From: Brian Masney Date: Fri, 11 May 2018 00:12:23 +0000 (-0400) Subject: staging: iio: tsl2x7x/tsl2772: move out of staging X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c06c4d793584b965bf5fa3fb107f6279643574e2;p=linux.git staging: iio: tsl2x7x/tsl2772: move out of staging Move the tsl2772 driver out of staging and into mainline. Signed-off-by: Brian Masney Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 074e50657366b..c7ef8d1862d6b 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -409,6 +409,14 @@ config TSL2583 Provides support for the TAOS tsl2580, tsl2581 and tsl2583 devices. Access ALS data via iio, sysfs. +config TSL2772 + tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors" + depends on I2C + help + Support for: tsl2571, tsl2671, tmd2671, tsl2771, tmd2771, tsl2572, tsl2672, + tmd2672, tsl2772, tmd2772 devices. + Provides iio_events and direct access via sysfs. + config TSL4531 tristate "TAOS TSL4531 ambient light sensors" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index f1777036d4f89..80943af5d627d 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -40,6 +40,7 @@ obj-$(CONFIG_ST_UVIS25_SPI) += st_uvis25_spi.o obj-$(CONFIG_TCS3414) += tcs3414.o obj-$(CONFIG_TCS3472) += tcs3472.o obj-$(CONFIG_TSL2583) += tsl2583.o +obj-$(CONFIG_TSL2772) += tsl2772.o obj-$(CONFIG_TSL4531) += tsl4531.o obj-$(CONFIG_US5182D) += us5182d.o obj-$(CONFIG_VCNL4000) += vcnl4000.o diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c new file mode 100644 index 0000000000000..34d42a2504c92 --- /dev/null +++ b/drivers/iio/light/tsl2772.c @@ -0,0 +1,1800 @@ +// 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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* 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; + } + + 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 "); +MODULE_AUTHOR("Brian Masney "); +MODULE_DESCRIPTION("TAOS tsl2772 ambient and proximity light sensor driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig index bd9445956511e..aee2335a25a12 100644 --- a/drivers/staging/iio/Kconfig +++ b/drivers/staging/iio/Kconfig @@ -11,7 +11,6 @@ source "drivers/staging/iio/cdc/Kconfig" source "drivers/staging/iio/frequency/Kconfig" source "drivers/staging/iio/gyro/Kconfig" source "drivers/staging/iio/impedance-analyzer/Kconfig" -source "drivers/staging/iio/light/Kconfig" source "drivers/staging/iio/meter/Kconfig" source "drivers/staging/iio/resolver/Kconfig" diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile index e99a375c07b97..c28d657497de8 100644 --- a/drivers/staging/iio/Makefile +++ b/drivers/staging/iio/Makefile @@ -10,6 +10,5 @@ obj-y += cdc/ obj-y += frequency/ obj-y += gyro/ obj-y += impedance-analyzer/ -obj-y += light/ obj-y += meter/ obj-y += resolver/ diff --git a/drivers/staging/iio/light/Kconfig b/drivers/staging/iio/light/Kconfig deleted file mode 100644 index dfa37386ad2c3..0000000000000 --- a/drivers/staging/iio/light/Kconfig +++ /dev/null @@ -1,14 +0,0 @@ -# -# Light sensors -# -menu "Light sensors" - -config TSL2772 - tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors" - depends on I2C - help - Support for: tsl2571, tsl2671, tmd2671, tsl2771, tmd2771, tsl2572, tsl2672, - tmd2672, tsl2772, tmd2772 devices. - Provides iio_events and direct access via sysfs. - -endmenu diff --git a/drivers/staging/iio/light/Makefile b/drivers/staging/iio/light/Makefile deleted file mode 100644 index e7e77a11f02a1..0000000000000 --- a/drivers/staging/iio/light/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# -# Makefile for industrial I/O Light sensors -# - -obj-$(CONFIG_TSL2772) += tsl2772.o diff --git a/drivers/staging/iio/light/tsl2772.c b/drivers/staging/iio/light/tsl2772.c deleted file mode 100644 index a59bf39c28d42..0000000000000 --- a/drivers/staging/iio/light/tsl2772.c +++ /dev/null @@ -1,1800 +0,0 @@ -// 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 - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "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; - } - - 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 "); -MODULE_AUTHOR("Brian Masney "); -MODULE_DESCRIPTION("TAOS tsl2772 ambient and proximity light sensor driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/iio/light/tsl2772.h b/drivers/staging/iio/light/tsl2772.h deleted file mode 100644 index f8ade15a35e27..0000000000000 --- a/drivers/staging/iio/light/tsl2772.h +++ /dev/null @@ -1,101 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Device driver for monitoring ambient light intensity (lux) - * and proximity (prox) within the TAOS TSL2772 family of devices. - * - * Copyright (c) 2012, TAOS Corporation. - * Copyright (c) 2017-2018 Brian Masney - */ - -#ifndef __TSL2772_H -#define __TSL2772_H - -struct tsl2772_lux { - unsigned int ch0; - unsigned int ch1; -}; - -/* Max number of segments allowable in LUX table */ -#define TSL2772_MAX_LUX_TABLE_SIZE 6 -/* The default LUX tables all have 3 elements. */ -#define TSL2772_DEF_LUX_TABLE_SZ 3 -#define TSL2772_DEFAULT_TABLE_BYTES (sizeof(struct tsl2772_lux) * \ - TSL2772_DEF_LUX_TABLE_SZ) - -/* Proximity diode to use */ -#define TSL2772_DIODE0 0x01 -#define TSL2772_DIODE1 0x02 -#define TSL2772_DIODE_BOTH 0x03 - -/* LED Power */ -#define TSL2772_100_mA 0x00 -#define TSL2772_50_mA 0x01 -#define TSL2772_25_mA 0x02 -#define TSL2772_13_mA 0x03 - -/** - * struct tsl2772_settings - Settings for the tsl2772 driver - * @als_time: Integration time of the ALS channel ADCs in 2.73 ms - * increments. Total integration time is - * (256 - als_time) * 2.73. - * @als_gain: Index into the tsl2772_als_gain array. - * @als_gain_trim: Default gain trim to account for aperture effects. - * @wait_time: Time between proximity and ALS cycles in 2.73 - * periods. - * @prox_time: Integration time of the proximity ADC in 2.73 ms - * increments. Total integration time is - * (256 - prx_time) * 2.73. - * @prox_gain: Index into the tsl2772_prx_gain array. - * @als_prox_config: The value of the ALS / Proximity configuration - * register. - * @als_cal_target: Known external ALS reading for calibration. - * @als_persistence: H/W Filters, Number of 'out of limits' ALS readings. - * @als_interrupt_en: Enable/Disable ALS interrupts - * @als_thresh_low: CH0 'low' count to trigger interrupt. - * @als_thresh_high: CH0 'high' count to trigger interrupt. - * @prox_persistence: H/W Filters, Number of 'out of limits' proximity - * readings. - * @prox_interrupt_en: Enable/Disable proximity interrupts. - * @prox_thres_low: Low threshold proximity detection. - * @prox_thres_high: High threshold proximity detection. - * @prox_pulse_count: Number if proximity emitter pulses. - * @prox_max_samples_cal: The number of samples that are taken when performing - * a proximity calibration. - * @prox_diode Which diode(s) to use for driving the external - * LED(s) for proximity sensing. - * @prox_power The amount of power to use for the external LED(s). - */ -struct tsl2772_settings { - int als_time; - int als_gain; - int als_gain_trim; - int wait_time; - int prox_time; - int prox_gain; - int als_prox_config; - int als_cal_target; - u8 als_persistence; - bool als_interrupt_en; - int als_thresh_low; - int als_thresh_high; - u8 prox_persistence; - bool prox_interrupt_en; - int prox_thres_low; - int prox_thres_high; - int prox_pulse_count; - int prox_max_samples_cal; - int prox_diode; - int prox_power; -}; - -/** - * struct tsl2772_platform_data - Platform callback, glass and defaults - * @platform_lux_table: Device specific glass coefficents - * @platform_default_settings: Device specific power on defaults - */ -struct tsl2772_platform_data { - struct tsl2772_lux platform_lux_table[TSL2772_MAX_LUX_TABLE_SIZE]; - struct tsl2772_settings *platform_default_settings; -}; - -#endif /* __TSL2772_H */ diff --git a/include/linux/platform_data/tsl2772.h b/include/linux/platform_data/tsl2772.h new file mode 100644 index 0000000000000..f8ade15a35e27 --- /dev/null +++ b/include/linux/platform_data/tsl2772.h @@ -0,0 +1,101 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Device driver for monitoring ambient light intensity (lux) + * and proximity (prox) within the TAOS TSL2772 family of devices. + * + * Copyright (c) 2012, TAOS Corporation. + * Copyright (c) 2017-2018 Brian Masney + */ + +#ifndef __TSL2772_H +#define __TSL2772_H + +struct tsl2772_lux { + unsigned int ch0; + unsigned int ch1; +}; + +/* Max number of segments allowable in LUX table */ +#define TSL2772_MAX_LUX_TABLE_SIZE 6 +/* The default LUX tables all have 3 elements. */ +#define TSL2772_DEF_LUX_TABLE_SZ 3 +#define TSL2772_DEFAULT_TABLE_BYTES (sizeof(struct tsl2772_lux) * \ + TSL2772_DEF_LUX_TABLE_SZ) + +/* Proximity diode to use */ +#define TSL2772_DIODE0 0x01 +#define TSL2772_DIODE1 0x02 +#define TSL2772_DIODE_BOTH 0x03 + +/* LED Power */ +#define TSL2772_100_mA 0x00 +#define TSL2772_50_mA 0x01 +#define TSL2772_25_mA 0x02 +#define TSL2772_13_mA 0x03 + +/** + * struct tsl2772_settings - Settings for the tsl2772 driver + * @als_time: Integration time of the ALS channel ADCs in 2.73 ms + * increments. Total integration time is + * (256 - als_time) * 2.73. + * @als_gain: Index into the tsl2772_als_gain array. + * @als_gain_trim: Default gain trim to account for aperture effects. + * @wait_time: Time between proximity and ALS cycles in 2.73 + * periods. + * @prox_time: Integration time of the proximity ADC in 2.73 ms + * increments. Total integration time is + * (256 - prx_time) * 2.73. + * @prox_gain: Index into the tsl2772_prx_gain array. + * @als_prox_config: The value of the ALS / Proximity configuration + * register. + * @als_cal_target: Known external ALS reading for calibration. + * @als_persistence: H/W Filters, Number of 'out of limits' ALS readings. + * @als_interrupt_en: Enable/Disable ALS interrupts + * @als_thresh_low: CH0 'low' count to trigger interrupt. + * @als_thresh_high: CH0 'high' count to trigger interrupt. + * @prox_persistence: H/W Filters, Number of 'out of limits' proximity + * readings. + * @prox_interrupt_en: Enable/Disable proximity interrupts. + * @prox_thres_low: Low threshold proximity detection. + * @prox_thres_high: High threshold proximity detection. + * @prox_pulse_count: Number if proximity emitter pulses. + * @prox_max_samples_cal: The number of samples that are taken when performing + * a proximity calibration. + * @prox_diode Which diode(s) to use for driving the external + * LED(s) for proximity sensing. + * @prox_power The amount of power to use for the external LED(s). + */ +struct tsl2772_settings { + int als_time; + int als_gain; + int als_gain_trim; + int wait_time; + int prox_time; + int prox_gain; + int als_prox_config; + int als_cal_target; + u8 als_persistence; + bool als_interrupt_en; + int als_thresh_low; + int als_thresh_high; + u8 prox_persistence; + bool prox_interrupt_en; + int prox_thres_low; + int prox_thres_high; + int prox_pulse_count; + int prox_max_samples_cal; + int prox_diode; + int prox_power; +}; + +/** + * struct tsl2772_platform_data - Platform callback, glass and defaults + * @platform_lux_table: Device specific glass coefficents + * @platform_default_settings: Device specific power on defaults + */ +struct tsl2772_platform_data { + struct tsl2772_lux platform_lux_table[TSL2772_MAX_LUX_TABLE_SIZE]; + struct tsl2772_settings *platform_default_settings; +}; + +#endif /* __TSL2772_H */