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Index: linux-2.6.27/drivers/hwmon/Kconfig
===================================================================
--- linux-2.6.27.orig/drivers/hwmon/Kconfig
+++ linux-2.6.27/drivers/hwmon/Kconfig
@@ -416,6 +416,15 @@ config SENSORS_LM70
This driver can also be built as a module. If so, the module
will be called lm70.
+config SENSORS_LM73
+ tristate "National Semiconductor LM73"
+ depends on I2C
+ help
+ If you say yes here you get support for National Semiconductor LM73
+ sensor chips
+ This driver can also be built as a module. If so, the module
+ will be called lm73.
+
config SENSORS_LM75
tristate "National Semiconductor LM75 and compatibles"
depends on I2C
Index: linux-2.6.27/drivers/hwmon/lm73.c
===================================================================
--- /dev/null
+++ linux-2.6.27/drivers/hwmon/lm73.c
@@ -0,0 +1,232 @@
+ /*
+ * LM73 Sensor driver
+ * Based on LM75
+ *
+ *
+ * Copyright (C) 2007, CenoSYS (www.cenosys.com).
+ * Guillaume Ligneul
+ * Guillaume.ligneul@gmail.com
+ *
+ * This software program is licensed subject to the GNU General Public License
+ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
+ 0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(lm73);
+
+/* LM73 registers */
+#define LM73_REG_INPUT 0x00
+#define LM73_REG_CONF 0x01
+#define LM73_REG_T_HIGH 0x02
+#define LM73_REG_T_LOW 0x03
+
+static const u8 LM73_REG_TEMP[3] = {
+ LM73_REG_INPUT, /* input */
+ LM73_REG_T_HIGH, /* max */
+ LM73_REG_T_LOW, /* min */
+};
+
+/* Each client has this additional data */
+struct lm73_data {
+ struct i2c_client client;
+ struct device *hwmon_dev;
+ struct mutex update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+ u16 temp[3]; /* Register values,
+ 0 = input
+ 1 = max
+ 2 = min */
+};
+
+static int lm73_attach_adapter(struct i2c_adapter *adapter);
+static int lm73_detect(struct i2c_adapter *adapter, int address, int kind);
+static int lm73_detach_client(struct i2c_client *client);
+static int lm73_read_value(struct i2c_client *client, u8 reg);
+static int lm73_write_value(struct i2c_client *client, u8 reg, short value);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver lm73_driver = {
+ .driver = {
+ .name = "lm73",
+ },
+ .attach_adapter = lm73_attach_adapter,
+ .detach_client = lm73_detach_client,
+};
+
+static ssize_t show_temp(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct i2c_client *client = to_i2c_client(dev);
+ int iTemp = 0;
+
+ iTemp = lm73_read_value(client, LM73_REG_TEMP[attr->index]);
+
+ return sprintf(buf, "%d\n", iTemp);
+
+
+}
+
+static ssize_t set_temp(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct i2c_client *client = to_i2c_client(dev);
+ int nr = attr->index;
+
+ long tmp = simple_strtol(buf, NULL, 10);
+
+ lm73_write_value(client, LM73_REG_TEMP[nr], tmp);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
+ show_temp, set_temp, 1);
+static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO,
+ show_temp, set_temp, 2);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
+
+static int lm73_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+
+ return i2c_probe(adapter, &addr_data, lm73_detect);
+}
+
+static struct attribute *lm73_attributes[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+
+ NULL
+};
+
+static const struct attribute_group lm73_group = {
+ .attrs = lm73_attributes,
+};
+
+/* This function is called by i2c_probe */
+static int lm73_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *new_client;
+ struct lm73_data *data;
+ int err = 0;
+ const char *name = "";
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_WORD_DATA))
+ goto exit;
+
+ if (!(data = kzalloc(sizeof(struct lm73_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ new_client = &data->client;
+ i2c_set_clientdata(new_client, data);
+ new_client->addr = address;
+ new_client->adapter = adapter;
+ new_client->driver = &lm73_driver;
+ new_client->flags = 0;
+
+ name = "lm73";
+
+ /* Fill in the remaining client fields and put it into the global list */
+ strlcpy(new_client->name, name, I2C_NAME_SIZE);
+ data->valid = 0;
+ mutex_init(&data->update_lock);
+
+ /* Tell the I2C layer a new client has arrived */
+ if ((err = i2c_attach_client(new_client)))
+ goto exit_free;
+
+ /* Register sysfs hooks */
+ if ((err = sysfs_create_group(&new_client->dev.kobj, &lm73_group)))
+ goto exit_detach;
+
+ data->hwmon_dev = hwmon_device_register(&new_client->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_remove;
+ }
+
+ return 0;
+
+exit_remove:
+ sysfs_remove_group(&new_client->dev.kobj, &lm73_group);
+exit_detach:
+ i2c_detach_client(new_client);
+exit_free:
+ kfree(data);
+exit:
+ return err;
+}
+
+static int lm73_detach_client(struct i2c_client *client)
+{
+ struct lm73_data *data = i2c_get_clientdata(client);
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &lm73_group);
+ i2c_detach_client(client);
+ kfree(data);
+ return 0;
+}
+
+static int lm73_read_value(struct i2c_client *client, u8 reg)
+{
+ short sVal;
+
+ if (reg == LM73_REG_CONF)
+ return i2c_smbus_read_byte_data(client, reg);
+ else
+ {
+ sVal = swab16(i2c_smbus_read_word_data(client, reg));
+ sVal = sVal >> 7;
+ return sVal;
+ }
+}
+
+static int lm73_write_value(struct i2c_client *client, u8 reg, short value)
+{
+ if (reg == LM73_REG_CONF)
+ return i2c_smbus_write_byte_data(client, reg, value);
+ else
+ {
+ value = value<<7;
+ return i2c_smbus_write_word_data(client, reg, swab16(value));
+ }
+}
+
+static int __init sensors_lm73_init(void)
+{
+ return i2c_add_driver(&lm73_driver);
+}
+
+static void __exit sensors_lm73_exit(void)
+{
+ i2c_del_driver(&lm73_driver);
+}
+
+MODULE_AUTHOR("Ligneul Guillaume <guillaume.ligneul@gmail.com>");
+MODULE_DESCRIPTION("LM73 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_lm73_init);
+module_exit(sensors_lm73_exit);
Index: linux-2.6.27/drivers/hwmon/Makefile
===================================================================
--- linux-2.6.27.orig/drivers/hwmon/Makefile
+++ linux-2.6.27/drivers/hwmon/Makefile
@@ -49,6 +49,7 @@ obj-$(CONFIG_SENSORS_IT87) += it87.o
obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o
obj-$(CONFIG_SENSORS_LM63) += lm63.o
obj-$(CONFIG_SENSORS_LM70) += lm70.o
+obj-$(CONFIG_SENSORS_LM73) += lm73.o
obj-$(CONFIG_SENSORS_LM75) += lm75.o
obj-$(CONFIG_SENSORS_LM77) += lm77.o
obj-$(CONFIG_SENSORS_LM78) += lm78.o
|
