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Commit 3d30f9e6 authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare
Browse files

hwmon: (it87) Add chassis intrusion detection support 



Add chassis intrusion detection support for all supported devices,
using the standard interface.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 764e043b

Documentation/hwmon/it87

+2 −1
Original line number Original line Diff line number Diff line
@@ -76,7 +76,8 @@ IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips. 
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,

These chips are 'Super I/O chips', supporting floppy disks, infrared ports,

joysticks and other miscellaneous stuff. For hardware monitoring, they

joysticks and other miscellaneous stuff. For hardware monitoring, they

include an 'environment controller' with 3 temperature sensors, 3 fan

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 IT8712F and IT8716F additionally feature VID inputs, used to report

the Vcore voltage of the processor. The early IT8712F have 5 VID pins,

the Vcore voltage of the processor. The early IT8712F have 5 VID pins,

drivers/hwmon/it87.c

+29 −0
Original line number Original line Diff line number Diff line
@@ -1172,6 +1172,32 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 
	struct it87_data *data = it87_update_device(dev);

	struct it87_data *data = it87_update_device(dev);

	return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);

	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(in0_alarm, S_IRUGO, show_alarm, NULL, 8);

static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);

static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);

static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);

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(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);

static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);

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(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,

static ssize_t show_beep(struct device *dev, struct device_attribute *attr,

		char *buf)

		char *buf)
@@ -1350,6 +1378,7 @@ static struct attribute *it87_attributes[] = { 
	&sensor_dev_attr_temp3_alarm.dev_attr.attr,

	&sensor_dev_attr_temp3_alarm.dev_attr.attr,





	&dev_attr_alarms.attr,

	&dev_attr_alarms.attr,

	&sensor_dev_attr_intrusion0_alarm.dev_attr.attr,

	&dev_attr_name.attr,

	&dev_attr_name.attr,

	NULL

	NULL

};

};