Changeset 5684

Timestamp:

03/13/09 09:41:19 (4 years ago)

Author:

khali

Message:

Add Nuvoton W83795G/ADG detection. Original patch from Wei Song (Nuvoton).

Location:

lm-sensors/trunk

Files:

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

lm-sensors/trunk/CHANGES

@@ -7 +7 @@
                   Differentiate between PC8374L and WPCD377I
                   Use dmidecode to find IPMI interfaces if available
+                  Add Nuvoton W83795G/ADG detection
 
 3.1.0 "Happy Birthday Lina" (2009-02-28)

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

@@ -649 +649 @@
                 i2c_detect => sub { w83793_detect(@_); },
         }, {
+                name => "Nuvoton W83795G/ADG",
+                driver => "w83795",
+                i2c_addrs => [0x2c..0x2f],
+                i2c_detect => sub { w83795_detect(@_); },
+        }, {
                 name => "Winbond W83627HF",
                 driver => "use-isa-instead",
@@ -4357 +4362 @@
         push @res, (($reg & 0x70) >> 4) + 0x48 unless $reg & 0x80;
         return @res;
+}
+
+# Registers used:
+#   0xfc: Full I2C Address
+#   0x00: Vendor ID byte selection, and bank selection(Bank 0, 1, 2)
+#   0xfd: Vendor ID(Bank 0, 1, 2)
+#   0xfe: Device ID(Bank 0, 1, 2)
+sub w83795_detect
+{
+        my ($bank, $reg);
+        my ($file, $addr) = @_;
+
+        $bank = i2c_smbus_read_byte_data($file, 0x00);
+        $reg = i2c_smbus_read_byte_data($file, 0xfd);
+
+        return unless (($bank & 0x80) == 0x00 and $reg == 0xa3) or
+                      (($bank & 0x80) == 0x80 and $reg == 0x5c);
+
+        $reg = i2c_smbus_read_byte_data($file, 0xfe);
+        return if $reg != 0x79;
+
+        # If bank 0 is selected, we can do more checks
+        return 6 unless ($bank & 0x07) == 0;
+        $reg = i2c_smbus_read_byte_data($file, 0xfc) & 0x7f;
+        return unless ($reg == $addr);
+
+        return 8;
 }