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 <linux/i2c.h>
  19 #include <media/v4l2-subdev.h>
  20 #include <media/ovcamchip.h>
  21
  22 #ifdef DEBUG
  23 extern 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
  38 struct ovcamchip_regvals {
  39         unsigned char reg;
  40         unsigned char val;
  41 };
  42
  43 struct 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
  49 struct 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
  58 static inline struct ovcamchip *to_ovcamchip(struct v4l2_subdev *sd)
  59 {
  60         return container_of(sd, struct ovcamchip, sd);
  61 }
  62
  63 extern struct ovcamchip_ops ov6x20_ops;
  64 extern struct ovcamchip_ops ov6x30_ops;
  65 extern struct ovcamchip_ops ov7x10_ops;
  66 extern struct ovcamchip_ops ov7x20_ops;
  67 extern struct ovcamchip_ops ov76be_ops;
  68
  69 /* --------------------------------- */
  70 /*              I2C I/O              */
  71 /* --------------------------------- */
  72
  73 static 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
  83 static 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
  95 extern int ov_write_regvals(struct i2c_client *c,
  96                             struct ovcamchip_regvals *rvals);
  97
  98 extern int ov_write_mask(struct i2c_client *c, unsigned char reg,
  99                          unsigned char value, unsigned char mask);
 100
 101 #endif