92b1f84d46
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>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
|
|
* 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
|