3 files changed, 29 insertions, 11 deletions

diff --git a/Documentation/hwmon/lm87 b/Documentation/hwmon/lm87
index c952c57f0e11..ec27aa1b94cb 100644
--- a/Documentation/hwmon/lm87
+++ b/Documentation/hwmon/lm87
@@ -4,8 +4,12 @@ Kernel driver lm87
 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 @@ Authors:
 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 a2187df5cc78..af43d566d770 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -433,12 +433,12 @@ config SENSORS_LM85
           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 28cdff0c556b..3ab4c3f0efdd 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 @@ static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  * Insmod parameters
  */
 
-I2C_CLIENT_INSMOD_1(lm87);
+I2C_CLIENT_INSMOD_2(lm87, adm1024);
 
 /*
  * The LM87 registers
@@ -662,6 +667,7 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
         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 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
 
         /* 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 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
         }
 
         /* 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);