1 files changed, 51 insertions, 0 deletions

diff --git a/arch/arm/plat-stmp3xxx/irq.c b/arch/arm/plat-stmp3xxx/irq.c
new file mode 100644
index 000000000000..20de4e0401ef
--- /dev/null
+++ b/arch/arm/plat-stmp3xxx/irq.c
@@ -0,0 +1,51 @@
+/*
+ * Freescale STMP37XX/STMP378X common interrupt handling code
+ *
+ * Author: Vladislav Buzov <vbuzov@embeddedalley.com>
+ *
+ * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/sysdev.h>
+
+#include <mach/stmp3xxx.h>
+#include <mach/platform.h>
+#include <mach/regs-icoll.h>
+
+void __init stmp3xxx_init_irq(struct irq_chip *chip)
+{
+        unsigned int i, lv;
+
+        /* Reset the interrupt controller */
+        stmp3xxx_reset_block(REGS_ICOLL_BASE + HW_ICOLL_CTRL, true);
+
+        /* Disable all interrupts initially */
+        for (i = 0; i < NR_REAL_IRQS; i++) {
+                chip->mask(i);
+                set_irq_chip(i, chip);
+                set_irq_handler(i, handle_level_irq);
+                set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+        }
+
+        /* Ensure vector is cleared */
+        for (lv = 0; lv < 4; lv++)
+                __raw_writel(1 << lv, REGS_ICOLL_BASE + HW_ICOLL_LEVELACK);
+        __raw_writel(0, REGS_ICOLL_BASE + HW_ICOLL_VECTOR);
+
+        /* Barrier */
+        (void)__raw_readl(REGS_ICOLL_BASE + HW_ICOLL_STAT);
+}
+