LXR linux/drivers/media/video/ovcamchip/ovcamchip

   1/* OmniVision* camera chip driver private definitions for core code and
   2 * chip-specific code
   3 *
   4 * Copyright (c) 1999-2004 Mark McClelland
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License as published by the
   8 * Free Software Foundation; either version 2 of the License, or (at your
   9 * option) any later version. NO WARRANTY OF ANY KIND is expressed or implied.
  10 *
  11 * * OmniVision is a trademark of OmniVision Technologies, Inc. This driver
  12 * is not sponsored or developed by them.
  13 */
  14
  15#ifndef __LINUX_OVCAMCHIP_PRIV_H
  16#define __LINUX_OVCAMCHIP_PRIV_H
  17
  18#include <linux/i2c.h>
  19#include <media/v4l2-subdev.h>
  20#include <media/ovcamchip.h>
  21
  22#ifdef DEBUG
  23extern int ovcamchip_debug;
  24#endif
  25
  26#define PDEBUG(level, fmt, args...) \
  27        if (ovcamchip_debug >= (level)) pr_debug("[%s:%d] " fmt "\n", \
  28                __func__, __LINE__ , ## args)
  29
  30#define DDEBUG(level, dev, fmt, args...) \
  31        if (ovcamchip_debug >= (level)) dev_dbg(dev, "[%s:%d] " fmt "\n", \
  32                __func__, __LINE__ , ## args)
  33
  34/* Number of times to retry chip detection. Increase this if you are getting
  35 * "Failed to init camera chip" */
  36#define I2C_DETECT_RETRIES      10
  37
  38struct ovcamchip_regvals {
  39        unsigned char reg;
  40        unsigned char val;
  41};
  42
  43struct ovcamchip_ops {
  44        int (*init)(struct i2c_client *);
  45        int (*free)(struct i2c_client *);
  46        int (*command)(struct i2c_client *, unsigned int, void *);
  47};
  48
  49struct ovcamchip {
  50        struct v4l2_subdev sd;
  51        struct ovcamchip_ops *sops;
  52        void *spriv;               /* Private data for OV7x10.c etc... */
  53        int subtype;               /* = SEN_OV7610 etc... */
  54        int mono;                  /* Monochrome chip? (invalid until init) */
  55        int initialized;           /* OVCAMCHIP_CMD_INITIALIZE was successful */
  56};
  57
  58static inline struct ovcamchip *to_ovcamchip(struct v4l2_subdev *sd)
  59{
  60        return container_of(sd, struct ovcamchip, sd);
  61}
  62
  63extern struct ovcamchip_ops ov6x20_ops;
  64extern struct ovcamchip_ops ov6x30_ops;
  65extern struct ovcamchip_ops ov7x10_ops;
  66extern struct ovcamchip_ops ov7x20_ops;
  67extern struct ovcamchip_ops ov76be_ops;
  68
  69/* --------------------------------- */
  70/*              I2C I/O              */
  71/* --------------------------------- */
  72
  73static inline int ov_read(struct i2c_client *c, unsigned char reg,
  74                          unsigned char *value)
  75{
  76        int rc;
  77
  78        rc = i2c_smbus_read_byte_data(c, reg);
  79        *value = (unsigned char) rc;
  80        return rc;
  81}
  82
  83static inline int ov_write(struct i2c_client *c, unsigned char reg,
  84                           unsigned char value )
  85{
  86        return i2c_smbus_write_byte_data(c, reg, value);
  87}
  88
  89/* --------------------------------- */
  90/*        FUNCTION PROTOTYPES        */
  91/* --------------------------------- */
  92
  93/* Functions in ovcamchip_core.c */
  94
  95extern int ov_write_regvals(struct i2c_client *c,
  96                            struct ovcamchip_regvals *rvals);
  97
  98extern int ov_write_mask(struct i2c_client *c, unsigned char reg,
  99                         unsigned char value, unsigned char mask);
 100
 101#endif
 102