[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/iio/light/tsl2772.c b/src/kernel/linux/v4.19/drivers/iio/light/tsl2772.c
new file mode 100644
index 0000000..df5b2a0
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/iio/light/tsl2772.c
@@ -0,0 +1,1802 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device driver for monitoring ambient light intensity in (lux) and proximity
+ * detection (prox) within the TAOS TSL2571, TSL2671, TMD2671, TSL2771, TMD2771,
+ * TSL2572, TSL2672, TMD2672, TSL2772, and TMD2772 devices.
+ *
+ * Copyright (c) 2012, TAOS Corporation.
+ * Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org>
+ */
+
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/platform_data/tsl2772.h>
+
+/* Cal defs */
+#define PROX_STAT_CAL 0
+#define PROX_STAT_SAMP 1
+#define MAX_SAMPLES_CAL 200
+
+/* TSL2772 Device ID */
+#define TRITON_ID 0x00
+#define SWORDFISH_ID 0x30
+#define HALIBUT_ID 0x20
+
+/* Lux calculation constants */
+#define TSL2772_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.
+ */
+
+/* Register offsets */
+#define TSL2772_MAX_CONFIG_REG 16
+
+/* Device Registers and Masks */
+#define TSL2772_CNTRL 0x00
+#define TSL2772_ALS_TIME 0X01
+#define TSL2772_PRX_TIME 0x02
+#define TSL2772_WAIT_TIME 0x03
+#define TSL2772_ALS_MINTHRESHLO 0X04
+#define TSL2772_ALS_MINTHRESHHI 0X05
+#define TSL2772_ALS_MAXTHRESHLO 0X06
+#define TSL2772_ALS_MAXTHRESHHI 0X07
+#define TSL2772_PRX_MINTHRESHLO 0X08
+#define TSL2772_PRX_MINTHRESHHI 0X09
+#define TSL2772_PRX_MAXTHRESHLO 0X0A
+#define TSL2772_PRX_MAXTHRESHHI 0X0B
+#define TSL2772_PERSISTENCE 0x0C
+#define TSL2772_ALS_PRX_CONFIG 0x0D
+#define TSL2772_PRX_COUNT 0x0E
+#define TSL2772_GAIN 0x0F
+#define TSL2772_NOTUSED 0x10
+#define TSL2772_REVID 0x11
+#define TSL2772_CHIPID 0x12
+#define TSL2772_STATUS 0x13
+#define TSL2772_ALS_CHAN0LO 0x14
+#define TSL2772_ALS_CHAN0HI 0x15
+#define TSL2772_ALS_CHAN1LO 0x16
+#define TSL2772_ALS_CHAN1HI 0x17
+#define TSL2772_PRX_LO 0x18
+#define TSL2772_PRX_HI 0x19
+
+/* tsl2772 cmd reg masks */
+#define TSL2772_CMD_REG 0x80
+#define TSL2772_CMD_SPL_FN 0x60
+#define TSL2772_CMD_REPEAT_PROTO 0x00
+#define TSL2772_CMD_AUTOINC_PROTO 0x20
+
+#define TSL2772_CMD_PROX_INT_CLR 0X05
+#define TSL2772_CMD_ALS_INT_CLR 0x06
+#define TSL2772_CMD_PROXALS_INT_CLR 0X07
+
+/* tsl2772 cntrl reg masks */
+#define TSL2772_CNTL_ADC_ENBL 0x02
+#define TSL2772_CNTL_PWR_ON 0x01
+
+/* tsl2772 status reg masks */
+#define TSL2772_STA_ADC_VALID 0x01
+#define TSL2772_STA_PRX_VALID 0x02
+#define TSL2772_STA_ADC_PRX_VALID (TSL2772_STA_ADC_VALID | \
+ TSL2772_STA_PRX_VALID)
+#define TSL2772_STA_ALS_INTR 0x10
+#define TSL2772_STA_PRX_INTR 0x20
+
+/* tsl2772 cntrl reg masks */
+#define TSL2772_CNTL_REG_CLEAR 0x00
+#define TSL2772_CNTL_PROX_INT_ENBL 0X20
+#define TSL2772_CNTL_ALS_INT_ENBL 0X10
+#define TSL2772_CNTL_WAIT_TMR_ENBL 0X08
+#define TSL2772_CNTL_PROX_DET_ENBL 0X04
+#define TSL2772_CNTL_PWRON 0x01
+#define TSL2772_CNTL_ALSPON_ENBL 0x03
+#define TSL2772_CNTL_INTALSPON_ENBL 0x13
+#define TSL2772_CNTL_PROXPON_ENBL 0x0F
+#define TSL2772_CNTL_INTPROXPON_ENBL 0x2F
+
+#define TSL2772_ALS_GAIN_TRIM_MIN 250
+#define TSL2772_ALS_GAIN_TRIM_MAX 4000
+
+/* Device family members */
+enum {
+ tsl2571,
+ tsl2671,
+ tmd2671,
+ tsl2771,
+ tmd2771,
+ tsl2572,
+ tsl2672,
+ tmd2672,
+ tsl2772,
+ tmd2772
+};
+
+enum {
+ TSL2772_CHIP_UNKNOWN = 0,
+ TSL2772_CHIP_WORKING = 1,
+ TSL2772_CHIP_SUSPENDED = 2
+};
+
+/* Per-device data */
+struct tsl2772_als_info {
+ u16 als_ch0;
+ u16 als_ch1;
+ u16 lux;
+};
+
+struct tsl2772_chip_info {
+ int chan_table_elements;
+ struct iio_chan_spec channel_with_events[4];
+ struct iio_chan_spec channel_without_events[4];
+ const struct iio_info *info;
+};
+
+struct tsl2772_chip {
+ kernel_ulong_t id;
+ struct mutex prox_mutex;
+ struct mutex als_mutex;
+ struct i2c_client *client;
+ u16 prox_data;
+ struct tsl2772_als_info als_cur_info;
+ struct tsl2772_settings settings;
+ struct tsl2772_platform_data *pdata;
+ int als_gain_time_scale;
+ int als_saturation;
+ int tsl2772_chip_status;
+ u8 tsl2772_config[TSL2772_MAX_CONFIG_REG];
+ const struct tsl2772_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 tsl2772_lux tsl2772_device_lux[TSL2772_MAX_LUX_TABLE_SIZE];
+};
+
+/*
+ * Different devices require different coefficents, and these numbers were
+ * derived from the 'Lux Equation' section of the various device datasheets.
+ * All of these coefficients assume a Glass Attenuation (GA) factor of 1.
+ * The coefficients are multiplied by 1000 to avoid floating point operations.
+ * The two rows in each table correspond to the Lux1 and Lux2 equations from
+ * the datasheets.
+ */
+static const struct tsl2772_lux tsl2x71_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
+ { 53000, 106000 },
+ { 31800, 53000 },
+ { 0, 0 },
+};
+
+static const struct tsl2772_lux tmd2x71_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
+ { 24000, 48000 },
+ { 14400, 24000 },
+ { 0, 0 },
+};
+
+static const struct tsl2772_lux tsl2x72_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
+ { 60000, 112200 },
+ { 37800, 60000 },
+ { 0, 0 },
+};
+
+static const struct tsl2772_lux tmd2x72_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
+ { 20000, 35000 },
+ { 12600, 20000 },
+ { 0, 0 },
+};
+
+static const struct tsl2772_lux *tsl2772_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 tsl2772_settings tsl2772_default_settings = {
+ .als_time = 255, /* 2.72 / 2.73 ms */
+ .als_gain = 0,
+ .prox_time = 255, /* 2.72 / 2.73 ms */
+ .prox_gain = 0,
+ .wait_time = 255,
+ .als_prox_config = 0,
+ .als_gain_trim = 1000,
+ .als_cal_target = 150,
+ .als_persistence = 1,
+ .als_interrupt_en = false,
+ .als_thresh_low = 200,
+ .als_thresh_high = 256,
+ .prox_persistence = 1,
+ .prox_interrupt_en = false,
+ .prox_thres_low = 0,
+ .prox_thres_high = 512,
+ .prox_max_samples_cal = 30,
+ .prox_pulse_count = 8,
+ .prox_diode = TSL2772_DIODE1,
+ .prox_power = TSL2772_100_mA
+};
+
+static const s16 tsl2772_als_gain[] = {
+ 1,
+ 8,
+ 16,
+ 120
+};
+
+static const s16 tsl2772_prox_gain[] = {
+ 1,
+ 2,
+ 4,
+ 8
+};
+
+static const int tsl2772_int_time_avail[][6] = {
+ [tsl2571] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tsl2671] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tmd2671] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tsl2771] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tmd2771] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tsl2572] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tsl2672] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tmd2672] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tsl2772] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tmd2772] = { 0, 2730, 0, 2730, 0, 699000 },
+};
+
+static int tsl2772_int_calibscale_avail[] = { 1, 8, 16, 120 };
+
+static int tsl2772_prox_calibscale_avail[] = { 1, 2, 4, 8 };
+
+/* Channel variations */
+enum {
+ ALS,
+ PRX,
+ ALSPRX,
+ PRX2,
+ ALSPRX2,
+};
+
+static const u8 device_channel_config[] = {
+ [tsl2571] = ALS,
+ [tsl2671] = PRX,
+ [tmd2671] = PRX,
+ [tsl2771] = ALSPRX,
+ [tmd2771] = ALSPRX,
+ [tsl2572] = ALS,
+ [tsl2672] = PRX2,
+ [tmd2672] = PRX2,
+ [tsl2772] = ALSPRX2,
+ [tmd2772] = ALSPRX2
+};
+
+static int tsl2772_read_status(struct tsl2772_chip *chip)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(chip->client,
+ TSL2772_CMD_REG | TSL2772_STATUS);
+ if (ret < 0)
+ dev_err(&chip->client->dev,
+ "%s: failed to read STATUS register: %d\n", __func__,
+ ret);
+
+ return ret;
+}
+
+static int tsl2772_write_control_reg(struct tsl2772_chip *chip, u8 data)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2772_CMD_REG | TSL2772_CNTRL, data);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to write to control register %x: %d\n",
+ __func__, data, ret);
+ }
+
+ return ret;
+}
+
+static int tsl2772_read_autoinc_regs(struct tsl2772_chip *chip, int lower_reg,
+ int upper_reg)
+{
+ u8 buf[2];
+ int ret;
+
+ ret = i2c_smbus_write_byte(chip->client,
+ TSL2772_CMD_REG | TSL2772_CMD_AUTOINC_PROTO |
+ lower_reg);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to enable auto increment protocol: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = i2c_smbus_read_byte_data(chip->client,
+ TSL2772_CMD_REG | lower_reg);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to read from register %x: %d\n", __func__,
+ lower_reg, ret);
+ return ret;
+ }
+ buf[0] = ret;
+
+ ret = i2c_smbus_read_byte_data(chip->client,
+ TSL2772_CMD_REG | upper_reg);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to read from register %x: %d\n", __func__,
+ upper_reg, ret);
+ return ret;
+ }
+ buf[1] = ret;
+
+ ret = i2c_smbus_write_byte(chip->client,
+ TSL2772_CMD_REG | TSL2772_CMD_REPEAT_PROTO |
+ lower_reg);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to enable repeated byte protocol: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ return le16_to_cpup((const __le16 *)&buf[0]);
+}
+
+/**
+ * tsl2772_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. The raw values are multiplied
+ * by a device-specific scale factor, and divided by the integration time and
+ * device gain. The code supports multiple lux equations through the lux table
+ * coefficients. A lux gain trim is applied to each lux equation, and then the
+ * maximum lux within the interval 0..65535 is selected.
+ */
+static int tsl2772_get_lux(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ struct tsl2772_lux *p;
+ int max_lux, ret;
+ bool overflow;
+
+ mutex_lock(&chip->als_mutex);
+
+ if (chip->tsl2772_chip_status != TSL2772_CHIP_WORKING) {
+ dev_err(&chip->client->dev, "%s: device is not enabled\n",
+ __func__);
+ ret = -EBUSY;
+ goto out_unlock;
+ }
+
+ ret = tsl2772_read_status(chip);
+ if (ret < 0)
+ goto out_unlock;
+
+ if (!(ret & TSL2772_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;
+ }
+
+ ret = tsl2772_read_autoinc_regs(chip, TSL2772_ALS_CHAN0LO,
+ TSL2772_ALS_CHAN0HI);
+ if (ret < 0)
+ goto out_unlock;
+ chip->als_cur_info.als_ch0 = ret;
+
+ ret = tsl2772_read_autoinc_regs(chip, TSL2772_ALS_CHAN1LO,
+ TSL2772_ALS_CHAN1HI);
+ if (ret < 0)
+ goto out_unlock;
+ chip->als_cur_info.als_ch1 = ret;
+
+ if (chip->als_cur_info.als_ch0 >= chip->als_saturation) {
+ max_lux = TSL2772_LUX_CALC_OVER_FLOW;
+ goto update_struct_with_max_lux;
+ }
+
+ if (!chip->als_cur_info.als_ch0) {
+ /* have no data, so return LAST VALUE */
+ ret = chip->als_cur_info.lux;
+ goto out_unlock;
+ }
+
+ max_lux = 0;
+ overflow = false;
+ for (p = (struct tsl2772_lux *)chip->tsl2772_device_lux; p->ch0 != 0;
+ p++) {
+ int lux;
+
+ lux = ((chip->als_cur_info.als_ch0 * p->ch0) -
+ (chip->als_cur_info.als_ch1 * p->ch1)) /
+ chip->als_gain_time_scale;
+
+ /*
+ * The als_gain_trim can have a value within the range 250..4000
+ * and is a multiplier for the lux. A trim of 1000 makes no
+ * changes to the lux, less than 1000 scales it down, and
+ * greater than 1000 scales it up.
+ */
+ lux = (lux * chip->settings.als_gain_trim) / 1000;
+
+ if (lux > TSL2772_LUX_CALC_OVER_FLOW) {
+ overflow = true;
+ continue;
+ }
+
+ max_lux = max(max_lux, lux);
+ }
+
+ if (overflow && max_lux == 0)
+ max_lux = TSL2772_LUX_CALC_OVER_FLOW;
+
+update_struct_with_max_lux:
+ chip->als_cur_info.lux = max_lux;
+ ret = max_lux;
+
+out_unlock:
+ mutex_unlock(&chip->als_mutex);
+
+ return ret;
+}
+
+/**
+ * tsl2772_get_prox() - Reads proximity data registers and updates
+ * chip->prox_data.
+ *
+ * @indio_dev: pointer to IIO device
+ */
+static int tsl2772_get_prox(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&chip->prox_mutex);
+
+ ret = tsl2772_read_status(chip);
+ if (ret < 0)
+ goto prox_poll_err;
+
+ switch (chip->id) {
+ case tsl2571:
+ case tsl2671:
+ case tmd2671:
+ case tsl2771:
+ case tmd2771:
+ if (!(ret & TSL2772_STA_ADC_VALID)) {
+ ret = -EINVAL;
+ goto prox_poll_err;
+ }
+ break;
+ case tsl2572:
+ case tsl2672:
+ case tmd2672:
+ case tsl2772:
+ case tmd2772:
+ if (!(ret & TSL2772_STA_PRX_VALID)) {
+ ret = -EINVAL;
+ goto prox_poll_err;
+ }
+ break;
+ }
+
+ ret = tsl2772_read_autoinc_regs(chip, TSL2772_PRX_LO, TSL2772_PRX_HI);
+ if (ret < 0)
+ goto prox_poll_err;
+ chip->prox_data = ret;
+
+prox_poll_err:
+ mutex_unlock(&chip->prox_mutex);
+
+ return ret;
+}
+
+/**
+ * tsl2772_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 tsl2772_defaults(struct tsl2772_chip *chip)
+{
+ /* If Operational settings defined elsewhere.. */
+ if (chip->pdata && chip->pdata->platform_default_settings)
+ memcpy(&chip->settings, chip->pdata->platform_default_settings,
+ sizeof(tsl2772_default_settings));
+ else
+ memcpy(&chip->settings, &tsl2772_default_settings,
+ sizeof(tsl2772_default_settings));
+
+ /* Load up the proper lux table. */
+ if (chip->pdata && chip->pdata->platform_lux_table[0].ch0 != 0)
+ memcpy(chip->tsl2772_device_lux,
+ chip->pdata->platform_lux_table,
+ sizeof(chip->pdata->platform_lux_table));
+ else
+ memcpy(chip->tsl2772_device_lux,
+ tsl2772_default_lux_table_group[chip->id],
+ TSL2772_DEFAULT_TABLE_BYTES);
+}
+
+/**
+ * tsl2772_als_calibrate() - Obtain single reading and calculate
+ * the als_gain_trim.
+ *
+ * @indio_dev: pointer to IIO device
+ */
+static int tsl2772_als_calibrate(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ int ret, lux_val;
+
+ ret = i2c_smbus_read_byte_data(chip->client,
+ TSL2772_CMD_REG | TSL2772_CNTRL);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to read from the CNTRL register\n",
+ __func__);
+ return ret;
+ }
+
+ if ((ret & (TSL2772_CNTL_ADC_ENBL | TSL2772_CNTL_PWR_ON))
+ != (TSL2772_CNTL_ADC_ENBL | TSL2772_CNTL_PWR_ON)) {
+ dev_err(&chip->client->dev,
+ "%s: Device is not powered on and/or ADC is not enabled\n",
+ __func__);
+ return -EINVAL;
+ } else if ((ret & TSL2772_STA_ADC_VALID) != TSL2772_STA_ADC_VALID) {
+ dev_err(&chip->client->dev,
+ "%s: The two ADC channels have not completed an integration cycle\n",
+ __func__);
+ return -ENODATA;
+ }
+
+ lux_val = tsl2772_get_lux(indio_dev);
+ if (lux_val < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to get lux\n", __func__);
+ return lux_val;
+ }
+ if (lux_val == 0)
+ return -ERANGE;
+
+ ret = (chip->settings.als_cal_target * chip->settings.als_gain_trim) /
+ lux_val;
+ if (ret < TSL2772_ALS_GAIN_TRIM_MIN || ret > TSL2772_ALS_GAIN_TRIM_MAX)
+ return -ERANGE;
+
+ chip->settings.als_gain_trim = ret;
+
+ return ret;
+}
+
+static int tsl2772_chip_on(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ int ret, i, als_count, als_time_us;
+ u8 *dev_reg, reg_val;
+
+ /* Non calculated parameters */
+ chip->tsl2772_config[TSL2772_ALS_TIME] = chip->settings.als_time;
+ chip->tsl2772_config[TSL2772_PRX_TIME] = chip->settings.prox_time;
+ chip->tsl2772_config[TSL2772_WAIT_TIME] = chip->settings.wait_time;
+ chip->tsl2772_config[TSL2772_ALS_PRX_CONFIG] =
+ chip->settings.als_prox_config;
+
+ chip->tsl2772_config[TSL2772_ALS_MINTHRESHLO] =
+ (chip->settings.als_thresh_low) & 0xFF;
+ chip->tsl2772_config[TSL2772_ALS_MINTHRESHHI] =
+ (chip->settings.als_thresh_low >> 8) & 0xFF;
+ chip->tsl2772_config[TSL2772_ALS_MAXTHRESHLO] =
+ (chip->settings.als_thresh_high) & 0xFF;
+ chip->tsl2772_config[TSL2772_ALS_MAXTHRESHHI] =
+ (chip->settings.als_thresh_high >> 8) & 0xFF;
+ chip->tsl2772_config[TSL2772_PERSISTENCE] =
+ (chip->settings.prox_persistence & 0xFF) << 4 |
+ (chip->settings.als_persistence & 0xFF);
+
+ chip->tsl2772_config[TSL2772_PRX_COUNT] =
+ chip->settings.prox_pulse_count;
+ chip->tsl2772_config[TSL2772_PRX_MINTHRESHLO] =
+ (chip->settings.prox_thres_low) & 0xFF;
+ chip->tsl2772_config[TSL2772_PRX_MINTHRESHHI] =
+ (chip->settings.prox_thres_low >> 8) & 0xFF;
+ chip->tsl2772_config[TSL2772_PRX_MAXTHRESHLO] =
+ (chip->settings.prox_thres_high) & 0xFF;
+ chip->tsl2772_config[TSL2772_PRX_MAXTHRESHHI] =
+ (chip->settings.prox_thres_high >> 8) & 0xFF;
+
+ /* and make sure we're not already on */
+ if (chip->tsl2772_chip_status == TSL2772_CHIP_WORKING) {
+ /* if forcing a register update - turn off, then on */
+ dev_info(&chip->client->dev, "device is already enabled\n");
+ return -EINVAL;
+ }
+
+ /* Set the gain based on tsl2772_settings struct */
+ chip->tsl2772_config[TSL2772_GAIN] =
+ (chip->settings.als_gain & 0xFF) |
+ ((chip->settings.prox_gain & 0xFF) << 2) |
+ (chip->settings.prox_diode << 4) |
+ (chip->settings.prox_power << 6);
+
+ /* set chip time scaling and saturation */
+ als_count = 256 - chip->settings.als_time;
+ als_time_us = als_count * tsl2772_int_time_avail[chip->id][3];
+ chip->als_saturation = als_count * 768; /* 75% of full scale */
+ chip->als_gain_time_scale = als_time_us *
+ tsl2772_als_gain[chip->settings.als_gain];
+
+ /*
+ * TSL2772 Specific power-on / adc enable sequence
+ * Power on the device 1st.
+ */
+ ret = tsl2772_write_control_reg(chip, TSL2772_CNTL_PWR_ON);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Use the following shadow copy for our delay before enabling ADC.
+ * Write all the registers.
+ */
+ for (i = 0, dev_reg = chip->tsl2772_config;
+ i < TSL2772_MAX_CONFIG_REG; i++) {
+ int reg = TSL2772_CMD_REG + i;
+
+ ret = i2c_smbus_write_byte_data(chip->client, reg,
+ *dev_reg++);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to write to register %x: %d\n",
+ __func__, reg, ret);
+ return ret;
+ }
+ }
+
+ /* Power-on settling time */
+ usleep_range(3000, 3500);
+
+ reg_val = TSL2772_CNTL_PWR_ON | TSL2772_CNTL_ADC_ENBL |
+ TSL2772_CNTL_PROX_DET_ENBL;
+ if (chip->settings.als_interrupt_en)
+ reg_val |= TSL2772_CNTL_ALS_INT_ENBL;
+ if (chip->settings.prox_interrupt_en)
+ reg_val |= TSL2772_CNTL_PROX_INT_ENBL;
+
+ ret = tsl2772_write_control_reg(chip, reg_val);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte(chip->client,
+ TSL2772_CMD_REG | TSL2772_CMD_SPL_FN |
+ TSL2772_CMD_PROXALS_INT_CLR);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to clear interrupt status: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ chip->tsl2772_chip_status = TSL2772_CHIP_WORKING;
+
+ return ret;
+}
+
+static int tsl2772_chip_off(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+
+ /* turn device off */
+ chip->tsl2772_chip_status = TSL2772_CHIP_SUSPENDED;
+ return tsl2772_write_control_reg(chip, 0x00);
+}
+
+/**
+ * tsl2772_invoke_change - power cycle the device to implement the user
+ * parameters
+ * @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 tsl2772_invoke_change(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ int device_status = chip->tsl2772_chip_status;
+ int ret;
+
+ mutex_lock(&chip->als_mutex);
+ mutex_lock(&chip->prox_mutex);
+
+ if (device_status == TSL2772_CHIP_WORKING) {
+ ret = tsl2772_chip_off(indio_dev);
+ if (ret < 0)
+ goto unlock;
+ }
+
+ ret = tsl2772_chip_on(indio_dev);
+
+unlock:
+ mutex_unlock(&chip->prox_mutex);
+ mutex_unlock(&chip->als_mutex);
+
+ return ret;
+}
+
+static int tsl2772_prox_cal(struct iio_dev *indio_dev)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ int prox_history[MAX_SAMPLES_CAL + 1];
+ int i, ret, mean, max, sample_sum;
+
+ if (chip->settings.prox_max_samples_cal < 1 ||
+ chip->settings.prox_max_samples_cal > MAX_SAMPLES_CAL)
+ return -EINVAL;
+
+ for (i = 0; i < chip->settings.prox_max_samples_cal; i++) {
+ usleep_range(15000, 17500);
+ ret = tsl2772_get_prox(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ prox_history[i] = chip->prox_data;
+ }
+
+ sample_sum = 0;
+ max = INT_MIN;
+ for (i = 0; i < chip->settings.prox_max_samples_cal; i++) {
+ sample_sum += prox_history[i];
+ max = max(max, prox_history[i]);
+ }
+ mean = sample_sum / chip->settings.prox_max_samples_cal;
+
+ chip->settings.prox_thres_high = (max << 1) - mean;
+
+ return tsl2772_invoke_change(indio_dev);
+}
+
+static int tsl2772_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long mask)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBSCALE:
+ if (chan->type == IIO_INTENSITY) {
+ *length = ARRAY_SIZE(tsl2772_int_calibscale_avail);
+ *vals = tsl2772_int_calibscale_avail;
+ } else {
+ *length = ARRAY_SIZE(tsl2772_prox_calibscale_avail);
+ *vals = tsl2772_prox_calibscale_avail;
+ }
+ *type = IIO_VAL_INT;
+ return IIO_AVAIL_LIST;
+ case IIO_CHAN_INFO_INT_TIME:
+ *length = ARRAY_SIZE(tsl2772_int_time_avail[chip->id]);
+ *vals = tsl2772_int_time_avail[chip->id];
+ *type = IIO_VAL_INT_PLUS_MICRO;
+ return IIO_AVAIL_RANGE;
+ }
+
+ return -EINVAL;
+}
+
+static ssize_t in_illuminance0_target_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct tsl2772_chip *chip = iio_priv(dev_to_iio_dev(dev));
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", chip->settings.als_cal_target);
+}
+
+static ssize_t in_illuminance0_target_input_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 tsl2772_chip *chip = iio_priv(indio_dev);
+ u16 value;
+ int ret;
+
+ if (kstrtou16(buf, 0, &value))
+ return -EINVAL;
+
+ chip->settings.als_cal_target = value;
+ ret = tsl2772_invoke_change(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ return len;
+}
+
+static ssize_t in_illuminance0_calibrate_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;
+ int ret;
+
+ if (kstrtobool(buf, &value) || !value)
+ return -EINVAL;
+
+ ret = tsl2772_als_calibrate(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ ret = tsl2772_invoke_change(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ return len;
+}
+
+static ssize_t in_illuminance0_lux_table_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct tsl2772_chip *chip = iio_priv(dev_to_iio_dev(dev));
+ int i = 0;
+ int offset = 0;
+
+ while (i < TSL2772_MAX_LUX_TABLE_SIZE) {
+ offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,",
+ chip->tsl2772_device_lux[i].ch0,
+ chip->tsl2772_device_lux[i].ch1);
+ if (chip->tsl2772_device_lux[i].ch0 == 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 in_illuminance0_lux_table_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 tsl2772_chip *chip = iio_priv(indio_dev);
+ int value[ARRAY_SIZE(chip->tsl2772_device_lux) * 2 + 1];
+ int n, ret;
+
+ 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 two ints to be one table entry,
+ * and the last table entry is all 0.
+ */
+ n = value[0];
+ if ((n % 2) || n < 4 ||
+ n > ((ARRAY_SIZE(chip->tsl2772_device_lux) - 1) * 2))
+ return -EINVAL;
+
+ if ((value[(n - 1)] | value[n]) != 0)
+ return -EINVAL;
+
+ if (chip->tsl2772_chip_status == TSL2772_CHIP_WORKING) {
+ ret = tsl2772_chip_off(indio_dev);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* Zero out the table */
+ memset(chip->tsl2772_device_lux, 0, sizeof(chip->tsl2772_device_lux));
+ memcpy(chip->tsl2772_device_lux, &value[1], (value[0] * 4));
+
+ ret = tsl2772_invoke_change(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ return len;
+}
+
+static ssize_t in_proximity0_calibrate_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;
+ int ret;
+
+ if (kstrtobool(buf, &value) || !value)
+ return -EINVAL;
+
+ ret = tsl2772_prox_cal(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ ret = tsl2772_invoke_change(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ return len;
+}
+
+static int tsl2772_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 tsl2772_chip *chip = iio_priv(indio_dev);
+
+ if (chan->type == IIO_INTENSITY)
+ return chip->settings.als_interrupt_en;
+ else
+ return chip->settings.prox_interrupt_en;
+}
+
+static int tsl2772_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 tsl2772_chip *chip = iio_priv(indio_dev);
+
+ if (chan->type == IIO_INTENSITY)
+ chip->settings.als_interrupt_en = val ? true : false;
+ else
+ chip->settings.prox_interrupt_en = val ? true : false;
+
+ return tsl2772_invoke_change(indio_dev);
+}
+
+static int tsl2772_write_event_value(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 tsl2772_chip *chip = iio_priv(indio_dev);
+ int ret = -EINVAL, count, persistence;
+ u8 time;
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ if (chan->type == IIO_INTENSITY) {
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ chip->settings.als_thresh_high = val;
+ ret = 0;
+ break;
+ case IIO_EV_DIR_FALLING:
+ chip->settings.als_thresh_low = val;
+ ret = 0;
+ break;
+ default:
+ break;
+ }
+ } else {
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ chip->settings.prox_thres_high = val;
+ ret = 0;
+ break;
+ case IIO_EV_DIR_FALLING:
+ chip->settings.prox_thres_low = val;
+ ret = 0;
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ case IIO_EV_INFO_PERIOD:
+ if (chan->type == IIO_INTENSITY)
+ time = chip->settings.als_time;
+ else
+ time = chip->settings.prox_time;
+
+ count = 256 - time;
+ persistence = ((val * 1000000) + val2) /
+ (count * tsl2772_int_time_avail[chip->id][3]);
+
+ if (chan->type == IIO_INTENSITY) {
+ /* ALS filter values are 1, 2, 3, 5, 10, 15, ..., 60 */
+ if (persistence > 3)
+ persistence = (persistence / 5) + 3;
+
+ chip->settings.als_persistence = persistence;
+ } else {
+ chip->settings.prox_persistence = persistence;
+ }
+
+ ret = 0;
+ break;
+ default:
+ break;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ return tsl2772_invoke_change(indio_dev);
+}
+
+static int tsl2772_read_event_value(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 tsl2772_chip *chip = iio_priv(indio_dev);
+ int filter_delay, persistence;
+ u8 time;
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ if (chan->type == IIO_INTENSITY) {
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ *val = chip->settings.als_thresh_high;
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ *val = chip->settings.als_thresh_low;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ } else {
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ *val = chip->settings.prox_thres_high;
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ *val = chip->settings.prox_thres_low;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ }
+ break;
+ case IIO_EV_INFO_PERIOD:
+ if (chan->type == IIO_INTENSITY) {
+ time = chip->settings.als_time;
+ persistence = chip->settings.als_persistence;
+
+ /* ALS filter values are 1, 2, 3, 5, 10, 15, ..., 60 */
+ if (persistence > 3)
+ persistence = (persistence - 3) * 5;
+ } else {
+ time = chip->settings.prox_time;
+ persistence = chip->settings.prox_persistence;
+ }
+
+ filter_delay = persistence * (256 - time) *
+ tsl2772_int_time_avail[chip->id][3];
+
+ *val = filter_delay / 1000000;
+ *val2 = filter_delay % 1000000;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int tsl2772_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long mask)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_PROCESSED:
+ switch (chan->type) {
+ case IIO_LIGHT:
+ tsl2772_get_lux(indio_dev);
+ *val = chip->als_cur_info.lux;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_RAW:
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ tsl2772_get_lux(indio_dev);
+ if (chan->channel == 0)
+ *val = chip->als_cur_info.als_ch0;
+ else
+ *val = chip->als_cur_info.als_ch1;
+ return IIO_VAL_INT;
+ case IIO_PROXIMITY:
+ tsl2772_get_prox(indio_dev);
+ *val = chip->prox_data;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ break;
+ case IIO_CHAN_INFO_CALIBSCALE:
+ if (chan->type == IIO_LIGHT)
+ *val = tsl2772_als_gain[chip->settings.als_gain];
+ else
+ *val = tsl2772_prox_gain[chip->settings.prox_gain];
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_CALIBBIAS:
+ *val = chip->settings.als_gain_trim;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_INT_TIME:
+ *val = 0;
+ *val2 = (256 - chip->settings.als_time) *
+ tsl2772_int_time_avail[chip->id][3];
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int tsl2772_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val,
+ int val2,
+ long mask)
+{
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBSCALE:
+ if (chan->type == IIO_INTENSITY) {
+ switch (val) {
+ case 1:
+ chip->settings.als_gain = 0;
+ break;
+ case 8:
+ chip->settings.als_gain = 1;
+ break;
+ case 16:
+ chip->settings.als_gain = 2;
+ break;
+ case 120:
+ chip->settings.als_gain = 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else {
+ switch (val) {
+ case 1:
+ chip->settings.prox_gain = 0;
+ break;
+ case 2:
+ chip->settings.prox_gain = 1;
+ break;
+ case 4:
+ chip->settings.prox_gain = 2;
+ break;
+ case 8:
+ chip->settings.prox_gain = 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ break;
+ case IIO_CHAN_INFO_CALIBBIAS:
+ if (val < TSL2772_ALS_GAIN_TRIM_MIN ||
+ val > TSL2772_ALS_GAIN_TRIM_MAX)
+ return -EINVAL;
+
+ chip->settings.als_gain_trim = val;
+ break;
+ case IIO_CHAN_INFO_INT_TIME:
+ if (val != 0 || val2 < tsl2772_int_time_avail[chip->id][1] ||
+ val2 > tsl2772_int_time_avail[chip->id][5])
+ return -EINVAL;
+
+ chip->settings.als_time = 256 -
+ (val2 / tsl2772_int_time_avail[chip->id][3]);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return tsl2772_invoke_change(indio_dev);
+}
+
+static DEVICE_ATTR_RW(in_illuminance0_target_input);
+
+static DEVICE_ATTR_WO(in_illuminance0_calibrate);
+
+static DEVICE_ATTR_WO(in_proximity0_calibrate);
+
+static DEVICE_ATTR_RW(in_illuminance0_lux_table);
+
+/* Use the default register values to identify the Taos device */
+static int tsl2772_device_id_verif(int 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 tsl2772_event_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct tsl2772_chip *chip = iio_priv(indio_dev);
+ s64 timestamp = iio_get_time_ns(indio_dev);
+ int ret;
+
+ ret = tsl2772_read_status(chip);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ /* What type of interrupt do we need to process */
+ if (ret & TSL2772_STA_PRX_INTR) {
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
+ 0,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ timestamp);
+ }
+
+ if (ret & TSL2772_STA_ALS_INTR) {
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
+ 0,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ timestamp);
+ }
+
+ ret = i2c_smbus_write_byte(chip->client,
+ TSL2772_CMD_REG | TSL2772_CMD_SPL_FN |
+ TSL2772_CMD_PROXALS_INT_CLR);
+ if (ret < 0)
+ dev_err(&chip->client->dev,
+ "%s: failed to clear interrupt status: %d\n",
+ __func__, ret);
+
+ return IRQ_HANDLED;
+}
+
+static struct attribute *tsl2772_ALS_device_attrs[] = {
+ &dev_attr_in_illuminance0_target_input.attr,
+ &dev_attr_in_illuminance0_calibrate.attr,
+ &dev_attr_in_illuminance0_lux_table.attr,
+ NULL
+};
+
+static struct attribute *tsl2772_PRX_device_attrs[] = {
+ &dev_attr_in_proximity0_calibrate.attr,
+ NULL
+};
+
+static struct attribute *tsl2772_ALSPRX_device_attrs[] = {
+ &dev_attr_in_illuminance0_target_input.attr,
+ &dev_attr_in_illuminance0_calibrate.attr,
+ &dev_attr_in_illuminance0_lux_table.attr,
+ NULL
+};
+
+static struct attribute *tsl2772_PRX2_device_attrs[] = {
+ &dev_attr_in_proximity0_calibrate.attr,
+ NULL
+};
+
+static struct attribute *tsl2772_ALSPRX2_device_attrs[] = {
+ &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 const struct attribute_group tsl2772_device_attr_group_tbl[] = {
+ [ALS] = {
+ .attrs = tsl2772_ALS_device_attrs,
+ },
+ [PRX] = {
+ .attrs = tsl2772_PRX_device_attrs,
+ },
+ [ALSPRX] = {
+ .attrs = tsl2772_ALSPRX_device_attrs,
+ },
+ [PRX2] = {
+ .attrs = tsl2772_PRX2_device_attrs,
+ },
+ [ALSPRX2] = {
+ .attrs = tsl2772_ALSPRX2_device_attrs,
+ },
+};
+
+#define TSL2772_DEVICE_INFO(type)[type] = \
+ { \
+ .attrs = &tsl2772_device_attr_group_tbl[type], \
+ .read_raw = &tsl2772_read_raw, \
+ .read_avail = &tsl2772_read_avail, \
+ .write_raw = &tsl2772_write_raw, \
+ .read_event_value = &tsl2772_read_event_value, \
+ .write_event_value = &tsl2772_write_event_value, \
+ .read_event_config = &tsl2772_read_interrupt_config, \
+ .write_event_config = &tsl2772_write_interrupt_config, \
+ }
+
+static const struct iio_info tsl2772_device_info[] = {
+ TSL2772_DEVICE_INFO(ALS),
+ TSL2772_DEVICE_INFO(PRX),
+ TSL2772_DEVICE_INFO(ALSPRX),
+ TSL2772_DEVICE_INFO(PRX2),
+ TSL2772_DEVICE_INFO(ALSPRX2),
+};
+
+static const struct iio_event_spec tsl2772_events[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_PERIOD) |
+ BIT(IIO_EV_INFO_ENABLE),
+ },
+};
+
+static const struct tsl2772_chip_info tsl2772_chip_info_tbl[] = {
+ [ALS] = {
+ .channel_with_events = {
+ {
+ .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_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .event_spec = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_events),
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 1,
+ },
+ },
+ .channel_without_events = {
+ {
+ .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_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 1,
+ },
+ },
+ .chan_table_elements = 3,
+ .info = &tsl2772_device_info[ALS],
+ },
+ [PRX] = {
+ .channel_with_events = {
+ {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .event_spec = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_events),
+ },
+ },
+ .channel_without_events = {
+ {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ },
+ },
+ .chan_table_elements = 1,
+ .info = &tsl2772_device_info[PRX],
+ },
+ [ALSPRX] = {
+ .channel_with_events = {
+ {
+ .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_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .event_spec = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_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 = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_events),
+ },
+ },
+ .channel_without_events = {
+ {
+ .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_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ }, {
+ .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),
+ },
+ },
+ .chan_table_elements = 4,
+ .info = &tsl2772_device_info[ALSPRX],
+ },
+ [PRX2] = {
+ .channel_with_events = {
+ {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .event_spec = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_events),
+ },
+ },
+ .channel_without_events = {
+ {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ },
+ },
+ .chan_table_elements = 1,
+ .info = &tsl2772_device_info[PRX2],
+ },
+ [ALSPRX2] = {
+ .channel_with_events = {
+ {
+ .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_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .event_spec = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_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),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .event_spec = tsl2772_events,
+ .num_event_specs = ARRAY_SIZE(tsl2772_events),
+ },
+ },
+ .channel_without_events = {
+ {
+ .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_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ }, {
+ .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),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
+ },
+ },
+ .chan_table_elements = 4,
+ .info = &tsl2772_device_info[ALSPRX2],
+ },
+};
+
+static int tsl2772_probe(struct i2c_client *clientp,
+ const struct i2c_device_id *id)
+{
+ struct iio_dev *indio_dev;
+ struct tsl2772_chip *chip;
+ int ret;
+
+ 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 = i2c_smbus_read_byte_data(chip->client,
+ TSL2772_CMD_REG | TSL2772_CHIPID);
+ if (ret < 0)
+ return ret;
+
+ if (tsl2772_device_id_verif(ret, id->driver_data) <= 0) {
+ dev_info(&chip->client->dev,
+ "%s: i2c device found does not match expected id\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ ret = i2c_smbus_write_byte(clientp, TSL2772_CMD_REG | TSL2772_CNTRL);
+ if (ret < 0) {
+ dev_err(&clientp->dev,
+ "%s: Failed to write to CMD register: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ mutex_init(&chip->als_mutex);
+ mutex_init(&chip->prox_mutex);
+
+ chip->tsl2772_chip_status = TSL2772_CHIP_UNKNOWN;
+ chip->pdata = dev_get_platdata(&clientp->dev);
+ chip->id = id->driver_data;
+ chip->chip_info =
+ &tsl2772_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->num_channels = chip->chip_info->chan_table_elements;
+
+ if (clientp->irq) {
+ indio_dev->channels = chip->chip_info->channel_with_events;
+
+ ret = devm_request_threaded_irq(&clientp->dev, clientp->irq,
+ NULL,
+ &tsl2772_event_handler,
+ IRQF_TRIGGER_FALLING |
+ IRQF_ONESHOT,
+ "TSL2772_event",
+ indio_dev);
+ if (ret) {
+ dev_err(&clientp->dev,
+ "%s: irq request failed\n", __func__);
+ return ret;
+ }
+ } else {
+ indio_dev->channels = chip->chip_info->channel_without_events;
+ }
+
+ tsl2772_defaults(chip);
+ ret = tsl2772_chip_on(indio_dev);
+ if (ret < 0)
+ return ret;
+
+ ret = iio_device_register(indio_dev);
+ if (ret) {
+ tsl2772_chip_off(indio_dev);
+ dev_err(&clientp->dev,
+ "%s: iio registration failed\n", __func__);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tsl2772_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+ return tsl2772_chip_off(indio_dev);
+}
+
+static int tsl2772_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+ return tsl2772_chip_on(indio_dev);
+}
+
+static int tsl2772_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+
+ tsl2772_chip_off(indio_dev);
+
+ iio_device_unregister(indio_dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id tsl2772_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, tsl2772_idtable);
+
+static const struct of_device_id tsl2772_of_match[] = {
+ { .compatible = "amstaos,tsl2571" },
+ { .compatible = "amstaos,tsl2671" },
+ { .compatible = "amstaos,tmd2671" },
+ { .compatible = "amstaos,tsl2771" },
+ { .compatible = "amstaos,tmd2771" },
+ { .compatible = "amstaos,tsl2572" },
+ { .compatible = "amstaos,tsl2672" },
+ { .compatible = "amstaos,tmd2672" },
+ { .compatible = "amstaos,tsl2772" },
+ { .compatible = "amstaos,tmd2772" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, tsl2772_of_match);
+
+static const struct dev_pm_ops tsl2772_pm_ops = {
+ .suspend = tsl2772_suspend,
+ .resume = tsl2772_resume,
+};
+
+static struct i2c_driver tsl2772_driver = {
+ .driver = {
+ .name = "tsl2772",
+ .of_match_table = tsl2772_of_match,
+ .pm = &tsl2772_pm_ops,
+ },
+ .id_table = tsl2772_idtable,
+ .probe = tsl2772_probe,
+ .remove = tsl2772_remove,
+};
+
+module_i2c_driver(tsl2772_driver);
+
+MODULE_AUTHOR("J. August Brenner <Jon.Brenner@ams.com>");
+MODULE_AUTHOR("Brian Masney <masneyb@onstation.org>");
+MODULE_DESCRIPTION("TAOS tsl2772 ambient and proximity light sensor driver");
+MODULE_LICENSE("GPL");