ovcamchip_priv.h

支持linux2.6和linux2.4的ov511摄像头驱动源码

/* OmniVision* camera chip driver private definitions for core code and
 * chip-specific code
 *
 * Copyright (c) 1999-2006 Mark McClelland <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version. NO WARRANTY OF ANY KIND is expressed or implied.
 *
 * * OmniVision is a trademark of OmniVision Technologies, Inc. This driver
 * is not sponsored or developed by them.
 */

#ifndef __LINUX_OVCAMCHIP_PRIV_H
#define __LINUX_OVCAMCHIP_PRIV_H

#include "ovcamchip.h"

#define OVCAMCHIP_DEBUG

#ifdef OVCAMCHIP_DEBUG
extern int ovcamchip_debug;
	#define PDEBUG(level, fmt, args...) \
		if (ovcamchip_debug >= (level)) info("[%s:%d] " fmt, \
		__FUNCTION__, __LINE__ , ## args)
#else
	#define PDEBUG(level, fmt, args...) do {} while(0)
#endif

#if !defined(err)
#define err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" , ## arg)
#endif

#if !defined(info)
#define info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , \
 ## arg)
#endif

#if !defined(warn)
#define warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , \
 ## arg)
#endif

/* Number of times to retry chip detection. Increase this if you are getting
 * "Failed to init camera chip" */
#define I2C_DETECT_RETRIES	10

struct ovcamchip_regvals {
	unsigned char reg;
	unsigned char val;
};

struct ovcamchip_ops {
	int (*init)(struct i2c_client *);
	int (*free)(struct i2c_client *);
	int (*command)(struct i2c_client *, unsigned int, void *);
};

struct ovcamchip {
	struct ovcamchip_ops *sops;
	void *spriv;		/* Private data for OV7x10.c etc... */
	int subtype;		/* = SEN_OV7610 etc... */
	int mono;		/* Monochrome chip? (invalid until init) */
	int initialized;	/* OVCAMCHIP_CMD_INITIALIZE was successful */

#if defined(HAVE_V4L2)
	/* V4L2 controls */
	struct v4l2_queryctrl qc_brightness;
	struct v4l2_queryctrl qc_contrast;
	struct v4l2_queryctrl qc_saturation;
	struct v4l2_queryctrl qc_red_balance;
	struct v4l2_queryctrl qc_blue_balance;
	struct v4l2_queryctrl qc_agc;
	struct v4l2_queryctrl qc_gain;
	struct v4l2_queryctrl qc_exposure;
	struct v4l2_queryctrl qc_awb;

	/* Private controls */
	struct v4l2_queryctrl qc_aec;
#endif
};

/* --------------------------------- */
/*              I2C I/O              */
/* --------------------------------- */

static inline int ov_read(struct i2c_client *c, unsigned char reg,
			  unsigned char *value)
{
	int rc;

	rc = i2c_smbus_read_byte_data(c, reg);
	*value = (unsigned char) rc;
	return rc;
}

static inline int ov_write(struct i2c_client *c, unsigned char reg,
			   unsigned char value)
{
	return i2c_smbus_write_byte_data(c, reg, value);
}

/* --------------------------------- */
/*        FUNCTION PROTOTYPES        */
/* --------------------------------- */

/* Functions in ovcamchip_core.c */

extern int ov_write_regvals(struct i2c_client *c,
			    struct ovcamchip_regvals *rvals);

extern int ov_write_mask(struct i2c_client *c, unsigned char reg,
			 unsigned char value, unsigned char mask);

#if defined(HAVE_V4L2)
extern struct v4l2_queryctrl *ovcamchip_get_qc(struct ovcamchip *ov, __u32 id);
#endif

#endif