LXR linux/include/linux/platform

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * This file is part of the APDS990x sensor driver.
   4 * Chip is combined proximity and ambient light sensor.
   5 *
   6 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
   7 *
   8 * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
   9 */
  10
  11#ifndef __APDS990X_H__
  12#define __APDS990X_H__
  13
  14
  15#define APDS_IRLED_CURR_12mA    0x3
  16#define APDS_IRLED_CURR_25mA    0x2
  17#define APDS_IRLED_CURR_50mA    0x1
  18#define APDS_IRLED_CURR_100mA   0x0
  19
  20/**
  21 * struct apds990x_chip_factors - defines effect of the cover window
  22 * @ga: Total glass attenuation
  23 * @cf1: clear channel factor 1 for raw to lux conversion
  24 * @irf1: IR channel factor 1 for raw to lux conversion
  25 * @cf2: clear channel factor 2 for raw to lux conversion
  26 * @irf2: IR channel factor 2 for raw to lux conversion
  27 * @df: device factor for conversion formulas
  28 *
  29 * Structure for tuning ALS calculation to match with environment.
  30 * Values depend on the material above the sensor and the sensor
  31 * itself. If the GA is zero, driver will use uncovered sensor default values
  32 * format: decimal value * APDS_PARAM_SCALE except df which is plain integer.
  33 */
  34#define APDS_PARAM_SCALE 4096
  35struct apds990x_chip_factors {
  36        int ga;
  37        int cf1;
  38        int irf1;
  39        int cf2;
  40        int irf2;
  41        int df;
  42};
  43
  44/**
  45 * struct apds990x_platform_data - platform data for apsd990x.c driver
  46 * @cf: chip factor data
  47 * @pddrive: IR-led driving current
  48 * @ppcount: number of IR pulses used for proximity estimation
  49 * @setup_resources: interrupt line setup call back function
  50 * @release_resources: interrupt line release call back function
  51 *
  52 * Proximity detection result depends heavily on correct ppcount, pdrive
  53 * and cover window.
  54 *
  55 */
  56
  57struct apds990x_platform_data {
  58        struct apds990x_chip_factors cf;
  59        u8     pdrive;
  60        u8     ppcount;
  61        int    (*setup_resources)(void);
  62        int    (*release_resources)(void);
  63};
  64
  65#endif
  66