diff options
| author | Jean Delvare <khali@linux-fr.org> | 2011-07-25 19:46:10 (GMT) |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-07-25 19:46:10 (GMT) |
| commit | 3d30f9e69f152d8667b3b13ac6f566e6e76ef7b9 (patch) | |
| tree | e4e71eb7a3d824a4c4289b5b81864788a905ddb6 | |
| parent | 764e043bb48b6b94f9dec228aedbd8ab08f4708b (diff) | |
| download | linux-3d30f9e69f152d8667b3b13ac6f566e6e76ef7b9.tar.xz | |
hwmon: (it87) Add chassis intrusion detection support
Add chassis intrusion detection support for all supported devices,
using the standard interface.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
| -rw-r--r-- | Documentation/hwmon/it87 | 3 | ||||
| -rw-r--r-- | drivers/hwmon/it87.c | 29 |
2 files changed, 31 insertions, 1 deletions
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87 index 38425f0..6f496a5 100644 --- a/Documentation/hwmon/it87 +++ b/Documentation/hwmon/it87 @@ -76,7 +76,8 @@ IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips. These chips are 'Super I/O chips', supporting floppy disks, infrared ports, joysticks and other miscellaneous stuff. For hardware monitoring, they include an 'environment controller' with 3 temperature sensors, 3 fan -rotation speed sensors, 8 voltage sensors, and associated alarms. +rotation speed sensors, 8 voltage sensors, associated alarms, and chassis +intrusion detection. The IT8712F and IT8716F additionally feature VID inputs, used to report the Vcore voltage of the processor. The early IT8712F have 5 VID pins, diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 5f52477..d912649 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -1172,6 +1172,32 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, struct it87_data *data = it87_update_device(dev); return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); } + +static ssize_t clear_intrusion(struct device *dev, struct device_attribute + *attr, const char *buf, size_t count) +{ + struct it87_data *data = dev_get_drvdata(dev); + long val; + int config; + + if (strict_strtol(buf, 10, &val) < 0 || val != 0) + return -EINVAL; + + mutex_lock(&data->update_lock); + config = it87_read_value(data, IT87_REG_CONFIG); + if (config < 0) { + count = config; + } else { + config |= 1 << 5; + it87_write_value(data, IT87_REG_CONFIG, config); + /* Invalidate cache to force re-read */ + data->valid = 0; + } + mutex_unlock(&data->update_lock); + + return count; +} + static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); @@ -1188,6 +1214,8 @@ static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); +static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, + show_alarm, clear_intrusion, 4); static ssize_t show_beep(struct device *dev, struct device_attribute *attr, char *buf) @@ -1350,6 +1378,7 @@ static struct attribute *it87_attributes[] = { &sensor_dev_attr_temp3_alarm.dev_attr.attr, &dev_attr_alarms.attr, + &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, &dev_attr_name.attr, NULL }; |