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Diffstat (limited to 'kernel/arch/sh/kernel/cpu/sh4a/intc-shx3.c')
-rw-r--r--kernel/arch/sh/kernel/cpu/sh4a/intc-shx3.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/arch/sh/kernel/cpu/sh4a/intc-shx3.c b/kernel/arch/sh/kernel/cpu/sh4a/intc-shx3.c
new file mode 100644
index 000000000..78c971486
--- /dev/null
+++ b/kernel/arch/sh/kernel/cpu/sh4a/intc-shx3.c
@@ -0,0 +1,34 @@
+/*
+ * Shared support for SH-X3 interrupt controllers.
+ *
+ * Copyright (C) 2009 - 2010 Paul Mundt
+ *
+ * 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.
+ */
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/init.h>
+
+#define INTACK 0xfe4100b8
+#define INTACKCLR 0xfe4100bc
+#define INTC_USERIMASK 0xfe411000
+
+#ifdef CONFIG_INTC_BALANCING
+unsigned int irq_lookup(unsigned int irq)
+{
+ return __raw_readl(INTACK) & 1 ? irq : NO_IRQ_IGNORE;
+}
+
+void irq_finish(unsigned int irq)
+{
+ __raw_writel(irq2evt(irq), INTACKCLR);
+}
+#endif
+
+static int __init shx3_irq_setup(void)
+{
+ return register_intc_userimask(INTC_USERIMASK);
+}
+arch_initcall(shx3_irq_setup);