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tsl2772.h
/* SPDX-License-Identifier: GPL-2.0+ */ /* * Device driver for monitoring ambient light intensity (lux) * and proximity (prox) within the TAOS TSL2772 family of devices. * * Copyright (c) 2012, TAOS Corporation. * Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org> */ #ifndef __TSL2772_H #define __TSL2772_H struct tsl2772_lux { unsigned int ch0; unsigned int ch1; }; /* Max number of segments allowable in LUX table */ #define TSL2772_MAX_LUX_TABLE_SIZE 6 /* The default LUX tables all have 3 elements. */ #define TSL2772_DEF_LUX_TABLE_SZ 3 #define TSL2772_DEFAULT_TABLE_BYTES (sizeof(struct tsl2772_lux) * \ TSL2772_DEF_LUX_TABLE_SZ) /* Proximity diode to use */ #define TSL2772_DIODE0 0x01 #define TSL2772_DIODE1 0x02 #define TSL2772_DIODE_BOTH 0x03 /* LED Power */ #define TSL2772_100_mA 0x00 #define TSL2772_50_mA 0x01 #define TSL2772_25_mA 0x02 #define TSL2772_13_mA 0x03 /** * struct tsl2772_settings - Settings for the tsl2772 driver * @als_time: Integration time of the ALS channel ADCs in 2.73 ms * increments. Total integration time is * (256 - als_time) * 2.73. * @als_gain: Index into the tsl2772_als_gain array. * @als_gain_trim: Default gain trim to account for aperture effects. * @wait_time: Time between proximity and ALS cycles in 2.73 * periods. * @prox_time: Integration time of the proximity ADC in 2.73 ms * increments. Total integration time is * (256 - prx_time) * 2.73. * @prox_gain: Index into the tsl2772_prx_gain array. * @als_prox_config: The value of the ALS / Proximity configuration * register. * @als_cal_target: Known external ALS reading for calibration. * @als_persistence: H/W Filters, Number of 'out of limits' ALS readings. * @als_interrupt_en: Enable/Disable ALS interrupts * @als_thresh_low: CH0 'low' count to trigger interrupt. * @als_thresh_high: CH0 'high' count to trigger interrupt. * @prox_persistence: H/W Filters, Number of 'out of limits' proximity * readings. * @prox_interrupt_en: Enable/Disable proximity interrupts. * @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: The number of samples that are taken when performing * a proximity calibration. * @prox_diode Which diode(s) to use for driving the external * LED(s) for proximity sensing. * @prox_power The amount of power to use for the external LED(s). */ struct tsl2772_settings { int als_time; int als_gain; int als_gain_trim; int wait_time; int prox_time; int prox_gain; int als_prox_config; int als_cal_target; u8 als_persistence; bool als_interrupt_en; int als_thresh_low; int als_thresh_high; u8 prox_persistence; bool prox_interrupt_en; int prox_thres_low; int prox_thres_high; int prox_pulse_count; int prox_max_samples_cal; int prox_diode; int prox_power; }; /** * struct tsl2772_platform_data - Platform callback, glass and defaults * @platform_lux_table: Device specific glass coefficents * @platform_default_settings: Device specific power on defaults */ struct tsl2772_platform_data { struct tsl2772_lux platform_lux_table[TSL2772_MAX_LUX_TABLE_SIZE]; struct tsl2772_settings *platform_default_settings; }; #endif /* __TSL2772_H */
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