lm83: Add LM82 support (2.6 backport)

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@4048 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -17,6 +17,7 @@ lm_sensors CHANGES file
                    Add ICH8 support (2.6 backport)
   Module i2c-piix4: Add ServerWorks HT-1000 support (2.6 backport)
   Module i2c-viapro: Fix compilation with kernels < 2.4.21
+  Module lm83: Add LM82 support (2.6 backport)
   Module w83781d: Use real-time alarm registers when possible (2.6 backport)
   Module w83792d: Fix PWM range (2.6 backport)
   Program decode-dimms.pl: Decode depending on the memory type

README

@@ -88,7 +88,7 @@ At least the following hardware sensor chips are supported:
   Microchip TC1068, TCM1617, TCN75
   Myson MTP008
   National Semiconductor LM63, LM75, LM76, LM78, LM78-J, LM79,
-                         LM80, LM81, LM83, LM84, LM85, LM86, LM87,
+                         LM80, LM81, LM82, LM83, LM84, LM85, LM86, LM87,
                          LM89, LM90, LM92, LM93, LM99, PC87360,
                          PC87363, PC87364, PC87365, PC87366
   Philips NE1617, NE1617A, NE1619

doc/chips/SUMMARY

@@ -144,6 +144,7 @@ lm80
 
 lm83
 	lm83		4	-	-	-	yes	no
+	lm82		2	-	-	-	yes	no
 
 lm85
 	lm85		3	5	4	3 pwm	yes	no

doc/chips/lm83

@@ -9,6 +9,10 @@ Supported chips:
     Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
     Datasheet: Publicly available at the National Semiconductor website
                http://www.national.com/pf/LM/LM83.html
+  * National Semiconductor LM82
+    Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
+    Datasheet: Publicly available at the National Semiconductor website
+               http://www.national.com/pf/LM/LM82.html
 
 
 Author: Jean Delvare <khali@linux-fr.org>
@@ -38,10 +42,11 @@ Description
 -----------
 
 The LM83 is a digital temperature sensor. It senses its own temperature as
-well as the temperature of up to three external diodes. It is compatible
-with many other devices such as the LM84 and all other ADM1021 clones.
-The main difference between the LM83 and the LM84 in that the later can
-only sense the temperature of one external diode.
+well as the temperature of up to three external diodes. The LM82 is
+a stripped down version of the LM83 that only supports one external diode.
+Both are compatible with many other devices such as the LM84 and all
+other ADM1021 clones. The main difference between the LM83 and the LM84
+in that the later can only sense the temperature of one external diode.
 
 Using the adm1021 driver for a LM83 should work, but only two temperatures
 will be reported instead of four.
@@ -59,6 +64,9 @@ Unconfirmed motherboards:
     Iwill       MPX2
     Soltek      SL-75DRV5
 
+The LM82 is confirmed to have been found on most AMD Geode reference
+designs and test platforms.
+
 The driver has been successfully tested by Magnus Forsström, who I'd
 like to thank here. More testers will be of course welcome.
 

kernel/chips/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
@@ -50,7 +54,7 @@ static unsigned int normal_isa_range[] = { SENSORS_ISA_END };
  * Insmod parameters
  */
 
-SENSORS_INSMOD_1(lm83);
+SENSORS_INSMOD_2(lm83, lm82);
 
 /*
  * The LM83 registers
@@ -200,6 +204,19 @@ static ctl_table lm83_dir_table_template[] =
 	{0}
 };
 
+static ctl_table lm82_dir_table_template[] =
+{
+	{LM83_SYSCTL_LOCAL_TEMP, "temp1", NULL, 0, 0644, NULL,
+	 &i2c_proc_real, &i2c_sysctl_real, NULL, &lm83_temp},
+	{LM83_SYSCTL_REMOTE2_TEMP, "temp3", NULL, 0, 0644, NULL,
+	 &i2c_proc_real, &i2c_sysctl_real, NULL, &lm83_temp},
+	{LM83_SYSCTL_TCRIT, "tcrit", NULL, 0, 0644, NULL,
+	 &i2c_proc_real, &i2c_sysctl_real, NULL, &lm83_tcrit},
+	{LM83_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL,
+	 &i2c_proc_real, &i2c_sysctl_real, NULL, &lm83_alarms},
+	{0}
+};
+
 /*
  * Real code
  */
@@ -301,6 +318,8 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, unsigned
 		{
 			if (chip_id == 0x03)
 				kind = lm83;
+			else if (chip_id == 0x01)
+				kind = lm82;
 		}
 	}
 
@@ -315,6 +334,11 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, unsigned
 		type_name = "lm83";
 		client_name = "LM83 chip";
 	}
+	else if (kind == lm82)
+	{
+		type_name = "lm82";
+		client_name = "LM82 chip";
+	}
 	else
 	{
 		printk("lm83.o: Unknown kind %d.\n", kind);
@@ -346,8 +370,10 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, unsigned
 	 * Register a new directory entry.
 	 */
 
-	if ((err = i2c_register_entry(new_client, type_name,
-	     lm83_dir_table_template, THIS_MODULE)) < 0)
+	if ((kind == lm83 && (err = i2c_register_entry(new_client, type_name,
+	     lm83_dir_table_template, THIS_MODULE)) < 0) ||
+	    (kind == lm82 && (err = i2c_register_entry(new_client, type_name,
+	     lm82_dir_table_template, THIS_MODULE)) < 0))
 	{
 #ifdef DEBUG
 		printk("lm83.o: Failed registering directory entry.\n");

mkpatch/Config.in

@@ -36,7 +36,7 @@ if [ "$CONFIG_I2C_PROC" = "m" -o "$CONFIG_I2C_PROC" = "y" ] ; then
     dep_tristate '  National Semiconductor LM75 and compatibles' CONFIG_SENSORS_LM75 $CONFIG_I2C $CONFIG_I2C_PROC
     dep_tristate '  National Semiconductor LM78' CONFIG_SENSORS_LM78 $CONFIG_I2C $CONFIG_I2C_PROC
     dep_tristate '  National Semiconductor LM80' CONFIG_SENSORS_LM80 $CONFIG_I2C $CONFIG_I2C_PROC
-    dep_tristate '  National Semiconductor LM83' CONFIG_SENSORS_LM83 $CONFIG_I2C $CONFIG_I2C_PROC
+    dep_tristate '  National Semiconductor LM83 and compatibles' CONFIG_SENSORS_LM83 $CONFIG_I2C $CONFIG_I2C_PROC
     dep_tristate '  National Semiconductor LM85, Analog Devices ADM1027' CONFIG_SENSORS_LM85 $CONFIG_I2C $CONFIG_I2C_PROC
     dep_tristate '  National Semiconductor LM87' CONFIG_SENSORS_LM87 $CONFIG_I2C $CONFIG_I2C_PROC
     dep_tristate '  National Semiconductor LM90 and compatibles' CONFIG_SENSORS_LM90 $CONFIG_I2C $CONFIG_I2C_PROC

mkpatch/mkpatch.pl

@@ -538,10 +538,10 @@ CONFIG_SENSORS_LM80
   in the lm_sensors package, which you can download at
   http://www.lm-sensors.nu/
 
-National Semiconductor LM83
+National Semiconductor LM83 and compatibles
 CONFIG_SENSORS_LM83
   If you say yes here you get support for the National Semiconductor
-  LM83 sensor chip.  This can also be built as a module.
+  LM82 and LM83 sensor chips.  This can also be built as a module.
 
   You will also need the latest user-space utilities: you can find
   them in the lm_sensors package, which you can download at