From 135834c6258b0b4ee87a61d49bbc8d3869df321d Mon Sep 17 00:00:00 2001
From: Jean Delvare <khali@linux-fr.org>
Date: Sat, 15 May 2004 11:32:19 +0000
Subject: [PATCH] Detect the MAX1619.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2533 7894878c-1315-0410-8ee3-d5d059ff63e0
---
 prog/detect/sensors-detect | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/prog/detect/sensors-detect b/prog/detect/sensors-detect
index 2afc9247..b81c138f 100755
--- a/prog/detect/sensors-detect
+++ b/prog/detect/sensors-detect
@@ -819,7 +819,7 @@ use subs qw(mtp008_detect lm78_detect lm78_isa_detect lm78_alias_detect
             saa1064_detect w83l784r_detect mozart_detect max6650_detect
             fscher_detect adm1029_detect adm1031_detect max6900_detect
             m5879_detect pca9540_detect smartbatt_mgr_detect
-            smartbatt_chgr_detect adt7467_detect lm92_detect);
+            smartbatt_chgr_detect adt7467_detect lm92_detect max1619_detect);
 
 # This is a list of all recognized chips. 
 # Each entry must have the following fields:
@@ -1145,6 +1145,12 @@ use subs qw(mtp008_detect lm78_detect lm78_isa_detect lm78_alias_detect
        i2c_addrs => [0x18..0x1a,0x29..0x2b,0x4c..0x4e],
        i2c_detect => sub { adm1021_detect 7, @_ },
      },
+     {
+       name => "Maxim MAX1619",
+       driver => "to-be-written",
+       i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
+       i2c_detect => sub { max1619_detect 0, @_ },
+     },
      {
        name => "National Semiconductor LM82",
        driver => "to-be-written",
@@ -3567,6 +3573,36 @@ sub adm1021_detect
   return 5;
 }
 
+# $_[0]: Chip to detect
+#   (0 = MAX1619)
+# $_[1]: A reference to the file descriptor to access this chip.
+#        We may assume an i2c_set_slave_addr was already done.
+# $_[2]: Address
+# Returns: undef if not detected, 7 if detected
+# Registers used:
+#   0xfe: Company ID
+#   0xff: Device ID
+#   0x02: Status
+#   0x03: Configuration
+#   0x04: Conversion rate
+sub max1619_detect
+{
+  my ($chip, $file, $addr) = @_;
+  my $man_id = i2c_smbus_read_byte_data($file, 0xfe);
+  my $dev_id = i2c_smbus_read_byte_data($file, 0xff);
+  my $conf = i2c_smbus_read_byte_data($file, 0x03);
+  my $status = i2c_smbus_read_byte_data($file, 0x02);
+  my $convrate = i2c_smbus_read_byte_data($file, 0x04);
+
+  return if $man_id != 0x4D
+    or $dev_id != 0x04
+    or ($conf & 0x03)
+    or ($status & 0x61)
+    or $convrate >= 8;
+
+  return 7;
+}
+
 # $_[0]: Address
 # Returns: undef if not detected, (9) if detected.
 # Note: It is already 99% certain this chip exists if we find the PCI