diff options
| author | Joshua Scott <joshua.scott@alliedtelesis.co.nz> | 2016-09-09 08:19:25 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-09-11 02:20:23 +0300 |
| commit | feca3132d9fd9822a28f67c25051efd468174de8 (patch) | |
| tree | c455d4b33fbba8815ea30719fc2526c3ed069fa3 /drivers/hwmon | |
| parent | c7cefce03e691270c0e5e117248e14661e9c9cad (diff) | |
| download | linux-feca3132d9fd9822a28f67c25051efd468174de8.tar.xz | |
hwmon: (adt7470) Add write support to alarm_mask
Add write support for the alarm_mask. A base of 0 is provided so that
either hex or decimal can be used. The hex format when reading alarm_mask
is unchanged.
Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/adt7470.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c index 94550d79ca48..dbd758be1924 100644 --- a/drivers/hwmon/adt7470.c +++ b/drivers/hwmon/adt7470.c @@ -545,6 +545,28 @@ static ssize_t show_alarm_mask(struct device *dev, return sprintf(buf, "%x\n", data->alarms_mask); } +static ssize_t set_alarm_mask(struct device *dev, + struct device_attribute *devattr, + const char *buf, + size_t count) +{ + struct adt7470_data *data = dev_get_drvdata(dev); + long mask; + + if (kstrtoul(buf, 0, &mask)) + return -EINVAL; + + if (mask & ~0xffff) + return -EINVAL; + + mutex_lock(&data->lock); + data->alarms_mask = mask; + adt7470_write_word_data(data->client, ADT7470_REG_ALARM1_MASK, mask); + mutex_unlock(&data->lock); + + return count; +} + static ssize_t show_fan_max(struct device *dev, struct device_attribute *devattr, char *buf) @@ -989,7 +1011,8 @@ static ssize_t show_alarm(struct device *dev, return sprintf(buf, "0\n"); } -static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL); +static DEVICE_ATTR(alarm_mask, S_IWUSR | S_IRUGO, show_alarm_mask, + set_alarm_mask); 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, |