diff options
Diffstat (limited to 'drivers/staging/iio/light/tsl2x7x.h')
| -rwxr-xr-x | drivers/staging/iio/light/tsl2x7x.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/staging/iio/light/tsl2x7x.h b/drivers/staging/iio/light/tsl2x7x.h new file mode 100755 index 000000000000..c4acf5ff1794 --- /dev/null +++ b/drivers/staging/iio/light/tsl2x7x.h @@ -0,0 +1,100 @@ +/* + * 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 */ |