drivers/usb/media/zc0301_sensor.h

   1 /***************************************************************************
   2  * API for image sensors connected to the ZC030! Image Processor and       *
   3  * Control Chip                                                            *
   4  *                                                                         *
   5  * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>       *
   6  *                                                                         *
   7  * This program is free software; you can redistribute it and/or modify    *
   8  * it under the terms of the GNU General Public License as published by    *
   9  * the Free Software Foundation; either version 2 of the License, or       *
  10  * (at your option) any later version.                                     *
  11  *                                                                         *
  12  * This program is distributed in the hope that it will be useful,         *
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
  15  * GNU General Public License for more details.                            *
  16  *                                                                         *
  17  * You should have received a copy of the GNU General Public License       *
  18  * along with this program; if not, write to the Free Software             *
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
  20  ***************************************************************************/
  21
  22 #ifndef _ZC0301_SENSOR_H_
  23 #define _ZC0301_SENSOR_H_
  24
  25 #include <linux/usb.h>
  26 #include <linux/videodev.h>
  27 #include <linux/device.h>
  28 #include <linux/stddef.h>
  29 #include <linux/errno.h>
  30 #include <asm/types.h>
  31
  32 struct zc0301_device;
  33 struct zc0301_sensor;
  34
  35 /*****************************************************************************/
  36
  37 extern int zc0301_probe_pas202bcb(struct zc0301_device* cam);
  38
  39 #define ZC0301_SENSOR_TABLE                                                   \
  40 /* Weak detections must go at the end of the list */                          \
  41 static int (*zc0301_sensor_table[])(struct zc0301_device*) = {                \
  42         &zc0301_probe_pas202bcb,                                              \
  43         NULL,                                                                 \
  44 };
  45
  46 extern void
  47 zc0301_attach_sensor(struct zc0301_device* cam,
  48                        struct zc0301_sensor* sensor);
  49
  50 #define ZC0301_USB_DEVICE(vend, prod, intclass)                               \
  51         .match_flags = USB_DEVICE_ID_MATCH_DEVICE |                           \
  52                        USB_DEVICE_ID_MATCH_INT_CLASS,                         \
  53         .idVendor = (vend),                                                   \
  54         .idProduct = (prod),                                                  \
  55         .bInterfaceClass = (intclass)
  56
  57 #define ZC0301_ID_TABLE                                                       \
  58 static const struct usb_device_id zc0301_id_table[] =  {                      \
  59         { ZC0301_USB_DEVICE(0x046d, 0x08ae, 0xff), }, /* PAS202BCB */         \
  60         { }                                                                   \
  61 };
  62
  63 /*****************************************************************************/
  64
  65 extern int zc0301_write_reg(struct zc0301_device*, u16 index, u16 value);
  66 extern int zc0301_read_reg(struct zc0301_device*, u16 index);
  67 extern int zc0301_i2c_write(struct zc0301_device*, u16 address, u16 value);
  68 extern int zc0301_i2c_read(struct zc0301_device*, u16 address, u8 length);
  69
  70 /*****************************************************************************/
  71
  72 #define ZC0301_MAX_CTRLS V4L2_CID_LASTP1-V4L2_CID_BASE+10
  73 #define ZC0301_V4L2_CID_DAC_MAGNITUDE V4L2_CID_PRIVATE_BASE
  74 #define ZC0301_V4L2_CID_GREEN_BALANCE V4L2_CID_PRIVATE_BASE + 1
  75
  76 struct zc0301_sensor {
  77         char name[32];
  78
  79         struct v4l2_queryctrl qctrl[ZC0301_MAX_CTRLS];
  80         struct v4l2_cropcap cropcap;
  81         struct v4l2_pix_format pix_format;
  82
  83         int (*init)(struct zc0301_device* cam);
  84         int (*get_ctrl)(struct zc0301_device* cam,
  85                         struct v4l2_control* ctrl);
  86         int (*set_ctrl)(struct zc0301_device* cam,
  87                         const struct v4l2_control* ctrl);
  88         int (*set_crop)(struct zc0301_device* cam,
  89                         const struct v4l2_rect* rect);
  90
  91         const struct usb_device* usbdev;
  92
  93         /* Private */
  94         struct v4l2_queryctrl _qctrl[ZC0301_MAX_CTRLS];
  95         struct v4l2_rect _rect;
  96 };
  97
  98 #endif /* _ZC0301_SENSOR_H_ */