[lm-sensors] [PATCH] thmc50: individual alarm and fault files

["Krzysztof Helt" <krzysztof.h1@wp.pl>]

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From: Krzysztof Helt <krzysztof.h1@wp.pl>

This patch adds individual alarm and fault files to
the thmc50 driver. These sysfs entries are required
for a new libsensors library.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>



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From: Krzysztof Helt <krzysztof.h1@wp.pl>

This patch adds individual alarm and fault files to
the thmc50 driver. These sysfs entries are required
for a new libsensors library.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>

---

diff -urp linux-2.6.23.old/drivers/hwmon/thmc50.c linux-2.6.23/drivers/hwmon/thmc50.c
--- linux-2.6.23.old/drivers/hwmon/thmc50.c	2007-08-02 10:21:00.000000000 +0200
+++ linux-2.6.23/drivers/hwmon/thmc50.c	2007-08-03 20:46:33.000000000 +0200
@@ -46,6 +46,11 @@ I2C_CLIENT_MODULE_PARM(adm1022_temp3, "L
 #define THMC50_REG_COMPANY_ID			0x3E
 #define THMC50_REG_DIE_CODE			0x3F
 #define THMC50_REG_ANALOG_OUT			0x19
+/*
+ * We use mirror status register for reading alarms
+ * so ACPI can use the primary status register.
+ */
+#define THMC50_REG_INTR_MIRROR			0x4C
 
 const static u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
 const static u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
@@ -69,6 +74,7 @@ struct thmc50_data {
 	s8 temp_max[3];
 	s8 temp_min[3];
 	u8 analog_out;
+	u8 alarms;
 };

 static int thmc50_attach_adapter(struct i2c_adapter *adapter);
@@ -180,13 +186,46 @@ static ssize_t set_temp_max(struct devic
 	return count;
 }
 
+static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
+			  char *buf)
+{
+	int index = to_sensor_dev_attr(attr)->index;
+	struct thmc50_data *data = thmc50_update_device(dev);
+	int alarm = data->alarms;
+
+	if (index == 1)
+		alarm >>= 5;
+	else if (index == 2)
+		alarm >>= 1;
+
+	return sprintf(buf, "%u\n", alarm & 1);
+}
+
+static ssize_t show_fault(struct device *dev, struct device_attribute *attr,
+			  char *buf)
+{
+	int index = to_sensor_dev_attr(attr)->index;
+	struct thmc50_data *data = thmc50_update_device(dev);
+	int fault = data->alarms >> 2;
+
+	if (index == 1)
+		fault >>= 5;
+
+	return sprintf(buf, "%u\n", fault & 1);
+}
+
 #define temp_reg(offset)						\
 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,	\
 			NULL, offset - 1);				\
 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,	\
 			show_temp_min, set_temp_min, offset - 1);	\
 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,	\
-			show_temp_max, set_temp_max, offset - 1);
+			show_temp_max, set_temp_max, offset - 1);	\
+static SENSOR_DEVICE_ATTR(temp##offset##_alarm, S_IRUGO,		\
+			show_alarm, NULL, offset - 1);
+
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_fault, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_fault, NULL, 2);
 
 temp_reg(1);
 temp_reg(2);
@@ -200,9 +239,12 @@ static struct attribute *thmc50_attribut
 	&sensor_dev_attr_temp1_max.dev_attr.attr,
 	&sensor_dev_attr_temp1_min.dev_attr.attr,
 	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
 	&sensor_dev_attr_temp2_max.dev_attr.attr,
 	&sensor_dev_attr_temp2_min.dev_attr.attr,
 	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_fault.dev_attr.attr,
 	&sensor_dev_attr_pwm1.dev_attr.attr,
 	&sensor_dev_attr_pwm1_mode.dev_attr.attr,
 	NULL
@@ -217,6 +259,8 @@ static struct attribute *adm1022_attribu
 	&sensor_dev_attr_temp3_max.dev_attr.attr,
 	&sensor_dev_attr_temp3_min.dev_attr.attr,
 	&sensor_dev_attr_temp3_input.dev_attr.attr,
+	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp3_fault.dev_attr.attr,
 	NULL
 };
 
@@ -414,6 +458,8 @@ static struct thmc50_data *thmc50_update
 		}
 		data->analog_out =
 		    i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
+		data->alarms =
+		    i2c_smbus_read_byte_data(client, THMC50_REG_INTR_MIRROR);
 		data->last_updated = jiffies;
 		data->valid = 1;
 	}

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