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/shmin/setup.c b/arch/sh/boards/shmin/setup.c
index 9c8bb51..dfd1245 100644
--- a/arch/sh/boards/shmin/setup.c
+++ b/arch/sh/boards/shmin/setup.c
@@ -6,28 +6,44 @@
* SHMIN Support.
*/
#include <linux/init.h>
+#include <linux/irq.h>
#include <asm/machvec.h>
#include <asm/shmin.h>
#include <asm/clock.h>
-#include <asm/irq.h>
#include <asm/io.h>
#define PFC_PHCR 0xa400010eUL
#define INTC_ICR1 0xa4000010UL
#define INTC_IPRC 0xa4000016UL
-static struct ipr_data shmin_ipr_map[] = {
- { .irq=32, .addr=INTC_IPRC, .shift= 0, .priority=0 },
- { .irq=33, .addr=INTC_IPRC, .shift= 4, .priority=0 },
- { .irq=34, .addr=INTC_IPRC, .shift= 8, .priority=8 },
- { .irq=35, .addr=INTC_IPRC, .shift=12, .priority=0 },
+static struct ipr_data ipr_irq_table[] = {
+ { 32, 0, 0, 0 },
+ { 33, 0, 4, 0 },
+ { 34, 0, 8, 8 },
+ { 35, 0, 12, 0 },
+};
+
+static unsigned long ipr_offsets[] = {
+ INTC_IPRC,
+};
+
+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-shmin",
+ },
};
static void __init init_shmin_irq(void)
{
ctrl_outw(0x2a00, PFC_PHCR); // IRQ0-3=IRQ
ctrl_outw(0x0aaa, INTC_ICR1); // IRQ0-3=IRQ-mode,Low-active.
- make_ipr_irq(shmin_ipr_map, ARRAY_SIZE(shmin_ipr_map));
+ register_ipr_controller(&ipr_irq_desc);
}
static void __iomem *shmin_ioport_map(unsigned long port, unsigned int size)