sh: intc: userimask support.
This adds support for hardware-assisted userspace irq masking for
special priority levels. Due to the SR.IMASK interactivity, only some
platforms implement this in hardware (including but not limited to
SH-4A interrupt controllers, and ARM-based SH-Mobile CPUs). Each CPU
needs to wire this up on its own, for now only SH7786 is wired up as an
example.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
index 01d8168..f0e8cca 100644
--- a/include/linux/sh_intc.h
+++ b/include/linux/sh_intc.h
@@ -99,6 +99,15 @@
int __init register_intc_controller(struct intc_desc *desc);
int intc_set_priority(unsigned int irq, unsigned int prio);
+#ifdef CONFIG_INTC_USERIMASK
+int register_intc_userimask(unsigned long addr);
+#else
+static inline int register_intc_userimask(unsigned long addr)
+{
+ return 0;
+}
+#endif
+
int reserve_irq_vector(unsigned int irq);
void reserve_irq_legacy(void);