sh: rework ipr code
This patch reworks the ipr code by grouping the offset array together
with the ipr_data structure in a new data structure called ipr_desc.
This new structure also contains the name of the controller in struct
irq_chip. The idea behind putting struct irq_chip in there is that we
can use offsetof() to locate the base addresses in the irq_chip
callbacks. This strategy has much in common with the recently merged
intc2 code.
One logic change has been made - the original ipr code enabled the
interrupts by default but with this patch they are all disabled by
default.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boards/titan/setup.c b/arch/sh/boards/titan/setup.c
index 630f62f..606d25a 100644
--- a/arch/sh/boards/titan/setup.c
+++ b/arch/sh/boards/titan/setup.c
@@ -12,7 +12,7 @@
#include <asm/titan.h>
#include <asm/io.h>
-static struct ipr_data titan_ipr_map[] = {
+static struct ipr_data ipr_irq_table[] = {
/* IRQ, IPR idx, shift, prio */
{ TITAN_IRQ_WAN, 3, 12, 8 }, /* eth0 (WAN) */
{ TITAN_IRQ_LAN, 3, 8, 8 }, /* eth1 (LAN) */
@@ -20,12 +20,30 @@
{ TITAN_IRQ_USB, 3, 0, 8 }, /* mPCI B (bottom), USB */
};
+static unsigned long ipr_offsets[] = { /* stolen from setup-sh7750.c */
+ 0xffd00004UL, /* 0: IPRA */
+ 0xffd00008UL, /* 1: IPRB */
+ 0xffd0000cUL, /* 2: IPRC */
+ 0xffd00010UL, /* 3: IPRD */
+};
+
+static struct ipr_desc ipr_irq_desc = {
+ .ipr_offsets = ipr_offsets,
+ .nr_offsets = ARRAY_SIZE(ipr_offsets),
+
+ .ipr_data = ipr_irq_table,
+ .nr_irqs = ARRAY_SIZE(ipr_irq_table),
+
+ .chip = {
+ .name = "IPR-titan",
+ },
+};
static void __init init_titan_irq(void)
{
/* enable individual interrupt mode for externals */
ipr_irq_enable_irlm();
/* register ipr irqs */
- make_ipr_irq(titan_ipr_map, ARRAY_SIZE(titan_ipr_map));
+ register_ipr_controller(&ipr_irq_desc);
}
static struct sh_machine_vector mv_titan __initmv = {