{
+	vdec_if_deinit(ctx);
+	ctx->state = MTK_STATE_FREE;
+}
+
+void mtk_vcodec_dec_set_default_params(struct mtk_vcodec_ctx *ctx)
+{
+	struct mtk_q_data *q_data;
+
+	ctx->m2m_ctx->q_lock = &ctx->dev->dev_mutex;
+	ctx->fh.m2m_ctx = ctx->m2m_ctx;
+	ctx->fh.ctrl_handler = &ctx->ctrl_hdl;
+	INIT_WORK(&ctx->decode_work, mtk_vdec_worker);
+	ctx->colorspace = V4L2_COLORSPACE_REC709;
+	ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+	ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
+	ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+
+	q_data = &ctx->q_data[MTK_Q_DATA_SRC];
+	memset(q_data, 0, sizeof(struct mtk_q_data));
+	q_data->visible_width = DFT_CFG_WIDTH;
+	q_data->visible_height = DFT_CFG_HEIGHT;
+	q_data->fmt = &mtk_video_formats[OUT_FMT_IDX];
+	q_data->field = V4L2_FIELD_NONE;
+
+	q_data->sizeimage[0] = DFT_CFG_WIDTH * DFT_CFG_HEIGHT;
+	q_data->bytesperline[0] = 0;
+
+	q_data = &ctx->q_data[MTK_Q_DATA_DST];
+	memset(q_data, 0, sizeof(struct mtk_q_data));
+	q_data->visible_width = DFT_CFG_WIDTH;
+	q_data->visible_height = DFT_CFG_HEIGHT;
+	q_data->coded_width = DFT_CFG_WIDTH;
+	q_data->coded_height = DFT_CFG_HEIGHT;
+	q_data->fmt = &mtk_video_formats[CAP_FMT_IDX];
+	q_data->field = V4L2_FIELD_NONE;
+
+	v4l_bound_align_image(&q_data->coded_width,
+				MTK_VDEC_MIN_W,
+				MTK_VDEC_MAX_W, 4,
+				&q_data->coded_height,
+				MTK_VDEC_MIN_H,
+				MTK_VDEC_MAX_H, 5, 6);
+
+	q_data->sizeimage[0] = q_data->coded_width * q_data->coded_height;
+	q_data->bytesperline[0] = q_data->coded_width;
+	q_data->sizeimage[1] = q_data->sizeimage[0] / 2;
+	q_data->bytesperline[1] = q_data->coded_width;
+}
+
+static int vidioc_vdec_qbuf(struct file *file, void *priv,
+			    struct v4l2_buffer *buf)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+	struct vb2_queue *vq;
+	struct vb2_buffer *vb;
+	struct mtk_video_dec_buf *mtkbuf;
+	struct vb2_v4l2_buffer	*vb2_v4l2;
+
+	if (ctx->state == MTK_STATE_ABORT) {
+		mtk_v4l2_err("[%d] Call on QBUF after unrecoverable error",
+				ctx->id);
+		return -EIO;
+	}
+
+	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, buf->type);
+	vb = vq->bufs[buf->index];
+	vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
+	mtkbuf = container_of(vb2_v4l2, struct mtk_video_dec_buf, vb);
+
+	if ((buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) &&
+	    (buf->m.planes[0].bytesused == 0)) {
+		mtkbuf->lastframe = true;
+		mtk_v4l2_debug(1, "[%d] (%d) id=%d lastframe=%d (%d,%d, %d) vb=%p",
+			 ctx->id, buf->type, buf->index,
+			 mtkbuf->lastframe, buf->bytesused,
+			 buf->m.planes[0].bytesused, buf->length,
+			 vb);
+	}
+
+	return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_vdec_dqbuf(struct file *file, void *priv,
+			     struct v4l2_buffer *buf)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+
+	if (ctx->state == MTK_STATE_ABORT) {
+		mtk_v4l2_err("[%d] Call on DQBUF after unrecoverable error",
+				ctx->id);
+		return -EIO;
+	}
+
+	return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_vdec_querycap(struct file *file, void *priv,
+				struct v4l2_capability *cap)
+{
+	strlcpy(cap->driver, MTK_VCODEC_DEC_NAME, sizeof(cap->driver));
+	strlcpy(cap->bus_info, MTK_PLATFORM_STR, sizeof(cap->bus_info));
+	strlcpy(cap->card, MTK_PLATFORM_STR, sizeof(cap->card));
+
+	return 0;
+}
+
+static int vidioc_vdec_subscribe_evt(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_SOURCE_CHANGE:
+		return v4l2_src_change_event_subscribe(fh, sub);
+	default:
+		return v4l2_ctrl_subscribe_event(fh, sub);
+	}
+}
+
+static int vidioc_try_fmt(struct v4l2_format *f, struct mtk_video_fmt *fmt)
+{
+	struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
+	int i;
+
+	pix_fmt_mp->field = V4L2_FIELD_NONE;
+
+	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		pix_fmt_mp->num_planes = 1;
+		pix_fmt_mp->plane_fmt[0].bytesperline = 0;
+	} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+		int tmp_w, tmp_h;
+
+		pix_fmt_mp->height = clamp(pix_fmt_mp->height,
+					MTK_VDEC_MIN_H,
+					MTK_VDEC_MAX_H);
+		pix_fmt_mp->width = clamp(pix_fmt_mp->width,
+					MTK_VDEC_MIN_W,
+					MTK_VDEC_MAX_W);
+
+		/*
+		 * Find next closer width align 64, heign align 64, size align
+		 * 64 rectangle
+		 * Note: This only get default value, the real HW needed value
+		 *       only available when ctx in MTK_STATE_HEADER state
+		 */
+		tmp_w = pix_fmt_mp->width;
+		tmp_h = pix_fmt_mp->height;
+		v4l_bound_align_image(&pix_fmt_mp->width,
+					MTK_VDEC_MIN_W,
+					MTK_VDEC_MAX_W, 6,
+					&pix_fmt_mp->height,
+					MTK_VDEC_MIN_H,
+					MTK_VDEC_MAX_H, 6, 9);
+
+		if (pix_fmt_mp->width < tmp_w &&
+			(pix_fmt_mp->width + 64) <= MTK_VDEC_MAX_W)
+			pix_fmt_mp->width += 64;
+		if (pix_fmt_mp->height < tmp_h &&
+			(pix_fmt_mp->height + 64) <= MTK_VDEC_MAX_H)
+			pix_fmt_mp->height += 64;
+
+		mtk_v4l2_debug(0,
+			"before resize width=%d, height=%d, after resize width=%d, height=%d, sizeimage=%d",
+			tmp_w, tmp_h, pix_fmt_mp->width,
+			pix_fmt_mp->height,
+			pix_fmt_mp->width * pix_fmt_mp->height);
+
+		pix_fmt_mp->num_planes = fmt->num_planes;
+		pix_fmt_mp->plane_fmt[0].sizeimage =
+				pix_fmt_mp->width * pix_fmt_mp->height;
+		pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;
+
+		if (pix_fmt_mp->num_planes == 2) {
+			pix_fmt_mp->plane_fmt[1].sizeimage =
+				(pix_fmt_mp->width * pix_fmt_mp->height) / 2;
+			pix_fmt_mp->plane_fmt[1].bytesperline =
+				pix_fmt_mp->width;
+		}
+	}
+
+	for (i = 0; i < pix_fmt_mp->num_planes; i++)
+		memset(&(pix_fmt_mp->plane_fmt[i].reserved[0]), 0x0,
+			   sizeof(pix_fmt_mp->plane_fmt[0].reserved));
+
+	pix_fmt_mp->flags = 0;
+	memset(&pix_fmt_mp->reserved, 0x0, sizeof(pix_fmt_mp->reserved));
+	return 0;
+}
+
+static int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct mtk_video_fmt *fmt;
+
+	fmt = mtk_vdec_find_format(f);
+	if (!fmt) {
+		f->fmt.pix.pixelformat = mtk_video_formats[CAP_FMT_IDX].fourcc;
+		fmt = mtk_vdec_find_format(f);
+	}
+
+	return vidioc_try_fmt(f, fmt);
+}
+
+static int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
+	struct mtk_video_fmt *fmt;
+
+	fmt = mtk_vdec_find_format(f);
+	if (!fmt) {
+		f->fmt.pix.pixelformat = mtk_video_formats[OUT_FMT_IDX].fourcc;
+		fmt = mtk_vdec_find_format(f);
+	}
+
+	if (pix_fmt_mp->plane_fmt[0].sizeimage == 0) {
+		mtk_v4l2_err("sizeimage of output format must be given");
+		return -EINVAL;
+	}
+
+	return vidioc_try_fmt(f, fmt);
+}
+
+static int vidioc_vdec_g_selection(struct file *file, void *priv,
+			struct v4l2_selection *s)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+	struct mtk_q_data *q_data;
+
+	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	q_data = &ctx->q_data[MTK_Q_DATA_DST];
+
+	switch (s->target) {
+	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+		s->r.left = 0;
+		s->r.top = 0;
+		s->r.width = ctx->picinfo.pic_w;
+		s->r.height = ctx->picinfo.pic_h;
+		break;
+	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+		s->r.left = 0;
+		s->r.top = 0;
+		s->r.width = ctx->picinfo.buf_w;
+		s->r.height = ctx->picinfo.buf_h;
+		break;
+	case V4L2_SEL_TGT_COMPOSE:
+		if (vdec_if_get_param(ctx, GET_PARAM_CROP_INFO, &(s->r))) {
+			/* set to default value if header info not ready yet*/
+			s->r.left = 0;
+			s->r.top = 0;
+			s->r.width = q_data->visible_width;
+			s->r.height = q_data->visible_height;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (ctx->state < MTK_STATE_HEADER) {
+		/* set to default value if header info not ready yet*/
+		s->r.left = 0;
+		s->r.top = 0;
+		s->r.width = q_data->visible_width;
+		s->r.height = q_data->visible_height;
+		return 0;
+	}
+
+	return 0;
+}
+
+static int vidioc_vdec_s_selection(struct file *file, void *priv,
+				struct v4l2_selection *s)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+
+	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	switch (s->target) {
+	case V4L2_SEL_TGT_COMPOSE:
+		s->r.left = 0;
+		s->r.top = 0;
+		s->r.width = ctx->picinfo.pic_w;
+		s->r.height = ctx->picinfo.pic_h;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int vidioc_vdec_s_fmt(struct file *file, void *priv,
+			     struct v4l2_format *f)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+	struct v4l2_pix_format_mplane *pix_mp;
+	struct mtk_q_data *q_data;
+	int ret = 0;
+	struct mtk_video_fmt *fmt;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+
+	q_data = mtk_vdec_get_q_data(ctx, f->type);
+	if (!q_data)
+		return -EINVAL;
+
+	pix_mp = &f->fmt.pix_mp;
+	if ((f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) &&
+	    vb2_is_busy(&ctx->m2m_ctx->out_q_ctx.q)) {
+		mtk_v4l2_err("out_q_ctx buffers already requested");
+		ret = -EBUSY;
+	}
+
+	if ((f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) &&
+	    vb2_is_busy(&ctx->m2m_ctx->cap_q_ctx.q)) {
+		mtk_v4l2_err("cap_q_ctx buffers already requested");
+		ret = -EBUSY;
+	}
+
+	fmt = mtk_vdec_find_format(f);
+	if (fmt == NULL) {
+		if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+			f->fmt.pix.pixelformat =
+				mtk_video_formats[OUT_FMT_IDX].fourcc;
+			fmt = mtk_vdec_find_format(f);
+		} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+			f->fmt.pix.pixelformat =
+				mtk_video_formats[CAP_FMT_IDX].fourcc;
+			fmt = mtk_vdec_find_format(f);
+		}
+	}
+
+	q_data->fmt = fmt;
+	vidioc_try_fmt(f, q_data->fmt);
+	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		q_data->sizeimage[0] = pix_mp->plane_fmt[0].sizeimage;
+		q_data->coded_width = pix_mp->width;
+		q_data->coded_height = pix_mp->height;
+
+		ctx->colorspace = f->fmt.pix_mp.colorspace;
+		ctx->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
+		ctx->quantization = f->fmt.pix_mp.quantization;
+		ctx->xfer_func = f->fmt.pix_mp.xfer_func;
+
+		if (ctx->state == MTK_STATE_FREE) {
+			ret = vdec_if_init(ctx, q_data->fmt->fourcc);
+			if (ret) {
+				mtk_v4l2_err("[%d]: vdec_if_init() fail ret=%d",
+					ctx->id, ret);
+				return -EINVAL;
+			}
+			ctx->state = MTK_STATE_INIT;
+		}
+	}
+
+	return 0;
+}
+
+static int vidioc_enum_framesizes(struct file *file, void *priv,
+				struct v4l2_frmsizeenum *fsize)
+{
+	int i = 0;
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+
+	if (fsize->index != 0)
+		return -EINVAL;
+
+	for (i = 0; i < NUM_SUPPORTED_FRAMESIZE; ++i) {
+		if (fsize->pixel_format != mtk_vdec_framesizes[i].fourcc)
+			continue;
+
+		fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+		fsize->stepwise = mtk_vdec_framesizes[i].stepwise;
+		if (!(ctx->dev->dec_capability &
+				VCODEC_CAPABILITY_4K_DISABLED)) {
+			mtk_v4l2_debug(3, "4K is enabled");
+			fsize->stepwise.max_width =
+					VCODEC_DEC_4K_CODED_WIDTH;
+			fsize->stepwise.max_height =
+					VCODEC_DEC_4K_CODED_HEIGHT;
+		}
+		mtk_v4l2_debug(1, "%x, %d %d %d %d %d %d",
+				ctx->dev->dec_capability,
+				fsize->stepwise.min_width,
+				fsize->stepwise.max_width,
+				fsize->stepwise.step_width,
+				fsize->stepwise.min_height,
+				fsize->stepwise.max_height,
+				fsize->stepwise.step_height);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int vidioc_enum_fmt(struct v4l2_fmtdesc *f, bool output_queue)
+{
+	struct mtk_video_fmt *fmt;
+	int i, j = 0;
+
+	for (i = 0; i < NUM_FORMATS; i++) {
+		if (output_queue && (mtk_video_formats[i].type != MTK_FMT_DEC))
+			continue;
+		if (!output_queue &&
+			(mtk_video_formats[i].type != MTK_FMT_FRAME))
+			continue;
+
+		if (j == f->index)
+			break;
+		++j;
+	}
+
+	if (i == NUM_FORMATS)
+		return -EINVAL;
+
+	fmt = &mtk_video_formats[i];
+	f->pixelformat = fmt->fourcc;
+
+	return 0;
+}
+
+static int vidioc_vdec_enum_fmt_vid_cap_mplane(struct file *file, void *pirv,
+					       struct v4l2_fmtdesc *f)
+{
+	return vidioc_enum_fmt(f, false);
+}
+
+static int vidioc_vdec_enum_fmt_vid_out_mplane(struct file *file, void *priv,
+					       struct v4l2_fmtdesc *f)
+{
+	return vidioc_enum_fmt(f, true);
+}
+
+static int vidioc_vdec_g_fmt(struct file *file, void *priv,
+			     struct v4l2_format *f)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+	struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+	struct vb2_queue *vq;
+	struct mtk_q_data *q_data;
+
+	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
+	if (!vq) {
+		mtk_v4l2_err("no vb2 queue for type=%d", f->type);
+		return -EINVAL;
+	}
+
+	q_data = mtk_vdec_get_q_data(ctx, f->type);
+
+	pix_mp->field = V4L2_FIELD_NONE;
+	pix_mp->colorspace = ctx->colorspace;
+	pix_mp->ycbcr_enc = ctx->ycbcr_enc;
+	pix_mp->quantization = ctx->quantization;
+	pix_mp->xfer_func = ctx->xfer_func;
+
+	if ((f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) &&
+	    (ctx->state >= MTK_STATE_HEADER)) {
+		/* Until STREAMOFF is called on the CAPTURE queue
+		 * (acknowledging the event), the driver operates as if
+		 * the resolution hasn't changed yet.
+		 * So we just return picinfo yet, and update picinfo in
+		 * stop_streaming hook function
+		 */
+		q_data->sizeimage[0] = ctx->picinfo.y_bs_sz +
+					ctx->picinfo.y_len_sz;
+		q_data->sizeimage[1] = ctx->picinfo.c_bs_sz +
+					ctx->picinfo.c_len_sz;
+		q_data->bytesperline[0] = ctx->last_decoded_picinfo.buf_w;
+		q_data->bytesperline[1] = ctx->last_decoded_picinfo.buf_w;
+		q_data->coded_width = ctx->picinfo.buf_w;
+		q_data->coded_height = ctx->picinfo.buf_h;
+
+		/*
+		 * Width and height are set to the dimensions
+		 * of the movie, the buffer is bigger and
+		 * further processing stages should crop to this
+		 * rectangle.
+		 */
+		pix_mp->width = q_data->coded_width;
+		pix_mp->height = q_data->coded_height;
+
+		/*
+		 * Set pixelformat to the format in which mt vcodec
+		 * outputs the decoded frame
+		 */
+		pix_mp->num_planes = q_data->fmt->num_planes;
+		pix_mp->pixelformat = q_data->fmt->fourcc;
+		pix_mp->plane_fmt[0].bytesperline = q_data->bytesperline[0];
+		pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage[0];
+		pix_mp->plane_fmt[1].bytesperline = q_data->bytesperline[1];
+		pix_mp->plane_fmt[1].sizeimage = q_data->sizeimage[1];
+
+	} else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		/*
+		 * This is run on OUTPUT
+		 * The buffer contains compressed image
+		 * so width and height have no meaning.
+		 * Assign value here to pass v4l2-compliance test
+		 */
+		pix_mp->width = q_data->visible_width;
+		pix_mp->height = q_data->visible_height;
+		pix_mp->plane_fmt[0].bytesperline = q_data->bytesperline[0];
+		pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage[0];
+		pix_mp->pixelformat = q_data->fmt->fourcc;
+		pix_mp->num_planes = q_data->fmt->num_planes;
+	} else {
+		pix_mp->width = q_data->coded_width;
+		pix_mp->height = q_data->coded_height;
+		pix_mp->num_planes = q_data->fmt->num_planes;
+		pix_mp->pixelformat = q_data->fmt->fourcc;
+		pix_mp->plane_fmt[0].bytesperline = q_data->bytesperline[0];
+		pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage[0];
+		pix_mp->plane_fmt[1].bytesperline = q_data->bytesperline[1];
+		pix_mp->plane_fmt[1].sizeimage = q_data->sizeimage[1];
+
+		mtk_v4l2_debug(1, "[%d] type=%d state=%d Format information could not be read, not ready yet!",
+				ctx->id, f->type, ctx->state);
+	}
+
+	return 0;
+}
+
+static int vb2ops_vdec_queue_setup(struct vb2_queue *vq,
+				unsigned int *nbuffers,
+				unsigned int *nplanes,
+				unsigned int sizes[],
+				struct device *alloc_devs[])
+{
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vq);
+	struct mtk_q_data *q_data;
+	unsigned int i;
+
+	q_data = mtk_vdec_get_q_data(ctx, vq->type);
+
+	if (q_data == NULL) {
+		mtk_v4l2_err("vq->type=%d err\n", vq->type);
+		return -EINVAL;
+	}
+
+	if (*nplanes) {
+		for (i = 0; i < *nplanes; i++) {
+			if (sizes[i] < q_data->sizeimage[i])
+				return -EINVAL;
+		}
+	} else {
+		if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+			*nplanes = 2;
+		else
+			*nplanes = 1;
+
+		for (i = 0; i < *nplanes; i++)
+			sizes[i] = q_data->sizeimage[i];
+	}
+
+	mtk_v4l2_debug(1,
+			"[%d]\t type = %d, get %d plane(s), %d buffer(s) of size 0x%x 0x%x ",
+			ctx->id, vq->type, *nplanes, *nbuffers,
+			sizes[0], sizes[1]);
+
+	return 0;
+}
+
+static int vb2ops_vdec_buf_prepare(struct vb2_buffer *vb)
+{
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+	struct mtk_q_data *q_data;
+	int i;
+
+	mtk_v4l2_debug(3, "[%d] (%d) id=%d",
+			ctx->id, vb->vb2_queue->type, vb->index);
+
+	q_data = mtk_vdec_get_q_data(ctx, vb->vb2_queue->type);
+
+	for (i = 0; i < q_data->fmt->num_planes; i++) {
+		if (vb2_plane_size(vb, i) < q_data->sizeimage[i]) {
+			mtk_v4l2_err("data will not fit into plane %d (%lu < %d)",
+				i, vb2_plane_size(vb, i),
+				q_data->sizeimage[i]);
+		}
+	}
+
+	return 0;
+}
+
+static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_buffer *src_buf;
+	struct mtk_vcodec_mem src_mem;
+	bool res_chg = false;
+	int ret = 0;
+	unsigned int dpbsize = 1;
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+	struct vb2_v4l2_buffer *vb2_v4l2 = container_of(vb,
+				struct vb2_v4l2_buffer, vb2_buf);
+	struct mtk_video_dec_buf *buf = container_of(vb2_v4l2,
+				struct mtk_video_dec_buf, vb);
+
+	mtk_v4l2_debug(3, "[%d] (%d) id=%d, vb=%p",
+			ctx->id, vb->vb2_queue->type,
+			vb->index, vb);
+	/*
+	 * check if this buffer is ready to be used after decode
+	 */
+	if (vb->vb2_queue->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		mutex_lock(&ctx->lock);
+		if (buf->used == false) {
+			v4l2_m2m_buf_queue(ctx->m2m_ctx,
+					to_vb2_v4l2_buffer(vb));
+			buf->queued_in_vb2 = true;
+			buf->queued_in_v4l2 = true;
+			buf->ready_to_display = false;
+		} else {
+			buf->queued_in_vb2 = false;
+			buf->queued_in_v4l2 = true;
+			buf->ready_to_display = false;
+		}
+		mutex_unlock(&ctx->lock);
+		return;
+	}
+
+	v4l2_m2m_buf_queue(ctx->m2m_ctx, vb2_v4l2);
+
+	if (ctx->state != MTK_STATE_INIT) {
+		mtk_v4l2_debug(3, "[%d] already init driver %d",
+				ctx->id, ctx->state);
+		return;
+	}
+
+	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+	if (!src_buf) {
+		mtk_v4l2_err("No src buffer");
+		return;
+	}
+
+	src_mem.va = vb2_plane_vaddr(src_buf, 0);
+	src_mem.dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+	src_mem.size = (size_t)src_buf->planes[0].bytesused;
+	mtk_v4l2_debug(2,
+			"[%d] buf id=%d va=%p dma=%pad size=%zx",
+			ctx->id, src_buf->index,
+			src_mem.va, &src_mem.dma_addr,
+			src_mem.size);
+
+	ret = vdec_if_decode(ctx, &src_mem, NULL, &res_chg);
+	if (ret || !res_chg) {
+		/*
+		 * fb == NULL menas to parse SPS/PPS header or
+		 * resolution info in src_mem. Decode can fail
+		 * if there is no SPS header or picture info
+		 * in bs
+		 */
+		int log_level = ret ? 0 : 1;
+
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
+					VB2_BUF_STATE_DONE);
+		mtk_v4l2_debug(log_level,
+				"[%d] vdec_if_decode() src_buf=%d, size=%zu, fail=%d, res_chg=%d",
+				ctx->id, src_buf->index,
+				src_mem.size, ret, res_chg);
+		return;
+	}
+
+	if (vdec_if_get_param(ctx, GET_PARAM_PIC_INFO, &ctx->picinfo)) {
+		mtk_v4l2_err("[%d]Error!! Cannot get param : GET_PARAM_PICTURE_INFO ERR",
+				ctx->id);
+		return;
+	}
+
+	ctx->last_decoded_picinfo = ctx->picinfo;
+	ctx->q_data[MTK_Q_DATA_DST].sizeimage[0] =
+						ctx->picinfo.y_bs_sz +
+						ctx->picinfo.y_len_sz;
+	ctx->q_data[MTK_Q_DATA_DST].bytesperline[0] =
+						ctx->picinfo.buf_w;
+	ctx->q_data[MTK_Q_DATA_DST].sizeimage[1] =
+						ctx->picinfo.c_bs_sz +
+						ctx->picinfo.c_len_sz;
+	ctx->q_data[MTK_Q_DATA_DST].bytesperline[1] = ctx->picinfo.buf_w;
+	mtk_v4l2_debug(2, "[%d] vdec_if_init() OK wxh=%dx%d pic wxh=%dx%d sz[0]=0x%x sz[1]=0x%x",
+			ctx->id,
+			ctx->picinfo.buf_w, ctx->picinfo.buf_h,
+			ctx->picinfo.pic_w, ctx->picinfo.pic_h,
+			ctx->q_data[MTK_Q_DATA_DST].sizeimage[0],
+			ctx->q_data[MTK_Q_DATA_DST].sizeimage[1]);
+
+	ret = vdec_if_get_param(ctx, GET_PARAM_DPB_SIZE, &dpbsize);
+	if (dpbsize == 0)
+		mtk_v4l2_err("[%d] GET_PARAM_DPB_SIZE fail=%d", ctx->id, ret);
+
+	ctx->dpb_size = dpbsize;
+	ctx->state = MTK_STATE_HEADER;
+	mtk_v4l2_debug(1, "[%d] dpbsize=%d", ctx->id, ctx->dpb_size);
+}
+
+static void vb2ops_vdec_buf_finish(struct vb2_buffer *vb)
+{
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+	struct vb2_v4l2_buffer *vb2_v4l2;
+	struct mtk_video_dec_buf *buf;
+
+	if (vb->vb2_queue->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		return;
+
+	vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
+	buf = container_of(vb2_v4l2, struct mtk_video_dec_buf, vb);
+	mutex_lock(&ctx->lock);
+	buf->queued_in_v4l2 = false;
+	buf->queued_in_vb2 = false;
+	mutex_unlock(&ctx->lock);
+}
+
+static int vb2ops_vdec_buf_init(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vb2_v4l2 = container_of(vb,
+					struct vb2_v4l2_buffer, vb2_buf);
+	struct mtk_video_dec_buf *buf = container_of(vb2_v4l2,
+					struct mtk_video_dec_buf, vb);
+
+	if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+		buf->used = false;
+		buf->ready_to_display = false;
+		buf->queued_in_v4l2 = false;
+	} else {
+		buf->lastframe = false;
+	}
+
+	return 0;
+}
+
+static int vb2ops_vdec_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(q);
+
+	if (ctx->state == MTK_STATE_FLUSH)
+		ctx->state = MTK_STATE_HEADER;
+
+	return 0;
+}
+
+static void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
+{
+	struct vb2_buffer *src_buf = NULL, *dst_buf = NULL;
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(q);
+
+	mtk_v4l2_debug(3, "[%d] (%d) state=(%x) ctx->decoded_frame_cnt=%d",
+			ctx->id, q->type, ctx->state, ctx->decoded_frame_cnt);
+
+	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		while ((src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx)))
+			v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
+					VB2_BUF_STATE_ERROR);
+		return;
+	}
+
+	if (ctx->state >= MTK_STATE_HEADER) {
+
+		/* Until STREAMOFF is called on the CAPTURE queue
+		 * (acknowledging the event), the driver operates
+		 * as if the resolution hasn't changed yet, i.e.
+		 * VIDIOC_G_FMT< etc. return previous resolution.
+		 * So we update picinfo here
+		 */
+		ctx->picinfo = ctx->last_decoded_picinfo;
+
+		mtk_v4l2_debug(2,
+				"[%d]-> new(%d,%d), old(%d,%d), real(%d,%d)",
+				ctx->id, ctx->last_decoded_picinfo.pic_w,
+				ctx->last_decoded_picinfo.pic_h,
+				ctx->picinfo.pic_w, ctx->picinfo.pic_h,
+				ctx->last_decoded_picinfo.buf_w,
+				ctx->last_decoded_picinfo.buf_h);
+
+		mtk_vdec_flush_decoder(ctx);
+	}
+	ctx->state = MTK_STATE_FLUSH;
+
+	while ((dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx))) {
+		vb2_set_plane_payload(dst_buf, 0, 0);
+		vb2_set_plane_payload(dst_buf, 1, 0);
+		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf),
+					VB2_BUF_STATE_ERROR);
+	}
+
+}
+
+static void m2mops_vdec_device_run(void *priv)
+{
+	struct mtk_vcodec_ctx *ctx = priv;
+	struct mtk_vcodec_dev *dev = ctx->dev;
+
+	queue_work(dev->decode_workqueue, &ctx->decode_work);
+}
+
+static int m2mops_vdec_job_ready(void *m2m_priv)
+{
+	struct mtk_vcodec_ctx *ctx = m2m_priv;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+
+	if (ctx->state == MTK_STATE_ABORT)
+		return 0;
+
+	if ((ctx->last_decoded_picinfo.pic_w != ctx->picinfo.pic_w) ||
+	    (ctx->last_decoded_picinfo.pic_h != ctx->picinfo.pic_h))
+		return 0;
+
+	if (ctx->state != MTK_STATE_HEADER)
+		return 0;
+
+	return 1;
+}
+
+static void m2mops_vdec_job_abort(void *priv)
+{
+	struct mtk_vcodec_ctx *ctx = priv;
+
+	ctx->state = MTK_STATE_ABORT;
+}
+
+static int mtk_vdec_g_v_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct mtk_vcodec_ctx *ctx = ctrl_to_ctx(ctrl);
+	int ret = 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
+		if (ctx->state >= MTK_STATE_HEADER) {
+			ctrl->val = ctx->dpb_size;
+		} else {
+			mtk_v4l2_debug(0, "Seqinfo not ready");
+			ctrl->val = 0;
+		}
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops mtk_vcodec_dec_ctrl_ops = {
+	.g_volatile_ctrl = mtk_vdec_g_v_ctrl,
+};
+
+int mtk_vcodec_dec_ctrls_setup(struct mtk_vcodec_ctx *ctx)
+{
+	struct v4l2_ctrl *ctrl;
+
+	v4l2_ctrl_handler_init(&ctx->ctrl_hdl, 1);
+
+	ctrl = v4l2_ctrl_new_std(&ctx->ctrl_hdl,
+				&mtk_vcodec_dec_ctrl_ops,
+				V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
+				0, 32, 1, 1);
+	ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+
+	if (ctx->ctrl_hdl.error) {
+		mtk_v4l2_err("Adding control failed %d",
+				ctx->ctrl_hdl.error);
+		return ctx->ctrl_hdl.error;
+	}
+
+	v4l2_ctrl_handler_setup(&ctx->ctrl_hdl);
+	return 0;
+}
+
+static void m2mops_vdec_lock(void *m2m_priv)
+{
+	struct mtk_vcodec_ctx *ctx = m2m_priv;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+	mutex_lock(&ctx->dev->dev_mutex);
+}
+
+static void m2mops_vdec_unlock(void *m2m_priv)
+{
+	struct mtk_vcodec_ctx *ctx = m2m_priv;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+	mutex_unlock(&ctx->dev->dev_mutex);
+}
+
+const struct v4l2_m2m_ops mtk_vdec_m2m_ops = {
+	.device_run	= m2mops_vdec_device_run,
+	.job_ready	= m2mops_vdec_job_ready,
+	.job_abort	= m2mops_vdec_job_abort,
+	.lock		= m2mops_vdec_lock,
+	.unlock		= m2mops_vdec_unlock,
+};
+
+static const struct vb2_ops mtk_vdec_vb2_ops = {
+	.queue_setup	= vb2ops_vdec_queue_setup,
+	.buf_prepare	= vb2ops_vdec_buf_prepare,
+	.buf_queue	= vb2ops_vdec_buf_queue,
+	.wait_prepare	= vb2_ops_wait_prepare,
+	.wait_finish	= vb2_ops_wait_finish,
+	.buf_init	= vb2ops_vdec_buf_init,
+	.buf_finish	= vb2ops_vdec_buf_finish,
+	.start_streaming	= vb2ops_vdec_start_streaming,
+	.stop_streaming	= vb2ops_vdec_stop_streaming,
+};
+
+const struct v4l2_ioctl_ops mtk_vdec_ioctl_ops = {
+	.vidioc_streamon	= v4l2_m2m_ioctl_streamon,
+	.vidioc_streamoff	= v4l2_m2m_ioctl_streamoff,
+	.vidioc_reqbufs		= v4l2_m2m_ioctl_reqbufs,
+	.vidioc_querybuf	= v4l2_m2m_ioctl_querybuf,
+	.vidioc_expbuf		= v4l2_m2m_ioctl_expbuf,
+
+	.vidioc_qbuf		= vidioc_vdec_qbuf,
+	.vidioc_dqbuf		= vidioc_vdec_dqbuf,
+
+	.vidioc_try_fmt_vid_cap_mplane	= vidioc_try_fmt_vid_cap_mplane,
+	.vidioc_try_fmt_vid_out_mplane	= vidioc_try_fmt_vid_out_mplane,
+
+	.vidioc_s_fmt_vid_cap_mplane	= vidioc_vdec_s_fmt,
+	.vidioc_s_fmt_vid_out_mplane	= vidioc_vdec_s_fmt,
+	.vidioc_g_fmt_vid_cap_mplane	= vidioc_vdec_g_fmt,
+	.vidioc_g_fmt_vid_out_mplane	= vidioc_vdec_g_fmt,
+
+	.vidioc_create_bufs		= v4l2_m2m_ioctl_create_bufs,
+
+	.vidioc_enum_fmt_vid_cap_mplane	= vidioc_vdec_enum_fmt_vid_cap_mplane,
+	.vidioc_enum_fmt_vid_out_mplane	= vidioc_vdec_enum_fmt_vid_out_mplane,
+	.vidioc_enum_framesizes	= vidioc_enum_framesizes,
+
+	.vidioc_querycap		= vidioc_vdec_querycap,
+	.vidioc_subscribe_event		= vidioc_vdec_subscribe_evt,
+	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+	.vidioc_g_selection             = vidioc_vdec_g_selection,
+	.vidioc_s_selection             = vidioc_vdec_s_selection,
+};
+
+int mtk_vcodec_dec_queue_init(void *priv, struct vb2_queue *src_vq,
+			   struct vb2_queue *dst_vq)
+{
+	struct mtk_vcodec_ctx *ctx = priv;
+	int ret = 0;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+
+	src_vq->type		= V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+	src_vq->io_modes	= VB2_DMABUF | VB2_MMAP;
+	src_vq->drv_priv	= ctx;
+	src_vq->buf_struct_size = sizeof(struct mtk_video_dec_buf);
+	src_vq->ops		= &mtk_vdec_vb2_ops;
+	src_vq->mem_ops		= &vb2_dma_contig_memops;
+	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	src_vq->lock		= &ctx->dev->dev_mutex;
+	src_vq->dev             = &ctx->dev->plat_dev->dev;
+
+	ret = vb2_queue_init(src_vq);
+	if (ret) {
+		mtk_v4l2_err("Failed to initialize videobuf2 queue(output)");
+		return ret;
+	}
+	dst_vq->type		= V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+	dst_vq->io_modes	= VB2_DMABUF | VB2_MMAP;
+	dst_vq->drv_priv	= ctx;
+	dst_vq->buf_struct_size = sizeof(struct mtk_video_dec_buf);
+	dst_vq->ops		= &mtk_vdec_vb2_ops;
+	dst_vq->mem_ops		= &vb2_dma_contig_memops;
+	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	dst_vq->lock		= &ctx->dev->dev_mutex;
+	dst_vq->dev             = &ctx->dev->plat_dev->dev;
+
+	ret = vb2_queue_init(dst_vq);
+	if (ret) {
+		vb2_queue_release(src_vq);
+		mtk_v4l2_err("Failed to initialize videobuf2 queue(capture)");
+	}
+
+	return ret;
+}