hwmon: Add support for Winbond W83L786NG/NR

[sfrench/cifs-2.6.git] / drivers / hwmon / thmc50.c

diff --git a/drivers/hwmon/thmc50.c b/drivers/hwmon/thmc50.c
index 9395b52d9b99260498e64d5cf3af2bc24df96121..04dd7699b3ac7c1735ecb82d58c45f941637c3b1 100644 (file)
--- a/drivers/hwmon/thmc50.c
+++ b/drivers/hwmon/thmc50.c
@@ -46,6 +46,11 @@ I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs "
 #define THMC50_REG_COMPANY_ID                  0x3E
 #define THMC50_REG_DIE_CODE                    0x3F
 #define THMC50_REG_ANALOG_OUT                  0x19
+/*
+ * The mirror status register cannot be used as
+ * reading it does not clear alarms.
+ */
+#define THMC50_REG_INTR                                0x41
 
 const static u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
 const static u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
@@ -56,7 +61,7 @@ const static u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
 /* Each client has this additional data */
 struct thmc50_data {
        struct i2c_client client;
-       struct class_device *class_dev;
+       struct device *hwmon_dev;
 
        struct mutex update_lock;
        enum chips type;
@@ -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);
@@ -180,6 +186,15 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
        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);
+
+       return sprintf(buf, "%u\n", (data->alarms >> index) & 1);
+}
+
 #define temp_reg(offset)                                               \
 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,    \
                        NULL, offset - 1);                              \
@@ -192,6 +207,12 @@ temp_reg(1);
 temp_reg(2);
 temp_reg(3);
 
+static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 7);
+static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 2);
+
 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_analog_out,
                          set_analog_out, 0);
 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0);
@@ -200,9 +221,12 @@ static struct attribute *thmc50_attributes[] = {
        &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
@@ -213,15 +237,17 @@ static const struct attribute_group thmc50_group = {
 };
 
 /* for ADM1022 3rd temperature mode */
-static struct attribute *adm1022_attributes[] = {
+static struct attribute *temp3_attributes[] = {
        &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
 };
 
-static const struct attribute_group adm1022_group = {
-       .attrs = adm1022_attributes,
+static const struct attribute_group temp3_group = {
+       .attrs = temp3_attributes,
 };
 
 static int thmc50_detect(struct i2c_adapter *adapter, int address, int kind)
@@ -233,7 +259,7 @@ static int thmc50_detect(struct i2c_adapter *adapter, int address, int kind)
        struct thmc50_data *data;
        struct device *dev;
        int err = 0;
-       const char *type_name = "";
+       const char *type_name;
 
        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
                pr_debug("thmc50: detect failed, "
@@ -283,13 +309,9 @@ static int thmc50_detect(struct i2c_adapter *adapter, int address, int kind)
                pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n");
                goto exit_free;
        }
-       pr_debug("thmc50: Detected %s (version %x, revision %x)\n",
-                type_name, (revision >> 4) - 0xc, revision & 0xf);
        data->type = kind;
 
-       if (kind == thmc50)
-               type_name = "thmc50";
-       else if (kind == adm1022) {
+       if (kind == adm1022) {
                int id = i2c_adapter_id(client->adapter);
                int i;
 
@@ -302,7 +324,11 @@ static int thmc50_detect(struct i2c_adapter *adapter, int address, int kind)
                                data->has_temp3 = 1;
                                break;
                        }
+       } else {
+               type_name = "thmc50";
        }
+       pr_debug("thmc50: Detected %s (version %x, revision %x)\n",
+                type_name, (revision >> 4) - 0xc, revision & 0xf);
 
        /* Fill in the remaining client fields & put it into the global list */
        strlcpy(client->name, type_name, I2C_NAME_SIZE);
@@ -319,23 +345,23 @@ static int thmc50_detect(struct i2c_adapter *adapter, int address, int kind)
                goto exit_detach;
 
        /* Register ADM1022 sysfs hooks */
-       if (data->type == adm1022)
+       if (data->has_temp3)
                if ((err = sysfs_create_group(&client->dev.kobj,
-                                             &adm1022_group)))
+                                             &temp3_group)))
                        goto exit_remove_sysfs_thmc50;
 
        /* Register a new directory entry with module sensors */
-       data->class_dev = hwmon_device_register(&client->dev);
-       if (IS_ERR(data->class_dev)) {
-               err = PTR_ERR(data->class_dev);
+       data->hwmon_dev = hwmon_device_register(&client->dev);
+       if (IS_ERR(data->hwmon_dev)) {
+               err = PTR_ERR(data->hwmon_dev);
                goto exit_remove_sysfs;
        }
 
        return 0;
 
 exit_remove_sysfs:
-       if (data->type == adm1022)
-               sysfs_remove_group(&client->dev.kobj, &adm1022_group);
+       if (data->has_temp3)
+               sysfs_remove_group(&client->dev.kobj, &temp3_group);
 exit_remove_sysfs_thmc50:
        sysfs_remove_group(&client->dev.kobj, &thmc50_group);
 exit_detach:
@@ -358,10 +384,10 @@ static int thmc50_detach_client(struct i2c_client *client)
        struct thmc50_data *data = i2c_get_clientdata(client);
        int err;
 
-       hwmon_device_unregister(data->class_dev);
+       hwmon_device_unregister(data->hwmon_dev);
        sysfs_remove_group(&client->dev.kobj, &thmc50_group);
-       if (data->type == adm1022)
-               sysfs_remove_group(&client->dev.kobj, &adm1022_group);
+       if (data->has_temp3)
+               sysfs_remove_group(&client->dev.kobj, &temp3_group);
 
        if ((err = i2c_detach_client(client)))
                return err;
@@ -414,6 +440,8 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
                }
                data->analog_out =
                    i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
+               data->alarms =
+                   i2c_smbus_read_byte_data(client, THMC50_REG_INTR);
                data->last_updated = jiffies;
                data->valid = 1;
        }