Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/input/serio/q40kbd.c b/drivers/input/serio/q40kbd.c
new file mode 100644
index 00000000000..46093c50798
--- /dev/null
+++ b/drivers/input/serio/q40kbd.c
@@ -0,0 +1,163 @@
+/*
+ * $Id: q40kbd.c,v 1.12 2002/02/02 22:26:44 vojtech Exp $
+ *
+ *  Copyright (c) 2000-2001 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *	Richard Zidlicky <Richard.Zidlicky@stud.informatik.uni-erlangen.de>
+ */
+
+/*
+ * Q40 PS/2 keyboard controller driver for Linux/m68k
+ */
+
+/*
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serio.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/q40_master.h>
+#include <asm/irq.h>
+#include <asm/q40ints.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("Q40 PS/2 keyboard controller driver");
+MODULE_LICENSE("GPL");
+
+DEFINE_SPINLOCK(q40kbd_lock);
+static struct serio *q40kbd_port;
+static struct platform_device *q40kbd_device;
+
+static irqreturn_t q40kbd_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&q40kbd_lock, flags);
+
+	if (Q40_IRQ_KEYB_MASK & master_inb(INTERRUPT_REG))
+		serio_interrupt(q40kbd_port, master_inb(KEYCODE_REG), 0, regs);
+
+	master_outb(-1, KEYBOARD_UNLOCK_REG);
+
+	spin_unlock_irqrestore(&q40kbd_lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * q40kbd_flush() flushes all data that may be in the keyboard buffers
+ */
+
+static void q40kbd_flush(void)
+{
+ 	int maxread = 100;
+	unsigned long flags;
+
+	spin_lock_irqsave(&q40kbd_lock, flags);
+
+ 	while (maxread-- && (Q40_IRQ_KEYB_MASK & master_inb(INTERRUPT_REG)))
+ 		master_inb(KEYCODE_REG);
+
+	spin_unlock_irqrestore(&q40kbd_lock, flags);
+}
+
+/*
+ * q40kbd_open() is called when a port is open by the higher layer.
+ * It allocates the interrupt and enables in in the chip.
+ */
+
+static int q40kbd_open(struct serio *port)
+{
+	q40kbd_flush();
+
+	if (request_irq(Q40_IRQ_KEYBOARD, q40kbd_interrupt, 0, "q40kbd", NULL)) {
+		printk(KERN_ERR "q40kbd.c: Can't get irq %d.\n", Q40_IRQ_KEYBOARD);
+		return -1;
+	}
+
+ 	/* off we go */
+ 	master_outb(-1, KEYBOARD_UNLOCK_REG);
+ 	master_outb(1, KEY_IRQ_ENABLE_REG);
+
+ 	return 0;
+}
+
+static void q40kbd_close(struct serio *port)
+{
+	master_outb(0, KEY_IRQ_ENABLE_REG);
+	master_outb(-1, KEYBOARD_UNLOCK_REG);
+	free_irq(Q40_IRQ_KEYBOARD, NULL);
+
+	q40kbd_flush();
+}
+
+static struct serio * __init q40kbd_allocate_port(void)
+{
+	struct serio *serio;
+
+	serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	if (serio) {
+		memset(serio, 0, sizeof(struct serio));
+		serio->id.type		= SERIO_8042;
+		serio->open		= q40kbd_open;
+		serio->close		= q40kbd_close;
+		serio->dev.parent	= &q40kbd_device->dev;
+		strlcpy(serio->name, "Q40 Kbd Port", sizeof(serio->name));
+		strlcpy(serio->phys, "Q40", sizeof(serio->phys));
+	}
+
+	return serio;
+}
+
+static int __init q40kbd_init(void)
+{
+	if (!MACH_IS_Q40)
+		return -EIO;
+
+	q40kbd_device = platform_device_register_simple("q40kbd", -1, NULL, 0);
+	if (IS_ERR(q40kbd_device))
+		return PTR_ERR(q40kbd_device);
+
+	if (!(q40kbd_port = q40kbd_allocate_port())) {
+		platform_device_unregister(q40kbd_device);
+		return -ENOMEM;
+	}
+
+	serio_register_port(q40kbd_port);
+	printk(KERN_INFO "serio: Q40 kbd registered\n");
+
+	return 0;
+}
+
+static void __exit q40kbd_exit(void)
+{
+	serio_unregister_port(q40kbd_port);
+	platform_device_unregister(q40kbd_device);
+}
+
+module_init(q40kbd_init);
+module_exit(q40kbd_exit);