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 unsigned short width; 46 unsigned short height; 47 unsigned int 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 union { 55 struct rkvdec_vp9_decoded_buffer_info vp9; 56 }; 57 }; 58 59 static inline struct rkvdec_decoded_buffer * 60 vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf) 61 { 62 return container_of(buf, struct rkvdec_decoded_buffer, 63 base.vb.vb2_buf); 64 } 65 66 struct rkvdec_coded_fmt_ops { 67 int (*adjust_fmt)(struct rkvdec_ctx *ctx, 68 struct v4l2_format *f); 69 int (*start)(struct rkvdec_ctx *ctx); 70 void (*stop)(struct rkvdec_ctx *ctx); 71 int (*run)(struct rkvdec_ctx *ctx); 72 void (*done)(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *src_buf, 73 struct vb2_v4l2_buffer *dst_buf, 74 enum vb2_buffer_state result); 75 }; 76 77 struct rkvdec_coded_fmt_desc { 78 u32 fourcc; 79 struct v4l2_frmsize_stepwise frmsize; 80 const struct rkvdec_ctrls *ctrls; 81 const struct rkvdec_coded_fmt_ops *ops; 82 unsigned int num_decoded_fmts; 83 const u32 *decoded_fmts; 84 }; 85 86 struct rkvdec_dev { 87 struct v4l2_device v4l2_dev; 88 struct media_device mdev; 89 struct video_device vdev; 90 struct v4l2_m2m_dev *m2m_dev; 91 struct device *dev; 92 struct clk_bulk_data *clocks; 93 void __iomem *regs; 94 struct mutex vdev_lock; /* serializes ioctls */ 95 struct delayed_work watchdog_work; 96 }; 97 98 struct rkvdec_ctx { 99 struct v4l2_fh fh; 100 struct v4l2_format coded_fmt; 101 struct v4l2_format decoded_fmt; 102 const struct rkvdec_coded_fmt_desc *coded_fmt_desc; 103 struct v4l2_ctrl_handler ctrl_hdl; 104 struct rkvdec_dev *dev; 105 void *priv; 106 }; 107 108 static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh) 109 { 110 return container_of(fh, struct rkvdec_ctx, fh); 111 } 112 113 struct rkvdec_aux_buf { 114 void *cpu; 115 dma_addr_t dma; 116 size_t size; 117 }; 118 119 void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run); 120 void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run); 121 122 extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops; 123 extern const struct rkvdec_coded_fmt_ops rkvdec_vp9_fmt_ops; 124 125 #endif /* RKVDEC_H_ */ 126