From: Brian Masney Date: Fri, 5 May 2017 00:38:22 +0000 (-0400) Subject: staging: iio: tsl2x7x: rename driver for consistency with other IIO light drivers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=38a67ffd44fc013437f83e96612c5210499ba02a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git staging: iio: tsl2x7x: rename driver for consistency with other IIO light drivers This patch renames the tsl2x7x_core.c file to tsl2x7x.c so that the naming convention is consistent with other IIO light drivers outside of staging. Signed-off-by: Brian Masney Signed-off-by: Jonathan Cameron --- diff --git a/drivers/staging/iio/light/Makefile b/drivers/staging/iio/light/Makefile index 10286c3ee6fe..ab8dc3a3d10b 100644 --- a/drivers/staging/iio/light/Makefile +++ b/drivers/staging/iio/light/Makefile @@ -2,4 +2,4 @@ # Makefile for industrial I/O Light sensors # -obj-$(CONFIG_TSL2x7x) += tsl2x7x_core.o +obj-$(CONFIG_TSL2x7x) += tsl2x7x.o diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c new file mode 100644 index 000000000000..8121a5188638 --- /dev/null +++ b/drivers/staging/iio/light/tsl2x7x.c @@ -0,0 +1,2063 @@ +/* + * Device driver for monitoring ambient light intensity in (lux) + * and proximity detection (prox) within the TAOS TSL2X7X family of devices. + * + * Copyright (c) 2012, TAOS Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "tsl2x7x.h" + +/* Cal defs*/ +#define PROX_STAT_CAL 0 +#define PROX_STAT_SAMP 1 +#define MAX_SAMPLES_CAL 200 + +/* TSL2X7X Device ID */ +#define TRITON_ID 0x00 +#define SWORDFISH_ID 0x30 +#define HALIBUT_ID 0x20 + +/* Lux calculation constants */ +#define TSL2X7X_LUX_CALC_OVER_FLOW 65535 + +/* TAOS Register definitions - note: + * depending on device, some of these register are not used and the + * register address is benign. + */ +/* 2X7X register offsets */ +#define TSL2X7X_MAX_CONFIG_REG 16 + +/* Device Registers and Masks */ +#define TSL2X7X_CNTRL 0x00 +#define TSL2X7X_ALS_TIME 0X01 +#define TSL2X7X_PRX_TIME 0x02 +#define TSL2X7X_WAIT_TIME 0x03 +#define TSL2X7X_ALS_MINTHRESHLO 0X04 +#define TSL2X7X_ALS_MINTHRESHHI 0X05 +#define TSL2X7X_ALS_MAXTHRESHLO 0X06 +#define TSL2X7X_ALS_MAXTHRESHHI 0X07 +#define TSL2X7X_PRX_MINTHRESHLO 0X08 +#define TSL2X7X_PRX_MINTHRESHHI 0X09 +#define TSL2X7X_PRX_MAXTHRESHLO 0X0A +#define TSL2X7X_PRX_MAXTHRESHHI 0X0B +#define TSL2X7X_PERSISTENCE 0x0C +#define TSL2X7X_PRX_CONFIG 0x0D +#define TSL2X7X_PRX_COUNT 0x0E +#define TSL2X7X_GAIN 0x0F +#define TSL2X7X_NOTUSED 0x10 +#define TSL2X7X_REVID 0x11 +#define TSL2X7X_CHIPID 0x12 +#define TSL2X7X_STATUS 0x13 +#define TSL2X7X_ALS_CHAN0LO 0x14 +#define TSL2X7X_ALS_CHAN0HI 0x15 +#define TSL2X7X_ALS_CHAN1LO 0x16 +#define TSL2X7X_ALS_CHAN1HI 0x17 +#define TSL2X7X_PRX_LO 0x18 +#define TSL2X7X_PRX_HI 0x19 + +/* tsl2X7X cmd reg masks */ +#define TSL2X7X_CMD_REG 0x80 +#define TSL2X7X_CMD_SPL_FN 0x60 + +#define TSL2X7X_CMD_PROX_INT_CLR 0X05 +#define TSL2X7X_CMD_ALS_INT_CLR 0x06 +#define TSL2X7X_CMD_PROXALS_INT_CLR 0X07 + +/* tsl2X7X cntrl reg masks */ +#define TSL2X7X_CNTL_ADC_ENBL 0x02 +#define TSL2X7X_CNTL_PWR_ON 0x01 + +/* tsl2X7X status reg masks */ +#define TSL2X7X_STA_ADC_VALID 0x01 +#define TSL2X7X_STA_PRX_VALID 0x02 +#define TSL2X7X_STA_ADC_PRX_VALID (TSL2X7X_STA_ADC_VALID |\ + TSL2X7X_STA_PRX_VALID) +#define TSL2X7X_STA_ALS_INTR 0x10 +#define TSL2X7X_STA_PRX_INTR 0x20 + +/* tsl2X7X cntrl reg masks */ +#define TSL2X7X_CNTL_REG_CLEAR 0x00 +#define TSL2X7X_CNTL_PROX_INT_ENBL 0X20 +#define TSL2X7X_CNTL_ALS_INT_ENBL 0X10 +#define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08 +#define TSL2X7X_CNTL_PROX_DET_ENBL 0X04 +#define TSL2X7X_CNTL_PWRON 0x01 +#define TSL2X7X_CNTL_ALSPON_ENBL 0x03 +#define TSL2X7X_CNTL_INTALSPON_ENBL 0x13 +#define TSL2X7X_CNTL_PROXPON_ENBL 0x0F +#define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F + +/*Prox diode to use */ +#define TSL2X7X_DIODE0 0x10 +#define TSL2X7X_DIODE1 0x20 +#define TSL2X7X_DIODE_BOTH 0x30 + +/* LED Power */ +#define TSL2X7X_mA100 0x00 +#define TSL2X7X_mA50 0x40 +#define TSL2X7X_mA25 0x80 +#define TSL2X7X_mA13 0xD0 +#define TSL2X7X_MAX_TIMER_CNT (0xFF) + +#define TSL2X7X_MIN_ITIME 3 + +/* TAOS txx2x7x Device family members */ +enum { + tsl2571, + tsl2671, + tmd2671, + tsl2771, + tmd2771, + tsl2572, + tsl2672, + tmd2672, + tsl2772, + tmd2772 +}; + +enum { + TSL2X7X_CHIP_UNKNOWN = 0, + TSL2X7X_CHIP_WORKING = 1, + TSL2X7X_CHIP_SUSPENDED = 2 +}; + +struct tsl2x7x_parse_result { + int integer; + int fract; +}; + +/* Per-device data */ +struct tsl2x7x_als_info { + u16 als_ch0; + u16 als_ch1; + u16 lux; +}; + +struct tsl2x7x_prox_stat { + int min; + int max; + int mean; + unsigned long stddev; +}; + +struct tsl2x7x_chip_info { + int chan_table_elements; + struct iio_chan_spec channel[4]; + const struct iio_info *info; +}; + +struct tsl2X7X_chip { + kernel_ulong_t id; + struct mutex prox_mutex; + struct mutex als_mutex; + struct i2c_client *client; + u16 prox_data; + struct tsl2x7x_als_info als_cur_info; + struct tsl2x7x_settings tsl2x7x_settings; + struct tsl2X7X_platform_data *pdata; + int als_time_scale; + int als_saturation; + int tsl2x7x_chip_status; + u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG]; + const struct tsl2x7x_chip_info *chip_info; + const struct iio_info *info; + s64 event_timestamp; + /* + * This structure is intentionally large to accommodate + * updates via sysfs. + * Sized to 9 = max 8 segments + 1 termination segment + */ + struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE]; +}; + +/* Different devices require different coefficents */ +static const struct tsl2x7x_lux tsl2x71_lux_table[] = { + { 14461, 611, 1211 }, + { 18540, 352, 623 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux tmd2x71_lux_table[] = { + { 11635, 115, 256 }, + { 15536, 87, 179 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux tsl2x72_lux_table[] = { + { 14013, 466, 917 }, + { 18222, 310, 552 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux tmd2x72_lux_table[] = { + { 13218, 130, 262 }, + { 17592, 92, 169 }, + { 0, 0, 0 }, +}; + +static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = { + [tsl2571] = tsl2x71_lux_table, + [tsl2671] = tsl2x71_lux_table, + [tmd2671] = tmd2x71_lux_table, + [tsl2771] = tsl2x71_lux_table, + [tmd2771] = tmd2x71_lux_table, + [tsl2572] = tsl2x72_lux_table, + [tsl2672] = tsl2x72_lux_table, + [tmd2672] = tmd2x72_lux_table, + [tsl2772] = tsl2x72_lux_table, + [tmd2772] = tmd2x72_lux_table, +}; + +static const struct tsl2x7x_settings tsl2x7x_default_settings = { + .als_time = 219, /* 101 ms */ + .als_gain = 0, + .prx_time = 254, /* 5.4 ms */ + .prox_gain = 1, + .wait_time = 245, + .prox_config = 0, + .als_gain_trim = 1000, + .als_cal_target = 150, + .als_thresh_low = 200, + .als_thresh_high = 256, + .persistence = 255, + .interrupts_en = 0, + .prox_thres_low = 0, + .prox_thres_high = 512, + .prox_max_samples_cal = 30, + .prox_pulse_count = 8 +}; + +static const s16 tsl2X7X_als_gainadj[] = { + 1, + 8, + 16, + 120 +}; + +static const s16 tsl2X7X_prx_gainadj[] = { + 1, + 2, + 4, + 8 +}; + +/* Channel variations */ +enum { + ALS, + PRX, + ALSPRX, + PRX2, + ALSPRX2, +}; + +static const u8 device_channel_config[] = { + ALS, + PRX, + PRX, + ALSPRX, + ALSPRX, + ALS, + PRX2, + PRX2, + ALSPRX2, + ALSPRX2 +}; + +/** + * tsl2x7x_i2c_read() - Read a byte from a register. + * @client: i2c client + * @reg: device register to read from + * @*val: pointer to location to store register contents. + * + */ +static int +tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val) +{ + int ret; + + /* select register to write */ + ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg)); + if (ret < 0) { + dev_err(&client->dev, "failed to write register %x\n", reg); + return ret; + } + + /* read the data */ + ret = i2c_smbus_read_byte(client); + if (ret >= 0) + *val = (u8)ret; + else + dev_err(&client->dev, "failed to read register %x\n", reg); + + return ret; +} + +/** + * tsl2x7x_get_lux() - Reads and calculates current lux value. + * @indio_dev: pointer to IIO device + * + * The raw ch0 and ch1 values of the ambient light sensed in the last + * integration cycle are read from the device. + * Time scale factor array values are adjusted based on the integration time. + * The raw values are multiplied by a scale factor, and device gain is obtained + * using gain index. Limit checks are done next, then the ratio of a multiple + * of ch1 value, to the ch0 value, is calculated. Array tsl2x7x_device_lux[] + * is then scanned to find the first ratio value that is just above the ratio + * we just calculated. The ch0 and ch1 multiplier constants in the array are + * then used along with the time scale factor array values, to calculate the + * lux. + */ +static int tsl2x7x_get_lux(struct iio_dev *indio_dev) +{ + u16 ch0, ch1; /* separated ch0/ch1 data from device */ + u32 lux; /* raw lux calculated from device data */ + u64 lux64; + u32 ratio; + u8 buf[4]; + struct tsl2x7x_lux *p; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int i, ret; + u32 ch0lux = 0; + u32 ch1lux = 0; + + if (mutex_trylock(&chip->als_mutex) == 0) + return chip->als_cur_info.lux; /* busy, so return LAST VALUE */ + + if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) { + /* device is not enabled */ + dev_err(&chip->client->dev, "%s: device is not enabled\n", + __func__); + ret = -EBUSY; + goto out_unlock; + } + + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: Failed to read STATUS Reg\n", __func__); + goto out_unlock; + } + /* is data new & valid */ + if (!(buf[0] & TSL2X7X_STA_ADC_VALID)) { + dev_err(&chip->client->dev, + "%s: data not valid yet\n", __func__); + ret = chip->als_cur_info.lux; /* return LAST VALUE */ + goto out_unlock; + } + + for (i = 0; i < 4; i++) { + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | + (TSL2X7X_ALS_CHAN0LO + i)), &buf[i]); + if (ret < 0) { + dev_err(&chip->client->dev, + "failed to read. err=%x\n", ret); + goto out_unlock; + } + } + + /* clear any existing interrupt status */ + ret = i2c_smbus_write_byte(chip->client, + (TSL2X7X_CMD_REG | + TSL2X7X_CMD_SPL_FN | + TSL2X7X_CMD_ALS_INT_CLR)); + if (ret < 0) { + dev_err(&chip->client->dev, + "i2c_write_command failed - err = %d\n", ret); + goto out_unlock; /* have no data, so return failure */ + } + + /* extract ALS/lux data */ + ch0 = le16_to_cpup((const __le16 *)&buf[0]); + ch1 = le16_to_cpup((const __le16 *)&buf[2]); + + chip->als_cur_info.als_ch0 = ch0; + chip->als_cur_info.als_ch1 = ch1; + + if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) { + lux = TSL2X7X_LUX_CALC_OVER_FLOW; + goto return_max; + } + + if (!ch0) { + /* have no data, so return LAST VALUE */ + ret = chip->als_cur_info.lux; + goto out_unlock; + } + /* calculate ratio */ + ratio = (ch1 << 15) / ch0; + /* convert to unscaled lux using the pointer to the table */ + p = (struct tsl2x7x_lux *)chip->tsl2x7x_device_lux; + while (p->ratio != 0 && p->ratio < ratio) + p++; + + if (p->ratio == 0) { + lux = 0; + } else { + ch0lux = DIV_ROUND_UP(ch0 * p->ch0, + tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); + ch1lux = DIV_ROUND_UP(ch1 * p->ch1, + tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); + lux = ch0lux - ch1lux; + } + + /* note: lux is 31 bit max at this point */ + if (ch1lux > ch0lux) { + dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n"); + ret = chip->als_cur_info.lux; + goto out_unlock; + } + + /* adjust for active time scale */ + if (chip->als_time_scale == 0) + lux = 0; + else + lux = (lux + (chip->als_time_scale >> 1)) / + chip->als_time_scale; + + /* adjust for active gain scale + * The tsl2x7x_device_lux tables have a factor of 256 built-in. + * User-specified gain provides a multiplier. + * Apply user-specified gain before shifting right to retain precision. + * Use 64 bits to avoid overflow on multiplication. + * Then go back to 32 bits before division to avoid using div_u64(). + */ + + lux64 = lux; + lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim; + lux64 >>= 8; + lux = lux64; + lux = (lux + 500) / 1000; + + if (lux > TSL2X7X_LUX_CALC_OVER_FLOW) /* check for overflow */ + lux = TSL2X7X_LUX_CALC_OVER_FLOW; + + /* Update the structure with the latest lux. */ +return_max: + chip->als_cur_info.lux = lux; + ret = lux; + +out_unlock: + mutex_unlock(&chip->als_mutex); + + return ret; +} + +/** + * tsl2x7x_get_prox() - Reads proximity data registers and updates + * chip->prox_data. + * + * @indio_dev: pointer to IIO device + */ +static int tsl2x7x_get_prox(struct iio_dev *indio_dev) +{ + int i; + int ret; + u8 status; + u8 chdata[2]; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (mutex_trylock(&chip->prox_mutex) == 0) { + dev_err(&chip->client->dev, + "%s: Can't get prox mutex\n", __func__); + return -EBUSY; + } + + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status); + if (ret < 0) { + dev_err(&chip->client->dev, "i2c err=%d\n", ret); + goto prox_poll_err; + } + + switch (chip->id) { + case tsl2571: + case tsl2671: + case tmd2671: + case tsl2771: + case tmd2771: + if (!(status & TSL2X7X_STA_ADC_VALID)) + goto prox_poll_err; + break; + case tsl2572: + case tsl2672: + case tmd2672: + case tsl2772: + case tmd2772: + if (!(status & TSL2X7X_STA_PRX_VALID)) + goto prox_poll_err; + break; + } + + for (i = 0; i < 2; i++) { + ret = tsl2x7x_i2c_read(chip->client, + (TSL2X7X_CMD_REG | + (TSL2X7X_PRX_LO + i)), &chdata[i]); + if (ret < 0) + goto prox_poll_err; + } + + chip->prox_data = + le16_to_cpup((const __le16 *)&chdata[0]); + +prox_poll_err: + + mutex_unlock(&chip->prox_mutex); + + return chip->prox_data; +} + +/** + * tsl2x7x_defaults() - Populates the device nominal operating parameters + * with those provided by a 'platform' data struct or + * with prefined defaults. + * + * @chip: pointer to device structure. + */ +static void tsl2x7x_defaults(struct tsl2X7X_chip *chip) +{ + /* If Operational settings defined elsewhere.. */ + if (chip->pdata && chip->pdata->platform_default_settings) + memcpy(&chip->tsl2x7x_settings, + chip->pdata->platform_default_settings, + sizeof(tsl2x7x_default_settings)); + else + memcpy(&chip->tsl2x7x_settings, + &tsl2x7x_default_settings, + sizeof(tsl2x7x_default_settings)); + + /* Load up the proper lux table. */ + if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0) + memcpy(chip->tsl2x7x_device_lux, + chip->pdata->platform_lux_table, + sizeof(chip->pdata->platform_lux_table)); + else + memcpy(chip->tsl2x7x_device_lux, + (struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id], + MAX_DEFAULT_TABLE_BYTES); +} + +/** + * tsl2x7x_als_calibrate() - Obtain single reading and calculate + * the als_gain_trim. + * + * @indio_dev: pointer to IIO device + */ +static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + u8 reg_val; + int gain_trim_val; + int ret; + int lux_val; + + ret = i2c_smbus_write_byte(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); + if (ret < 0) { + dev_err(&chip->client->dev, + "failed to write CNTRL register, ret=%d\n", ret); + return ret; + } + + reg_val = i2c_smbus_read_byte(chip->client); + if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) + != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) { + dev_err(&chip->client->dev, + "%s: failed: ADC not enabled\n", __func__); + return -1; + } + + ret = i2c_smbus_write_byte(chip->client, + (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); + if (ret < 0) { + dev_err(&chip->client->dev, + "failed to write ctrl reg: ret=%d\n", ret); + return ret; + } + + reg_val = i2c_smbus_read_byte(chip->client); + if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) { + dev_err(&chip->client->dev, + "%s: failed: STATUS - ADC not valid.\n", __func__); + return -ENODATA; + } + + lux_val = tsl2x7x_get_lux(indio_dev); + if (lux_val < 0) { + dev_err(&chip->client->dev, + "%s: failed to get lux\n", __func__); + return lux_val; + } + + gain_trim_val = ((chip->tsl2x7x_settings.als_cal_target) + * chip->tsl2x7x_settings.als_gain_trim) / lux_val; + if ((gain_trim_val < 250) || (gain_trim_val > 4000)) + return -ERANGE; + + chip->tsl2x7x_settings.als_gain_trim = gain_trim_val; + dev_info(&chip->client->dev, + "%s als_calibrate completed\n", chip->client->name); + + return (int)gain_trim_val; +} + +static int tsl2x7x_chip_on(struct iio_dev *indio_dev) +{ + int i; + int ret = 0; + u8 *dev_reg; + u8 utmp; + int als_count; + int als_time; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + u8 reg_val = 0; + + if (chip->pdata && chip->pdata->power_on) + chip->pdata->power_on(indio_dev); + + /* Non calculated parameters */ + chip->tsl2x7x_config[TSL2X7X_PRX_TIME] = + chip->tsl2x7x_settings.prx_time; + chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] = + chip->tsl2x7x_settings.wait_time; + chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] = + chip->tsl2x7x_settings.prox_config; + + chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] = + (chip->tsl2x7x_settings.als_thresh_low) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] = + (chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] = + (chip->tsl2x7x_settings.als_thresh_high) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] = + (chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] = + chip->tsl2x7x_settings.persistence; + + chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] = + chip->tsl2x7x_settings.prox_pulse_count; + chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] = + (chip->tsl2x7x_settings.prox_thres_low) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] = + (chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] = + (chip->tsl2x7x_settings.prox_thres_high) & 0xFF; + chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] = + (chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF; + + /* and make sure we're not already on */ + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { + /* if forcing a register update - turn off, then on */ + dev_info(&chip->client->dev, "device is already enabled\n"); + return -EINVAL; + } + + /* determine als integration register */ + als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270; + if (!als_count) + als_count = 1; /* ensure at least one cycle */ + + /* convert back to time (encompasses overrides) */ + als_time = (als_count * 27 + 5) / 10; + chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count; + + /* Set the gain based on tsl2x7x_settings struct */ + chip->tsl2x7x_config[TSL2X7X_GAIN] = + chip->tsl2x7x_settings.als_gain | + (TSL2X7X_mA100 | TSL2X7X_DIODE1) + | ((chip->tsl2x7x_settings.prox_gain) << 2); + + /* set chip struct re scaling and saturation */ + chip->als_saturation = als_count * 922; /* 90% of full scale */ + chip->als_time_scale = (als_time + 25) / 50; + + /* + * TSL2X7X Specific power-on / adc enable sequence + * Power on the device 1st. + */ + utmp = TSL2X7X_CNTL_PWR_ON; + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed on CNTRL reg.\n", __func__); + return ret; + } + + /* + * Use the following shadow copy for our delay before enabling ADC. + * Write all the registers. + */ + for (i = 0, dev_reg = chip->tsl2x7x_config; + i < TSL2X7X_MAX_CONFIG_REG; i++) { + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG + i, + *dev_reg++); + if (ret < 0) { + dev_err(&chip->client->dev, + "failed on write to reg %d.\n", i); + return ret; + } + } + + mdelay(3); /* Power-on settling time */ + + /* + * NOW enable the ADC + * initialize the desired mode of operation + */ + utmp = TSL2X7X_CNTL_PWR_ON | + TSL2X7X_CNTL_ADC_ENBL | + TSL2X7X_CNTL_PROX_DET_ENBL; + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: failed on 2nd CTRL reg.\n", __func__); + return ret; + } + + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING; + + if (chip->tsl2x7x_settings.interrupts_en != 0) { + dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n"); + + reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL; + if ((chip->tsl2x7x_settings.interrupts_en == 0x20) || + (chip->tsl2x7x_settings.interrupts_en == 0x30)) + reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL; + + reg_val |= chip->tsl2x7x_settings.interrupts_en; + ret = i2c_smbus_write_byte_data(chip->client, + (TSL2X7X_CMD_REG | + TSL2X7X_CNTRL), reg_val); + if (ret < 0) + dev_err(&chip->client->dev, + "%s: failed in tsl2x7x_IOCTL_INT_SET.\n", + __func__); + + /* Clear out any initial interrupts */ + ret = i2c_smbus_write_byte(chip->client, + TSL2X7X_CMD_REG | + TSL2X7X_CMD_SPL_FN | + TSL2X7X_CMD_PROXALS_INT_CLR); + if (ret < 0) { + dev_err(&chip->client->dev, + "%s: Failed to clear Int status\n", + __func__); + return ret; + } + } + + return ret; +} + +static int tsl2x7x_chip_off(struct iio_dev *indio_dev) +{ + int ret; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + /* turn device off */ + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; + + ret = i2c_smbus_write_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00); + + if (chip->pdata && chip->pdata->power_off) + chip->pdata->power_off(chip->client); + + return ret; +} + +/** + * tsl2x7x_invoke_change + * @indio_dev: pointer to IIO device + * + * Obtain and lock both ALS and PROX resources, + * determine and save device state (On/Off), + * cycle device to implement updated parameter, + * put device back into proper state, and unlock + * resource. + */ +static +int tsl2x7x_invoke_change(struct iio_dev *indio_dev) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int device_status = chip->tsl2x7x_chip_status; + + mutex_lock(&chip->als_mutex); + mutex_lock(&chip->prox_mutex); + + if (device_status == TSL2X7X_CHIP_WORKING) + tsl2x7x_chip_off(indio_dev); + + tsl2x7x_chip_on(indio_dev); + + if (device_status != TSL2X7X_CHIP_WORKING) + tsl2x7x_chip_off(indio_dev); + + mutex_unlock(&chip->prox_mutex); + mutex_unlock(&chip->als_mutex); + + return 0; +} + +static +void tsl2x7x_prox_calculate(int *data, int length, + struct tsl2x7x_prox_stat *statP) +{ + int i; + int sample_sum; + int tmp; + + if (!length) + length = 1; + + sample_sum = 0; + statP->min = INT_MAX; + statP->max = INT_MIN; + for (i = 0; i < length; i++) { + sample_sum += data[i]; + statP->min = min(statP->min, data[i]); + statP->max = max(statP->max, data[i]); + } + + statP->mean = sample_sum / length; + sample_sum = 0; + for (i = 0; i < length; i++) { + tmp = data[i] - statP->mean; + sample_sum += tmp * tmp; + } + statP->stddev = int_sqrt((long)sample_sum / length); +} + +/** + * tsl2x7x_prox_cal() - Calculates std. and sets thresholds. + * @indio_dev: pointer to IIO device + * + * Calculates a standard deviation based on the samples, + * and sets the threshold accordingly. + */ +static void tsl2x7x_prox_cal(struct iio_dev *indio_dev) +{ + int prox_history[MAX_SAMPLES_CAL + 1]; + int i; + struct tsl2x7x_prox_stat prox_stat_data[2]; + struct tsl2x7x_prox_stat *calP; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + u8 tmp_irq_settings; + u8 current_state = chip->tsl2x7x_chip_status; + + if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) { + dev_err(&chip->client->dev, + "max prox samples cal is too big: %d\n", + chip->tsl2x7x_settings.prox_max_samples_cal); + chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL; + } + + /* have to stop to change settings */ + tsl2x7x_chip_off(indio_dev); + + /* Enable proximity detection save just in case prox not wanted yet*/ + tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en; + chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL; + + /*turn on device if not already on*/ + tsl2x7x_chip_on(indio_dev); + + /*gather the samples*/ + for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) { + mdelay(15); + tsl2x7x_get_prox(indio_dev); + prox_history[i] = chip->prox_data; + dev_info(&chip->client->dev, "2 i=%d prox data= %d\n", + i, chip->prox_data); + } + + tsl2x7x_chip_off(indio_dev); + calP = &prox_stat_data[PROX_STAT_CAL]; + tsl2x7x_prox_calculate(prox_history, + chip->tsl2x7x_settings.prox_max_samples_cal, + calP); + chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean; + + dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n", + calP->min, calP->mean, calP->max); + dev_info(&chip->client->dev, + "%s proximity threshold set to %d\n", + chip->client->name, chip->tsl2x7x_settings.prox_thres_high); + + /* back to the way they were */ + chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings; + if (current_state == TSL2X7X_CHIP_WORKING) + tsl2x7x_chip_on(indio_dev); +} + +static ssize_t tsl2x7x_power_state_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + + return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status); +} + +static ssize_t tsl2x7x_power_state_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + bool value; + + if (strtobool(buf, &value)) + return -EINVAL; + + if (value) + tsl2x7x_chip_on(indio_dev); + else + tsl2x7x_chip_off(indio_dev); + + return len; +} + +static ssize_t tsl2x7x_gain_available_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + + switch (chip->id) { + case tsl2571: + case tsl2671: + case tmd2671: + case tsl2771: + case tmd2771: + return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128"); + } + + return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120"); +} + +static ssize_t tsl2x7x_prox_gain_available_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8"); +} + +static ssize_t tsl2x7x_als_time_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + int y, z; + + y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; + z = y * TSL2X7X_MIN_ITIME; + y /= 1000; + z %= 1000; + + return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); +} + +static ssize_t tsl2x7x_als_time_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + struct tsl2x7x_parse_result result; + int ret; + + ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); + if (ret) + return ret; + + result.fract /= 3; + chip->tsl2x7x_settings.als_time = + TSL2X7X_MAX_TIMER_CNT - (u8)result.fract; + + dev_info(&chip->client->dev, "%s: als time = %d", + __func__, chip->tsl2x7x_settings.als_time); + + tsl2x7x_invoke_change(indio_dev); + + return IIO_VAL_INT_PLUS_MICRO; +} + +static IIO_CONST_ATTR(in_illuminance0_integration_time_available, + ".00272 - .696"); + +static ssize_t tsl2x7x_als_cal_target_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + + return snprintf(buf, PAGE_SIZE, "%d\n", + chip->tsl2x7x_settings.als_cal_target); +} + +static ssize_t tsl2x7x_als_cal_target_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + unsigned long value; + + if (kstrtoul(buf, 0, &value)) + return -EINVAL; + + if (value) + chip->tsl2x7x_settings.als_cal_target = value; + + tsl2x7x_invoke_change(indio_dev); + + return len; +} + +/* persistence settings */ +static ssize_t tsl2x7x_als_persistence_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + int y, z, filter_delay; + + /* Determine integration time */ + y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; + z = y * TSL2X7X_MIN_ITIME; + filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F); + y = filter_delay / 1000; + z = filter_delay % 1000; + + return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); +} + +static ssize_t tsl2x7x_als_persistence_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + struct tsl2x7x_parse_result result; + int y, z, filter_delay; + int ret; + + ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); + if (ret) + return ret; + + y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; + z = y * TSL2X7X_MIN_ITIME; + + filter_delay = + DIV_ROUND_UP((result.integer * 1000) + result.fract, z); + + chip->tsl2x7x_settings.persistence &= 0xF0; + chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F); + + dev_info(&chip->client->dev, "%s: als persistence = %d", + __func__, filter_delay); + + tsl2x7x_invoke_change(indio_dev); + + return IIO_VAL_INT_PLUS_MICRO; +} + +static ssize_t tsl2x7x_prox_persistence_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + int y, z, filter_delay; + + /* Determine integration time */ + y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1; + z = y * TSL2X7X_MIN_ITIME; + filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4); + y = filter_delay / 1000; + z = filter_delay % 1000; + + return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); +} + +static ssize_t tsl2x7x_prox_persistence_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + struct tsl2x7x_parse_result result; + int y, z, filter_delay; + int ret; + + ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); + if (ret) + return ret; + + y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1; + z = y * TSL2X7X_MIN_ITIME; + + filter_delay = + DIV_ROUND_UP((result.integer * 1000) + result.fract, z); + + chip->tsl2x7x_settings.persistence &= 0x0F; + chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0); + + dev_info(&chip->client->dev, "%s: prox persistence = %d", + __func__, filter_delay); + + tsl2x7x_invoke_change(indio_dev); + + return IIO_VAL_INT_PLUS_MICRO; +} + +static ssize_t tsl2x7x_do_calibrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + bool value; + + if (strtobool(buf, &value)) + return -EINVAL; + + if (value) + tsl2x7x_als_calibrate(indio_dev); + + tsl2x7x_invoke_change(indio_dev); + + return len; +} + +static ssize_t tsl2x7x_luxtable_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); + int i = 0; + int offset = 0; + + while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) { + offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,%u,", + chip->tsl2x7x_device_lux[i].ratio, + chip->tsl2x7x_device_lux[i].ch0, + chip->tsl2x7x_device_lux[i].ch1); + if (chip->tsl2x7x_device_lux[i].ratio == 0) { + /* + * We just printed the first "0" entry. + * Now get rid of the extra "," and break. + */ + offset--; + break; + } + i++; + } + + offset += snprintf(buf + offset, PAGE_SIZE, "\n"); + return offset; +} + +static ssize_t tsl2x7x_luxtable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int value[ARRAY_SIZE(chip->tsl2x7x_device_lux) * 3 + 1]; + int n; + + get_options(buf, ARRAY_SIZE(value), value); + + /* We now have an array of ints starting at value[1], and + * enumerated by value[0]. + * We expect each group of three ints is one table entry, + * and the last table entry is all 0. + */ + n = value[0]; + if ((n % 3) || n < 6 || + n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) { + dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n); + return -EINVAL; + } + + if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) { + dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n); + return -EINVAL; + } + + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) + tsl2x7x_chip_off(indio_dev); + + /* Zero out the table */ + memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux)); + memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4)); + + tsl2x7x_invoke_change(indio_dev); + + return len; +} + +static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + bool value; + + if (strtobool(buf, &value)) + return -EINVAL; + + if (value) + tsl2x7x_prox_cal(indio_dev); + + tsl2x7x_invoke_change(indio_dev); + + return len; +} + +static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int ret; + + if (chan->type == IIO_INTENSITY) + ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10); + else + ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20); + + return ret; +} + +static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + int val) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (chan->type == IIO_INTENSITY) { + if (val) + chip->tsl2x7x_settings.interrupts_en |= 0x10; + else + chip->tsl2x7x_settings.interrupts_en &= 0x20; + } else { + if (val) + chip->tsl2x7x_settings.interrupts_en |= 0x20; + else + chip->tsl2x7x_settings.interrupts_en &= 0x10; + } + + tsl2x7x_invoke_change(indio_dev); + + return 0; +} + +static int tsl2x7x_write_thresh(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int val, int val2) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (chan->type == IIO_INTENSITY) { + switch (dir) { + case IIO_EV_DIR_RISING: + chip->tsl2x7x_settings.als_thresh_high = val; + break; + case IIO_EV_DIR_FALLING: + chip->tsl2x7x_settings.als_thresh_low = val; + break; + default: + return -EINVAL; + } + } else { + switch (dir) { + case IIO_EV_DIR_RISING: + chip->tsl2x7x_settings.prox_thres_high = val; + break; + case IIO_EV_DIR_FALLING: + chip->tsl2x7x_settings.prox_thres_low = val; + break; + default: + return -EINVAL; + } + } + + tsl2x7x_invoke_change(indio_dev); + + return 0; +} + +static int tsl2x7x_read_thresh(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int *val, int *val2) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + if (chan->type == IIO_INTENSITY) { + switch (dir) { + case IIO_EV_DIR_RISING: + *val = chip->tsl2x7x_settings.als_thresh_high; + break; + case IIO_EV_DIR_FALLING: + *val = chip->tsl2x7x_settings.als_thresh_low; + break; + default: + return -EINVAL; + } + } else { + switch (dir) { + case IIO_EV_DIR_RISING: + *val = chip->tsl2x7x_settings.prox_thres_high; + break; + case IIO_EV_DIR_FALLING: + *val = chip->tsl2x7x_settings.prox_thres_low; + break; + default: + return -EINVAL; + } + } + + return IIO_VAL_INT; +} + +static int tsl2x7x_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, + int *val2, + long mask) +{ + int ret = -EINVAL; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + switch (chan->type) { + case IIO_LIGHT: + tsl2x7x_get_lux(indio_dev); + *val = chip->als_cur_info.lux; + ret = IIO_VAL_INT; + break; + default: + return -EINVAL; + } + break; + case IIO_CHAN_INFO_RAW: + switch (chan->type) { + case IIO_INTENSITY: + tsl2x7x_get_lux(indio_dev); + if (chan->channel == 0) + *val = chip->als_cur_info.als_ch0; + else + *val = chip->als_cur_info.als_ch1; + ret = IIO_VAL_INT; + break; + case IIO_PROXIMITY: + tsl2x7x_get_prox(indio_dev); + *val = chip->prox_data; + ret = IIO_VAL_INT; + break; + default: + return -EINVAL; + } + break; + case IIO_CHAN_INFO_CALIBSCALE: + if (chan->type == IIO_LIGHT) + *val = + tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]; + else + *val = + tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain]; + ret = IIO_VAL_INT; + break; + case IIO_CHAN_INFO_CALIBBIAS: + *val = chip->tsl2x7x_settings.als_gain_trim; + ret = IIO_VAL_INT; + break; + + default: + ret = -EINVAL; + } + + return ret; +} + +static int tsl2x7x_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, + int val2, + long mask) +{ + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_CALIBSCALE: + if (chan->type == IIO_INTENSITY) { + switch (val) { + case 1: + chip->tsl2x7x_settings.als_gain = 0; + break; + case 8: + chip->tsl2x7x_settings.als_gain = 1; + break; + case 16: + chip->tsl2x7x_settings.als_gain = 2; + break; + case 120: + switch (chip->id) { + case tsl2572: + case tsl2672: + case tmd2672: + case tsl2772: + case tmd2772: + return -EINVAL; + } + chip->tsl2x7x_settings.als_gain = 3; + break; + case 128: + switch (chip->id) { + case tsl2571: + case tsl2671: + case tmd2671: + case tsl2771: + case tmd2771: + return -EINVAL; + } + chip->tsl2x7x_settings.als_gain = 3; + break; + default: + return -EINVAL; + } + } else { + switch (val) { + case 1: + chip->tsl2x7x_settings.prox_gain = 0; + break; + case 2: + chip->tsl2x7x_settings.prox_gain = 1; + break; + case 4: + chip->tsl2x7x_settings.prox_gain = 2; + break; + case 8: + chip->tsl2x7x_settings.prox_gain = 3; + break; + default: + return -EINVAL; + } + } + break; + case IIO_CHAN_INFO_CALIBBIAS: + chip->tsl2x7x_settings.als_gain_trim = val; + break; + + default: + return -EINVAL; + } + + tsl2x7x_invoke_change(indio_dev); + + return 0; +} + +static DEVICE_ATTR(power_state, 0644, + tsl2x7x_power_state_show, tsl2x7x_power_state_store); + +static DEVICE_ATTR(in_proximity0_calibscale_available, 0444, + tsl2x7x_prox_gain_available_show, NULL); + +static DEVICE_ATTR(in_illuminance0_calibscale_available, 0444, + tsl2x7x_gain_available_show, NULL); + +static DEVICE_ATTR(in_illuminance0_integration_time, 0644, + tsl2x7x_als_time_show, tsl2x7x_als_time_store); + +static DEVICE_ATTR(in_illuminance0_target_input, 0644, + tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store); + +static DEVICE_ATTR(in_illuminance0_calibrate, 0200, NULL, + tsl2x7x_do_calibrate); + +static DEVICE_ATTR(in_proximity0_calibrate, 0200, NULL, + tsl2x7x_do_prox_calibrate); + +static DEVICE_ATTR(in_illuminance0_lux_table, 0644, + tsl2x7x_luxtable_show, tsl2x7x_luxtable_store); + +static DEVICE_ATTR(in_intensity0_thresh_period, 0644, + tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store); + +static DEVICE_ATTR(in_proximity0_thresh_period, 0644, + tsl2x7x_prox_persistence_show, tsl2x7x_prox_persistence_store); + +/* Use the default register values to identify the Taos device */ +static int tsl2x7x_device_id(unsigned char *id, int target) +{ + switch (target) { + case tsl2571: + case tsl2671: + case tsl2771: + return (*id & 0xf0) == TRITON_ID; + case tmd2671: + case tmd2771: + return (*id & 0xf0) == HALIBUT_ID; + case tsl2572: + case tsl2672: + case tmd2672: + case tsl2772: + case tmd2772: + return (*id & 0xf0) == SWORDFISH_ID; + } + + return -EINVAL; +} + +static irqreturn_t tsl2x7x_event_handler(int irq, void *private) +{ + struct iio_dev *indio_dev = private; + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + s64 timestamp = iio_get_time_ns(indio_dev); + int ret; + u8 value; + + value = i2c_smbus_read_byte_data(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_STATUS); + + /* What type of interrupt do we need to process */ + if (value & TSL2X7X_STA_PRX_INTR) { + tsl2x7x_get_prox(indio_dev); /* freshen data for ABI */ + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, + 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + timestamp); + } + + if (value & TSL2X7X_STA_ALS_INTR) { + tsl2x7x_get_lux(indio_dev); /* freshen data for ABI */ + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_LIGHT, + 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + timestamp); + } + /* Clear interrupt now that we have handled it. */ + ret = i2c_smbus_write_byte(chip->client, + TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN | + TSL2X7X_CMD_PROXALS_INT_CLR); + if (ret < 0) + dev_err(&chip->client->dev, + "Failed to clear irq from event handler. err = %d\n", + ret); + + return IRQ_HANDLED; +} + +static struct attribute *tsl2x7x_ALS_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_in_illuminance0_calibscale_available.attr, + &dev_attr_in_illuminance0_integration_time.attr, + &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr, + &dev_attr_in_illuminance0_target_input.attr, + &dev_attr_in_illuminance0_calibrate.attr, + &dev_attr_in_illuminance0_lux_table.attr, + NULL +}; + +static struct attribute *tsl2x7x_PRX_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_in_proximity0_calibrate.attr, + NULL +}; + +static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_in_illuminance0_calibscale_available.attr, + &dev_attr_in_illuminance0_integration_time.attr, + &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr, + &dev_attr_in_illuminance0_target_input.attr, + &dev_attr_in_illuminance0_calibrate.attr, + &dev_attr_in_illuminance0_lux_table.attr, + &dev_attr_in_proximity0_calibrate.attr, + NULL +}; + +static struct attribute *tsl2x7x_PRX2_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_in_proximity0_calibrate.attr, + &dev_attr_in_proximity0_calibscale_available.attr, + NULL +}; + +static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = { + &dev_attr_power_state.attr, + &dev_attr_in_illuminance0_calibscale_available.attr, + &dev_attr_in_illuminance0_integration_time.attr, + &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr, + &dev_attr_in_illuminance0_target_input.attr, + &dev_attr_in_illuminance0_calibrate.attr, + &dev_attr_in_illuminance0_lux_table.attr, + &dev_attr_in_proximity0_calibrate.attr, + &dev_attr_in_proximity0_calibscale_available.attr, + NULL +}; + +static struct attribute *tsl2X7X_ALS_event_attrs[] = { + &dev_attr_in_intensity0_thresh_period.attr, + NULL, +}; + +static struct attribute *tsl2X7X_PRX_event_attrs[] = { + &dev_attr_in_proximity0_thresh_period.attr, + NULL, +}; + +static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = { + &dev_attr_in_intensity0_thresh_period.attr, + &dev_attr_in_proximity0_thresh_period.attr, + NULL, +}; + +static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = { + [ALS] = { + .attrs = tsl2x7x_ALS_device_attrs, + }, + [PRX] = { + .attrs = tsl2x7x_PRX_device_attrs, + }, + [ALSPRX] = { + .attrs = tsl2x7x_ALSPRX_device_attrs, + }, + [PRX2] = { + .attrs = tsl2x7x_PRX2_device_attrs, + }, + [ALSPRX2] = { + .attrs = tsl2x7x_ALSPRX2_device_attrs, + }, +}; + +static const struct attribute_group tsl2X7X_event_attr_group_tbl[] = { + [ALS] = { + .attrs = tsl2X7X_ALS_event_attrs, + .name = "events", + }, + [PRX] = { + .attrs = tsl2X7X_PRX_event_attrs, + .name = "events", + }, + [ALSPRX] = { + .attrs = tsl2X7X_ALSPRX_event_attrs, + .name = "events", + }, +}; + +static const struct iio_info tsl2X7X_device_info[] = { + [ALS] = { + .attrs = &tsl2X7X_device_attr_group_tbl[ALS], + .event_attrs = &tsl2X7X_event_attr_group_tbl[ALS], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [PRX] = { + .attrs = &tsl2X7X_device_attr_group_tbl[PRX], + .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [ALSPRX] = { + .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX], + .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [PRX2] = { + .attrs = &tsl2X7X_device_attr_group_tbl[PRX2], + .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, + [ALSPRX2] = { + .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2], + .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX], + .driver_module = THIS_MODULE, + .read_raw = &tsl2x7x_read_raw, + .write_raw = &tsl2x7x_write_raw, + .read_event_value = &tsl2x7x_read_thresh, + .write_event_value = &tsl2x7x_write_thresh, + .read_event_config = &tsl2x7x_read_interrupt_config, + .write_event_config = &tsl2x7x_write_interrupt_config, + }, +}; + +static const struct iio_event_spec tsl2x7x_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, +}; + +static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = { + [ALS] = { + .channel = { + { + .type = IIO_LIGHT, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_CALIBSCALE) | + BIT(IIO_CHAN_INFO_CALIBBIAS), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 1, + }, + }, + .chan_table_elements = 3, + .info = &tsl2X7X_device_info[ALS], + }, + [PRX] = { + .channel = { + { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, + }, + .chan_table_elements = 1, + .info = &tsl2X7X_device_info[PRX], + }, + [ALSPRX] = { + .channel = { + { + .type = IIO_LIGHT, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_CALIBSCALE) | + BIT(IIO_CHAN_INFO_CALIBBIAS), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + }, { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, + }, + .chan_table_elements = 4, + .info = &tsl2X7X_device_info[ALSPRX], + }, + [PRX2] = { + .channel = { + { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_CALIBSCALE), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, + }, + .chan_table_elements = 1, + .info = &tsl2X7X_device_info[PRX2], + }, + [ALSPRX2] = { + .channel = { + { + .type = IIO_LIGHT, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_CALIBSCALE) | + BIT(IIO_CHAN_INFO_CALIBBIAS), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, { + .type = IIO_INTENSITY, + .indexed = 1, + .channel = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + }, { + .type = IIO_PROXIMITY, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_CALIBSCALE), + .event_spec = tsl2x7x_events, + .num_event_specs = ARRAY_SIZE(tsl2x7x_events), + }, + }, + .chan_table_elements = 4, + .info = &tsl2X7X_device_info[ALSPRX2], + }, +}; + +static int tsl2x7x_probe(struct i2c_client *clientp, + const struct i2c_device_id *id) +{ + int ret; + unsigned char device_id; + struct iio_dev *indio_dev; + struct tsl2X7X_chip *chip; + + indio_dev = devm_iio_device_alloc(&clientp->dev, sizeof(*chip)); + if (!indio_dev) + return -ENOMEM; + + chip = iio_priv(indio_dev); + chip->client = clientp; + i2c_set_clientdata(clientp, indio_dev); + + ret = tsl2x7x_i2c_read(chip->client, + TSL2X7X_CHIPID, &device_id); + if (ret < 0) + return ret; + + if ((!tsl2x7x_device_id(&device_id, id->driver_data)) || + (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) { + dev_info(&chip->client->dev, + "%s: i2c device found does not match expected id\n", + __func__); + return -EINVAL; + } + + ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); + if (ret < 0) { + dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n", + ret); + return ret; + } + + /* + * ALS and PROX functions can be invoked via user space poll + * or H/W interrupt. If busy return last sample. + */ + mutex_init(&chip->als_mutex); + mutex_init(&chip->prox_mutex); + + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN; + chip->pdata = dev_get_platdata(&clientp->dev); + chip->id = id->driver_data; + chip->chip_info = + &tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]]; + + indio_dev->info = chip->chip_info->info; + indio_dev->dev.parent = &clientp->dev; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->name = chip->client->name; + indio_dev->channels = chip->chip_info->channel; + indio_dev->num_channels = chip->chip_info->chan_table_elements; + + if (clientp->irq) { + ret = devm_request_threaded_irq(&clientp->dev, clientp->irq, + NULL, + &tsl2x7x_event_handler, + IRQF_TRIGGER_RISING | + IRQF_ONESHOT, + "TSL2X7X_event", + indio_dev); + if (ret) { + dev_err(&clientp->dev, + "%s: irq request failed", __func__); + return ret; + } + } + + /* Load up the defaults */ + tsl2x7x_defaults(chip); + /* Make sure the chip is on */ + tsl2x7x_chip_on(indio_dev); + + ret = iio_device_register(indio_dev); + if (ret) { + dev_err(&clientp->dev, + "%s: iio registration failed\n", __func__); + return ret; + } + + dev_info(&clientp->dev, "%s Light sensor found.\n", id->name); + + return 0; +} + +static int tsl2x7x_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int ret = 0; + + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { + ret = tsl2x7x_chip_off(indio_dev); + chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; + } + + if (chip->pdata && chip->pdata->platform_power) { + pm_message_t pmm = {PM_EVENT_SUSPEND}; + + chip->pdata->platform_power(dev, pmm); + } + + return ret; +} + +static int tsl2x7x_resume(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct tsl2X7X_chip *chip = iio_priv(indio_dev); + int ret = 0; + + if (chip->pdata && chip->pdata->platform_power) { + pm_message_t pmm = {PM_EVENT_RESUME}; + + chip->pdata->platform_power(dev, pmm); + } + + if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED) + ret = tsl2x7x_chip_on(indio_dev); + + return ret; +} + +static int tsl2x7x_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + + tsl2x7x_chip_off(indio_dev); + + iio_device_unregister(indio_dev); + + return 0; +} + +static struct i2c_device_id tsl2x7x_idtable[] = { + { "tsl2571", tsl2571 }, + { "tsl2671", tsl2671 }, + { "tmd2671", tmd2671 }, + { "tsl2771", tsl2771 }, + { "tmd2771", tmd2771 }, + { "tsl2572", tsl2572 }, + { "tsl2672", tsl2672 }, + { "tmd2672", tmd2672 }, + { "tsl2772", tsl2772 }, + { "tmd2772", tmd2772 }, + {} +}; + +MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable); + +static const struct dev_pm_ops tsl2x7x_pm_ops = { + .suspend = tsl2x7x_suspend, + .resume = tsl2x7x_resume, +}; + +/* Driver definition */ +static struct i2c_driver tsl2x7x_driver = { + .driver = { + .name = "tsl2x7x", + .pm = &tsl2x7x_pm_ops, + }, + .id_table = tsl2x7x_idtable, + .probe = tsl2x7x_probe, + .remove = tsl2x7x_remove, +}; + +module_i2c_driver(tsl2x7x_driver); + +MODULE_AUTHOR("J. August Brenner"); +MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c deleted file mode 100644 index 8121a5188638..000000000000 --- a/drivers/staging/iio/light/tsl2x7x_core.c +++ /dev/null @@ -1,2063 +0,0 @@ -/* - * Device driver for monitoring ambient light intensity in (lux) - * and proximity detection (prox) within the TAOS TSL2X7X family of devices. - * - * Copyright (c) 2012, TAOS Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "tsl2x7x.h" - -/* Cal defs*/ -#define PROX_STAT_CAL 0 -#define PROX_STAT_SAMP 1 -#define MAX_SAMPLES_CAL 200 - -/* TSL2X7X Device ID */ -#define TRITON_ID 0x00 -#define SWORDFISH_ID 0x30 -#define HALIBUT_ID 0x20 - -/* Lux calculation constants */ -#define TSL2X7X_LUX_CALC_OVER_FLOW 65535 - -/* TAOS Register definitions - note: - * depending on device, some of these register are not used and the - * register address is benign. - */ -/* 2X7X register offsets */ -#define TSL2X7X_MAX_CONFIG_REG 16 - -/* Device Registers and Masks */ -#define TSL2X7X_CNTRL 0x00 -#define TSL2X7X_ALS_TIME 0X01 -#define TSL2X7X_PRX_TIME 0x02 -#define TSL2X7X_WAIT_TIME 0x03 -#define TSL2X7X_ALS_MINTHRESHLO 0X04 -#define TSL2X7X_ALS_MINTHRESHHI 0X05 -#define TSL2X7X_ALS_MAXTHRESHLO 0X06 -#define TSL2X7X_ALS_MAXTHRESHHI 0X07 -#define TSL2X7X_PRX_MINTHRESHLO 0X08 -#define TSL2X7X_PRX_MINTHRESHHI 0X09 -#define TSL2X7X_PRX_MAXTHRESHLO 0X0A -#define TSL2X7X_PRX_MAXTHRESHHI 0X0B -#define TSL2X7X_PERSISTENCE 0x0C -#define TSL2X7X_PRX_CONFIG 0x0D -#define TSL2X7X_PRX_COUNT 0x0E -#define TSL2X7X_GAIN 0x0F -#define TSL2X7X_NOTUSED 0x10 -#define TSL2X7X_REVID 0x11 -#define TSL2X7X_CHIPID 0x12 -#define TSL2X7X_STATUS 0x13 -#define TSL2X7X_ALS_CHAN0LO 0x14 -#define TSL2X7X_ALS_CHAN0HI 0x15 -#define TSL2X7X_ALS_CHAN1LO 0x16 -#define TSL2X7X_ALS_CHAN1HI 0x17 -#define TSL2X7X_PRX_LO 0x18 -#define TSL2X7X_PRX_HI 0x19 - -/* tsl2X7X cmd reg masks */ -#define TSL2X7X_CMD_REG 0x80 -#define TSL2X7X_CMD_SPL_FN 0x60 - -#define TSL2X7X_CMD_PROX_INT_CLR 0X05 -#define TSL2X7X_CMD_ALS_INT_CLR 0x06 -#define TSL2X7X_CMD_PROXALS_INT_CLR 0X07 - -/* tsl2X7X cntrl reg masks */ -#define TSL2X7X_CNTL_ADC_ENBL 0x02 -#define TSL2X7X_CNTL_PWR_ON 0x01 - -/* tsl2X7X status reg masks */ -#define TSL2X7X_STA_ADC_VALID 0x01 -#define TSL2X7X_STA_PRX_VALID 0x02 -#define TSL2X7X_STA_ADC_PRX_VALID (TSL2X7X_STA_ADC_VALID |\ - TSL2X7X_STA_PRX_VALID) -#define TSL2X7X_STA_ALS_INTR 0x10 -#define TSL2X7X_STA_PRX_INTR 0x20 - -/* tsl2X7X cntrl reg masks */ -#define TSL2X7X_CNTL_REG_CLEAR 0x00 -#define TSL2X7X_CNTL_PROX_INT_ENBL 0X20 -#define TSL2X7X_CNTL_ALS_INT_ENBL 0X10 -#define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08 -#define TSL2X7X_CNTL_PROX_DET_ENBL 0X04 -#define TSL2X7X_CNTL_PWRON 0x01 -#define TSL2X7X_CNTL_ALSPON_ENBL 0x03 -#define TSL2X7X_CNTL_INTALSPON_ENBL 0x13 -#define TSL2X7X_CNTL_PROXPON_ENBL 0x0F -#define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F - -/*Prox diode to use */ -#define TSL2X7X_DIODE0 0x10 -#define TSL2X7X_DIODE1 0x20 -#define TSL2X7X_DIODE_BOTH 0x30 - -/* LED Power */ -#define TSL2X7X_mA100 0x00 -#define TSL2X7X_mA50 0x40 -#define TSL2X7X_mA25 0x80 -#define TSL2X7X_mA13 0xD0 -#define TSL2X7X_MAX_TIMER_CNT (0xFF) - -#define TSL2X7X_MIN_ITIME 3 - -/* TAOS txx2x7x Device family members */ -enum { - tsl2571, - tsl2671, - tmd2671, - tsl2771, - tmd2771, - tsl2572, - tsl2672, - tmd2672, - tsl2772, - tmd2772 -}; - -enum { - TSL2X7X_CHIP_UNKNOWN = 0, - TSL2X7X_CHIP_WORKING = 1, - TSL2X7X_CHIP_SUSPENDED = 2 -}; - -struct tsl2x7x_parse_result { - int integer; - int fract; -}; - -/* Per-device data */ -struct tsl2x7x_als_info { - u16 als_ch0; - u16 als_ch1; - u16 lux; -}; - -struct tsl2x7x_prox_stat { - int min; - int max; - int mean; - unsigned long stddev; -}; - -struct tsl2x7x_chip_info { - int chan_table_elements; - struct iio_chan_spec channel[4]; - const struct iio_info *info; -}; - -struct tsl2X7X_chip { - kernel_ulong_t id; - struct mutex prox_mutex; - struct mutex als_mutex; - struct i2c_client *client; - u16 prox_data; - struct tsl2x7x_als_info als_cur_info; - struct tsl2x7x_settings tsl2x7x_settings; - struct tsl2X7X_platform_data *pdata; - int als_time_scale; - int als_saturation; - int tsl2x7x_chip_status; - u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG]; - const struct tsl2x7x_chip_info *chip_info; - const struct iio_info *info; - s64 event_timestamp; - /* - * This structure is intentionally large to accommodate - * updates via sysfs. - * Sized to 9 = max 8 segments + 1 termination segment - */ - struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE]; -}; - -/* Different devices require different coefficents */ -static const struct tsl2x7x_lux tsl2x71_lux_table[] = { - { 14461, 611, 1211 }, - { 18540, 352, 623 }, - { 0, 0, 0 }, -}; - -static const struct tsl2x7x_lux tmd2x71_lux_table[] = { - { 11635, 115, 256 }, - { 15536, 87, 179 }, - { 0, 0, 0 }, -}; - -static const struct tsl2x7x_lux tsl2x72_lux_table[] = { - { 14013, 466, 917 }, - { 18222, 310, 552 }, - { 0, 0, 0 }, -}; - -static const struct tsl2x7x_lux tmd2x72_lux_table[] = { - { 13218, 130, 262 }, - { 17592, 92, 169 }, - { 0, 0, 0 }, -}; - -static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = { - [tsl2571] = tsl2x71_lux_table, - [tsl2671] = tsl2x71_lux_table, - [tmd2671] = tmd2x71_lux_table, - [tsl2771] = tsl2x71_lux_table, - [tmd2771] = tmd2x71_lux_table, - [tsl2572] = tsl2x72_lux_table, - [tsl2672] = tsl2x72_lux_table, - [tmd2672] = tmd2x72_lux_table, - [tsl2772] = tsl2x72_lux_table, - [tmd2772] = tmd2x72_lux_table, -}; - -static const struct tsl2x7x_settings tsl2x7x_default_settings = { - .als_time = 219, /* 101 ms */ - .als_gain = 0, - .prx_time = 254, /* 5.4 ms */ - .prox_gain = 1, - .wait_time = 245, - .prox_config = 0, - .als_gain_trim = 1000, - .als_cal_target = 150, - .als_thresh_low = 200, - .als_thresh_high = 256, - .persistence = 255, - .interrupts_en = 0, - .prox_thres_low = 0, - .prox_thres_high = 512, - .prox_max_samples_cal = 30, - .prox_pulse_count = 8 -}; - -static const s16 tsl2X7X_als_gainadj[] = { - 1, - 8, - 16, - 120 -}; - -static const s16 tsl2X7X_prx_gainadj[] = { - 1, - 2, - 4, - 8 -}; - -/* Channel variations */ -enum { - ALS, - PRX, - ALSPRX, - PRX2, - ALSPRX2, -}; - -static const u8 device_channel_config[] = { - ALS, - PRX, - PRX, - ALSPRX, - ALSPRX, - ALS, - PRX2, - PRX2, - ALSPRX2, - ALSPRX2 -}; - -/** - * tsl2x7x_i2c_read() - Read a byte from a register. - * @client: i2c client - * @reg: device register to read from - * @*val: pointer to location to store register contents. - * - */ -static int -tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val) -{ - int ret; - - /* select register to write */ - ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg)); - if (ret < 0) { - dev_err(&client->dev, "failed to write register %x\n", reg); - return ret; - } - - /* read the data */ - ret = i2c_smbus_read_byte(client); - if (ret >= 0) - *val = (u8)ret; - else - dev_err(&client->dev, "failed to read register %x\n", reg); - - return ret; -} - -/** - * tsl2x7x_get_lux() - Reads and calculates current lux value. - * @indio_dev: pointer to IIO device - * - * The raw ch0 and ch1 values of the ambient light sensed in the last - * integration cycle are read from the device. - * Time scale factor array values are adjusted based on the integration time. - * The raw values are multiplied by a scale factor, and device gain is obtained - * using gain index. Limit checks are done next, then the ratio of a multiple - * of ch1 value, to the ch0 value, is calculated. Array tsl2x7x_device_lux[] - * is then scanned to find the first ratio value that is just above the ratio - * we just calculated. The ch0 and ch1 multiplier constants in the array are - * then used along with the time scale factor array values, to calculate the - * lux. - */ -static int tsl2x7x_get_lux(struct iio_dev *indio_dev) -{ - u16 ch0, ch1; /* separated ch0/ch1 data from device */ - u32 lux; /* raw lux calculated from device data */ - u64 lux64; - u32 ratio; - u8 buf[4]; - struct tsl2x7x_lux *p; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - int i, ret; - u32 ch0lux = 0; - u32 ch1lux = 0; - - if (mutex_trylock(&chip->als_mutex) == 0) - return chip->als_cur_info.lux; /* busy, so return LAST VALUE */ - - if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) { - /* device is not enabled */ - dev_err(&chip->client->dev, "%s: device is not enabled\n", - __func__); - ret = -EBUSY; - goto out_unlock; - } - - ret = tsl2x7x_i2c_read(chip->client, - (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]); - if (ret < 0) { - dev_err(&chip->client->dev, - "%s: Failed to read STATUS Reg\n", __func__); - goto out_unlock; - } - /* is data new & valid */ - if (!(buf[0] & TSL2X7X_STA_ADC_VALID)) { - dev_err(&chip->client->dev, - "%s: data not valid yet\n", __func__); - ret = chip->als_cur_info.lux; /* return LAST VALUE */ - goto out_unlock; - } - - for (i = 0; i < 4; i++) { - ret = tsl2x7x_i2c_read(chip->client, - (TSL2X7X_CMD_REG | - (TSL2X7X_ALS_CHAN0LO + i)), &buf[i]); - if (ret < 0) { - dev_err(&chip->client->dev, - "failed to read. err=%x\n", ret); - goto out_unlock; - } - } - - /* clear any existing interrupt status */ - ret = i2c_smbus_write_byte(chip->client, - (TSL2X7X_CMD_REG | - TSL2X7X_CMD_SPL_FN | - TSL2X7X_CMD_ALS_INT_CLR)); - if (ret < 0) { - dev_err(&chip->client->dev, - "i2c_write_command failed - err = %d\n", ret); - goto out_unlock; /* have no data, so return failure */ - } - - /* extract ALS/lux data */ - ch0 = le16_to_cpup((const __le16 *)&buf[0]); - ch1 = le16_to_cpup((const __le16 *)&buf[2]); - - chip->als_cur_info.als_ch0 = ch0; - chip->als_cur_info.als_ch1 = ch1; - - if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) { - lux = TSL2X7X_LUX_CALC_OVER_FLOW; - goto return_max; - } - - if (!ch0) { - /* have no data, so return LAST VALUE */ - ret = chip->als_cur_info.lux; - goto out_unlock; - } - /* calculate ratio */ - ratio = (ch1 << 15) / ch0; - /* convert to unscaled lux using the pointer to the table */ - p = (struct tsl2x7x_lux *)chip->tsl2x7x_device_lux; - while (p->ratio != 0 && p->ratio < ratio) - p++; - - if (p->ratio == 0) { - lux = 0; - } else { - ch0lux = DIV_ROUND_UP(ch0 * p->ch0, - tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); - ch1lux = DIV_ROUND_UP(ch1 * p->ch1, - tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); - lux = ch0lux - ch1lux; - } - - /* note: lux is 31 bit max at this point */ - if (ch1lux > ch0lux) { - dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n"); - ret = chip->als_cur_info.lux; - goto out_unlock; - } - - /* adjust for active time scale */ - if (chip->als_time_scale == 0) - lux = 0; - else - lux = (lux + (chip->als_time_scale >> 1)) / - chip->als_time_scale; - - /* adjust for active gain scale - * The tsl2x7x_device_lux tables have a factor of 256 built-in. - * User-specified gain provides a multiplier. - * Apply user-specified gain before shifting right to retain precision. - * Use 64 bits to avoid overflow on multiplication. - * Then go back to 32 bits before division to avoid using div_u64(). - */ - - lux64 = lux; - lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim; - lux64 >>= 8; - lux = lux64; - lux = (lux + 500) / 1000; - - if (lux > TSL2X7X_LUX_CALC_OVER_FLOW) /* check for overflow */ - lux = TSL2X7X_LUX_CALC_OVER_FLOW; - - /* Update the structure with the latest lux. */ -return_max: - chip->als_cur_info.lux = lux; - ret = lux; - -out_unlock: - mutex_unlock(&chip->als_mutex); - - return ret; -} - -/** - * tsl2x7x_get_prox() - Reads proximity data registers and updates - * chip->prox_data. - * - * @indio_dev: pointer to IIO device - */ -static int tsl2x7x_get_prox(struct iio_dev *indio_dev) -{ - int i; - int ret; - u8 status; - u8 chdata[2]; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - if (mutex_trylock(&chip->prox_mutex) == 0) { - dev_err(&chip->client->dev, - "%s: Can't get prox mutex\n", __func__); - return -EBUSY; - } - - ret = tsl2x7x_i2c_read(chip->client, - (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status); - if (ret < 0) { - dev_err(&chip->client->dev, "i2c err=%d\n", ret); - goto prox_poll_err; - } - - switch (chip->id) { - case tsl2571: - case tsl2671: - case tmd2671: - case tsl2771: - case tmd2771: - if (!(status & TSL2X7X_STA_ADC_VALID)) - goto prox_poll_err; - break; - case tsl2572: - case tsl2672: - case tmd2672: - case tsl2772: - case tmd2772: - if (!(status & TSL2X7X_STA_PRX_VALID)) - goto prox_poll_err; - break; - } - - for (i = 0; i < 2; i++) { - ret = tsl2x7x_i2c_read(chip->client, - (TSL2X7X_CMD_REG | - (TSL2X7X_PRX_LO + i)), &chdata[i]); - if (ret < 0) - goto prox_poll_err; - } - - chip->prox_data = - le16_to_cpup((const __le16 *)&chdata[0]); - -prox_poll_err: - - mutex_unlock(&chip->prox_mutex); - - return chip->prox_data; -} - -/** - * tsl2x7x_defaults() - Populates the device nominal operating parameters - * with those provided by a 'platform' data struct or - * with prefined defaults. - * - * @chip: pointer to device structure. - */ -static void tsl2x7x_defaults(struct tsl2X7X_chip *chip) -{ - /* If Operational settings defined elsewhere.. */ - if (chip->pdata && chip->pdata->platform_default_settings) - memcpy(&chip->tsl2x7x_settings, - chip->pdata->platform_default_settings, - sizeof(tsl2x7x_default_settings)); - else - memcpy(&chip->tsl2x7x_settings, - &tsl2x7x_default_settings, - sizeof(tsl2x7x_default_settings)); - - /* Load up the proper lux table. */ - if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0) - memcpy(chip->tsl2x7x_device_lux, - chip->pdata->platform_lux_table, - sizeof(chip->pdata->platform_lux_table)); - else - memcpy(chip->tsl2x7x_device_lux, - (struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id], - MAX_DEFAULT_TABLE_BYTES); -} - -/** - * tsl2x7x_als_calibrate() - Obtain single reading and calculate - * the als_gain_trim. - * - * @indio_dev: pointer to IIO device - */ -static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - u8 reg_val; - int gain_trim_val; - int ret; - int lux_val; - - ret = i2c_smbus_write_byte(chip->client, - (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); - if (ret < 0) { - dev_err(&chip->client->dev, - "failed to write CNTRL register, ret=%d\n", ret); - return ret; - } - - reg_val = i2c_smbus_read_byte(chip->client); - if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) - != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) { - dev_err(&chip->client->dev, - "%s: failed: ADC not enabled\n", __func__); - return -1; - } - - ret = i2c_smbus_write_byte(chip->client, - (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); - if (ret < 0) { - dev_err(&chip->client->dev, - "failed to write ctrl reg: ret=%d\n", ret); - return ret; - } - - reg_val = i2c_smbus_read_byte(chip->client); - if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) { - dev_err(&chip->client->dev, - "%s: failed: STATUS - ADC not valid.\n", __func__); - return -ENODATA; - } - - lux_val = tsl2x7x_get_lux(indio_dev); - if (lux_val < 0) { - dev_err(&chip->client->dev, - "%s: failed to get lux\n", __func__); - return lux_val; - } - - gain_trim_val = ((chip->tsl2x7x_settings.als_cal_target) - * chip->tsl2x7x_settings.als_gain_trim) / lux_val; - if ((gain_trim_val < 250) || (gain_trim_val > 4000)) - return -ERANGE; - - chip->tsl2x7x_settings.als_gain_trim = gain_trim_val; - dev_info(&chip->client->dev, - "%s als_calibrate completed\n", chip->client->name); - - return (int)gain_trim_val; -} - -static int tsl2x7x_chip_on(struct iio_dev *indio_dev) -{ - int i; - int ret = 0; - u8 *dev_reg; - u8 utmp; - int als_count; - int als_time; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - u8 reg_val = 0; - - if (chip->pdata && chip->pdata->power_on) - chip->pdata->power_on(indio_dev); - - /* Non calculated parameters */ - chip->tsl2x7x_config[TSL2X7X_PRX_TIME] = - chip->tsl2x7x_settings.prx_time; - chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] = - chip->tsl2x7x_settings.wait_time; - chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] = - chip->tsl2x7x_settings.prox_config; - - chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] = - (chip->tsl2x7x_settings.als_thresh_low) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] = - (chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] = - (chip->tsl2x7x_settings.als_thresh_high) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] = - (chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] = - chip->tsl2x7x_settings.persistence; - - chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] = - chip->tsl2x7x_settings.prox_pulse_count; - chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] = - (chip->tsl2x7x_settings.prox_thres_low) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] = - (chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] = - (chip->tsl2x7x_settings.prox_thres_high) & 0xFF; - chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] = - (chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF; - - /* and make sure we're not already on */ - if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { - /* if forcing a register update - turn off, then on */ - dev_info(&chip->client->dev, "device is already enabled\n"); - return -EINVAL; - } - - /* determine als integration register */ - als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270; - if (!als_count) - als_count = 1; /* ensure at least one cycle */ - - /* convert back to time (encompasses overrides) */ - als_time = (als_count * 27 + 5) / 10; - chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count; - - /* Set the gain based on tsl2x7x_settings struct */ - chip->tsl2x7x_config[TSL2X7X_GAIN] = - chip->tsl2x7x_settings.als_gain | - (TSL2X7X_mA100 | TSL2X7X_DIODE1) - | ((chip->tsl2x7x_settings.prox_gain) << 2); - - /* set chip struct re scaling and saturation */ - chip->als_saturation = als_count * 922; /* 90% of full scale */ - chip->als_time_scale = (als_time + 25) / 50; - - /* - * TSL2X7X Specific power-on / adc enable sequence - * Power on the device 1st. - */ - utmp = TSL2X7X_CNTL_PWR_ON; - ret = i2c_smbus_write_byte_data(chip->client, - TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); - if (ret < 0) { - dev_err(&chip->client->dev, - "%s: failed on CNTRL reg.\n", __func__); - return ret; - } - - /* - * Use the following shadow copy for our delay before enabling ADC. - * Write all the registers. - */ - for (i = 0, dev_reg = chip->tsl2x7x_config; - i < TSL2X7X_MAX_CONFIG_REG; i++) { - ret = i2c_smbus_write_byte_data(chip->client, - TSL2X7X_CMD_REG + i, - *dev_reg++); - if (ret < 0) { - dev_err(&chip->client->dev, - "failed on write to reg %d.\n", i); - return ret; - } - } - - mdelay(3); /* Power-on settling time */ - - /* - * NOW enable the ADC - * initialize the desired mode of operation - */ - utmp = TSL2X7X_CNTL_PWR_ON | - TSL2X7X_CNTL_ADC_ENBL | - TSL2X7X_CNTL_PROX_DET_ENBL; - ret = i2c_smbus_write_byte_data(chip->client, - TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); - if (ret < 0) { - dev_err(&chip->client->dev, - "%s: failed on 2nd CTRL reg.\n", __func__); - return ret; - } - - chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING; - - if (chip->tsl2x7x_settings.interrupts_en != 0) { - dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n"); - - reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL; - if ((chip->tsl2x7x_settings.interrupts_en == 0x20) || - (chip->tsl2x7x_settings.interrupts_en == 0x30)) - reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL; - - reg_val |= chip->tsl2x7x_settings.interrupts_en; - ret = i2c_smbus_write_byte_data(chip->client, - (TSL2X7X_CMD_REG | - TSL2X7X_CNTRL), reg_val); - if (ret < 0) - dev_err(&chip->client->dev, - "%s: failed in tsl2x7x_IOCTL_INT_SET.\n", - __func__); - - /* Clear out any initial interrupts */ - ret = i2c_smbus_write_byte(chip->client, - TSL2X7X_CMD_REG | - TSL2X7X_CMD_SPL_FN | - TSL2X7X_CMD_PROXALS_INT_CLR); - if (ret < 0) { - dev_err(&chip->client->dev, - "%s: Failed to clear Int status\n", - __func__); - return ret; - } - } - - return ret; -} - -static int tsl2x7x_chip_off(struct iio_dev *indio_dev) -{ - int ret; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - /* turn device off */ - chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; - - ret = i2c_smbus_write_byte_data(chip->client, - TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00); - - if (chip->pdata && chip->pdata->power_off) - chip->pdata->power_off(chip->client); - - return ret; -} - -/** - * tsl2x7x_invoke_change - * @indio_dev: pointer to IIO device - * - * Obtain and lock both ALS and PROX resources, - * determine and save device state (On/Off), - * cycle device to implement updated parameter, - * put device back into proper state, and unlock - * resource. - */ -static -int tsl2x7x_invoke_change(struct iio_dev *indio_dev) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - int device_status = chip->tsl2x7x_chip_status; - - mutex_lock(&chip->als_mutex); - mutex_lock(&chip->prox_mutex); - - if (device_status == TSL2X7X_CHIP_WORKING) - tsl2x7x_chip_off(indio_dev); - - tsl2x7x_chip_on(indio_dev); - - if (device_status != TSL2X7X_CHIP_WORKING) - tsl2x7x_chip_off(indio_dev); - - mutex_unlock(&chip->prox_mutex); - mutex_unlock(&chip->als_mutex); - - return 0; -} - -static -void tsl2x7x_prox_calculate(int *data, int length, - struct tsl2x7x_prox_stat *statP) -{ - int i; - int sample_sum; - int tmp; - - if (!length) - length = 1; - - sample_sum = 0; - statP->min = INT_MAX; - statP->max = INT_MIN; - for (i = 0; i < length; i++) { - sample_sum += data[i]; - statP->min = min(statP->min, data[i]); - statP->max = max(statP->max, data[i]); - } - - statP->mean = sample_sum / length; - sample_sum = 0; - for (i = 0; i < length; i++) { - tmp = data[i] - statP->mean; - sample_sum += tmp * tmp; - } - statP->stddev = int_sqrt((long)sample_sum / length); -} - -/** - * tsl2x7x_prox_cal() - Calculates std. and sets thresholds. - * @indio_dev: pointer to IIO device - * - * Calculates a standard deviation based on the samples, - * and sets the threshold accordingly. - */ -static void tsl2x7x_prox_cal(struct iio_dev *indio_dev) -{ - int prox_history[MAX_SAMPLES_CAL + 1]; - int i; - struct tsl2x7x_prox_stat prox_stat_data[2]; - struct tsl2x7x_prox_stat *calP; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - u8 tmp_irq_settings; - u8 current_state = chip->tsl2x7x_chip_status; - - if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) { - dev_err(&chip->client->dev, - "max prox samples cal is too big: %d\n", - chip->tsl2x7x_settings.prox_max_samples_cal); - chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL; - } - - /* have to stop to change settings */ - tsl2x7x_chip_off(indio_dev); - - /* Enable proximity detection save just in case prox not wanted yet*/ - tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en; - chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL; - - /*turn on device if not already on*/ - tsl2x7x_chip_on(indio_dev); - - /*gather the samples*/ - for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) { - mdelay(15); - tsl2x7x_get_prox(indio_dev); - prox_history[i] = chip->prox_data; - dev_info(&chip->client->dev, "2 i=%d prox data= %d\n", - i, chip->prox_data); - } - - tsl2x7x_chip_off(indio_dev); - calP = &prox_stat_data[PROX_STAT_CAL]; - tsl2x7x_prox_calculate(prox_history, - chip->tsl2x7x_settings.prox_max_samples_cal, - calP); - chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean; - - dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n", - calP->min, calP->mean, calP->max); - dev_info(&chip->client->dev, - "%s proximity threshold set to %d\n", - chip->client->name, chip->tsl2x7x_settings.prox_thres_high); - - /* back to the way they were */ - chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings; - if (current_state == TSL2X7X_CHIP_WORKING) - tsl2x7x_chip_on(indio_dev); -} - -static ssize_t tsl2x7x_power_state_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - - return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status); -} - -static ssize_t tsl2x7x_power_state_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - bool value; - - if (strtobool(buf, &value)) - return -EINVAL; - - if (value) - tsl2x7x_chip_on(indio_dev); - else - tsl2x7x_chip_off(indio_dev); - - return len; -} - -static ssize_t tsl2x7x_gain_available_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - - switch (chip->id) { - case tsl2571: - case tsl2671: - case tmd2671: - case tsl2771: - case tmd2771: - return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128"); - } - - return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120"); -} - -static ssize_t tsl2x7x_prox_gain_available_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8"); -} - -static ssize_t tsl2x7x_als_time_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - int y, z; - - y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; - z = y * TSL2X7X_MIN_ITIME; - y /= 1000; - z %= 1000; - - return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); -} - -static ssize_t tsl2x7x_als_time_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - struct tsl2x7x_parse_result result; - int ret; - - ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); - if (ret) - return ret; - - result.fract /= 3; - chip->tsl2x7x_settings.als_time = - TSL2X7X_MAX_TIMER_CNT - (u8)result.fract; - - dev_info(&chip->client->dev, "%s: als time = %d", - __func__, chip->tsl2x7x_settings.als_time); - - tsl2x7x_invoke_change(indio_dev); - - return IIO_VAL_INT_PLUS_MICRO; -} - -static IIO_CONST_ATTR(in_illuminance0_integration_time_available, - ".00272 - .696"); - -static ssize_t tsl2x7x_als_cal_target_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - - return snprintf(buf, PAGE_SIZE, "%d\n", - chip->tsl2x7x_settings.als_cal_target); -} - -static ssize_t tsl2x7x_als_cal_target_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - unsigned long value; - - if (kstrtoul(buf, 0, &value)) - return -EINVAL; - - if (value) - chip->tsl2x7x_settings.als_cal_target = value; - - tsl2x7x_invoke_change(indio_dev); - - return len; -} - -/* persistence settings */ -static ssize_t tsl2x7x_als_persistence_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - int y, z, filter_delay; - - /* Determine integration time */ - y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; - z = y * TSL2X7X_MIN_ITIME; - filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F); - y = filter_delay / 1000; - z = filter_delay % 1000; - - return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); -} - -static ssize_t tsl2x7x_als_persistence_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - struct tsl2x7x_parse_result result; - int y, z, filter_delay; - int ret; - - ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); - if (ret) - return ret; - - y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; - z = y * TSL2X7X_MIN_ITIME; - - filter_delay = - DIV_ROUND_UP((result.integer * 1000) + result.fract, z); - - chip->tsl2x7x_settings.persistence &= 0xF0; - chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F); - - dev_info(&chip->client->dev, "%s: als persistence = %d", - __func__, filter_delay); - - tsl2x7x_invoke_change(indio_dev); - - return IIO_VAL_INT_PLUS_MICRO; -} - -static ssize_t tsl2x7x_prox_persistence_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - int y, z, filter_delay; - - /* Determine integration time */ - y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1; - z = y * TSL2X7X_MIN_ITIME; - filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4); - y = filter_delay / 1000; - z = filter_delay % 1000; - - return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); -} - -static ssize_t tsl2x7x_prox_persistence_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - struct tsl2x7x_parse_result result; - int y, z, filter_delay; - int ret; - - ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); - if (ret) - return ret; - - y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1; - z = y * TSL2X7X_MIN_ITIME; - - filter_delay = - DIV_ROUND_UP((result.integer * 1000) + result.fract, z); - - chip->tsl2x7x_settings.persistence &= 0x0F; - chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0); - - dev_info(&chip->client->dev, "%s: prox persistence = %d", - __func__, filter_delay); - - tsl2x7x_invoke_change(indio_dev); - - return IIO_VAL_INT_PLUS_MICRO; -} - -static ssize_t tsl2x7x_do_calibrate(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - bool value; - - if (strtobool(buf, &value)) - return -EINVAL; - - if (value) - tsl2x7x_als_calibrate(indio_dev); - - tsl2x7x_invoke_change(indio_dev); - - return len; -} - -static ssize_t tsl2x7x_luxtable_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); - int i = 0; - int offset = 0; - - while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) { - offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,%u,", - chip->tsl2x7x_device_lux[i].ratio, - chip->tsl2x7x_device_lux[i].ch0, - chip->tsl2x7x_device_lux[i].ch1); - if (chip->tsl2x7x_device_lux[i].ratio == 0) { - /* - * We just printed the first "0" entry. - * Now get rid of the extra "," and break. - */ - offset--; - break; - } - i++; - } - - offset += snprintf(buf + offset, PAGE_SIZE, "\n"); - return offset; -} - -static ssize_t tsl2x7x_luxtable_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - int value[ARRAY_SIZE(chip->tsl2x7x_device_lux) * 3 + 1]; - int n; - - get_options(buf, ARRAY_SIZE(value), value); - - /* We now have an array of ints starting at value[1], and - * enumerated by value[0]. - * We expect each group of three ints is one table entry, - * and the last table entry is all 0. - */ - n = value[0]; - if ((n % 3) || n < 6 || - n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) { - dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n); - return -EINVAL; - } - - if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) { - dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n); - return -EINVAL; - } - - if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) - tsl2x7x_chip_off(indio_dev); - - /* Zero out the table */ - memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux)); - memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4)); - - tsl2x7x_invoke_change(indio_dev); - - return len; -} - -static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - bool value; - - if (strtobool(buf, &value)) - return -EINVAL; - - if (value) - tsl2x7x_prox_cal(indio_dev); - - tsl2x7x_invoke_change(indio_dev); - - return len; -} - -static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, - enum iio_event_type type, - enum iio_event_direction dir) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - int ret; - - if (chan->type == IIO_INTENSITY) - ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10); - else - ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20); - - return ret; -} - -static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, - enum iio_event_type type, - enum iio_event_direction dir, - int val) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - if (chan->type == IIO_INTENSITY) { - if (val) - chip->tsl2x7x_settings.interrupts_en |= 0x10; - else - chip->tsl2x7x_settings.interrupts_en &= 0x20; - } else { - if (val) - chip->tsl2x7x_settings.interrupts_en |= 0x20; - else - chip->tsl2x7x_settings.interrupts_en &= 0x10; - } - - tsl2x7x_invoke_change(indio_dev); - - return 0; -} - -static int tsl2x7x_write_thresh(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, - enum iio_event_type type, - enum iio_event_direction dir, - enum iio_event_info info, - int val, int val2) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - if (chan->type == IIO_INTENSITY) { - switch (dir) { - case IIO_EV_DIR_RISING: - chip->tsl2x7x_settings.als_thresh_high = val; - break; - case IIO_EV_DIR_FALLING: - chip->tsl2x7x_settings.als_thresh_low = val; - break; - default: - return -EINVAL; - } - } else { - switch (dir) { - case IIO_EV_DIR_RISING: - chip->tsl2x7x_settings.prox_thres_high = val; - break; - case IIO_EV_DIR_FALLING: - chip->tsl2x7x_settings.prox_thres_low = val; - break; - default: - return -EINVAL; - } - } - - tsl2x7x_invoke_change(indio_dev); - - return 0; -} - -static int tsl2x7x_read_thresh(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, - enum iio_event_type type, - enum iio_event_direction dir, - enum iio_event_info info, - int *val, int *val2) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - if (chan->type == IIO_INTENSITY) { - switch (dir) { - case IIO_EV_DIR_RISING: - *val = chip->tsl2x7x_settings.als_thresh_high; - break; - case IIO_EV_DIR_FALLING: - *val = chip->tsl2x7x_settings.als_thresh_low; - break; - default: - return -EINVAL; - } - } else { - switch (dir) { - case IIO_EV_DIR_RISING: - *val = chip->tsl2x7x_settings.prox_thres_high; - break; - case IIO_EV_DIR_FALLING: - *val = chip->tsl2x7x_settings.prox_thres_low; - break; - default: - return -EINVAL; - } - } - - return IIO_VAL_INT; -} - -static int tsl2x7x_read_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int *val, - int *val2, - long mask) -{ - int ret = -EINVAL; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - switch (mask) { - case IIO_CHAN_INFO_PROCESSED: - switch (chan->type) { - case IIO_LIGHT: - tsl2x7x_get_lux(indio_dev); - *val = chip->als_cur_info.lux; - ret = IIO_VAL_INT; - break; - default: - return -EINVAL; - } - break; - case IIO_CHAN_INFO_RAW: - switch (chan->type) { - case IIO_INTENSITY: - tsl2x7x_get_lux(indio_dev); - if (chan->channel == 0) - *val = chip->als_cur_info.als_ch0; - else - *val = chip->als_cur_info.als_ch1; - ret = IIO_VAL_INT; - break; - case IIO_PROXIMITY: - tsl2x7x_get_prox(indio_dev); - *val = chip->prox_data; - ret = IIO_VAL_INT; - break; - default: - return -EINVAL; - } - break; - case IIO_CHAN_INFO_CALIBSCALE: - if (chan->type == IIO_LIGHT) - *val = - tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]; - else - *val = - tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain]; - ret = IIO_VAL_INT; - break; - case IIO_CHAN_INFO_CALIBBIAS: - *val = chip->tsl2x7x_settings.als_gain_trim; - ret = IIO_VAL_INT; - break; - - default: - ret = -EINVAL; - } - - return ret; -} - -static int tsl2x7x_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int val, - int val2, - long mask) -{ - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - - switch (mask) { - case IIO_CHAN_INFO_CALIBSCALE: - if (chan->type == IIO_INTENSITY) { - switch (val) { - case 1: - chip->tsl2x7x_settings.als_gain = 0; - break; - case 8: - chip->tsl2x7x_settings.als_gain = 1; - break; - case 16: - chip->tsl2x7x_settings.als_gain = 2; - break; - case 120: - switch (chip->id) { - case tsl2572: - case tsl2672: - case tmd2672: - case tsl2772: - case tmd2772: - return -EINVAL; - } - chip->tsl2x7x_settings.als_gain = 3; - break; - case 128: - switch (chip->id) { - case tsl2571: - case tsl2671: - case tmd2671: - case tsl2771: - case tmd2771: - return -EINVAL; - } - chip->tsl2x7x_settings.als_gain = 3; - break; - default: - return -EINVAL; - } - } else { - switch (val) { - case 1: - chip->tsl2x7x_settings.prox_gain = 0; - break; - case 2: - chip->tsl2x7x_settings.prox_gain = 1; - break; - case 4: - chip->tsl2x7x_settings.prox_gain = 2; - break; - case 8: - chip->tsl2x7x_settings.prox_gain = 3; - break; - default: - return -EINVAL; - } - } - break; - case IIO_CHAN_INFO_CALIBBIAS: - chip->tsl2x7x_settings.als_gain_trim = val; - break; - - default: - return -EINVAL; - } - - tsl2x7x_invoke_change(indio_dev); - - return 0; -} - -static DEVICE_ATTR(power_state, 0644, - tsl2x7x_power_state_show, tsl2x7x_power_state_store); - -static DEVICE_ATTR(in_proximity0_calibscale_available, 0444, - tsl2x7x_prox_gain_available_show, NULL); - -static DEVICE_ATTR(in_illuminance0_calibscale_available, 0444, - tsl2x7x_gain_available_show, NULL); - -static DEVICE_ATTR(in_illuminance0_integration_time, 0644, - tsl2x7x_als_time_show, tsl2x7x_als_time_store); - -static DEVICE_ATTR(in_illuminance0_target_input, 0644, - tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store); - -static DEVICE_ATTR(in_illuminance0_calibrate, 0200, NULL, - tsl2x7x_do_calibrate); - -static DEVICE_ATTR(in_proximity0_calibrate, 0200, NULL, - tsl2x7x_do_prox_calibrate); - -static DEVICE_ATTR(in_illuminance0_lux_table, 0644, - tsl2x7x_luxtable_show, tsl2x7x_luxtable_store); - -static DEVICE_ATTR(in_intensity0_thresh_period, 0644, - tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store); - -static DEVICE_ATTR(in_proximity0_thresh_period, 0644, - tsl2x7x_prox_persistence_show, tsl2x7x_prox_persistence_store); - -/* Use the default register values to identify the Taos device */ -static int tsl2x7x_device_id(unsigned char *id, int target) -{ - switch (target) { - case tsl2571: - case tsl2671: - case tsl2771: - return (*id & 0xf0) == TRITON_ID; - case tmd2671: - case tmd2771: - return (*id & 0xf0) == HALIBUT_ID; - case tsl2572: - case tsl2672: - case tmd2672: - case tsl2772: - case tmd2772: - return (*id & 0xf0) == SWORDFISH_ID; - } - - return -EINVAL; -} - -static irqreturn_t tsl2x7x_event_handler(int irq, void *private) -{ - struct iio_dev *indio_dev = private; - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - s64 timestamp = iio_get_time_ns(indio_dev); - int ret; - u8 value; - - value = i2c_smbus_read_byte_data(chip->client, - TSL2X7X_CMD_REG | TSL2X7X_STATUS); - - /* What type of interrupt do we need to process */ - if (value & TSL2X7X_STA_PRX_INTR) { - tsl2x7x_get_prox(indio_dev); /* freshen data for ABI */ - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, - 0, - IIO_EV_TYPE_THRESH, - IIO_EV_DIR_EITHER), - timestamp); - } - - if (value & TSL2X7X_STA_ALS_INTR) { - tsl2x7x_get_lux(indio_dev); /* freshen data for ABI */ - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE(IIO_LIGHT, - 0, - IIO_EV_TYPE_THRESH, - IIO_EV_DIR_EITHER), - timestamp); - } - /* Clear interrupt now that we have handled it. */ - ret = i2c_smbus_write_byte(chip->client, - TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN | - TSL2X7X_CMD_PROXALS_INT_CLR); - if (ret < 0) - dev_err(&chip->client->dev, - "Failed to clear irq from event handler. err = %d\n", - ret); - - return IRQ_HANDLED; -} - -static struct attribute *tsl2x7x_ALS_device_attrs[] = { - &dev_attr_power_state.attr, - &dev_attr_in_illuminance0_calibscale_available.attr, - &dev_attr_in_illuminance0_integration_time.attr, - &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr, - &dev_attr_in_illuminance0_target_input.attr, - &dev_attr_in_illuminance0_calibrate.attr, - &dev_attr_in_illuminance0_lux_table.attr, - NULL -}; - -static struct attribute *tsl2x7x_PRX_device_attrs[] = { - &dev_attr_power_state.attr, - &dev_attr_in_proximity0_calibrate.attr, - NULL -}; - -static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = { - &dev_attr_power_state.attr, - &dev_attr_in_illuminance0_calibscale_available.attr, - &dev_attr_in_illuminance0_integration_time.attr, - &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr, - &dev_attr_in_illuminance0_target_input.attr, - &dev_attr_in_illuminance0_calibrate.attr, - &dev_attr_in_illuminance0_lux_table.attr, - &dev_attr_in_proximity0_calibrate.attr, - NULL -}; - -static struct attribute *tsl2x7x_PRX2_device_attrs[] = { - &dev_attr_power_state.attr, - &dev_attr_in_proximity0_calibrate.attr, - &dev_attr_in_proximity0_calibscale_available.attr, - NULL -}; - -static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = { - &dev_attr_power_state.attr, - &dev_attr_in_illuminance0_calibscale_available.attr, - &dev_attr_in_illuminance0_integration_time.attr, - &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr, - &dev_attr_in_illuminance0_target_input.attr, - &dev_attr_in_illuminance0_calibrate.attr, - &dev_attr_in_illuminance0_lux_table.attr, - &dev_attr_in_proximity0_calibrate.attr, - &dev_attr_in_proximity0_calibscale_available.attr, - NULL -}; - -static struct attribute *tsl2X7X_ALS_event_attrs[] = { - &dev_attr_in_intensity0_thresh_period.attr, - NULL, -}; - -static struct attribute *tsl2X7X_PRX_event_attrs[] = { - &dev_attr_in_proximity0_thresh_period.attr, - NULL, -}; - -static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = { - &dev_attr_in_intensity0_thresh_period.attr, - &dev_attr_in_proximity0_thresh_period.attr, - NULL, -}; - -static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = { - [ALS] = { - .attrs = tsl2x7x_ALS_device_attrs, - }, - [PRX] = { - .attrs = tsl2x7x_PRX_device_attrs, - }, - [ALSPRX] = { - .attrs = tsl2x7x_ALSPRX_device_attrs, - }, - [PRX2] = { - .attrs = tsl2x7x_PRX2_device_attrs, - }, - [ALSPRX2] = { - .attrs = tsl2x7x_ALSPRX2_device_attrs, - }, -}; - -static const struct attribute_group tsl2X7X_event_attr_group_tbl[] = { - [ALS] = { - .attrs = tsl2X7X_ALS_event_attrs, - .name = "events", - }, - [PRX] = { - .attrs = tsl2X7X_PRX_event_attrs, - .name = "events", - }, - [ALSPRX] = { - .attrs = tsl2X7X_ALSPRX_event_attrs, - .name = "events", - }, -}; - -static const struct iio_info tsl2X7X_device_info[] = { - [ALS] = { - .attrs = &tsl2X7X_device_attr_group_tbl[ALS], - .event_attrs = &tsl2X7X_event_attr_group_tbl[ALS], - .driver_module = THIS_MODULE, - .read_raw = &tsl2x7x_read_raw, - .write_raw = &tsl2x7x_write_raw, - .read_event_value = &tsl2x7x_read_thresh, - .write_event_value = &tsl2x7x_write_thresh, - .read_event_config = &tsl2x7x_read_interrupt_config, - .write_event_config = &tsl2x7x_write_interrupt_config, - }, - [PRX] = { - .attrs = &tsl2X7X_device_attr_group_tbl[PRX], - .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX], - .driver_module = THIS_MODULE, - .read_raw = &tsl2x7x_read_raw, - .write_raw = &tsl2x7x_write_raw, - .read_event_value = &tsl2x7x_read_thresh, - .write_event_value = &tsl2x7x_write_thresh, - .read_event_config = &tsl2x7x_read_interrupt_config, - .write_event_config = &tsl2x7x_write_interrupt_config, - }, - [ALSPRX] = { - .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX], - .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX], - .driver_module = THIS_MODULE, - .read_raw = &tsl2x7x_read_raw, - .write_raw = &tsl2x7x_write_raw, - .read_event_value = &tsl2x7x_read_thresh, - .write_event_value = &tsl2x7x_write_thresh, - .read_event_config = &tsl2x7x_read_interrupt_config, - .write_event_config = &tsl2x7x_write_interrupt_config, - }, - [PRX2] = { - .attrs = &tsl2X7X_device_attr_group_tbl[PRX2], - .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX], - .driver_module = THIS_MODULE, - .read_raw = &tsl2x7x_read_raw, - .write_raw = &tsl2x7x_write_raw, - .read_event_value = &tsl2x7x_read_thresh, - .write_event_value = &tsl2x7x_write_thresh, - .read_event_config = &tsl2x7x_read_interrupt_config, - .write_event_config = &tsl2x7x_write_interrupt_config, - }, - [ALSPRX2] = { - .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2], - .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX], - .driver_module = THIS_MODULE, - .read_raw = &tsl2x7x_read_raw, - .write_raw = &tsl2x7x_write_raw, - .read_event_value = &tsl2x7x_read_thresh, - .write_event_value = &tsl2x7x_write_thresh, - .read_event_config = &tsl2x7x_read_interrupt_config, - .write_event_config = &tsl2x7x_write_interrupt_config, - }, -}; - -static const struct iio_event_spec tsl2x7x_events[] = { - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_RISING, - .mask_separate = BIT(IIO_EV_INFO_VALUE) | - BIT(IIO_EV_INFO_ENABLE), - }, { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_FALLING, - .mask_separate = BIT(IIO_EV_INFO_VALUE) | - BIT(IIO_EV_INFO_ENABLE), - }, -}; - -static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = { - [ALS] = { - .channel = { - { - .type = IIO_LIGHT, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), - }, { - .type = IIO_INTENSITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE) | - BIT(IIO_CHAN_INFO_CALIBBIAS), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, { - .type = IIO_INTENSITY, - .indexed = 1, - .channel = 1, - }, - }, - .chan_table_elements = 3, - .info = &tsl2X7X_device_info[ALS], - }, - [PRX] = { - .channel = { - { - .type = IIO_PROXIMITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, - }, - .chan_table_elements = 1, - .info = &tsl2X7X_device_info[PRX], - }, - [ALSPRX] = { - .channel = { - { - .type = IIO_LIGHT, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) - }, { - .type = IIO_INTENSITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE) | - BIT(IIO_CHAN_INFO_CALIBBIAS), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, { - .type = IIO_INTENSITY, - .indexed = 1, - .channel = 1, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - }, { - .type = IIO_PROXIMITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, - }, - .chan_table_elements = 4, - .info = &tsl2X7X_device_info[ALSPRX], - }, - [PRX2] = { - .channel = { - { - .type = IIO_PROXIMITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, - }, - .chan_table_elements = 1, - .info = &tsl2X7X_device_info[PRX2], - }, - [ALSPRX2] = { - .channel = { - { - .type = IIO_LIGHT, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), - }, { - .type = IIO_INTENSITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE) | - BIT(IIO_CHAN_INFO_CALIBBIAS), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, { - .type = IIO_INTENSITY, - .indexed = 1, - .channel = 1, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - }, { - .type = IIO_PROXIMITY, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE), - .event_spec = tsl2x7x_events, - .num_event_specs = ARRAY_SIZE(tsl2x7x_events), - }, - }, - .chan_table_elements = 4, - .info = &tsl2X7X_device_info[ALSPRX2], - }, -}; - -static int tsl2x7x_probe(struct i2c_client *clientp, - const struct i2c_device_id *id) -{ - int ret; - unsigned char device_id; - struct iio_dev *indio_dev; - struct tsl2X7X_chip *chip; - - indio_dev = devm_iio_device_alloc(&clientp->dev, sizeof(*chip)); - if (!indio_dev) - return -ENOMEM; - - chip = iio_priv(indio_dev); - chip->client = clientp; - i2c_set_clientdata(clientp, indio_dev); - - ret = tsl2x7x_i2c_read(chip->client, - TSL2X7X_CHIPID, &device_id); - if (ret < 0) - return ret; - - if ((!tsl2x7x_device_id(&device_id, id->driver_data)) || - (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) { - dev_info(&chip->client->dev, - "%s: i2c device found does not match expected id\n", - __func__); - return -EINVAL; - } - - ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); - if (ret < 0) { - dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n", - ret); - return ret; - } - - /* - * ALS and PROX functions can be invoked via user space poll - * or H/W interrupt. If busy return last sample. - */ - mutex_init(&chip->als_mutex); - mutex_init(&chip->prox_mutex); - - chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN; - chip->pdata = dev_get_platdata(&clientp->dev); - chip->id = id->driver_data; - chip->chip_info = - &tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]]; - - indio_dev->info = chip->chip_info->info; - indio_dev->dev.parent = &clientp->dev; - indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->name = chip->client->name; - indio_dev->channels = chip->chip_info->channel; - indio_dev->num_channels = chip->chip_info->chan_table_elements; - - if (clientp->irq) { - ret = devm_request_threaded_irq(&clientp->dev, clientp->irq, - NULL, - &tsl2x7x_event_handler, - IRQF_TRIGGER_RISING | - IRQF_ONESHOT, - "TSL2X7X_event", - indio_dev); - if (ret) { - dev_err(&clientp->dev, - "%s: irq request failed", __func__); - return ret; - } - } - - /* Load up the defaults */ - tsl2x7x_defaults(chip); - /* Make sure the chip is on */ - tsl2x7x_chip_on(indio_dev); - - ret = iio_device_register(indio_dev); - if (ret) { - dev_err(&clientp->dev, - "%s: iio registration failed\n", __func__); - return ret; - } - - dev_info(&clientp->dev, "%s Light sensor found.\n", id->name); - - return 0; -} - -static int tsl2x7x_suspend(struct device *dev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - int ret = 0; - - if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { - ret = tsl2x7x_chip_off(indio_dev); - chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; - } - - if (chip->pdata && chip->pdata->platform_power) { - pm_message_t pmm = {PM_EVENT_SUSPEND}; - - chip->pdata->platform_power(dev, pmm); - } - - return ret; -} - -static int tsl2x7x_resume(struct device *dev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct tsl2X7X_chip *chip = iio_priv(indio_dev); - int ret = 0; - - if (chip->pdata && chip->pdata->platform_power) { - pm_message_t pmm = {PM_EVENT_RESUME}; - - chip->pdata->platform_power(dev, pmm); - } - - if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED) - ret = tsl2x7x_chip_on(indio_dev); - - return ret; -} - -static int tsl2x7x_remove(struct i2c_client *client) -{ - struct iio_dev *indio_dev = i2c_get_clientdata(client); - - tsl2x7x_chip_off(indio_dev); - - iio_device_unregister(indio_dev); - - return 0; -} - -static struct i2c_device_id tsl2x7x_idtable[] = { - { "tsl2571", tsl2571 }, - { "tsl2671", tsl2671 }, - { "tmd2671", tmd2671 }, - { "tsl2771", tsl2771 }, - { "tmd2771", tmd2771 }, - { "tsl2572", tsl2572 }, - { "tsl2672", tsl2672 }, - { "tmd2672", tmd2672 }, - { "tsl2772", tsl2772 }, - { "tmd2772", tmd2772 }, - {} -}; - -MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable); - -static const struct dev_pm_ops tsl2x7x_pm_ops = { - .suspend = tsl2x7x_suspend, - .resume = tsl2x7x_resume, -}; - -/* Driver definition */ -static struct i2c_driver tsl2x7x_driver = { - .driver = { - .name = "tsl2x7x", - .pm = &tsl2x7x_pm_ops, - }, - .id_table = tsl2x7x_idtable, - .probe = tsl2x7x_probe, - .remove = tsl2x7x_remove, -}; - -module_i2c_driver(tsl2x7x_driver); - -MODULE_AUTHOR("J. August Brenner"); -MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver"); -MODULE_LICENSE("GPL");