staging: iio: tsl2x7x: rename driver for consistency with other IIO light drivers
authorBrian Masney <masneyb@onstation.org>
Fri, 5 May 2017 00:38:22 +0000 (20:38 -0400)
committerJonathan Cameron <jic23@kernel.org>
Sun, 7 May 2017 12:10:17 +0000 (13:10 +0100)
This patch renames the tsl2x7x_core.c file to tsl2x7x.c so that the
naming convention is consistent with other IIO light drivers outside
of staging.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/staging/iio/light/Makefile
drivers/staging/iio/light/tsl2x7x.c [new file with mode: 0644]
drivers/staging/iio/light/tsl2x7x_core.c [deleted file]

index 10286c3ee6fef3d5f0492464f3ba61e2a6dbc13a..ab8dc3a3d10be0ccaf29e1a959e8b3364ee87515 100644 (file)
@@ -2,4 +2,4 @@
 # Makefile for industrial I/O Light sensors
 #
 
-obj-$(CONFIG_TSL2x7x)  += tsl2x7x_core.o
+obj-$(CONFIG_TSL2x7x)  += tsl2x7x.o
diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
new file mode 100644 (file)
index 0000000..8121a51
--- /dev/null
@@ -0,0 +1,2063 @@
+/*
+ * 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/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include "tsl2x7x.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      (TSL2X7X_STA_ADC_VALID |\
+                                       TSL2X7X_STA_PRX_VALID)
+#define TSL2X7X_STA_ALS_INTR           0x10
+#define TSL2X7X_STA_PRX_INTR           0x20
+
+/* 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
+#define TSL2X7X_MAX_TIMER_CNT          (0xFF)
+
+#define TSL2X7X_MIN_ITIME 3
+
+/* 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
+};
+
+struct tsl2x7x_parse_result {
+       int integer;
+       int fract;
+};
+
+/* Per-device data */
+struct tsl2x7x_als_info {
+       u16 als_ch0;
+       u16 als_ch1;
+       u16 lux;
+};
+
+struct tsl2x7x_prox_stat {
+       int min;
+       int max;
+       int mean;
+       unsigned long stddev;
+};
+
+struct tsl2x7x_chip_info {
+       int chan_table_elements;
+       struct iio_chan_spec            channel[4];
+       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 = 219, /* 101 ms */
+       .als_gain = 0,
+       .prx_time = 254, /* 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 = 255,
+       .interrupts_en = 0,
+       .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,
+};
+
+static const u8 device_channel_config[] = {
+       ALS,
+       PRX,
+       PRX,
+       ALSPRX,
+       ALSPRX,
+       ALS,
+       PRX2,
+       PRX2,
+       ALSPRX2,
+       ALSPRX2
+};
+
+/**
+ * tsl2x7x_i2c_read() - Read a byte from a register.
+ * @client:    i2c client
+ * @reg:       device register to read from
+ * @*val:      pointer to location to store register contents.
+ *
+ */
+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, "failed to write register %x\n", reg);
+               return ret;
+       }
+
+       /* read the data */
+       ret = i2c_smbus_read_byte(client);
+       if (ret >= 0)
+               *val = (u8)ret;
+       else
+               dev_err(&client->dev, "failed to read register %x\n", reg);
+
+       return ret;
+}
+
+/**
+ * tsl2x7x_get_lux() - Reads and calculates current lux value.
+ * @indio_dev: pointer to 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)
+               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 STATUS 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,
+                               "failed to read. err=%x\n", ret);
+                       goto out_unlock;
+               }
+       }
+
+       /* clear any existing interrupt status */
+       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 - err = %d\n", 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) {
+               /* have no data, so return LAST VALUE */
+               ret = chip->als_cur_info.lux;
+               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, "ch1lux > ch0lux-return 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;
+}
+
+/**
+ * tsl2x7x_get_prox() - Reads proximity data registers and updates
+ *                      chip->prox_data.
+ *
+ * @indio_dev: pointer to IIO device
+ */
+static int tsl2x7x_get_prox(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, "i2c err=%d\n", ret);
+               goto prox_poll_err;
+       }
+
+       switch (chip->id) {
+       case tsl2571:
+       case tsl2671:
+       case tmd2671:
+       case tsl2771:
+       case tmd2771:
+               if (!(status & TSL2X7X_STA_ADC_VALID))
+                       goto prox_poll_err;
+       break;
+       case tsl2572:
+       case tsl2672:
+       case tmd2672:
+       case tsl2772:
+       case tmd2772:
+               if (!(status & TSL2X7X_STA_PRX_VALID))
+                       goto prox_poll_err;
+       break;
+       }
+
+       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;
+}
+
+/**
+ * tsl2x7x_defaults() - Populates the device nominal operating parameters
+ *                      with those provided by a 'platform' data struct or
+ *                      with prefined defaults.
+ *
+ * @chip:               pointer to device structure.
+ */
+static void tsl2x7x_defaults(struct tsl2X7X_chip *chip)
+{
+       /* If Operational settings defined elsewhere.. */
+       if (chip->pdata && chip->pdata->platform_default_settings)
+               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);
+}
+
+/**
+ * tsl2x7x_als_calibrate() -   Obtain single reading and calculate
+ *                              the als_gain_trim.
+ *
+ * @indio_dev: pointer to IIO device
+ */
+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,
+                       "failed to write CNTRL register, ret=%d\n", 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,
+                       "failed to write ctrl reg: ret=%d\n", 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;
+}
+
+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) & 0xFF;
+       chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] =
+                       (chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF;
+       chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
+                       (chip->tsl2x7x_settings.prox_thres_high) & 0xFF;
+       chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] =
+                       (chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF;
+
+       /* 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 register */
+       als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270;
+       if (!als_count)
+               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 ret;
+       }
+
+       /*
+        * 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,
+                               "failed on write to reg %d.\n", i);
+                       return ret;
+               }
+       }
+
+       mdelay(3);      /* 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 to clear Int status\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;
+}
+
+/**
+ * tsl2x7x_invoke_change
+ * @indio_dev: pointer to IIO device
+ *
+ * Obtain and lock both ALS and PROX resources,
+ * determine and save device state (On/Off),
+ * cycle device to implement updated parameter,
+ * put device back into proper state, and unlock
+ * resource.
+ */
+static
+int tsl2x7x_invoke_change(struct iio_dev *indio_dev)
+{
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+       int device_status = chip->tsl2x7x_chip_status;
+
+       mutex_lock(&chip->als_mutex);
+       mutex_lock(&chip->prox_mutex);
+
+       if (device_status == TSL2X7X_CHIP_WORKING)
+               tsl2x7x_chip_off(indio_dev);
+
+       tsl2x7x_chip_on(indio_dev);
+
+       if (device_status != TSL2X7X_CHIP_WORKING)
+               tsl2x7x_chip_off(indio_dev);
+
+       mutex_unlock(&chip->prox_mutex);
+       mutex_unlock(&chip->als_mutex);
+
+       return 0;
+}
+
+static
+void tsl2x7x_prox_calculate(int *data, int length,
+                           struct tsl2x7x_prox_stat *statP)
+{
+       int i;
+       int sample_sum;
+       int tmp;
+
+       if (!length)
+               length = 1;
+
+       sample_sum = 0;
+       statP->min = INT_MAX;
+       statP->max = INT_MIN;
+       for (i = 0; i < length; i++) {
+               sample_sum += data[i];
+               statP->min = min(statP->min, data[i]);
+               statP->max = max(statP->max, data[i]);
+       }
+
+       statP->mean = sample_sum / length;
+       sample_sum = 0;
+       for (i = 0; i < length; i++) {
+               tmp = data[i] - statP->mean;
+               sample_sum += tmp * tmp;
+       }
+       statP->stddev = int_sqrt((long)sample_sum / length);
+}
+
+/**
+ * tsl2x7x_prox_cal() - Calculates std. and sets thresholds.
+ * @indio_dev: pointer to IIO device
+ *
+ * Calculates a standard deviation based on the samples,
+ * and sets the threshold accordingly.
+ */
+static void tsl2x7x_prox_cal(struct iio_dev *indio_dev)
+{
+       int prox_history[MAX_SAMPLES_CAL + 1];
+       int i;
+       struct tsl2x7x_prox_stat prox_stat_data[2];
+       struct tsl2x7x_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,
+                       "max prox samples cal is too big: %d\n",
+                       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_get_prox(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 tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(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_to_iio_dev(dev);
+       bool value;
+
+       if (strtobool(buf, &value))
+               return -EINVAL;
+
+       if (value)
+               tsl2x7x_chip_on(indio_dev);
+       else
+               tsl2x7x_chip_off(indio_dev);
+
+       return len;
+}
+
+static ssize_t tsl2x7x_gain_available_show(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
+{
+       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
+
+       switch (chip->id) {
+       case tsl2571:
+       case tsl2671:
+       case tmd2671:
+       case tsl2771:
+       case tmd2771:
+               return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128");
+       }
+
+       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 tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
+       int y, z;
+
+       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
+       z = y * TSL2X7X_MIN_ITIME;
+       y /= 1000;
+       z %= 1000;
+
+       return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
+}
+
+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_to_iio_dev(dev);
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+       struct tsl2x7x_parse_result result;
+       int ret;
+
+       ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
+       if (ret)
+               return ret;
+
+       result.fract /= 3;
+       chip->tsl2x7x_settings.als_time =
+                       TSL2X7X_MAX_TIMER_CNT - (u8)result.fract;
+
+       dev_info(&chip->client->dev, "%s: als time = %d",
+                __func__, chip->tsl2x7x_settings.als_time);
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static IIO_CONST_ATTR(in_illuminance0_integration_time_available,
+               ".00272 - .696");
+
+static ssize_t tsl2x7x_als_cal_target_show(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
+{
+       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(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_to_iio_dev(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;
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return len;
+}
+
+/* persistence settings */
+static ssize_t tsl2x7x_als_persistence_show(struct device *dev,
+                                           struct device_attribute *attr,
+                                           char *buf)
+{
+       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
+       int y, z, filter_delay;
+
+       /* Determine integration time */
+       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
+       z = y * TSL2X7X_MIN_ITIME;
+       filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F);
+       y = filter_delay / 1000;
+       z = filter_delay % 1000;
+
+       return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
+}
+
+static ssize_t tsl2x7x_als_persistence_store(struct device *dev,
+                                            struct device_attribute *attr,
+                                            const char *buf, size_t len)
+{
+       struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+       struct tsl2x7x_parse_result result;
+       int y, z, filter_delay;
+       int ret;
+
+       ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
+       if (ret)
+               return ret;
+
+       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
+       z = y * TSL2X7X_MIN_ITIME;
+
+       filter_delay =
+               DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
+
+       chip->tsl2x7x_settings.persistence &= 0xF0;
+       chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F);
+
+       dev_info(&chip->client->dev, "%s: als persistence = %d",
+                __func__, filter_delay);
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static ssize_t tsl2x7x_prox_persistence_show(struct device *dev,
+                                            struct device_attribute *attr,
+                                            char *buf)
+{
+       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
+       int y, z, filter_delay;
+
+       /* Determine integration time */
+       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
+       z = y * TSL2X7X_MIN_ITIME;
+       filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4);
+       y = filter_delay / 1000;
+       z = filter_delay % 1000;
+
+       return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
+}
+
+static ssize_t tsl2x7x_prox_persistence_store(struct device *dev,
+                                             struct device_attribute *attr,
+                                             const char *buf, size_t len)
+{
+       struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+       struct tsl2x7x_parse_result result;
+       int y, z, filter_delay;
+       int ret;
+
+       ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
+       if (ret)
+               return ret;
+
+       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
+       z = y * TSL2X7X_MIN_ITIME;
+
+       filter_delay =
+               DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
+
+       chip->tsl2x7x_settings.persistence &= 0x0F;
+       chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0);
+
+       dev_info(&chip->client->dev, "%s: prox persistence = %d",
+                __func__, filter_delay);
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return IIO_VAL_INT_PLUS_MICRO;
+}
+
+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_to_iio_dev(dev);
+       bool value;
+
+       if (strtobool(buf, &value))
+               return -EINVAL;
+
+       if (value)
+               tsl2x7x_als_calibrate(indio_dev);
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return len;
+}
+
+static ssize_t tsl2x7x_luxtable_show(struct device *dev,
+                                    struct device_attribute *attr,
+                                    char *buf)
+{
+       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
+       int i = 0;
+       int offset = 0;
+
+       while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) {
+               offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,%u,",
+                       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_to_iio_dev(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));
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       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_to_iio_dev(dev);
+       bool value;
+
+       if (strtobool(buf, &value))
+               return -EINVAL;
+
+       if (value)
+               tsl2x7x_prox_cal(indio_dev);
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return len;
+}
+
+static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev,
+                                        const struct iio_chan_spec *chan,
+                                        enum iio_event_type type,
+                                        enum iio_event_direction dir)
+{
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+       int ret;
+
+       if (chan->type == 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,
+                                         const struct iio_chan_spec *chan,
+                                         enum iio_event_type type,
+                                         enum iio_event_direction dir,
+                                         int val)
+{
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+
+       if (chan->type == 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;
+       }
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return 0;
+}
+
+static int tsl2x7x_write_thresh(struct iio_dev *indio_dev,
+                               const struct iio_chan_spec *chan,
+                               enum iio_event_type type,
+                               enum iio_event_direction dir,
+                               enum iio_event_info info,
+                               int val, int val2)
+{
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+
+       if (chan->type == IIO_INTENSITY) {
+               switch (dir) {
+               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 (dir) {
+               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;
+               }
+       }
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return 0;
+}
+
+static int tsl2x7x_read_thresh(struct iio_dev *indio_dev,
+                              const struct iio_chan_spec *chan,
+                              enum iio_event_type type,
+                              enum iio_event_direction dir,
+                                  enum iio_event_info info,
+                              int *val, int *val2)
+{
+       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+
+       if (chan->type == IIO_INTENSITY) {
+               switch (dir) {
+               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 (dir) {
+               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 IIO_VAL_INT;
+}
+
+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 IIO_CHAN_INFO_PROCESSED:
+               switch (chan->type) {
+               case IIO_LIGHT:
+                       tsl2x7x_get_lux(indio_dev);
+                       *val = chip->als_cur_info.lux;
+                       ret = IIO_VAL_INT;
+                       break;
+               default:
+                       return -EINVAL;
+               }
+               break;
+       case IIO_CHAN_INFO_RAW:
+               switch (chan->type) {
+               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_get_prox(indio_dev);
+                       *val = chip->prox_data;
+                       ret = IIO_VAL_INT;
+                       break;
+               default:
+                       return -EINVAL;
+               }
+               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:
+                               switch (chip->id) {
+                               case tsl2572:
+                               case tsl2672:
+                               case tmd2672:
+                               case tsl2772:
+                               case tmd2772:
+                                       return -EINVAL;
+                               }
+                               chip->tsl2x7x_settings.als_gain = 3;
+                               break;
+                       case 128:
+                               switch (chip->id) {
+                               case tsl2571:
+                               case tsl2671:
+                               case tmd2671:
+                               case tsl2771:
+                               case tmd2771:
+                                       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;
+       }
+
+       tsl2x7x_invoke_change(indio_dev);
+
+       return 0;
+}
+
+static DEVICE_ATTR(power_state, 0644,
+               tsl2x7x_power_state_show, tsl2x7x_power_state_store);
+
+static DEVICE_ATTR(in_proximity0_calibscale_available, 0444,
+               tsl2x7x_prox_gain_available_show, NULL);
+
+static DEVICE_ATTR(in_illuminance0_calibscale_available, 0444,
+               tsl2x7x_gain_available_show, NULL);
+
+static DEVICE_ATTR(in_illuminance0_integration_time, 0644,
+               tsl2x7x_als_time_show, tsl2x7x_als_time_store);
+
+static DEVICE_ATTR(in_illuminance0_target_input, 0644,
+               tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store);
+
+static DEVICE_ATTR(in_illuminance0_calibrate, 0200, NULL,
+               tsl2x7x_do_calibrate);
+
+static DEVICE_ATTR(in_proximity0_calibrate, 0200, NULL,
+               tsl2x7x_do_prox_calibrate);
+
+static DEVICE_ATTR(in_illuminance0_lux_table, 0644,
+               tsl2x7x_luxtable_show, tsl2x7x_luxtable_store);
+
+static DEVICE_ATTR(in_intensity0_thresh_period, 0644,
+               tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store);
+
+static DEVICE_ATTR(in_proximity0_thresh_period,  0644,
+               tsl2x7x_prox_persistence_show, tsl2x7x_prox_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;
+       case tmd2671:
+       case tmd2771:
+               return (*id & 0xf0) == HALIBUT_ID;
+       case tsl2572:
+       case tsl2672:
+       case tmd2672:
+       case tsl2772:
+       case tmd2772:
+               return (*id & 0xf0) == SWORDFISH_ID;
+       }
+
+       return -EINVAL;
+}
+
+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(indio_dev);
+       int ret;
+       u8 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_get_prox(indio_dev); /* freshen data for ABI */
+               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); /* freshen data for ABI */
+               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,
+                       "Failed to clear irq from event handler. err = %d\n",
+                       ret);
+
+       return IRQ_HANDLED;
+}
+
+static struct attribute *tsl2x7x_ALS_device_attrs[] = {
+       &dev_attr_power_state.attr,
+       &dev_attr_in_illuminance0_calibscale_available.attr,
+       &dev_attr_in_illuminance0_integration_time.attr,
+       &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
+       &dev_attr_in_illuminance0_target_input.attr,
+       &dev_attr_in_illuminance0_calibrate.attr,
+       &dev_attr_in_illuminance0_lux_table.attr,
+       NULL
+};
+
+static struct attribute *tsl2x7x_PRX_device_attrs[] = {
+       &dev_attr_power_state.attr,
+       &dev_attr_in_proximity0_calibrate.attr,
+       NULL
+};
+
+static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
+       &dev_attr_power_state.attr,
+       &dev_attr_in_illuminance0_calibscale_available.attr,
+       &dev_attr_in_illuminance0_integration_time.attr,
+       &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
+       &dev_attr_in_illuminance0_target_input.attr,
+       &dev_attr_in_illuminance0_calibrate.attr,
+       &dev_attr_in_illuminance0_lux_table.attr,
+       &dev_attr_in_proximity0_calibrate.attr,
+       NULL
+};
+
+static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
+       &dev_attr_power_state.attr,
+       &dev_attr_in_proximity0_calibrate.attr,
+       &dev_attr_in_proximity0_calibscale_available.attr,
+       NULL
+};
+
+static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
+       &dev_attr_power_state.attr,
+       &dev_attr_in_illuminance0_calibscale_available.attr,
+       &dev_attr_in_illuminance0_integration_time.attr,
+       &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
+       &dev_attr_in_illuminance0_target_input.attr,
+       &dev_attr_in_illuminance0_calibrate.attr,
+       &dev_attr_in_illuminance0_lux_table.attr,
+       &dev_attr_in_proximity0_calibrate.attr,
+       &dev_attr_in_proximity0_calibscale_available.attr,
+       NULL
+};
+
+static struct attribute *tsl2X7X_ALS_event_attrs[] = {
+       &dev_attr_in_intensity0_thresh_period.attr,
+       NULL,
+};
+
+static struct attribute *tsl2X7X_PRX_event_attrs[] = {
+       &dev_attr_in_proximity0_thresh_period.attr,
+       NULL,
+};
+
+static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = {
+       &dev_attr_in_intensity0_thresh_period.attr,
+       &dev_attr_in_proximity0_thresh_period.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 attribute_group tsl2X7X_event_attr_group_tbl[] = {
+       [ALS] = {
+               .attrs = tsl2X7X_ALS_event_attrs,
+               .name = "events",
+       },
+       [PRX] = {
+               .attrs = tsl2X7X_PRX_event_attrs,
+               .name = "events",
+       },
+       [ALSPRX] = {
+               .attrs = tsl2X7X_ALSPRX_event_attrs,
+               .name = "events",
+       },
+};
+
+static const struct iio_info tsl2X7X_device_info[] = {
+       [ALS] = {
+               .attrs = &tsl2X7X_device_attr_group_tbl[ALS],
+               .event_attrs = &tsl2X7X_event_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],
+               .event_attrs = &tsl2X7X_event_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],
+               .event_attrs = &tsl2X7X_event_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],
+               .event_attrs = &tsl2X7X_event_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,
+       },
+       [ALSPRX2] = {
+               .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2],
+               .event_attrs = &tsl2X7X_event_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,
+       },
+};
+
+static const struct iio_event_spec tsl2x7x_events[] = {
+       {
+               .type = IIO_EV_TYPE_THRESH,
+               .dir = IIO_EV_DIR_RISING,
+               .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+                       BIT(IIO_EV_INFO_ENABLE),
+       }, {
+               .type = IIO_EV_TYPE_THRESH,
+               .dir = IIO_EV_DIR_FALLING,
+               .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+                       BIT(IIO_EV_INFO_ENABLE),
+       },
+};
+
+static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
+       [ALS] = {
+               .channel = {
+                       {
+                       .type = IIO_LIGHT,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+                       }, {
+                       .type = IIO_INTENSITY,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                               BIT(IIO_CHAN_INFO_CALIBSCALE) |
+                               BIT(IIO_CHAN_INFO_CALIBBIAS),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       }, {
+                       .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,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       },
+               },
+       .chan_table_elements = 1,
+       .info = &tsl2X7X_device_info[PRX],
+       },
+       [ALSPRX] = {
+               .channel = {
+                       {
+                       .type = IIO_LIGHT,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED)
+                       }, {
+                       .type = IIO_INTENSITY,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                               BIT(IIO_CHAN_INFO_CALIBSCALE) |
+                               BIT(IIO_CHAN_INFO_CALIBBIAS),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       }, {
+                       .type = IIO_INTENSITY,
+                       .indexed = 1,
+                       .channel = 1,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+                       }, {
+                       .type = IIO_PROXIMITY,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       },
+               },
+       .chan_table_elements = 4,
+       .info = &tsl2X7X_device_info[ALSPRX],
+       },
+       [PRX2] = {
+               .channel = {
+                       {
+                       .type = IIO_PROXIMITY,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                               BIT(IIO_CHAN_INFO_CALIBSCALE),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       },
+               },
+       .chan_table_elements = 1,
+       .info = &tsl2X7X_device_info[PRX2],
+       },
+       [ALSPRX2] = {
+               .channel = {
+                       {
+                       .type = IIO_LIGHT,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+                       }, {
+                       .type = IIO_INTENSITY,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                               BIT(IIO_CHAN_INFO_CALIBSCALE) |
+                               BIT(IIO_CHAN_INFO_CALIBBIAS),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       }, {
+                       .type = IIO_INTENSITY,
+                       .indexed = 1,
+                       .channel = 1,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+                       }, {
+                       .type = IIO_PROXIMITY,
+                       .indexed = 1,
+                       .channel = 0,
+                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                               BIT(IIO_CHAN_INFO_CALIBSCALE),
+                       .event_spec = tsl2x7x_events,
+                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
+                       },
+               },
+       .chan_table_elements = 4,
+       .info = &tsl2X7X_device_info[ALSPRX2],
+       },
+};
+
+static int 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 = devm_iio_device_alloc(&clientp->dev, 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)
+               return ret;
+
+       if ((!tsl2x7x_device_id(&device_id, id->driver_data)) ||
+           (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) {
+               dev_info(&chip->client->dev,
+                        "%s: i2c device found does not match expected id\n",
+                               __func__);
+               return -EINVAL;
+       }
+
+       ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
+       if (ret < 0) {
+               dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n",
+                       ret);
+               return ret;
+       }
+
+       /*
+        * 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 = dev_get_platdata(&clientp->dev);
+       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 = devm_request_threaded_irq(&clientp->dev, 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__);
+                       return ret;
+               }
+       }
+
+       /* 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__);
+               return ret;
+       }
+
+       dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
+
+       return 0;
+}
+
+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 tsl2x7x_remove(struct i2c_client *client)
+{
+       struct iio_dev *indio_dev = i2c_get_clientdata(client);
+
+       tsl2x7x_chip_off(indio_dev);
+
+       iio_device_unregister(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 = tsl2x7x_remove,
+};
+
+module_i2c_driver(tsl2x7x_driver);
+
+MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>");
+MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
deleted file mode 100644 (file)
index 8121a51..0000000
+++ /dev/null
@@ -1,2063 +0,0 @@
-/*
- * 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/iio/events.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include "tsl2x7x.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      (TSL2X7X_STA_ADC_VALID |\
-                                       TSL2X7X_STA_PRX_VALID)
-#define TSL2X7X_STA_ALS_INTR           0x10
-#define TSL2X7X_STA_PRX_INTR           0x20
-
-/* 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
-#define TSL2X7X_MAX_TIMER_CNT          (0xFF)
-
-#define TSL2X7X_MIN_ITIME 3
-
-/* 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
-};
-
-struct tsl2x7x_parse_result {
-       int integer;
-       int fract;
-};
-
-/* Per-device data */
-struct tsl2x7x_als_info {
-       u16 als_ch0;
-       u16 als_ch1;
-       u16 lux;
-};
-
-struct tsl2x7x_prox_stat {
-       int min;
-       int max;
-       int mean;
-       unsigned long stddev;
-};
-
-struct tsl2x7x_chip_info {
-       int chan_table_elements;
-       struct iio_chan_spec            channel[4];
-       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 = 219, /* 101 ms */
-       .als_gain = 0,
-       .prx_time = 254, /* 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 = 255,
-       .interrupts_en = 0,
-       .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,
-};
-
-static const u8 device_channel_config[] = {
-       ALS,
-       PRX,
-       PRX,
-       ALSPRX,
-       ALSPRX,
-       ALS,
-       PRX2,
-       PRX2,
-       ALSPRX2,
-       ALSPRX2
-};
-
-/**
- * tsl2x7x_i2c_read() - Read a byte from a register.
- * @client:    i2c client
- * @reg:       device register to read from
- * @*val:      pointer to location to store register contents.
- *
- */
-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, "failed to write register %x\n", reg);
-               return ret;
-       }
-
-       /* read the data */
-       ret = i2c_smbus_read_byte(client);
-       if (ret >= 0)
-               *val = (u8)ret;
-       else
-               dev_err(&client->dev, "failed to read register %x\n", reg);
-
-       return ret;
-}
-
-/**
- * tsl2x7x_get_lux() - Reads and calculates current lux value.
- * @indio_dev: pointer to 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)
-               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 STATUS 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,
-                               "failed to read. err=%x\n", ret);
-                       goto out_unlock;
-               }
-       }
-
-       /* clear any existing interrupt status */
-       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 - err = %d\n", 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) {
-               /* have no data, so return LAST VALUE */
-               ret = chip->als_cur_info.lux;
-               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, "ch1lux > ch0lux-return 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;
-}
-
-/**
- * tsl2x7x_get_prox() - Reads proximity data registers and updates
- *                      chip->prox_data.
- *
- * @indio_dev: pointer to IIO device
- */
-static int tsl2x7x_get_prox(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, "i2c err=%d\n", ret);
-               goto prox_poll_err;
-       }
-
-       switch (chip->id) {
-       case tsl2571:
-       case tsl2671:
-       case tmd2671:
-       case tsl2771:
-       case tmd2771:
-               if (!(status & TSL2X7X_STA_ADC_VALID))
-                       goto prox_poll_err;
-       break;
-       case tsl2572:
-       case tsl2672:
-       case tmd2672:
-       case tsl2772:
-       case tmd2772:
-               if (!(status & TSL2X7X_STA_PRX_VALID))
-                       goto prox_poll_err;
-       break;
-       }
-
-       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;
-}
-
-/**
- * tsl2x7x_defaults() - Populates the device nominal operating parameters
- *                      with those provided by a 'platform' data struct or
- *                      with prefined defaults.
- *
- * @chip:               pointer to device structure.
- */
-static void tsl2x7x_defaults(struct tsl2X7X_chip *chip)
-{
-       /* If Operational settings defined elsewhere.. */
-       if (chip->pdata && chip->pdata->platform_default_settings)
-               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);
-}
-
-/**
- * tsl2x7x_als_calibrate() -   Obtain single reading and calculate
- *                              the als_gain_trim.
- *
- * @indio_dev: pointer to IIO device
- */
-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,
-                       "failed to write CNTRL register, ret=%d\n", 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,
-                       "failed to write ctrl reg: ret=%d\n", 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;
-}
-
-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) & 0xFF;
-       chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] =
-                       (chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF;
-       chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
-                       (chip->tsl2x7x_settings.prox_thres_high) & 0xFF;
-       chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] =
-                       (chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF;
-
-       /* 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 register */
-       als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270;
-       if (!als_count)
-               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 ret;
-       }
-
-       /*
-        * 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,
-                               "failed on write to reg %d.\n", i);
-                       return ret;
-               }
-       }
-
-       mdelay(3);      /* 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 to clear Int status\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;
-}
-
-/**
- * tsl2x7x_invoke_change
- * @indio_dev: pointer to IIO device
- *
- * Obtain and lock both ALS and PROX resources,
- * determine and save device state (On/Off),
- * cycle device to implement updated parameter,
- * put device back into proper state, and unlock
- * resource.
- */
-static
-int tsl2x7x_invoke_change(struct iio_dev *indio_dev)
-{
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-       int device_status = chip->tsl2x7x_chip_status;
-
-       mutex_lock(&chip->als_mutex);
-       mutex_lock(&chip->prox_mutex);
-
-       if (device_status == TSL2X7X_CHIP_WORKING)
-               tsl2x7x_chip_off(indio_dev);
-
-       tsl2x7x_chip_on(indio_dev);
-
-       if (device_status != TSL2X7X_CHIP_WORKING)
-               tsl2x7x_chip_off(indio_dev);
-
-       mutex_unlock(&chip->prox_mutex);
-       mutex_unlock(&chip->als_mutex);
-
-       return 0;
-}
-
-static
-void tsl2x7x_prox_calculate(int *data, int length,
-                           struct tsl2x7x_prox_stat *statP)
-{
-       int i;
-       int sample_sum;
-       int tmp;
-
-       if (!length)
-               length = 1;
-
-       sample_sum = 0;
-       statP->min = INT_MAX;
-       statP->max = INT_MIN;
-       for (i = 0; i < length; i++) {
-               sample_sum += data[i];
-               statP->min = min(statP->min, data[i]);
-               statP->max = max(statP->max, data[i]);
-       }
-
-       statP->mean = sample_sum / length;
-       sample_sum = 0;
-       for (i = 0; i < length; i++) {
-               tmp = data[i] - statP->mean;
-               sample_sum += tmp * tmp;
-       }
-       statP->stddev = int_sqrt((long)sample_sum / length);
-}
-
-/**
- * tsl2x7x_prox_cal() - Calculates std. and sets thresholds.
- * @indio_dev: pointer to IIO device
- *
- * Calculates a standard deviation based on the samples,
- * and sets the threshold accordingly.
- */
-static void tsl2x7x_prox_cal(struct iio_dev *indio_dev)
-{
-       int prox_history[MAX_SAMPLES_CAL + 1];
-       int i;
-       struct tsl2x7x_prox_stat prox_stat_data[2];
-       struct tsl2x7x_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,
-                       "max prox samples cal is too big: %d\n",
-                       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_get_prox(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 tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(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_to_iio_dev(dev);
-       bool value;
-
-       if (strtobool(buf, &value))
-               return -EINVAL;
-
-       if (value)
-               tsl2x7x_chip_on(indio_dev);
-       else
-               tsl2x7x_chip_off(indio_dev);
-
-       return len;
-}
-
-static ssize_t tsl2x7x_gain_available_show(struct device *dev,
-                                          struct device_attribute *attr,
-                                          char *buf)
-{
-       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
-
-       switch (chip->id) {
-       case tsl2571:
-       case tsl2671:
-       case tmd2671:
-       case tsl2771:
-       case tmd2771:
-               return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128");
-       }
-
-       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 tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
-       int y, z;
-
-       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
-       z = y * TSL2X7X_MIN_ITIME;
-       y /= 1000;
-       z %= 1000;
-
-       return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
-}
-
-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_to_iio_dev(dev);
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-       struct tsl2x7x_parse_result result;
-       int ret;
-
-       ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
-       if (ret)
-               return ret;
-
-       result.fract /= 3;
-       chip->tsl2x7x_settings.als_time =
-                       TSL2X7X_MAX_TIMER_CNT - (u8)result.fract;
-
-       dev_info(&chip->client->dev, "%s: als time = %d",
-                __func__, chip->tsl2x7x_settings.als_time);
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return IIO_VAL_INT_PLUS_MICRO;
-}
-
-static IIO_CONST_ATTR(in_illuminance0_integration_time_available,
-               ".00272 - .696");
-
-static ssize_t tsl2x7x_als_cal_target_show(struct device *dev,
-                                          struct device_attribute *attr,
-                                          char *buf)
-{
-       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(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_to_iio_dev(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;
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return len;
-}
-
-/* persistence settings */
-static ssize_t tsl2x7x_als_persistence_show(struct device *dev,
-                                           struct device_attribute *attr,
-                                           char *buf)
-{
-       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
-       int y, z, filter_delay;
-
-       /* Determine integration time */
-       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
-       z = y * TSL2X7X_MIN_ITIME;
-       filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F);
-       y = filter_delay / 1000;
-       z = filter_delay % 1000;
-
-       return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
-}
-
-static ssize_t tsl2x7x_als_persistence_store(struct device *dev,
-                                            struct device_attribute *attr,
-                                            const char *buf, size_t len)
-{
-       struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-       struct tsl2x7x_parse_result result;
-       int y, z, filter_delay;
-       int ret;
-
-       ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
-       if (ret)
-               return ret;
-
-       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
-       z = y * TSL2X7X_MIN_ITIME;
-
-       filter_delay =
-               DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
-
-       chip->tsl2x7x_settings.persistence &= 0xF0;
-       chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F);
-
-       dev_info(&chip->client->dev, "%s: als persistence = %d",
-                __func__, filter_delay);
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return IIO_VAL_INT_PLUS_MICRO;
-}
-
-static ssize_t tsl2x7x_prox_persistence_show(struct device *dev,
-                                            struct device_attribute *attr,
-                                            char *buf)
-{
-       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
-       int y, z, filter_delay;
-
-       /* Determine integration time */
-       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
-       z = y * TSL2X7X_MIN_ITIME;
-       filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4);
-       y = filter_delay / 1000;
-       z = filter_delay % 1000;
-
-       return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
-}
-
-static ssize_t tsl2x7x_prox_persistence_store(struct device *dev,
-                                             struct device_attribute *attr,
-                                             const char *buf, size_t len)
-{
-       struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-       struct tsl2x7x_parse_result result;
-       int y, z, filter_delay;
-       int ret;
-
-       ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
-       if (ret)
-               return ret;
-
-       y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
-       z = y * TSL2X7X_MIN_ITIME;
-
-       filter_delay =
-               DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
-
-       chip->tsl2x7x_settings.persistence &= 0x0F;
-       chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0);
-
-       dev_info(&chip->client->dev, "%s: prox persistence = %d",
-                __func__, filter_delay);
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return IIO_VAL_INT_PLUS_MICRO;
-}
-
-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_to_iio_dev(dev);
-       bool value;
-
-       if (strtobool(buf, &value))
-               return -EINVAL;
-
-       if (value)
-               tsl2x7x_als_calibrate(indio_dev);
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return len;
-}
-
-static ssize_t tsl2x7x_luxtable_show(struct device *dev,
-                                    struct device_attribute *attr,
-                                    char *buf)
-{
-       struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
-       int i = 0;
-       int offset = 0;
-
-       while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) {
-               offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,%u,",
-                       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_to_iio_dev(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));
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       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_to_iio_dev(dev);
-       bool value;
-
-       if (strtobool(buf, &value))
-               return -EINVAL;
-
-       if (value)
-               tsl2x7x_prox_cal(indio_dev);
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return len;
-}
-
-static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev,
-                                        const struct iio_chan_spec *chan,
-                                        enum iio_event_type type,
-                                        enum iio_event_direction dir)
-{
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-       int ret;
-
-       if (chan->type == 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,
-                                         const struct iio_chan_spec *chan,
-                                         enum iio_event_type type,
-                                         enum iio_event_direction dir,
-                                         int val)
-{
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-
-       if (chan->type == 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;
-       }
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return 0;
-}
-
-static int tsl2x7x_write_thresh(struct iio_dev *indio_dev,
-                               const struct iio_chan_spec *chan,
-                               enum iio_event_type type,
-                               enum iio_event_direction dir,
-                               enum iio_event_info info,
-                               int val, int val2)
-{
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-
-       if (chan->type == IIO_INTENSITY) {
-               switch (dir) {
-               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 (dir) {
-               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;
-               }
-       }
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return 0;
-}
-
-static int tsl2x7x_read_thresh(struct iio_dev *indio_dev,
-                              const struct iio_chan_spec *chan,
-                              enum iio_event_type type,
-                              enum iio_event_direction dir,
-                                  enum iio_event_info info,
-                              int *val, int *val2)
-{
-       struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-
-       if (chan->type == IIO_INTENSITY) {
-               switch (dir) {
-               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 (dir) {
-               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 IIO_VAL_INT;
-}
-
-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 IIO_CHAN_INFO_PROCESSED:
-               switch (chan->type) {
-               case IIO_LIGHT:
-                       tsl2x7x_get_lux(indio_dev);
-                       *val = chip->als_cur_info.lux;
-                       ret = IIO_VAL_INT;
-                       break;
-               default:
-                       return -EINVAL;
-               }
-               break;
-       case IIO_CHAN_INFO_RAW:
-               switch (chan->type) {
-               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_get_prox(indio_dev);
-                       *val = chip->prox_data;
-                       ret = IIO_VAL_INT;
-                       break;
-               default:
-                       return -EINVAL;
-               }
-               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:
-                               switch (chip->id) {
-                               case tsl2572:
-                               case tsl2672:
-                               case tmd2672:
-                               case tsl2772:
-                               case tmd2772:
-                                       return -EINVAL;
-                               }
-                               chip->tsl2x7x_settings.als_gain = 3;
-                               break;
-                       case 128:
-                               switch (chip->id) {
-                               case tsl2571:
-                               case tsl2671:
-                               case tmd2671:
-                               case tsl2771:
-                               case tmd2771:
-                                       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;
-       }
-
-       tsl2x7x_invoke_change(indio_dev);
-
-       return 0;
-}
-
-static DEVICE_ATTR(power_state, 0644,
-               tsl2x7x_power_state_show, tsl2x7x_power_state_store);
-
-static DEVICE_ATTR(in_proximity0_calibscale_available, 0444,
-               tsl2x7x_prox_gain_available_show, NULL);
-
-static DEVICE_ATTR(in_illuminance0_calibscale_available, 0444,
-               tsl2x7x_gain_available_show, NULL);
-
-static DEVICE_ATTR(in_illuminance0_integration_time, 0644,
-               tsl2x7x_als_time_show, tsl2x7x_als_time_store);
-
-static DEVICE_ATTR(in_illuminance0_target_input, 0644,
-               tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store);
-
-static DEVICE_ATTR(in_illuminance0_calibrate, 0200, NULL,
-               tsl2x7x_do_calibrate);
-
-static DEVICE_ATTR(in_proximity0_calibrate, 0200, NULL,
-               tsl2x7x_do_prox_calibrate);
-
-static DEVICE_ATTR(in_illuminance0_lux_table, 0644,
-               tsl2x7x_luxtable_show, tsl2x7x_luxtable_store);
-
-static DEVICE_ATTR(in_intensity0_thresh_period, 0644,
-               tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store);
-
-static DEVICE_ATTR(in_proximity0_thresh_period,  0644,
-               tsl2x7x_prox_persistence_show, tsl2x7x_prox_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;
-       case tmd2671:
-       case tmd2771:
-               return (*id & 0xf0) == HALIBUT_ID;
-       case tsl2572:
-       case tsl2672:
-       case tmd2672:
-       case tsl2772:
-       case tmd2772:
-               return (*id & 0xf0) == SWORDFISH_ID;
-       }
-
-       return -EINVAL;
-}
-
-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(indio_dev);
-       int ret;
-       u8 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_get_prox(indio_dev); /* freshen data for ABI */
-               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); /* freshen data for ABI */
-               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,
-                       "Failed to clear irq from event handler. err = %d\n",
-                       ret);
-
-       return IRQ_HANDLED;
-}
-
-static struct attribute *tsl2x7x_ALS_device_attrs[] = {
-       &dev_attr_power_state.attr,
-       &dev_attr_in_illuminance0_calibscale_available.attr,
-       &dev_attr_in_illuminance0_integration_time.attr,
-       &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
-       &dev_attr_in_illuminance0_target_input.attr,
-       &dev_attr_in_illuminance0_calibrate.attr,
-       &dev_attr_in_illuminance0_lux_table.attr,
-       NULL
-};
-
-static struct attribute *tsl2x7x_PRX_device_attrs[] = {
-       &dev_attr_power_state.attr,
-       &dev_attr_in_proximity0_calibrate.attr,
-       NULL
-};
-
-static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
-       &dev_attr_power_state.attr,
-       &dev_attr_in_illuminance0_calibscale_available.attr,
-       &dev_attr_in_illuminance0_integration_time.attr,
-       &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
-       &dev_attr_in_illuminance0_target_input.attr,
-       &dev_attr_in_illuminance0_calibrate.attr,
-       &dev_attr_in_illuminance0_lux_table.attr,
-       &dev_attr_in_proximity0_calibrate.attr,
-       NULL
-};
-
-static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
-       &dev_attr_power_state.attr,
-       &dev_attr_in_proximity0_calibrate.attr,
-       &dev_attr_in_proximity0_calibscale_available.attr,
-       NULL
-};
-
-static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
-       &dev_attr_power_state.attr,
-       &dev_attr_in_illuminance0_calibscale_available.attr,
-       &dev_attr_in_illuminance0_integration_time.attr,
-       &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
-       &dev_attr_in_illuminance0_target_input.attr,
-       &dev_attr_in_illuminance0_calibrate.attr,
-       &dev_attr_in_illuminance0_lux_table.attr,
-       &dev_attr_in_proximity0_calibrate.attr,
-       &dev_attr_in_proximity0_calibscale_available.attr,
-       NULL
-};
-
-static struct attribute *tsl2X7X_ALS_event_attrs[] = {
-       &dev_attr_in_intensity0_thresh_period.attr,
-       NULL,
-};
-
-static struct attribute *tsl2X7X_PRX_event_attrs[] = {
-       &dev_attr_in_proximity0_thresh_period.attr,
-       NULL,
-};
-
-static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = {
-       &dev_attr_in_intensity0_thresh_period.attr,
-       &dev_attr_in_proximity0_thresh_period.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 attribute_group tsl2X7X_event_attr_group_tbl[] = {
-       [ALS] = {
-               .attrs = tsl2X7X_ALS_event_attrs,
-               .name = "events",
-       },
-       [PRX] = {
-               .attrs = tsl2X7X_PRX_event_attrs,
-               .name = "events",
-       },
-       [ALSPRX] = {
-               .attrs = tsl2X7X_ALSPRX_event_attrs,
-               .name = "events",
-       },
-};
-
-static const struct iio_info tsl2X7X_device_info[] = {
-       [ALS] = {
-               .attrs = &tsl2X7X_device_attr_group_tbl[ALS],
-               .event_attrs = &tsl2X7X_event_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],
-               .event_attrs = &tsl2X7X_event_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],
-               .event_attrs = &tsl2X7X_event_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],
-               .event_attrs = &tsl2X7X_event_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,
-       },
-       [ALSPRX2] = {
-               .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2],
-               .event_attrs = &tsl2X7X_event_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,
-       },
-};
-
-static const struct iio_event_spec tsl2x7x_events[] = {
-       {
-               .type = IIO_EV_TYPE_THRESH,
-               .dir = IIO_EV_DIR_RISING,
-               .mask_separate = BIT(IIO_EV_INFO_VALUE) |
-                       BIT(IIO_EV_INFO_ENABLE),
-       }, {
-               .type = IIO_EV_TYPE_THRESH,
-               .dir = IIO_EV_DIR_FALLING,
-               .mask_separate = BIT(IIO_EV_INFO_VALUE) |
-                       BIT(IIO_EV_INFO_ENABLE),
-       },
-};
-
-static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
-       [ALS] = {
-               .channel = {
-                       {
-                       .type = IIO_LIGHT,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
-                       }, {
-                       .type = IIO_INTENSITY,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-                               BIT(IIO_CHAN_INFO_CALIBSCALE) |
-                               BIT(IIO_CHAN_INFO_CALIBBIAS),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       }, {
-                       .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,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       },
-               },
-       .chan_table_elements = 1,
-       .info = &tsl2X7X_device_info[PRX],
-       },
-       [ALSPRX] = {
-               .channel = {
-                       {
-                       .type = IIO_LIGHT,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED)
-                       }, {
-                       .type = IIO_INTENSITY,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-                               BIT(IIO_CHAN_INFO_CALIBSCALE) |
-                               BIT(IIO_CHAN_INFO_CALIBBIAS),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       }, {
-                       .type = IIO_INTENSITY,
-                       .indexed = 1,
-                       .channel = 1,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-                       }, {
-                       .type = IIO_PROXIMITY,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       },
-               },
-       .chan_table_elements = 4,
-       .info = &tsl2X7X_device_info[ALSPRX],
-       },
-       [PRX2] = {
-               .channel = {
-                       {
-                       .type = IIO_PROXIMITY,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-                               BIT(IIO_CHAN_INFO_CALIBSCALE),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       },
-               },
-       .chan_table_elements = 1,
-       .info = &tsl2X7X_device_info[PRX2],
-       },
-       [ALSPRX2] = {
-               .channel = {
-                       {
-                       .type = IIO_LIGHT,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
-                       }, {
-                       .type = IIO_INTENSITY,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-                               BIT(IIO_CHAN_INFO_CALIBSCALE) |
-                               BIT(IIO_CHAN_INFO_CALIBBIAS),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       }, {
-                       .type = IIO_INTENSITY,
-                       .indexed = 1,
-                       .channel = 1,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-                       }, {
-                       .type = IIO_PROXIMITY,
-                       .indexed = 1,
-                       .channel = 0,
-                       .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-                               BIT(IIO_CHAN_INFO_CALIBSCALE),
-                       .event_spec = tsl2x7x_events,
-                       .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
-                       },
-               },
-       .chan_table_elements = 4,
-       .info = &tsl2X7X_device_info[ALSPRX2],
-       },
-};
-
-static int 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 = devm_iio_device_alloc(&clientp->dev, 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)
-               return ret;
-
-       if ((!tsl2x7x_device_id(&device_id, id->driver_data)) ||
-           (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) {
-               dev_info(&chip->client->dev,
-                        "%s: i2c device found does not match expected id\n",
-                               __func__);
-               return -EINVAL;
-       }
-
-       ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
-       if (ret < 0) {
-               dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n",
-                       ret);
-               return ret;
-       }
-
-       /*
-        * 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 = dev_get_platdata(&clientp->dev);
-       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 = devm_request_threaded_irq(&clientp->dev, 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__);
-                       return ret;
-               }
-       }
-
-       /* 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__);
-               return ret;
-       }
-
-       dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
-
-       return 0;
-}
-
-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 tsl2x7x_remove(struct i2c_client *client)
-{
-       struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-       tsl2x7x_chip_off(indio_dev);
-
-       iio_device_unregister(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 = tsl2x7x_remove,
-};
-
-module_i2c_driver(tsl2x7x_driver);
-
-MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>");
-MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver");
-MODULE_LICENSE("GPL");