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authorJordan Crouse <jordan.crouse@amd.com>2007-02-26 00:43:46 +0100
committerAdrian Bunk <bunk@stusta.de>2007-02-26 00:43:46 +0100
commit189dca0e119f7d69d35bce7ac31232c9f6747148 (patch)
tree812a55dbf42d7e759c3ab534393015e86983cde7 /drivers
parent164ef61c84ac388a4534392ea60eb80190ad5184 (diff)
hwmon lm83: Add LM82 support
Add LM82 temperature sensor support (similar to the LM83, but less featureful). Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Adrian Bunk <bunk@stusta.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hwmon/Kconfig4
-rw-r--r--drivers/hwmon/lm83.c50
2 files changed, 39 insertions, 15 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 428fdd0e5517..b061895b4993 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -248,11 +248,11 @@ config SENSORS_LM80
will be called lm80.
config SENSORS_LM83
- tristate "National Semiconductor LM83"
+ tristate "National Semiconductor LM83 and compatibles"
depends on HWMON && I2C
help
If you say yes here you get support for National Semiconductor
- LM83 sensor chips.
+ LM82 and LM83 sensor chips.
This driver can also be built as a module. If so, the module
will be called lm83.
diff --git a/drivers/hwmon/lm83.c b/drivers/hwmon/lm83.c
index 26dfa9e216c2..af4c96049429 100644
--- a/drivers/hwmon/lm83.c
+++ b/drivers/hwmon/lm83.c
@@ -12,6 +12,10 @@
* Since the datasheet omits to give the chip stepping code, I give it
* here: 0x03 (at register 0xff).
*
+ * Also supports the LM82 temp sensor, which is basically a stripped down
+ * model of the LM83. Datasheet is here:
+ * http://www.national.com/pf/LM/LM82.html
+ *
* 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
@@ -51,7 +55,7 @@ static unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a,
* Insmod parameters
*/
-I2C_CLIENT_INSMOD_1(lm83);
+I2C_CLIENT_INSMOD_2(lm83, lm82);
/*
* The LM83 registers
@@ -282,6 +286,9 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
if (man_id == 0x01) { /* National Semiconductor */
if (chip_id == 0x03) {
kind = lm83;
+ } else
+ if (chip_id == 0x01) {
+ kind = lm82;
}
}
@@ -295,6 +302,9 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
if (kind == lm83) {
name = "lm83";
+ } else
+ if (kind == lm82) {
+ name = "lm82";
}
/* We can fill in the remaining client fields */
@@ -318,32 +328,46 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
goto exit_detach;
}
+ /*
+ * The LM82 can only monitor one external diode which is
+ * at the same register as the LM83 temp3 entry - so we
+ * declare 1 and 3 common, and then 2 and 4 only for the LM83.
+ */
+
device_create_file(&new_client->dev,
&sensor_dev_attr_temp1_input.dev_attr);
device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_input.dev_attr);
- device_create_file(&new_client->dev,
&sensor_dev_attr_temp3_input.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_input.dev_attr);
+
device_create_file(&new_client->dev,
&sensor_dev_attr_temp1_max.dev_attr);
device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_max.dev_attr);
- device_create_file(&new_client->dev,
&sensor_dev_attr_temp3_max.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_max.dev_attr);
+
device_create_file(&new_client->dev,
&sensor_dev_attr_temp1_crit.dev_attr);
device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_crit.dev_attr);
- device_create_file(&new_client->dev,
&sensor_dev_attr_temp3_crit.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_crit.dev_attr);
+
device_create_file(&new_client->dev, &dev_attr_alarms);
+ if (kind == lm83) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp4_input.dev_attr);
+
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp4_max.dev_attr);
+
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_crit.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp4_crit.dev_attr);
+ }
+
return 0;
exit_detach: