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>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/irqchip/xtensa-mx.h b/include/linux/irqchip/xtensa-mx.h
new file mode 100644
index 000000000000..9c3b6ecc8b2f
--- /dev/null
+++ b/include/linux/irqchip/xtensa-mx.h
@@ -0,0 +1,17 @@
+/*
+ * Xtensa MX interrupt distributor
+ *
+ * Copyright (C) 2002 - 2013 Tensilica, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef __LINUX_IRQCHIP_XTENSA_MX_H
+#define __LINUX_IRQCHIP_XTENSA_MX_H
+
+struct device_node;
+int xtensa_mx_init_legacy(struct device_node *interrupt_parent);
+
+#endif /* __LINUX_IRQCHIP_XTENSA_MX_H */