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/* SPDX-License-Identifier: GPL-2.0 */
/*
* stf_video.h
*
* StarFive Camera Subsystem - V4L2 device node
*
* Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
*/
#ifndef STF_VIDEO_H
#define STF_VIDEO_H
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-v4l2.h>
#define STFCAMSS_FRAME_MIN_WIDTH 64
#define STFCAMSS_FRAME_MAX_WIDTH 1920
#define STFCAMSS_FRAME_MIN_HEIGHT 64
#define STFCAMSS_FRAME_MAX_HEIGHT 1080
#define STFCAMSS_FRAME_WIDTH_ALIGN_8 8
#define STFCAMSS_FRAME_WIDTH_ALIGN_128 128
#define STFCAMSS_MIN_BUFFERS 2
#define STFCAMSS_MAX_ENTITY_NAME_LEN 27
enum stf_v_line_id {
STF_V_LINE_WR = 0,
STF_V_LINE_ISP,
STF_V_LINE_MAX,
};
enum stf_capture_type {
STF_CAPTURE_RAW = 0,
STF_CAPTURE_YUV,
STF_CAPTURE_NUM,
};
struct stfcamss_buffer {
struct vb2_v4l2_buffer vb;
dma_addr_t addr[2];
struct list_head queue;
};
struct fract {
u8 numerator;
u8 denominator;
};
/*
* struct stfcamss_format_info - ISP media bus format information
* @code: V4L2 media bus format code
* @pixelformat: V4L2 pixel format FCC identifier
* @planes: Number of planes
* @vsub: Vertical subsampling (for each plane)
* @bpp: Bits per pixel when stored in memory (for each plane)
*/
struct stfcamss_format_info {
u32 code;
u32 pixelformat;
u8 planes;
u8 vsub[3];
u8 bpp;
};
struct stfcamss_video {
struct stfcamss *stfcamss;
struct vb2_queue vb2_q;
struct video_device vdev;
struct media_pad pad;
struct v4l2_format active_fmt;
enum v4l2_buf_type type;
const struct stfcamss_video_ops *ops;
struct mutex lock; /* serialize device access */
struct mutex q_lock; /* protects the queue */
unsigned int bpl_alignment;
const struct stfcamss_format_info *formats;
unsigned int nformats;
struct v4l2_subdev *source_subdev;
};
struct stfcamss_video_ops {
int (*queue_buffer)(struct stfcamss_video *video,
struct stfcamss_buffer *buf);
int (*flush_buffers)(struct stfcamss_video *video,
enum vb2_buffer_state state);
void (*start_streaming)(struct stfcamss_video *video);
void (*stop_streaming)(struct stfcamss_video *video);
};
int stf_video_register(struct stfcamss_video *video,
struct v4l2_device *v4l2_dev, const char *name);
void stf_video_unregister(struct stfcamss_video *video);
#endif /* STF_VIDEO_H */
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