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Commit 92b1f84d authored by Samu Onkalo's avatar Samu Onkalo Committed by Linus Torvalds
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drivers/misc: driver for APDS990X ALS and proximity sensors 



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: default avatarSamu Onkalo <samu.p.onkalo@nokia.com>
Acked-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 190420ab

drivers/misc/Kconfig

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@@ -325,6 +325,17 @@ config SENSORS_BH1770 
           To compile this driver as a module, choose M here: the

           module will be called bh1770glc. If unsure, say N here.



config SENSORS_APDS990X

	 tristate "APDS990X combined als and proximity sensors"

	 depends on I2C

	 default n

	 ---help---

	   Say Y here if you want to build a driver for Avago APDS990x

	   combined ambient light and proximity sensor chip.



	   To compile this driver as a module, choose M here: the

	   module will be called apds990x. If unsure, say N here.



config HMC6352

	tristate "Honeywell HMC6352 compass"

	depends on I2C

drivers/misc/Makefile

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@@ -17,6 +17,7 @@ obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o 
obj-$(CONFIG_PHANTOM)		+= phantom.o

obj-$(CONFIG_SENSORS_BH1780)	+= bh1780gli.o

obj-$(CONFIG_SENSORS_BH1770)	+= bh1770glc.o

obj-$(CONFIG_SENSORS_APDS990X)	+= apds990x.o

obj-$(CONFIG_SGI_IOC4)		+= ioc4.o

obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o

obj-$(CONFIG_KGDB_TESTS)	+= kgdbts.o

drivers/misc/apds990x.c

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File added.

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include/linux/i2c/apds990x.h

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/*

 * 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