| /* |
| * 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. |
| */ |
| |
| #ifndef __TSL2X7X_H |
| #define __TSL2X7X_H |
| #include <linux/pm.h> |
| |
| /* 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) |
| |
| struct iio_dev; |
| |
| struct tsl2x7x_lux { |
| unsigned int ratio; |
| unsigned int ch0; |
| unsigned int ch1; |
| }; |
| |
| /** |
| * 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; |
| }; |
| |
| /** |
| * 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; |
| }; |
| |
| #endif /* __TSL2X7X_H */ |
