include/linux/i2c/bh1770glc.h

   1 /*
   2  * This file is part of the ROHM BH1770GLC / OSRAM SFH7770 sensor driver.
   3  * Chip is combined proximity and ambient light sensor.
   4  *
   5  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
   6  *
   7  * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #ifndef __BH1770_H__
  26 #define __BH1770_H__
  27
  28 /**
  29  * struct bh1770_platform_data - platform data for bh1770glc driver
  30  * @led_def_curr: IR led driving current.
  31  * @glass_attenuation: Attenuation factor for covering window.
  32  * @setup_resources: Call back for interrupt line setup function
  33  * @release_resources: Call back for interrupte line release function
  34  *
  35  * Example of glass attenuation: 16384 * 385 / 100 means attenuation factor
  36  * of 3.85. i.e. light_above_sensor = light_above_cover_window / 3.85
  37  */
  38
  39 struct bh1770_platform_data {
  40 #define BH1770_LED_5mA  0
  41 #define BH1770_LED_10mA 1
  42 #define BH1770_LED_20mA 2
  43 #define BH1770_LED_50mA 3
  44 #define BH1770_LED_100mA 4
  45 #define BH1770_LED_150mA 5
  46 #define BH1770_LED_200mA 6
  47         __u8 led_def_curr;
  48 #define BH1770_NEUTRAL_GA 16384 /* 16384 / 16384 = 1 */
  49         __u32 glass_attenuation;
  50         int (*setup_resources)(void);
  51         int (*release_resources)(void);
  52 };
  53 #endif