Changeset 5779

Timestamp:

10/03/09 12:38:14 (4 years ago)

Author:

khali

Message:

Add detection for National Semiconductor LM73.

Location:

lm-sensors/trunk

Files:

• CHANGES (modified) (1 diff)
• prog/detect/sensors-detect (modified) (2 diffs)

lm-sensors/trunk/CHANGES

@@ -19 +19 @@
                   Add detection for AMD Family 11h thermal sensors
                   Add detection for Intel Atom thermal sensors
+                  Add detection for National Semiconductor LM73
   sysconfig-lm_sensors-convert: Fix exit code
 

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

@@ -949 +949 @@
                 i2c_detect => sub { lm63_detect(@_, 2); },
         }, {
+                name => "National Semiconductor LM73",
+                driver => "lm73",
+                i2c_addrs => [0x48..0x4a, 0x4c..0x4e],
+                i2c_detect => sub { lm73_detect(@_); },
+        }, {
                 name => "National Semiconductor LM92",
                 driver => "lm92",
@@ -3583 +3588 @@
         return 6 if $cur <= 100 and ($hyst >= 10 && $hyst <= 125)
                 and ($os >= 20 && $os <= 127) and $hyst < $os;
+        return 3;
+}
+
+# Registers used:
+#   0x00: Temperature
+#   0x01: Configuration
+#   0x02: High Limit
+#   0x03: Low Limit
+#   0x04: Status
+#   0x07: Manufacturer ID and Product ID
+sub lm73_detect
+{
+        my ($file, $addr) = @_;
+
+        my $conf = i2c_smbus_read_byte_data($file, 0x01);
+        my $status = i2c_smbus_read_byte_data($file, 0x04);
+
+        # Bits that always return 0
+        return if ($conf & 0x0c) or ($status & 0x10);
+
+        return if i2c_smbus_read_word_data($file, 0x07) != 0x9001;
+
+        # Make sure the chip supports SMBus read word transactions
+        my $cur = i2c_smbus_read_word_data($file, 0x00);
+        return if $cur < 0;
+        my $high = i2c_smbus_read_word_data($file, 0x02);
+        return if $high < 0;
+        my $low = i2c_smbus_read_word_data($file, 0x03);
+        return if $low < 0;
+        return if ($cur & 0x0300) or (($high | $low) & 0x1f00);
+
         return 3;
 }