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, 5 insertions, 13 deletions

diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h
index 0d302bad449..a7ba35247c8 100644
--- a/arch/mips/include/asm/mach-au1x00/au1000.h
+++ b/arch/mips/include/asm/mach-au1x00/au1000.h
@@ -109,10 +109,11 @@ struct au1xxx_irqmap {
 	int	im_request;
 };
 
-/*
- * init_IRQ looks for a table with this name.
- */
-extern struct au1xxx_irqmap au1xxx_irq_map[];
+/* core calls this function to let boards initialize other IRQ sources */
+void board_init_irq(void);
+
+/* boards call this to register additional (GPIO) interrupts */
+void au1xxx_setup_irqmap(struct au1xxx_irqmap *map, int count);
 
 #endif /* !defined (_LANGUAGE_ASSEMBLY) */
 
@@ -505,15 +506,6 @@ extern struct au1xxx_irqmap au1xxx_irq_map[];
 
 #define IC1_TESTBIT		0xB1800080
 
-/* Interrupt Configuration Modes */
-#define INTC_INT_DISABLED		0x0
-#define INTC_INT_RISE_EDGE		0x1
-#define INTC_INT_FALL_EDGE		0x2
-#define INTC_INT_RISE_AND_FALL_EDGE	0x3
-#define INTC_INT_HIGH_LEVEL		0x5
-#define INTC_INT_LOW_LEVEL		0x6
-#define INTC_INT_HIGH_AND_LOW_LEVEL	0x7
-
 /* Interrupt Numbers */
 /* Au1000 */
 #ifdef CONFIG_SOC_AU1000