#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/log2.h>
+#include <linux/kthread.h>
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
/* Insmod parameters */
I2C_CLIENT_INSMOD_1(adt7470);
#define ADT7470_REG_CFG 0x40
#define ADT7470_FSPD_MASK 0x04
#define ADT7470_REG_ALARM1 0x41
+#define ADT7470_R1T_ALARM 0x01
+#define ADT7470_R2T_ALARM 0x02
+#define ADT7470_R3T_ALARM 0x04
+#define ADT7470_R4T_ALARM 0x08
+#define ADT7470_R5T_ALARM 0x10
+#define ADT7470_R6T_ALARM 0x20
+#define ADT7470_R7T_ALARM 0x40
+#define ADT7470_OOL_ALARM 0x80
#define ADT7470_REG_ALARM2 0x42
+#define ADT7470_R8T_ALARM 0x01
+#define ADT7470_R9T_ALARM 0x02
+#define ADT7470_R10T_ALARM 0x04
+#define ADT7470_FAN1_ALARM 0x10
+#define ADT7470_FAN2_ALARM 0x20
+#define ADT7470_FAN3_ALARM 0x40
+#define ADT7470_FAN4_ALARM 0x80
#define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
#define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
#define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
#define ADT7470_REG_PWM12_CFG 0x68
#define ADT7470_PWM2_AUTO_MASK 0x40
#define ADT7470_PWM1_AUTO_MASK 0x80
+#define ADT7470_PWM_AUTO_MASK 0xC0
#define ADT7470_REG_PWM34_CFG 0x69
#define ADT7470_PWM3_AUTO_MASK 0x40
#define ADT7470_PWM4_AUTO_MASK 0x80
#define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
((x) / 2))
+#define ALARM2(x) ((x) << 8)
+
#define ADT7470_VENDOR 0x41
#define ADT7470_DEVICE 0x70
/* datasheet only mentions a revision 2 */
/* How often do we reread sensor limit values? (In jiffies) */
#define LIMIT_REFRESH_INTERVAL (60 * HZ)
-/* sleep 1s while gathering temperature data */
-#define TEMP_COLLECTION_TIME 1000
+/* Wait at least 200ms per sensor for 10 sensors */
+#define TEMP_COLLECTION_TIME 2000
-#define power_of_2(x) (((x) & ((x) - 1)) == 0)
+/* auto update thing won't fire more than every 2s */
+#define AUTO_UPDATE_INTERVAL 2000
/* datasheet says to divide this number by the fan reading to get fan rpm */
#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
struct adt7470_data {
- struct i2c_client client;
struct device *hwmon_dev;
struct attribute_group attrs;
struct mutex lock;
unsigned long sensors_last_updated; /* In jiffies */
unsigned long limits_last_updated; /* In jiffies */
+ int num_temp_sensors; /* -1 = probe */
+ int temperatures_probed;
+
s8 temp[ADT7470_TEMP_COUNT];
s8 temp_min[ADT7470_TEMP_COUNT];
s8 temp_max[ADT7470_TEMP_COUNT];
u16 fan[ADT7470_FAN_COUNT];
u16 fan_min[ADT7470_FAN_COUNT];
u16 fan_max[ADT7470_FAN_COUNT];
- u16 alarms, alarms_mask;
+ u16 alarm;
+ u16 alarms_mask;
u8 force_pwm_max;
u8 pwm[ADT7470_PWM_COUNT];
u8 pwm_max[ADT7470_PWM_COUNT];
u8 pwm_min[ADT7470_PWM_COUNT];
s8 pwm_tmin[ADT7470_PWM_COUNT];
u8 pwm_auto_temp[ADT7470_PWM_COUNT];
+
+ struct task_struct *auto_update;
+ struct completion auto_update_stop;
+ unsigned int auto_update_interval;
};
-static int adt7470_attach_adapter(struct i2c_adapter *adapter);
-static int adt7470_detect(struct i2c_adapter *adapter, int address, int kind);
-static int adt7470_detach_client(struct i2c_client *client);
+static int adt7470_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int adt7470_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
+static int adt7470_remove(struct i2c_client *client);
+
+static const struct i2c_device_id adt7470_id[] = {
+ { "adt7470", adt7470 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adt7470_id);
static struct i2c_driver adt7470_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "adt7470",
},
- .attach_adapter = adt7470_attach_adapter,
- .detach_client = adt7470_detach_client,
+ .probe = adt7470_probe,
+ .remove = adt7470_remove,
+ .id_table = adt7470_id,
+ .detect = adt7470_detect,
+ .address_data = &addr_data,
};
/*
}
}
-static struct adt7470_data *adt7470_update_device(struct device *dev)
+/* Probe for temperature sensors. Assumes lock is held */
+static int adt7470_read_temperatures(struct i2c_client *client,
+ struct adt7470_data *data)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7470_data *data = i2c_get_clientdata(client);
- unsigned long local_jiffies = jiffies;
- u8 cfg;
+ unsigned long res;
int i;
+ u8 cfg, pwm[4], pwm_cfg[2];
- mutex_lock(&data->lock);
- if (time_before(local_jiffies, data->sensors_last_updated +
- SENSOR_REFRESH_INTERVAL)
- && data->sensors_valid)
- goto no_sensor_update;
+ /* save pwm[1-4] config register */
+ pwm_cfg[0] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(0));
+ pwm_cfg[1] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(2));
+
+ /* set manual pwm to whatever it is set to now */
+ for (i = 0; i < ADT7470_FAN_COUNT; i++)
+ pwm[i] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM(i));
+
+ /* put pwm in manual mode */
+ i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0),
+ pwm_cfg[0] & ~(ADT7470_PWM_AUTO_MASK));
+ i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2),
+ pwm_cfg[1] & ~(ADT7470_PWM_AUTO_MASK));
+
+ /* write pwm control to whatever it was */
+ for (i = 0; i < ADT7470_FAN_COUNT; i++)
+ i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(i), pwm[i]);
/* start reading temperature sensors */
cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
cfg |= 0x80;
i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
- /*
- * Delay is 200ms * number of tmp05 sensors. Too bad
- * there's no way to figure out how many are connected.
- * For now, assume 1s will work.
- */
- msleep(TEMP_COLLECTION_TIME);
+ /* Delay is 200ms * number of temp sensors. */
+ res = msleep_interruptible((data->num_temp_sensors >= 0 ?
+ data->num_temp_sensors * 200 :
+ TEMP_COLLECTION_TIME));
/* done reading temperature sensors */
cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
cfg &= ~0x80;
i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
- for (i = 0; i < ADT7470_TEMP_COUNT; i++)
+ /* restore pwm[1-4] config registers */
+ i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]);
+ i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]);
+
+ if (res) {
+ printk(KERN_ERR "ha ha, interrupted");
+ return -EAGAIN;
+ }
+
+ /* Only count fans if we have to */
+ if (data->num_temp_sensors >= 0)
+ return 0;
+
+ for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
data->temp[i] = i2c_smbus_read_byte_data(client,
ADT7470_TEMP_REG(i));
+ if (data->temp[i])
+ data->num_temp_sensors = i + 1;
+ }
+ data->temperatures_probed = 1;
+ return 0;
+}
+
+static int adt7470_update_thread(void *p)
+{
+ struct i2c_client *client = p;
+ struct adt7470_data *data = i2c_get_clientdata(client);
+
+ while (!kthread_should_stop()) {
+ mutex_lock(&data->lock);
+ adt7470_read_temperatures(client, data);
+ mutex_unlock(&data->lock);
+ if (kthread_should_stop())
+ break;
+ msleep_interruptible(data->auto_update_interval);
+ }
+
+ complete_all(&data->auto_update_stop);
+ return 0;
+}
+
+static struct adt7470_data *adt7470_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7470_data *data = i2c_get_clientdata(client);
+ unsigned long local_jiffies = jiffies;
+ u8 cfg;
+ int i;
+ int need_sensors = 1;
+ int need_limits = 1;
+
+ /*
+ * Figure out if we need to update the shadow registers.
+ * Lockless means that we may occasionally report out of
+ * date data.
+ */
+ if (time_before(local_jiffies, data->sensors_last_updated +
+ SENSOR_REFRESH_INTERVAL) &&
+ data->sensors_valid)
+ need_sensors = 0;
+
+ if (time_before(local_jiffies, data->limits_last_updated +
+ LIMIT_REFRESH_INTERVAL) &&
+ data->limits_valid)
+ need_limits = 0;
+
+ if (!need_sensors && !need_limits)
+ return data;
+
+ mutex_lock(&data->lock);
+ if (!need_sensors)
+ goto no_sensor_update;
+
+ if (!data->temperatures_probed)
+ adt7470_read_temperatures(client, data);
+ else
+ for (i = 0; i < ADT7470_TEMP_COUNT; i++)
+ data->temp[i] = i2c_smbus_read_byte_data(client,
+ ADT7470_TEMP_REG(i));
for (i = 0; i < ADT7470_FAN_COUNT; i++)
data->fan[i] = adt7470_read_word_data(client,
else
data->force_pwm_max = 0;
- data->alarms = adt7470_read_word_data(client, ADT7470_REG_ALARM1);
+ data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1);
+ if (data->alarm & ADT7470_OOL_ALARM)
+ data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
+ ADT7470_REG_ALARM2));
data->alarms_mask = adt7470_read_word_data(client,
ADT7470_REG_ALARM1_MASK);
data->sensors_valid = 1;
no_sensor_update:
- if (time_before(local_jiffies, data->limits_last_updated +
- LIMIT_REFRESH_INTERVAL)
- && data->limits_valid)
+ if (!need_limits)
goto out;
for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
return data;
}
+static ssize_t show_auto_update_interval(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct adt7470_data *data = adt7470_update_device(dev);
+ return sprintf(buf, "%d\n", data->auto_update_interval);
+}
+
+static ssize_t set_auto_update_interval(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf,
+ size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7470_data *data = i2c_get_clientdata(client);
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = SENSORS_LIMIT(temp, 0, 60000);
+
+ mutex_lock(&data->lock);
+ data->auto_update_interval = temp;
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t show_num_temp_sensors(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct adt7470_data *data = adt7470_update_device(dev);
+ return sprintf(buf, "%d\n", data->num_temp_sensors);
+}
+
+static ssize_t set_num_temp_sensors(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf,
+ size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7470_data *data = i2c_get_clientdata(client);
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = SENSORS_LIMIT(temp, -1, 10);
+
+ mutex_lock(&data->lock);
+ data->num_temp_sensors = temp;
+ if (temp < 0)
+ data->temperatures_probed = 0;
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
static ssize_t show_temp_min(struct device *dev,
struct device_attribute *devattr,
char *buf)
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10) / 1000;
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = DIV_ROUND_CLOSEST(temp, 1000);
+ temp = SENSORS_LIMIT(temp, 0, 255);
mutex_lock(&data->lock);
data->temp_min[attr->index] = temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10) / 1000;
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = DIV_ROUND_CLOSEST(temp, 1000);
+ temp = SENSORS_LIMIT(temp, 0, 255);
mutex_lock(&data->lock);
data->temp_max[attr->index] = temp;
return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
}
-static ssize_t show_alarms(struct device *dev,
+static ssize_t show_alarm_mask(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adt7470_data *data = adt7470_update_device(dev);
- if (attr->index)
- return sprintf(buf, "%x\n", data->alarms);
- else
- return sprintf(buf, "%x\n", data->alarms_mask);
+ return sprintf(buf, "%x\n", data->alarms_mask);
}
static ssize_t show_fan_max(struct device *dev,
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
+ long temp;
- if (!temp)
+ if (strict_strtol(buf, 10, &temp) || !temp)
return -EINVAL;
+
temp = FAN_RPM_TO_PERIOD(temp);
+ temp = SENSORS_LIMIT(temp, 1, 65534);
mutex_lock(&data->lock);
data->fan_max[attr->index] = temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
+ long temp;
- if (!temp)
+ if (strict_strtol(buf, 10, &temp) || !temp)
return -EINVAL;
+
temp = FAN_RPM_TO_PERIOD(temp);
+ temp = SENSORS_LIMIT(temp, 1, 65534);
mutex_lock(&data->lock);
data->fan_min[attr->index] = temp;
{
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
+ long temp;
u8 reg;
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
mutex_lock(&data->lock);
data->force_pwm_max = temp;
reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = SENSORS_LIMIT(temp, 0, 255);
mutex_lock(&data->lock);
data->pwm[attr->index] = temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = SENSORS_LIMIT(temp, 0, 255);
mutex_lock(&data->lock);
data->pwm_max[attr->index] = temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = SENSORS_LIMIT(temp, 0, 255);
mutex_lock(&data->lock);
data->pwm_min[attr->index] = temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10) / 1000;
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = DIV_ROUND_CLOSEST(temp, 1000);
+ temp = SENSORS_LIMIT(temp, 0, 255);
mutex_lock(&data->lock);
data->pwm_tmin[attr->index] = temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = simple_strtol(buf, NULL, 10);
int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
int pwm_auto_reg_mask;
+ long temp;
u8 reg;
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
if (attr->index % 2)
pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
else
{
if (input == ADT7470_PWM_ALL_TEMPS)
return 0;
- if (input < 1 || !power_of_2(input))
+ if (input < 1 || !is_power_of_2(input))
return -EINVAL;
return ilog2(input) + 1;
}
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct adt7470_data *data = i2c_get_clientdata(client);
- int temp = cvt_auto_temp(simple_strtol(buf, NULL, 10));
int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
+ long temp;
u8 reg;
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = cvt_auto_temp(temp);
if (temp < 0)
return temp;
return count;
}
-static SENSOR_DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL, 0);
-static SENSOR_DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarms, NULL, 1);
+static ssize_t show_alarm(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct adt7470_data *data = adt7470_update_device(dev);
+
+ if (data->alarm & attr->index)
+ return sprintf(buf, "1\n");
+ else
+ return sprintf(buf, "0\n");
+}
+
+static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL);
+static DEVICE_ATTR(num_temp_sensors, S_IWUSR | S_IRUGO, show_num_temp_sensors,
+ set_num_temp_sensors);
+static DEVICE_ATTR(auto_update_interval, S_IWUSR | S_IRUGO,
+ show_auto_update_interval, set_auto_update_interval);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
set_temp_max, 0);
static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
+static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R1T_ALARM);
+static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R2T_ALARM);
+static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R3T_ALARM);
+static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R4T_ALARM);
+static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R5T_ALARM);
+static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R6T_ALARM);
+static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R7T_ALARM);
+static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_R8T_ALARM));
+static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_R9T_ALARM));
+static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_R10T_ALARM));
+
static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
set_fan_max, 0);
static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
+static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN1_ALARM));
+static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN2_ALARM));
+static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN3_ALARM));
+static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN4_ALARM));
+
static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
show_force_pwm_max, set_force_pwm_max, 0);
static struct attribute *adt7470_attr[] =
{
- &sensor_dev_attr_alarms.dev_attr.attr,
- &sensor_dev_attr_alarm_mask.dev_attr.attr,
+ &dev_attr_alarm_mask.attr,
+ &dev_attr_num_temp_sensors.attr,
+ &dev_attr_auto_update_interval.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp8_input.dev_attr.attr,
&sensor_dev_attr_temp9_input.dev_attr.attr,
&sensor_dev_attr_temp10_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp6_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp7_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp8_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp9_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp10_alarm.dev_attr.attr,
&sensor_dev_attr_fan1_max.dev_attr.attr,
&sensor_dev_attr_fan2_max.dev_attr.attr,
&sensor_dev_attr_fan3_max.dev_attr.attr,
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan4_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan3_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_force_pwm_max.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
NULL
};
-static int adt7470_attach_adapter(struct i2c_adapter *adapter)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int adt7470_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, adt7470_detect);
-}
-
-static int adt7470_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *client;
- struct adt7470_data *data;
- int err = 0;
+ struct i2c_adapter *adapter = client->adapter;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- if (!(data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
-
- client = &data->client;
- client->addr = address;
- client->adapter = adapter;
- client->driver = &adt7470_driver;
-
- i2c_set_clientdata(client, data);
-
- mutex_init(&data->lock);
+ return -ENODEV;
if (kind <= 0) {
int vendor, device, revision;
vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR);
- if (vendor != ADT7470_VENDOR) {
- err = -ENODEV;
- goto exit_free;
- }
+ if (vendor != ADT7470_VENDOR)
+ return -ENODEV;
device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE);
- if (device != ADT7470_DEVICE) {
- err = -ENODEV;
- goto exit_free;
- }
+ if (device != ADT7470_DEVICE)
+ return -ENODEV;
revision = i2c_smbus_read_byte_data(client,
ADT7470_REG_REVISION);
- if (revision != ADT7470_REVISION) {
- err = -ENODEV;
- goto exit_free;
- }
+ if (revision != ADT7470_REVISION)
+ return -ENODEV;
} else
dev_dbg(&adapter->dev, "detection forced\n");
- strlcpy(client->name, "adt7470", I2C_NAME_SIZE);
+ strlcpy(info->type, "adt7470", I2C_NAME_SIZE);
- if ((err = i2c_attach_client(client)))
- goto exit_free;
+ return 0;
+}
+
+static int adt7470_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct adt7470_data *data;
+ int err;
+
+ data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ data->num_temp_sensors = -1;
+ data->auto_update_interval = AUTO_UPDATE_INTERVAL;
+
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->lock);
dev_info(&client->dev, "%s chip found\n", client->name);
/* Register sysfs hooks */
data->attrs.attrs = adt7470_attr;
if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
- goto exit_detach;
+ goto exit_free;
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
goto exit_remove;
}
+ init_completion(&data->auto_update_stop);
+ data->auto_update = kthread_run(adt7470_update_thread, client,
+ dev_name(data->hwmon_dev));
+ if (IS_ERR(data->auto_update))
+ goto exit_unregister;
+
return 0;
+exit_unregister:
+ hwmon_device_unregister(data->hwmon_dev);
exit_remove:
sysfs_remove_group(&client->dev.kobj, &data->attrs);
-exit_detach:
- i2c_detach_client(client);
exit_free:
kfree(data);
exit:
return err;
}
-static int adt7470_detach_client(struct i2c_client *client)
+static int adt7470_remove(struct i2c_client *client)
{
struct adt7470_data *data = i2c_get_clientdata(client);
+ kthread_stop(data->auto_update);
+ wait_for_completion(&data->auto_update_stop);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &data->attrs);
- i2c_detach_client(client);
kfree(data);
return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff