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This is a driver for Avago APDS990X combined ALS and proximity sensor. Interface is sysfs based. The driver uses interrupts to provide new data. The driver supports pm_runtime and regulator frameworks. See Documentation/misc-devices/apds990x.txt for details Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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* This file is part of the APDS990x sensor driver.
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* Chip is combined proximity and ambient light sensor.
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*
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* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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*
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* Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __APDS990X_H__
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#define __APDS990X_H__
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#define APDS_IRLED_CURR_12mA 0x3
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#define APDS_IRLED_CURR_25mA 0x2
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#define APDS_IRLED_CURR_50mA 0x1
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#define APDS_IRLED_CURR_100mA 0x0
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/**
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* struct apds990x_chip_factors - defines effect of the cover window
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* @ga: Total glass attenuation
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* @cf1: clear channel factor 1 for raw to lux conversion
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* @irf1: IR channel factor 1 for raw to lux conversion
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* @cf2: clear channel factor 2 for raw to lux conversion
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* @irf2: IR channel factor 2 for raw to lux conversion
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* @df: device factor for conversion formulas
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*
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* Structure for tuning ALS calculation to match with environment.
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* Values depend on the material above the sensor and the sensor
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* itself. If the GA is zero, driver will use uncovered sensor default values
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* format: decimal value * APDS_PARAM_SCALE except df which is plain integer.
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*/
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#define APDS_PARAM_SCALE 4096
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struct apds990x_chip_factors {
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int ga;
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int cf1;
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int irf1;
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int cf2;
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int irf2;
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int df;
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};
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/**
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* struct apds990x_platform_data - platform data for apsd990x.c driver
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* @cf: chip factor data
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* @pddrive: IR-led driving current
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* @ppcount: number of IR pulses used for proximity estimation
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* @setup_resources: interrupt line setup call back function
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* @release_resources: interrupt line release call back function
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*
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* Proximity detection result depends heavily on correct ppcount, pdrive
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* and cover window.
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*
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*/
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struct apds990x_platform_data {
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struct apds990x_chip_factors cf;
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u8 pdrive;
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u8 ppcount;
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int (*setup_resources)(void);
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int (*release_resources)(void);
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};
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#endif
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