patch-2.2.18 linux/drivers/macintosh/adbhid.c

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diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/macintosh/adbhid.c linux/drivers/macintosh/adbhid.c
@@ -0,0 +1,875 @@
+/*
+ * drivers/input/adbhid.c
+ *
+ * ADB HID driver for Power Macintosh computers.
+ *
+ * Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl
+ * (see that file for its authors and contributors).
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/malloc.h>
+#include <linux/init.h>
+#include <linux/notifier.h>
+#include <linux/input.h>
+#include <linux/kbd_ll.h>
+
+#include <asm/adb.h>
+#include <asm/cuda.h>
+#include <asm/pmu.h>
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
+
+MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
+
+#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,
+};
+
+unsigned char adb_to_linux_keycodes[128] = {
+	 30, 31, 32, 33, 35, 34, 44, 45, 46, 47, 86, 48, 16, 17, 18, 19,
+	 21, 20,  2,  3,  4,  5,  7,  6, 13, 10,  8, 12,  9, 11, 27, 24,
+	 22, 26, 23, 25, 28, 38, 36, 40, 37, 39, 43, 51, 53, 49, 50, 52,
+	 15, 57, 41, 14, 96,  1, 29,125, 42, 58, 56,105,106,108,103,  0,
+	  0, 83,  0, 55,  0, 78,  0, 69,  0,  0,  0, 98, 96,  0, 74,  0,
+	  0,117, 82, 79, 80, 81, 75, 76, 77, 71,  0, 72, 73,183,181,124,
+	 63, 64, 65, 61, 66, 67,191, 87,190, 99,  0, 70,  0, 68,101, 88,
+	  0,119,110,102,104,111, 62,107, 60,109, 59, 54,100, 97,116,116
+};
+
+struct adbhid {
+	struct input_dev input;
+	int id;
+	int default_id;
+	int original_handler_id;
+	int current_handler_id;
+	int mouse_kind;
+	unsigned char *keycode;
+	char name[64];
+};
+
+static struct adbhid *adbhid[16] = { 0 };
+
+static void adbhid_probe(void);
+
+static void adbhid_input_keycode(int, int, int);
+static void leds_done(struct adb_request *);
+
+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, struct pt_regs *regs, int apoll)
+{
+	int id = (data[0] >> 4) & 0x0f;
+
+	if (!adbhid[id]) {
+		printk(KERN_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 */
+	kbd_pt_regs = regs;
+	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 keycode, int repeat)
+{
+	int up_flag;
+
+	up_flag = (keycode & 0x80);
+	keycode &= 0x7f;
+
+	switch (keycode) {
+	case 0x39: /* Generate down/up events for CapsLock everytime. */
+		input_report_key(&adbhid[id]->input, KEY_CAPSLOCK, 1);
+		input_report_key(&adbhid[id]->input, KEY_CAPSLOCK, 0);
+		return;
+	case 0x3f: /* ignore Powerbook Fn key */
+		return;
+	}
+
+	if (adbhid[id]->keycode[keycode])
+		input_report_key(&adbhid[id]->input,
+				 adbhid[id]->keycode[keycode], !up_flag);
+	else
+		printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
+		       up_flag ? "released" : "pressed");
+}
+
+static void
+adbhid_mouse_input(unsigned char *data, int nb, struct pt_regs *regs, int autopoll)
+{
+	int id = (data[0] >> 4) & 0x0f;
+
+	if (!adbhid[id]) {
+		printk(KERN_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)
+		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 ));
+}
+
+static void
+adbhid_buttons_input(unsigned char *data, int nb, struct pt_regs *regs, int autopoll)
+{
+	int id = (data[0] >> 4) & 0x0f;
+
+	if (!adbhid[id]) {
+		printk(KERN_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 */
+		printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
+		       data[0], data[1], data[2], data[3]);
+		break;
+	case 0x1f: /* Powerbook button device */
+	  {
+#ifdef CONFIG_PMAC_BACKLIGHT
+		int backlight = get_backlight_level();
+
+		/*
+		 * XXX: Where is the contrast control for the passive?
+		 *  -- Cort
+		 */
+
+		switch (data[1]) {
+		case 0x8:	/* mute */
+			break;
+
+		case 0x7:	/* contrast decrease */
+			break;
+
+		case 0x6:	/* contrast increase */
+			break;
+
+		case 0xa:	/* brightness decrease */
+			if (backlight < 0)
+				break;
+			if (backlight > BACKLIGHT_OFF)
+				set_backlight_level(backlight-1);
+			else
+				set_backlight_level(BACKLIGHT_OFF);
+			break;
+
+		case 0x9:	/* brightness increase */
+			if (backlight < 0)
+				break;
+			if (backlight < BACKLIGHT_MAX)
+				set_backlight_level(backlight+1);
+			else 
+				set_backlight_level(BACKLIGHT_MAX);
+			break;
+		}
+#endif /* CONFIG_PMAC_BACKLIGHT */
+	  }
+	  break;
+	}
+}
+
+static struct adb_request led_request;
+static int leds_pending[16];
+static int pending_devs[16];
+static int pending_led_start=0;
+static int pending_led_end=0;
+
+static void real_leds(unsigned char leds, int device)
+{
+    if (led_request.complete) {
+	adb_request(&led_request, leds_done, 0, 3,
+		    ADB_WRITEREG(device, KEYB_LEDREG), 0xff,
+		    ~leds);
+    } 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;
+    }
+}
+
+/*
+ * 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 = dev->private;
+	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 leds_done(struct adb_request *req)
+{
+    int leds,device;
+
+    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;
+	real_leds(leds,device);
+    }
+
+}
+
+static int
+adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
+{
+	unsigned long flags;
+
+	switch (code) {
+	case ADB_MSG_PRE_RESET:
+	case ADB_MSG_POWERDOWN:
+	    	/* Stop the repeat timer. Autopoll is already off at this point */
+		save_flags(flags);
+		cli();
+		{
+			int i;
+			for (i = 1; i < 16; i++) {
+				if (adbhid[i])
+					del_timer(&adbhid[i]->input.timer);
+			}
+		}
+		restore_flags(flags);
+
+		/* Stop pending led requests */
+		while(!led_request.complete)
+			adb_poll();
+		break;
+
+	case ADB_MSG_POST_RESET:
+		adbhid_probe();
+		break;
+	}
+	return NOTIFY_DONE;
+}
+
+static void
+adbhid_input_register(int id, int default_id, int original_handler_id,
+		      int current_handler_id, int mouse_kind)
+{
+	int i;
+
+	if (adbhid[id]) {
+		printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
+		return;
+	}
+
+	if (!(adbhid[id] = kmalloc(sizeof(struct adbhid), GFP_KERNEL)))
+		return;
+
+	memset(adbhid[id], 0, sizeof(struct adbhid));
+
+	adbhid[id]->id = default_id;
+	adbhid[id]->original_handler_id = original_handler_id;
+	adbhid[id]->current_handler_id = current_handler_id;
+	adbhid[id]->mouse_kind = mouse_kind;
+	adbhid[id]->input.private = adbhid[id];
+	adbhid[id]->input.name = adbhid[id]->name;
+	adbhid[id]->input.idbus = BUS_ADB;
+	adbhid[id]->input.idvendor = 0x0001;
+	adbhid[id]->input.idproduct = (id << 12) | (default_id << 8) | original_handler_id;
+	adbhid[id]->input.idversion = 0x0100;
+
+	switch (default_id) {
+	case ADB_KEYBOARD:
+		if (!(adbhid[id]->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL))) {
+			kfree(adbhid[id]);
+			return;
+		}
+
+		sprintf(adbhid[id]->name, "ADB keyboard on ID %d:%d.%02x",
+			id, default_id, original_handler_id);
+
+		memcpy(adbhid[id]->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
+
+		printk(KERN_INFO "Detected ADB keyboard, type ");
+		switch (original_handler_id) {
+		default:
+			printk("<unknown>.\n");
+			adbhid[id]->input.idversion = 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:
+			printk("ANSI.\n");
+			adbhid[id]->input.idversion = 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:
+			printk("ISO, swapping keys.\n");
+			adbhid[id]->input.idversion = ADB_KEYBOARD_ISO;
+			i = adbhid[id]->keycode[10];
+			adbhid[id]->keycode[10] = adbhid[id]->keycode[50];
+			adbhid[id]->keycode[50] = i;
+			break;
+
+		case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
+		case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
+			printk("JIS.\n");
+			adbhid[id]->input.idversion = ADB_KEYBOARD_JIS;
+			break;
+		}
+
+		for (i = 0; i < 128; i++)
+			if (adbhid[id]->keycode[i])
+				set_bit(adbhid[id]->keycode[i], adbhid[id]->input.keybit);
+
+		adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
+		adbhid[id]->input.ledbit[0] = BIT(LED_SCROLLL) | BIT(LED_CAPSL) | BIT(LED_NUML);
+		adbhid[id]->input.event = adbhid_kbd_event;
+		adbhid[id]->input.keycodemax = 127;
+		adbhid[id]->input.keycodesize = 1;
+		break;
+
+	case ADB_MOUSE:
+		sprintf(adbhid[id]->name, "ADB mouse on ID %d:%d.%02x",
+			id, default_id, original_handler_id);
+
+		adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+		adbhid[id]->input.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+		adbhid[id]->input.relbit[0] = BIT(REL_X) | BIT(REL_Y);
+		break;
+
+	case ADB_MISC:
+		switch (original_handler_id) {
+		case 0x02: /* Adjustable keyboard button device */
+			sprintf(adbhid[id]->name, "ADB adjustable keyboard buttons on ID %d:%d.%02x",
+				id, default_id, original_handler_id);
+			break;
+		case 0x1f: /* Powerbook button device */
+			sprintf(adbhid[id]->name, "ADB Powerbook buttons on ID %d:%d.%02x",
+				id, default_id, original_handler_id);
+			break;
+		}
+		if (adbhid[id]->name[0])
+			break;
+		/* else fall through */
+
+	default:
+		printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
+		kfree(adbhid[id]);
+		return;
+	}
+
+	adbhid[id]->input.keycode = adbhid[id]->keycode;
+
+	input_register_device(&adbhid[id]->input);
+
+	printk(KERN_INFO "input%d: ADB HID on ID %d:%d.%02x\n",
+	       adbhid[id]->input.number, id, default_id, original_handler_id);
+
+	if (default_id == ADB_KEYBOARD) {
+		/* HACK WARNING!! This should go away as soon there is an utility
+		 * to control that for event devices.
+		 */
+		adbhid[id]->input.rep[REP_DELAY] = HZ/2;   /* input layer default: HZ/4 */
+		adbhid[id]->input.rep[REP_PERIOD] = HZ/15; /* input layer default: HZ/33 */
+	}
+}
+
+static void adbhid_input_unregister(int id)
+{
+	input_unregister_device(&adbhid[id]->input);
+	if (adbhid[id]->keycode)
+		kfree(adbhid[id]->keycode);
+	kfree(adbhid[id]);
+	adbhid[id] = 0;
+}
+
+
+static void
+adbhid_probe(void)
+{
+	struct adb_request req;
+	int i, default_id, org_handler_id, cur_handler_id;
+
+	for (i = 1; i < 16; i++) {
+		if (adbhid[i])
+			adbhid_input_unregister(i);
+	}
+
+	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);
+		adbhid_input_register(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);
+		adbhid_input_register(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)) {
+					printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
+					mouse_kind = ADBMOUSE_MACALLY2;
+				}
+			}
+		}
+		printk("\n");
+
+		adb_get_infos(id, &default_id, &cur_handler_id);
+		adbhid_input_register(id, default_id, org_handler_id,
+				      cur_handler_id, mouse_kind);
+        }
+}
+
+static void 
+init_trackpad(int id)
+{
+	struct adb_request req;
+	unsigned char r1_buffer[8];
+
+	printk(" (trackpad)");
+
+	adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+	ADB_READREG(id,1));
+	if (req.reply_len < 8)
+	    printk("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[6],*/
+	            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]);
+        }
+}
+
+static void 
+init_trackball(int id)
+{
+	struct adb_request req;
+
+	printk(" (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;
+
+        printk(" (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;
+
+        printk(" (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;
+
+	printk(" (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)
+{
+	if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
+	    return 0;
+
+	led_request.complete = 1;
+
+	adbhid_probe();
+
+	notifier_chain_register(&adb_client_list, &adbhid_adb_notifier);
+
+	return 0;
+}
+
+static void adbhid_exit(void)
+{
+}
+ 
+module_init(adbhid_init);
+module_exit(adbhid_exit);

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)