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        u32 mandatory : 1;
  29        struct v4l2_ctrl_config cfg;
  30};
  31
  32struct rkvdec_ctrls {
  33        const struct rkvdec_ctrl_desc *ctrls;
  34        unsigned int num_ctrls;
  35};
  36
  37struct rkvdec_run {
  38        struct {
  39                struct vb2_v4l2_buffer *src;
  40                struct vb2_v4l2_buffer *dst;
  41        } bufs;
  42};
  43
  44struct rkvdec_vp9_decoded_buffer_info {
  45        /* Info needed when the decoded frame serves as a reference frame. */
  46        u16 width;
  47        u16 height;
  48        u32 bit_depth : 4;
  49};
  50
  51struct rkvdec_decoded_buffer {
  52        /* Must be the first field in this struct. */
  53        struct v4l2_m2m_buffer base;
  54};
  55
  56static inline struct rkvdec_decoded_buffer *
  57vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf)
  58{
  59        return container_of(buf, struct rkvdec_decoded_buffer,
  60                            base.vb.vb2_buf);
  61}
  62
  63struct rkvdec_coded_fmt_ops {
  64        int (*adjust_fmt)(struct rkvdec_ctx *ctx,
  65                          struct v4l2_format *f);
  66        int (*start)(struct rkvdec_ctx *ctx);
  67        void (*stop)(struct rkvdec_ctx *ctx);
  68        int (*run)(struct rkvdec_ctx *ctx);
  69        void (*done)(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *src_buf,
  70                     struct vb2_v4l2_buffer *dst_buf,
  71                     enum vb2_buffer_state result);
  72};
  73
  74struct rkvdec_coded_fmt_desc {
  75        u32 fourcc;
  76        struct v4l2_frmsize_stepwise frmsize;
  77        const struct rkvdec_ctrls *ctrls;
  78        const struct rkvdec_coded_fmt_ops *ops;
  79        unsigned int num_decoded_fmts;
  80        const u32 *decoded_fmts;
  81};
  82
  83struct rkvdec_dev {
  84        struct v4l2_device v4l2_dev;
  85        struct media_device mdev;
  86        struct video_device vdev;
  87        struct v4l2_m2m_dev *m2m_dev;
  88        struct device *dev;
  89        struct clk_bulk_data *clocks;
  90        void __iomem *regs;
  91        struct mutex vdev_lock; /* serializes ioctls */
  92        struct delayed_work watchdog_work;
  93};
  94
  95struct rkvdec_ctx {
  96        struct v4l2_fh fh;
  97        struct v4l2_format coded_fmt;
  98        struct v4l2_format decoded_fmt;
  99        const struct rkvdec_coded_fmt_desc *coded_fmt_desc;
 100        struct v4l2_ctrl_handler ctrl_hdl;
 101        struct rkvdec_dev *dev;
 102        void *priv;
 103};
 104
 105static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh)
 106{
 107        return container_of(fh, struct rkvdec_ctx, fh);
 108}
 109
 110struct rkvdec_aux_buf {
 111        void *cpu;
 112        dma_addr_t dma;
 113        size_t size;
 114};
 115
 116void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
 117void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
 118
 119extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops;
 120#endif /* RKVDEC_H_ */
 121