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Diffstat (limited to 'include/linux/platform_data/tsl2772.h')
| -rw-r--r-- | include/linux/platform_data/tsl2772.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/include/linux/platform_data/tsl2772.h b/include/linux/platform_data/tsl2772.h new file mode 100644 index 000000000..f8ade15a3 --- /dev/null +++ b/include/linux/platform_data/tsl2772.h @@ -0,0 +1,101 @@ +/* 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 */ |