ARM: pxa: use chained interrupt for GPIO0 and GPIO1

GPIO0 and GPIO1 are linked to unique interrupt line in PXA series,
others are linked to another interrupt line. All GPIO are linked to one
interrupt line in MMP series.

Since gpio driver is shared between PXA series and MMP series, define
GPIO0 and GPIO1 as chained interrupt chip. So we can move out gpio code
from irq.c to gpio-pxa.c.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index ee137712f9db..a4121bb50cf2 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -283,6 +283,20 @@ void __init pxa_init_gpio(int mux_irq, int start, int end, set_wake_t fn)
                 __raw_writel(~0,c->regbase + GEDR_OFFSET);
         }
 
+#ifdef CONFIG_ARCH_PXA
+        irq = gpio_to_irq(0);
+        irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
+                                 handle_edge_irq);
+        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+        irq_set_chained_handler(IRQ_GPIO0, pxa_gpio_demux_handler);
+
+        irq = gpio_to_irq(1);
+        irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
+                                 handle_edge_irq);
+        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+        irq_set_chained_handler(IRQ_GPIO1, pxa_gpio_demux_handler);
+#endif
+
         for (irq  = gpio_to_irq(start); irq <= gpio_to_irq(end); irq++) {
                 irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
                                          handle_edge_irq);