hwmon: (lm87) Add support for the Analog Devices ADM1024
It happens that the Analog Devices ADM1024 is fully compatible with
the National Semiconductor LM87, so support for the former can easily
be added to the lm87 driver.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
diff --git a/Documentation/hwmon/lm87 b/Documentation/hwmon/lm87
index c952c57..ec27aa1 100644
--- a/Documentation/hwmon/lm87
+++ b/Documentation/hwmon/lm87
@@ -4,8 +4,12 @@
Supported chips:
* National Semiconductor LM87
Prefix: 'lm87'
- Addresses scanned: I2C 0x2c - 0x2f
+ Addresses scanned: I2C 0x2c - 0x2e
Datasheet: http://www.national.com/pf/LM/LM87.html
+ * Analog Devices ADM1024
+ Prefix: 'adm1024'
+ Addresses scanned: I2C 0x2c - 0x2e
+ Datasheet: http://www.analog.com/en/prod/0,2877,ADM1024,00.html
Authors:
Frodo Looijaard <frodol@dds.nl>,
@@ -19,11 +23,12 @@
Description
-----------
-This driver implements support for the National Semiconductor LM87.
+This driver implements support for the National Semiconductor LM87
+and the Analog Devices ADM1024.
The LM87 implements up to three temperature sensors, up to two fan
rotation speed sensors, up to seven voltage sensors, alarms, and some
-miscellaneous stuff.
+miscellaneous stuff. The ADM1024 is fully compatible.
Temperatures are measured in degrees Celsius. Each input has a high
and low alarm settings. A high limit produces an alarm when the value
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index a2187df5..af43d56 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -433,12 +433,12 @@
will be called lm85.
config SENSORS_LM87
- tristate "National Semiconductor LM87"
+ tristate "National Semiconductor LM87 and compatibles"
depends on I2C
select HWMON_VID
help
If you say yes here you get support for National Semiconductor LM87
- sensor chips.
+ and Analog Devices ADM1024 sensor chips.
This driver can also be built as a module. If so, the module
will be called lm87.
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index 28cdff0..3ab4c3f 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -5,7 +5,7 @@
* Philip Edelbrock <phil@netroedge.com>
* Stephen Rousset <stephen.rousset@rocketlogix.com>
* Dan Eaton <dan.eaton@rocketlogix.com>
- * Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
+ * Copyright (C) 2004,2007 Jean Delvare <khali@linux-fr.org>
*
* Original port to Linux 2.6 by Jeff Oliver.
*
@@ -37,6 +37,11 @@
* instead. The LM87 is the only hardware monitoring chipset I know of
* which uses amplitude modulation. Be careful when using this feature.
*
+ * This driver also supports the ADM1024, a sensor chip made by Analog
+ * Devices. That chip is fully compatible with the LM87. Complete
+ * datasheet can be obtained from Analog's website at:
+ * http://www.analog.com/en/prod/0,2877,ADM1024,00.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
@@ -74,7 +79,7 @@
* Insmod parameters
*/
-I2C_CLIENT_INSMOD_1(lm87);
+I2C_CLIENT_INSMOD_2(lm87, adm1024);
/*
* The LM87 registers
@@ -662,6 +667,7 @@
struct i2c_client *new_client;
struct lm87_data *data;
int err = 0;
+ static const char *names[] = { "lm87", "adm1024" };
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto exit;
@@ -686,11 +692,18 @@
/* Now, we do the remaining detection. */
if (kind < 0) {
+ u8 cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID);
u8 rev = lm87_read_value(new_client, LM87_REG_REVISION);
- if (rev < 0x01 || rev > 0x08
- || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)
- || lm87_read_value(new_client, LM87_REG_COMPANY_ID) != 0x02) {
+ if (cid == 0x02 /* National Semiconductor */
+ && (rev >= 0x01 && rev <= 0x08))
+ kind = lm87;
+ else if (cid == 0x41 /* Analog Devices */
+ && (rev & 0xf0) == 0x10)
+ kind = adm1024;
+
+ if (kind < 0
+ || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)) {
dev_dbg(&adapter->dev,
"LM87 detection failed at 0x%02x.\n",
address);
@@ -699,7 +712,7 @@
}
/* We can fill in the remaining client fields */
- strlcpy(new_client->name, "lm87", I2C_NAME_SIZE);
+ strlcpy(new_client->name, names[kind - 1], I2C_NAME_SIZE);
data->valid = 0;
mutex_init(&data->update_lock);