mx51: support FIQ on TZIC, revised

Add support for FIQ on mx51 TZIC

TZIC changes tested with FIQ audio on an mx51 board

AVIC changes build with mx3_defconfig, not tested

Signed-off-by: Peter Horton <phorton@bitbox.co.uk>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/irq-common.c b/arch/arm/plat-mxc/irq-common.c
new file mode 100644
index 000000000000..0c799ac27730
--- /dev/null
+++ b/arch/arm/plat-mxc/irq-common.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) BitBox Ltd 2010
+ *
+ * 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.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/irq.h>
+
+#include "irq-common.h"
+
+int imx_irq_set_priority(unsigned char irq, unsigned char prio)
+{
+        struct mxc_irq_chip *chip;
+        struct irq_chip *base;
+        int ret;
+
+        ret = -ENOSYS;
+
+        base = get_irq_chip(irq);
+        if (base) {
+                chip = container_of(base, struct mxc_irq_chip, base);
+                if (chip->set_priority)
+                        ret = chip->set_priority(irq, prio);
+        }
+
+        return ret;
+}
+EXPORT_SYMBOL(imx_irq_set_priority);
+
+int mxc_set_irq_fiq(unsigned int irq, unsigned int type)
+{
+        struct mxc_irq_chip *chip;
+        struct irq_chip *base;
+        int ret;
+
+        ret = -ENOSYS;
+
+        base = get_irq_chip(irq);
+        if (base) {
+                chip = container_of(base, struct mxc_irq_chip, base);
+                if (chip->set_irq_fiq)
+                        ret = chip->set_irq_fiq(irq, type);
+        }
+
+        return ret;
+}
+EXPORT_SYMBOL(mxc_set_irq_fiq);