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 int (*try_ctrl)(struct rkvdec_ctx *ctx, struct v4l2_ctrl *ctrl); 76 enum rkvdec_image_fmt (*get_image_fmt)(struct rkvdec_ctx *ctx, 77 struct v4l2_ctrl *ctrl); 78 }; 79 80 enum rkvdec_image_fmt { 81 RKVDEC_IMG_FMT_ANY = 0, 82 RKVDEC_IMG_FMT_420_8BIT, 83 RKVDEC_IMG_FMT_420_10BIT, 84 RKVDEC_IMG_FMT_422_8BIT, 85 RKVDEC_IMG_FMT_422_10BIT, 86 }; 87 88 struct rkvdec_decoded_fmt_desc { 89 u32 fourcc; 90 enum rkvdec_image_fmt image_fmt; 91 }; 92 93 struct rkvdec_coded_fmt_desc { 94 u32 fourcc; 95 struct v4l2_frmsize_stepwise frmsize; 96 const struct rkvdec_ctrls *ctrls; 97 const struct rkvdec_coded_fmt_ops *ops; 98 unsigned int num_decoded_fmts; 99 const struct rkvdec_decoded_fmt_desc *decoded_fmts; 100 u32 subsystem_flags; 101 }; 102 103 struct rkvdec_dev { 104 struct v4l2_device v4l2_dev; 105 struct media_device mdev; 106 struct video_device vdev; 107 struct v4l2_m2m_dev *m2m_dev; 108 struct device *dev; 109 struct clk_bulk_data *clocks; 110 void __iomem *regs; 111 struct mutex vdev_lock; /* serializes ioctls */ 112 struct delayed_work watchdog_work; 113 struct iommu_domain *empty_domain; 114 }; 115 116 struct rkvdec_ctx { 117 struct v4l2_fh fh; 118 struct v4l2_format coded_fmt; 119 struct v4l2_format decoded_fmt; 120 const struct rkvdec_coded_fmt_desc *coded_fmt_desc; 121 struct v4l2_ctrl_handler ctrl_hdl; 122 struct rkvdec_dev *dev; 123 enum rkvdec_image_fmt image_fmt; 124 void *priv; 125 }; 126 127 static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh) 128 { 129 return container_of(fh, struct rkvdec_ctx, fh); 130 } 131 132 struct rkvdec_aux_buf { 133 void *cpu; 134 dma_addr_t dma; 135 size_t size; 136 }; 137 138 void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run); 139 void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run); 140 141 extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops; 142 extern const struct rkvdec_coded_fmt_ops rkvdec_vp9_fmt_ops; 143 144 #endif /* RKVDEC_H_ */ 145