text: /* SPDX-License-Identifier: GPL-2.0 */
  /*
   * Copyright (c) 2016 MediaTek Inc.
   * Author: PC Chen <pc.chen@mediatek.com>
   *         Tiffany Lin <tiffany.lin@mediatek.com>
   */
  
  #ifndef _MTK_VCODEC_DEC_H_
  #define _MTK_VCODEC_DEC_H_
  
  #include <media/videobuf2-core.h>
  #include <media/v4l2-mem2mem.h>
  
  #define VCODEC_DEC_ALIGNED_64 64
  #define VCODEC_CAPABILITY_4K_DISABLED	0x10
  #define VCODEC_DEC_4K_CODED_WIDTH	4096U
  #define VCODEC_DEC_4K_CODED_HEIGHT	2304U
  #define MTK_VDEC_MAX_W	2048U
  #define MTK_VDEC_MAX_H	1088U
  #define MTK_VDEC_MIN_W	64U
  #define MTK_VDEC_MIN_H	64U
  
  #define MTK_VDEC_IRQ_STATUS_DEC_SUCCESS        0x10000
  
  /**
   * 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
   * @error:		An unrecoverable error occurs on this buffer.
   * @frame_buffer:	Decode status, and buffer information of Capture buffer
   * @bs_buffer:	Output buffer info
   *
   * 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	error;
  
  	union {
  		struct vdec_fb	frame_buffer;
  		struct mtk_vcodec_mem	bs_buffer;
  	};
  };
  
  extern const struct v4l2_ioctl_ops mtk_vdec_ioctl_ops;
  extern const struct v4l2_m2m_ops mtk_vdec_m2m_ops;
  extern const struct media_device_ops mtk_vcodec_media_ops;
  extern const struct mtk_vcodec_dec_pdata mtk_vdec_8173_pdata;
  extern const struct mtk_vcodec_dec_pdata mtk_vdec_8183_pdata;
  extern const struct mtk_vcodec_dec_pdata mtk_lat_sig_core_pdata;
  
  
  /*
   * 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);
  
  /*
   * VB2 ops
   */
  int vb2ops_vdec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
  			    unsigned int *nplanes, unsigned int sizes[],
  			    struct device *alloc_devs[]);
  int vb2ops_vdec_buf_prepare(struct vb2_buffer *vb);
  void vb2ops_vdec_buf_finish(struct vb2_buffer *vb);
  int vb2ops_vdec_buf_init(struct vb2_buffer *vb);
  int vb2ops_vdec_start_streaming(struct vb2_queue *q, unsigned int count);
  void vb2ops_vdec_stop_streaming(struct vb2_queue *q);
  
  
  #endif /* _MTK_VCODEC_DEC_H_ */
  