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Index: linux-2.6.27/arch/powerpc/platforms/83xx/Kconfig
===================================================================
--- linux-2.6.27.orig/arch/powerpc/platforms/83xx/Kconfig 2008-10-10 00:13:53.000000000 +0200
+++ linux-2.6.27/arch/powerpc/platforms/83xx/Kconfig 2009-01-23 10:54:03.000000000 +0100
@@ -104,6 +104,13 @@
endif
+
+config WAKEUP_IT
+ tristate "83xx interrupt for PM wakeup"
+ help
+ This enables a driver to be used as a wakeup source .
+
+
# used for usb
config PPC_MPC831x
bool
Index: linux-2.6.27/arch/powerpc/platforms/83xx/Makefile
===================================================================
--- linux-2.6.27.orig/arch/powerpc/platforms/83xx/Makefile 2008-10-10 00:13:53.000000000 +0200
+++ linux-2.6.27/arch/powerpc/platforms/83xx/Makefile 2009-01-23 10:54:03.000000000 +0100
@@ -14,3 +14,4 @@
obj-$(CONFIG_SBC834x) += sbc834x.o
obj-$(CONFIG_MPC837x_RDB) += mpc837x_rdb.o
obj-$(CONFIG_ASP834x) += asp834x.o
+obj-$(CONFIG_WAKEUP_IT) += wakeup-it.o
Index: linux-2.6.27/arch/powerpc/platforms/83xx/wakeup-it.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.27/arch/powerpc/platforms/83xx/wakeup-it.c 2009-01-23 10:49:09.000000000 +0100
@@ -0,0 +1,163 @@
+/*
+ * This support a driver to be used as a wakeup source on the MPC8313.
+ *
+ * Copyright (c) 2008 Cenosys
+ *
+ * Alexandre Coffignal <alexandre.coffignal@censoys.com>
+ * Sylvain Giroudon <sylvain.giroudon@goobie.fr>
+ *
+ * This program 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/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/of_platform.h>
+#include <linux/reboot.h>
+#include <linux/irq.h>
+
+#include <sysdev/fsl_soc.h>
+
+#define DRIVER_NAME "wakeup-it"
+
+char suspend = 0;
+
+static char *wakeup_irq_ids[] = {
+ "capsense",
+ "rfid",
+};
+
+struct wakeup_priv {
+ int nirq;
+ int irq[ARRAY_SIZE(wakeup_irq_ids)];
+ spinlock_t lock;
+};
+
+struct wakeup_irq_desc {
+ char *name;
+ int index;
+};
+
+static irqreturn_t wakeup(int irq, void *dev_id)
+{
+ //printk(KERN_INFO "===== WAKEUP INTERRUPT %d !!\n", irq);
+
+// if ( suspend )
+// kernel_restart(NULL);
+ return IRQ_HANDLED ;
+}
+
+
+static void wakeup_free(struct wakeup_priv *priv)
+{
+ int i;
+
+ for (i = 0; i < priv->nirq; i++) {
+ free_irq(priv->irq[i], priv);
+ }
+
+ kfree(priv);
+}
+
+
+static int __devinit wakeup_probe(struct of_device *dev, const struct of_device_id *match)
+{
+ struct device_node *np = dev->node;
+ struct resource res;
+ int ret = 0;
+ struct wakeup_priv *priv;
+ int i;
+
+ priv = kmalloc(sizeof(struct wakeup_priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->nirq = 0;
+ spin_lock_init(&priv->lock);
+ dev_set_drvdata(&dev->dev, priv);
+
+ ret = of_address_to_resource(np, 0, &res);
+ if (ret)
+ goto out;
+
+ for (i = 0; i < ARRAY_SIZE(wakeup_irq_ids); i++) {
+ char *id = wakeup_irq_ids[i];
+ char it_name[32];
+ int it_num;
+
+ it_num = irq_of_parse_and_map(np, i);
+ if ( it_num == NO_IRQ ) {
+ dev_err(&dev->dev, DRIVER_NAME ": interrupt #%d (%s) does not exist in device tree.\n", i, id);
+ ret = -ENODEV;
+ goto out;
+ }
+
+ set_irq_type(it_num, IRQ_TYPE_EDGE_FALLING);
+
+ snprintf(it_name, sizeof(it_name), DRIVER_NAME ":%s", id);
+
+ ret = request_irq(it_num, wakeup, 0, it_name, priv);
+ if ( ret ) {
+ printk(KERN_WARNING DRIVER_NAME ": cannot request interrupt %d (%s)\n", it_num, id);
+ goto out;
+ }
+
+ printk(KERN_INFO DRIVER_NAME ": accepting wakeup event from %s (%d)\n", id, it_num);
+
+ priv->irq[priv->nirq++] = it_num;
+ }
+
+ return 0;
+
+out:
+ wakeup_free(priv);
+ return ret;
+}
+
+static int __devexit wakeup_remove(struct of_device *dev)
+{
+ struct wakeup_priv *priv = dev_get_drvdata(&dev->dev);
+ wakeup_free(priv);
+ return 0;
+}
+
+static struct of_device_id wakeup_match[] = {
+ {
+ .compatible = "fsl,wakeup-it",
+ },
+ {},
+};
+
+static int wakeup_suspend(struct of_device * dev, pm_message_t state)
+{
+ int ret = 0;
+ printk(KERN_INFO DRIVER_NAME ": suspend\n");
+ suspend=1;
+ return ret;
+}
+
+
+static struct of_platform_driver wakeup_driver = {
+ .name = DRIVER_NAME,
+ .match_table = wakeup_match,
+ .probe = wakeup_probe,
+ .suspend = wakeup_suspend,
+ .remove = __devexit_p(wakeup_remove)
+
+};
+
+static int __init wakeup_init(void)
+{
+ return of_register_platform_driver(&wakeup_driver);
+}
+
+static void __exit wakeup_exit(void)
+{
+ of_unregister_platform_driver(&wakeup_driver);
+}
+
+module_init(wakeup_init);
+module_exit(wakeup_exit);
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