diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-17 16:47:17 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-17 16:47:17 -0800 |
commit | 296455ade1fdcf5f8f8c033201633b60946c589a (patch) | |
tree | 6058ed978b2787009b1c25c2c0ad5326e2e77130 /drivers/iio/light | |
parent | e1aa9df440186af73a9e690244eb49cbc99f36ac (diff) | |
parent | 5850edccec30325707f953bc088497b3b9041231 (diff) | |
download | linux-296455ade1fdcf5f8f8c033201633b60946c589a.tar.gz linux-296455ade1fdcf5f8f8c033201633b60946c589a.tar.bz2 linux-296455ade1fdcf5f8f8c033201633b60946c589a.zip |
Merge tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc and other driver updates from Greg KH:
"Here is the big set of char/misc and other driver subsystem changes
for 6.8-rc1.
Other than lots of binder driver changes (as you can see by the merge
conflicts) included in here are:
- lots of iio driver updates and additions
- spmi driver updates
- eeprom driver updates
- firmware driver updates
- ocxl driver updates
- mhi driver updates
- w1 driver updates
- nvmem driver updates
- coresight driver updates
- platform driver remove callback api changes
- tags.sh script updates
- bus_type constant marking cleanups
- lots of other small driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (341 commits)
android: removed duplicate linux/errno
uio: Fix use-after-free in uio_open
drivers: soc: xilinx: add check for platform
firmware: xilinx: Export function to use in other module
scripts/tags.sh: remove find_sources
scripts/tags.sh: use -n to test archinclude
scripts/tags.sh: add local annotation
scripts/tags.sh: use more portable -path instead of -wholename
scripts/tags.sh: Update comment (addition of gtags)
firmware: zynqmp: Convert to platform remove callback returning void
firmware: turris-mox-rwtm: Convert to platform remove callback returning void
firmware: stratix10-svc: Convert to platform remove callback returning void
firmware: stratix10-rsu: Convert to platform remove callback returning void
firmware: raspberrypi: Convert to platform remove callback returning void
firmware: qemu_fw_cfg: Convert to platform remove callback returning void
firmware: mtk-adsp-ipc: Convert to platform remove callback returning void
firmware: imx-dsp: Convert to platform remove callback returning void
firmware: coreboot_table: Convert to platform remove callback returning void
firmware: arm_scpi: Convert to platform remove callback returning void
firmware: arm_scmi: Convert to platform remove callback returning void
...
Diffstat (limited to 'drivers/iio/light')
-rw-r--r-- | drivers/iio/light/Kconfig | 37 | ||||
-rw-r--r-- | drivers/iio/light/Makefile | 3 | ||||
-rw-r--r-- | drivers/iio/light/isl76682.c | 345 | ||||
-rw-r--r-- | drivers/iio/light/ltr390.c | 196 | ||||
-rw-r--r-- | drivers/iio/light/ltrf216a.c | 10 | ||||
-rw-r--r-- | drivers/iio/light/pa12203001.c | 2 | ||||
-rw-r--r-- | drivers/iio/light/rohm-bu27008.c | 201 | ||||
-rw-r--r-- | drivers/iio/light/veml6075.c | 474 |
8 files changed, 1257 insertions, 11 deletions
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 45edba797e4c..143003232d1c 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -252,6 +252,21 @@ config ISL29125 To compile this driver as a module, choose M here: the module will be called isl29125. +config ISL76682 + tristate "Intersil ISL76682 Light Sensor" + depends on I2C + select REGMAP_I2C + help + Say Y here if you want to build a driver for the Intersil ISL76682 + Ambient Light Sensor and IR Intensity sensor. This driver provides + the readouts via standard IIO sysfs and device interface. Both ALS + illuminance and IR illuminance are provided raw with separate scale + setting which can be configured via sysfs, the default scale is 1000 + lux, other options are 4000/16000/64000 lux. + + To compile this driver as a module, choose M here: the module will be + called isl76682. + config HID_SENSOR_ALS depends on HID_SENSOR_HUB select IIO_BUFFER @@ -347,6 +362,17 @@ config SENSORS_LM3533 changes. The ALS-control output values can be set per zone for the three current output channels. +config LTR390 + tristate "LTR-390UV-01 ambient light and UV sensor" + depends on I2C + select REGMAP_I2C + help + If you say yes here you get support for the Lite-On LTR-390UV-01 + ambient light and UV sensor. + + This driver can also be built as a module. If so, the module + will be called ltr390. + config LTR501 tristate "LTR-501ALS-01 light sensor" depends on I2C @@ -637,6 +663,17 @@ config VEML6070 To compile this driver as a module, choose M here: the module will be called veml6070. +config VEML6075 + tristate "VEML6075 UVA and UVB light sensor" + select REGMAP_I2C + depends on I2C + help + Say Y here if you want to build a driver for the Vishay VEML6075 UVA + and UVB light sensor. + + To compile this driver as a module, choose M here: the + module will be called veml6075. + config VL6180 tristate "VL6180 ALS, range and proximity sensor" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index c0db4c4c36ec..2e5fdb33e0e9 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -28,8 +28,10 @@ obj-$(CONFIG_IQS621_ALS) += iqs621-als.o obj-$(CONFIG_SENSORS_ISL29018) += isl29018.o obj-$(CONFIG_SENSORS_ISL29028) += isl29028.o obj-$(CONFIG_ISL29125) += isl29125.o +obj-$(CONFIG_ISL76682) += isl76682.o obj-$(CONFIG_JSA1212) += jsa1212.o obj-$(CONFIG_SENSORS_LM3533) += lm3533-als.o +obj-$(CONFIG_LTR390) += ltr390.o obj-$(CONFIG_LTR501) += ltr501.o obj-$(CONFIG_LTRF216A) += ltrf216a.o obj-$(CONFIG_LV0104CS) += lv0104cs.o @@ -60,5 +62,6 @@ obj-$(CONFIG_VCNL4000) += vcnl4000.o obj-$(CONFIG_VCNL4035) += vcnl4035.o obj-$(CONFIG_VEML6030) += veml6030.o obj-$(CONFIG_VEML6070) += veml6070.o +obj-$(CONFIG_VEML6075) += veml6075.o obj-$(CONFIG_VL6180) += vl6180.o obj-$(CONFIG_ZOPT2201) += zopt2201.o diff --git a/drivers/iio/light/isl76682.c b/drivers/iio/light/isl76682.c new file mode 100644 index 000000000000..cf6ddee44ffc --- /dev/null +++ b/drivers/iio/light/isl76682.c @@ -0,0 +1,345 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * IIO driver for the light sensor ISL76682. + * ISL76682 is Ambient Light Sensor + * + * Copyright (c) 2023 Marek Vasut <marex@denx.de> + */ + +#include <linux/array_size.h> +#include <linux/bits.h> +#include <linux/cleanup.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/regmap.h> +#include <linux/types.h> + +#include <linux/iio/iio.h> + +#define ISL76682_REG_COMMAND 0x00 + +#define ISL76682_COMMAND_EN BIT(7) +#define ISL76682_COMMAND_MODE_CONTINUOUS BIT(6) +#define ISL76682_COMMAND_LIGHT_IR BIT(5) + +#define ISL76682_COMMAND_RANGE_LUX_1K 0x0 +#define ISL76682_COMMAND_RANGE_LUX_4K 0x1 +#define ISL76682_COMMAND_RANGE_LUX_16K 0x2 +#define ISL76682_COMMAND_RANGE_LUX_64K 0x3 +#define ISL76682_COMMAND_RANGE_LUX_MASK GENMASK(1, 0) + +#define ISL76682_REG_ALSIR_L 0x01 + +#define ISL76682_REG_ALSIR_U 0x02 + +#define ISL76682_NUM_REGS (ISL76682_REG_ALSIR_U + 1) + +#define ISL76682_CONV_TIME_MS 100 +#define ISL76682_INT_TIME_US 90000 + +#define ISL76682_ADC_MAX (BIT(16) - 1) + +struct isl76682_chip { + /* + * Lock to synchronize access to device command register + * and the content of range variable below. + */ + struct mutex lock; + struct regmap *regmap; + u8 range; + u8 command; +}; + +struct isl76682_range { + u8 range; + u32 als; + u32 ir; +}; + +static struct isl76682_range isl76682_range_table[] = { + { ISL76682_COMMAND_RANGE_LUX_1K, 15000, 10500 }, + { ISL76682_COMMAND_RANGE_LUX_4K, 60000, 42000 }, + { ISL76682_COMMAND_RANGE_LUX_16K, 240000, 168000 }, + { ISL76682_COMMAND_RANGE_LUX_64K, 960000, 673000 } +}; + +static int isl76682_get(struct isl76682_chip *chip, bool mode_ir, int *data) +{ + u8 command; + int ret; + + command = ISL76682_COMMAND_EN | ISL76682_COMMAND_MODE_CONTINUOUS | + chip->range; + + if (mode_ir) + command |= ISL76682_COMMAND_LIGHT_IR; + + if (command != chip->command) { + ret = regmap_write(chip->regmap, ISL76682_REG_COMMAND, command); + if (ret) + return ret; + + /* Need to wait for conversion time if ALS/IR mode enabled */ + msleep(ISL76682_CONV_TIME_MS); + + chip->command = command; + } + + ret = regmap_bulk_read(chip->regmap, ISL76682_REG_ALSIR_L, data, 2); + *data &= ISL76682_ADC_MAX; + return ret; +} + +static int isl76682_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct isl76682_chip *chip = iio_priv(indio_dev); + int i; + + if (mask != IIO_CHAN_INFO_SCALE) + return -EINVAL; + + if (val != 0) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(isl76682_range_table); i++) { + if (chan->type == IIO_LIGHT && val2 != isl76682_range_table[i].als) + continue; + if (chan->type == IIO_INTENSITY && val2 != isl76682_range_table[i].ir) + continue; + + scoped_guard(mutex, &chip->lock) + chip->range = isl76682_range_table[i].range; + return 0; + } + + return -EINVAL; +} + +static int isl76682_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct isl76682_chip *chip = iio_priv(indio_dev); + int ret; + int i; + + guard(mutex)(&chip->lock); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + switch (chan->type) { + case IIO_LIGHT: + ret = isl76682_get(chip, false, val); + return (ret < 0) ? ret : IIO_VAL_INT; + case IIO_INTENSITY: + ret = isl76682_get(chip, true, val); + return (ret < 0) ? ret : IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SCALE: + for (i = 0; i < ARRAY_SIZE(isl76682_range_table); i++) { + if (chip->range != isl76682_range_table[i].range) + continue; + + *val = 0; + switch (chan->type) { + case IIO_LIGHT: + *val2 = isl76682_range_table[i].als; + return IIO_VAL_INT_PLUS_MICRO; + case IIO_INTENSITY: + *val2 = isl76682_range_table[i].ir; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } + } + return -EINVAL; + case IIO_CHAN_INFO_INT_TIME: + *val = 0; + *val2 = ISL76682_INT_TIME_US; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } +} + +static int illuminance_scale_available[] = { + 0, 15000, + 0, 60000, + 0, 240000, + 0, 960000, +}; + +static int intensity_scale_available[] = { + 0, 10500, + 0, 42000, + 0, 168000, + 0, 673000, +}; + +static int isl76682_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, + int *length, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_SCALE: + switch (chan->type) { + case IIO_LIGHT: + *vals = illuminance_scale_available; + *length = ARRAY_SIZE(illuminance_scale_available); + *type = IIO_VAL_INT_PLUS_MICRO; + return IIO_AVAIL_LIST; + case IIO_INTENSITY: + *vals = intensity_scale_available; + *length = ARRAY_SIZE(intensity_scale_available); + *type = IIO_VAL_INT_PLUS_MICRO; + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } + default: + return -EINVAL; + } +} + +static const struct iio_chan_spec isl76682_channels[] = { + { + .type = IIO_LIGHT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME), + }, { + .type = IIO_INTENSITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME), + } +}; + +static const struct iio_info isl76682_info = { + .read_avail = isl76682_read_avail, + .read_raw = isl76682_read_raw, + .write_raw = isl76682_write_raw, +}; + +static int isl76682_clear_configure_reg(struct isl76682_chip *chip) +{ + struct device *dev = regmap_get_device(chip->regmap); + int ret; + + ret = regmap_write(chip->regmap, ISL76682_REG_COMMAND, 0x0); + if (ret < 0) + dev_err(dev, "Error %d clearing the CONFIGURE register\n", ret); + + /* + * In the success case, the command register was zeroed out. + * + * In the error case, we do not know in which state the command + * register is, so we assume it is zeroed out, so that it would + * be reprogrammed at the next data read out, and at that time + * we hope it would be reprogrammed successfully. That is very + * much a best effort approach. + */ + chip->command = 0; + + return ret; +} + +static void isl76682_reset_action(void *chip) +{ + isl76682_clear_configure_reg(chip); +} + +static bool isl76682_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ISL76682_REG_ALSIR_L: + case ISL76682_REG_ALSIR_U: + return true; + default: + return false; + } +} + +static const struct regmap_config isl76682_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_reg = isl76682_is_volatile_reg, + .max_register = ISL76682_NUM_REGS - 1, + .num_reg_defaults_raw = ISL76682_NUM_REGS, + .cache_type = REGCACHE_FLAT, +}; + +static int isl76682_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct isl76682_chip *chip; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip)); + if (!indio_dev) + return -ENOMEM; + + chip = iio_priv(indio_dev); + + mutex_init(&chip->lock); + + chip->regmap = devm_regmap_init_i2c(client, &isl76682_regmap_config); + ret = PTR_ERR_OR_ZERO(chip->regmap); + if (ret) + return dev_err_probe(dev, ret, "Error initializing regmap\n"); + + chip->range = ISL76682_COMMAND_RANGE_LUX_1K; + + ret = isl76682_clear_configure_reg(chip); + if (ret < 0) + return ret; + + ret = devm_add_action_or_reset(dev, isl76682_reset_action, chip); + if (ret) + return ret; + + indio_dev->info = &isl76682_info; + indio_dev->channels = isl76682_channels; + indio_dev->num_channels = ARRAY_SIZE(isl76682_channels); + indio_dev->name = "isl76682"; + indio_dev->modes = INDIO_DIRECT_MODE; + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct i2c_device_id isl76682_id[] = { + { "isl76682" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, isl76682_id); + +static const struct of_device_id isl76682_of_match[] = { + { .compatible = "isil,isl76682" }, + { } +}; +MODULE_DEVICE_TABLE(of, isl76682_of_match); + +static struct i2c_driver isl76682_driver = { + .driver = { + .name = "isl76682", + .of_match_table = isl76682_of_match, + }, + .probe = isl76682_probe, + .id_table = isl76682_id, +}; +module_i2c_driver(isl76682_driver); + +MODULE_DESCRIPTION("ISL76682 Ambient Light Sensor driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); diff --git a/drivers/iio/light/ltr390.c b/drivers/iio/light/ltr390.c new file mode 100644 index 000000000000..fff1e899097d --- /dev/null +++ b/drivers/iio/light/ltr390.c @@ -0,0 +1,196 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * IIO driver for Lite-On LTR390 ALS and UV sensor + * (7-bit I2C slave address 0x53) + * + * Based on the work of: + * Shreeya Patel and Shi Zhigang (LTRF216 Driver) + * + * Copyright (C) 2023 Anshul Dalal <anshulusr@gmail.com> + * + * Datasheet: + * https://optoelectronics.liteon.com/upload/download/DS86-2015-0004/LTR-390UV_Final_%20DS_V1%201.pdf + * + * TODO: + * - Support for configurable gain and resolution + * - Sensor suspend/resume support + * - Add support for reading the ALS + * - Interrupt support + */ + +#include <linux/i2c.h> +#include <linux/math.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/regmap.h> + +#include <linux/iio/iio.h> + +#include <asm/unaligned.h> + +#define LTR390_MAIN_CTRL 0x00 +#define LTR390_PART_ID 0x06 +#define LTR390_UVS_DATA 0x10 + +#define LTR390_SW_RESET BIT(4) +#define LTR390_UVS_MODE BIT(3) +#define LTR390_SENSOR_ENABLE BIT(1) + +#define LTR390_PART_NUMBER_ID 0xb + +/* + * At 20-bit resolution (integration time: 400ms) and 18x gain, 2300 counts of + * the sensor are equal to 1 UV Index [Datasheet Page#8]. + * + * For the default resolution of 18-bit (integration time: 100ms) and default + * gain of 3x, the counts/uvi are calculated as follows: + * 2300 / ((3/18) * (100/400)) = 95.83 + */ +#define LTR390_COUNTS_PER_UVI 96 + +/* + * Window Factor is needed when the device is under Window glass with coated + * tinted ink. This is to compensate for the light loss due to the lower + * transmission rate of the window glass and helps * in calculating lux. + */ +#define LTR390_WINDOW_FACTOR 1 + +struct ltr390_data { + struct regmap *regmap; + struct i2c_client *client; + /* Protects device from simulataneous reads */ + struct mutex lock; +}; + +static const struct regmap_config ltr390_regmap_config = { + .name = "ltr390", + .reg_bits = 8, + .reg_stride = 1, + .val_bits = 8, +}; + +static int ltr390_register_read(struct ltr390_data *data, u8 register_address) +{ + struct device *dev = &data->client->dev; + int ret; + u8 recieve_buffer[3]; + + guard(mutex)(&data->lock); + + ret = regmap_bulk_read(data->regmap, register_address, recieve_buffer, + sizeof(recieve_buffer)); + if (ret) { + dev_err(dev, "failed to read measurement data"); + return ret; + } + + return get_unaligned_le24(recieve_buffer); +} + +static int ltr390_read_raw(struct iio_dev *iio_device, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + int ret; + struct ltr390_data *data = iio_priv(iio_device); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = ltr390_register_read(data, LTR390_UVS_DATA); + if (ret < 0) + return ret; + *val = ret; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + *val = LTR390_WINDOW_FACTOR; + *val2 = LTR390_COUNTS_PER_UVI; + return IIO_VAL_FRACTIONAL; + default: + return -EINVAL; + } +} + +static const struct iio_info ltr390_info = { + .read_raw = ltr390_read_raw, +}; + +static const struct iio_chan_spec ltr390_channel = { + .type = IIO_UVINDEX, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE) +}; + +static int ltr390_probe(struct i2c_client *client) +{ + struct ltr390_data *data; + struct iio_dev *indio_dev; + struct device *dev; + int ret, part_number; + + dev = &client->dev; + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + + data->regmap = devm_regmap_init_i2c(client, <r390_regmap_config); + if (IS_ERR(data->regmap)) + return dev_err_probe(dev, PTR_ERR(data->regmap), + "regmap initialization failed\n"); + + data->client = client; + mutex_init(&data->lock); + + indio_dev->info = <r390_info; + indio_dev->channels = <r390_channel; + indio_dev->num_channels = 1; + indio_dev->name = "ltr390"; + + ret = regmap_read(data->regmap, LTR390_PART_ID, &part_number); + if (ret) + return dev_err_probe(dev, ret, + "failed to get sensor's part id\n"); + /* Lower 4 bits of `part_number` change with hardware revisions */ + if (part_number >> 4 != LTR390_PART_NUMBER_ID) + dev_info(dev, "received invalid product id: 0x%x", part_number); + dev_dbg(dev, "LTR390, product id: 0x%x\n", part_number); + + /* reset sensor, chip fails to respond to this, so ignore any errors */ + regmap_set_bits(data->regmap, LTR390_MAIN_CTRL, LTR390_SW_RESET); + + /* Wait for the registers to reset before proceeding */ + usleep_range(1000, 2000); + + ret = regmap_set_bits(data->regmap, LTR390_MAIN_CTRL, + LTR390_SENSOR_ENABLE | LTR390_UVS_MODE); + if (ret) + return dev_err_probe(dev, ret, "failed to enable the sensor\n"); + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct i2c_device_id ltr390_id[] = { + { "ltr390" }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(i2c, ltr390_id); + +static const struct of_device_id ltr390_of_table[] = { + { .compatible = "liteon,ltr390" }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ltr390_of_table); + +static struct i2c_driver ltr390_driver = { + .driver = { + .name = "ltr390", + .of_match_table = ltr390_of_table, + }, + .probe = ltr390_probe, + .id_table = ltr390_id, +}; +module_i2c_driver(ltr390_driver); + +MODULE_AUTHOR("Anshul Dalal <anshulusr@gmail.com>"); +MODULE_DESCRIPTION("Lite-On LTR390 ALS and UV sensor Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c index 8de4dd849936..68dc48420a88 100644 --- a/drivers/iio/light/ltrf216a.c +++ b/drivers/iio/light/ltrf216a.c @@ -234,7 +234,7 @@ static int ltrf216a_read_data(struct ltrf216a_data *data, u8 addr) static int ltrf216a_get_lux(struct ltrf216a_data *data) { int ret, greendata; - u64 lux, div; + u64 lux; ret = ltrf216a_set_power_state(data, true); if (ret) @@ -246,10 +246,9 @@ static int ltrf216a_get_lux(struct ltrf216a_data *data) ltrf216a_set_power_state(data, false); - lux = greendata * 45 * LTRF216A_WIN_FAC * 100; - div = data->als_gain_fac * data->int_time_fac * 100; + lux = greendata * 45 * LTRF216A_WIN_FAC; - return div_u64(lux, div); + return lux; } static int ltrf216a_read_raw(struct iio_dev *indio_dev, @@ -279,7 +278,8 @@ static int ltrf216a_read_raw(struct iio_dev *indio_dev, if (ret < 0) return ret; *val = ret; - return IIO_VAL_INT; + *val2 = data->als_gain_fac * data->int_time_fac; + return IIO_VAL_FRACTIONAL; case IIO_CHAN_INFO_INT_TIME: mutex_lock(&data->lock); ret = ltrf216a_get_int_time(data, val, val2); diff --git a/drivers/iio/light/pa12203001.c b/drivers/iio/light/pa12203001.c index ed241598aefb..636432c45651 100644 --- a/drivers/iio/light/pa12203001.c +++ b/drivers/iio/light/pa12203001.c @@ -472,7 +472,7 @@ static struct i2c_driver pa12203001_driver = { .driver = { .name = PA12203001_DRIVER_NAME, .pm = &pa12203001_pm_ops, - .acpi_match_table = ACPI_PTR(pa12203001_acpi_match), + .acpi_match_table = pa12203001_acpi_match, }, .probe = pa12203001_probe, .remove = pa12203001_remove, diff --git a/drivers/iio/light/rohm-bu27008.c b/drivers/iio/light/rohm-bu27008.c index 6a6d77805091..0f010eff1981 100644 --- a/drivers/iio/light/rohm-bu27008.c +++ b/drivers/iio/light/rohm-bu27008.c @@ -130,6 +130,7 @@ * @BU27008_BLUE: Blue channel. Via data2 (when used). * @BU27008_CLEAR: Clear channel. Via data2 or data3 (when used). * @BU27008_IR: IR channel. Via data3 (when used). + * @BU27008_LUX: Illuminance channel, computed using RGB and IR. * @BU27008_NUM_CHANS: Number of channel types. */ enum bu27008_chan_type { @@ -138,6 +139,7 @@ enum bu27008_chan_type { BU27008_BLUE, BU27008_CLEAR, BU27008_IR, + BU27008_LUX, BU27008_NUM_CHANS }; @@ -172,6 +174,8 @@ static const unsigned long bu27008_scan_masks[] = { ALWAYS_SCANNABLE | BIT(BU27008_CLEAR) | BIT(BU27008_IR), /* buffer is R, G, B, IR */ ALWAYS_SCANNABLE | BIT(BU27008_BLUE) | BIT(BU27008_IR), + /* buffer is R, G, B, IR, LUX */ + ALWAYS_SCANNABLE | BIT(BU27008_BLUE) | BIT(BU27008_IR) | BIT(BU27008_LUX), 0 }; @@ -331,6 +335,19 @@ static const struct iio_chan_spec bu27008_channels[] = { * Hence we don't advertise available ones either. */ BU27008_CHAN(IR, DATA3, 0), + { + .type = IIO_LIGHT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .channel = BU27008_LUX, + .scan_index = BU27008_LUX, + .scan_type = { + .sign = 'u', + .realbits = 64, + .storagebits = 64, + .endianness = IIO_CPU, + }, + }, IIO_CHAN_SOFT_TIMESTAMP(BU27008_NUM_CHANS), }; @@ -1004,6 +1021,169 @@ static int bu27008_read_one(struct bu27008_data *data, struct iio_dev *idev, return ret; } +#define BU27008_LUX_DATA_RED 0 +#define BU27008_LUX_DATA_GREEN 1 +#define BU27008_LUX_DATA_BLUE 2 +#define BU27008_LUX_DATA_IR 3 +#define LUX_DATA_SIZE (BU27008_NUM_HW_CHANS * sizeof(__le16)) + +static int bu27008_read_lux_chans(struct bu27008_data *data, unsigned int time, + __le16 *chan_data) +{ + int ret, chan_sel, tmpret, valid; + + chan_sel = BU27008_BLUE2_IR3 << (ffs(data->cd->chan_sel_mask) - 1); + + ret = regmap_update_bits(data->regmap, data->cd->chan_sel_reg, + data->cd->chan_sel_mask, chan_sel); + if (ret) + return ret; + + ret = bu27008_meas_set(data, true); + if (ret) + return ret; + + msleep(time / USEC_PER_MSEC); + + ret = regmap_read_poll_timeout(data->regmap, data->cd->valid_reg, + valid, (valid & BU27008_MASK_VALID), + BU27008_VALID_RESULT_WAIT_QUANTA_US, + BU27008_MAX_VALID_RESULT_WAIT_US); + if (ret) + goto out; + + ret = regmap_bulk_read(data->regmap, BU27008_REG_DATA0_LO, chan_data, + LUX_DATA_SIZE); + if (ret) + goto out; +out: + tmpret = bu27008_meas_set(data, false); + if (tmpret) + dev_warn(data->dev, "Stopping measurement failed\n"); + + return ret; +} + +/* + * Following equation for computing lux out of register values was given by + * ROHM HW colleagues; + * + * Red = RedData*1024 / Gain * 20 / meas_mode + * Green = GreenData* 1024 / Gain * 20 / meas_mode + * Blue = BlueData* 1024 / Gain * 20 / meas_mode + * IR = IrData* 1024 / Gain * 20 / meas_mode + * + * where meas_mode is the integration time in mS / 10 + * + * IRratio = (IR > 0.18 * Green) ? 0 : 1 + * + * Lx = max(c1*Red + c2*Green + c3*Blue,0) + * + * for + * IRratio 0: c1 = -0.00002237, c2 = 0.0003219, c3 = -0.000120371 + * IRratio 1: c1 = -0.00001074, c2 = 0.000305415, c3 = -0.000129367 + */ + +/* + * The max chan data is 0xffff. When we multiply it by 1024 * 20, we'll get + * 0x4FFFB000 which still fits in 32-bit integer. This won't overflow. + */ +#define NORM_CHAN_DATA_FOR_LX_CALC(chan, gain, time) (le16_to_cpu(chan) * \ + 1024 * 20 / (gain) / (time)) +static u64 bu27008_calc_nlux(struct bu27008_data *data, __le16 *lux_data, + unsigned int gain, unsigned int gain_ir, unsigned int time) +{ + unsigned int red, green, blue, ir; + s64 c1, c2, c3, nlux; + + time /= 10000; + ir = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_IR], gain_ir, time); + red = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_RED], gain, time); + green = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_GREEN], gain, time); + blue = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_BLUE], gain, time); + + if ((u64)ir * 100LLU > (u64)green * 18LLU) { + c1 = -22370; + c2 = 321900; + c3 = -120371; + } else { + c1 = -10740; + c2 = 305415; + c3 = -129367; + } + nlux = c1 * red + c2 * green + c3 * blue; + + return max_t(s64, 0, nlux); +} + +static int bu27008_get_time_n_gains(struct bu27008_data *data, + unsigned int *gain, unsigned int *gain_ir, unsigned int *time) +{ + int ret; + + ret = bu27008_get_gain(data, &data->gts, gain); + if (ret < 0) + return ret; + + ret = bu27008_get_gain(data, &data->gts_ir, gain_ir); + if (ret < 0) + return ret; + + ret = bu27008_get_int_time_us(data); + if (ret < 0) + return ret; + + /* Max integration time is 400000. Fits in signed int. */ + *time = ret; + + return 0; +} + +struct bu27008_buf { + __le16 chan[BU27008_NUM_HW_CHANS]; + u64 lux __aligned(8); + s64 ts __aligned(8); +}; + +static int bu27008_buffer_fill_lux(struct bu27008_data *data, + struct bu27008_buf *raw) +{ + unsigned int gain, gain_ir, time; + int ret; + + ret = bu27008_get_time_n_gains(data, &gain, &gain_ir, &time); + if (ret) + return ret; + + raw->lux = bu27008_calc_nlux(data, raw->chan, gain, gain_ir, time); + + return 0; +} + +static int bu27008_read_lux(struct bu27008_data *data, struct iio_dev *idev, + struct iio_chan_spec const *chan, + int *val, int *val2) +{ + __le16 lux_data[BU27008_NUM_HW_CHANS]; + unsigned int gain, gain_ir, time; + u64 nlux; + int ret; + + ret = bu27008_get_time_n_gains(data, &gain, &gain_ir, &time); + if (ret) + return ret; + + ret = bu27008_read_lux_chans(data, time, lux_data); + if (ret) + return ret; + + nlux = bu27008_calc_nlux(data, lux_data, gain, gain_ir, time); + *val = (int)nlux; + *val2 = nlux >> 32LLU; + + return IIO_VAL_INT_64; +} + static int bu27008_read_raw(struct iio_dev *idev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -1018,7 +1198,10 @@ static int bu27008_read_raw(struct iio_dev *idev, return -EBUSY; mutex_lock(&data->mutex); - ret = bu27008_read_one(data, idev, chan, val, val2); + if (chan->type == IIO_LIGHT) + ret = bu27008_read_lux(data, idev, chan, val, val2); + else + ret = bu27008_read_one(data, idev, chan, val, val2); mutex_unlock(&data->mutex); iio_device_release_direct_mode(idev); @@ -1026,6 +1209,11 @@ static int bu27008_read_raw(struct iio_dev *idev, return ret; case IIO_CHAN_INFO_SCALE: + if (chan->type == IIO_LIGHT) { + *val = 0; + *val2 = 1; + return IIO_VAL_INT_PLUS_NANO; + } ret = bu27008_get_scale(data, chan->scan_index == BU27008_IR, val, val2); if (ret) @@ -1236,10 +1424,7 @@ static irqreturn_t bu27008_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *idev = pf->indio_dev; struct bu27008_data *data = iio_priv(idev); - struct { - __le16 chan[BU27008_NUM_HW_CHANS]; - s64 ts __aligned(8); - } raw; + struct bu27008_buf raw; int ret, dummy; memset(&raw, 0, sizeof(raw)); @@ -1257,6 +1442,12 @@ static irqreturn_t bu27008_trigger_handler(int irq, void *p) if (ret < 0) goto err_read; + if (test_bit(BU27008_LUX, idev->active_scan_mask)) { + ret = bu27008_buffer_fill_lux(data, &raw); + if (ret) + goto err_read; + } + iio_push_to_buffers_with_timestamp(idev, &raw, pf->timestamp); err_read: iio_trigger_notify_done(idev->trig); diff --git a/drivers/iio/light/veml6075.c b/drivers/iio/light/veml6075.c new file mode 100644 index 000000000000..05d4c0e9015d --- /dev/null +++ b/drivers/iio/light/veml6075.c @@ -0,0 +1,474 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Vishay VEML6075 UVA and UVB light sensor + * + * Copyright 2023 Javier Carrasco <javier.carrasco.cruz@gmail.com> + * + * 7-bit I2C slave, address 0x10 + */ + +#include <linux/bitfield.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/regmap.h> +#include <linux/units.h> + +#include <linux/iio/iio.h> + +#define VEML6075_CMD_CONF 0x00 /* configuration register */ +#define VEML6075_CMD_UVA 0x07 /* UVA channel */ +#define VEML6075_CMD_UVB 0x09 /* UVB channel */ +#define VEML6075_CMD_COMP1 0x0A /* visible light compensation */ +#define VEML6075_CMD_COMP2 0x0B /* infrarred light compensation */ +#define VEML6075_CMD_ID 0x0C /* device ID */ + +#define VEML6075_CONF_IT GENMASK(6, 4) /* intregration time */ +#define VEML6075_CONF_HD BIT(3) /* dynamic setting */ +#define VEML6075_CONF_TRIG BIT(2) /* trigger */ +#define VEML6075_CONF_AF BIT(1) /* active force enable */ +#define VEML6075_CONF_SD BIT(0) /* shutdown */ + +#define VEML6075_IT_50_MS 0x00 +#define VEML6075_IT_100_MS 0x01 +#define VEML6075_IT_200_MS 0x02 +#define VEML6075_IT_400_MS 0x03 +#define VEML6075_IT_800_MS 0x04 + +#define VEML6075_AF_DISABLE 0x00 +#define VEML6075_AF_ENABLE 0x01 + +#define VEML6075_SD_DISABLE 0x00 +#define VEML6075_SD_ENABLE 0x01 + +/* Open-air coefficients and responsivity */ +#define VEML6075_A_COEF 2220 +#define VEML6075_B_COEF 1330 +#define VEML6075_C_COEF 2950 +#define VEML6075_D_COEF 1740 +#define VEML6075_UVA_RESP 1461 +#define VEML6075_UVB_RESP 2591 + +static const int veml6075_it_ms[] = { 50, 100, 200, 400, 800 }; + +struct veml6075_data { + struct i2c_client *client; + struct regmap *regmap; + /* + * prevent integration time modification and triggering + * measurements while a measurement is underway. + */ + struct mutex lock; +}; + +/* channel number */ +enum veml6075_chan { + CH_UVA, + CH_UVB, +}; + +static const struct iio_chan_spec veml6075_channels[] = { + { + .type = IIO_INTENSITY, + .channel = CH_UVA, + .modified = 1, + .channel2 = IIO_MOD_LIGHT_UVA, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME), + }, + { + .type = IIO_INTENSITY, + .channel = CH_UVB, + .modified = 1, + .channel2 = IIO_MOD_LIGHT_UVB, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME), + }, + { + .type = IIO_UVINDEX, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME), + }, +}; + +static int veml6075_request_measurement(struct veml6075_data *data) +{ + int ret, conf, int_time; + + ret = regmap_read(data->regmap, VEML6075_CMD_CONF, &conf); + if (ret < 0) + return ret; + + /* disable shutdown and trigger measurement */ + ret = regmap_write(data->regmap, VEML6075_CMD_CONF, + (conf | VEML6075_CONF_TRIG) & ~VEML6075_CONF_SD); + if (ret < 0) + return ret; + + /* + * A measurement requires between 1.30 and 1.40 times the integration + * time for all possible configurations. Using a 1.50 factor simplifies + * operations and ensures reliability under all circumstances. + */ + int_time = veml6075_it_ms[FIELD_GET(VEML6075_CONF_IT, conf)]; + msleep(int_time + (int_time / 2)); + + /* shutdown again, data registers are still accessible */ + return regmap_update_bits(data->regmap, VEML6075_CMD_CONF, + VEML6075_CONF_SD, VEML6075_CONF_SD); +} + +static int veml6075_uva_comp(int raw_uva, int comp1, int comp2) +{ + int comp1a_c, comp2a_c, uva_comp; + + comp1a_c = (comp1 * VEML6075_A_COEF) / 1000U; + comp2a_c = (comp2 * VEML6075_B_COEF) / 1000U; + uva_comp = raw_uva - comp1a_c - comp2a_c; + + return clamp_val(uva_comp, 0, U16_MAX); +} + +static int veml6075_uvb_comp(int raw_uvb, int comp1, int comp2) +{ + int comp1b_c, comp2b_c, uvb_comp; + + comp1b_c = (comp1 * VEML6075_C_COEF) / 1000U; + comp2b_c = (comp2 * VEML6075_D_COEF) / 1000U; + uvb_comp = raw_uvb - comp1b_c - comp2b_c; + + return clamp_val(uvb_comp, 0, U16_MAX); +} + +static int veml6075_read_comp(struct veml6075_data *data, int *c1, int *c2) +{ + int ret; + + ret = regmap_read(data->regmap, VEML6075_CMD_COMP1, c1); + if (ret < 0) + return ret; + + return regmap_read(data->regmap, VEML6075_CMD_COMP2, c2); +} + +static int veml6075_read_uv_direct(struct veml6075_data *data, int chan, + int *val) +{ + int c1, c2, ret; + + guard(mutex)(&data->lock); + + ret = veml6075_request_measurement(data); + if (ret < 0) + return ret; + + ret = veml6075_read_comp(data, &c1, &c2); + if (ret < 0) + return ret; + + switch (chan) { + case CH_UVA: + ret = regmap_read(data->regmap, VEML6075_CMD_UVA, val); + if (ret < 0) + return ret; + + *val = veml6075_uva_comp(*val, c1, c2); + return IIO_VAL_INT; + case CH_UVB: + ret = regmap_read(data->regmap, VEML6075_CMD_UVB, val); + if (ret < 0) + return ret; + + *val = veml6075_uvb_comp(*val, c1, c2); + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int veml6075_read_int_time_index(struct veml6075_data *data) +{ + int ret, conf; + + ret = regmap_read(data->regmap, VEML6075_CMD_CONF, &conf); + if (ret < 0) + return ret; + + return FIELD_GET(VEML6075_CONF_IT, conf); +} + +static int veml6075_read_int_time_ms(struct veml6075_data *data, int *val) +{ + int int_index; + + guard(mutex)(&data->lock); + int_index = veml6075_read_int_time_index(data); + if (int_index < 0) + return int_index; + + *val = veml6075_it_ms[int_index]; + + return IIO_VAL_INT; +} + +static int veml6075_get_uvi_micro(struct veml6075_data *data, int uva_comp, + int uvb_comp) +{ + int uvia_micro = uva_comp * VEML6075_UVA_RESP; + int uvib_micro = uvb_comp * VEML6075_UVB_RESP; + int int_index; + + int_index = veml6075_read_int_time_index(data); + if (int_index < 0) + return int_index; + + switch (int_index) { + case VEML6075_IT_50_MS: + return uvia_micro + uvib_micro; + case VEML6075_IT_100_MS: + case VEML6075_IT_200_MS: + case VEML6075_IT_400_MS: + case VEML6075_IT_800_MS: + return (uvia_micro + uvib_micro) / (2 << int_index); + default: + return -EINVAL; + } +} + +static int veml6075_read_uvi(struct veml6075_data *data, int *val, int *val2) +{ + int ret, c1, c2, uva, uvb, uvi_micro; + + guard(mutex)(&data->lock); + + ret = veml6075_request_measurement(data); + if (ret < 0) + return ret; + + ret = veml6075_read_comp(data, &c1, &c2); + if (ret < 0) + return ret; + + ret = regmap_read(data->regmap, VEML6075_CMD_UVA, &uva); + if (ret < 0) + return ret; + + ret = regmap_read(data->regmap, VEML6075_CMD_UVB, &uvb); + if (ret < 0) + return ret; + + uvi_micro = veml6075_get_uvi_micro(data, veml6075_uva_comp(uva, c1, c2), + veml6075_uvb_comp(uvb, c1, c2)); + if (uvi_micro < 0) + return uvi_micro; + + *val = uvi_micro / MICRO; + *val2 = uvi_micro % MICRO; + + return IIO_VAL_INT_PLUS_MICRO; +} + +static int veml6075_read_responsivity(int chan, int *val, int *val2) +{ + /* scale = 1 / resp */ + switch (chan) { + case CH_UVA: + /* resp = 0.93 c/uW/cm2: scale = 1.75268817 */ + *val = 1; + *val2 = 75268817; + return IIO_VAL_INT_PLUS_NANO; + case CH_UVB: + /* resp = 2.1 c/uW/cm2: scale = 0.476190476 */ + *val = 0; + *val2 = 476190476; + return IIO_VAL_INT_PLUS_NANO; + default: + return -EINVAL; + } +} + +static int veml6075_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + *length = ARRAY_SIZE(veml6075_it_ms); + *vals = veml6075_it_ms; + *type = IIO_VAL_INT; + return IIO_AVAIL_LIST; + + default: + return -EINVAL; + } +} + +static int veml6075_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct veml6075_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + return veml6075_read_uv_direct(data, chan->channel, val); + case IIO_CHAN_INFO_PROCESSED: + return veml6075_read_uvi(data, val, val2); + case IIO_CHAN_INFO_INT_TIME: + return veml6075_read_int_time_ms(data, val); + case IIO_CHAN_INFO_SCALE: + return veml6075_read_responsivity(chan->channel, val, val2); + default: + return -EINVAL; + } +} + +static int veml6075_write_int_time_ms(struct veml6075_data *data, int val) +{ + int i = ARRAY_SIZE(veml6075_it_ms); + + guard(mutex)(&data->lock); + + while (i-- > 0) { + if (val == veml6075_it_ms[i]) + break; + } + if (i < 0) + return -EINVAL; + + return regmap_update_bits(data->regmap, VEML6075_CMD_CONF, + VEML6075_CONF_IT, + FIELD_PREP(VEML6075_CONF_IT, i)); +} + +static int veml6075_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct veml6075_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + return veml6075_write_int_time_ms(data, val); + default: + return -EINVAL; + } +} + +static const struct iio_info veml6075_info = { + .read_avail = veml6075_read_avail, + .read_raw = veml6075_read_raw, + .write_raw = veml6075_write_raw, +}; + +static bool veml6075_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case VEML6075_CMD_CONF: + case VEML6075_CMD_UVA: + case VEML6075_CMD_UVB: + case VEML6075_CMD_COMP1: + case VEML6075_CMD_COMP2: + case VEML6075_CMD_ID: + return true; + default: + return false; + } +} + +static bool veml6075_writable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case VEML6075_CMD_CONF: + return true; + default: + return false; + } +} + +static const struct regmap_config veml6075_regmap_config = { + .name = "veml6075", + .reg_bits = 8, + .val_bits = 16, + .max_register = VEML6075_CMD_ID, + .readable_reg = veml6075_readable_reg, + .writeable_reg = veml6075_writable_reg, + .val_format_endian = REGMAP_ENDIAN_LITTLE, +}; + +static int veml6075_probe(struct i2c_client *client) +{ + struct veml6075_data *data; + struct iio_dev *indio_dev; + struct regmap *regmap; + int config, ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(client, &veml6075_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + data = iio_priv(indio_dev); + data->client = client; + data->regmap = regmap; + + mutex_init(&data->lock); + + indio_dev->name = "veml6075"; + indio_dev->info = &veml6075_info; + indio_dev->channels = veml6075_channels; + indio_dev->num_channels = ARRAY_SIZE(veml6075_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + + ret = devm_regulator_get_enable(&client->dev, "vdd"); + if (ret < 0) + return ret; + + /* default: 100ms integration time, active force enable, shutdown */ + config = FIELD_PREP(VEML6075_CONF_IT, VEML6075_IT_100_MS) | + FIELD_PREP(VEML6075_CONF_AF, VEML6075_AF_ENABLE) | + FIELD_PREP(VEML6075_CONF_SD, VEML6075_SD_ENABLE); + ret = regmap_write(data->regmap, VEML6075_CMD_CONF, config); + if (ret < 0) + return ret; + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id veml6075_id[] = { + { "veml6075" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, veml6075_id); + +static const struct of_device_id veml6075_of_match[] = { + { .compatible = "vishay,veml6075" }, + {} +}; +MODULE_DEVICE_TABLE(of, veml6075_of_match); + +static struct i2c_driver veml6075_driver = { + .driver = { + .name = "veml6075", + .of_match_table = veml6075_of_match, + }, + .probe = veml6075_probe, + .id_table = veml6075_id, +}; + +module_i2c_driver(veml6075_driver); + +MODULE_AUTHOR("Javier Carrasco <javier.carrasco.cruz@gmail.com>"); +MODULE_DESCRIPTION("Vishay VEML6075 UVA and UVB light sensor driver"); +MODULE_LICENSE("GPL"); |