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authorGreg Ungerer <gerg@snapgear.com>2007-07-30 02:38:57 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-10-12 23:43:05 +0100
commiteb1d65aa1b21c9021949c0ece443501b0c135fef (patch)
tree31a9d03a768d984b7b86b676c1d5a1e3992ff43f /arch/arm/mach-at91/at91x40.c
parent699a714501f028b1db2bf741111a0df856128899 (diff)
[ARM] 4534/1: AT91x40 interrupt support
Interrupt setup support for the Atmel AT91x40 CPU family. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-at91/at91x40.c')
-rw-r--r--arch/arm/mach-at91/at91x40.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91x40.c b/arch/arm/mach-at91/at91x40.c
new file mode 100644
index 000000000000..1de121fc55f4
--- /dev/null
+++ b/arch/arm/mach-at91/at91x40.c
@@ -0,0 +1,67 @@
+/*
+ * arch/arm/mach-at91/at91x40.c
+ *
+ * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
+ * Copyright (C) 2005 SAN People
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/arch/at91x40.h>
+#include <asm/arch/at91_st.h>
+#include "generic.h"
+
+/*
+ * This is used in the gpio code, stub locally.
+ */
+int clk_enable(struct clk *clk)
+{
+ return 0;
+}
+
+void __init at91x40_initialize(unsigned long main_clock)
+{
+ at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)
+ | (1 << AT91X40_ID_IRQ2);
+}
+
+/*
+ * The default interrupt priority levels (0 = lowest, 7 = highest).
+ */
+static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = {
+ 7, /* Advanced Interrupt Controller (FIQ) */
+ 0, /* System Peripherals */
+ 0, /* USART 0 */
+ 0, /* USART 1 */
+ 2, /* Timer Counter 0 */
+ 2, /* Timer Counter 1 */
+ 2, /* Timer Counter 2 */
+ 0, /* Watchdog timer */
+ 0, /* Parallel IO Controller A */
+ 0, /* Reserved */
+ 0, /* Reserved */
+ 0, /* Reserved */
+ 0, /* Reserved */
+ 0, /* Reserved */
+ 0, /* Reserved */
+ 0, /* Reserved */
+ 0, /* External IRQ0 */
+ 0, /* External IRQ1 */
+ 0, /* External IRQ2 */
+};
+
+void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])
+{
+ if (!priority)
+ priority = at91x40_default_irq_priority;
+
+ at91_aic_init(priority);
+}
+