* [PATCH v5 2/2] iio: adc: add MAX40080 current-sense amplifier driver
2026-07-23 6:50 [PATCH v5 0/2] iio: adc: add MAX40080 current-sense amplifier driver Stefan Popa
2026-07-23 6:50 ` [PATCH v5 1/2] dt-bindings: iio: adc: add maxim,max40080 Stefan Popa
@ 2026-07-23 6:50 ` Stefan Popa
2026-07-23 7:06 ` sashiko-bot
1 sibling, 1 reply; 5+ messages in thread
From: Stefan Popa @ 2026-07-23 6:50 UTC (permalink / raw)
To: linux-iio
Cc: linux-hwmon, devicetree, linux-kernel, jic23, andy, nuno.sa,
linux, robh, krzk+dt, conor+dt, dlechner, ciprian.hegbeli,
siratul.islam, u.kleine-koenig, Stefan Popa
The MAX40080 is a bidirectional current-sense amplifier with an
integrated 12-bit ADC and an I2C/SMBus interface. It measures the
voltage across an external shunt resistor and the input bus voltage,
storing the results in an internal FIFO.
Add a direct-mode IIO driver exposing the current and voltage channels
with raw, scale and hardware-gain attributes, a configurable
oversampling (digital averaging) ratio, and PEC-protected register
access. The current scale is derived from the shunt resistor value
described in the device tree.
Signed-off-by: Ciprian Hegbeli <ciprian.hegbeli@analog.com>
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
---
MAINTAINERS | 9 +
drivers/iio/adc/Kconfig | 11 +
drivers/iio/adc/Makefile | 1 +
drivers/iio/adc/max40080.c | 586 +++++++++++++++++++++++++++++++++++++
4 files changed, 607 insertions(+)
create mode 100644 drivers/iio/adc/max40080.c
diff --git a/MAINTAINERS b/MAINTAINERS
index e087673237636..f50c1e00e12bb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15513,6 +15513,15 @@ L: linux-iio@vger.kernel.org
S: Supported
F: drivers/iio/temperature/max30208.c
+MAXIM MAX40080 CURRENT SENSE AMPLIFIER DRIVER
+M: Ciprian Hegbeli <ciprian.hegbeli@analog.com>
+M: Stefan Popa <stefan.popa@analog.com>
+L: linux-iio@vger.kernel.org
+S: Supported
+W: https://ez.analog.com/linux-software-drivers
+F: Documentation/devicetree/bindings/iio/adc/maxim,max40080.yaml
+F: drivers/iio/adc/max40080.c
+
MAXIM MAX7360 KEYPAD LED MFD DRIVER
M: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
S: Maintained
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 58da8255525e4..b651c57bbc3f5 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -1041,6 +1041,17 @@ config MAX34408
To compile this driver as a module, choose M here: the module will be
called max34408.
+config MAX40080
+ tristate "Analog Devices MAX40080 Current Sense Amplifier"
+ depends on I2C
+ help
+ Say yes here to build support for the Analog Devices MAX40080
+ bidirectional current-sense amplifier with a 12-bit ADC and an I2C
+ interface.
+
+ To compile this driver as a module, choose M here: the module will be
+ called max40080.
+
config MAX77541_ADC
tristate "Analog Devices MAX77541 ADC driver"
depends on MFD_MAX77541
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index 7cc8f9a12f763..e1953353c68a4 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_MAX1241) += max1241.o
obj-$(CONFIG_MAX1363) += max1363.o
obj-$(CONFIG_MAX14001) += max14001.o
obj-$(CONFIG_MAX34408) += max34408.o
+obj-$(CONFIG_MAX40080) += max40080.o
obj-$(CONFIG_MAX77541_ADC) += max77541-adc.o
obj-$(CONFIG_MAX9611) += max9611.o
obj-$(CONFIG_MCP320X) += mcp320x.o
diff --git a/drivers/iio/adc/max40080.c b/drivers/iio/adc/max40080.c
new file mode 100644
index 0000000000000..cdf626dccb24f
--- /dev/null
+++ b/drivers/iio/adc/max40080.c
@@ -0,0 +1,586 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * MAX40080 Digital Current-Sense Amplifier driver
+ *
+ * Copyright 2026 Analog Devices, Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/cleanup.h>
+#include <linux/i2c.h>
+#include <linux/iopoll.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/property.h>
+#include <linux/unaligned.h>
+#include <linux/units.h>
+
+#include <linux/iio/iio.h>
+
+#define MAX40080_REG_CFG 0x00
+#define MAX40080_MODE_MSK GENMASK(2, 0)
+#define MAX40080_PEC_EN_MSK BIT(5)
+#define MAX40080_RANGE_MSK BIT(6)
+#define MAX40080_FILTER_MSK GENMASK(14, 12)
+
+#define MAX40080_REG_FIFO_CFG 0x0A
+#define MAX40080_STORE_IV_MSK GENMASK(1, 0)
+
+#define MAX40080_REG_IV 0x10
+/* Current is a 13-bit two's-complement value (magnitude + sign bit). */
+#define MAX40080_IV_I_MSK GENMASK(12, 0)
+#define MAX40080_IV_I_SIGN_BIT 12
+#define MAX40080_IV_V_MAG_MSK GENMASK(27, 16)
+#define MAX40080_IV_VALID_MSK BIT(31)
+
+/* CFG.mode field */
+#define MAX40080_STDBY_MODE 0x00
+#define MAX40080_SINGLE_MODE 0x02 /* one conversion per Quick Command */
+
+/* FIFO_CFG.store_iv field */
+#define MAX40080_STORE_I_V 0x02
+
+#define MAX40080_ADC_RES 4096
+#define MAX40080_INTER_VREF_MV 1250
+#define MAX40080_V_BUFF_GAIN 30
+#define MAX40080_CSA_50MV_GAIN 25
+#define MAX40080_CSA_10MV_GAIN 125
+
+/*
+ * The RANGE field (CFG bit 6) selects one of two current-sense full-scale
+ * ranges (the MAX40080 supports exactly two: +/-50 mV and +/-10 mV). Ordered
+ * so that the array index equals the RANGE field value: index 0 = 50 mV range
+ * (gain 25 V/V), index 1 = 10 mV range (gain 125 V/V).
+ */
+static const int max40080_csa_gain[] = {
+ MAX40080_CSA_50MV_GAIN, MAX40080_CSA_10MV_GAIN,
+};
+
+#define MAX40080_NUM_RANGES ARRAY_SIZE(max40080_csa_gain)
+
+struct max40080_state {
+ struct i2c_client *client;
+ /* Serializes read-modify-write access to the CFG register. */
+ struct mutex lock;
+ u32 shunt_resistor_uohm;
+ /* Cached configuration: the selected RANGE index and oversampling ratio. */
+ unsigned int range;
+ int oversampling_ratio;
+ /*
+ * Precomputed current scale (mA per code) for each RANGE setting, as
+ * {integer, nano} pairs for IIO_VAL_INT_PLUS_NANO. The range is
+ * selected by writing the corresponding scale.
+ */
+ int current_scale[MAX40080_NUM_RANGES][2];
+};
+
+static const int max40080_oversampling_avail[] = { 1, 8, 16, 32, 64, 128 };
+
+static int max40080_update_bits(struct max40080_state *st, u8 reg,
+ u16 mask, u16 val)
+{
+ int ret;
+ int tmp;
+
+ guard(mutex)(&st->lock);
+
+ tmp = i2c_smbus_read_word_data(st->client, reg);
+ if (tmp < 0)
+ return tmp;
+
+ tmp &= ~mask;
+ tmp |= val & mask;
+
+ ret = i2c_smbus_write_word_data(st->client, reg, tmp);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * In single-measurement mode the device sits idle until it receives an SMBus
+ * Quick Command, then performs exactly one current and one voltage conversion
+ * and returns to idle. Triggering on demand this way (rather than running the
+ * FIFO continuously in active mode) means each read returns a fresh, coherent
+ * current/voltage pair instead of the oldest queued FIFO entry.
+ */
+static int max40080_trigger_measurement(struct max40080_state *st)
+{
+ return i2c_smbus_xfer(st->client->adapter, st->client->addr,
+ st->client->flags, I2C_SMBUS_WRITE, 0,
+ I2C_SMBUS_QUICK, NULL);
+}
+
+/*
+ * A single measurement holds the matched current/voltage pair in one 32-bit
+ * word (MAX40080_REG_IV). Reading all four bytes in one transaction returns
+ * both from the same conversion; reading the separate current (0x0C) and
+ * voltage (0x0E) registers would decorrelate the two channels.
+ *
+ * Unlike the word accesses used elsewhere, this is a plain I2C block read: the
+ * SMBus layer does not append or verify a PEC byte for it even when PEC is
+ * otherwise enabled for the device, so this transfer is not PEC protected.
+ */
+static int max40080_read_iv_once(struct max40080_state *st, u32 *iv)
+{
+ u8 buf[4];
+ int ret;
+
+ ret = i2c_smbus_read_i2c_block_data(st->client, MAX40080_REG_IV,
+ sizeof(buf), buf);
+ if (ret < 0)
+ return ret;
+ if (ret != sizeof(buf))
+ return -EIO;
+
+ *iv = get_unaligned_le32(buf);
+
+ return 0;
+}
+
+static int max40080_read_iv(struct max40080_state *st, u32 *iv)
+{
+ u32 tmp = 0;
+ int ret, io_ret;
+
+ guard(mutex)(&st->lock);
+
+ ret = max40080_trigger_measurement(st);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Wait for the conversion to complete by polling the FIFO valid bit
+ * (or bail out on an I2C error). Polling the device's own status makes
+ * this independent of the actual conversion time, which varies with the
+ * oversampling ratio and the bus speed. The timeout is only a safety
+ * ceiling: the worst case is the maximum 128x averaging on both the
+ * current and voltage channels at the slowest 15 ksps base rate plus the
+ * inter-channel switching time, i.e. roughly 20 ms; 50 ms leaves ample
+ * margin.
+ */
+ ret = read_poll_timeout(max40080_read_iv_once, io_ret,
+ io_ret || (tmp & MAX40080_IV_VALID_MSK),
+ 500, 50000, false, st, &tmp);
+ *iv = tmp;
+ if (ret)
+ return ret;
+
+ return io_ret;
+}
+
+static int max40080_get_current(struct max40080_state *st, int *val)
+{
+ u32 iv = 0;
+ int ret;
+
+ ret = max40080_read_iv(st, &iv);
+ if (ret)
+ return ret;
+
+ *val = sign_extend32(FIELD_GET(MAX40080_IV_I_MSK, iv),
+ MAX40080_IV_I_SIGN_BIT);
+
+ return 0;
+}
+
+static int max40080_get_voltage(struct max40080_state *st, int *val)
+{
+ u32 iv = 0;
+ int ret;
+
+ ret = max40080_read_iv(st, &iv);
+ if (ret)
+ return ret;
+
+ *val = FIELD_GET(MAX40080_IV_V_MAG_MSK, iv);
+
+ return 0;
+}
+
+static int max40080_set_range(struct max40080_state *st, unsigned int range)
+{
+ int ret;
+
+ ret = max40080_update_bits(st, MAX40080_REG_CFG, MAX40080_RANGE_MSK,
+ FIELD_PREP(MAX40080_RANGE_MSK, range));
+ if (ret)
+ return ret;
+
+ st->range = range;
+
+ return 0;
+}
+
+/*
+ * Precompute the current scale (mA per code) for each RANGE setting as
+ * {integer, nano} pairs. The shunt drop for a full-scale code is
+ * Vref[mV] / (ADC_RES * gain)
+ * and current = Vshunt / Rshunt, so with Rshunt in micro-ohms the scale in
+ * mA/code is
+ * Vref[mV] * NANO * MICRO / (ADC_RES * gain * Rshunt[uohm])
+ * expressed as an integer part plus a nano fractional part.
+ */
+static void max40080_calc_current_scale(struct max40080_state *st)
+{
+ unsigned int i;
+ u32 rem;
+ u64 tmp;
+
+ for (i = 0; i < MAX40080_NUM_RANGES; i++) {
+ tmp = (u64)MAX40080_INTER_VREF_MV * NANO * MICRO;
+ tmp = div64_u64(tmp, (u64)MAX40080_ADC_RES * max40080_csa_gain[i] *
+ st->shunt_resistor_uohm);
+ st->current_scale[i][0] = div_u64_rem(tmp, NANO, &rem);
+ st->current_scale[i][1] = rem;
+ }
+}
+
+static int max40080_get_oversampling_ratio(struct max40080_state *st, int *val)
+{
+ *val = st->oversampling_ratio;
+
+ return 0;
+}
+
+/*
+ * max40080_oversampling_avail[] is ordered so that its index is the FILTER
+ * field value (index 0 = no averaging, index 1 = 8x, ...). Return that index
+ * for an exact match, or -EINVAL for a value that is not on the list.
+ */
+static int max40080_oversampling_to_filter(int val)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max40080_oversampling_avail); i++)
+ if (max40080_oversampling_avail[i] == val)
+ return i;
+
+ return -EINVAL;
+}
+
+static int max40080_set_oversampling_ratio(struct max40080_state *st, int val)
+{
+ int ret, filter = max40080_oversampling_to_filter(val);
+
+ if (filter < 0)
+ return filter;
+
+ ret = max40080_update_bits(st, MAX40080_REG_CFG, MAX40080_FILTER_MSK,
+ FIELD_PREP(MAX40080_FILTER_MSK, filter));
+ if (ret)
+ return ret;
+
+ st->oversampling_ratio = val;
+
+ return 0;
+}
+
+static int max40080_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long mask)
+{
+ struct max40080_state *st = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ if (chan->type == IIO_CURRENT) {
+ ret = max40080_get_current(st, val);
+ if (ret)
+ return ret;
+ } else if (chan->type == IIO_VOLTAGE) {
+ ret = max40080_get_voltage(st, val);
+ if (ret)
+ return ret;
+ }
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SCALE:
+ if (chan->type == IIO_CURRENT) {
+ /*
+ * The selectable current-sense range is exposed through
+ * scale: each RANGE setting has its own precomputed
+ * mA-per-code value. Userspace picks the range by writing
+ * the matching scale.
+ */
+ *val = st->current_scale[st->range][0];
+ *val2 = st->current_scale[st->range][1];
+ return IIO_VAL_INT_PLUS_NANO;
+ }
+ /* voltage[mV] = raw * Vref[mV] * buffer_gain / ADC_RES */
+ *val = MAX40080_INTER_VREF_MV * MAX40080_V_BUFF_GAIN;
+ *val2 = MAX40080_ADC_RES;
+ return IIO_VAL_FRACTIONAL;
+ case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+ ret = max40080_get_oversampling_ratio(st, val);
+ if (ret)
+ return ret;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int max40080_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask)
+{
+ struct max40080_state *st = iio_priv(indio_dev);
+ unsigned int i;
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_SCALE:
+ /* Only the current channel has a selectable range/scale. */
+ if (chan->type != IIO_CURRENT)
+ return -EINVAL;
+
+ for (i = 0; i < MAX40080_NUM_RANGES; i++)
+ if (val == st->current_scale[i][0] &&
+ val2 == st->current_scale[i][1])
+ return max40080_set_range(st, i);
+
+ return -EINVAL;
+ case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+ ret = max40080_set_oversampling_ratio(st, val);
+ if (ret)
+ return ret;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int max40080_write_raw_get_fmt(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_SCALE:
+ return IIO_VAL_INT_PLUS_NANO;
+ default:
+ return IIO_VAL_INT;
+ }
+}
+
+static int max40080_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long info)
+{
+ struct max40080_state *st = iio_priv(indio_dev);
+
+ switch (info) {
+ case IIO_CHAN_INFO_SCALE:
+ if (chan->type != IIO_CURRENT)
+ return -EINVAL;
+
+ *vals = (int *)st->current_scale;
+ *length = MAX40080_NUM_RANGES * 2;
+ *type = IIO_VAL_INT_PLUS_NANO;
+ return IIO_AVAIL_LIST;
+ case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+ *vals = max40080_oversampling_avail;
+ *length = ARRAY_SIZE(max40080_oversampling_avail);
+ *type = IIO_VAL_INT;
+ return IIO_AVAIL_LIST;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int max40080_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg,
+ unsigned int write_val,
+ unsigned int *read_val)
+{
+ struct max40080_state *st = iio_priv(indio_dev);
+
+ if (read_val) {
+ int val = i2c_smbus_read_word_data(st->client, reg);
+
+ if (val < 0)
+ return val;
+ *read_val = val;
+ return 0;
+ }
+
+ return i2c_smbus_write_word_data(st->client, reg, write_val);
+}
+
+static const struct iio_info max40080_info = {
+ .read_raw = max40080_read_raw,
+ .write_raw = max40080_write_raw,
+ .write_raw_get_fmt = max40080_write_raw_get_fmt,
+ .read_avail = max40080_read_avail,
+ .debugfs_reg_access = &max40080_reg_access,
+};
+
+static const struct iio_chan_spec max40080_channels[] = {
+ {
+ .type = IIO_CURRENT,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ .info_mask_separate_available = BIT(IIO_CHAN_INFO_SCALE),
+ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ .info_mask_shared_by_all_available =
+ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ },
+ {
+ .type = IIO_VOLTAGE,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ .info_mask_shared_by_all_available =
+ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ },
+};
+
+/*
+ * Configure the device from the cached state. The device powers up in standby
+ * with PEC enabled (CFG POR = 0x0060), so PEC is kept enabled throughout.
+ */
+static int max40080_init(struct max40080_state *st)
+{
+ u16 fifo_cfg, cfg;
+ int ret, filter;
+
+ filter = max40080_oversampling_to_filter(st->oversampling_ratio);
+ if (filter < 0)
+ return filter;
+
+ /*
+ * Put the device in standby before (re)configuring the FIFO: the FIFO
+ * configuration register can only be written while the device is not
+ * converting.
+ */
+ cfg = FIELD_PREP(MAX40080_MODE_MSK, MAX40080_STDBY_MODE) |
+ FIELD_PREP(MAX40080_PEC_EN_MSK, 1);
+ ret = i2c_smbus_write_word_data(st->client, MAX40080_REG_CFG, cfg);
+ if (ret)
+ return ret;
+
+ /* Store a matched current+voltage pair per conversion. */
+ fifo_cfg = FIELD_PREP(MAX40080_STORE_IV_MSK, MAX40080_STORE_I_V);
+ ret = i2c_smbus_write_word_data(st->client, MAX40080_REG_FIFO_CFG,
+ fifo_cfg);
+ if (ret)
+ return ret;
+
+ /*
+ * Use single-measurement mode: the device stays idle and converts once
+ * per SMBus Quick Command (see max40080_trigger_measurement()), so each
+ * read returns a fresh sample rather than a queued FIFO entry.
+ */
+ cfg = FIELD_PREP(MAX40080_MODE_MSK, MAX40080_SINGLE_MODE) |
+ FIELD_PREP(MAX40080_PEC_EN_MSK, 1) |
+ FIELD_PREP(MAX40080_RANGE_MSK, st->range) |
+ FIELD_PREP(MAX40080_FILTER_MSK, filter);
+
+ ret = i2c_smbus_write_word_data(st->client, MAX40080_REG_CFG, cfg);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int max40080_probe(struct i2c_client *client)
+{
+ const char *propname = "shunt-resistor-micro-ohms";
+ struct device *dev = &client->dev;
+ struct iio_dev *indio_dev;
+ struct max40080_state *st;
+ int ret;
+
+ /*
+ * The device powers up with PEC enabled (CFG POR = 0x0060) and rejects
+ * unprotected transactions, so PEC support is mandatory, along with word
+ * access, the I2C block read used for the current/voltage pair, and the
+ * Quick Command used to trigger a conversion.
+ */
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_WORD_DATA |
+ I2C_FUNC_SMBUS_I2C_BLOCK |
+ I2C_FUNC_SMBUS_QUICK |
+ I2C_FUNC_SMBUS_PEC))
+ return -EOPNOTSUPP;
+
+ client->flags |= I2C_CLIENT_PEC;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, indio_dev);
+
+ st = iio_priv(indio_dev);
+ st->client = client;
+
+ ret = devm_mutex_init(dev, &st->lock);
+ if (ret)
+ return ret;
+
+ ret = device_property_read_u32(dev, propname, &st->shunt_resistor_uohm);
+ if (ret)
+ return dev_err_probe(dev, ret, "can't read %s\n", propname);
+ if (!st->shunt_resistor_uohm)
+ return dev_err_probe(dev, -EINVAL, "%s must be non-zero\n",
+ propname);
+
+ max40080_calc_current_scale(st);
+
+ /* Defaults: 50 mV range (index 0), no averaging. */
+ st->range = 0;
+ st->oversampling_ratio = 1;
+
+ indio_dev->name = "max40080";
+ indio_dev->info = &max40080_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = max40080_channels;
+ indio_dev->num_channels = ARRAY_SIZE(max40080_channels);
+
+ ret = max40080_init(st);
+ if (ret)
+ return ret;
+
+ return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct i2c_device_id max40080_i2c_ids[] = {
+ { "max40080" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max40080_i2c_ids);
+
+static const struct of_device_id max40080_of_match[] = {
+ { .compatible = "maxim,max40080" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, max40080_of_match);
+
+static struct i2c_driver max40080_driver = {
+ .driver = {
+ .name = "max40080",
+ .of_match_table = max40080_of_match,
+ },
+ .probe = max40080_probe,
+ .id_table = max40080_i2c_ids,
+};
+module_i2c_driver(max40080_driver);
+
+MODULE_AUTHOR("Ciprian Hegbeli <ciprian.hegbeli@analog.com>");
+MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices MAX40080 current-sense amplifier driver");
+MODULE_LICENSE("GPL");
--
2.53.0
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