From 840957918e8bc5ba84904b876daefde836a53c69 Mon Sep 17 00:00:00 2001
From: Rod Whitby <rod@whitby.id.au>
Date: Thu, 10 Nov 2005 09:43:10 +0000
Subject: nas100d-kernel: Added machine-specific files and patches.

---
 .../linux/nas100d-kernel/2.6.14/nas100d-power.c    | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 packages/linux/nas100d-kernel/2.6.14/nas100d-power.c

(limited to 'packages/linux/nas100d-kernel/2.6.14/nas100d-power.c')

diff --git a/packages/linux/nas100d-kernel/2.6.14/nas100d-power.c b/packages/linux/nas100d-kernel/2.6.14/nas100d-power.c
new file mode 100644
index 0000000000..008e6d5490
--- /dev/null
+++ b/packages/linux/nas100d-kernel/2.6.14/nas100d-power.c
@@ -0,0 +1,92 @@
+/*
+ * arch/arm/mach-ixp4xx/nas100d-power.c
+ *
+ * NAS 100d Power/Reset driver
+ *
+ * Copyright (C) 2005 Tower Technologies
+ *
+ * based on nas100d-io.c
+ *  Copyright (C) 2004 Karen Spearel
+ *
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ * Maintainers: http://www.nslu2-linux.org/
+ *
+ * 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/module.h>
+#include <linux/reboot.h>
+#include <linux/interrupt.h>
+
+#include <asm/mach-types.h>
+
+extern void ctrl_alt_del(void);
+
+static irqreturn_t nas100d_power_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	/* Signal init to do the ctrlaltdel action, this will bypass init if
+	 * it hasn't started and do a kernel_restart.
+	 */
+	ctrl_alt_del();
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t nas100d_reset_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	/* This is the paper-clip reset, it shuts the machine down directly.
+	 */
+	machine_power_off();
+
+	return IRQ_HANDLED;
+}
+
+static int __init nas100d_power_init(void)
+{
+	if (!(machine_is_nas100d()))
+		return 0;
+
+	*IXP4XX_GPIO_GPISR = 0x20400000;	/* read the 2 irqs to clr */
+
+	set_irq_type(NAS100D_RB_IRQ, IRQT_LOW);
+	set_irq_type(NAS100D_PB_IRQ, IRQT_HIGH);
+
+	gpio_line_isr_clear(NAS100D_RB_GPIO);
+	gpio_line_isr_clear(NAS100D_PB_GPIO);
+
+	if (request_irq(NAS100D_RB_IRQ, &nas100d_reset_handler,
+		SA_INTERRUPT, "NAS100D reset button", NULL) < 0) {
+
+		printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
+			NAS100D_RB_IRQ);
+
+		return -EIO;
+	}
+
+	if (request_irq(NAS100D_PB_IRQ, &nas100d_power_handler,
+		SA_INTERRUPT, "NAS100D power button", NULL) < 0) {
+
+		printk(KERN_DEBUG "Power Button IRQ %d not available\n",
+			NAS100D_PB_IRQ);
+
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void __exit nas100d_power_exit(void)
+{
+	free_irq(NAS100D_RB_IRQ, NULL);
+	free_irq(NAS100D_PB_IRQ, NULL);
+}
+
+module_init(nas100d_power_init);
+module_exit(nas100d_power_exit);
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("NAS100D Power/Reset driver");
+MODULE_LICENSE("GPL");
-- 
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