xtensa: support s6000 gpio irqs and alternate function selection
Implement an irq chip to handle interrupts via gpio. The GPIO chip
initialization function now takes a bitmask denoting pins that should
be configured for their alternate function.
changes compared to v1:
- fixed bug on edge interrupt configuration
- accommodated to function name change
- moved definition of VARIANT_NR_IRQS to this patch
- renamed __XTENSA_S6000_IRQ_H to _XTENSA_S6000_IRQ_H as requested
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/include/asm/gpio.h b/arch/xtensa/include/asm/gpio.h
index 0763b07..a8c9fc4 100644
--- a/arch/xtensa/include/asm/gpio.h
+++ b/arch/xtensa/include/asm/gpio.h
@@ -38,14 +38,14 @@
return __gpio_cansleep(gpio);
}
+static inline int gpio_to_irq(unsigned int gpio)
+{
+ return __gpio_to_irq(gpio);
+}
+
/*
* Not implemented, yet.
*/
-static inline int gpio_to_irq(unsigned int gpio)
-{
- return -ENOSYS;
-}
-
static inline int irq_to_gpio(unsigned int irq)
{
return -EINVAL;