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path: root/drivers/hwmon
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Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/w83792d.c56
1 files changed, 29 insertions, 27 deletions
diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c
index 958602e2841..6cdef18b1b2 100644
--- a/drivers/hwmon/w83792d.c
+++ b/drivers/hwmon/w83792d.c
@@ -250,8 +250,6 @@ FAN_TO_REG(long rpm, int div)
: (val)) / 1000, 0, 0xff))
#define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
-#define PWM_FROM_REG(val) (val)
-#define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))
#define DIV_FROM_REG(val) (1 << (val))
static inline u8
@@ -291,7 +289,6 @@ struct w83792d_data {
u8 pwm[7]; /* We only consider the first 3 set of pwm,
although 792 chip has 7 set of pwm. */
u8 pwmenable[3];
- u8 pwm_mode[7]; /* indicates PWM or DC mode: 1->PWM; 0->DC */
u32 alarms; /* realtime status register encoding,combined */
u8 chassis; /* Chassis status */
u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
@@ -627,7 +624,7 @@ show_pwm(struct device *dev, struct device_attribute *attr,
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
- return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
+ return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
}
static ssize_t
@@ -659,14 +656,16 @@ store_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
- int nr = sensor_attr->index - 1;
+ int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
- u32 val;
+ u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
- val = simple_strtoul(buf, NULL, 10);
- data->pwm[nr] = PWM_TO_REG(val);
+ mutex_lock(&data->update_lock);
+ val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
+ data->pwm[nr] = val;
w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -707,9 +706,9 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
}
static struct sensor_device_attribute sda_pwm[] = {
- SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
- SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
- SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
+ SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
+ SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
+ SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
};
static struct sensor_device_attribute sda_pwm_enable[] = {
SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
@@ -728,7 +727,7 @@ show_pwm_mode(struct device *dev, struct device_attribute *attr,
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
- return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
+ return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
}
static ssize_t
@@ -736,29 +735,35 @@ store_pwm_mode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
- int nr = sensor_attr->index - 1;
+ int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
- u8 pwm_mode_mask = 0;
val = simple_strtoul(buf, NULL, 10);
- data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
- pwm_mode_mask = w83792d_read_value(client,
- W83792D_REG_PWM[nr]) & 0x7f;
- w83792d_write_value(client, W83792D_REG_PWM[nr],
- ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
+ if (val != 0 && val != 1)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
+ if (val) { /* PWM mode */
+ data->pwm[nr] |= 0x80;
+ } else { /* DC mode */
+ data->pwm[nr] &= 0x7f;
+ }
+ w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
+ mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute sda_pwm_mode[] = {
SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
- show_pwm_mode, store_pwm_mode, 1),
+ show_pwm_mode, store_pwm_mode, 0),
SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
- show_pwm_mode, store_pwm_mode, 2),
+ show_pwm_mode, store_pwm_mode, 1),
SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
- show_pwm_mode, store_pwm_mode, 3),
+ show_pwm_mode, store_pwm_mode, 2),
};
@@ -1373,7 +1378,7 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
int i, j;
- u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
+ u8 reg_array_tmp[4], reg_tmp;
mutex_lock(&data->update_lock);
@@ -1402,10 +1407,8 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
data->fan_min[i] = w83792d_read_value(client,
W83792D_REG_FAN_MIN[i]);
/* Update the PWM/DC Value and PWM/DC flag */
- pwm_array_tmp[i] = w83792d_read_value(client,
+ data->pwm[i] = w83792d_read_value(client,
W83792D_REG_PWM[i]);
- data->pwm[i] = pwm_array_tmp[i] & 0x0f;
- data->pwm_mode[i] = pwm_array_tmp[i] >> 7;
}
reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
@@ -1513,7 +1516,6 @@ static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
dev_dbg(dev, "pwm[%d] is: 0x%x\n", i, data->pwm[i]);
- dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
}
dev_dbg(dev, "3 set of Temperatures: =====>\n");
for (i=0; i<3; i++) {