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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Rockchip Video Decoder driver
*
* Copyright (C) 2019 Collabora, Ltd.
*
* Based on rkvdec driver by Google LLC. (Tomasz Figa <tfiga@chromium.org>)
* Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
* Copyright (C) 2011 Samsung Electronics Co., Ltd.
*/
#ifndef RKVDEC_H_
#define RKVDEC_H_
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <linux/wait.h>
#include <linux/clk.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-dma-contig.h>
struct rkvdec_ctx;
struct rkvdec_ctrl_desc {
struct v4l2_ctrl_config cfg;
};
struct rkvdec_ctrls {
const struct rkvdec_ctrl_desc *ctrls;
unsigned int num_ctrls;
};
struct rkvdec_run {
struct {
struct vb2_v4l2_buffer *src;
struct vb2_v4l2_buffer *dst;
} bufs;
};
struct rkvdec_vp9_decoded_buffer_info {
/* Info needed when the decoded frame serves as a reference frame. */
unsigned short width;
unsigned short height;
unsigned int bit_depth : 4;
};
struct rkvdec_decoded_buffer {
/* Must be the first field in this struct. */
struct v4l2_m2m_buffer base;
union {
struct rkvdec_vp9_decoded_buffer_info vp9;
};
};
static inline struct rkvdec_decoded_buffer *
vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf)
{
return container_of(buf, struct rkvdec_decoded_buffer,
base.vb.vb2_buf);
}
struct rkvdec_coded_fmt_ops {
int (*adjust_fmt)(struct rkvdec_ctx *ctx,
struct v4l2_format *f);
int (*start)(struct rkvdec_ctx *ctx);
void (*stop)(struct rkvdec_ctx *ctx);
int (*run)(struct rkvdec_ctx *ctx);
void (*done)(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *src_buf,
struct vb2_v4l2_buffer *dst_buf,
enum vb2_buffer_state result);
int (*try_ctrl)(struct rkvdec_ctx *ctx, struct v4l2_ctrl *ctrl);
enum rkvdec_image_fmt (*get_image_fmt)(struct rkvdec_ctx *ctx,
struct v4l2_ctrl *ctrl);
};
enum rkvdec_image_fmt {
RKVDEC_IMG_FMT_ANY = 0,
RKVDEC_IMG_FMT_420_8BIT,
RKVDEC_IMG_FMT_420_10BIT,
RKVDEC_IMG_FMT_422_8BIT,
RKVDEC_IMG_FMT_422_10BIT,
};
struct rkvdec_decoded_fmt_desc {
u32 fourcc;
enum rkvdec_image_fmt image_fmt;
};
struct rkvdec_coded_fmt_desc {
u32 fourcc;
struct v4l2_frmsize_stepwise frmsize;
const struct rkvdec_ctrls *ctrls;
const struct rkvdec_coded_fmt_ops *ops;
unsigned int num_decoded_fmts;
const struct rkvdec_decoded_fmt_desc *decoded_fmts;
u32 subsystem_flags;
};
struct rkvdec_dev {
struct v4l2_device v4l2_dev;
struct media_device mdev;
struct video_device vdev;
struct v4l2_m2m_dev *m2m_dev;
struct device *dev;
struct clk_bulk_data *clocks;
void __iomem *regs;
struct mutex vdev_lock; /* serializes ioctls */
struct delayed_work watchdog_work;
};
struct rkvdec_ctx {
struct v4l2_fh fh;
struct v4l2_format coded_fmt;
struct v4l2_format decoded_fmt;
const struct rkvdec_coded_fmt_desc *coded_fmt_desc;
struct v4l2_ctrl_handler ctrl_hdl;
struct rkvdec_dev *dev;
enum rkvdec_image_fmt image_fmt;
void *priv;
};
static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh)
{
return container_of(fh, struct rkvdec_ctx, fh);
}
struct rkvdec_aux_buf {
void *cpu;
dma_addr_t dma;
size_t size;
};
void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops;
extern const struct rkvdec_coded_fmt_ops rkvdec_vp9_fmt_ops;
#endif /* RKVDEC_H_ */
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