[ARM] pxa: integrate low IRQ chip (ICIP) and high IRQ chip (ICIP2) into one

This makes the code better organized and simplified a bit.  The change
will lose a bit of performance when performing IRQ ack/mask/unmask,but
that's not too much after checking the result binary.

This patch also removes the ugly #ifdef CONFIG_PXA27x .. #endif by
carefully not to access those pxa{27x,3xx} specific registers, this
is done by keeping an internal IRQ number variable.  The pxa-regs.h
is also modified so registers for IRQ > PXA_IRQ(31) are made public
even if CONFIG_PXA{27x,3xx} isn't defined (for pxa25x's sake)

The incorrect assumption in the original code that internal irq starts
from 0 is also corrected by comparing with PXA_IRQ(0).

"struct sys_device" for the IRQ are reduced into one single device on
pxa{27x,3xx}.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 6 deletions

diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h
index fd81e559f15d..e659be4df3ac 100644
--- a/include/asm-arm/arch-pxa/pxa-regs.h
+++ b/include/asm-arm/arch-pxa/pxa-regs.h
@@ -1129,6 +1129,11 @@
 #define ICPR            __REG(0x40D00010)  /* Interrupt Controller Pending Register */
 #define ICCR            __REG(0x40D00014)  /* Interrupt Controller Control Register */
 
+#define ICIP2           __REG(0x40D0009C)  /* Interrupt Controller IRQ Pending Register 2 */
+#define ICMR2           __REG(0x40D000A0)  /* Interrupt Controller Mask Register 2 */
+#define ICLR2           __REG(0x40D000A4)  /* Interrupt Controller Level Register 2 */
+#define ICFP2           __REG(0x40D000A8)  /* Interrupt Controller FIQ Pending Register 2 */
+#define ICPR2           __REG(0x40D000AC)  /* Interrupt Controller Pending Register 2 */
 
 /*
  * General Purpose I/O
@@ -1200,12 +1205,6 @@
 
 /* Interrupt Controller */
 
-#define ICIP2           __REG(0x40D0009C)  /* Interrupt Controller IRQ Pending Register 2 */
-#define ICMR2           __REG(0x40D000A0)  /* Interrupt Controller Mask Register 2 */
-#define ICLR2           __REG(0x40D000A4)  /* Interrupt Controller Level Register 2 */
-#define ICFP2           __REG(0x40D000A8)  /* Interrupt Controller FIQ Pending Register 2 */
-#define ICPR2           __REG(0x40D000AC)  /* Interrupt Controller Pending Register 2 */
-
 #define _GPLR(x)        __REG2(0x40E00000, ((x) & 0x60) >> 3)
 #define _GPDR(x)        __REG2(0x40E0000C, ((x) & 0x60) >> 3)
 #define _GPSR(x)        __REG2(0x40E00018, ((x) & 0x60) >> 3)