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Diffstat (limited to 'drivers/hwmon/lm77.c')
-rw-r--r--drivers/hwmon/lm77.c514
1 files changed, 224 insertions, 290 deletions
diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c
index b28a297be50..5ceb443b938 100644
--- a/drivers/hwmon/lm77.c
+++ b/drivers/hwmon/lm77.c
@@ -1,29 +1,25 @@
/*
- lm77.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
-
- Copyright (c) 2004 Andras BALI <drewie@freemail.hu>
-
- Heavily based on lm75.c by Frodo Looijaard <frodol@dds.nl>. The LM77
- is a temperature sensor and thermal window comparator with 0.5 deg
- resolution made by National Semiconductor. Complete datasheet can be
- obtained at their site:
- http://www.national.com/pf/LM/LM77.html
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+ * lm77.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ *
+ * Copyright (c) 2004 Andras BALI <drewie@freemail.hu>
+ *
+ * Heavily based on lm75.c by Frodo Looijaard <frodol@dds.nl>. The LM77
+ * is a temperature sensor and thermal window comparator with 0.5 deg
+ * resolution made by National Semiconductor. Complete datasheet can be
+ * obtained at their site:
+ * http://www.national.com/pf/LM/LM77.html
+ *
+ * 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.
+ */
#include <linux/module.h>
#include <linux/init.h>
@@ -47,59 +43,44 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
#define LM77_REG_TEMP_MIN 0x04
#define LM77_REG_TEMP_MAX 0x05
+enum temp_index {
+ t_input = 0,
+ t_crit,
+ t_min,
+ t_max,
+ t_hyst,
+ t_num_temp
+};
+
+static const u8 temp_regs[t_num_temp] = {
+ [t_input] = LM77_REG_TEMP,
+ [t_min] = LM77_REG_TEMP_MIN,
+ [t_max] = LM77_REG_TEMP_MAX,
+ [t_crit] = LM77_REG_TEMP_CRIT,
+ [t_hyst] = LM77_REG_TEMP_HYST,
+};
+
/* Each client has this additional data */
struct lm77_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
char valid;
unsigned long last_updated; /* In jiffies */
- int temp_input; /* Temperatures */
- int temp_crit;
- int temp_min;
- int temp_max;
- int temp_hyst;
+ int temp[t_num_temp]; /* index using temp_index */
u8 alarms;
};
-static int lm77_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int lm77_detect(struct i2c_client *client, struct i2c_board_info *info);
-static void lm77_init_client(struct i2c_client *client);
-static int lm77_remove(struct i2c_client *client);
-static u16 lm77_read_value(struct i2c_client *client, u8 reg);
-static int lm77_write_value(struct i2c_client *client, u8 reg, u16 value);
-
-static struct lm77_data *lm77_update_device(struct device *dev);
-
-
-static const struct i2c_device_id lm77_id[] = {
- { "lm77", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, lm77_id);
-
-/* This is the driver that will be inserted */
-static struct i2c_driver lm77_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "lm77",
- },
- .probe = lm77_probe,
- .remove = lm77_remove,
- .id_table = lm77_id,
- .detect = lm77_detect,
- .address_list = normal_i2c,
-};
-
/* straight from the datasheet */
#define LM77_TEMP_MIN (-55000)
#define LM77_TEMP_MAX 125000
-/* In the temperature registers, the low 3 bits are not part of the
- temperature values; they are the status bits. */
+/*
+ * In the temperature registers, the low 3 bits are not part of the
+ * temperature values; they are the status bits.
+ */
static inline s16 LM77_TEMP_TO_REG(int temp)
{
- int ntemp = SENSORS_LIMIT(temp, LM77_TEMP_MIN, LM77_TEMP_MAX);
+ int ntemp = clamp_val(temp, LM77_TEMP_MIN, LM77_TEMP_MAX);
return (ntemp / 500) * 8;
}
@@ -108,88 +89,120 @@ static inline int LM77_TEMP_FROM_REG(s16 reg)
return (reg / 8) * 500;
}
-/* sysfs stuff */
-
-/* read routines for temperature limits */
-#define show(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm77_data *data = lm77_update_device(dev); \
- return sprintf(buf, "%d\n", data->value); \
+/*
+ * All registers are word-sized, except for the configuration register.
+ * The LM77 uses the high-byte first convention.
+ */
+static u16 lm77_read_value(struct i2c_client *client, u8 reg)
+{
+ if (reg == LM77_REG_CONF)
+ return i2c_smbus_read_byte_data(client, reg);
+ else
+ return i2c_smbus_read_word_swapped(client, reg);
}
-show(temp_input);
-show(temp_crit);
-show(temp_min);
-show(temp_max);
+static int lm77_write_value(struct i2c_client *client, u8 reg, u16 value)
+{
+ if (reg == LM77_REG_CONF)
+ return i2c_smbus_write_byte_data(client, reg, value);
+ else
+ return i2c_smbus_write_word_swapped(client, reg, value);
+}
-/* read routines for hysteresis values */
-static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+static struct lm77_data *lm77_update_device(struct device *dev)
{
- struct lm77_data *data = lm77_update_device(dev);
- return sprintf(buf, "%d\n", data->temp_crit - data->temp_hyst);
+ struct lm77_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int i;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+ || !data->valid) {
+ dev_dbg(&client->dev, "Starting lm77 update\n");
+ for (i = 0; i < t_num_temp; i++) {
+ data->temp[i] =
+ LM77_TEMP_FROM_REG(lm77_read_value(client,
+ temp_regs[i]));
+ }
+ data->alarms =
+ lm77_read_value(client, LM77_REG_TEMP) & 0x0007;
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
}
-static ssize_t show_temp_min_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+
+/* sysfs stuff */
+
+static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
+ char *buf)
{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm77_data *data = lm77_update_device(dev);
- return sprintf(buf, "%d\n", data->temp_min + data->temp_hyst);
+
+ return sprintf(buf, "%d\n", data->temp[attr->index]);
}
-static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+
+static ssize_t show_temp_hyst(struct device *dev,
+ struct device_attribute *devattr, char *buf)
{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm77_data *data = lm77_update_device(dev);
- return sprintf(buf, "%d\n", data->temp_max - data->temp_hyst);
-}
+ int nr = attr->index;
+ int temp;
-/* write routines */
-#define set(value, reg) \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm77_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- mutex_lock(&data->update_lock); \
- data->value = val; \
- lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
- mutex_unlock(&data->update_lock); \
- return count; \
-}
+ temp = nr == t_min ? data->temp[nr] + data->temp[t_hyst] :
+ data->temp[nr] - data->temp[t_hyst];
-set(temp_min, LM77_REG_TEMP_MIN);
-set(temp_max, LM77_REG_TEMP_MAX);
+ return sprintf(buf, "%d\n", temp);
+}
-/* hysteresis is stored as a relative value on the chip, so it has to be
- converted first */
-static ssize_t set_temp_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm77_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm77_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = attr->index;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
- data->temp_hyst = data->temp_crit - val;
- lm77_write_value(client, LM77_REG_TEMP_HYST,
- LM77_TEMP_TO_REG(data->temp_hyst));
+ data->temp[nr] = val;
+ lm77_write_value(client, temp_regs[nr], LM77_TEMP_TO_REG(val));
mutex_unlock(&data->update_lock);
return count;
}
-/* preserve hysteresis when setting T_crit */
-static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+/*
+ * hysteresis is stored as a relative value on the chip, so it has to be
+ * converted first.
+ */
+static ssize_t set_temp_hyst(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm77_data *data = i2c_get_clientdata(client);
- long val = simple_strtoul(buf, NULL, 10);
- int oldcrithyst;
-
+ struct lm77_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
mutex_lock(&data->update_lock);
- oldcrithyst = data->temp_crit - data->temp_hyst;
- data->temp_crit = val;
- data->temp_hyst = data->temp_crit - oldcrithyst;
- lm77_write_value(client, LM77_REG_TEMP_CRIT,
- LM77_TEMP_TO_REG(data->temp_crit));
+ data->temp[t_hyst] = data->temp[t_crit] - val;
lm77_write_value(client, LM77_REG_TEMP_HYST,
- LM77_TEMP_TO_REG(data->temp_hyst));
+ LM77_TEMP_TO_REG(data->temp[t_hyst]));
mutex_unlock(&data->update_lock);
return count;
}
@@ -202,80 +215,75 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
}
-static DEVICE_ATTR(temp1_input, S_IRUGO,
- show_temp_input, NULL);
-static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO,
- show_temp_crit, set_temp_crit);
-static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO,
- show_temp_min, set_temp_min);
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
- show_temp_max, set_temp_max);
-
-static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO,
- show_temp_crit_hyst, set_temp_crit_hyst);
-static DEVICE_ATTR(temp1_min_hyst, S_IRUGO,
- show_temp_min_hyst, NULL);
-static DEVICE_ATTR(temp1_max_hyst, S_IRUGO,
- show_temp_max_hyst, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, t_input);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp, set_temp,
+ t_crit);
+static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp, set_temp,
+ t_min);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp, set_temp,
+ t_max);
+
+static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst,
+ set_temp_hyst, t_crit);
+static SENSOR_DEVICE_ATTR(temp1_min_hyst, S_IRUGO, show_temp_hyst, NULL, t_min);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO, show_temp_hyst, NULL, t_max);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 1);
-static struct attribute *lm77_attributes[] = {
- &dev_attr_temp1_input.attr,
- &dev_attr_temp1_crit.attr,
- &dev_attr_temp1_min.attr,
- &dev_attr_temp1_max.attr,
- &dev_attr_temp1_crit_hyst.attr,
- &dev_attr_temp1_min_hyst.attr,
- &dev_attr_temp1_max_hyst.attr,
+static struct attribute *lm77_attrs[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp1_min_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
NULL
};
-
-static const struct attribute_group lm77_group = {
- .attrs = lm77_attributes,
-};
+ATTRIBUTE_GROUPS(lm77);
/* Return 0 if detection is successful, -ENODEV otherwise */
-static int lm77_detect(struct i2c_client *new_client,
- struct i2c_board_info *info)
+static int lm77_detect(struct i2c_client *client, struct i2c_board_info *info)
{
- struct i2c_adapter *adapter = new_client->adapter;
+ struct i2c_adapter *adapter = client->adapter;
int i, cur, conf, hyst, crit, min, max;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
- /* Here comes the remaining detection. Since the LM77 has no
- register dedicated to identification, we have to rely on the
- following tricks:
-
- 1. the high 4 bits represent the sign and thus they should
- always be the same
- 2. the high 3 bits are unused in the configuration register
- 3. addresses 0x06 and 0x07 return the last read value
- 4. registers cycling over 8-address boundaries
-
- Word-sized registers are high-byte first. */
+ /*
+ * Here comes the remaining detection. Since the LM77 has no
+ * register dedicated to identification, we have to rely on the
+ * following tricks:
+ *
+ * 1. the high 4 bits represent the sign and thus they should
+ * always be the same
+ * 2. the high 3 bits are unused in the configuration register
+ * 3. addresses 0x06 and 0x07 return the last read value
+ * 4. registers cycling over 8-address boundaries
+ *
+ * Word-sized registers are high-byte first.
+ */
/* addresses cycling */
- cur = i2c_smbus_read_word_data(new_client, 0);
- conf = i2c_smbus_read_byte_data(new_client, 1);
- hyst = i2c_smbus_read_word_data(new_client, 2);
- crit = i2c_smbus_read_word_data(new_client, 3);
- min = i2c_smbus_read_word_data(new_client, 4);
- max = i2c_smbus_read_word_data(new_client, 5);
+ cur = i2c_smbus_read_word_data(client, 0);
+ conf = i2c_smbus_read_byte_data(client, 1);
+ hyst = i2c_smbus_read_word_data(client, 2);
+ crit = i2c_smbus_read_word_data(client, 3);
+ min = i2c_smbus_read_word_data(client, 4);
+ max = i2c_smbus_read_word_data(client, 5);
for (i = 8; i <= 0xff; i += 8) {
- if (i2c_smbus_read_byte_data(new_client, i + 1) != conf
- || i2c_smbus_read_word_data(new_client, i + 2) != hyst
- || i2c_smbus_read_word_data(new_client, i + 3) != crit
- || i2c_smbus_read_word_data(new_client, i + 4) != min
- || i2c_smbus_read_word_data(new_client, i + 5) != max)
+ if (i2c_smbus_read_byte_data(client, i + 1) != conf
+ || i2c_smbus_read_word_data(client, i + 2) != hyst
+ || i2c_smbus_read_word_data(client, i + 3) != crit
+ || i2c_smbus_read_word_data(client, i + 4) != min
+ || i2c_smbus_read_word_data(client, i + 5) != max)
return -ENODEV;
}
@@ -292,17 +300,17 @@ static int lm77_detect(struct i2c_client *new_client,
return -ENODEV;
/* 0x06 and 0x07 return the last read value */
- cur = i2c_smbus_read_word_data(new_client, 0);
- if (i2c_smbus_read_word_data(new_client, 6) != cur
- || i2c_smbus_read_word_data(new_client, 7) != cur)
+ cur = i2c_smbus_read_word_data(client, 0);
+ if (i2c_smbus_read_word_data(client, 6) != cur
+ || i2c_smbus_read_word_data(client, 7) != cur)
return -ENODEV;
- hyst = i2c_smbus_read_word_data(new_client, 2);
- if (i2c_smbus_read_word_data(new_client, 6) != hyst
- || i2c_smbus_read_word_data(new_client, 7) != hyst)
+ hyst = i2c_smbus_read_word_data(client, 2);
+ if (i2c_smbus_read_word_data(client, 6) != hyst
+ || i2c_smbus_read_word_data(client, 7) != hyst)
return -ENODEV;
- min = i2c_smbus_read_word_data(new_client, 4);
- if (i2c_smbus_read_word_data(new_client, 6) != min
- || i2c_smbus_read_word_data(new_client, 7) != min)
+ min = i2c_smbus_read_word_data(client, 4);
+ if (i2c_smbus_read_word_data(client, 6) != min
+ || i2c_smbus_read_word_data(client, 7) != min)
return -ENODEV;
strlcpy(info->type, "lm77", I2C_NAME_SIZE);
@@ -310,72 +318,6 @@ static int lm77_detect(struct i2c_client *new_client,
return 0;
}
-static int lm77_probe(struct i2c_client *new_client,
- const struct i2c_device_id *id)
-{
- struct lm77_data *data;
- int err;
-
- data = kzalloc(sizeof(struct lm77_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto exit;
- }
-
- i2c_set_clientdata(new_client, data);
- data->valid = 0;
- mutex_init(&data->update_lock);
-
- /* Initialize the LM77 chip */
- lm77_init_client(new_client);
-
- /* Register sysfs hooks */
- if ((err = sysfs_create_group(&new_client->dev.kobj, &lm77_group)))
- goto exit_free;
-
- data->hwmon_dev = hwmon_device_register(&new_client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto exit_remove;
- }
-
- return 0;
-
-exit_remove:
- sysfs_remove_group(&new_client->dev.kobj, &lm77_group);
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-
-static int lm77_remove(struct i2c_client *client)
-{
- struct lm77_data *data = i2c_get_clientdata(client);
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm77_group);
- kfree(data);
- return 0;
-}
-
-/* All registers are word-sized, except for the configuration register.
- The LM77 uses the high-byte first convention. */
-static u16 lm77_read_value(struct i2c_client *client, u8 reg)
-{
- if (reg == LM77_REG_CONF)
- return i2c_smbus_read_byte_data(client, reg);
- else
- return swab16(i2c_smbus_read_word_data(client, reg));
-}
-
-static int lm77_write_value(struct i2c_client *client, u8 reg, u16 value)
-{
- if (reg == LM77_REG_CONF)
- return i2c_smbus_write_byte_data(client, reg, value);
- else
- return i2c_smbus_write_word_data(client, reg, swab16(value));
-}
-
static void lm77_init_client(struct i2c_client *client)
{
/* Initialize the LM77 chip - turn off shutdown mode */
@@ -384,55 +326,47 @@ static void lm77_init_client(struct i2c_client *client)
lm77_write_value(client, LM77_REG_CONF, conf & 0xfe);
}
-static struct lm77_data *lm77_update_device(struct device *dev)
+static int lm77_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm77_data *data = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct lm77_data *data;
- mutex_lock(&data->update_lock);
+ data = devm_kzalloc(dev, sizeof(struct lm77_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
- if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
- || !data->valid) {
- dev_dbg(&client->dev, "Starting lm77 update\n");
- data->temp_input =
- LM77_TEMP_FROM_REG(lm77_read_value(client,
- LM77_REG_TEMP));
- data->temp_hyst =
- LM77_TEMP_FROM_REG(lm77_read_value(client,
- LM77_REG_TEMP_HYST));
- data->temp_crit =
- LM77_TEMP_FROM_REG(lm77_read_value(client,
- LM77_REG_TEMP_CRIT));
- data->temp_min =
- LM77_TEMP_FROM_REG(lm77_read_value(client,
- LM77_REG_TEMP_MIN));
- data->temp_max =
- LM77_TEMP_FROM_REG(lm77_read_value(client,
- LM77_REG_TEMP_MAX));
- data->alarms =
- lm77_read_value(client, LM77_REG_TEMP) & 0x0007;
- data->last_updated = jiffies;
- data->valid = 1;
- }
+ data->client = client;
+ mutex_init(&data->update_lock);
- mutex_unlock(&data->update_lock);
+ /* Initialize the LM77 chip */
+ lm77_init_client(client);
- return data;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, lm77_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
-static int __init sensors_lm77_init(void)
-{
- return i2c_add_driver(&lm77_driver);
-}
+static const struct i2c_device_id lm77_id[] = {
+ { "lm77", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm77_id);
-static void __exit sensors_lm77_exit(void)
-{
- i2c_del_driver(&lm77_driver);
-}
+/* This is the driver that will be inserted */
+static struct i2c_driver lm77_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm77",
+ },
+ .probe = lm77_probe,
+ .id_table = lm77_id,
+ .detect = lm77_detect,
+ .address_list = normal_i2c,
+};
+
+module_i2c_driver(lm77_driver);
MODULE_AUTHOR("Andras BALI <drewie@freemail.hu>");
MODULE_DESCRIPTION("LM77 driver");
MODULE_LICENSE("GPL");
-
-module_init(sensors_lm77_init);
-module_exit(sensors_lm77_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:27:00 +0000