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path: root/drivers/hwmon/max1619.c
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Diffstat (limited to 'drivers/hwmon/max1619.c')
-rw-r--r--drivers/hwmon/max1619.c141
1 files changed, 73 insertions, 68 deletions
diff --git a/drivers/hwmon/max1619.c b/drivers/hwmon/max1619.c
index c8a729734df5..4125128898af 100644
--- a/drivers/hwmon/max1619.c
+++ b/drivers/hwmon/max1619.c
@@ -71,6 +71,16 @@ static int temp_to_reg(int val)
return (val < 0 ? val+0x100*1000 : val) / 1000;
}
+enum temp_index {
+ t_input1 = 0,
+ t_input2,
+ t_low2,
+ t_high2,
+ t_crit2,
+ t_hyst2,
+ t_num_regs
+};
+
/*
* Client data (each client gets its own)
*/
@@ -82,35 +92,39 @@ struct max1619_data {
unsigned long last_updated; /* in jiffies */
/* registers values */
- u8 temp_input1; /* local */
- u8 temp_input2, temp_low2, temp_high2; /* remote */
- u8 temp_crit2;
- u8 temp_hyst2;
+ u8 temp[t_num_regs]; /* index with enum temp_index */
u8 alarms;
};
+static const u8 regs_read[t_num_regs] = {
+ [t_input1] = MAX1619_REG_R_LOCAL_TEMP,
+ [t_input2] = MAX1619_REG_R_REMOTE_TEMP,
+ [t_low2] = MAX1619_REG_R_REMOTE_LOW,
+ [t_high2] = MAX1619_REG_R_REMOTE_HIGH,
+ [t_crit2] = MAX1619_REG_R_REMOTE_CRIT,
+ [t_hyst2] = MAX1619_REG_R_TCRIT_HYST,
+};
+
+static const u8 regs_write[t_num_regs] = {
+ [t_low2] = MAX1619_REG_W_REMOTE_LOW,
+ [t_high2] = MAX1619_REG_W_REMOTE_HIGH,
+ [t_crit2] = MAX1619_REG_W_REMOTE_CRIT,
+ [t_hyst2] = MAX1619_REG_W_TCRIT_HYST,
+};
+
static struct max1619_data *max1619_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct max1619_data *data = i2c_get_clientdata(client);
- int config;
+ int config, i;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
dev_dbg(&client->dev, "Updating max1619 data.\n");
- data->temp_input1 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_LOCAL_TEMP);
- data->temp_input2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_TEMP);
- data->temp_high2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_HIGH);
- data->temp_low2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_LOW);
- data->temp_crit2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_CRIT);
- data->temp_hyst2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_TCRIT_HYST);
+ for (i = 0; i < t_num_regs; i++)
+ data->temp[i] = i2c_smbus_read_byte_data(client,
+ regs_read[i]);
data->alarms = i2c_smbus_read_byte_data(client,
MAX1619_REG_R_STATUS);
/* If OVERT polarity is low, reverse alarm bit */
@@ -131,43 +145,33 @@ static struct max1619_data *max1619_update_device(struct device *dev)
* Sysfs stuff
*/
-#define show_temp(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, \
- char *buf) \
-{ \
- struct max1619_data *data = max1619_update_device(dev); \
- return sprintf(buf, "%d\n", temp_from_reg(data->value)); \
-}
-show_temp(temp_input1);
-show_temp(temp_input2);
-show_temp(temp_low2);
-show_temp(temp_high2);
-show_temp(temp_crit2);
-show_temp(temp_hyst2);
-
-#define set_temp2(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 max1619_data *data = i2c_get_clientdata(client); \
- long val; \
- int err = kstrtol(buf, 10, &val); \
- if (err) \
- return err; \
-\
- mutex_lock(&data->update_lock); \
- data->value = temp_to_reg(val); \
- i2c_smbus_write_byte_data(client, reg, data->value); \
- mutex_unlock(&data->update_lock); \
- return count; \
+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 max1619_data *data = max1619_update_device(dev);
+
+ return sprintf(buf, "%d\n", temp_from_reg(data->temp[attr->index]));
}
-set_temp2(temp_low2, MAX1619_REG_W_REMOTE_LOW);
-set_temp2(temp_high2, MAX1619_REG_W_REMOTE_HIGH);
-set_temp2(temp_crit2, MAX1619_REG_W_REMOTE_CRIT);
-set_temp2(temp_hyst2, MAX1619_REG_W_TCRIT_HYST);
+static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct max1619_data *data = i2c_get_clientdata(client);
+ long val;
+ int err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->temp[attr->index] = temp_to_reg(val);
+ i2c_smbus_write_byte_data(client, regs_write[attr->index],
+ data->temp[attr->index]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -184,16 +188,17 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
}
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
-static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input2, NULL);
-static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_low2,
- set_temp_low2);
-static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_high2,
- set_temp_high2);
-static DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit2,
- set_temp_crit2);
-static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst2,
- set_temp_hyst2);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, t_input1);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, t_input2);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp, set_temp,
+ t_low2);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp, set_temp,
+ t_high2);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp, set_temp,
+ t_crit2);
+static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp,
+ set_temp, t_hyst2);
+
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2);
@@ -201,12 +206,12 @@ static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4);
static struct attribute *max1619_attributes[] = {
- &dev_attr_temp1_input.attr,
- &dev_attr_temp2_input.attr,
- &dev_attr_temp2_min.attr,
- &dev_attr_temp2_max.attr,
- &dev_attr_temp2_crit.attr,
- &dev_attr_temp2_crit_hyst.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
&dev_attr_alarms.attr,
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 01:27:47 +0000