text: /*
   * This file is part of the APDS990x sensor driver.
   * Chip is combined proximity and ambient light sensor.
   *
   * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
   *
   * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * version 2 as published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA
   *
   */
  
  #ifndef __APDS990X_H__
  #define __APDS990X_H__
  
  
  #define APDS_IRLED_CURR_12mA	0x3
  #define APDS_IRLED_CURR_25mA	0x2
  #define APDS_IRLED_CURR_50mA	0x1
  #define APDS_IRLED_CURR_100mA	0x0
  
  /**
   * struct apds990x_chip_factors - defines effect of the cover window
   * @ga: Total glass attenuation
   * @cf1: clear channel factor 1 for raw to lux conversion
   * @irf1: IR channel factor 1 for raw to lux conversion
   * @cf2: clear channel factor 2 for raw to lux conversion
   * @irf2: IR channel factor 2 for raw to lux conversion
   * @df: device factor for conversion formulas
   *
   * Structure for tuning ALS calculation to match with environment.
   * Values depend on the material above the sensor and the sensor
   * itself. If the GA is zero, driver will use uncovered sensor default values
   * format: decimal value * APDS_PARAM_SCALE except df which is plain integer.
   */
  #define APDS_PARAM_SCALE 4096
  struct apds990x_chip_factors {
  	int ga;
  	int cf1;
  	int irf1;
  	int cf2;
  	int irf2;
  	int df;
  };
  
  /**
   * struct apds990x_platform_data - platform data for apsd990x.c driver
   * @cf: chip factor data
   * @pddrive: IR-led driving current
   * @ppcount: number of IR pulses used for proximity estimation
   * @setup_resources: interrupt line setup call back function
   * @release_resources: interrupt line release call back function
   *
   * Proximity detection result depends heavily on correct ppcount, pdrive
   * and cover window.
   *
   */
  
  struct apds990x_platform_data {
  	struct apds990x_chip_factors cf;
  	u8     pdrive;
  	u8     ppcount;
  	int    (*setup_resources)(void);
  	int    (*release_resources)(void);
  };
  
  #endif
  