186 lines
6.0 KiB
C
186 lines
6.0 KiB
C
/*
|
|
* 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-core.h>
|
|
#include <linux/pm.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 buswidth; /* See comment in .c */
|
|
struct soc_camera_ops *ops;
|
|
struct video_device *vdev;
|
|
const struct soc_camera_data_format *current_fmt;
|
|
const struct soc_camera_data_format *formats;
|
|
int num_formats;
|
|
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 */
|
|
void *priv;
|
|
char *drv_name;
|
|
struct soc_camera_host_ops *ops;
|
|
};
|
|
|
|
struct soc_camera_host_ops {
|
|
struct module *owner;
|
|
int (*add)(struct soc_camera_device *);
|
|
void (*remove)(struct soc_camera_device *);
|
|
int (*suspend)(struct soc_camera_device *, pm_message_t state);
|
|
int (*resume)(struct soc_camera_device *);
|
|
int (*set_fmt_cap)(struct soc_camera_device *, __u32,
|
|
struct v4l2_rect *);
|
|
int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *);
|
|
void (*init_videobuf)(struct videobuf_queue *,
|
|
struct soc_camera_device *);
|
|
int (*reqbufs)(struct soc_camera_file *, struct v4l2_requestbuffers *);
|
|
int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
|
|
int (*try_bus_param)(struct soc_camera_device *, __u32);
|
|
int (*set_bus_param)(struct soc_camera_device *, __u32);
|
|
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;
|
|
/* Optional callbacks to power on or off and reset the sensor */
|
|
int (*power)(struct device *, int);
|
|
int (*reset)(struct device *);
|
|
};
|
|
|
|
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);
|
|
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 (*probe)(struct soc_camera_device *);
|
|
void (*remove)(struct soc_camera_device *);
|
|
int (*suspend)(struct soc_camera_device *, pm_message_t state);
|
|
int (*resume)(struct soc_camera_device *);
|
|
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_fmt_cap)(struct soc_camera_device *, __u32,
|
|
struct v4l2_rect *);
|
|
int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *);
|
|
unsigned long (*query_bus_param)(struct soc_camera_device *);
|
|
int (*set_bus_param)(struct soc_camera_device *, unsigned long);
|
|
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
|
|
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;
|
|
};
|
|
|
|
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 SOCAM_MASTER (1 << 0)
|
|
#define SOCAM_SLAVE (1 << 1)
|
|
#define SOCAM_HSYNC_ACTIVE_HIGH (1 << 2)
|
|
#define SOCAM_HSYNC_ACTIVE_LOW (1 << 3)
|
|
#define SOCAM_VSYNC_ACTIVE_HIGH (1 << 4)
|
|
#define SOCAM_VSYNC_ACTIVE_LOW (1 << 5)
|
|
#define SOCAM_DATAWIDTH_8 (1 << 6)
|
|
#define SOCAM_DATAWIDTH_9 (1 << 7)
|
|
#define SOCAM_DATAWIDTH_10 (1 << 8)
|
|
#define SOCAM_DATAWIDTH_16 (1 << 9)
|
|
#define SOCAM_PCLK_SAMPLE_RISING (1 << 10)
|
|
#define SOCAM_PCLK_SAMPLE_FALLING (1 << 11)
|
|
|
|
#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_9 | \
|
|
SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_16)
|
|
|
|
static inline unsigned long soc_camera_bus_param_compatible(
|
|
unsigned long camera_flags, unsigned long bus_flags)
|
|
{
|
|
unsigned long common_flags, hsync, vsync, pclk;
|
|
|
|
common_flags = camera_flags & bus_flags;
|
|
|
|
hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW);
|
|
vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW);
|
|
pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING);
|
|
|
|
return (!hsync || !vsync || !pclk) ? 0 : common_flags;
|
|
}
|
|
|
|
#endif
|