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staging: iio: add TAOS tsl2x7x driver 

TAOS device driver (version 9) for the tsl/tmd 2771 and 2772 device families (inc. all variants).

Update:
Removed bonus lines.

Signed-off-by: Jon Brenner <jbrenner@taosinc.com>
Acked-by: Jonathan Cameron<jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Jon Brenner 2012-04-24 11:56:49 -05:00 committed by Greg Kroah-Hartman
parent e17b8e484d
commit 3c97c08b57
8 changed files with 2217 additions and 8 deletions
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6
drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2583 100755
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@ -0,0 +1,6 @@
What: /sys/bus/iio/devices/device[n]/in_illuminance0_calibrate
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
This property causes an internal calibration of the als gain trim
value which is later used in calculating illuminance in lux.

13
drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2x7x 100755
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@ -0,0 +1,13 @@
What: /sys/bus/iio/devices/device[n]/in_illuminance0_calibrate
KernelVersion: 3.3-rc1
Contact: linux-iio@vger.kernel.org
Description:
Causes an internal calibration of the als gain trim
value which is later used in calculating illuminance in lux.
What: /sys/bus/iio/devices/device[n]/in_proximity0_calibrate
KernelVersion: 3.3-rc1
Contact: linux-iio@vger.kernel.org
Description:
Causes a recalculation and adjustment to the
proximity_thresh_rising_value.

10
drivers/staging/iio/Documentation/sysfs-bus-iio
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@ -243,6 +243,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@ -258,6 +260,8 @@ What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@ -457,6 +461,10 @@ What: /sys/.../events/in_voltageY_raw_thresh_rising_value
What: /sys/.../events/in_voltageY_raw_thresh_falling_value
What: /sys/.../events/in_tempY_raw_thresh_rising_value
What: /sys/.../events/in_tempY_raw_thresh_falling_value
What: /sys/.../events/in_illuminance0_thresh_falling_value
what: /sys/.../events/in_illuminance0_thresh_rising_value
what: /sys/.../events/in_proximity0_thresh_falling_value
what: /sys/.../events/in_proximity0_thresh_rising_value
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
@ -556,6 +564,8 @@ What: /sys/.../events/in_tempY_thresh_falling_period
What: /sys/.../events/in_tempY_roc_rising_period
What: /sys/.../events/in_tempY_roc_falling_period
What: /sys/.../events/in_accel_x&y&z_mag_falling_period
What: /sys/.../events/in_intensity0_thresh_period
What: /sys/.../events/in_proximity0_thresh_period
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:

15
drivers/staging/iio/Documentation/sysfs-bus-iio-light
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@ -26,7 +26,7 @@ Description:
Hardware dependent list of possible values supported for the
adc_resolution of the given sensor.
What: /sys/bus/iio/devices/device[n]/illuminance0[_input|_raw]
What: /sys/bus/iio/devices/device[n]/in_illuminance0[_input|_raw]
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@ -45,7 +45,7 @@ Description:
do this calculation manually by reading the infrared sensor
value and doing the negation in sw.
What: /sys/bus/iio/devices/device[n]/proximity[_input|_raw]
What: /sys/bus/iio/devices/device[n]/in_proximity[_input|_raw]
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
@ -63,23 +63,22 @@ Description:
and if expressed in SI units, should include _input. If this
value is not in SI units, then it should include _raw.
What: /sys/bus/iio/devices/device[n]/illuminance0_target
What: /sys/bus/iio/devices/device[n]/in_illuminance0_target
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
This property gets/sets the last known external
lux measurement used in/for calibration.
What: /sys/bus/iio/devices/device[n]/illuminance0_integration_time
What: /sys/bus/iio/devices/device[n]/in_illuminance0_integration_time
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
This property gets/sets the sensors ADC analog integration time.
What: /sys/bus/iio/devices/device[n]/illuminance0_calibscale
What: /sys/bus/iio/devices/device[n]/in_illuminance0_lux_table
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
Hardware or software applied calibration scale factor assumed
to account for attenuation due to industrial design (glass
filters or aperture holes).
This property gets/sets the table of coefficients
used in calculating illuminance in lux.

8
drivers/staging/iio/light/Kconfig
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@ -42,4 +42,12 @@ config TSL2583
Provides support for the TAOS tsl2580, tsl2581 and tsl2583 devices.
Access ALS data via iio, sysfs.
config TSL2x7x
tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors"
depends on I2C
help
Support for: tsl2571, tsl2671, tmd2671, tsl2771, tmd2771, tsl2572, tsl2672,
tmd2672, tsl2772, tmd2772 devices.
Provides iio_events and direct access via sysfs.
endmenu

1
drivers/staging/iio/light/Makefile
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@ -6,3 +6,4 @@ obj-$(CONFIG_SENSORS_TSL2563) += tsl2563.o
obj-$(CONFIG_SENSORS_ISL29018) += isl29018.o
obj-$(CONFIG_SENSORS_ISL29028) += isl29028.o
obj-$(CONFIG_TSL2583) += tsl2583.o
obj-$(CONFIG_TSL2x7x) += tsl2x7x_core.o

100
drivers/staging/iio/light/tsl2x7x.h 100755
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@ -0,0 +1,100 @@
/*
* Device driver for monitoring ambient light intensity (lux)
* and proximity (prox) within the TAOS TSL2X7X family of devices.
*
* Copyright (c) 2012, TAOS Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __TSL2X7X_H
#define __TSL2X7X_H
#include <linux/pm.h>
/* Max number of segments allowable in LUX table */
#define TSL2X7X_MAX_LUX_TABLE_SIZE 9
#define MAX_DEFAULT_TABLE_BYTES (sizeof(int) * TSL2X7X_MAX_LUX_TABLE_SIZE)
struct iio_dev;
struct tsl2x7x_lux {
unsigned int ratio;
unsigned int ch0;
unsigned int ch1;
};
/**
* struct tsl2x7x_default_settings - power on defaults unless
* overridden by platform data.
* @als_time: ALS Integration time - multiple of 50mS
* @als_gain: Index into the ALS gain table.
* @als_gain_trim: default gain trim to account for
* aperture effects.
* @wait_time: Time between PRX and ALS cycles
* in 2.7 periods
* @prx_time: 5.2ms prox integration time -
* decrease in 2.7ms periods
* @prx_gain: Proximity gain index
* @prox_config: Prox configuration filters.
* @als_cal_target: Known external ALS reading for
* calibration.
* @interrupts_en: Enable/Disable - 0x00 = none, 0x10 = als,
* 0x20 = prx, 0x30 = bth
* @persistence: H/W Filters, Number of 'out of limits'
* ADC readings PRX/ALS.
* @als_thresh_low: CH0 'low' count to trigger interrupt.
* @als_thresh_high: CH0 'high' count to trigger interrupt.
* @prox_thres_low: Low threshold proximity detection.
* @prox_thres_high: High threshold proximity detection
* @prox_pulse_count: Number if proximity emitter pulses
* @prox_max_samples_cal: Used for prox cal.
*/
struct tsl2x7x_settings {
int als_time;
int als_gain;
int als_gain_trim;
int wait_time;
int prx_time;
int prox_gain;
int prox_config;
int als_cal_target;
u8 interrupts_en;
u8 persistence;
int als_thresh_low;
int als_thresh_high;
int prox_thres_low;
int prox_thres_high;
int prox_pulse_count;
int prox_max_samples_cal;
};
/**
* struct tsl2X7X_platform_data - Platform callback, glass and defaults
* @platform_power: Suspend/resume platform callback
* @power_on: Power on callback
* @power_off: Power off callback
* @platform_lux_table: Device specific glass coefficents
* @platform_default_settings: Device specific power on defaults
*
*/
struct tsl2X7X_platform_data {
int (*platform_power)(struct device *dev, pm_message_t);
int (*power_on) (struct iio_dev *indio_dev);
int (*power_off) (struct i2c_client *dev);
struct tsl2x7x_lux platform_lux_table[TSL2X7X_MAX_LUX_TABLE_SIZE];
struct tsl2x7x_settings *platform_default_settings;
};
#endif /* __TSL2X7X_H */

2072
drivers/staging/iio/light/tsl2x7x_core.c 100755
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