/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Rockchip Video Decoder driver
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*
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* Copyright (C) 2019 Collabora, Ltd.
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*
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* Based on rkvdec driver by Google LLC. (Tomasz Figa <tfiga@chromium.org>)
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* Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
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* Copyright (C) 2011 Samsung Electronics Co., Ltd.
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*/
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#ifndef RKVDEC_H_
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#define RKVDEC_H_
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#include <linux/platform_device.h>
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#include <linux/videodev2.h>
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#include <linux/wait.h>
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#include <linux/clk.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/videobuf2-core.h>
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#include <media/videobuf2-dma-contig.h>
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struct rkvdec_ctx;
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struct rkvdec_ctrl_desc {
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u32 mandatory : 1;
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struct v4l2_ctrl_config cfg;
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};
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struct rkvdec_ctrls {
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const struct rkvdec_ctrl_desc *ctrls;
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unsigned int num_ctrls;
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};
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struct rkvdec_run {
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struct {
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struct vb2_v4l2_buffer *src;
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struct vb2_v4l2_buffer *dst;
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} bufs;
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};
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struct rkvdec_vp9_decoded_buffer_info {
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/* Info needed when the decoded frame serves as a reference frame. */
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u16 width;
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u16 height;
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u32 bit_depth : 4;
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};
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struct rkvdec_decoded_buffer {
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/* Must be the first field in this struct. */
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struct v4l2_m2m_buffer base;
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};
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static inline struct rkvdec_decoded_buffer *
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vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf)
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{
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return container_of(buf, struct rkvdec_decoded_buffer,
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base.vb.vb2_buf);
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}
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struct rkvdec_coded_fmt_ops {
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int (*adjust_fmt)(struct rkvdec_ctx *ctx,
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struct v4l2_format *f);
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int (*start)(struct rkvdec_ctx *ctx);
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void (*stop)(struct rkvdec_ctx *ctx);
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int (*run)(struct rkvdec_ctx *ctx);
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void (*done)(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *src_buf,
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struct vb2_v4l2_buffer *dst_buf,
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enum vb2_buffer_state result);
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};
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struct rkvdec_coded_fmt_desc {
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u32 fourcc;
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struct v4l2_frmsize_stepwise frmsize;
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const struct rkvdec_ctrls *ctrls;
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const struct rkvdec_coded_fmt_ops *ops;
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unsigned int num_decoded_fmts;
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const u32 *decoded_fmts;
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};
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struct rkvdec_dev {
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struct v4l2_device v4l2_dev;
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struct media_device mdev;
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struct video_device vdev;
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struct v4l2_m2m_dev *m2m_dev;
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struct device *dev;
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struct clk_bulk_data *clocks;
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void __iomem *regs;
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struct mutex vdev_lock; /* serializes ioctls */
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struct delayed_work watchdog_work;
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};
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struct rkvdec_ctx {
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struct v4l2_fh fh;
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struct v4l2_format coded_fmt;
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struct v4l2_format decoded_fmt;
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const struct rkvdec_coded_fmt_desc *coded_fmt_desc;
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struct v4l2_ctrl_handler ctrl_hdl;
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struct rkvdec_dev *dev;
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void *priv;
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};
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static inline struct rkvdec_ctx *fh_to_rkvdec_ctx(struct v4l2_fh *fh)
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{
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return container_of(fh, struct rkvdec_ctx, fh);
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}
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struct rkvdec_aux_buf {
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void *cpu;
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dma_addr_t dma;
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size_t size;
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};
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void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
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void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run);
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extern const struct rkvdec_coded_fmt_ops rkvdec_h264_fmt_ops;
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#endif /* RKVDEC_H_ */
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