# Makefile for industrial I/O Light sensors
#
-obj-$(CONFIG_TSL2x7x) += tsl2x7x_core.o
+obj-$(CONFIG_TSL2x7x) += tsl2x7x.o
--- /dev/null
+/*
+ * 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");
+++ /dev/null
-/*
- * 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");
projects / linux-2.6-microblaze.git / commitdiff