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Diffstat (limited to 'arch/mips/au1000/common/irq.c')
-rw-r--r--arch/mips/au1000/common/irq.c105
1 files changed, 57 insertions, 48 deletions
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index d1eb5a4a9a1..1339a0979f6 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -83,7 +83,7 @@ inline void local_disable_irq(unsigned int irq_nr);
void (*board_init_irq)(void);
#ifdef CONFIG_PM
-extern void counter0_irq(int irq, void *dev_id, struct pt_regs *regs);
+extern irqreturn_t counter0_irq(int irq, void *dev_id, struct pt_regs *regs);
#endif
static DEFINE_SPINLOCK(irq_lock);
@@ -253,52 +253,72 @@ void restore_local_and_enable(int controller, unsigned long mask)
static struct hw_interrupt_type rise_edge_irq_type = {
- "Au1000 Rise Edge",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_rise_edge_irq,
- end_irq,
- NULL
+ .typename = "Au1000 Rise Edge",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_rise_edge_irq,
+ .end = end_irq,
};
static struct hw_interrupt_type fall_edge_irq_type = {
- "Au1000 Fall Edge",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_fall_edge_irq,
- end_irq,
- NULL
+ .typename = "Au1000 Fall Edge",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_fall_edge_irq,
+ .end = end_irq,
};
static struct hw_interrupt_type either_edge_irq_type = {
- "Au1000 Rise or Fall Edge",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_either_edge_irq,
- end_irq,
- NULL
+ .typename = "Au1000 Rise or Fall Edge",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_either_edge_irq,
+ .end = end_irq,
};
static struct hw_interrupt_type level_irq_type = {
- "Au1000 Level",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_level_irq,
- end_irq,
- NULL
+ .typename = "Au1000 Level",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_level_irq,
+ .end = end_irq,
};
#ifdef CONFIG_PM
-void startup_match20_interrupt(void)
+void startup_match20_interrupt(irqreturn_t (*handler)(int, void *, struct pt_regs *))
{
+ struct irq_desc *desc = &irq_desc[AU1000_TOY_MATCH2_INT];
+
+ static struct irqaction action;
+ memset(&action, 0, sizeof(struct irqaction));
+
+ /* This is a big problem.... since we didn't use request_irq
+ * when kernel/irq.c calls probe_irq_xxx this interrupt will
+ * be probed for usage. This will end up disabling the device :(
+ * Give it a bogus "action" pointer -- this will keep it from
+ * getting auto-probed!
+ *
+ * By setting the status to match that of request_irq() we
+ * can avoid it. --cgray
+ */
+ action.dev_id = handler;
+ action.flags = SA_INTERRUPT;
+ cpus_clear(action.mask);
+ action.name = "Au1xxx TOY";
+ action.handler = handler;
+ action.next = NULL;
+
+ desc->action = &action;
+ desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT | IRQ_WAITING | IRQ_INPROGRESS);
+
local_enable_irq(AU1000_TOY_MATCH2_INT);
}
#endif
@@ -426,7 +446,6 @@ void __init arch_init_irq(void)
extern int au1xxx_ic0_nr_irqs;
cp0_status = read_c0_status();
- memset(irq_desc, 0, sizeof(irq_desc));
set_except_vector(0, au1000_IRQ);
/* Initialize interrupt controllers to a safe state.
@@ -492,7 +511,7 @@ void intc0_req0_irqdispatch(struct pt_regs *regs)
intc0_req0 |= au_readl(IC0_REQ0INT);
if (!intc0_req0) return;
-
+#ifdef AU1000_USB_DEV_REQ_INT
/*
* Because of the tight timing of SETUP token to reply
* transactions, the USB devices-side packet complete
@@ -503,7 +522,7 @@ void intc0_req0_irqdispatch(struct pt_regs *regs)
do_IRQ(AU1000_USB_DEV_REQ_INT, regs);
return;
}
-
+#endif
irq = au_ffs(intc0_req0) - 1;
intc0_req0 &= ~(1<<irq);
do_IRQ(irq, regs);
@@ -521,17 +540,7 @@ void intc0_req1_irqdispatch(struct pt_regs *regs)
irq = au_ffs(intc0_req1) - 1;
intc0_req1 &= ~(1<<irq);
-#ifdef CONFIG_PM
- if (irq == AU1000_TOY_MATCH2_INT) {
- mask_and_ack_rise_edge_irq(irq);
- counter0_irq(irq, NULL, regs);
- local_enable_irq(irq);
- }
- else
-#endif
- {
- do_IRQ(irq, regs);
- }
+ do_IRQ(irq, regs);
}