sh: intc - convert voyagergx code

This patch converts the sh-specific voyagergx interrupt code to make use
of intc. A lot of "interesting" old cruft gets replaced with intc tables
and some simple demux code.

- All interrupt sources in the sm501 data sheet are now in the header.
- The number and order of IRQ values are disconnected from register bits.
- Interrupt sources now start from IRQ 200.
- set_irq_chained_handler() is now used to hook up the demux function.

In the future it would probably make sense to move the interrupt demuxer
into into the mfd driver, but this is probably a nice step in the right
direction until that happens.

Tested on a R2D-1 board using the serial port hooked up to the sm501.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/sh/boards/renesas/rts7751r2d/irq.c b/arch/sh/boards/renesas/rts7751r2d/irq.c
index 0bae9041ace..b97c25de3a4 100644
--- a/arch/sh/boards/renesas/rts7751r2d/irq.c
+++ b/arch/sh/boards/renesas/rts7751r2d/irq.c
@@ -13,6 +13,7 @@
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <asm/voyagergx.h>
 #include <asm/rts7751r2d.h>
 
 #if defined(CONFIG_RTS7751R2D_REV11)
@@ -21,9 +22,6 @@ static int mask_pos[] = {11, 9, 8, 12, 10, 6, 5, 4, 7, 14, 13, 0, 0, 0, 0};
 static int mask_pos[] = {6, 11, 9, 8, 12, 10, 5, 4, 7, 14, 13, 0, 0, 0, 0};
 #endif
 
-extern int voyagergx_irq_demux(int irq);
-extern void setup_voyagergx_irq(void);
-
 static void enable_rts7751r2d_irq(unsigned int irq)
 {
 	/* Set priority in IPR back to original value */
@@ -39,7 +37,7 @@ static void disable_rts7751r2d_irq(unsigned int irq)
 
 int rts7751r2d_irq_demux(int irq)
 {
-	return voyagergx_irq_demux(irq);
+	return irq;
 }
 
 static struct irq_chip rts7751r2d_irq_chip __read_mostly = {