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/*
* camera image capture (abstract) bus driver header
*
* Copyright (C) 2006, Sascha Hauer, Pengutronix
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef SOC_CAMERA_H
#define SOC_CAMERA_H
#include <linux/videodev2.h>
#include <media/videobuf-dma-sg.h>
struct soc_camera_device {
struct list_head list;
struct device dev;
struct device *control;
unsigned short width; /* Current window */
unsigned short height; /* sizes */
unsigned short x_min; /* Camera capabilities */
unsigned short y_min;
unsigned short x_current; /* Current window location */
unsigned short y_current;
unsigned short width_min;
unsigned short width_max;
unsigned short height_min;
unsigned short height_max;
unsigned short y_skip_top; /* Lines to skip at the top */
unsigned short gain;
unsigned short exposure;
unsigned char iface; /* Host number */
unsigned char devnum; /* Device number per host */
unsigned char cached_datawidth; /* See comment in .c */
struct soc_camera_ops *ops;
struct video_device *vdev;
const struct soc_camera_data_format *current_fmt;
int (*probe)(struct soc_camera_device *icd);
void (*remove)(struct soc_camera_device *icd);
struct module *owner;
/* soc_camera.c private count. Only accessed with video_lock held */
int use_count;
};
struct soc_camera_file {
struct soc_camera_device *icd;
struct videobuf_queue vb_vidq;
};
struct soc_camera_host {
struct list_head list;
struct device dev;
unsigned char nr; /* Host number */
size_t msize;
struct videobuf_queue_ops *vbq_ops;
struct module *owner;
void *priv;
char *drv_name;
int (*add)(struct soc_camera_device *);
void (*remove)(struct soc_camera_device *);
int (*set_capture_format)(struct soc_camera_device *, __u32,
struct v4l2_rect *);
int (*try_fmt_cap)(struct soc_camera_host *, struct v4l2_format *);
int (*reqbufs)(struct soc_camera_file *, struct v4l2_requestbuffers *);
int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
unsigned int (*poll)(struct file *, poll_table *);
};
struct soc_camera_link {
/* Camera bus id, used to match a camera and a bus */
int bus_id;
/* GPIO number to switch between 8 and 10 bit modes */
unsigned int gpio;
};
static inline struct soc_camera_device *to_soc_camera_dev(struct device *dev)
{
return container_of(dev, struct soc_camera_device, dev);
}
static inline struct soc_camera_host *to_soc_camera_host(struct device *dev)
{
return container_of(dev, struct soc_camera_host, dev);
}
extern int soc_camera_host_register(struct soc_camera_host *ici,
struct module *owner);
extern void soc_camera_host_unregister(struct soc_camera_host *ici);
extern int soc_camera_device_register(struct soc_camera_device *icd);
extern void soc_camera_device_unregister(struct soc_camera_device *icd);
extern int soc_camera_video_start(struct soc_camera_device *icd);
extern void soc_camera_video_stop(struct soc_camera_device *icd);
struct soc_camera_data_format {
char *name;
unsigned int depth;
__u32 fourcc;
enum v4l2_colorspace colorspace;
};
struct soc_camera_ops {
struct module *owner;
int (*init)(struct soc_camera_device *);
int (*release)(struct soc_camera_device *);
int (*start_capture)(struct soc_camera_device *);
int (*stop_capture)(struct soc_camera_device *);
int (*set_capture_format)(struct soc_camera_device *, __u32,
struct v4l2_rect *, unsigned int);
int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *);
int (*get_chip_id)(struct soc_camera_device *,
struct v4l2_chip_ident *);
#ifdef CONFIG_VIDEO_ADV_DEBUG
int (*get_register)(struct soc_camera_device *, struct v4l2_register *);
int (*set_register)(struct soc_camera_device *, struct v4l2_register *);
#endif
const struct soc_camera_data_format *formats;
int num_formats;
int (*get_control)(struct soc_camera_device *, struct v4l2_control *);
int (*set_control)(struct soc_camera_device *, struct v4l2_control *);
const struct v4l2_queryctrl *controls;
int num_controls;
unsigned int(*get_datawidth)(struct soc_camera_device *icd);
};
static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
struct soc_camera_ops *ops, int id)
{
int i;
for (i = 0; i < ops->num_controls; i++)
if (ops->controls[i].id == id)
return &ops->controls[i];
return NULL;
}
#define IS_MASTER (1<<0)
#define IS_HSYNC_ACTIVE_HIGH (1<<1)
#define IS_VSYNC_ACTIVE_HIGH (1<<2)
#define IS_DATAWIDTH_8 (1<<3)
#define IS_DATAWIDTH_9 (1<<4)
#define IS_DATAWIDTH_10 (1<<5)
#define IS_PCLK_SAMPLE_RISING (1<<6)
#endif
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