sn9c20x-bridge.h

   1 /**
   2  * @file sn9c20x.h
   3  * @author Dave Neuer
   4  * @date 2008-03-02
   5  *
   6  * @brief Common functions and data for the Sonix SN9C20x webcam bridge chips.
   7  *
   8  * @note Copyright (C) Dave Neuer
   9  *
  10  * @par Licences
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  25  */
  26
  27 #ifndef SN9C20X_BRIDGE_H
  28 #define SN9C20X_BRIDGE_H
  29
  30 #define SN9C20X_I2C_400KHZ      0x01
  31 #define SN9C20X_I2C_READ        0x02
  32 #define SN9C20X_I2C_READY       0x04
  33 #define SN9C20X_I2C_ERROR       0x08
  34 #define SN9C20X_I2C_2WIRE       0x80
  35
  36 /* registers */
  37 #define SN9C20X_SHARPNESS       0x10f6
  38 #define SN9C20X_RED_GAIN        0x118c
  39 #define SN9C20X_GREEN1_GAIN     0x118d
  40 #define SN9C20X_GREEN2_GAIN     0x118e
  41 #define SN9C20X_BLUE_GAIN       0x118f
  42 #define SN9C20X_SCALE           0x1189
  43
  44 #define SN9C20X_NO_SCALE        0x00
  45 #define SN9C20X_1_2_SCALE       0x10
  46 #define SN9C20X_1_4_SCALE       0x20
  47
  48 int sn9c20x_initialize(struct usb_sn9c20x *dev);
  49 int sn9c20x_reset_device(struct usb_sn9c20x *dev);
  50 int sn9c20x_set_LEDs(struct usb_sn9c20x *dev, int enable);
  51 int sn9c20x_set_camera_control(struct usb_sn9c20x *dev,
  52                                  __u32 control, __s32 value);
  53 int sn9c20x_enable_video(struct usb_sn9c20x *dev, int enable);
  54 int sn9c20x_i2c_initialize(struct usb_sn9c20x *dev);
  55
  56 int sn9c20x_write_i2c_data_ext(struct usb_sn9c20x *dev, __u8 nbytes,
  57         __u8 address, const __u8 [nbytes], __u8 last_byte);
  58
  59 static inline int sn9c20x_write_i2c_data(struct usb_sn9c20x *dev, __u8 nbytes,
  60         __u8 address, const __u8 data[nbytes])
  61 {
  62         return sn9c20x_write_i2c_data_ext(dev, nbytes, address, data,
  63                 0x10);
  64 }
  65
  66 int sn9c20x_read_i2c_data(struct usb_sn9c20x *dev, __u8 nbytes,
  67         __u8 address, __u8 *result);
  68
  69 int sn9c20x_write_i2c_data16(struct usb_sn9c20x *dev, __u8 datalen,
  70         __u8 address, const __u16 [datalen]);
  71
  72 int sn9c20x_read_i2c_data16(struct usb_sn9c20x *dev, __u8 datalen,
  73         __u8 address, __u16 *result);
  74
  75 int sn9c20x_write_i2c_array(struct usb_sn9c20x *dev,
  76         struct sn9c20x_i2c_regs *regs, int bits16);
  77
  78 int sn9c20x_set_resolution(struct usb_sn9c20x *dev,
  79         int width, int height);
  80
  81 int sn9c20x_get_closest_resolution(struct usb_sn9c20x *, int *, int *);
  82 int sn9c20x_set_format(struct usb_sn9c20x *, __u32);
  83 void sn9c20x_set_jpeg(struct usb_sn9c20x *);
  84 void sn9c20x_set_raw(struct usb_sn9c20x *);
  85 void sn9c20x_set_yuv420(struct usb_sn9c20x *);
  86 void sn9c20x_set_yuv422(struct usb_sn9c20x *);
  87
  88 #endif