TAOS device driver (version 5) for the tsl/tmd 2771 and 2772 device families (inc. all variants). Signed-off-by: Jon Brenner <jbrenner@xxxxxxxxxxx> --- .../light/sysfs-bus-iio-light-tsl2583 | 6 + .../light/sysfs-bus-iio-light-tsl2x7x | 14 + drivers/staging/iio/Documentation/sysfs-bus-iio | 7 + .../staging/iio/Documentation/sysfs-bus-iio-light | 8 +- .../iio/Documentation/sysfs-bus-iio-light-tsl2583 | 20 - drivers/staging/iio/light/Kconfig | 8 + drivers/staging/iio/light/Makefile | 2 + drivers/staging/iio/light/tsl2x7x.h | 99 ++ drivers/staging/iio/light/tsl2x7x_core.c | 1830 ++++++++++++++++++++ 9 files changed, 1970 insertions(+), 24 deletions(-) diff --git a/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2583 b/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2583 new file mode 100644 index 0000000..8f2a038 --- /dev/null +++ b/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2583 @@ -0,0 +1,6 @@ +What: /sys/bus/iio/devices/device[n]/illuminance0_calibrate +KernelVersion: 2.6.37 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + This property causes an internal calibration of the als gain trim + value which is later used in calculating illuminance in lux. diff --git a/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2x7x b/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2x7x new file mode 100644 index 0000000..275ae54 --- /dev/null +++ b/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2x7x @@ -0,0 +1,14 @@ +What: /sys/bus/iio/devices/device[n]/illuminance0_calibrate +KernelVersion: 2.6.37 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + This property causes an internal calibration of the als gain trim + value which is later used in calculating illuminance in lux. + +What: /sys/bus/iio/devices/device[n]/proximity_calibrate +KernelVersion: 3.3-rc1 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + Causes an recalculation and adjustment to the + proximity_thresh_rising_value. + diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio b/drivers/staging/iio/Documentation/sysfs-bus-iio index 46a995d..5b2b5d3 100644 --- a/drivers/staging/iio/Documentation/sysfs-bus-iio +++ b/drivers/staging/iio/Documentation/sysfs-bus-iio @@ -258,6 +258,8 @@ What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale +what /sys/bus/iio/devices/iio:deviceX/illuminance0_calibscale +what /sys/bus/iio/devices/iio:deviceX/proximity_calibscale KernelVersion: 2.6.35 Contact: linux-iio@xxxxxxxxxxxxxxx Description: @@ -457,6 +459,10 @@ What: /sys/.../events/in_voltageY_raw_thresh_falling_value What: /sys/.../events/in_voltageY_raw_thresh_falling_value What: /sys/.../events/in_tempY_raw_thresh_falling_value What: /sys/.../events/in_tempY_raw_thresh_falling_value +What: /sys/.../events/illuminance0_thresh_falling_value +what: /sys/.../events/illuminance0_thresh_rising_value +what: /sys/.../events/proximity_thresh_falling_value +what: /sys/.../events/proximity_thresh_rising_value KernelVersion: 2.6.37 Contact: linux-iio@xxxxxxxxxxxxxxx Description: @@ -739,3 +745,4 @@ Description: system. To minimize the current consumption of the system, the bridge can be disconnected (when it is not being used using the bridge_switch_en attribute. + diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-light b/drivers/staging/iio/Documentation/sysfs-bus-iio-light index edbf470..4385c70 100644 --- a/drivers/staging/iio/Documentation/sysfs-bus-iio-light +++ b/drivers/staging/iio/Documentation/sysfs-bus-iio-light @@ -76,10 +76,10 @@ Contact: linux-iio@xxxxxxxxxxxxxxx Description: This property gets/sets the sensors ADC analog integration time. -What: /sys/bus/iio/devices/device[n]/illuminance0_calibscale +What: /sys/bus/iio/devices/device[n]/lux_table KernelVersion: 2.6.37 Contact: linux-iio@xxxxxxxxxxxxxxx Description: - Hardware or software applied calibration scale factor assumed - to account for attenuation due to industrial design (glass - filters or aperture holes). + This property gets/sets the table of coefficients + used in calculating illuminance in lux. + diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-light-tsl2583 b/drivers/staging/iio/Documentation/sysfs-bus-iio-light-tsl2583 deleted file mode 100644 index 660781d..0000000 --- a/drivers/staging/iio/Documentation/sysfs-bus-iio-light-tsl2583 +++ /dev/null @@ -1,20 +0,0 @@ -What: /sys/bus/iio/devices/device[n]/lux_table -KernelVersion: 2.6.37 -Contact: linux-iio@xxxxxxxxxxxxxxx -Description: - This property gets/sets the table of coefficients - used in calculating illuminance in lux. - -What: /sys/bus/iio/devices/device[n]/illuminance0_calibrate -KernelVersion: 2.6.37 -Contact: linux-iio@xxxxxxxxxxxxxxx -Description: - This property causes an internal calibration of the als gain trim - value which is later used in calculating illuminance in lux. - -What: /sys/bus/iio/devices/device[n]/illuminance0_input_target -KernelVersion: 2.6.37 -Contact: linux-iio@xxxxxxxxxxxxxxx -Description: - This property is the known externally illuminance (in lux). - It is used in the process of calibrating the device accuracy. diff --git a/drivers/staging/iio/light/Kconfig b/drivers/staging/iio/light/Kconfig index e7e9159..976f790 100644 --- a/drivers/staging/iio/light/Kconfig +++ b/drivers/staging/iio/light/Kconfig @@ -31,4 +31,12 @@ config TSL2583 Provides support for the TAOS tsl2580, tsl2581 and tsl2583 devices. Access ALS data via iio, sysfs. +config TSL2x7x + tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors" + depends on I2C + help + Support for: tsl2571, tsl2671, tmd2671, tsl2771, tmd2771, tsl2572, tsl2672, + tmd2672, tsl2772, tmd2772 devices. + Provides iio_events and direct access via sysfs. + endmenu diff --git a/drivers/staging/iio/light/Makefile b/drivers/staging/iio/light/Makefile index 3011fbf..0b8fb22 100644 --- a/drivers/staging/iio/light/Makefile +++ b/drivers/staging/iio/light/Makefile @@ -5,3 +5,5 @@ obj-$(CONFIG_SENSORS_TSL2563) += tsl2563.o obj-$(CONFIG_SENSORS_ISL29018) += isl29018.o obj-$(CONFIG_TSL2583) += tsl2583.o +obj-$(CONFIG_TSL2x7x) += tsl2x7x_core.o +obj-$(CONFIG_TCS3x7x) += tcs3x7x_core.o diff --git a/drivers/staging/iio/light/tsl2x7x.h b/drivers/staging/iio/light/tsl2x7x.h new file mode 100644 index 0000000..fe9e853 --- /dev/null +++ b/drivers/staging/iio/light/tsl2x7x.h @@ -0,0 +1,99 @@ +/* + * 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. + * @prx_time: 5.2ms prox integration time - + * dec in 2.7ms periods + * @wait_time: Time between PRX and ALS cycles + * in 2.7 periods + * @prox_config: Prox configuration filters. + * @als_gain_trim: default gain trim to account for + * aperture effects. + * @als_cal_target: Known external ALS reading for + * calibration. + * @als_thresh_low: CH0 'low' count to trigger interrupt. + * @als_thresh_high: CH0 'high' count to trigger interrupt. + * @persistence: H/W Filters, Number of 'out of limits' + * ADC readings PRX/ALS. + * @interrupts_en: Enable/Disable - 0x00 = none, 0x10 = als, + * 0x20 = prx, 0x30 = bth + * @prox_thres_low: Low threshold proximity detection. + * @prox_thres_high: High threshold proximity detection + * @prox_max_samples_cal: Used for prox cal. + * @prox_pulse_count: Number if proximity emitter pulses + */ +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 + * Platform PM functions. + */ +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 */ diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c new file mode 100644 index 0000000..267faab --- /dev/null +++ b/drivers/staging/iio/light/tsl2x7x_core.c @@ -0,0 +1,1830 @@ +/* + * Device driver for monitoring ambient light intensity in (lux) + * and proximity detection (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. + */ + +#include <linux/kernel.h> +#include <linux/i2c.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/interrupt.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/version.h> +#include "tsl2x7x.h" +#include "../events.h" +#include "../iio.h" +#include "../sysfs.h" + +/* Cal defs*/ +#define PROX_STAT_CAL 0 +#define PROX_STAT_SAMP 1 +#define MAX_SAMPLES_CAL 200 + +/* TSL2X7X Device ID */ +#define TRITON_ID 0x00 +#define SWORDFISH_ID 0x30 +#define HALIBUT_ID 0x20 + +/* Lux calculation constants */ +#define TSL2X7X_LUX_CALC_OVER_FLOW 65535 + +/* TAOS Register definitions - note: + * depending on device, some of these register are not used and the + * register address is benign. + */ +/* 2X7X register offsets */ +#define TSL2X7X_MAX_CONFIG_REG 16 + +/* Device Registers and Masks */ +#define TSL2X7X_CNTRL 0x00 +#define TSL2X7X_ALS_TIME 0X01 +#define TSL2X7X_PRX_TIME 0x02 +#define TSL2X7X_WAIT_TIME 0x03 +#define TSL2X7X_ALS_MINTHRESHLO 0X04 +#define TSL2X7X_ALS_MINTHRESHHI 0X05 +#define TSL2X7X_ALS_MAXTHRESHLO 0X06 +#define TSL2X7X_ALS_MAXTHRESHHI 0X07 +#define TSL2X7X_PRX_MINTHRESHLO 0X08 +#define TSL2X7X_PRX_MINTHRESHHI 0X09 +#define TSL2X7X_PRX_MAXTHRESHLO 0X0A +#define TSL2X7X_PRX_MAXTHRESHHI 0X0B +#define TSL2X7X_PERSISTENCE 0x0C +#define TSL2X7X_PRX_CONFIG 0x0D +#define TSL2X7X_PRX_COUNT 0x0E +#define TSL2X7X_GAIN 0x0F +#define TSL2X7X_NOTUSED 0x10 +#define TSL2X7X_REVID 0x11 +#define TSL2X7X_CHIPID 0x12 +#define TSL2X7X_STATUS 0x13 +#define TSL2X7X_ALS_CHAN0LO 0x14 +#define TSL2X7X_ALS_CHAN0HI 0x15 +#define TSL2X7X_ALS_CHAN1LO 0x16 +#define TSL2X7X_ALS_CHAN1HI 0x17 +#define TSL2X7X_PRX_LO 0x18 +#define TSL2X7X_PRX_HI 0x19 + +/* tsl2X7X cmd reg masks */ +#define TSL2X7X_CMD_REG 0x80 +#define TSL2X7X_CMD_SPL_FN 0x60 + +#define TSL2X7X_CMD_PROX_INT_CLR 0X05 +#define TSL2X7X_CMD_ALS_INT_CLR 0x06 +#define TSL2X7X_CMD_PROXALS_INT_CLR 0X07 + +/* tsl2X7X cntrl reg masks */ +#define TSL2X7X_CNTL_ADC_ENBL 0x02 +#define TSL2X7X_CNTL_PWR_ON 0x01 + +/* tsl2X7X status reg masks */ +#define TSL2X7X_STA_ADC_VALID 0x01 +#define TSL2X7X_STA_PRX_VALID 0x02 +#define TSL2X7X_STA_ADC_PRX_VALID 0x03 +#define TSL2X7X_STA_ALS_INTR 0x10 +#define TSL2X7X_STA_ADC_INTR 0x10 +#define TSL2X7X_STA_PRX_INTR 0x20 + +#define TSL2X7X_STA_ADC_INTR 0x10 + +/* tsl2X7X cntrl reg masks */ +#define TSL2X7X_CNTL_REG_CLEAR 0x00 +#define TSL2X7X_CNTL_PROX_INT_ENBL 0X20 +#define TSL2X7X_CNTL_ALS_INT_ENBL 0X10 +#define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08 +#define TSL2X7X_CNTL_PROX_DET_ENBL 0X04 +#define TSL2X7X_CNTL_PWRON 0x01 +#define TSL2X7X_CNTL_ALSPON_ENBL 0x03 +#define TSL2X7X_CNTL_INTALSPON_ENBL 0x13 +#define TSL2X7X_CNTL_PROXPON_ENBL 0x0F +#define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F + +/*Prox diode to use */ +#define TSL2X7X_DIODE0 0x10 +#define TSL2X7X_DIODE1 0x20 +#define TSL2X7X_DIODE_BOTH 0x30 + +/* LED Power */ +#define TSL2X7X_mA100 0x00 +#define TSL2X7X_mA50 0x40 +#define TSL2X7X_mA25 0x80 +#define TSL2X7X_mA13 0xD0 + +/*Common device IIO EventMask */ +#define TSL2X7X_EVENT_MASK \ + (IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | \ + IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)), + +/* TAOS txx2x7x Device family members */ +enum { + tsl2571, + tsl2671, + tmd2671, + tsl2771, + tmd2771, + tsl2572, + tsl2672, + tmd2672, + tsl2772, + tmd2772 +}; + +enum { + TSL2X7X_CHIP_UNKNOWN = 0, + TSL2X7X_CHIP_WORKING = 1, + TSL2X7X_CHIP_SUSPENDED = 2 +}; + +/* Per-device data */ +struct tsl2x7x_als_info { + u16 als_ch0; + u16 als_ch1; + u16 lux; +}; + +struct prox_stat { + u16 min; + u16 max; + u16 mean; + unsigned long stddev; +}; + +struct tsl2x7x_chip_info { + int chan_table_elements; + struct iio_chan_spec channel[9]; + const struct iio_info *info; +}; + +struct tsl2X7X_chip { + kernel_ulong_t id; + struct mutex prox_mutex; + struct mutex als_mutex; + struct i2c_client *client; + u16 prox_data; + struct tsl2x7x_als_info als_cur_info; + struct tsl2x7x_settings tsl2x7x_settings; + struct tsl2X7X_platform_data *pdata; + int als_time_scale; + int als_saturation; + int tsl2x7x_chip_status; + u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG]; + const struct tsl2x7x_chip_info *chip_info; + const struct iio_info *info; + s64 event_timestamp; + /* This structure is intentionally large to accommodate + * updates via sysfs. */ + /* Sized to 9 = max 8 segments + 1 termination segment */ + struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE]; +}; + +/* Different devices require different coefficents */ +static const struct tsl2x7x_lux tsl2x71_lux_table[] = { + { 14461, 611, 1211 }, + { 18540, 352, 623 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux tmd2x71_lux_table[] = { + { 11635, 115, 256 }, + { 15536, 87, 179 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux tsl2x72_lux_table[] = { + { 14013, 466, 917 }, + { 18222, 310, 552 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux tmd2x72_lux_table[] = { + { 13218, 130, 262 }, + { 17592, 92, 169 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = { + [tsl2571] = tsl2x71_lux_table, + [tsl2671] = tsl2x71_lux_table, + [tmd2671] = tmd2x71_lux_table, + [tsl2771] = tsl2x71_lux_table, + [tmd2771] = tmd2x71_lux_table, + [tsl2572] = tsl2x72_lux_table, + [tsl2672] = tsl2x72_lux_table, + [tmd2672] = tmd2x72_lux_table, + [tsl2772] = tsl2x72_lux_table, + [tmd2772] = tmd2x72_lux_table, +}; + +static const struct tsl2x7x_settings tsl2x7x_default_settings = { + .als_time = 200, + .als_gain = 0, + .prx_time = 0xfe, /*5.4 mS */ + .prox_gain = 1, + .wait_time = 245, + .prox_config = 0, + .als_gain_trim = 1000, + .als_cal_target = 150, + .als_thresh_low = 200, + .als_thresh_high = 256, + .persistence = 0xFF, + .interrupts_en = 0x00, + .prox_thres_low = 0, + .prox_thres_high = 512, + .prox_max_samples_cal = 30, + .prox_pulse_count = 8 +}; + +static const s16 tsl2X7X_als_gainadj[] = { + 1, + 8, + 16, + 120 +}; + +static const s16 tsl2X7X_prx_gainadj[] = { + 1, + 2, + 4, + 8 +}; + +/* Channel variations */ +enum { + ALS, + PRX, + ALSPRX, + PRX2, + ALSPRX2, +}; + +const u8 device_channel_config[] = { + ALS, + PRX, + PRX, + ALSPRX, + ALSPRX, + ALS, + PRX2, + PRX2, + ALSPRX2, + ALSPRX2 +}; + +/* + * Read a number of bytes starting at register (reg) location. + * Return 0, or i2c_smbus_write_byte ERROR code. + */ +static int +tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val) +{ + int ret; + + /* select register to write */ + ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg)); + if (ret < 0) { + dev_err(&client->dev, "%s: failed to write register %x\n" + , __func__, reg); + return ret; + } + /* read the data */ + *val = i2c_smbus_read_byte(client); + + return 0; +} + +/** + * tsl2x7x_get_lux() - Reads and calculates current lux value. + * @indio_dev: IIO device + * + * The raw ch0 and ch1 values of the ambient light sensed in the last + * integration cycle are read from the device. + * Time scale factor array values are adjusted based on the integration time. + * The raw values are multiplied by a scale factor, and device gain is obtained + * using gain index. Limit checks are done next, then the ratio of a multiple + * of ch1 value, to the ch0 value, is calculated. Array tsl2x7x_device_lux[] + * is then scanned to find the first ratio value that is just above the ratio + * we just calculated. The ch0 and ch1 multiplier constants in the array are + * then used along with the time scale factor array values, to calculate the + * lux. + */ +static int tsl2x7x_get_lux(struct iio_dev *indio_dev) +{ + u16 ch0, ch1; /* separated ch0/ch1 data from device */ + u32 lux; /* raw lux calculated from device data */ + u64 lux64; + u32 ratio; + u8 buf[4]; + struct tsl2x7x_lux *p; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int i, ret; + u32 ch0lux = 0; + u32 ch1lux = 0; + + if (mutex_trylock(&chip->als_mutex) == 0) { + dev_info(&chip->client->dev, "tsl2x7x_get_lux device is busy\n"); + return chip->als_cur_info.lux; /* busy, so return LAST VALUE */ + } + + if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) { + /* device is not enabled */ + dev_err(&chip->client->dev, "%s: device is not enabled\n", + __func__); + ret = -EBUSY ; + goto out_unlock; + } + + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed to read CMD_REG\n", __func__); + goto out_unlock; + } + /* is data new & valid */ + if (!(buf[0] & TSL2X7X_STA_ADC_VALID)) { + dev_err(&chip->client->dev, + "%s: data not valid yet\n", __func__); + ret = chip->als_cur_info.lux; /* return LAST VALUE */ + goto out_unlock; + } + + for (i = 0; i < 4; i++) { + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | (TSL2X7X_ALS_CHAN0LO + i)), + &buf[i]); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed to read. err=%x\n", __func__, ret); + goto out_unlock; + } + } + + /* clear status, really interrupt status ( are off), + but we use the bit anyway */ + ret = i2c_smbus_write_byte(chip->client, + (TSL2X7X_CMD_REG | + TSL2X7X_CMD_SPL_FN | + TSL2X7X_CMD_ALS_INT_CLR)); + + if (ret < 0) { + dev_err(&chip->client->dev, + "i2c_write_command failed in %s, err = %d\n", + __func__, ret); + goto out_unlock; /* have no data, so return failure */ + } + + /* extract ALS/lux data */ + ch0 = le16_to_cpup((const __le16 *)&buf[0]); + ch1 = le16_to_cpup((const __le16 *)&buf[2]); + + chip->als_cur_info.als_ch0 = ch0; + chip->als_cur_info.als_ch1 = ch1; + + if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) { + lux = TSL2X7X_LUX_CALC_OVER_FLOW; + goto return_max; + } + + if (ch0 == 0) { + /* have no data, so return LAST VALUE */ + ret = chip->als_cur_info.lux = 0; + goto out_unlock; + } + /* calculate ratio */ + ratio = (ch1 << 15) / ch0; + /* convert to unscaled lux using the pointer to the table */ + p = (struct tsl2x7x_lux *) chip->tsl2x7x_device_lux; + while (p->ratio != 0 && p->ratio < ratio) + p++; + + if (p->ratio == 0) { + lux = 0; + } else { + ch0lux = DIV_ROUND_UP((ch0 * p->ch0), + tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); + ch1lux = DIV_ROUND_UP((ch1 * p->ch1), + tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); + lux = ch0lux - ch1lux; + } + + /* note: lux is 31 bit max at this point */ + if (ch1lux > ch0lux) { + dev_dbg(&chip->client->dev, "Returning last value\n"); + ret = chip->als_cur_info.lux; + goto out_unlock; + } + + /* adjust for active time scale */ + if (chip->als_time_scale == 0) + lux = 0; + else + lux = (lux + (chip->als_time_scale >> 1)) / + chip->als_time_scale; + + /* adjust for active gain scale + * The tsl2x7x_device_lux tables have a factor of 256 built-in. + * User-specified gain provides a multiplier. + * Apply user-specified gain before shifting right to retain precision. + * Use 64 bits to avoid overflow on multiplication. + * Then go back to 32 bits before division to avoid using div_u64(). + */ + lux64 = lux; + lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim; + lux64 >>= 8; + lux = lux64; + lux = (lux + 500) / 1000; + + if (lux > TSL2X7X_LUX_CALC_OVER_FLOW) /* check for overflow */ + lux = TSL2X7X_LUX_CALC_OVER_FLOW; + + /* Update the structure with the latest lux. */ +return_max: + chip->als_cur_info.lux = lux; + ret = lux; + +out_unlock: + mutex_unlock(&chip->als_mutex); + + return ret; +} + +/* Proximity poll function */ +static int tsl2x7x_prox_poll(struct iio_dev *indio_dev) +{ + int i; + int ret; + u8 status; + u8 chdata[2]; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (mutex_trylock(&chip->prox_mutex) == 0) { + dev_err(&chip->client->dev, + "%s: Can't get prox mutex\n", __func__); + return -EBUSY; + } + + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: i2c err=%d\n", __func__, ret); + goto prox_poll_err; + } + + if (chip->id < tsl2572) { + if (!(status & TSL2X7X_STA_ADC_VALID)) + goto prox_poll_err; + } else if (!(status & TSL2X7X_STA_PRX_VALID)) + goto prox_poll_err; + + for (i = 0; i < 2; i++) { + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | + (TSL2X7X_PRX_LO + i)), &chdata[i]); + if (ret < 0) + goto prox_poll_err; + } + + chip->prox_data = + le16_to_cpup((const __le16 *)&chdata[0]); + +prox_poll_err: + + mutex_unlock(&chip->prox_mutex); + return chip->prox_data; +} + +/* + * Provides initial operational parameter defaults. + * These defaults may be changed through the device's sysfs files. + */ +static void tsl2x7x_defaults(struct tsl2X7X_chip *chip) +{ + /* If Operational settings defined elsewhere.. */ + if (chip->pdata && chip->pdata->platform_default_settings != 0) + memcpy(&(chip->tsl2x7x_settings), + chip->pdata->platform_default_settings, + sizeof(tsl2x7x_default_settings)); + else + memcpy(&(chip->tsl2x7x_settings), + &tsl2x7x_default_settings, + sizeof(tsl2x7x_default_settings)); + + /* Load up the proper lux table. */ + if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0) + memcpy(chip->tsl2x7x_device_lux, + chip->pdata->platform_lux_table, + sizeof(chip->pdata->platform_lux_table)); + else + memcpy(chip->tsl2x7x_device_lux, + (struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id], + MAX_DEFAULT_TABLE_BYTES); + +} + +/* + * Obtain single reading and calculate the als_gain_trim + * (later used to derive actual lux). + * Return updated gain_trim value. + */ +static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + u8 reg_val; + int gain_trim_val; + int ret; + int lux_val; + + ret = i2c_smbus_write_byte(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed to write CNTRL register, ret=%d\n", + __func__, ret); + return ret; + } + + reg_val = i2c_smbus_read_byte(chip->client); + if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) + != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) { + dev_err(&chip->client->dev, + "%s: failed: ADC not enabled\n", __func__); + return -1; + } + + ret = i2c_smbus_write_byte(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed to write ctrl reg: ret=%d\n", + __func__, ret); + return ret; + } + + reg_val = i2c_smbus_read_byte(chip->client); + if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) { + dev_err(&chip->client->dev, + "%s: failed: STATUS - ADC not valid.\n", __func__); + return -ENODATA; + } + + lux_val = tsl2x7x_get_lux(indio_dev); + if (lux_val < 0) { + dev_err(&chip->client->dev, + "%s: failed to get lux\n", __func__); + return lux_val; + } + + gain_trim_val = (((chip->tsl2x7x_settings.als_cal_target) + * chip->tsl2x7x_settings.als_gain_trim) / lux_val); + if ((gain_trim_val < 250) || (gain_trim_val > 4000)) + return -ERANGE; + + chip->tsl2x7x_settings.als_gain_trim = gain_trim_val; + dev_info(&chip->client->dev, + "%s als_calibrate completed\n", chip->client->name); + + return (int) gain_trim_val; +} + +/* + * Turn the device on. + * Configuration must be set before calling this function. + */ +static int tsl2x7x_chip_on(struct iio_dev *indio_dev) +{ + int i; + int ret = 0; + u8 *dev_reg; + u8 utmp; + int als_count; + int als_time; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + u8 reg_val = 0; + + if (chip->pdata && chip->pdata->power_on) + chip->pdata->power_on(indio_dev); + + /* Non calculated parameters */ + chip->tsl2x7x_config[TSL2X7X_PRX_TIME] = + chip->tsl2x7x_settings.prx_time; + chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] = + chip->tsl2x7x_settings.wait_time; + chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] = + chip->tsl2x7x_settings.prox_config; + + chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] = + (chip->tsl2x7x_settings.als_thresh_low) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] = + (chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] = + (chip->tsl2x7x_settings.als_thresh_high) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] = + (chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] = + chip->tsl2x7x_settings.persistence; + + chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] = + chip->tsl2x7x_settings.prox_pulse_count; + chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] = + chip->tsl2x7x_settings.prox_thres_low; + chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] = + chip->tsl2x7x_settings.prox_thres_high; + + /* and make sure we're not already on */ + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { + /* if forcing a register update - turn off, then on */ + dev_info(&chip->client->dev, "device is already enabled\n"); + return -EINVAL; + } + + /* determine als integration regster */ + als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270; + if (als_count == 0) + als_count = 1; /* ensure at least one cycle */ + + /* convert back to time (encompasses overrides) */ + als_time = (als_count * 27 + 5) / 10; + chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count; + + /* Set the gain based on tsl2x7x_settings struct */ + chip->tsl2x7x_config[TSL2X7X_GAIN] = + (chip->tsl2x7x_settings.als_gain | + (TSL2X7X_mA100 | TSL2X7X_DIODE1) + | ((chip->tsl2x7x_settings.prox_gain) << 2)); + + /* set chip struct re scaling and saturation */ + chip->als_saturation = als_count * 922; /* 90% of full scale */ + chip->als_time_scale = (als_time + 25) / 50; + + /* TSL2X7X Specific power-on / adc enable sequence + * Power on the device 1st. */ + utmp = TSL2X7X_CNTL_PWR_ON; + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed on CNTRL reg.\n", __func__); + return -1; + } + + /* Use the following shadow copy for our delay before enabling ADC. + * Write all the registers. */ + for (i = 0, dev_reg = chip->tsl2x7x_config; + i < TSL2X7X_MAX_CONFIG_REG; i++) { + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG + i, *dev_reg++); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed on write to reg %d.\n", __func__, i); + return ret; + } + } + + udelay(3000); /* Power-on settling time */ + + /* NOW enable the ADC + * initialize the desired mode of operation */ + utmp = TSL2X7X_CNTL_PWR_ON | + TSL2X7X_CNTL_ADC_ENBL | + TSL2X7X_CNTL_PROX_DET_ENBL; + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed on 2nd CTRL reg.\n", __func__); + return ret; + } + + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING; + + if (chip->tsl2x7x_settings.interrupts_en != 0) { + dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n"); + + reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL; + if ((chip->tsl2x7x_settings.interrupts_en == 0x20) || + (chip->tsl2x7x_settings.interrupts_en == 0x30)) + reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL; + + reg_val |= chip->tsl2x7x_settings.interrupts_en; + ret = i2c_smbus_write_byte_data(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_CNTRL), reg_val); + if (ret < 0) + dev_err(&chip->client->dev, + "%s: failed in tsl2x7x_IOCTL_INT_SET.\n", + __func__); + + /* Clear out any initial interrupts */ + ret = i2c_smbus_write_byte(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN | + TSL2X7X_CMD_PROXALS_INT_CLR); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed in tsl2x7x_chip_on\n", + __func__); + return ret; + } + } + + return ret; +} + +static int tsl2x7x_chip_off(struct iio_dev *indio_dev) +{ + int ret; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + /* turn device off */ + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; + + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00); + + if (chip->pdata && chip->pdata->power_off) + chip->pdata->power_off(chip->client); + + return ret; +} + +/* + * Proximity calibration helper function + * runs through a collection of data samples, + * sets the min, max, mean, and std dev. + */ +static +void tsl2x7x_prox_calculate(u16 *data, int length, struct prox_stat *statP) +{ + int i; + int sample_min, sample_max, sample_sum, sample_mean; + unsigned long stddev; + int tmp; + + if (length == 0) + length = 1; + + sample_sum = 0; + sample_min = INT_MAX; + sample_max = INT_MIN; + for (i = 0; i < length; i++) { + sample_sum += data[i]; + if (data[i] < sample_min) + sample_min = data[i]; + if (data[i] > sample_max) + sample_max = data[i]; + } + sample_mean = sample_sum/length; + statP->min = sample_min; + statP->max = sample_max; + statP->mean = sample_mean; + + sample_sum = 0; + for (i = 0; i < length; i++) { + tmp = data[i]-sample_mean; + sample_sum += tmp * tmp; + } + stddev = int_sqrt((long)sample_sum)/length; + statP->stddev = stddev; +} + +/** + * Proximity calibration - collects a number of samples, + * calculates a standard deviation based on the samples, and + * sets the threshold accordingly. + */ +static void tsl2x7x_prox_cal(struct iio_dev *indio_dev) +{ + u16 prox_history[MAX_SAMPLES_CAL + 1]; + int i; + struct prox_stat prox_stat_data[2]; + struct prox_stat *calP; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + u8 tmp_irq_settings; + u8 current_state = chip->tsl2x7x_chip_status; + + if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) { + dev_err(&chip->client->dev, + "%s: max prox samples cal is too big: %d\n", + __func__, chip->tsl2x7x_settings.prox_max_samples_cal); + chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL; + } + + /* have to stop to change settings */ + tsl2x7x_chip_off(indio_dev); + + /* Enable proximity detection save just in case prox not wanted yet*/ + tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en; + chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL; + + /*turn on device if not already on*/ + tsl2x7x_chip_on(indio_dev); + + /*gather the samples*/ + for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) { + mdelay(15); + tsl2x7x_prox_poll(indio_dev); + prox_history[i] = chip->prox_data; + dev_info(&chip->client->dev, "2 i=%d prox data= %d\n", + i, chip->prox_data); + } + + tsl2x7x_chip_off(indio_dev); + calP = &prox_stat_data[PROX_STAT_CAL]; + tsl2x7x_prox_calculate(prox_history, + chip->tsl2x7x_settings.prox_max_samples_cal, calP); + chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean; + + dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n", + calP->min, calP->mean, calP->max); + dev_info(&chip->client->dev, + "%s proximity threshold set to %d\n", + chip->client->name, chip->tsl2x7x_settings.prox_thres_high); + + /* back to the way they were */ + chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings; + if (current_state == TSL2X7X_CHIP_WORKING) + tsl2x7x_chip_on(indio_dev); +} + +static ssize_t tsl2x7x_power_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status); +} + +static ssize_t tsl2x7x_power_state_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + bool value; + + if (strtobool(buf, &value)) + return -EINVAL; + + if (!value) + tsl2x7x_chip_off(indio_dev); + else + tsl2x7x_chip_on(indio_dev); + + return len; +} + +static ssize_t tsl2x7x_gain_available_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (chip->id > tsl2771) + return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128"); + else + return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120"); +} + +static ssize_t tsl2x7x_prox_gain_available_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8"); +} + +static ssize_t tsl2x7x_als_time_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", + chip->tsl2x7x_settings.als_time); +} + +static ssize_t tsl2x7x_als_time_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + unsigned long value; + + if (kstrtoul(buf, 0, &value)) + return -EINVAL; + + if ((value < 50) || (value > 650)) + return -EINVAL; + + if (value % 50) + return -EINVAL; + + chip->tsl2x7x_settings.als_time = value; + + return len; +} + +static IIO_CONST_ATTR(illuminance0_integration_time_available, + "50 100 150 200 250 300 350 400 450 500 550 600 650"); + +static ssize_t tsl2x7x_als_cal_target_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", + chip->tsl2x7x_settings.als_cal_target); +} + +static ssize_t tsl2x7x_als_cal_target_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + unsigned long value; + + if (kstrtoul(buf, 0, &value)) + return -EINVAL; + + if (value) + chip->tsl2x7x_settings.als_cal_target = value; + + return len; +} + +/* sampling_frequency AKA persistence in data sheet */ +static ssize_t tsl2x7x_persistence_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", + chip->tsl2x7x_settings.persistence); +} + +static ssize_t tsl2x7x_persistence_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + unsigned long value; + + if (kstrtoul(buf, 0, &value)) + return -EINVAL; + + chip->tsl2x7x_settings.persistence = value; + + return len; +} + +static IIO_CONST_ATTR(sampling_frequency_available, + "0x00 - 0xFF (0 - 255)"); + +static ssize_t tsl2x7x_do_calibrate(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + bool value; + + if (strtobool(buf, &value)) + return -EINVAL; + + if (value) + tsl2x7x_als_calibrate(indio_dev); + + return len; +} + +static ssize_t tsl2x7x_luxtable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int i = 0; + int offset = 0; + + while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) { + offset += snprintf(buf + offset, PAGE_SIZE, "%d,%d,%d,", + chip->tsl2x7x_device_lux[i].ratio, + chip->tsl2x7x_device_lux[i].ch0, + chip->tsl2x7x_device_lux[i].ch1); + if (chip->tsl2x7x_device_lux[i].ratio == 0) { + /* We just printed the first "0" entry. + * Now get rid of the extra "," and break. */ + offset--; + break; + } + i++; + } + + offset += snprintf(buf + offset, PAGE_SIZE, "\n"); + return offset; +} + +static ssize_t tsl2x7x_luxtable_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int value[ARRAY_SIZE(chip->tsl2x7x_device_lux)*3 + 1]; + int n; + + get_options(buf, ARRAY_SIZE(value), value); + + /* We now have an array of ints starting at value[1], and + * enumerated by value[0]. + * We expect each group of three ints is one table entry, + * and the last table entry is all 0. + */ + n = value[0]; + if ((n % 3) || n < 6 || + n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) { + dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n); + return -EINVAL; + } + + if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) { + dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n); + return -EINVAL; + } + + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) + tsl2x7x_chip_off(indio_dev); + + /* Zero out the table */ + memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux)); + memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4)); + + return len; +} + +static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + bool value; + + if (strtobool(buf, &value)) + return -EINVAL; + + if (value) + tsl2x7x_prox_cal(indio_dev); + + return len; +} + +static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev, + u64 event_code) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int ret; + + if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) + ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10); + else + ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20); + + return ret; +} + +static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev, + u64 event_code, + int val) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) { + if (val) + chip->tsl2x7x_settings.interrupts_en |= 0x10; + else + chip->tsl2x7x_settings.interrupts_en &= 0x20; + } else { + if (val) + chip->tsl2x7x_settings.interrupts_en |= 0x20; + else + chip->tsl2x7x_settings.interrupts_en &= 0x10; + } + + return 0; +} + +static int tsl2x7x_write_thresh(struct iio_dev *indio_dev, + u64 event_code, + int val) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) { + switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { + case IIO_EV_DIR_RISING: + chip->tsl2x7x_settings.als_thresh_high = val; + break; + case IIO_EV_DIR_FALLING: + chip->tsl2x7x_settings.als_thresh_low = val; + break; + default: + return -EINVAL; + } + } else { + switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { + case IIO_EV_DIR_RISING: + chip->tsl2x7x_settings.prox_thres_high = val; + break; + case IIO_EV_DIR_FALLING: + chip->tsl2x7x_settings.prox_thres_low = val; + break; + default: + return -EINVAL; + } + } + + return 0; +} + +static int tsl2x7x_read_thresh(struct iio_dev *indio_dev, + u64 event_code, + int *val) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) { + switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { + case IIO_EV_DIR_RISING: + *val = chip->tsl2x7x_settings.als_thresh_high; + break; + case IIO_EV_DIR_FALLING: + *val = chip->tsl2x7x_settings.als_thresh_low; + break; + default: + return -EINVAL; + } + } else { + switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { + case IIO_EV_DIR_RISING: + *val = chip->tsl2x7x_settings.prox_thres_high; + break; + case IIO_EV_DIR_FALLING: + *val = chip->tsl2x7x_settings.prox_thres_low; + break; + default: + return -EINVAL; + } + } + + return 0; +} + +static int tsl2x7x_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, + int *val2, + long mask) +{ + int ret = -EINVAL; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + switch (mask) { + case 0: + switch (chan->type) { + case IIO_LIGHT: + tsl2x7x_get_lux(indio_dev); + *val = chip->als_cur_info.lux; + ret = IIO_VAL_INT; + break; + case IIO_INTENSITY: + tsl2x7x_get_lux(indio_dev); + if (chan->channel == 0) + *val = chip->als_cur_info.als_ch0; + else + *val = chip->als_cur_info.als_ch1; + ret = IIO_VAL_INT; + break; + case IIO_PROXIMITY: + tsl2x7x_prox_poll(indio_dev); + *val = chip->prox_data; + ret = IIO_VAL_INT; + break; + default: + return -EINVAL; + break; + } + break; + case IIO_CHAN_INFO_CALIBSCALE: + if (chan->type == IIO_LIGHT) + *val = + tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]; + else + *val = + tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain]; + ret = IIO_VAL_INT; + break; + case IIO_CHAN_INFO_CALIBBIAS: + *val = chip->tsl2x7x_settings.als_gain_trim; + ret = IIO_VAL_INT; + break; + + default: + ret = -EINVAL; + } + + return ret; +} + +static int tsl2x7x_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, + int val2, + long mask) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_CALIBSCALE: + if (chan->type == IIO_INTENSITY) { + switch (val) { + case 1: + chip->tsl2x7x_settings.als_gain = 0; + break; + case 8: + chip->tsl2x7x_settings.als_gain = 1; + break; + case 16: + chip->tsl2x7x_settings.als_gain = 2; + break; + case 120: + if (chip->id > tsl2771) + return -EINVAL; + chip->tsl2x7x_settings.als_gain = 3; + break; + case 128: + if (chip->id < tsl2572) + return -EINVAL; + chip->tsl2x7x_settings.als_gain = 3; + break; + default: + return -EINVAL; + } + } else { + switch (val) { + case 1: + chip->tsl2x7x_settings.prox_gain = 0; + break; + case 2: + chip->tsl2x7x_settings.prox_gain = 1; + break; + case 4: + chip->tsl2x7x_settings.prox_gain = 2; + break; + case 8: + chip->tsl2x7x_settings.prox_gain = 3; + break; + default: + return -EINVAL; + } + } + break; + case IIO_CHAN_INFO_CALIBBIAS: + chip->tsl2x7x_settings.als_gain_trim = val; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR, + tsl2x7x_power_state_show, tsl2x7x_power_state_store); + +static DEVICE_ATTR(proximity_calibscale_available, S_IRUGO, + tsl2x7x_prox_gain_available_show, NULL); + +static DEVICE_ATTR(illuminance0_calibscale_available, S_IRUGO, + tsl2x7x_gain_available_show, NULL); + +static DEVICE_ATTR(illuminance0_integration_time, S_IRUGO | S_IWUSR, + tsl2x7x_als_time_show, tsl2x7x_als_time_store); + +static DEVICE_ATTR(illuminance0_target_input, S_IRUGO | S_IWUSR, + tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store); + +static DEVICE_ATTR(illuminance0_calibrate, S_IWUSR, NULL, + tsl2x7x_do_calibrate); + +static DEVICE_ATTR(proximity_calibrate, S_IWUSR, NULL, + tsl2x7x_do_prox_calibrate); + +static DEVICE_ATTR(illuminance0_lux_table, S_IRUGO | S_IWUSR, + tsl2x7x_luxtable_show, tsl2x7x_luxtable_store); + +static DEVICE_ATTR(sampling_frequency, S_IRUGO | S_IWUSR, + tsl2x7x_persistence_show, tsl2x7x_persistence_store); + +/* Use the default register values to identify the Taos device */ +static int tsl2x7x_device_id(unsigned char *id, int target) +{ + switch (target) { + case tsl2571: + case tsl2671: + case tsl2771: + return ((*id & 0xf0) == TRITON_ID); + break; + case tmd2671: + case tmd2771: + return ((*id & 0xf0) == HALIBUT_ID); + break; + case tsl2572: + case tsl2672: + case tmd2672: + case tsl2772: + case tmd2772: + return ((*id & 0xf0) == SWORDFISH_ID); + break; + } + + return -EINVAL; +} + +/* + * Interrupt Event Handler */ +static irqreturn_t tsl2x7x_event_handler(int irq, void *private) +{ + struct iio_dev *indio_dev = private; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + s64 timestamp = iio_get_time_ns(); + int ret; + int value; + + value = i2c_smbus_read_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_STATUS); + + /* What type of interrupt do we need to process */ + if (value & TSL2X7X_STA_PRX_INTR) { + tsl2x7x_prox_poll(indio_dev); + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, + 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + timestamp); + } + + if (value & TSL2X7X_STA_ALS_INTR) { + tsl2x7x_get_lux(indio_dev); + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_LIGHT, + 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + timestamp); + } + /* Clear interrupt now that we have handled it. */ + ret = i2c_smbus_write_byte(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN | + TSL2X7X_CMD_PROXALS_INT_CLR); + if (ret < 0) + dev_err(&chip->client->dev, + "%s: Failed to clear irq from event handler. err = %d\n", + __func__, ret); + + return IRQ_HANDLED; +} + +static struct attribute *tsl2x7x_ALS_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_illuminance0_calibscale_available.attr, + &dev_attr_illuminance0_integration_time.attr, + &iio_const_attr_illuminance0_integration_time_available.dev_attr.attr, + &dev_attr_illuminance0_target_input.attr, + &dev_attr_illuminance0_calibrate.attr, + &dev_attr_illuminance0_lux_table.attr, + &dev_attr_sampling_frequency.attr, + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + NULL +}; + +static struct attribute *tsl2x7x_PRX_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_sampling_frequency.attr, + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &dev_attr_proximity_calibrate.attr, + NULL +}; + +static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_illuminance0_calibscale_available.attr, + &dev_attr_illuminance0_integration_time.attr, + &iio_const_attr_illuminance0_integration_time_available.dev_attr.attr, + &dev_attr_illuminance0_target_input.attr, + &dev_attr_illuminance0_calibrate.attr, + &dev_attr_illuminance0_lux_table.attr, + &dev_attr_sampling_frequency.attr, + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &dev_attr_proximity_calibrate.attr, + NULL +}; + +static struct attribute *tsl2x7x_PRX2_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_sampling_frequency.attr, + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &dev_attr_proximity_calibrate.attr, + &dev_attr_proximity_calibscale_available.attr, + NULL +}; + +static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_illuminance0_calibscale_available.attr, + &dev_attr_illuminance0_integration_time.attr, + &iio_const_attr_illuminance0_integration_time_available.dev_attr.attr, + &dev_attr_illuminance0_target_input.attr, + &dev_attr_illuminance0_calibrate.attr, + &dev_attr_illuminance0_lux_table.attr, + &dev_attr_sampling_frequency.attr, + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &dev_attr_proximity_calibrate.attr, + &dev_attr_proximity_calibscale_available.attr, + NULL +}; + +static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = { + [ALS] = { + .attrs = tsl2x7x_ALS_device_attrs, + }, + [PRX] = { + .attrs = tsl2x7x_PRX_device_attrs, + }, + [ALSPRX] = { + .attrs = tsl2x7x_ALSPRX_device_attrs, + }, + [PRX2] = { + .attrs = tsl2x7x_PRX2_device_attrs, + }, + [ALSPRX2] = { + .attrs = tsl2x7x_ALSPRX2_device_attrs, + }, +}; + +static const struct iio_info tsl2X7X_device_info[] = { + [ALS] = { + .attrs = &tsl2X7X_device_attr_group_tbl[ALS], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [PRX] = { + .attrs = &tsl2X7X_device_attr_group_tbl[PRX], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [ALSPRX] = { + .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [PRX2] = { + .attrs = &tsl2X7X_device_attr_group_tbl[PRX2], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [ALSPRX2] = { + .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, +}; + +static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = { + [ALS] = { + .channel = { + { + .type = IIO_LIGHT, + .indexed = 1, + .channel = 0, + .processed_val = 1, + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 0, + .info_mask = IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT | + IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, + .event_mask = TSL2X7X_EVENT_MASK + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 1, + }, + }, + .chan_table_elements = 3, + .info = &tsl2X7X_device_info[ALS], + }, + [PRX] = { + .channel = { + { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .event_mask = TSL2X7X_EVENT_MASK + }, + }, + .chan_table_elements = 1, + .info = &tsl2X7X_device_info[PRX], + }, + [ALSPRX] = { + .channel = { + { + .type = IIO_LIGHT, + .indexed = 1, + .channel = 0, + .processed_val = 1, + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 0, + .info_mask = IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT | + IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, + .event_mask = TSL2X7X_EVENT_MASK + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 1, + }, { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .event_mask = TSL2X7X_EVENT_MASK + }, + }, + .chan_table_elements = 4, + .info = &tsl2X7X_device_info[ALSPRX], + }, + [PRX2] = { + .channel = { + { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .info_mask = + IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT, + .event_mask = TSL2X7X_EVENT_MASK + }, + }, + .chan_table_elements = 1, + .info = &tsl2X7X_device_info[PRX2], + }, + [ALSPRX2] = { + .channel = { + { + .type = IIO_LIGHT, + .indexed = 1, + .channel = 0, + .processed_val = 1, + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 0, + .info_mask = IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT | + IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, + .event_mask = TSL2X7X_EVENT_MASK + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 1, + }, { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .info_mask = + IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT, + .event_mask = TSL2X7X_EVENT_MASK + }, + }, + .chan_table_elements = 4, + .info = &tsl2X7X_device_info[ALSPRX2], + }, +}; + +/* + * Client probe function. + */ +static int __devinit tsl2x7x_probe(struct i2c_client *clientp, + const struct i2c_device_id *id) +{ + int ret; + unsigned char device_id; + struct iio_dev *indio_dev; + struct tsl2X7X_chip *chip; + + indio_dev = iio_allocate_device(sizeof(*chip)); + if (!indio_dev) + return -ENOMEM; + + chip = iio_priv(indio_dev); + chip->client = clientp; + i2c_set_clientdata(clientp, indio_dev); + + ret = tsl2x7x_i2c_read(chip->client, + TSL2X7X_CHIPID, &device_id); + if (ret < 0) + goto fail1; + + if ((!tsl2x7x_device_id(&device_id, id->driver_data)) || + (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) { + dev_info(&chip->client->dev, + "i2c device found does not match expected id in %s\n", + __func__); + goto fail1; + } + + ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); + if (ret < 0) { + dev_err(&clientp->dev, "%s: write to cmd reg failed. err = %d\n", + __func__, ret); + goto fail1; + } + + /* ALS and PROX functions can be invoked via user space poll + * or H/W interrupt. If busy return last sample. */ + mutex_init(&chip->als_mutex); + mutex_init(&chip->prox_mutex); + + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN; + chip->pdata = clientp->dev.platform_data; + chip->id = id->driver_data; + chip->chip_info = + &tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]]; + + indio_dev->info = chip->chip_info->info; + indio_dev->dev.parent = &clientp->dev; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->name = chip->client->name; + indio_dev->channels = chip->chip_info->channel; + indio_dev->num_channels = chip->chip_info->chan_table_elements; + + if (clientp->irq) { + ret = request_threaded_irq(clientp->irq, + NULL, + &tsl2x7x_event_handler, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, + "TSL2X7X_event", + indio_dev); + if (ret) { + dev_err(&clientp->dev, + "%s: irq request failed", __func__); + goto fail2; + } + } + + /* Load up the defaults */ + tsl2x7x_defaults(chip); + /* Make sure the chip is on */ + tsl2x7x_chip_on(indio_dev); + + ret = iio_device_register(indio_dev); + if (ret) { + dev_err(&clientp->dev, + "%s: iio registration failed\n", __func__); + goto fail1; + } + + dev_info(&clientp->dev, "%s Light sensor found.\n", id->name); + return 0; + +fail1: + if (clientp->irq) + free_irq(clientp->irq, indio_dev); +fail2: + iio_free_device(indio_dev); + return ret; +} + +static int tsl2x7x_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int ret = 0; + + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { + ret = tsl2x7x_chip_off(indio_dev); + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; + } + + if (chip->pdata && chip->pdata->platform_power) { + pm_message_t pmm = {PM_EVENT_SUSPEND}; + chip->pdata->platform_power(dev, pmm); + } + + return ret; +} + +static int tsl2x7x_resume(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int ret = 0; + + if (chip->pdata && chip->pdata->platform_power) { + pm_message_t pmm = {PM_EVENT_RESUME}; + chip->pdata->platform_power(dev, pmm); + } + + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED) + ret = tsl2x7x_chip_on(indio_dev); + + return ret; +} + +static int __devexit tsl2x7x_remove(struct i2c_client *client) +{ + struct tsl2X7X_chip *chip = i2c_get_clientdata(client); + struct iio_dev *indio_dev = iio_priv_to_dev(chip); + + tsl2x7x_chip_off(indio_dev); + + iio_device_unregister(indio_dev); + if (client->irq) + free_irq(client->irq, chip->client->name); + + iio_free_device(indio_dev); + + return 0; +} + +static struct i2c_device_id tsl2x7x_idtable[] = { + { "tsl2571", tsl2571 }, + { "tsl2671", tsl2671 }, + { "tmd2671", tmd2671 }, + { "tsl2771", tsl2771 }, + { "tmd2771", tmd2771 }, + { "tsl2572", tsl2572 }, + { "tsl2672", tsl2672 }, + { "tmd2672", tmd2672 }, + { "tsl2772", tsl2772 }, + { "tmd2772", tmd2772 }, + {} +}; + +MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable); + +static const struct dev_pm_ops tsl2x7x_pm_ops = { + .suspend = tsl2x7x_suspend, + .resume = tsl2x7x_resume, +}; + +/* Driver definition */ +static struct i2c_driver tsl2x7x_driver = { + .driver = { + .name = "tsl2x7x", + .pm = &tsl2x7x_pm_ops, + }, + .id_table = tsl2x7x_idtable, + .probe = tsl2x7x_probe, + .remove = __devexit_p(tsl2x7x_remove), +}; + +module_i2c_driver(tsl2x7x_driver); + +MODULE_AUTHOR("J. August Brenner<jbrenner@xxxxxxxxxxx>"); +MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver"); +MODULE_LICENSE("GPL"); -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html