LXR linux/drivers/staging/media/rkvdec/rkvdec.h

   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
  25struct rkvdec_ctx;
  26
  27struct rkvdec_ctrl_desc {
  28        struct v4l2_ctrl_config cfg;
  29};
  30
  31struct rkvdec_ctrls {
  32        const struct rkvdec_ctrl_desc *ctrls;
  33        unsigned int num_ctrls;
  34};
  35
  36struct rkvdec_run {
  37        struct {
  38                struct vb2_v4l2_buffer *src;
  39                struct vb2_v4l2_buffer *dst;
  40        } bufs;
  41};
  42
  43struct 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
  50struct 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
  59static inline struct rkvdec_decoded_buffer *
  60vb2_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
  66struct 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};
  77
  78struct rkvdec_coded_fmt_desc {
  79        u32 fourcc;
  80        struct v4l2_frmsize_stepwise frmsize;
  81        const struct rkvdec_ctrls *ctrls;
  82        const struct rkvdec_coded_fmt_ops *ops;
  83        unsigned int num_decoded_fmts;
  84        const u32 *decoded_fmts;
  85        u32 subsystem_flags;
  86};
  87
  88struct rkvdec_dev {
  89        struct v4l2_device v4l2_dev;
  90        struct media_device mdev;
  91        struct video_device vdev;
  92        struct v4l2_m2m_dev *m2m_dev;
  93        struct device *dev;
  94        struct clk_bulk_data *clocks;
  95        void __iomem *regs;
  96        struct mutex vdev_lock; /* serializes ioctls */
  97        struct delayed_work watchdog_work;
  98};
  99
 100struct rkvdec_ctx {
 101        struct v4l2_fh fh;
 102        struct v4l2_format coded_fmt;
 103        struct v4l2_format decoded_fmt;
 104        const struct rkvdec_coded_fmt_desc *coded_fmt_desc;
 105        struct v4l2_ctrl_handler ctrl_hdl;
 106        struct rkvdec_dev *dev;
 107        void *priv;
 108};
 109
 110static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh)
 111{
 112        return container_of(fh, struct rkvdec_ctx, fh);
 113}
 114
 115struct rkvdec_aux_buf {
 116        void *cpu;
 117        dma_addr_t dma;
 118        size_t size;
 119};
 120
 121void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
 122void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
 123
 124extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops;
 125extern const struct rkvdec_coded_fmt_ops rkvdec_vp9_fmt_ops;
 126
 127#endif /* RKVDEC_H_ */
 128