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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>
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Jon Brenner
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Apr 24, 2012
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drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2583
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| 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. |
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drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2x7x
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| 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. | ||
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| 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. |
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| /* | ||
| * 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. | ||
| */ | ||
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| #ifndef __TSL2X7X_H | ||
| #define __TSL2X7X_H | ||
| #include <linux/pm.h> | ||
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| /* 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) | ||
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| struct iio_dev; | ||
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| struct tsl2x7x_lux { | ||
| unsigned int ratio; | ||
| unsigned int ch0; | ||
| unsigned int ch1; | ||
| }; | ||
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| /** | ||
| * 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; | ||
| }; | ||
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| /** | ||
| * 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; | ||
| }; | ||
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| #endif /* __TSL2X7X_H */ |
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