Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1287 insertions, 0 deletions

diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c
new file mode 100644
index 000000000..a261892c0
--- /dev/null
+++ b/drivers/macintosh/adbhid.c
@@ -0,0 +1,1287 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * drivers/macintosh/adbhid.c
+ *
+ * ADB HID driver for Power Macintosh computers.
+ *
+ * Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl.
+ * drivers/macintosh/mac_keyb.c was Copyright (C) 1996 Paul Mackerras
+ * with considerable contributions from Ben Herrenschmidt and others.
+ *
+ * Copyright (C) 2000 Franz Sirl.
+ *
+ * Adapted to ADB changes and support for more devices by
+ * Benjamin Herrenschmidt. Adapted from code in MkLinux
+ * and reworked.
+ * 
+ * Supported devices:
+ *
+ * - Standard 1 button mouse
+ * - All standard Apple Extended protocol (handler ID 4)
+ * - mouseman and trackman mice & trackballs 
+ * - PowerBook Trackpad (default setup: enable tapping)
+ * - MicroSpeed mouse & trackball (needs testing)
+ * - CH Products Trackball Pro (needs testing)
+ * - Contour Design (Contour Mouse)
+ * - Hunter digital (NoHandsMouse)
+ * - Kensignton TurboMouse 5 (needs testing)
+ * - Mouse Systems A3 mice and trackballs <aidan@kublai.com>
+ * - MacAlly 2-buttons mouse (needs testing) <pochini@denise.shiny.it>
+ *
+ * To do:
+ *
+ * Improve Kensington support.
+ * Split mouse/kbd
+ * Move to syfs
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/notifier.h>
+#include <linux/input.h>
+
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+
+#include <asm/machdep.h>
+#ifdef CONFIG_PPC_PMAC
+#include <asm/backlight.h>
+#include <asm/pmac_feature.h>
+#endif
+
+MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
+
+static int restore_capslock_events;
+module_param(restore_capslock_events, int, 0644);
+MODULE_PARM_DESC(restore_capslock_events,
+	"Produce keypress events for capslock on both keyup and keydown.");
+
+#define KEYB_KEYREG	0	/* register # for key up/down data */
+#define KEYB_LEDREG	2	/* register # for leds on ADB keyboard */
+#define MOUSE_DATAREG	0	/* reg# for movement/button codes from mouse */
+
+static int adb_message_handler(struct notifier_block *, unsigned long, void *);
+static struct notifier_block adbhid_adb_notifier = {
+	.notifier_call	= adb_message_handler,
+};
+
+/* Some special keys */
+#define ADB_KEY_DEL		0x33
+#define ADB_KEY_CMD		0x37
+#define ADB_KEY_CAPSLOCK	0x39
+#define ADB_KEY_FN		0x3f
+#define ADB_KEY_FWDEL		0x75
+#define ADB_KEY_POWER_OLD	0x7e
+#define ADB_KEY_POWER		0x7f
+
+static const u16 adb_to_linux_keycodes[128] = {
+	/* 0x00 */ KEY_A, 		/*  30 */
+	/* 0x01 */ KEY_S, 		/*  31 */
+	/* 0x02 */ KEY_D,		/*  32 */
+	/* 0x03 */ KEY_F,		/*  33 */
+	/* 0x04 */ KEY_H,		/*  35 */
+	/* 0x05 */ KEY_G,		/*  34 */
+	/* 0x06 */ KEY_Z,		/*  44 */
+	/* 0x07 */ KEY_X,		/*  45 */
+	/* 0x08 */ KEY_C,		/*  46 */
+	/* 0x09 */ KEY_V,		/*  47 */
+	/* 0x0a */ KEY_102ND,		/*  86 */
+	/* 0x0b */ KEY_B,		/*  48 */
+	/* 0x0c */ KEY_Q,		/*  16 */
+	/* 0x0d */ KEY_W,		/*  17 */
+	/* 0x0e */ KEY_E,		/*  18 */
+	/* 0x0f */ KEY_R,		/*  19 */
+	/* 0x10 */ KEY_Y,		/*  21 */
+	/* 0x11 */ KEY_T,		/*  20 */
+	/* 0x12 */ KEY_1,		/*   2 */
+	/* 0x13 */ KEY_2,		/*   3 */
+	/* 0x14 */ KEY_3,		/*   4 */
+	/* 0x15 */ KEY_4,		/*   5 */
+	/* 0x16 */ KEY_6,		/*   7 */
+	/* 0x17 */ KEY_5,		/*   6 */
+	/* 0x18 */ KEY_EQUAL,		/*  13 */
+	/* 0x19 */ KEY_9,		/*  10 */
+	/* 0x1a */ KEY_7,		/*   8 */
+	/* 0x1b */ KEY_MINUS,		/*  12 */
+	/* 0x1c */ KEY_8,		/*   9 */
+	/* 0x1d */ KEY_0,		/*  11 */
+	/* 0x1e */ KEY_RIGHTBRACE,	/*  27 */
+	/* 0x1f */ KEY_O,		/*  24 */
+	/* 0x20 */ KEY_U,		/*  22 */
+	/* 0x21 */ KEY_LEFTBRACE,	/*  26 */
+	/* 0x22 */ KEY_I,		/*  23 */
+	/* 0x23 */ KEY_P,		/*  25 */
+	/* 0x24 */ KEY_ENTER,		/*  28 */
+	/* 0x25 */ KEY_L,		/*  38 */
+	/* 0x26 */ KEY_J,		/*  36 */
+	/* 0x27 */ KEY_APOSTROPHE,	/*  40 */
+	/* 0x28 */ KEY_K,		/*  37 */
+	/* 0x29 */ KEY_SEMICOLON,	/*  39 */
+	/* 0x2a */ KEY_BACKSLASH,	/*  43 */
+	/* 0x2b */ KEY_COMMA,		/*  51 */
+	/* 0x2c */ KEY_SLASH,		/*  53 */
+	/* 0x2d */ KEY_N,		/*  49 */
+	/* 0x2e */ KEY_M,		/*  50 */
+	/* 0x2f */ KEY_DOT,		/*  52 */
+	/* 0x30 */ KEY_TAB,		/*  15 */
+	/* 0x31 */ KEY_SPACE,		/*  57 */
+	/* 0x32 */ KEY_GRAVE,		/*  41 */
+	/* 0x33 */ KEY_BACKSPACE,	/*  14 */
+	/* 0x34 */ KEY_KPENTER,		/*  96 */
+	/* 0x35 */ KEY_ESC,		/*   1 */
+	/* 0x36 */ KEY_LEFTCTRL,	/*  29 */
+	/* 0x37 */ KEY_LEFTMETA,	/* 125 */
+	/* 0x38 */ KEY_LEFTSHIFT,	/*  42 */
+	/* 0x39 */ KEY_CAPSLOCK,	/*  58 */
+	/* 0x3a */ KEY_LEFTALT,		/*  56 */
+	/* 0x3b */ KEY_LEFT,		/* 105 */
+	/* 0x3c */ KEY_RIGHT,		/* 106 */
+	/* 0x3d */ KEY_DOWN,		/* 108 */
+	/* 0x3e */ KEY_UP,		/* 103 */
+	/* 0x3f */ KEY_FN,		/* 0x1d0 */
+	/* 0x40 */ 0,
+	/* 0x41 */ KEY_KPDOT,		/*  83 */
+	/* 0x42 */ 0,
+	/* 0x43 */ KEY_KPASTERISK,	/*  55 */
+	/* 0x44 */ 0,
+	/* 0x45 */ KEY_KPPLUS,		/*  78 */
+	/* 0x46 */ 0,
+	/* 0x47 */ KEY_NUMLOCK,		/*  69 */
+	/* 0x48 */ 0,
+	/* 0x49 */ 0,
+	/* 0x4a */ 0,
+	/* 0x4b */ KEY_KPSLASH,		/*  98 */
+	/* 0x4c */ KEY_KPENTER,		/*  96 */
+	/* 0x4d */ 0,
+	/* 0x4e */ KEY_KPMINUS,		/*  74 */
+	/* 0x4f */ 0,
+	/* 0x50 */ 0,
+	/* 0x51 */ KEY_KPEQUAL,		/* 117 */
+	/* 0x52 */ KEY_KP0,		/*  82 */
+	/* 0x53 */ KEY_KP1,		/*  79 */
+	/* 0x54 */ KEY_KP2,		/*  80 */
+	/* 0x55 */ KEY_KP3,		/*  81 */
+	/* 0x56 */ KEY_KP4,		/*  75 */
+	/* 0x57 */ KEY_KP5,		/*  76 */
+	/* 0x58 */ KEY_KP6,		/*  77 */
+	/* 0x59 */ KEY_KP7,		/*  71 */
+	/* 0x5a */ 0,
+	/* 0x5b */ KEY_KP8,		/*  72 */
+	/* 0x5c */ KEY_KP9,		/*  73 */
+	/* 0x5d */ KEY_YEN,		/* 124 */
+	/* 0x5e */ KEY_RO,		/*  89 */
+	/* 0x5f */ KEY_KPCOMMA,		/* 121 */
+	/* 0x60 */ KEY_F5,		/*  63 */
+	/* 0x61 */ KEY_F6,		/*  64 */
+	/* 0x62 */ KEY_F7,		/*  65 */
+	/* 0x63 */ KEY_F3,		/*  61 */
+	/* 0x64 */ KEY_F8,		/*  66 */
+	/* 0x65 */ KEY_F9,		/*  67 */
+	/* 0x66 */ KEY_HANJA,		/* 123 */
+	/* 0x67 */ KEY_F11,		/*  87 */
+	/* 0x68 */ KEY_HANGEUL,		/* 122 */
+	/* 0x69 */ KEY_SYSRQ,		/*  99 */
+	/* 0x6a */ 0,
+	/* 0x6b */ KEY_SCROLLLOCK,	/*  70 */
+	/* 0x6c */ 0,
+	/* 0x6d */ KEY_F10,		/*  68 */
+	/* 0x6e */ KEY_COMPOSE,		/* 127 */
+	/* 0x6f */ KEY_F12,		/*  88 */
+	/* 0x70 */ 0,
+	/* 0x71 */ KEY_PAUSE,		/* 119 */
+	/* 0x72 */ KEY_INSERT,		/* 110 */
+	/* 0x73 */ KEY_HOME,		/* 102 */
+	/* 0x74 */ KEY_PAGEUP,		/* 104 */
+	/* 0x75 */ KEY_DELETE,		/* 111 */
+	/* 0x76 */ KEY_F4,		/*  62 */
+	/* 0x77 */ KEY_END,		/* 107 */
+	/* 0x78 */ KEY_F2,		/*  60 */
+	/* 0x79 */ KEY_PAGEDOWN,	/* 109 */
+	/* 0x7a */ KEY_F1,		/*  59 */
+	/* 0x7b */ KEY_RIGHTSHIFT,	/*  54 */
+	/* 0x7c */ KEY_RIGHTALT,	/* 100 */
+	/* 0x7d */ KEY_RIGHTCTRL,	/*  97 */
+	/* 0x7e */ KEY_RIGHTMETA,	/* 126 */
+	/* 0x7f */ KEY_POWER,		/* 116 */
+};
+
+struct adbhid {
+	struct input_dev *input;
+	int id;
+	int default_id;
+	int original_handler_id;
+	int current_handler_id;
+	int mouse_kind;
+	u16 *keycode;
+	char name[64];
+	char phys[32];
+	int flags;
+};
+
+#define FLAG_FN_KEY_PRESSED		0x00000001
+#define FLAG_POWER_FROM_FN		0x00000002
+#define FLAG_EMU_FWDEL_DOWN		0x00000004
+#define FLAG_CAPSLOCK_TRANSLATE		0x00000008
+#define FLAG_CAPSLOCK_DOWN		0x00000010
+#define FLAG_CAPSLOCK_IGNORE_NEXT	0x00000020
+#define FLAG_POWER_KEY_PRESSED		0x00000040
+
+static struct adbhid *adbhid[16];
+
+static void adbhid_probe(void);
+
+static void adbhid_input_keycode(int, int, int);
+
+static void init_trackpad(int id);
+static void init_trackball(int id);
+static void init_turbomouse(int id);
+static void init_microspeed(int id);
+static void init_ms_a3(int id);
+
+static struct adb_ids keyboard_ids;
+static struct adb_ids mouse_ids;
+static struct adb_ids buttons_ids;
+
+/* Kind of keyboard, see Apple technote 1152  */
+#define ADB_KEYBOARD_UNKNOWN	0
+#define ADB_KEYBOARD_ANSI	0x0100
+#define ADB_KEYBOARD_ISO	0x0200
+#define ADB_KEYBOARD_JIS	0x0300
+
+/* Kind of mouse  */
+#define ADBMOUSE_STANDARD_100	0	/* Standard 100cpi mouse (handler 1) */
+#define ADBMOUSE_STANDARD_200	1	/* Standard 200cpi mouse (handler 2) */
+#define ADBMOUSE_EXTENDED	2	/* Apple Extended mouse (handler 4) */
+#define ADBMOUSE_TRACKBALL	3	/* TrackBall (handler 4) */
+#define ADBMOUSE_TRACKPAD       4	/* Apple's PowerBook trackpad (handler 4) */
+#define ADBMOUSE_TURBOMOUSE5    5	/* Turbomouse 5 (previously req. mousehack) */
+#define ADBMOUSE_MICROSPEED	6	/* Microspeed mouse (&trackball ?), MacPoint */
+#define ADBMOUSE_TRACKBALLPRO	7	/* Trackball Pro (special buttons) */
+#define ADBMOUSE_MS_A3		8	/* Mouse systems A3 trackball (handler 3) */
+#define ADBMOUSE_MACALLY2	9	/* MacAlly 2-button mouse */
+
+static void
+adbhid_keyboard_input(unsigned char *data, int nb, int apoll)
+{
+	int id = (data[0] >> 4) & 0x0f;
+
+	if (!adbhid[id]) {
+		pr_err("ADB HID on ID %d not yet registered, packet %#02x, %#02x, %#02x, %#02x\n",
+		       id, data[0], data[1], data[2], data[3]);
+		return;
+	}
+
+	/* first check this is from register 0 */
+	if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
+		return;		/* ignore it */
+	adbhid_input_keycode(id, data[1], 0);
+	if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
+		adbhid_input_keycode(id, data[2], 0);
+}
+
+static void
+adbhid_input_keycode(int id, int scancode, int repeat)
+{
+	struct adbhid *ahid = adbhid[id];
+	int keycode, up_flag, key;
+
+	keycode = scancode & 0x7f;
+	up_flag = scancode & 0x80;
+
+	if (restore_capslock_events) {
+		if (keycode == ADB_KEY_CAPSLOCK && !up_flag) {
+			/* Key pressed, turning on the CapsLock LED.
+			 * The next 0xff will be interpreted as a release. */
+			if (ahid->flags & FLAG_CAPSLOCK_IGNORE_NEXT) {
+				/* Throw away this key event if it happens
+				 * just after resume. */
+				ahid->flags &= ~FLAG_CAPSLOCK_IGNORE_NEXT;
+				return;
+			} else {
+				ahid->flags |= FLAG_CAPSLOCK_TRANSLATE
+					| FLAG_CAPSLOCK_DOWN;
+			}
+		} else if (scancode == 0xff &&
+			   !(ahid->flags & FLAG_POWER_KEY_PRESSED)) {
+			/* Scancode 0xff usually signifies that the capslock
+			 * key was either pressed or released, or that the
+			 * power button was released. */
+			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) {
+				keycode = ADB_KEY_CAPSLOCK;
+				if (ahid->flags & FLAG_CAPSLOCK_DOWN) {
+					/* Key released */
+					up_flag = 1;
+					ahid->flags &= ~FLAG_CAPSLOCK_DOWN;
+				} else {
+					/* Key pressed */
+					up_flag = 0;
+					ahid->flags &= ~FLAG_CAPSLOCK_TRANSLATE;
+				}
+			} else {
+				pr_info("Spurious caps lock event (scancode 0xff).\n");
+			}
+		}
+	}
+
+	switch (keycode) {
+	case ADB_KEY_CAPSLOCK:
+		if (!restore_capslock_events) {
+			/* Generate down/up events for CapsLock every time. */
+			input_report_key(ahid->input, KEY_CAPSLOCK, 1);
+			input_sync(ahid->input);
+			input_report_key(ahid->input, KEY_CAPSLOCK, 0);
+			input_sync(ahid->input);
+			return;
+		}
+		break;
+#ifdef CONFIG_PPC_PMAC
+	case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
+		switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
+			NULL, PMAC_MB_INFO_MODEL, 0)) {
+		case PMAC_TYPE_COMET:
+		case PMAC_TYPE_HOOPER:
+		case PMAC_TYPE_KANGA:
+			keycode = ADB_KEY_POWER;
+		}
+		break;
+	case ADB_KEY_POWER:
+		/* Keep track of the power key state */
+		if (up_flag)
+			ahid->flags &= ~FLAG_POWER_KEY_PRESSED;
+		else
+			ahid->flags |= FLAG_POWER_KEY_PRESSED;
+
+		/* Fn + Command will produce a bogus "power" keycode */
+		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
+			keycode = ADB_KEY_CMD;
+			if (up_flag)
+				ahid->flags &= ~FLAG_POWER_FROM_FN;
+			else
+				ahid->flags |= FLAG_POWER_FROM_FN;
+		} else if (ahid->flags & FLAG_POWER_FROM_FN) {
+			keycode = ADB_KEY_CMD;
+			ahid->flags &= ~FLAG_POWER_FROM_FN;
+		}
+		break;
+	case ADB_KEY_FN:
+		/* Keep track of the Fn key state */
+		if (up_flag) {
+			ahid->flags &= ~FLAG_FN_KEY_PRESSED;
+			/* Emulate Fn+delete = forward delete */
+			if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
+				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
+				keycode = ADB_KEY_FWDEL;
+				break;
+			}
+		} else
+			ahid->flags |= FLAG_FN_KEY_PRESSED;
+		break;
+	case ADB_KEY_DEL:
+		/* Emulate Fn+delete = forward delete */
+		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
+			keycode = ADB_KEY_FWDEL;
+			if (up_flag)
+				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
+			else
+				ahid->flags |= FLAG_EMU_FWDEL_DOWN;
+		}
+		break;
+#endif /* CONFIG_PPC_PMAC */
+	}
+
+	key = adbhid[id]->keycode[keycode];
+	if (key) {
+		input_report_key(adbhid[id]->input, key, !up_flag);
+		input_sync(adbhid[id]->input);
+	} else
+		pr_info("Unhandled ADB key (scancode %#02x) %s.\n", keycode,
+			up_flag ? "released" : "pressed");
+
+}
+
+static void
+adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
+{
+	int id = (data[0] >> 4) & 0x0f;
+
+	if (!adbhid[id]) {
+		pr_err("ADB HID on ID %d not yet registered\n", id);
+		return;
+	}
+
+  /*
+    Handler 1 -- 100cpi original Apple mouse protocol.
+    Handler 2 -- 200cpi original Apple mouse protocol.
+
+    For Apple's standard one-button mouse protocol the data array will
+    contain the following values:
+
+                BITS    COMMENTS
+    data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+    data[1] = bxxx xxxx First button and x-axis motion.
+    data[2] = byyy yyyy Second button and y-axis motion.
+
+    Handler 4 -- Apple Extended mouse protocol.
+
+    For Apple's 3-button mouse protocol the data array will contain the
+    following values:
+
+		BITS    COMMENTS
+    data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+    data[1] = bxxx xxxx Left button and x-axis motion.
+    data[2] = byyy yyyy Second button and y-axis motion.
+    data[3] = byyy bxxx Third button and fourth button.  Y is additional
+	      high bits of y-axis motion.  XY is additional
+	      high bits of x-axis motion.
+
+    MacAlly 2-button mouse protocol.
+
+    For MacAlly 2-button mouse protocol the data array will contain the
+    following values:
+
+		BITS    COMMENTS
+    data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+    data[1] = bxxx xxxx Left button and x-axis motion.
+    data[2] = byyy yyyy Right button and y-axis motion.
+    data[3] = ???? ???? unknown
+    data[4] = ???? ???? unknown
+
+  */
+
+	/* If it's a trackpad, we alias the second button to the first.
+	   NOTE: Apple sends an ADB flush command to the trackpad when
+	         the first (the real) button is released. We could do
+		 this here using async flush requests.
+	*/
+	switch (adbhid[id]->mouse_kind)
+	{
+	    case ADBMOUSE_TRACKPAD:
+		data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
+		data[2] = data[2] | 0x80;
+		break;
+	    case ADBMOUSE_MICROSPEED:
+		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
+		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
+		data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
+			| (data[3] & 0x08);
+		break;
+	    case ADBMOUSE_TRACKBALLPRO:
+		data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
+			& ((data[3] & 0x08) << 4));
+		data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
+		data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
+		break;
+	    case ADBMOUSE_MS_A3:
+		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
+		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
+		data[3] = ((data[3] & 0x04) << 5);
+		break;
+            case ADBMOUSE_MACALLY2:
+		data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
+		data[2] |= 0x80;  /* Right button is mapped as button 3 */
+		nb=4;
+                break;
+	}
+
+	input_report_key(adbhid[id]->input, BTN_LEFT,   !((data[1] >> 7) & 1));
+	input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
+
+	if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
+		input_report_key(adbhid[id]->input, BTN_RIGHT,  !((data[3] >> 7) & 1));
+
+	input_report_rel(adbhid[id]->input, REL_X,
+			 ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
+	input_report_rel(adbhid[id]->input, REL_Y,
+			 ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
+
+	input_sync(adbhid[id]->input);
+}
+
+static void
+adbhid_buttons_input(unsigned char *data, int nb, int autopoll)
+{
+	int id = (data[0] >> 4) & 0x0f;
+
+	if (!adbhid[id]) {
+		pr_err("ADB HID on ID %d not yet registered\n", id);
+		return;
+	}
+
+	switch (adbhid[id]->original_handler_id) {
+	default:
+	case 0x02: /* Adjustable keyboard button device */
+	  {
+		int down = (data[1] == (data[1] & 0xf));
+
+		switch (data[1] & 0x0f) {
+		case 0x0:	/* microphone */
+			input_report_key(adbhid[id]->input, KEY_SOUND, down);
+			break;
+
+		case 0x1:	/* mute */
+			input_report_key(adbhid[id]->input, KEY_MUTE, down);
+			break;
+
+		case 0x2:	/* volume decrease */
+			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
+			break;
+
+		case 0x3:	/* volume increase */
+			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
+			break;
+
+		default:
+			pr_info("Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
+				data[0], data[1], data[2], data[3]);
+			break;
+		}
+	  }
+	  break;
+
+	case 0x1f: /* Powerbook button device */
+	  {
+		int down = (data[1] == (data[1] & 0xf));
+
+		/*
+		 * XXX: Where is the contrast control for the passive?
+		 *  -- Cort
+		 */
+
+		switch (data[1] & 0x0f) {
+		case 0x8:	/* mute */
+			input_report_key(adbhid[id]->input, KEY_MUTE, down);
+			break;
+
+		case 0x7:	/* volume decrease */
+			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
+			break;
+
+		case 0x6:	/* volume increase */
+			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
+			break;
+
+		case 0xb:	/* eject */
+			input_report_key(adbhid[id]->input, KEY_EJECTCD, down);
+			break;
+
+		case 0xa:	/* brightness decrease */
+#ifdef CONFIG_PMAC_BACKLIGHT
+			if (down)
+				pmac_backlight_key_down();
+#endif
+			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
+			break;
+
+		case 0x9:	/* brightness increase */
+#ifdef CONFIG_PMAC_BACKLIGHT
+			if (down)
+				pmac_backlight_key_up();
+#endif
+			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSUP, down);
+			break;
+
+		case 0xc:	/* videomode switch */
+			input_report_key(adbhid[id]->input, KEY_SWITCHVIDEOMODE, down);
+			break;
+
+		case 0xd:	/* keyboard illumination toggle */
+			input_report_key(adbhid[id]->input, KEY_KBDILLUMTOGGLE, down);
+			break;
+
+		case 0xe:	/* keyboard illumination decrease */
+			input_report_key(adbhid[id]->input, KEY_KBDILLUMDOWN, down);
+			break;
+
+		case 0xf:
+			switch (data[1]) {
+			case 0x8f:
+			case 0x0f:
+				/* keyboard illumination increase */
+				input_report_key(adbhid[id]->input, KEY_KBDILLUMUP, down);
+				break;
+
+			case 0x7f:
+			case 0xff:
+				/* keypad overlay toogle */
+				break;
+
+			default:
+				pr_info("Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
+					data[0], data[1], data[2], data[3]);
+				break;
+			}
+			break;
+		default:
+			pr_info("Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
+				data[0], data[1], data[2], data[3]);
+			break;
+		}
+	  }
+	  break;
+	}
+
+	input_sync(adbhid[id]->input);
+}
+
+static struct adb_request led_request;
+static int leds_pending[16];
+static int leds_req_pending;
+static int pending_devs[16];
+static int pending_led_start;
+static int pending_led_end;
+static DEFINE_SPINLOCK(leds_lock);
+
+static void leds_done(struct adb_request *req)
+{
+	int leds = 0, device = 0, pending = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&leds_lock, flags);
+
+	if (pending_led_start != pending_led_end) {
+		device = pending_devs[pending_led_start];
+		leds = leds_pending[device] & 0xff;
+		leds_pending[device] = 0;
+		pending_led_start++;
+		pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
+		pending = leds_req_pending;
+	} else
+		leds_req_pending = 0;
+	spin_unlock_irqrestore(&leds_lock, flags);
+	if (pending)
+		adb_request(&led_request, leds_done, 0, 3,
+			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
+}
+
+static void real_leds(unsigned char leds, int device)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&leds_lock, flags);
+	if (!leds_req_pending) {
+		leds_req_pending = 1;
+		spin_unlock_irqrestore(&leds_lock, flags);	       
+		adb_request(&led_request, leds_done, 0, 3,
+			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
+		return;
+	} else {
+		if (!(leds_pending[device] & 0x100)) {
+			pending_devs[pending_led_end] = device;
+			pending_led_end++;
+			pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
+		}
+		leds_pending[device] = leds | 0x100;
+	}
+	spin_unlock_irqrestore(&leds_lock, flags);	       
+}
+
+/*
+ * Event callback from the input module. Events that change the state of
+ * the hardware are processed here.
+ */
+static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	struct adbhid *adbhid = input_get_drvdata(dev);
+	unsigned char leds;
+
+	switch (type) {
+	case EV_LED:
+		leds =  (test_bit(LED_SCROLLL, dev->led) ? 4 : 0) |
+			(test_bit(LED_NUML,    dev->led) ? 1 : 0) |
+			(test_bit(LED_CAPSL,   dev->led) ? 2 : 0);
+		real_leds(leds, adbhid->id);
+		return 0;
+	}
+
+	return -1;
+}
+
+static void
+adbhid_kbd_capslock_remember(void)
+{
+	struct adbhid *ahid;
+	int i;
+
+	for (i = 1; i < 16; i++) {
+		ahid = adbhid[i];
+
+		if (ahid && ahid->id == ADB_KEYBOARD)
+			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE)
+				ahid->flags |= FLAG_CAPSLOCK_IGNORE_NEXT;
+	}
+}
+
+static int
+adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
+{
+	switch (code) {
+	case ADB_MSG_PRE_RESET:
+	case ADB_MSG_POWERDOWN:
+		/* Stop the repeat timer. Autopoll is already off at this point */
+		{
+			int i;
+			for (i = 1; i < 16; i++) {
+				if (adbhid[i])
+					del_timer_sync(&adbhid[i]->input->timer);
+			}
+		}
+
+		/* Stop pending led requests */
+		while (leds_req_pending)
+			adb_poll();
+
+		/* After resume, and if the capslock LED is on, the PMU will
+		 * send a "capslock down" key event. This confuses the
+		 * restore_capslock_events logic. Remember if the capslock
+		 * LED was on before suspend so the unwanted key event can
+		 * be ignored after resume. */
+		if (restore_capslock_events)
+			adbhid_kbd_capslock_remember();
+
+		break;
+
+	case ADB_MSG_POST_RESET:
+		adbhid_probe();
+		break;
+	}
+	return NOTIFY_DONE;
+}
+
+static int
+adbhid_input_register(int id, int default_id, int original_handler_id,
+		      int current_handler_id, int mouse_kind)
+{
+	struct adbhid *hid;
+	struct input_dev *input_dev;
+	int err;
+	int i;
+
+	if (adbhid[id]) {
+		pr_err("Trying to reregister ADB HID on ID %d\n", id);
+		return -EEXIST;
+	}
+
+	adbhid[id] = hid = kzalloc(sizeof(struct adbhid), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!hid || !input_dev) {
+		err = -ENOMEM;
+		goto fail;
+	}
+
+	sprintf(hid->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);
+
+	hid->input = input_dev;
+	hid->id = default_id;
+	hid->original_handler_id = original_handler_id;
+	hid->current_handler_id = current_handler_id;
+	hid->mouse_kind = mouse_kind;
+	hid->flags = 0;
+	input_set_drvdata(input_dev, hid);
+	input_dev->name = hid->name;
+	input_dev->phys = hid->phys;
+	input_dev->id.bustype = BUS_ADB;
+	input_dev->id.vendor = 0x0001;
+	input_dev->id.product = (id << 12) | (default_id << 8) | original_handler_id;
+	input_dev->id.version = 0x0100;
+
+	switch (default_id) {
+	case ADB_KEYBOARD:
+		hid->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL);
+		if (!hid->keycode) {
+			err = -ENOMEM;
+			goto fail;
+		}
+
+		sprintf(hid->name, "ADB keyboard");
+
+		memcpy(hid->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
+
+		pr_info("Detected ADB keyboard, type ");
+		switch (original_handler_id) {
+		default:
+			pr_cont("<unknown>.\n");
+			input_dev->id.version = ADB_KEYBOARD_UNKNOWN;
+			break;
+
+		case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
+		case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
+		case 0xC0: case 0xC3: case 0xC6:
+			pr_cont("ANSI.\n");
+			input_dev->id.version = ADB_KEYBOARD_ANSI;
+			break;
+
+		case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
+		case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
+		case 0xC4: case 0xC7:
+			pr_cont("ISO, swapping keys.\n");
+			input_dev->id.version = ADB_KEYBOARD_ISO;
+			i = hid->keycode[10];
+			hid->keycode[10] = hid->keycode[50];
+			hid->keycode[50] = i;
+			break;
+
+		case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
+		case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
+			pr_cont("JIS.\n");
+			input_dev->id.version = ADB_KEYBOARD_JIS;
+			break;
+		}
+
+		for (i = 0; i < 128; i++)
+			if (hid->keycode[i])
+				set_bit(hid->keycode[i], input_dev->keybit);
+
+		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
+			BIT_MASK(EV_REP);
+		input_dev->ledbit[0] = BIT_MASK(LED_SCROLLL) |
+			BIT_MASK(LED_CAPSL) | BIT_MASK(LED_NUML);
+		input_dev->event = adbhid_kbd_event;
+		input_dev->keycodemax = KEY_FN;
+		input_dev->keycodesize = sizeof(hid->keycode[0]);
+		break;
+
+	case ADB_MOUSE:
+		sprintf(hid->name, "ADB mouse");
+
+		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+		input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
+			BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
+		input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+		break;
+
+	case ADB_MISC:
+		switch (original_handler_id) {
+		case 0x02: /* Adjustable keyboard button device */
+			sprintf(hid->name, "ADB adjustable keyboard buttons");
+			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
+				BIT_MASK(EV_REP);
+			set_bit(KEY_SOUND, input_dev->keybit);
+			set_bit(KEY_MUTE, input_dev->keybit);
+			set_bit(KEY_VOLUMEUP, input_dev->keybit);
+			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
+			break;
+		case 0x1f: /* Powerbook button device */
+			sprintf(hid->name, "ADB Powerbook buttons");
+			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
+				BIT_MASK(EV_REP);
+			set_bit(KEY_MUTE, input_dev->keybit);
+			set_bit(KEY_VOLUMEUP, input_dev->keybit);
+			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
+			set_bit(KEY_BRIGHTNESSUP, input_dev->keybit);
+			set_bit(KEY_BRIGHTNESSDOWN, input_dev->keybit);
+			set_bit(KEY_EJECTCD, input_dev->keybit);
+			set_bit(KEY_SWITCHVIDEOMODE, input_dev->keybit);
+			set_bit(KEY_KBDILLUMTOGGLE, input_dev->keybit);
+			set_bit(KEY_KBDILLUMDOWN, input_dev->keybit);
+			set_bit(KEY_KBDILLUMUP, input_dev->keybit);
+			break;
+		}
+		if (hid->name[0])
+			break;
+		/* else fall through */
+
+	default:
+		pr_info("Trying to register unknown ADB device to input layer.\n");
+		err = -ENODEV;
+		goto fail;
+	}
+
+	input_dev->keycode = hid->keycode;
+
+	err = input_register_device(input_dev);
+	if (err)
+		goto fail;
+
+	if (default_id == ADB_KEYBOARD) {
+		/* HACK WARNING!! This should go away as soon there is an utility
+		 * to control that for event devices.
+		 */
+		input_dev->rep[REP_DELAY] = 500;   /* input layer default: 250 */
+		input_dev->rep[REP_PERIOD] = 66; /* input layer default: 33 */
+	}
+
+	return 0;
+
+ fail:	input_free_device(input_dev);
+	if (hid) {
+		kfree(hid->keycode);
+		kfree(hid);
+	}
+	adbhid[id] = NULL;
+	return err;
+}
+
+static void adbhid_input_unregister(int id)
+{
+	input_unregister_device(adbhid[id]->input);
+	kfree(adbhid[id]->keycode);
+	kfree(adbhid[id]);
+	adbhid[id] = NULL;
+}
+
+
+static u16
+adbhid_input_reregister(int id, int default_id, int org_handler_id,
+			int cur_handler_id, int mk)
+{
+	if (adbhid[id]) {
+		if (adbhid[id]->input->id.product !=
+		    ((id << 12)|(default_id << 8)|org_handler_id)) {
+			adbhid_input_unregister(id);
+			adbhid_input_register(id, default_id, org_handler_id,
+					      cur_handler_id, mk);
+		}
+	} else
+		adbhid_input_register(id, default_id, org_handler_id,
+				      cur_handler_id, mk);
+	return 1<<id;
+}
+
+static void
+adbhid_input_devcleanup(u16 exist)
+{
+	int i;
+	for(i=1; i<16; i++)
+		if (adbhid[i] && !(exist&(1<<i)))
+			adbhid_input_unregister(i);
+}
+
+static void
+adbhid_probe(void)
+{
+	struct adb_request req;
+	int i, default_id, org_handler_id, cur_handler_id;
+	u16 reg = 0;
+
+	adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
+	adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
+	adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);
+
+	for (i = 0; i < keyboard_ids.nids; i++) {
+		int id = keyboard_ids.id[i];
+
+		adb_get_infos(id, &default_id, &org_handler_id);
+
+		/* turn off all leds */
+		adb_request(&req, NULL, ADBREQ_SYNC, 3,
+			    ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);
+
+		/* Enable full feature set of the keyboard
+		   ->get it to send separate codes for left and right shift,
+		   control, option keys */
+#if 0		/* handler 5 doesn't send separate codes for R modifiers */
+		if (adb_try_handler_change(id, 5))
+			printk("ADB keyboard at %d, handler set to 5\n", id);
+		else
+#endif
+		if (adb_try_handler_change(id, 3))
+			printk("ADB keyboard at %d, handler set to 3\n", id);
+		else
+			printk("ADB keyboard at %d, handler 1\n", id);
+
+		adb_get_infos(id, &default_id, &cur_handler_id);
+		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
+					       cur_handler_id, 0);
+	}
+
+	for (i = 0; i < buttons_ids.nids; i++) {
+		int id = buttons_ids.id[i];
+
+		adb_get_infos(id, &default_id, &org_handler_id);
+		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
+					       org_handler_id, 0);
+	}
+
+	/* Try to switch all mice to handler 4, or 2 for three-button
+	   mode and full resolution. */
+	for (i = 0; i < mouse_ids.nids; i++) {
+		int id = mouse_ids.id[i];
+		int mouse_kind;
+
+		adb_get_infos(id, &default_id, &org_handler_id);
+
+		if (adb_try_handler_change(id, 4)) {
+			printk("ADB mouse at %d, handler set to 4", id);
+			mouse_kind = ADBMOUSE_EXTENDED;
+		}
+		else if (adb_try_handler_change(id, 0x2F)) {
+			printk("ADB mouse at %d, handler set to 0x2F", id);
+			mouse_kind = ADBMOUSE_MICROSPEED;
+		}
+		else if (adb_try_handler_change(id, 0x42)) {
+			printk("ADB mouse at %d, handler set to 0x42", id);
+			mouse_kind = ADBMOUSE_TRACKBALLPRO;
+		}
+		else if (adb_try_handler_change(id, 0x66)) {
+			printk("ADB mouse at %d, handler set to 0x66", id);
+			mouse_kind = ADBMOUSE_MICROSPEED;
+		}
+		else if (adb_try_handler_change(id, 0x5F)) {
+			printk("ADB mouse at %d, handler set to 0x5F", id);
+			mouse_kind = ADBMOUSE_MICROSPEED;
+		}
+		else if (adb_try_handler_change(id, 3)) {
+			printk("ADB mouse at %d, handler set to 3", id);
+			mouse_kind = ADBMOUSE_MS_A3;
+		}
+		else if (adb_try_handler_change(id, 2)) {
+			printk("ADB mouse at %d, handler set to 2", id);
+			mouse_kind = ADBMOUSE_STANDARD_200;
+		}
+		else {
+			printk("ADB mouse at %d, handler 1", id);
+			mouse_kind = ADBMOUSE_STANDARD_100;
+		}
+
+		if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
+		    || (mouse_kind == ADBMOUSE_MICROSPEED)) {
+			init_microspeed(id);
+		} else if (mouse_kind == ADBMOUSE_MS_A3) {
+			init_ms_a3(id);
+		} else if (mouse_kind ==  ADBMOUSE_EXTENDED) {
+			/*
+			 * Register 1 is usually used for device
+			 * identification.  Here, we try to identify
+			 * a known device and call the appropriate
+			 * init function.
+			 */
+			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+				    ADB_READREG(id, 1));
+
+			if ((req.reply_len) &&
+			    (req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
+			    	|| (req.reply[2] == 0x20))) {
+				mouse_kind = ADBMOUSE_TRACKBALL;
+				init_trackball(id);
+			}
+			else if ((req.reply_len >= 4) &&
+			    (req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
+			    (req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
+				mouse_kind = ADBMOUSE_TRACKPAD;
+				init_trackpad(id);
+			}
+			else if ((req.reply_len >= 4) &&
+			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
+			    (req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
+				mouse_kind = ADBMOUSE_TURBOMOUSE5;
+				init_turbomouse(id);
+			}
+			else if ((req.reply_len == 9) &&
+			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
+			    (req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
+				if (adb_try_handler_change(id, 0x42)) {
+					pr_cont("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
+					mouse_kind = ADBMOUSE_MACALLY2;
+				}
+			}
+		}
+		pr_cont("\n");
+
+		adb_get_infos(id, &default_id, &cur_handler_id);
+		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
+					       cur_handler_id, mouse_kind);
+	}
+	adbhid_input_devcleanup(reg);
+}
+
+static void 
+init_trackpad(int id)
+{
+	struct adb_request req;
+	unsigned char r1_buffer[8];
+
+	pr_cont(" (trackpad)");
+
+	adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+		    ADB_READREG(id,1));
+	if (req.reply_len < 8)
+	    pr_cont("bad length for reg. 1\n");
+	else
+	{
+	    memcpy(r1_buffer, &req.reply[1], 8);
+
+	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
+	        ADB_WRITEREG(id,1),
+	            r1_buffer[0],
+	            r1_buffer[1],
+	            r1_buffer[2],
+	            r1_buffer[3],
+	            r1_buffer[4],
+	            r1_buffer[5],
+	            0x0d,
+	            r1_buffer[7]);
+
+            adb_request(&req, NULL, ADBREQ_SYNC, 9,
+	        ADB_WRITEREG(id,2),
+	    	    0x99,
+	    	    0x94,
+	    	    0x19,
+	    	    0xff,
+	    	    0xb2,
+	    	    0x8a,
+	    	    0x1b,
+	    	    0x50);
+
+	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
+	        ADB_WRITEREG(id,1),
+	            r1_buffer[0],
+	            r1_buffer[1],
+	            r1_buffer[2],
+	            r1_buffer[3],
+	            r1_buffer[4],
+	            r1_buffer[5],
+	            0x03, /*r1_buffer[6],*/
+	            r1_buffer[7]);
+
+	    /* Without this flush, the trackpad may be locked up */
+	    adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+        }
+}
+
+static void 
+init_trackball(int id)
+{
+	struct adb_request req;
+
+	pr_cont(" (trackman/mouseman)");
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 00,0x81);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 01,0x81);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 02,0x81);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 03,0x38);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 00,0x81);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 01,0x81);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 02,0x81);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id,1), 03,0x38);
+}
+
+static void
+init_turbomouse(int id)
+{
+	struct adb_request req;
+
+	pr_cont(" (TurboMouse 5)");
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 9,
+	ADB_WRITEREG(3,2),
+	    0xe7,
+	    0x8c,
+	    0,
+	    0,
+	    0,
+	    0xff,
+	    0xff,
+	    0x94);
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 9,
+	ADB_WRITEREG(3,2),
+	    0xa5,
+	    0x14,
+	    0,
+	    0,
+	    0x69,
+	    0xff,
+	    0xff,
+	    0x27);
+}
+
+static void
+init_microspeed(int id)
+{
+	struct adb_request req;
+
+	pr_cont(" (Microspeed/MacPoint or compatible)");
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+
+	/* This will initialize mice using the Microspeed, MacPoint and
+	   other compatible firmware. Bit 12 enables extended protocol.
+	   
+	   Register 1 Listen (4 Bytes)
+            0 -  3     Button is mouse (set also for double clicking!!!)
+            4 -  7     Button is locking (affects change speed also)
+            8 - 11     Button changes speed
+           12          1 = Extended mouse mode, 0 = normal mouse mode
+           13 - 15     unused 0
+           16 - 23     normal speed
+           24 - 31     changed speed
+
+       Register 1 talk holds version and product identification information.
+       Register 1 Talk (4 Bytes):
+            0 -  7     Product code
+            8 - 23     undefined, reserved
+           24 - 31     Version number
+        
+       Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
+ */
+	adb_request(&req, NULL, ADBREQ_SYNC, 5,
+	ADB_WRITEREG(id,1),
+	    0x20,	/* alt speed = 0x20 (rather slow) */
+	    0x00,	/* norm speed = 0x00 (fastest) */
+	    0x10,	/* extended protocol, no speed change */
+	    0x07);	/* all buttons enabled as mouse buttons, no locking */
+
+
+	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+}
+
+static void
+init_ms_a3(int id)
+{
+	struct adb_request req;
+
+	pr_cont(" (Mouse Systems A3 Mouse, or compatible)");
+	adb_request(&req, NULL, ADBREQ_SYNC, 3,
+	ADB_WRITEREG(id, 0x2),
+	    0x00,
+	    0x07);
+ 
+ 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+}
+
+static int __init adbhid_init(void)
+{
+#ifndef CONFIG_MAC
+	if (!machine_is(chrp) && !machine_is(powermac))
+		return 0;
+#endif
+
+	led_request.complete = 1;
+
+	adbhid_probe();
+
+	blocking_notifier_chain_register(&adb_client_list,
+			&adbhid_adb_notifier);
+
+	return 0;
+}
+
+static void __exit adbhid_exit(void)
+{
+}
+ 
+module_init(adbhid_init);
+module_exit(adbhid_exit);