1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Rockchip Video Decoder driver 4 * 5 * Copyright (C) 2019 Collabora, Ltd. 6 * 7 * Based on rkvdec driver by Google LLC. (Tomasz Figa <tfiga@chromium.org>) 8 * Based on s5p-mfc driver by Samsung Electronics Co., Ltd. 9 * Copyright (C) 2011 Samsung Electronics Co., Ltd. 10 */ 11 #ifndef RKVDEC_H_ 12 #define RKVDEC_H_ 13 14 #include <linux/platform_device.h> 15 #include <linux/videodev2.h> 16 #include <linux/wait.h> 17 #include <linux/clk.h> 18 19 #include <media/v4l2-ctrls.h> 20 #include <media/v4l2-device.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/videobuf2-core.h> 23 #include <media/videobuf2-dma-contig.h> 24 25 struct rkvdec_ctx; 26 27 struct rkvdec_ctrl_desc { 28 struct v4l2_ctrl_config cfg; 29 }; 30 31 struct rkvdec_ctrls { 32 const struct rkvdec_ctrl_desc *ctrls; 33 unsigned int num_ctrls; 34 }; 35 36 struct rkvdec_run { 37 struct { 38 struct vb2_v4l2_buffer *src; 39 struct vb2_v4l2_buffer *dst; 40 } bufs; 41 }; 42 43 struct rkvdec_vp9_decoded_buffer_info { 44 /* Info needed when the decoded frame serves as a reference frame. */ 45 u16 width; 46 u16 height; 47 u32 bit_depth : 4; 48 }; 49 50 struct rkvdec_decoded_buffer { 51 /* Must be the first field in this struct. */ 52 struct v4l2_m2m_buffer base; 53 }; 54 55 static inline struct rkvdec_decoded_buffer * 56 vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf) 57 { 58 return container_of(buf, struct rkvdec_decoded_buffer, 59 base.vb.vb2_buf); 60 } 61 62 struct rkvdec_coded_fmt_ops { 63 int (*adjust_fmt)(struct rkvdec_ctx *ctx, 64 struct v4l2_format *f); 65 int (*start)(struct rkvdec_ctx *ctx); 66 void (*stop)(struct rkvdec_ctx *ctx); 67 int (*run)(struct rkvdec_ctx *ctx); 68 void (*done)(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *src_buf, 69 struct vb2_v4l2_buffer *dst_buf, 70 enum vb2_buffer_state result); 71 }; 72 73 struct rkvdec_coded_fmt_desc { 74 u32 fourcc; 75 struct v4l2_frmsize_stepwise frmsize; 76 const struct rkvdec_ctrls *ctrls; 77 const struct rkvdec_coded_fmt_ops *ops; 78 unsigned int num_decoded_fmts; 79 const u32 *decoded_fmts; 80 }; 81 82 struct rkvdec_dev { 83 struct v4l2_device v4l2_dev; 84 struct media_device mdev; 85 struct video_device vdev; 86 struct v4l2_m2m_dev *m2m_dev; 87 struct device *dev; 88 struct clk_bulk_data *clocks; 89 void __iomem *regs; 90 struct mutex vdev_lock; /* serializes ioctls */ 91 struct delayed_work watchdog_work; 92 }; 93 94 struct rkvdec_ctx { 95 struct v4l2_fh fh; 96 struct v4l2_format coded_fmt; 97 struct v4l2_format decoded_fmt; 98 const struct rkvdec_coded_fmt_desc *coded_fmt_desc; 99 struct v4l2_ctrl_handler ctrl_hdl; 100 struct rkvdec_dev *dev; 101 void *priv; 102 }; 103 104 static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh) 105 { 106 return container_of(fh, struct rkvdec_ctx, fh); 107 } 108 109 struct rkvdec_aux_buf { 110 void *cpu; 111 dma_addr_t dma; 112 size_t size; 113 }; 114 115 void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run); 116 void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run); 117 118 extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops; 119 #endif /* RKVDEC_H_ */ 120