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| author | Max Filippov <jcmvbkbc@gmail.com> | 2013-12-01 12:04:57 +0400 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2014-01-14 22:19:58 +0400 |
| commit | 26a8e96a8b37e8070fa9dcb1b7490cf4d4492d50 (patch) | |
| tree | 5104a9c1e12dd3728b05db5b21b5033bd7b648d2 /arch/xtensa/kernel/irq.c | |
| parent | bae07f8a9dfaf6268f2fba5522b70bce6fc7d718 (diff) | |
| download | linux-26a8e96a8b37e8070fa9dcb1b7490cf4d4492d50.tar.xz | |
xtensa: add MX irqchip
MX is an interrupt distributor used in some SMP-capable xtensa
configurations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/kernel/irq.c')
| -rw-r--r-- | arch/xtensa/kernel/irq.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index 3cef58e28332..7d49730f4056 100644 --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -123,6 +123,14 @@ unsigned xtensa_map_ext_irq(unsigned ext_irq) return XCHAL_NUM_INTERRUPTS; } +unsigned xtensa_get_ext_irq_no(unsigned irq) +{ + unsigned mask = (XCHAL_INTTYPE_MASK_EXTERN_EDGE | + XCHAL_INTTYPE_MASK_EXTERN_LEVEL) & + ((1u << irq) - 1); + return hweight32(mask); +} + void __init init_IRQ(void) { #ifdef CONFIG_OF |