| /* 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 */ |
