[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, 1 insertions, 6 deletions

diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 93f3236b4100..8f8179b2fc38 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -513,8 +513,7 @@ void __init pxa3xx_init_irq(void)
         value |= (1 << 6);
         __asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value));
 
-        pxa_init_irq_low();
-        pxa_init_irq_high();
+        pxa_init_irq(56);
         pxa_init_irq_gpio(128);
         pxa3xx_init_irq_pm();
 }
@@ -538,10 +537,6 @@ static struct platform_device *devices[] __initdata = {
 
 static struct sys_device pxa3xx_sysdev[] = {
         {
-                .id     = 0,
-                .cls    = &pxa_irq_sysclass,
-        }, {
-                .id     = 1,
                 .cls    = &pxa_irq_sysclass,
         }, {
                 .cls    = &pxa_gpio_sysclass,