Port C interrupts can be either falling edge, or either edge.
Other external interrupts are either falling edge or active low.
Signed-Off-By: Mark Ware <mw...@elphinstone.net>
---
Changed in v2:
- Disallow rising edge only on Port C
arch/powerpc/sysdev/cpm2_pic.c | 30 +++++++++++++++++++++++-------
1 files changed, 23 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c
index 78f1f7c..eba5f24 100644
--- a/arch/powerpc/sysdev/cpm2_pic.c
+++ b/arch/powerpc/sysdev/cpm2_pic.c
@@ -141,13 +141,29 @@ static int cpm2_set_irq_type(unsigned int virq, unsigned
int flow_type)
struct irq_desc *desc = get_irq_desc(virq);
unsigned int vold, vnew, edibit;
- if (flow_type == IRQ_TYPE_NONE)
- flow_type = IRQ_TYPE_LEVEL_LOW;
-
- if (flow_type & IRQ_TYPE_EDGE_RISING) {
- printk(KERN_ERR "CPM2 PIC: sense type 0x%x not supported\n",
- flow_type);
- return -EINVAL;
+ /* Port C interrupts are either IRQ_TYPE_EDGE_FALLING or
+ * IRQ_TYPE_EDGE_BOTH (default). All others are IRQ_TYPE_EDGE_FALLING
+ * or IRQ_TYPE_LEVEL_LOW (default)
+ */
+ if (src >= CPM2_IRQ_PORTC15 && src <= CPM2_IRQ_PORTC0) {
+ if (flow_type == IRQ_TYPE_NONE)
+ flow_type = IRQ_TYPE_EDGE_BOTH;
+
+ if ((flow_type != IRQ_TYPE_EDGE_BOTH) &&
+ (flow_type != IRQ_TYPE_EDGE_FALLING)) {
+ printk(KERN_ERR "CPM2 PIC: sense type 0x%x not
supported\n",
+ flow_type);
+ return -EINVAL;
+ }
+ } else {
+ if (flow_type == IRQ_TYPE_NONE)
+ flow_type = IRQ_TYPE_LEVEL_LOW;
+
+ if (flow_type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_HIGH)) {
+ printk(KERN_ERR "CPM2 PIC: sense type 0x%x not
supported\n",
+ flow_type);
+ return -EINVAL;
+ }
}
desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
--
1.5.6.5
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