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-rw-r--r--drivers/hwmon/adt7411.c720
1 files changed, 720 insertions, 0 deletions
diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c
new file mode 100644
index 000000000..bf5c5618f
--- /dev/null
+++ b/drivers/hwmon/adt7411.c
@@ -0,0 +1,720 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Driver for the ADT7411 (I2C/SPI 8 channel 10 bit ADC & temperature-sensor)
+ *
+ * Copyright (C) 2008, 2010 Pengutronix
+ *
+ * TODO: SPI, use power-down mode for suspend?, interrupt handling?
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/slab.h>
+
+#define ADT7411_REG_STAT_1 0x00
+#define ADT7411_STAT_1_INT_TEMP_HIGH BIT(0)
+#define ADT7411_STAT_1_INT_TEMP_LOW BIT(1)
+#define ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1 BIT(2)
+#define ADT7411_STAT_1_EXT_TEMP_LOW BIT(3)
+#define ADT7411_STAT_1_EXT_TEMP_FAULT BIT(4)
+#define ADT7411_STAT_1_AIN2 BIT(5)
+#define ADT7411_STAT_1_AIN3 BIT(6)
+#define ADT7411_STAT_1_AIN4 BIT(7)
+#define ADT7411_REG_STAT_2 0x01
+#define ADT7411_STAT_2_AIN5 BIT(0)
+#define ADT7411_STAT_2_AIN6 BIT(1)
+#define ADT7411_STAT_2_AIN7 BIT(2)
+#define ADT7411_STAT_2_AIN8 BIT(3)
+#define ADT7411_STAT_2_VDD BIT(4)
+#define ADT7411_REG_INT_TEMP_VDD_LSB 0x03
+#define ADT7411_REG_EXT_TEMP_AIN14_LSB 0x04
+#define ADT7411_REG_VDD_MSB 0x06
+#define ADT7411_REG_INT_TEMP_MSB 0x07
+#define ADT7411_REG_EXT_TEMP_AIN1_MSB 0x08
+
+#define ADT7411_REG_CFG1 0x18
+#define ADT7411_CFG1_START_MONITOR BIT(0)
+#define ADT7411_CFG1_RESERVED_BIT1 BIT(1)
+#define ADT7411_CFG1_EXT_TDM BIT(2)
+#define ADT7411_CFG1_RESERVED_BIT3 BIT(3)
+
+#define ADT7411_REG_CFG2 0x19
+#define ADT7411_CFG2_DISABLE_AVG BIT(5)
+
+#define ADT7411_REG_CFG3 0x1a
+#define ADT7411_CFG3_ADC_CLK_225 BIT(0)
+#define ADT7411_CFG3_RESERVED_BIT1 BIT(1)
+#define ADT7411_CFG3_RESERVED_BIT2 BIT(2)
+#define ADT7411_CFG3_RESERVED_BIT3 BIT(3)
+#define ADT7411_CFG3_REF_VDD BIT(4)
+
+#define ADT7411_REG_VDD_HIGH 0x23
+#define ADT7411_REG_VDD_LOW 0x24
+#define ADT7411_REG_TEMP_HIGH(nr) (0x25 + 2 * (nr))
+#define ADT7411_REG_TEMP_LOW(nr) (0x26 + 2 * (nr))
+#define ADT7411_REG_IN_HIGH(nr) ((nr) > 1 \
+ ? 0x2b + 2 * ((nr)-2) \
+ : 0x27)
+#define ADT7411_REG_IN_LOW(nr) ((nr) > 1 \
+ ? 0x2c + 2 * ((nr)-2) \
+ : 0x28)
+
+#define ADT7411_REG_DEVICE_ID 0x4d
+#define ADT7411_REG_MANUFACTURER_ID 0x4e
+
+#define ADT7411_DEVICE_ID 0x2
+#define ADT7411_MANUFACTURER_ID 0x41
+
+static const unsigned short normal_i2c[] = { 0x48, 0x4a, 0x4b, I2C_CLIENT_END };
+
+static const u8 adt7411_in_alarm_reg[] = {
+ ADT7411_REG_STAT_2,
+ ADT7411_REG_STAT_1,
+ ADT7411_REG_STAT_1,
+ ADT7411_REG_STAT_1,
+ ADT7411_REG_STAT_1,
+ ADT7411_REG_STAT_2,
+ ADT7411_REG_STAT_2,
+ ADT7411_REG_STAT_2,
+ ADT7411_REG_STAT_2,
+};
+
+static const u8 adt7411_in_alarm_bits[] = {
+ ADT7411_STAT_2_VDD,
+ ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1,
+ ADT7411_STAT_1_AIN2,
+ ADT7411_STAT_1_AIN3,
+ ADT7411_STAT_1_AIN4,
+ ADT7411_STAT_2_AIN5,
+ ADT7411_STAT_2_AIN6,
+ ADT7411_STAT_2_AIN7,
+ ADT7411_STAT_2_AIN8,
+};
+
+struct adt7411_data {
+ struct mutex device_lock; /* for "atomic" device accesses */
+ struct mutex update_lock;
+ unsigned long next_update;
+ long vref_cached;
+ struct i2c_client *client;
+ bool use_ext_temp;
+};
+
+/*
+ * When reading a register containing (up to 4) lsb, all associated
+ * msb-registers get locked by the hardware. After _one_ of those msb is read,
+ * _all_ are unlocked. In order to use this locking correctly, reading lsb/msb
+ * is protected here with a mutex, too.
+ */
+static int adt7411_read_10_bit(struct i2c_client *client, u8 lsb_reg,
+ u8 msb_reg, u8 lsb_shift)
+{
+ struct adt7411_data *data = i2c_get_clientdata(client);
+ int val, tmp;
+
+ mutex_lock(&data->device_lock);
+
+ val = i2c_smbus_read_byte_data(client, lsb_reg);
+ if (val < 0)
+ goto exit_unlock;
+
+ tmp = (val >> lsb_shift) & 3;
+ val = i2c_smbus_read_byte_data(client, msb_reg);
+
+ if (val >= 0)
+ val = (val << 2) | tmp;
+
+ exit_unlock:
+ mutex_unlock(&data->device_lock);
+
+ return val;
+}
+
+static int adt7411_modify_bit(struct i2c_client *client, u8 reg, u8 bit,
+ bool flag)
+{
+ struct adt7411_data *data = i2c_get_clientdata(client);
+ int ret, val;
+
+ mutex_lock(&data->device_lock);
+
+ ret = i2c_smbus_read_byte_data(client, reg);
+ if (ret < 0)
+ goto exit_unlock;
+
+ if (flag)
+ val = ret | bit;
+ else
+ val = ret & ~bit;
+
+ ret = i2c_smbus_write_byte_data(client, reg, val);
+
+ exit_unlock:
+ mutex_unlock(&data->device_lock);
+ return ret;
+}
+
+static ssize_t adt7411_show_bit(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct sensor_device_attribute_2 *attr2 = to_sensor_dev_attr_2(attr);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret = i2c_smbus_read_byte_data(client, attr2->index);
+
+ return ret < 0 ? ret : sprintf(buf, "%u\n", !!(ret & attr2->nr));
+}
+
+static ssize_t adt7411_set_bit(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct sensor_device_attribute_2 *s_attr2 = to_sensor_dev_attr_2(attr);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret;
+ unsigned long flag;
+
+ ret = kstrtoul(buf, 0, &flag);
+ if (ret || flag > 1)
+ return -EINVAL;
+
+ ret = adt7411_modify_bit(client, s_attr2->index, s_attr2->nr, flag);
+
+ /* force update */
+ mutex_lock(&data->update_lock);
+ data->next_update = jiffies;
+ mutex_unlock(&data->update_lock);
+
+ return ret < 0 ? ret : count;
+}
+
+#define ADT7411_BIT_ATTR(__name, __reg, __bit) \
+ SENSOR_DEVICE_ATTR_2(__name, S_IRUGO | S_IWUSR, adt7411_show_bit, \
+ adt7411_set_bit, __bit, __reg)
+
+static ADT7411_BIT_ATTR(no_average, ADT7411_REG_CFG2, ADT7411_CFG2_DISABLE_AVG);
+static ADT7411_BIT_ATTR(fast_sampling, ADT7411_REG_CFG3, ADT7411_CFG3_ADC_CLK_225);
+static ADT7411_BIT_ATTR(adc_ref_vdd, ADT7411_REG_CFG3, ADT7411_CFG3_REF_VDD);
+
+static struct attribute *adt7411_attrs[] = {
+ &sensor_dev_attr_no_average.dev_attr.attr,
+ &sensor_dev_attr_fast_sampling.dev_attr.attr,
+ &sensor_dev_attr_adc_ref_vdd.dev_attr.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(adt7411);
+
+static int adt7411_read_in_alarm(struct device *dev, int channel, long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, adt7411_in_alarm_reg[channel]);
+ if (ret < 0)
+ return ret;
+ *val = !!(ret & adt7411_in_alarm_bits[channel]);
+ return 0;
+}
+
+static int adt7411_read_in_vdd(struct device *dev, u32 attr, long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret;
+
+ switch (attr) {
+ case hwmon_in_input:
+ ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
+ ADT7411_REG_VDD_MSB, 2);
+ if (ret < 0)
+ return ret;
+ *val = ret * 7000 / 1024;
+ return 0;
+ case hwmon_in_min:
+ ret = i2c_smbus_read_byte_data(client, ADT7411_REG_VDD_LOW);
+ if (ret < 0)
+ return ret;
+ *val = ret * 7000 / 256;
+ return 0;
+ case hwmon_in_max:
+ ret = i2c_smbus_read_byte_data(client, ADT7411_REG_VDD_HIGH);
+ if (ret < 0)
+ return ret;
+ *val = ret * 7000 / 256;
+ return 0;
+ case hwmon_in_alarm:
+ return adt7411_read_in_alarm(dev, 0, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_update_vref(struct device *dev)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int val;
+
+ if (time_after_eq(jiffies, data->next_update)) {
+ val = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);
+ if (val < 0)
+ return val;
+
+ if (val & ADT7411_CFG3_REF_VDD) {
+ val = adt7411_read_in_vdd(dev, hwmon_in_input,
+ &data->vref_cached);
+ if (val < 0)
+ return val;
+ } else {
+ data->vref_cached = 2250;
+ }
+
+ data->next_update = jiffies + HZ;
+ }
+
+ return 0;
+}
+
+static int adt7411_read_in_chan(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+
+ int ret;
+ int reg, lsb_reg, lsb_shift;
+ int nr = channel - 1;
+
+ mutex_lock(&data->update_lock);
+ ret = adt7411_update_vref(dev);
+ if (ret < 0)
+ goto exit_unlock;
+
+ switch (attr) {
+ case hwmon_in_input:
+ lsb_reg = ADT7411_REG_EXT_TEMP_AIN14_LSB + (nr >> 2);
+ lsb_shift = 2 * (nr & 0x03);
+ ret = adt7411_read_10_bit(client, lsb_reg,
+ ADT7411_REG_EXT_TEMP_AIN1_MSB + nr,
+ lsb_shift);
+ if (ret < 0)
+ goto exit_unlock;
+ *val = ret * data->vref_cached / 1024;
+ ret = 0;
+ break;
+ case hwmon_in_min:
+ case hwmon_in_max:
+ reg = (attr == hwmon_in_min)
+ ? ADT7411_REG_IN_LOW(channel)
+ : ADT7411_REG_IN_HIGH(channel);
+ ret = i2c_smbus_read_byte_data(client, reg);
+ if (ret < 0)
+ goto exit_unlock;
+ *val = ret * data->vref_cached / 256;
+ ret = 0;
+ break;
+ case hwmon_in_alarm:
+ ret = adt7411_read_in_alarm(dev, channel, val);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ exit_unlock:
+ mutex_unlock(&data->update_lock);
+ return ret;
+}
+
+static int adt7411_read_in(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ if (channel == 0)
+ return adt7411_read_in_vdd(dev, attr, val);
+ else
+ return adt7411_read_in_chan(dev, attr, channel, val);
+}
+
+
+static int adt7411_read_temp_alarm(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret, bit;
+
+ ret = i2c_smbus_read_byte_data(client, ADT7411_REG_STAT_1);
+ if (ret < 0)
+ return ret;
+
+ switch (attr) {
+ case hwmon_temp_min_alarm:
+ bit = channel ? ADT7411_STAT_1_EXT_TEMP_LOW
+ : ADT7411_STAT_1_INT_TEMP_LOW;
+ break;
+ case hwmon_temp_max_alarm:
+ bit = channel ? ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1
+ : ADT7411_STAT_1_INT_TEMP_HIGH;
+ break;
+ case hwmon_temp_fault:
+ bit = ADT7411_STAT_1_EXT_TEMP_FAULT;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ *val = !!(ret & bit);
+ return 0;
+}
+
+static int adt7411_read_temp(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret, reg, regl, regh;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ regl = channel ? ADT7411_REG_EXT_TEMP_AIN14_LSB :
+ ADT7411_REG_INT_TEMP_VDD_LSB;
+ regh = channel ? ADT7411_REG_EXT_TEMP_AIN1_MSB :
+ ADT7411_REG_INT_TEMP_MSB;
+ ret = adt7411_read_10_bit(client, regl, regh, 0);
+ if (ret < 0)
+ return ret;
+ ret = ret & 0x200 ? ret - 0x400 : ret; /* 10 bit signed */
+ *val = ret * 250;
+ return 0;
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ reg = (attr == hwmon_temp_min)
+ ? ADT7411_REG_TEMP_LOW(channel)
+ : ADT7411_REG_TEMP_HIGH(channel);
+ ret = i2c_smbus_read_byte_data(client, reg);
+ if (ret < 0)
+ return ret;
+ ret = ret & 0x80 ? ret - 0x100 : ret; /* 8 bit signed */
+ *val = ret * 1000;
+ return 0;
+ case hwmon_temp_min_alarm:
+ case hwmon_temp_max_alarm:
+ case hwmon_temp_fault:
+ return adt7411_read_temp_alarm(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ switch (type) {
+ case hwmon_in:
+ return adt7411_read_in(dev, attr, channel, val);
+ case hwmon_temp:
+ return adt7411_read_temp(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_write_in_vdd(struct device *dev, u32 attr, long val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int reg;
+
+ val = clamp_val(val, 0, 255 * 7000 / 256);
+ val = DIV_ROUND_CLOSEST(val * 256, 7000);
+
+ switch (attr) {
+ case hwmon_in_min:
+ reg = ADT7411_REG_VDD_LOW;
+ break;
+ case hwmon_in_max:
+ reg = ADT7411_REG_VDD_HIGH;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int adt7411_write_in_chan(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret, reg;
+
+ mutex_lock(&data->update_lock);
+ ret = adt7411_update_vref(dev);
+ if (ret < 0)
+ goto exit_unlock;
+ val = clamp_val(val, 0, 255 * data->vref_cached / 256);
+ val = DIV_ROUND_CLOSEST(val * 256, data->vref_cached);
+
+ switch (attr) {
+ case hwmon_in_min:
+ reg = ADT7411_REG_IN_LOW(channel);
+ break;
+ case hwmon_in_max:
+ reg = ADT7411_REG_IN_HIGH(channel);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ goto exit_unlock;
+ }
+
+ ret = i2c_smbus_write_byte_data(client, reg, val);
+ exit_unlock:
+ mutex_unlock(&data->update_lock);
+ return ret;
+}
+
+static int adt7411_write_in(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ if (channel == 0)
+ return adt7411_write_in_vdd(dev, attr, val);
+ else
+ return adt7411_write_in_chan(dev, attr, channel, val);
+}
+
+static int adt7411_write_temp(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int reg;
+
+ val = clamp_val(val, -128000, 127000);
+ val = DIV_ROUND_CLOSEST(val, 1000);
+
+ switch (attr) {
+ case hwmon_temp_min:
+ reg = ADT7411_REG_TEMP_LOW(channel);
+ break;
+ case hwmon_temp_max:
+ reg = ADT7411_REG_TEMP_HIGH(channel);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int adt7411_write(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long val)
+{
+ switch (type) {
+ case hwmon_in:
+ return adt7411_write_in(dev, attr, channel, val);
+ case hwmon_temp:
+ return adt7411_write_temp(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t adt7411_is_visible(const void *_data,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ const struct adt7411_data *data = _data;
+ bool visible;
+
+ switch (type) {
+ case hwmon_in:
+ visible = channel == 0 || channel >= 3 || !data->use_ext_temp;
+ switch (attr) {
+ case hwmon_in_input:
+ case hwmon_in_alarm:
+ return visible ? S_IRUGO : 0;
+ case hwmon_in_min:
+ case hwmon_in_max:
+ return visible ? S_IRUGO | S_IWUSR : 0;
+ }
+ break;
+ case hwmon_temp:
+ visible = channel == 0 || data->use_ext_temp;
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_min_alarm:
+ case hwmon_temp_max_alarm:
+ case hwmon_temp_fault:
+ return visible ? S_IRUGO : 0;
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ return visible ? S_IRUGO | S_IWUSR : 0;
+ }
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int adt7411_detect(struct i2c_client *client,
+ struct i2c_board_info *info)
+{
+ int val;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ val = i2c_smbus_read_byte_data(client, ADT7411_REG_MANUFACTURER_ID);
+ if (val < 0 || val != ADT7411_MANUFACTURER_ID) {
+ dev_dbg(&client->dev,
+ "Wrong manufacturer ID. Got %d, expected %d\n",
+ val, ADT7411_MANUFACTURER_ID);
+ return -ENODEV;
+ }
+
+ val = i2c_smbus_read_byte_data(client, ADT7411_REG_DEVICE_ID);
+ if (val < 0 || val != ADT7411_DEVICE_ID) {
+ dev_dbg(&client->dev,
+ "Wrong device ID. Got %d, expected %d\n",
+ val, ADT7411_DEVICE_ID);
+ return -ENODEV;
+ }
+
+ strscpy(info->type, "adt7411", I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int adt7411_init_device(struct adt7411_data *data)
+{
+ int ret;
+ u8 val;
+
+ ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG3);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We must only write zero to bit 1 and bit 2 and only one to bit 3
+ * according to the datasheet.
+ */
+ val = ret;
+ val &= ~(ADT7411_CFG3_RESERVED_BIT1 | ADT7411_CFG3_RESERVED_BIT2);
+ val |= ADT7411_CFG3_RESERVED_BIT3;
+
+ ret = i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG3, val);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG1);
+ if (ret < 0)
+ return ret;
+
+ data->use_ext_temp = ret & ADT7411_CFG1_EXT_TDM;
+
+ /*
+ * We must only write zero to bit 1 and only one to bit 3 according to
+ * the datasheet.
+ */
+ val = ret;
+ val &= ~ADT7411_CFG1_RESERVED_BIT1;
+ val |= ADT7411_CFG1_RESERVED_BIT3;
+
+ /* enable monitoring */
+ val |= ADT7411_CFG1_START_MONITOR;
+
+ return i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG1, val);
+}
+
+static const struct hwmon_channel_info *adt7411_info[] = {
+ HWMON_CHANNEL_INFO(in,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM),
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MIN_ALARM |
+ HWMON_T_MAX | HWMON_T_MAX_ALARM,
+ HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MIN_ALARM |
+ HWMON_T_MAX | HWMON_T_MAX_ALARM | HWMON_T_FAULT),
+ NULL
+};
+
+static const struct hwmon_ops adt7411_hwmon_ops = {
+ .is_visible = adt7411_is_visible,
+ .read = adt7411_read,
+ .write = adt7411_write,
+};
+
+static const struct hwmon_chip_info adt7411_chip_info = {
+ .ops = &adt7411_hwmon_ops,
+ .info = adt7411_info,
+};
+
+static int adt7411_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct adt7411_data *data;
+ struct device *hwmon_dev;
+ int ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, data);
+ data->client = client;
+ mutex_init(&data->device_lock);
+ mutex_init(&data->update_lock);
+
+ ret = adt7411_init_device(data);
+ if (ret < 0)
+ return ret;
+
+ /* force update on first occasion */
+ data->next_update = jiffies;
+
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
+ data,
+ &adt7411_chip_info,
+ adt7411_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id adt7411_id[] = {
+ { "adt7411", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adt7411_id);
+
+static struct i2c_driver adt7411_driver = {
+ .driver = {
+ .name = "adt7411",
+ },
+ .probe_new = adt7411_probe,
+ .id_table = adt7411_id,
+ .detect = adt7411_detect,
+ .address_list = normal_i2c,
+ .class = I2C_CLASS_HWMON,
+};
+
+module_i2c_driver(adt7411_driver);
+
+MODULE_AUTHOR("Sascha Hauer, Wolfram Sang <kernel@pengutronix.de>");
+MODULE_DESCRIPTION("ADT7411 driver");
+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 22:27:43 +0000