From c2b81edc8a7ab7ec4b8d92efd3cf49d45f1d8b85 Mon Sep 17 00:00:00 2001
From: "Mark D. Studebaker" <mdsxyz123@yahoo.com>
Date: Fri, 19 Jan 2001 02:39:26 +0000
Subject: [PATCH] recognize lm78's with chipid register (0x49) == 0x20, as     
  reported by Vernon McPherron <vernon@xnote.com>

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@998 7894878c-1315-0410-8ee3-d5d059ff63e0
---
 CHANGES                    | 6 ++++--
 kernel/chips/lm78.c        | 2 +-
 prog/detect/sensors-detect | 4 ++--
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/CHANGES b/CHANGES
index 0d104588..f9569181 100644
--- a/CHANGES
+++ b/CHANGES
@@ -18,8 +18,10 @@ ask CVS about it:
 -----------------------------------------------------------------------------
 
 2.5.6 (2001????)
-  Module sensors: add xxx_init() calls for drivers added to mkpatch in 2.5.5.
-  Program mkpatch.pl: fix adm9240 typos
+  Module lm78: Recognize chipid=0x20
+  Module sensors: Add xxx_init() calls for drivers added to mkpatch in 2.5.5.
+  Program mkpatch.pl: Fix adm9240 typos
+  Program sensors-detect: Recognize lm78 with chipid=0x20
 
 2.5.5 (20010115)
   NOTE: i2c 2.5.5 MUST BE be compiled and installed first, UNLESS
diff --git a/kernel/chips/lm78.c b/kernel/chips/lm78.c
index 6d3d87e4..046dedb5 100644
--- a/kernel/chips/lm78.c
+++ b/kernel/chips/lm78.c
@@ -389,7 +389,7 @@ int lm78_detect(struct i2c_adapter *adapter, int address,
 	/* Determine the chip type. */
 	if (kind <= 0) {
 		i = lm78_read_value(new_client, LM78_REG_CHIPID);
-		if (i == 0x00)
+		if (i == 0x00 || i == 0x20)
 			kind = lm78;
 		else if (i == 0x40)
 			kind = lm78j;
diff --git a/prog/detect/sensors-detect b/prog/detect/sensors-detect
index 3af84c3d..7a387c09 100755
--- a/prog/detect/sensors-detect
+++ b/prog/detect/sensors-detect
@@ -1503,7 +1503,7 @@ sub lm78_detect
   return unless i2c_smbus_read_byte_data($file,0x48) == $addr;
   return unless (i2c_smbus_read_byte_data($file,0x40) & 0x80) == 0x00;
   $reg = i2c_smbus_read_byte_data($file,0x49);
-  return unless ($chip == 0 and $reg == 0x00) or
+  return unless ($chip == 0 and ($reg == 0x00 or $reg == 0x20)) or
                     ($chip == 1 and $reg == 0x40) or
                     ($chip == 2 and ($reg & 0xfe) == 0xc0);
   return (7);
@@ -1529,7 +1529,7 @@ sub lm78_isa_detect
   my $readproc = sub { isa_read_byte $addr + 5, $addr + 6, @_ };
   return unless (&$readproc(0x40) & 0x80) == 0x00;
   my $reg = &$readproc(0x49);
-  return unless ($chip == 0 and $reg == 0x00) or
+  return unless ($chip == 0 and ($reg == 0x00 or $reg == 0x20)) or
                 ($chip == 1 and $reg == 0x40) or
                 ($chip == 2 and ($reg & 0xfe) == 0xc0);
   return 7;