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sh: rework ipr code

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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>
This commit is contained in:
Magnus Damm
2007-06-15 18:56:19 +09:00
committed by Paul Mundt
parent 50f63f2518
commit 68abdbbb03
20 changed files with 429 additions and 326 deletions
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24
arch/sh/kernel/cpu/sh2/setup-sh7619.c
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@ -52,7 +52,7 @@ static int __init sh7619_devices_setup(void)
}
__initcall(sh7619_devices_setup);
static struct ipr_data sh7619_ipr_map[] = {
static struct ipr_data ipr_irq_table[] = {
{ 86, 0, 4, 2 }, /* CMI0 */
{ 88, 1, 12, 3 }, /* SCIF0_ERI */
{ 89, 1, 12, 3 }, /* SCIF0_RXI */
@ -68,7 +68,7 @@ static struct ipr_data sh7619_ipr_map[] = {
{ 99, 1, 4, 3 }, /* SCIF2_TXI */
};
static unsigned int ipr_offsets[] = {
static unsigned long ipr_offsets[] = {
0xf8080000, /* IPRC */
0xf8080002, /* IPRD */
0xf8080004, /* IPRE */
@ -76,15 +76,19 @@ static unsigned int ipr_offsets[] = {
0xf8080008, /* IPRG */
};
/* given the IPR index return the address of the IPR register */
unsigned int map_ipridx_to_addr(int idx)
{
if (unlikely(idx >= ARRAY_SIZE(ipr_offsets)))
return 0;
return ipr_offsets[idx];
}
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-sh7619",
},
};
void __init init_IRQ_ipr(void)
{
make_ipr_irq(sh7619_ipr_map, ARRAY_SIZE(sh7619_ipr_map));
register_ipr_controller(&ipr_irq_desc);
}