edac: add CPC925 Memory Controller driver

Introduce IBM CPC925 EDAC driver, which makes use of ECC, CPU and
HyperTransport Link error detections and corrections on the IBM
CPC925 Bridge and Memory Controller.

[[email protected]: cleanup]
Signed-off-by: Harry Ciao <[email protected]>
Cc: Doug Thompson <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Paul Mackerras <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: qcao-zz

drivers/edac/Kconfig

@@ -232,4 +232,13 @@ config EDAC_AMD8111
 	  Note, add more Kconfig dependency if it's adopted
 	  on some machine other than Maple.
 
+config EDAC_CPC925
+	tristate "IBM CPC925 Memory Controller (PPC970FX)"
+	depends on EDAC_MM_EDAC && PPC64
+	help
+	  Support for error detection and correction on the
+	  IBM CPC925 Bridge and Memory Controller, which is
+	  a companion chip to the PowerPC 970 family of
+	  processors.
+
 endif # EDAC

drivers/edac/Makefile

@@ -18,6 +18,7 @@ edac_core-objs	+= edac_pci.o edac_pci_sysfs.o
 endif
 
 obj-$(CONFIG_EDAC_AMD76X)		+= amd76x_edac.o
+obj-$(CONFIG_EDAC_CPC925)		+= cpc925_edac.o
 obj-$(CONFIG_EDAC_I5000)		+= i5000_edac.o
 obj-$(CONFIG_EDAC_I5100)		+= i5100_edac.o
 obj-$(CONFIG_EDAC_I5400)		+= i5400_edac.o