MIPS: Alchemy: update core interrupt code.

This patch attempts to modernize core Alchemy interrupt handling code.

- add irq_chips for irq controllers instead of irq type,
- add a set_type() hook to change irq trigger type during runtime,
- add a set_wake() hook to control GPIO0..7 based wakeup,
- use linux' IRQF_TRIGGER_ constants instead of homebrew ones,
- enable GENERIC_HARDIRQS_NO__DO_IRQ.
- simplify plat_irq_dispatch
- merge au1xxx_irqmap into irq.c file, the only place where its
  contents are referenced.
- board_init_irq() is now mandatory for every board; use it to register
  the remaining (gpio-based) interrupt sources; update all boards
  accordingly.

Run-tested on Db1200 and other Au1200 based platforms.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 delete mode 100644 arch/mips/alchemy/common/au1xxx_irqmap.c

1 files changed, 8 insertions, 5 deletions

diff --git a/arch/mips/alchemy/devboards/pb1550/board_setup.c b/arch/mips/alchemy/devboards/pb1550/board_setup.c
index f462652..b6e9e7d 100644
--- a/arch/mips/alchemy/devboards/pb1550/board_setup.c
+++ b/arch/mips/alchemy/devboards/pb1550/board_setup.c
@@ -28,6 +28,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/interrupt.h>
 
 #include <asm/mach-au1x00/au1000.h>
 #include <asm/mach-pb1x00/pb1550.h>
@@ -41,13 +42,10 @@ char irq_tab_alchemy[][5] __initdata = {
 };
 
 struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
-	{ AU1000_GPIO_0, INTC_INT_LOW_LEVEL, 0 },
-	{ AU1000_GPIO_1, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_GPIO_0, IRQF_TRIGGER_LOW, 0 },
+	{ AU1000_GPIO_1, IRQF_TRIGGER_LOW, 0 },
 };
 
-int __initdata au1xxx_nr_irqs = ARRAY_SIZE(au1xxx_irq_map);
-
-
 const char *get_system_type(void)
 {
 	return "Alchemy Pb1550";
@@ -59,6 +57,11 @@ void board_reset(void)
 	au_writew(au_readw(0xAF00001C) & ~BCSR_SYSTEM_RESET, 0xAF00001C);
 }
 
+void __init board_init_irq(void)
+{
+	au1xxx_setup_irqmap(au1xxx_irq_map, ARRAY_SIZE(au1xxx_irq_map));
+}
+
 void __init board_setup(void)
 {
 	u32 pin_func;