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/* SPDX-License-Identifier: GPL-2.0 */
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <>
* Tiffany Lin <>
#ifndef _MTK_VCODEC_DEC_H_
#define _MTK_VCODEC_DEC_H_
#include <media/videobuf2-core.h>
#include <media/v4l2-mem2mem.h>
#define MTK_VDEC_MAX_W 2048U
#define MTK_VDEC_MAX_H 1088U
* struct vdec_fb - decoder frame buffer
* @base_y : Y plane memory info
* @base_c : C plane memory info
* @status : frame buffer status (vdec_fb_status)
struct vdec_fb {
struct mtk_vcodec_mem base_y;
struct mtk_vcodec_mem base_c;
unsigned int status;
* struct mtk_video_dec_buf - Private data related to each VB2 buffer.
* @m2m_buf: M2M buffer
* @list: link list
* @used: Capture buffer contain decoded frame data and keep in
* codec data structure
* @queued_in_vb2: Capture buffer is queue in vb2
* @queued_in_v4l2: Capture buffer is in v4l2 driver, but not in vb2
* queue yet
* @lastframe: Intput buffer is last buffer - EOS
* @error: An unrecoverable error occurs on this buffer.
* @frame_buffer: Decode status, and buffer information of Capture buffer
* Note : These status information help us track and debug buffer state
struct mtk_video_dec_buf {
struct v4l2_m2m_buffer m2m_buf;
bool used;
bool queued_in_vb2;
bool queued_in_v4l2;
bool lastframe;
bool error;
struct vdec_fb frame_buffer;
extern const struct v4l2_ioctl_ops mtk_vdec_ioctl_ops;
extern const struct v4l2_m2m_ops mtk_vdec_m2m_ops;
* mtk_vdec_lock/mtk_vdec_unlock are for ctx instance to
* get/release lock before/after access decoder hw.
* mtk_vdec_lock get decoder hw lock and set curr_ctx
* to ctx instance that get lock
void mtk_vdec_unlock(struct mtk_vcodec_ctx *ctx);
void mtk_vdec_lock(struct mtk_vcodec_ctx *ctx);
int mtk_vcodec_dec_queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq);
void mtk_vcodec_dec_set_default_params(struct mtk_vcodec_ctx *ctx);
void mtk_vcodec_dec_release(struct mtk_vcodec_ctx *ctx);
int mtk_vcodec_dec_ctrls_setup(struct mtk_vcodec_ctx *ctx);
#endif /* _MTK_VCODEC_DEC_H_ */