[POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2

This adds a new hardware information table for mpic. This enables
the mpic code to deal with mpic controllers with different register
layouts and hardware behaviours.

This introduces CONFIG_MPIC_WEIRD.  For boards with non standard mpic
controllers, select CONFIG_MPIC_WEIRD and add its hardware information
in the mpic_infos[] array.

TSI108/109 PIC takes the first index of weird hardware information
table.  :)  The table can be extended. The Tsi108/109 PIC looks like
standard OpenPIC but, in fact, is different in register mapping and
behavior.

The patch does not affect the behavior of standard mpic.  If
CONFIG_MPIC_WEIRD is not defined, the code is essentially identical to
the current code.

[benh@kernel.crashing.org:
This patch is a slightly cleaned up version of Zang Roy's support for
the TSI108 MPIC variant. It also fixes up MPC7448_hpc2 to use the new
version of the type macros and changes the way MPIC is selected in
Kconfig to better match what is done for other system devices.
]

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 14 insertions, 6 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index abb325eb8f75..4d4b6fb156e1 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -354,6 +354,7 @@ endchoice
 config PPC_PSERIES
         depends on PPC_MULTIPLATFORM && PPC64
         bool "IBM pSeries & new (POWER5-based) iSeries"
+        select MPIC
         select PPC_I8259
         select PPC_RTAS
         select RTAS_ERROR_LOGGING
@@ -363,6 +364,7 @@ config PPC_PSERIES
 config PPC_CHRP
         bool "Common Hardware Reference Platform (CHRP) based machines"
         depends on PPC_MULTIPLATFORM && PPC32
+        select MPIC
         select PPC_I8259
         select PPC_INDIRECT_PCI
         select PPC_RTAS
@@ -373,6 +375,7 @@ config PPC_CHRP
 config PPC_PMAC
         bool "Apple PowerMac based machines"
         depends on PPC_MULTIPLATFORM
+        select MPIC
         select PPC_INDIRECT_PCI if PPC32
         select PPC_MPC106 if PPC32
         default y
@@ -380,6 +383,7 @@ config PPC_PMAC
 config PPC_PMAC64
         bool
         depends on PPC_PMAC && POWER4
+        select MPIC
         select U3_DART
         select MPIC_BROKEN_U3
         select GENERIC_TBSYNC
@@ -389,6 +393,7 @@ config PPC_PMAC64
 config PPC_PREP
         bool "PowerPC Reference Platform (PReP) based machines"
         depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
+        select MPIC
         select PPC_I8259
         select PPC_INDIRECT_PCI
         select PPC_UDBG_16550
@@ -397,6 +402,7 @@ config PPC_PREP
 config PPC_MAPLE
         depends on PPC_MULTIPLATFORM && PPC64
         bool "Maple 970FX Evaluation Board"
+        select MPIC
         select U3_DART
         select MPIC_BROKEN_U3
         select GENERIC_TBSYNC
@@ -439,12 +445,6 @@ config U3_DART
         depends on PPC_MULTIPLATFORM && PPC64
         default n
 
-config MPIC
-        depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP \
-                               || MPC7448HPC2
-        bool
-        default y
-
 config PPC_RTAS
         bool
         default n
@@ -812,6 +812,14 @@ config GENERIC_ISA_DMA
         depends on PPC64 || POWER4 || 6xx && !CPM2
         default y
 
+config MPIC
+        bool
+        default n
+
+config MPIC_WEIRD
+        bool
+        default n
+
 config PPC_I8259
         bool
         default n