#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
u8 vrm;
};
-/*
- * Internal variables
- */
-
-static int lm87_id;
-
/*
* Sysfs stuff
*/
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]);
lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) :
LM87_REG_AIN_MIN(nr-6), data->in_min[nr]);
+ up(&data->update_lock);
}
static void set_in_max(struct device *dev, const char *buf, int nr)
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]);
lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) :
LM87_REG_AIN_MAX(nr-6), data->in_max[nr]);
+ up(&data->update_lock);
}
#define set_in(offset) \
static void set_temp_low(struct device *dev, const char *buf, int nr)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm87_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
- data->temp_low[nr] = TEMP_TO_REG(val);
- lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm87_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->temp_low[nr] = TEMP_TO_REG(val);
+ lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]);
+ up(&data->update_lock);
}
static void set_temp_high(struct device *dev, const char *buf, int nr)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm87_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
- data->temp_high[nr] = TEMP_TO_REG(val);
- lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm87_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->temp_high[nr] = TEMP_TO_REG(val);
+ lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]);
+ up(&data->update_lock);
}
#define set_temp(offset) \
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
data->fan_min[nr] = FAN_TO_REG(val,
FAN_DIV_FROM_REG(data->fan_div[nr]));
lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]);
+ up(&data->update_lock);
}
/* Note: we save and restore the fan minimum here, because its value is
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- unsigned long min = FAN_FROM_REG(data->fan_min[nr],
- FAN_DIV_FROM_REG(data->fan_div[nr]));
+ unsigned long min;
u8 reg;
+ down(&data->update_lock);
+ min = FAN_FROM_REG(data->fan_min[nr],
+ FAN_DIV_FROM_REG(data->fan_div[nr]));
+
switch (val) {
case 1: data->fan_div[nr] = 0; break;
case 2: data->fan_div[nr] = 1; break;
case 4: data->fan_div[nr] = 2; break;
case 8: data->fan_div[nr] = 3; break;
- default: return -EINVAL;
+ default:
+ up(&data->update_lock);
+ return -EINVAL;
}
reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV);
data->fan_min[nr] = FAN_TO_REG(min, val);
lm87_write_value(client, LM87_REG_FAN_MIN(nr),
data->fan_min[nr]);
+ up(&data->update_lock);
+
return count;
}
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
data->aout = AOUT_TO_REG(val);
lm87_write_value(client, LM87_REG_AOUT, data->aout);
+ up(&data->update_lock);
return count;
}
static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
/* We can fill in the remaining client fields */
strlcpy(new_client->name, "lm87", I2C_NAME_SIZE);
- new_client->id = lm87_id++;
data->valid = 0;
init_MUTEX(&data->update_lock);
down(&data->update_lock);
- if (jiffies - data->last_updated > HZ
- || jiffies < data->last_updated
- || !data->valid) {
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
int i, j;
dev_dbg(&client->dev, "Updating data.\n");