1 files changed, 142 insertions, 129 deletions

diff --git a/drivers/hwmon/thmc50.c b/drivers/hwmon/thmc50.c
index 76a3859c3fb..db288db7d3e 100644
--- a/drivers/hwmon/thmc50.c
+++ b/drivers/hwmon/thmc50.c
@@ -1,24 +1,24 @@
 /*
-    thmc50.c - Part of lm_sensors, Linux kernel modules for hardware
-             monitoring
-    Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
-    Based on 2.4 driver by Frodo Looijaard <frodol@dds.nl> and
-    Philip Edelbrock <phil@netroedge.com>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+ * thmc50.c - Part of lm_sensors, Linux kernel modules for hardware
+ *	      monitoring
+ * Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
+ * Based on 2.4 driver by Frodo Looijaard <frodol@dds.nl> and
+ * Philip Edelbrock <phil@netroedge.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
 
 #include <linux/module.h>
 #include <linux/init.h>
@@ -28,6 +28,7 @@
 #include <linux/hwmon-sysfs.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
+#include <linux/jiffies.h>
 
 MODULE_LICENSE("GPL");
 
@@ -35,9 +36,13 @@ MODULE_LICENSE("GPL");
 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 
 /* Insmod parameters */
-I2C_CLIENT_INSMOD_2(thmc50, adm1022);
-I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs "
-			"to enable 3rd temperature (ADM1022 only)");
+enum chips { thmc50, adm1022 };
+
+static unsigned short adm1022_temp3[16];
+static unsigned int adm1022_temp3_num;
+module_param_array(adm1022_temp3, ushort, &adm1022_temp3_num, 0);
+MODULE_PARM_DESC(adm1022_temp3,
+		 "List of adapter,address pairs to enable 3rd temperature (ADM1022 only)");
 
 /* Many THMC50 constants specified below */
 
@@ -55,12 +60,14 @@ I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs "
 static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
 static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
 static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
+static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 };
+static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 };
 
 #define THMC50_REG_CONF_nFANOFF			0x20
+#define THMC50_REG_CONF_PROGRAMMED		0x08
 
 /* Each client has this additional data */
 struct thmc50_data {
-	struct i2c_client client;
 	struct device *hwmon_dev;
 
 	struct mutex update_lock;
@@ -73,21 +80,36 @@ struct thmc50_data {
 	s8 temp_input[3];
 	s8 temp_max[3];
 	s8 temp_min[3];
+	s8 temp_critical[3];
 	u8 analog_out;
 	u8 alarms;
 };
 
-static int thmc50_attach_adapter(struct i2c_adapter *adapter);
-static int thmc50_detach_client(struct i2c_client *client);
+static int thmc50_detect(struct i2c_client *client,
+			 struct i2c_board_info *info);
+static int thmc50_probe(struct i2c_client *client,
+			const struct i2c_device_id *id);
+static int thmc50_remove(struct i2c_client *client);
 static void thmc50_init_client(struct i2c_client *client);
 static struct thmc50_data *thmc50_update_device(struct device *dev);
 
+static const struct i2c_device_id thmc50_id[] = {
+	{ "adm1022", adm1022 },
+	{ "thmc50", thmc50 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, thmc50_id);
+
 static struct i2c_driver thmc50_driver = {
+	.class = I2C_CLASS_HWMON,
 	.driver = {
 		.name = "thmc50",
 	},
-	.attach_adapter = thmc50_attach_adapter,
-	.detach_client = thmc50_detach_client,
+	.probe = thmc50_probe,
+	.remove = thmc50_remove,
+	.id_table = thmc50_id,
+	.detect = thmc50_detect,
+	.address_list = normal_i2c,
 };
 
 static ssize_t show_analog_out(struct device *dev,
@@ -103,11 +125,16 @@ static ssize_t set_analog_out(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct thmc50_data *data = i2c_get_clientdata(client);
-	int tmp = simple_strtoul(buf, NULL, 10);
 	int config;
+	unsigned long tmp;
+	int err;
+
+	err = kstrtoul(buf, 10, &tmp);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	data->analog_out = SENSORS_LIMIT(tmp, 0, 255);
+	data->analog_out = clamp_val(tmp, 0, 255);
 	i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
 				  data->analog_out);
 
@@ -152,10 +179,15 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
 	int nr = to_sensor_dev_attr(attr)->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct thmc50_data *data = i2c_get_clientdata(client);
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	data->temp_min[nr] = SENSORS_LIMIT(val / 1000, -128, 127);
+	data->temp_min[nr] = clamp_val(val / 1000, -128, 127);
 	i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MIN[nr],
 				  data->temp_min[nr]);
 	mutex_unlock(&data->update_lock);
@@ -176,16 +208,30 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 	int nr = to_sensor_dev_attr(attr)->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct thmc50_data *data = i2c_get_clientdata(client);
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	data->temp_max[nr] = SENSORS_LIMIT(val / 1000, -128, 127);
+	data->temp_max[nr] = clamp_val(val / 1000, -128, 127);
 	i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MAX[nr],
 				  data->temp_max[nr]);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
 
+static ssize_t show_temp_critical(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	int nr = to_sensor_dev_attr(attr)->index;
+	struct thmc50_data *data = thmc50_update_device(dev);
+	return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000);
+}
+
 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
 			  char *buf)
 {
@@ -201,7 +247,9 @@ static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,	\
 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##_crit, S_IRUGO,			\
+			show_temp_critical, NULL, offset - 1);
 
 temp_reg(1);
 temp_reg(2);
@@ -221,10 +269,12 @@ 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_crit.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_crit.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,
@@ -241,6 +291,7 @@ 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_crit.dev_attr.attr,
 	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
 	&sensor_dev_attr_temp3_fault.dev_attr.attr,
 	NULL
@@ -250,105 +301,88 @@ static const struct attribute_group temp3_group = {
 	.attrs = temp3_attributes,
 };
 
-static int thmc50_detect(struct i2c_adapter *adapter, int address, int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int thmc50_detect(struct i2c_client *client,
+			 struct i2c_board_info *info)
 {
 	unsigned company;
 	unsigned revision;
 	unsigned config;
-	struct i2c_client *client;
-	struct thmc50_data *data;
-	struct device *dev;
-	int err = 0;
+	struct i2c_adapter *adapter = client->adapter;
 	const char *type_name;
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
-		pr_debug("thmc50: detect failed, "
-			 "smbus byte data not supported!\n");
-		goto exit;
-	}
-
-	/* OK. For now, we presume we have a valid client. We now create the
-	   client structure, even though we cannot fill it completely yet.
-	   But it allows us to access thmc50 registers. */
-	if (!(data = kzalloc(sizeof(struct thmc50_data), GFP_KERNEL))) {
-		pr_debug("thmc50: detect failed, kzalloc failed!\n");
-		err = -ENOMEM;
-		goto exit;
+		pr_debug("thmc50: detect failed, smbus byte data not supported!\n");
+		return -ENODEV;
 	}
 
-	client = &data->client;
-	i2c_set_clientdata(client, data);
-	client->addr = address;
-	client->adapter = adapter;
-	client->driver = &thmc50_driver;
-	dev = &client->dev;
-
 	pr_debug("thmc50: Probing for THMC50 at 0x%2X on bus %d\n",
 		 client->addr, i2c_adapter_id(client->adapter));
 
-	/* Now, we do the remaining detection. */
 	company = i2c_smbus_read_byte_data(client, THMC50_REG_COMPANY_ID);
 	revision = i2c_smbus_read_byte_data(client, THMC50_REG_DIE_CODE);
 	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
+	if (revision < 0xc0 || (config & 0x10))
+		return -ENODEV;
 
-	if (kind == 0)
-		kind = thmc50;
-	else if (kind < 0) {
-		err = -ENODEV;
-		if (revision >= 0xc0 && ((config & 0x10) == 0)) {
-			if (company == 0x49) {
-				kind = thmc50;
-				err = 0;
-			} else if (company == 0x41) {
-				kind = adm1022;
-				err = 0;
-			}
-		}
-	}
-	if (err == -ENODEV) {
-		pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n");
-		goto exit_free;
-	}
-	data->type = kind;
-
-	if (kind == adm1022) {
+	if (company == 0x41) {
 		int id = i2c_adapter_id(client->adapter);
 		int i;
 
 		type_name = "adm1022";
-		data->has_temp3 = (config >> 7) & 1;	/* config MSB */
 		for (i = 0; i + 1 < adm1022_temp3_num; i += 2)
 			if (adm1022_temp3[i] == id &&
-			    adm1022_temp3[i + 1] == address) {
+			    adm1022_temp3[i + 1] == client->addr) {
 				/* enable 2nd remote temp */
-				data->has_temp3 = 1;
+				config |= (1 << 7);
+				i2c_smbus_write_byte_data(client,
+							  THMC50_REG_CONF,
+							  config);
 				break;
 			}
-	} else {
+	} else if (company == 0x49) {
 		type_name = "thmc50";
+	} else {
+		pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n");
+		return -ENODEV;
 	}
+
 	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);
-	mutex_init(&data->update_lock);
+	strlcpy(info->type, type_name, I2C_NAME_SIZE);
+
+	return 0;
+}
+
+static int thmc50_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct thmc50_data *data;
+	int err;
+
+	data = devm_kzalloc(&client->dev, sizeof(struct thmc50_data),
+			    GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
 
-	/* Tell the I2C layer a new client has arrived */
-	if ((err = i2c_attach_client(client)))
-		goto exit_free;
+	i2c_set_clientdata(client, data);
+	data->type = id->driver_data;
+	mutex_init(&data->update_lock);
 
 	thmc50_init_client(client);
 
 	/* Register sysfs hooks */
-	if ((err = sysfs_create_group(&client->dev.kobj, &thmc50_group)))
-		goto exit_detach;
+	err = sysfs_create_group(&client->dev.kobj, &thmc50_group);
+	if (err)
+		return err;
 
 	/* Register ADM1022 sysfs hooks */
-	if (data->has_temp3)
-		if ((err = sysfs_create_group(&client->dev.kobj,
-					      &temp3_group)))
+	if (data->has_temp3) {
+		err = sysfs_create_group(&client->dev.kobj, &temp3_group);
+		if (err)
 			goto exit_remove_sysfs_thmc50;
+	}
 
 	/* Register a new directory entry with module sensors */
 	data->hwmon_dev = hwmon_device_register(&client->dev);
@@ -364,36 +398,18 @@ exit_remove_sysfs:
 		sysfs_remove_group(&client->dev.kobj, &temp3_group);
 exit_remove_sysfs_thmc50:
 	sysfs_remove_group(&client->dev.kobj, &thmc50_group);
-exit_detach:
-	i2c_detach_client(client);
-exit_free:
-	kfree(data);
-exit:
 	return err;
 }
 
-static int thmc50_attach_adapter(struct i2c_adapter *adapter)
-{
-	if (!(adapter->class & I2C_CLASS_HWMON))
-		return 0;
-	return i2c_probe(adapter, &addr_data, thmc50_detect);
-}
-
-static int thmc50_detach_client(struct i2c_client *client)
+static int thmc50_remove(struct i2c_client *client)
 {
 	struct thmc50_data *data = i2c_get_clientdata(client);
-	int err;
 
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &thmc50_group);
 	if (data->has_temp3)
 		sysfs_remove_group(&client->dev.kobj, &temp3_group);
 
-	if ((err = i2c_detach_client(client)))
-		return err;
-
-	kfree(data);
-
 	return 0;
 }
 
@@ -412,8 +428,8 @@ static void thmc50_init_client(struct i2c_client *client)
 	}
 	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
 	config |= 0x1;	/* start the chip if it is in standby mode */
-	if (data->has_temp3)
-		config |= 0x80;		/* enable 2nd remote temp */
+	if (data->type == adm1022 && (config & (1 << 7)))
+		data->has_temp3 = 1;
 	i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);
 }
 
@@ -430,6 +446,10 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
 
 		int temps = data->has_temp3 ? 3 : 2;
 		int i;
+		int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
+
+		prog &= THMC50_REG_CONF_PROGRAMMED;
+
 		for (i = 0; i < temps; i++) {
 			data->temp_input[i] = i2c_smbus_read_byte_data(client,
 						THMC50_REG_TEMP[i]);
@@ -437,6 +457,10 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
 						THMC50_REG_TEMP_MAX[i]);
 			data->temp_min[i] = i2c_smbus_read_byte_data(client,
 						THMC50_REG_TEMP_MIN[i]);
+			data->temp_critical[i] =
+				i2c_smbus_read_byte_data(client,
+					prog ? THMC50_REG_TEMP_CRITICAL[i]
+					     : THMC50_REG_TEMP_DEFAULT[i]);
 		}
 		data->analog_out =
 		    i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
@@ -451,18 +475,7 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
 	return data;
 }
 
-static int __init sm_thmc50_init(void)
-{
-	return i2c_add_driver(&thmc50_driver);
-}
-
-static void __exit sm_thmc50_exit(void)
-{
-	i2c_del_driver(&thmc50_driver);
-}
+module_i2c_driver(thmc50_driver);
 
 MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
 MODULE_DESCRIPTION("THMC50 driver");
-
-module_init(sm_thmc50_init);
-module_exit(sm_thmc50_exit);