Changeset 5901 for lm-sensors/trunk/prog/detect

Timestamp:

01/14/11 17:11:54 (16 months ago)

Author:

khali

Message:

Add detection of the National Semiconductor LM94.

Files:

• lm-sensors/trunk/prog/detect/sensors-detect (modified) (3 diffs)

lm-sensors/trunk/prog/detect/sensors-detect

@@ -641 +641 @@
                 driver => "lm93",
                 i2c_addrs => [0x2c..0x2e],
-                i2c_detect => sub { lm93_detect(@_); },
+                i2c_detect => sub { lm93_detect(@_, 0); },
+        }, {
+                name => "National Semiconductor LM94",
+                driver => "to-be-written",      # Most likely lm93
+                i2c_addrs => [0x2c..0x2e],
+                i2c_detect => sub { lm93_detect(@_, 1); },
         }, {
                 name => "Winbond W83781D",
@@ -5227 +5232 @@
 }
 
+# Chip to detect: 0 = LM93, 1 = LM94
 # Registers used:
 #   0x3E: Manufacturer ID
@@ -5232 +5238 @@
 sub lm93_detect
 {
-        my ($file, $addr) = @_;
-        return unless i2c_smbus_read_byte_data($file, 0x3E) == 0x01
-                  and i2c_smbus_read_byte_data($file, 0x3F) == 0x73;
+        my ($file, $addr, $chip) = @_;
+        my ($man_id, $dev_id);
+
+        $man_id = i2c_smbus_read_byte_data($file, 0x3E);
+        $dev_id = i2c_smbus_read_byte_data($file, 0x3F);
+        
+        if ($chip == 0) {
+                return unless $man_id == 0x01   # National Semiconductor
+                          and $dev_id == 0x73;  # LM93
+        }
+        if ($chip == 1) {
+                return unless $man_id == 0x01   # National Semiconductor
+                          and $dev_id >= 0x79
+                          and $dev_id <= 0x7A;  # LM94
+        }
         return 5;
 }