drivers/media/video/ovcamchip/ovcamchip_priv.h

   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 <media/ovcamchip.h>
  19
  20 #ifdef DEBUG
  21 extern int ovcamchip_debug;
  22 #endif
  23
  24 #define PDEBUG(level, fmt, args...) \
  25         if (ovcamchip_debug >= (level)) pr_debug("[%s:%d] " fmt "\n", \
  26                 __FUNCTION__, __LINE__ , ## args)
  27
  28 #define DDEBUG(level, dev, fmt, args...) \
  29         if (ovcamchip_debug >= (level)) dev_dbg(dev, "[%s:%d] " fmt "\n", \
  30                 __FUNCTION__, __LINE__ , ## args)
  31
  32 /* Number of times to retry chip detection. Increase this if you are getting
  33  * "Failed to init camera chip" */
  34 #define I2C_DETECT_RETRIES      10
  35
  36 struct ovcamchip_regvals {
  37         unsigned char reg;
  38         unsigned char val;
  39 };
  40
  41 struct ovcamchip_ops {
  42         int (*init)(struct i2c_client *);
  43         int (*free)(struct i2c_client *);
  44         int (*command)(struct i2c_client *, unsigned int, void *);
  45 };
  46
  47 struct ovcamchip {
  48         struct ovcamchip_ops *sops;
  49         void *spriv;               /* Private data for OV7x10.c etc... */
  50         int subtype;               /* = SEN_OV7610 etc... */
  51         int mono;                  /* Monochrome chip? (invalid until init) */
  52         int initialized;           /* OVCAMCHIP_CMD_INITIALIZE was successful */
  53 };
  54
  55 /* --------------------------------- */
  56 /*              I2C I/O              */
  57 /* --------------------------------- */
  58
  59 static inline int ov_read(struct i2c_client *c, unsigned char reg,
  60                           unsigned char *value)
  61 {
  62         int rc;
  63
  64         rc = i2c_smbus_read_byte_data(c, reg);
  65         *value = (unsigned char) rc;
  66         return rc;
  67 }
  68
  69 static inline int ov_write(struct i2c_client *c, unsigned char reg,
  70                            unsigned char value )
  71 {
  72         return i2c_smbus_write_byte_data(c, reg, value);
  73 }
  74
  75 /* --------------------------------- */
  76 /*        FUNCTION PROTOTYPES        */
  77 /* --------------------------------- */
  78
  79 /* Functions in ovcamchip_core.c */
  80
  81 extern int ov_write_regvals(struct i2c_client *c,
  82                             struct ovcamchip_regvals *rvals);
  83
  84 extern int ov_write_mask(struct i2c_client *c, unsigned char reg,
  85                          unsigned char value, unsigned char mask);
  86
  87 #endif