| /* 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 */ |