Linux-2.6.12-rc2v2.6.12-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, 1148 insertions, 0 deletions

diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
new file mode 100644
index 000000000000..f7304f0ce542
--- /dev/null
+++ b/drivers/input/keyboard/atkbd.c
@@ -0,0 +1,1148 @@
+/*
+ * AT and PS/2 keyboard driver
+ *
+ * Copyright (c) 1999-2002 Vojtech Pavlik
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * This driver can handle standard AT keyboards and PS/2 keyboards in
+ * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
+ * input-only controllers and AT keyboards connected over a one way RS232
+ * converter.
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/workqueue.h>
+#include <linux/libps2.h>
+
+#define DRIVER_DESC	"AT and PS/2 keyboard driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+static int atkbd_set = 2;
+module_param_named(set, atkbd_set, int, 0);
+MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
+
+#if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
+static int atkbd_reset;
+#else
+static int atkbd_reset = 1;
+#endif
+module_param_named(reset, atkbd_reset, bool, 0);
+MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
+
+static int atkbd_softrepeat;
+module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
+MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
+
+static int atkbd_softraw = 1;
+module_param_named(softraw, atkbd_softraw, bool, 0);
+MODULE_PARM_DESC(softraw, "Use software generated rawmode");
+
+static int atkbd_scroll = 1;
+module_param_named(scroll, atkbd_scroll, bool, 0);
+MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
+
+static int atkbd_extra;
+module_param_named(extra, atkbd_extra, bool, 0);
+MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
+
+__obsolete_setup("atkbd_set=");
+__obsolete_setup("atkbd_reset");
+__obsolete_setup("atkbd_softrepeat=");
+
+/*
+ * Scancode to keycode tables. These are just the default setting, and
+ * are loadable via an userland utility.
+ */
+
+static unsigned char atkbd_set2_keycode[512] = {
+
+#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
+
+/* XXX: need a more general approach */
+
+#include "hpps2atkbd.h"	/* include the keyboard scancodes */
+
+#else
+	  0, 67, 65, 63, 61, 59, 60, 88,  0, 68, 66, 64, 62, 15, 41,117,
+	  0, 56, 42, 93, 29, 16,  2,  0,  0,  0, 44, 31, 30, 17,  3,  0,
+	  0, 46, 45, 32, 18,  5,  4, 95,  0, 57, 47, 33, 20, 19,  6,183,
+	  0, 49, 48, 35, 34, 21,  7,184,  0,  0, 50, 36, 22,  8,  9,185,
+	  0, 51, 37, 23, 24, 11, 10,  0,  0, 52, 53, 38, 39, 25, 12,  0,
+	  0, 89, 40,  0, 26, 13,  0,  0, 58, 54, 28, 27,  0, 43,  0, 85,
+	  0, 86, 91, 90, 92,  0, 14, 94,  0, 79,124, 75, 71,121,  0,  0,
+	 82, 83, 80, 76, 77, 72,  1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
+
+	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+	217,100,255,  0, 97,165,  0,  0,156,  0,  0,  0,  0,  0,  0,125,
+	173,114,  0,113,  0,  0,  0,126,128,  0,  0,140,  0,  0,  0,127,
+	159,  0,115,  0,164,  0,  0,116,158,  0,150,166,  0,  0,  0,142,
+	157,  0,  0,  0,  0,  0,  0,  0,155,  0, 98,  0,  0,163,  0,  0,
+	226,  0,  0,  0,  0,  0,  0,  0,  0,255, 96,  0,  0,  0,143,  0,
+	  0,  0,  0,  0,  0,  0,  0,  0,  0,107,  0,105,102,  0,  0,112,
+	110,111,108,112,106,103,  0,119,  0,118,109,  0, 99,104,119,  0,
+
+	  0,  0,  0, 65, 99,
+#endif
+};
+
+static unsigned char atkbd_set3_keycode[512] = {
+
+	  0,  0,  0,  0,  0,  0,  0, 59,  1,138,128,129,130, 15, 41, 60,
+	131, 29, 42, 86, 58, 16,  2, 61,133, 56, 44, 31, 30, 17,  3, 62,
+	134, 46, 45, 32, 18,  5,  4, 63,135, 57, 47, 33, 20, 19,  6, 64,
+	136, 49, 48, 35, 34, 21,  7, 65,137,100, 50, 36, 22,  8,  9, 66,
+	125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
+	113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
+	108,105,119,103,111,107, 14,110,  0, 79,106, 75, 71,109,102,104,
+	 82, 83, 80, 76, 77, 72, 69, 98,  0, 96, 81,  0, 78, 73, 55,183,
+
+	184,185,186,187, 74, 94, 92, 93,  0,  0,  0,125,126,127,112,  0,
+	  0,139,150,163,165,115,152,150,166,140,160,154,113,114,167,168,
+	148,149,147,140
+};
+
+static unsigned char atkbd_unxlate_table[128] = {
+          0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
+         21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
+         35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
+         50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88,  5,  6,  4, 12,  3,
+         11,  2, 10,  1,  9,119,126,108,117,125,123,107,115,116,121,105,
+        114,122,112,113,127, 96, 97,120,  7, 15, 23, 31, 39, 47, 55, 63,
+         71, 79, 86, 94,  8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
+         19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
+};
+
+#define ATKBD_CMD_SETLEDS	0x10ed
+#define ATKBD_CMD_GSCANSET	0x11f0
+#define ATKBD_CMD_SSCANSET	0x10f0
+#define ATKBD_CMD_GETID		0x02f2
+#define ATKBD_CMD_SETREP	0x10f3
+#define ATKBD_CMD_ENABLE	0x00f4
+#define ATKBD_CMD_RESET_DIS	0x00f5
+#define ATKBD_CMD_SETALL_MBR	0x00fa
+#define ATKBD_CMD_RESET_BAT	0x02ff
+#define ATKBD_CMD_RESEND	0x00fe
+#define ATKBD_CMD_EX_ENABLE	0x10ea
+#define ATKBD_CMD_EX_SETLEDS	0x20eb
+#define ATKBD_CMD_OK_GETID	0x02e8
+
+#define ATKBD_RET_ACK		0xfa
+#define ATKBD_RET_NAK		0xfe
+#define ATKBD_RET_BAT		0xaa
+#define ATKBD_RET_EMUL0		0xe0
+#define ATKBD_RET_EMUL1		0xe1
+#define ATKBD_RET_RELEASE	0xf0
+#define ATKBD_RET_HANGUEL	0xf1
+#define ATKBD_RET_HANJA		0xf2
+#define ATKBD_RET_ERR		0xff
+
+#define ATKBD_KEY_UNKNOWN	  0
+#define ATKBD_KEY_NULL		255
+
+#define ATKBD_SCR_1		254
+#define ATKBD_SCR_2		253
+#define ATKBD_SCR_4		252
+#define ATKBD_SCR_8		251
+#define ATKBD_SCR_CLICK		250
+#define ATKBD_SCR_LEFT		249
+#define ATKBD_SCR_RIGHT		248
+
+#define ATKBD_SPECIAL		248
+
+static struct {
+	unsigned char keycode;
+	unsigned char set2;
+} atkbd_scroll_keys[] = {
+	{ ATKBD_SCR_1,     0xc5 },
+	{ ATKBD_SCR_2,     0xa9 },
+	{ ATKBD_SCR_4,     0xb6 },
+	{ ATKBD_SCR_8,     0xa7 },
+	{ ATKBD_SCR_CLICK, 0xe0 },
+	{ ATKBD_SCR_LEFT,  0xcb },
+	{ ATKBD_SCR_RIGHT, 0xd2 },
+};
+
+/*
+ * The atkbd control structure
+ */
+
+struct atkbd {
+
+	struct ps2dev	ps2dev;
+
+	/* Written only during init */
+	char name[64];
+	char phys[32];
+	struct input_dev dev;
+
+	unsigned short id;
+	unsigned char keycode[512];
+	unsigned char set;
+	unsigned char translated;
+	unsigned char extra;
+	unsigned char write;
+	unsigned char softrepeat;
+	unsigned char softraw;
+	unsigned char scroll;
+	unsigned char enabled;
+
+	/* Accessed only from interrupt */
+	unsigned char emul;
+	unsigned char resend;
+	unsigned char release;
+	unsigned char bat_xl;
+	unsigned int last;
+	unsigned long time;
+};
+
+static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
+				ssize_t (*handler)(struct atkbd *, char *));
+static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
+				ssize_t (*handler)(struct atkbd *, const char *, size_t));
+#define ATKBD_DEFINE_ATTR(_name)						\
+static ssize_t atkbd_show_##_name(struct atkbd *, char *);			\
+static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t);		\
+static ssize_t atkbd_do_show_##_name(struct device *d, char *b)			\
+{										\
+	return atkbd_attr_show_helper(d, b, atkbd_show_##_name);		\
+}										\
+static ssize_t atkbd_do_set_##_name(struct device *d, const char *b, size_t s)	\
+{										\
+	return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name);		\
+}										\
+static struct device_attribute atkbd_attr_##_name = 				\
+	__ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
+
+ATKBD_DEFINE_ATTR(extra);
+ATKBD_DEFINE_ATTR(scroll);
+ATKBD_DEFINE_ATTR(set);
+ATKBD_DEFINE_ATTR(softrepeat);
+ATKBD_DEFINE_ATTR(softraw);
+
+
+static void atkbd_report_key(struct input_dev *dev, struct pt_regs *regs, int code, int value)
+{
+	input_regs(dev, regs);
+	if (value == 3) {
+		input_report_key(dev, code, 1);
+		input_sync(dev);
+		input_report_key(dev, code, 0);
+	} else
+		input_event(dev, EV_KEY, code, value);
+	input_sync(dev);
+}
+
+/*
+ * atkbd_interrupt(). Here takes place processing of data received from
+ * the keyboard into events.
+ */
+
+static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
+			unsigned int flags, struct pt_regs *regs)
+{
+	struct atkbd *atkbd = serio_get_drvdata(serio);
+	unsigned int code = data;
+	int scroll = 0, hscroll = 0, click = -1;
+	int value;
+
+#ifdef ATKBD_DEBUG
+	printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
+#endif
+
+#if !defined(__i386__) && !defined (__x86_64__)
+	if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
+		printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
+		serio_write(serio, ATKBD_CMD_RESEND);
+		atkbd->resend = 1;
+		goto out;
+	}
+
+	if (!flags && data == ATKBD_RET_ACK)
+		atkbd->resend = 0;
+#endif
+
+	if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
+		if  (ps2_handle_ack(&atkbd->ps2dev, data))
+			goto out;
+
+	if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
+		if  (ps2_handle_response(&atkbd->ps2dev, data))
+			goto out;
+
+	if (!atkbd->enabled)
+		goto out;
+
+	input_event(&atkbd->dev, EV_MSC, MSC_RAW, code);
+
+	if (atkbd->translated) {
+
+		if (atkbd->emul ||
+		    !(code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1 ||
+		      code == ATKBD_RET_HANGUEL || code == ATKBD_RET_HANJA ||
+		      code == ATKBD_RET_ERR ||
+	             (code == ATKBD_RET_BAT && !atkbd->bat_xl))) {
+			atkbd->release = code >> 7;
+			code &= 0x7f;
+		}
+
+		if (!atkbd->emul &&
+		     (code & 0x7f) == (ATKBD_RET_BAT & 0x7f))
+			atkbd->bat_xl = !atkbd->release;
+	}
+
+	switch (code) {
+		case ATKBD_RET_BAT:
+			atkbd->enabled = 0;
+			serio_rescan(atkbd->ps2dev.serio);
+			goto out;
+		case ATKBD_RET_EMUL0:
+			atkbd->emul = 1;
+			goto out;
+		case ATKBD_RET_EMUL1:
+			atkbd->emul = 2;
+			goto out;
+		case ATKBD_RET_RELEASE:
+			atkbd->release = 1;
+			goto out;
+		case ATKBD_RET_HANGUEL:
+			atkbd_report_key(&atkbd->dev, regs, KEY_HANGUEL, 3);
+			goto out;
+		case ATKBD_RET_HANJA:
+			atkbd_report_key(&atkbd->dev, regs, KEY_HANJA, 3);
+			goto out;
+		case ATKBD_RET_ERR:
+			printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
+			goto out;
+	}
+
+	if (atkbd->set != 3)
+		code = (code & 0x7f) | ((code & 0x80) << 1);
+	if (atkbd->emul) {
+		if (--atkbd->emul)
+			goto out;
+		code |= (atkbd->set != 3) ? 0x80 : 0x100;
+	}
+
+	if (atkbd->keycode[code] != ATKBD_KEY_NULL)
+		input_event(&atkbd->dev, EV_MSC, MSC_SCAN, code);
+
+	switch (atkbd->keycode[code]) {
+		case ATKBD_KEY_NULL:
+			break;
+		case ATKBD_KEY_UNKNOWN:
+			if (data == ATKBD_RET_ACK || data == ATKBD_RET_NAK) {
+				printk(KERN_WARNING "atkbd.c: Spurious %s on %s. Some program, "
+				       "like XFree86, might be trying access hardware directly.\n",
+				       data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
+			} else {
+				printk(KERN_WARNING "atkbd.c: Unknown key %s "
+				       "(%s set %d, code %#x on %s).\n",
+				       atkbd->release ? "released" : "pressed",
+				       atkbd->translated ? "translated" : "raw",
+				       atkbd->set, code, serio->phys);
+				printk(KERN_WARNING "atkbd.c: Use 'setkeycodes %s%02x <keycode>' "
+				       "to make it known.\n",
+				       code & 0x80 ? "e0" : "", code & 0x7f);
+			}
+			input_sync(&atkbd->dev);
+			break;
+		case ATKBD_SCR_1:
+			scroll = 1 - atkbd->release * 2;
+			break;
+		case ATKBD_SCR_2:
+			scroll = 2 - atkbd->release * 4;
+			break;
+		case ATKBD_SCR_4:
+			scroll = 4 - atkbd->release * 8;
+			break;
+		case ATKBD_SCR_8:
+			scroll = 8 - atkbd->release * 16;
+			break;
+		case ATKBD_SCR_CLICK:
+			click = !atkbd->release;
+			break;
+		case ATKBD_SCR_LEFT:
+			hscroll = -1;
+			break;
+		case ATKBD_SCR_RIGHT:
+			hscroll = 1;
+			break;
+		default:
+			value = atkbd->release ? 0 :
+				(1 + (!atkbd->softrepeat && test_bit(atkbd->keycode[code], atkbd->dev.key)));
+
+			switch (value) { 	/* Workaround Toshiba laptop multiple keypress */
+				case 0:
+					atkbd->last = 0;
+					break;
+				case 1:
+					atkbd->last = code;
+					atkbd->time = jiffies + msecs_to_jiffies(atkbd->dev.rep[REP_DELAY]) / 2;
+					break;
+				case 2:
+					if (!time_after(jiffies, atkbd->time) && atkbd->last == code)
+						value = 1;
+					break;
+			}
+
+			atkbd_report_key(&atkbd->dev, regs, atkbd->keycode[code], value);
+	}
+
+	if (atkbd->scroll) {
+		input_regs(&atkbd->dev, regs);
+		if (click != -1)
+			input_report_key(&atkbd->dev, BTN_MIDDLE, click);
+		input_report_rel(&atkbd->dev, REL_WHEEL, scroll);
+		input_report_rel(&atkbd->dev, REL_HWHEEL, hscroll);
+		input_sync(&atkbd->dev);
+	}
+
+	atkbd->release = 0;
+out:
+	return IRQ_HANDLED;
+}
+
+/*
+ * Event callback from the input module. Events that change the state of
+ * the hardware are processed here.
+ */
+
+static int atkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	struct atkbd *atkbd = dev->private;
+	const short period[32] =
+		{ 33,  37,  42,  46,  50,  54,  58,  63,  67,  75,  83,  92, 100, 109, 116, 125,
+		 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
+	const short delay[4] =
+		{ 250, 500, 750, 1000 };
+	unsigned char param[2];
+	int i, j;
+
+	if (!atkbd->write)
+		return -1;
+
+	switch (type) {
+
+		case EV_LED:
+
+			param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
+			         | (test_bit(LED_NUML,    dev->led) ? 2 : 0)
+			         | (test_bit(LED_CAPSL,   dev->led) ? 4 : 0);
+		        ps2_schedule_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS);
+
+			if (atkbd->extra) {
+				param[0] = 0;
+				param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
+					 | (test_bit(LED_SLEEP,   dev->led) ? 0x02 : 0)
+					 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
+				         | (test_bit(LED_MISC,    dev->led) ? 0x10 : 0)
+				         | (test_bit(LED_MUTE,    dev->led) ? 0x20 : 0);
+				ps2_schedule_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS);
+			}
+
+			return 0;
+
+
+		case EV_REP:
+
+			if (atkbd->softrepeat) return 0;
+
+			i = j = 0;
+			while (i < 32 && period[i] < dev->rep[REP_PERIOD]) i++;
+			while (j < 4 && delay[j] < dev->rep[REP_DELAY]) j++;
+			dev->rep[REP_PERIOD] = period[i];
+			dev->rep[REP_DELAY] = delay[j];
+			param[0] = i | (j << 5);
+			ps2_schedule_command(&atkbd->ps2dev, param, ATKBD_CMD_SETREP);
+
+			return 0;
+	}
+
+	return -1;
+}
+
+/*
+ * atkbd_enable() signals that interrupt handler is allowed to
+ * generate input events.
+ */
+
+static inline void atkbd_enable(struct atkbd *atkbd)
+{
+	serio_pause_rx(atkbd->ps2dev.serio);
+	atkbd->enabled = 1;
+	serio_continue_rx(atkbd->ps2dev.serio);
+}
+
+/*
+ * atkbd_disable() tells input handler that all incoming data except
+ * for ACKs and command response should be dropped.
+ */
+
+static inline void atkbd_disable(struct atkbd *atkbd)
+{
+	serio_pause_rx(atkbd->ps2dev.serio);
+	atkbd->enabled = 0;
+	serio_continue_rx(atkbd->ps2dev.serio);
+}
+
+/*
+ * atkbd_probe() probes for an AT keyboard on a serio port.
+ */
+
+static int atkbd_probe(struct atkbd *atkbd)
+{
+	struct ps2dev *ps2dev = &atkbd->ps2dev;
+	unsigned char param[2];
+
+/*
+ * Some systems, where the bit-twiddling when testing the io-lines of the
+ * controller may confuse the keyboard need a full reset of the keyboard. On
+ * these systems the BIOS also usually doesn't do it for us.
+ */
+
+	if (atkbd_reset)
+		if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
+			printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
+
+/*
+ * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
+ * Some keyboards report different values, but the first byte is always 0xab or
+ * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
+ * should make sure we don't try to set the LEDs on it.
+ */
+
+	param[0] = param[1] = 0xa5;	/* initialize with invalid values */
+	if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
+
+/*
+ * If the get ID command failed, we check if we can at least set the LEDs on
+ * the keyboard. This should work on every keyboard out there. It also turns
+ * the LEDs off, which we want anyway.
+ */
+		param[0] = 0;
+		if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
+			return -1;
+		atkbd->id = 0xabba;
+		return 0;
+	}
+
+	if (param[0] != 0xab && param[0] != 0xac &&	/* Regular and NCD Sun keyboards */
+	    param[0] != 0x2b && param[0] != 0x5d &&	/* Trust keyboard, raw and translated */
+	    param[0] != 0x60 && param[0] != 0x47)	/* NMB SGI keyboard, raw and translated */
+		return -1;
+
+	atkbd->id = (param[0] << 8) | param[1];
+
+	if (atkbd->id == 0xaca1 && atkbd->translated) {
+		printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
+		printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * atkbd_select_set checks if a keyboard has a working Set 3 support, and
+ * sets it into that. Unfortunately there are keyboards that can be switched
+ * to Set 3, but don't work well in that (BTC Multimedia ...)
+ */
+
+static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
+{
+	struct ps2dev *ps2dev = &atkbd->ps2dev;
+	unsigned char param[2];
+
+	atkbd->extra = 0;
+/*
+ * For known special keyboards we can go ahead and set the correct set.
+ * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
+ * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
+ */
+
+	if (atkbd->translated)
+		return 2;
+
+	if (atkbd->id == 0xaca1) {
+		param[0] = 3;
+		ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
+		return 3;
+	}
+
+	if (allow_extra) {
+		param[0] = 0x71;
+		if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
+			atkbd->extra = 1;
+			return 2;
+		}
+	}
+
+	if (target_set != 3)
+		return 2;
+
+	if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
+		atkbd->id = param[0] << 8 | param[1];
+		return 2;
+	}
+
+	param[0] = 3;
+	if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
+		return 2;
+
+	param[0] = 0;
+	if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
+		return 2;
+
+	if (param[0] != 3) {
+		param[0] = 2;
+		if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
+		return 2;
+	}
+
+	ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
+
+	return 3;
+}
+
+static int atkbd_activate(struct atkbd *atkbd)
+{
+	struct ps2dev *ps2dev = &atkbd->ps2dev;
+	unsigned char param[1];
+
+/*
+ * Set the LEDs to a defined state.
+ */
+
+	param[0] = 0;
+	if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
+		return -1;
+
+/*
+ * Set autorepeat to fastest possible.
+ */
+
+	param[0] = 0;
+	if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
+		return -1;
+
+/*
+ * Enable the keyboard to receive keystrokes.
+ */
+
+	if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
+		printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
+			ps2dev->serio->phys);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
+ * reboot.
+ */
+
+static void atkbd_cleanup(struct serio *serio)
+{
+	struct atkbd *atkbd = serio_get_drvdata(serio);
+	ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
+}
+
+
+/*
+ * atkbd_disconnect() closes and frees.
+ */
+
+static void atkbd_disconnect(struct serio *serio)
+{
+	struct atkbd *atkbd = serio_get_drvdata(serio);
+
+	atkbd_disable(atkbd);
+
+	/* make sure we don't have a command in flight */
+	synchronize_kernel();
+	flush_scheduled_work();
+
+	device_remove_file(&serio->dev, &atkbd_attr_extra);
+	device_remove_file(&serio->dev, &atkbd_attr_scroll);
+	device_remove_file(&serio->dev, &atkbd_attr_set);
+	device_remove_file(&serio->dev, &atkbd_attr_softrepeat);
+	device_remove_file(&serio->dev, &atkbd_attr_softraw);
+
+	input_unregister_device(&atkbd->dev);
+	serio_close(serio);
+	serio_set_drvdata(serio, NULL);
+	kfree(atkbd);
+}
+
+
+/*
+ * atkbd_set_device_attrs() initializes keyboard's keycode table
+ * according to the selected scancode set
+ */
+
+static void atkbd_set_keycode_table(struct atkbd *atkbd)
+{
+	int i, j;
+
+	memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
+
+	if (atkbd->translated) {
+		for (i = 0; i < 128; i++) {
+			atkbd->keycode[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
+			atkbd->keycode[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
+			if (atkbd->scroll)
+				for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
+					if ((atkbd_unxlate_table[i] | 0x80) == atkbd_scroll_keys[j].set2)
+						atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
+		}
+	} else if (atkbd->set == 3) {
+		memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
+	} else {
+		memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
+
+		if (atkbd->scroll)
+			for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++)
+				atkbd->keycode[atkbd_scroll_keys[i].set2] = atkbd_scroll_keys[i].keycode;
+	}
+}
+
+/*
+ * atkbd_set_device_attrs() sets up keyboard's input device structure
+ */
+
+static void atkbd_set_device_attrs(struct atkbd *atkbd)
+{
+	int i;
+
+	memset(&atkbd->dev, 0, sizeof(struct input_dev));
+
+	init_input_dev(&atkbd->dev);
+
+	atkbd->dev.name = atkbd->name;
+	atkbd->dev.phys = atkbd->phys;
+	atkbd->dev.id.bustype = BUS_I8042;
+	atkbd->dev.id.vendor = 0x0001;
+	atkbd->dev.id.product = atkbd->translated ? 1 : atkbd->set;
+	atkbd->dev.id.version = atkbd->id;
+	atkbd->dev.event = atkbd_event;
+	atkbd->dev.private = atkbd;
+	atkbd->dev.dev = &atkbd->ps2dev.serio->dev;
+
+	atkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_MSC);
+
+	if (atkbd->write) {
+		atkbd->dev.evbit[0] |= BIT(EV_LED);
+		atkbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
+	}
+
+	if (atkbd->extra)
+		atkbd->dev.ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) |
+					BIT(LED_SLEEP) | BIT(LED_MUTE) | BIT(LED_MISC);
+
+	if (!atkbd->softrepeat) {
+		atkbd->dev.rep[REP_DELAY] = 250;
+		atkbd->dev.rep[REP_PERIOD] = 33;
+	}
+
+	atkbd->dev.mscbit[0] = atkbd->softraw ? BIT(MSC_SCAN) : BIT(MSC_RAW) | BIT(MSC_SCAN);
+
+	if (atkbd->scroll) {
+		atkbd->dev.evbit[0] |= BIT(EV_REL);
+		atkbd->dev.relbit[0] = BIT(REL_WHEEL) | BIT(REL_HWHEEL);
+		set_bit(BTN_MIDDLE, atkbd->dev.keybit);
+	}
+
+	atkbd->dev.keycode = atkbd->keycode;
+	atkbd->dev.keycodesize = sizeof(unsigned char);
+	atkbd->dev.keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
+
+	for (i = 0; i < 512; i++)
+		if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
+			set_bit(atkbd->keycode[i], atkbd->dev.keybit);
+}
+
+/*
+ * atkbd_connect() is called when the serio module finds an interface
+ * that isn't handled yet by an appropriate device driver. We check if
+ * there is an AT keyboard out there and if yes, we register ourselves
+ * to the input module.
+ */
+
+static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct atkbd *atkbd;
+	int err;
+
+	if (!(atkbd = kmalloc(sizeof(struct atkbd), GFP_KERNEL)))
+		return - ENOMEM;
+
+	memset(atkbd, 0, sizeof(struct atkbd));
+
+	ps2_init(&atkbd->ps2dev, serio);
+
+	switch (serio->id.type) {
+
+		case SERIO_8042_XL:
+			atkbd->translated = 1;
+		case SERIO_8042:
+			if (serio->write)
+				atkbd->write = 1;
+			break;
+	}
+
+	atkbd->softraw = atkbd_softraw;
+	atkbd->softrepeat = atkbd_softrepeat;
+	atkbd->scroll = atkbd_scroll;
+
+	if (!atkbd->write)
+		atkbd->softrepeat = 1;
+
+	if (atkbd->softrepeat)
+		atkbd->softraw = 1;
+
+	serio_set_drvdata(serio, atkbd);
+
+	err = serio_open(serio, drv);
+	if (err) {
+		serio_set_drvdata(serio, NULL);
+		kfree(atkbd);
+		return err;
+	}
+
+	if (atkbd->write) {
+
+		if (atkbd_probe(atkbd)) {
+			serio_close(serio);
+			serio_set_drvdata(serio, NULL);
+			kfree(atkbd);
+			return -ENODEV;
+		}
+
+		atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
+		atkbd_activate(atkbd);
+
+	} else {
+		atkbd->set = 2;
+		atkbd->id = 0xab00;
+	}
+
+	if (atkbd->extra)
+		sprintf(atkbd->name, "AT Set 2 Extra keyboard");
+	else
+		sprintf(atkbd->name, "AT %s Set %d keyboard",
+			atkbd->translated ? "Translated" : "Raw", atkbd->set);
+
+	sprintf(atkbd->phys, "%s/input0", serio->phys);
+
+	atkbd_set_keycode_table(atkbd);
+	atkbd_set_device_attrs(atkbd);
+
+	input_register_device(&atkbd->dev);
+
+	device_create_file(&serio->dev, &atkbd_attr_extra);
+	device_create_file(&serio->dev, &atkbd_attr_scroll);
+	device_create_file(&serio->dev, &atkbd_attr_set);
+	device_create_file(&serio->dev, &atkbd_attr_softrepeat);
+	device_create_file(&serio->dev, &atkbd_attr_softraw);
+
+	atkbd_enable(atkbd);
+
+	printk(KERN_INFO "input: %s on %s\n", atkbd->name, serio->phys);
+
+	return 0;
+}
+
+/*
+ * atkbd_reconnect() tries to restore keyboard into a sane state and is
+ * most likely called on resume.
+ */
+
+static int atkbd_reconnect(struct serio *serio)
+{
+	struct atkbd *atkbd = serio_get_drvdata(serio);
+	struct serio_driver *drv = serio->drv;
+	unsigned char param[1];
+
+	if (!atkbd || !drv) {
+		printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
+		return -1;
+	}
+
+	atkbd_disable(atkbd);
+
+	if (atkbd->write) {
+		param[0] = (test_bit(LED_SCROLLL, atkbd->dev.led) ? 1 : 0)
+		         | (test_bit(LED_NUML,    atkbd->dev.led) ? 2 : 0)
+ 		         | (test_bit(LED_CAPSL,   atkbd->dev.led) ? 4 : 0);
+
+		if (atkbd_probe(atkbd))
+			return -1;
+		if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
+			return -1;
+
+		atkbd_activate(atkbd);
+
+		if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
+			return -1;
+	}
+
+	atkbd_enable(atkbd);
+
+	return 0;
+}
+
+static struct serio_device_id atkbd_serio_ids[] = {
+	{
+		.type	= SERIO_8042,
+		.proto	= SERIO_ANY,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{
+		.type	= SERIO_8042_XL,
+		.proto	= SERIO_ANY,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_PS2SER,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
+
+static struct serio_driver atkbd_drv = {
+	.driver		= {
+		.name	= "atkbd",
+	},
+	.description	= DRIVER_DESC,
+	.id_table	= atkbd_serio_ids,
+	.interrupt	= atkbd_interrupt,
+	.connect	= atkbd_connect,
+	.reconnect	= atkbd_reconnect,
+	.disconnect	= atkbd_disconnect,
+	.cleanup	= atkbd_cleanup,
+};
+
+static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
+				ssize_t (*handler)(struct atkbd *, char *))
+{
+	struct serio *serio = to_serio_port(dev);
+	int retval;
+
+	retval = serio_pin_driver(serio);
+	if (retval)
+		return retval;
+
+	if (serio->drv != &atkbd_drv) {
+		retval = -ENODEV;
+		goto out;
+	}
+
+	retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
+
+out:
+	serio_unpin_driver(serio);
+	return retval;
+}
+
+static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
+				ssize_t (*handler)(struct atkbd *, const char *, size_t))
+{
+	struct serio *serio = to_serio_port(dev);
+	struct atkbd *atkbd;
+	int retval;
+
+	retval = serio_pin_driver(serio);
+	if (retval)
+		return retval;
+
+	if (serio->drv != &atkbd_drv) {
+		retval = -ENODEV;
+		goto out;
+	}
+
+	atkbd = serio_get_drvdata(serio);
+	atkbd_disable(atkbd);
+	retval = handler(atkbd, buf, count);
+	atkbd_enable(atkbd);
+
+out:
+	serio_unpin_driver(serio);
+	return retval;
+}
+
+static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
+{
+	return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
+}
+
+static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
+{
+	unsigned long value;
+	char *rest;
+
+	if (!atkbd->write)
+		return -EIO;
+
+	value = simple_strtoul(buf, &rest, 10);
+	if (*rest || value > 1)
+		return -EINVAL;
+
+	if (atkbd->extra != value) {
+		/* unregister device as it's properties will change */
+		input_unregister_device(&atkbd->dev);
+		atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
+		atkbd_activate(atkbd);
+		atkbd_set_device_attrs(atkbd);
+		input_register_device(&atkbd->dev);
+	}
+	return count;
+}
+
+static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
+{
+	return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
+}
+
+static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
+{
+	unsigned long value;
+	char *rest;
+
+	value = simple_strtoul(buf, &rest, 10);
+	if (*rest || value > 1)
+		return -EINVAL;
+
+	if (atkbd->scroll != value) {
+		/* unregister device as it's properties will change */
+		input_unregister_device(&atkbd->dev);
+		atkbd->scroll = value;
+		atkbd_set_keycode_table(atkbd);
+		atkbd_set_device_attrs(atkbd);
+		input_register_device(&atkbd->dev);
+	}
+	return count;
+}
+
+static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
+{
+	return sprintf(buf, "%d\n", atkbd->set);
+}
+
+static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
+{
+	unsigned long value;
+	char *rest;
+
+	if (!atkbd->write)
+		return -EIO;
+
+	value = simple_strtoul(buf, &rest, 10);
+	if (*rest || (value != 2 && value != 3))
+		return -EINVAL;
+
+	if (atkbd->set != value) {
+		/* unregister device as it's properties will change */
+		input_unregister_device(&atkbd->dev);
+		atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
+		atkbd_activate(atkbd);
+		atkbd_set_keycode_table(atkbd);
+		atkbd_set_device_attrs(atkbd);
+		input_register_device(&atkbd->dev);
+	}
+	return count;
+}
+
+static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
+{
+	return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
+}
+
+static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
+{
+	unsigned long value;
+	char *rest;
+
+	if (!atkbd->write)
+		return -EIO;
+
+	value = simple_strtoul(buf, &rest, 10);
+	if (*rest || value > 1)
+		return -EINVAL;
+
+	if (atkbd->softrepeat != value) {
+		/* unregister device as it's properties will change */
+		input_unregister_device(&atkbd->dev);
+		atkbd->softrepeat = value;
+		if (atkbd->softrepeat)
+			atkbd->softraw = 1;
+		atkbd_set_device_attrs(atkbd);
+		input_register_device(&atkbd->dev);
+	}
+
+	return count;
+}
+
+
+static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
+{
+	return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
+}
+
+static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
+{
+	unsigned long value;
+	char *rest;
+
+	value = simple_strtoul(buf, &rest, 10);
+	if (*rest || value > 1)
+		return -EINVAL;
+
+	if (atkbd->softraw != value) {
+		/* unregister device as it's properties will change */
+		input_unregister_device(&atkbd->dev);
+		atkbd->softraw = value;
+		atkbd_set_device_attrs(atkbd);
+		input_register_device(&atkbd->dev);
+	}
+	return count;
+}
+
+
+static int __init atkbd_init(void)
+{
+	serio_register_driver(&atkbd_drv);
+	return 0;
+}
+
+static void __exit atkbd_exit(void)
+{
+	serio_unregister_driver(&atkbd_drv);
+}
+
+module_init(atkbd_init);
+module_exit(atkbd_exit);