1 files changed, 49 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_common.c b/arch/powerpc/platforms/85xx/mpc85xx_common.c
new file mode 100644
index 00000000000..49d781c3696
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc85xx_common.c
@@ -0,0 +1,49 @@
+/*
+ * Routines common to most mpc85xx-based boards.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/of_platform.h>
+
+#include <sysdev/cpm2_pic.h>
+
+#include "mpc85xx.h"
+
+#ifdef CONFIG_CPM2
+static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
+{
+        struct irq_chip *chip = irq_desc_get_chip(desc);
+        int cascade_irq;
+
+        while ((cascade_irq = cpm2_get_irq()) >= 0)
+                generic_handle_irq(cascade_irq);
+
+        chip->irq_eoi(&desc->irq_data);
+}
+
+
+void __init mpc85xx_cpm2_pic_init(void)
+{
+        struct device_node *np;
+        int irq;
+
+        /* Setup CPM2 PIC */
+        np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
+        if (np == NULL) {
+                printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
+                return;
+        }
+        irq = irq_of_parse_and_map(np, 0);
+        if (irq == NO_IRQ) {
+                of_node_put(np);
+                printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n");
+                return;
+        }
+
+        cpm2_pic_init(np);
+        of_node_put(np);
+        irq_set_chained_handler(irq, cpm2_cascade);
+}
+#endif