LXR linux/include/linux/platform

   1/*
   2 * This file is part of the APDS990x 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 __APDS990X_H__
  26#define __APDS990X_H__
  27
  28
  29#define APDS_IRLED_CURR_12mA    0x3
  30#define APDS_IRLED_CURR_25mA    0x2
  31#define APDS_IRLED_CURR_50mA    0x1
  32#define APDS_IRLED_CURR_100mA   0x0
  33
  34/**
  35 * struct apds990x_chip_factors - defines effect of the cover window
  36 * @ga: Total glass attenuation
  37 * @cf1: clear channel factor 1 for raw to lux conversion
  38 * @irf1: IR channel factor 1 for raw to lux conversion
  39 * @cf2: clear channel factor 2 for raw to lux conversion
  40 * @irf2: IR channel factor 2 for raw to lux conversion
  41 * @df: device factor for conversion formulas
  42 *
  43 * Structure for tuning ALS calculation to match with environment.
  44 * Values depend on the material above the sensor and the sensor
  45 * itself. If the GA is zero, driver will use uncovered sensor default values
  46 * format: decimal value * APDS_PARAM_SCALE except df which is plain integer.
  47 */
  48#define APDS_PARAM_SCALE 4096
  49struct apds990x_chip_factors {
  50        int ga;
  51        int cf1;
  52        int irf1;
  53        int cf2;
  54        int irf2;
  55        int df;
  56};
  57
  58/**
  59 * struct apds990x_platform_data - platform data for apsd990x.c driver
  60 * @cf: chip factor data
  61 * @pddrive: IR-led driving current
  62 * @ppcount: number of IR pulses used for proximity estimation
  63 * @setup_resources: interrupt line setup call back function
  64 * @release_resources: interrupt line release call back function
  65 *
  66 * Proximity detection result depends heavily on correct ppcount, pdrive
  67 * and cover window.
  68 *
  69 */
  70
  71struct apds990x_platform_data {
  72        struct apds990x_chip_factors cf;
  73        u8     pdrive;
  74        u8     ppcount;
  75        int    (*setup_resources)(void);
  76        int    (*release_resources)(void);
  77};
  78
  79#endif
  80