add 655 support

patch from Ken Healy <k.healy@student.ucc.ie>

This patch experimentally enables SiS 655 support by the i2c-sis645 driver.

It simply modifies the driver to also accept the SiS 655 as a valid host
bridge.

Partially tested on a Gigabyte GA-SINXP1394 (SiS655/963), no problems so far.
Driver successfully enables the SMBus controller, i2cdetect finds the usual
devices, and i2cdump successfully reads the DIMM SPD eeprom's.

The patch is against the lm_sensors-2.8.5 release.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2415 7894878c-1315-0410-8ee3-d5d059ff63e0

kernel/busses/i2c-sis645.c

@@ -30,6 +30,10 @@
     http://www2.lm-sensors.nu/~lm78/download.html
 */
 
+/*   25th March 2004
+     Support for Sis655 chipsets added by Ken Healy
+*/
+
 /*
     Note: we assume there can only be one SiS645 with one SMBus interface
 */
@@ -71,6 +75,11 @@
 #define PCI_DEVICE_ID_SI_651 0x0651
 #endif
 
+/* SiS655 north bridge (defined in 2.4.22)*/
+#ifndef PCI_DEVICE_ID_SI_655
+#define PCI_DEVICE_ID_SI_655 0x0655
+#endif
+
 /* SiS746 north bridge (defined in 2.4.21) */
 #ifndef PCI_DEVICE_ID_SI_746
 #define PCI_DEVICE_ID_SI_746 0x0746
@@ -260,6 +269,8 @@ static int __devinit sis645_hotplug_smbus(void)
 				PCI_DEVICE_ID_SI_650, NULL))
 			&& (NULL == pci_find_device(PCI_VENDOR_ID_SI,
 				PCI_DEVICE_ID_SI_651, NULL))
+			&& (NULL == pci_find_device(PCI_VENDOR_ID_SI,
+				PCI_DEVICE_ID_SI_655, NULL))
 			&& (NULL == pci_find_device(PCI_VENDOR_ID_SI,
 				PCI_DEVICE_ID_SI_735, NULL))
 			&& (NULL == pci_find_device(PCI_VENDOR_ID_SI,