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!

24 files changed, 18915 insertions, 0 deletions

diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
new file mode 100644
index 00000000000..8a7117a08cf
--- /dev/null
+++ b/drivers/macintosh/Kconfig
@@ -0,0 +1,198 @@
+
+menu "Macintosh device drivers"
+	depends on PPC || MAC
+
+config ADB
+	bool "Apple Desktop Bus (ADB) support"
+	depends on MAC || PPC_PMAC
+	help
+	  Apple Desktop Bus (ADB) support is for support of devices which
+	  are connected to an ADB port.  ADB devices tend to have 4 pins.
+	  If you have an Apple Macintosh prior to the iMac, an iBook or
+	  PowerBook, or a "Blue and White G3", you probably want to say Y
+	  here.  Otherwise say N.
+
+config ADB_MACII
+	bool "Include Mac II ADB driver"
+	depends on ADB && MAC
+	help
+	  Say Y here if want your kernel to support Macintosh systems that use
+	  the Mac II style ADB.  This includes the II, IIx, IIcx, SE/30, IIci,
+	  Quadra 610, Quadra 650, Quadra 700, Quadra 800, Centris 610 and
+	  Centris 650.
+
+config ADB_MACIISI
+	bool "Include Mac IIsi ADB driver"
+	depends on ADB && MAC
+	help
+	  Say Y here if want your kernel to support Macintosh systems that use
+	  the Mac IIsi style ADB.  This includes the IIsi, IIvi, IIvx, Classic
+	  II, LC, LC II, LC III, Performa 460, and the Performa 600.
+
+config ADB_IOP
+	bool "Include IOP (IIfx/Quadra 9x0) ADB driver"
+	depends on ADB && MAC
+	help
+	  The I/O Processor (IOP) is an Apple custom IC designed to provide
+	  intelligent support for I/O controllers.  It is described at
+	  <http://www.angelfire.com/ca2/dev68k/iopdesc.html> to enable direct
+	  support for it, say 'Y' here.
+
+config ADB_PMU68K
+	bool "Include PMU (Powerbook) ADB driver"
+	depends on ADB && MAC
+	help
+	  Say Y here if want your kernel to support the m68k based Powerbooks.
+	  This includes the PowerBook 140, PowerBook 145, PowerBook 150,
+	  PowerBook 160, PowerBook 165, PowerBook 165c, PowerBook 170,
+	  PowerBook 180, PowerBook, 180c, PowerBook 190cs, PowerBook 520,
+	  PowerBook Duo 210, PowerBook Duo 230, PowerBook Duo 250,
+	  PowerBook Duo 270c, PowerBook Duo 280 and PowerBook Duo 280c.
+
+# we want to change this to something like CONFIG_SYSCTRL_CUDA/PMU
+config ADB_CUDA
+	bool "Support for CUDA based Macs and PowerMacs"
+	depends on (ADB || PPC_PMAC) && !PPC_PMAC64
+	help
+	  This provides support for CUDA based Macintosh and Power Macintosh
+	  systems.  This includes many m68k based Macs (Color Classic, Mac TV,
+	  Performa 475, Performa 520, Performa 550, Performa 575,
+	  Performa 588, Quadra 605, Quadra 630, Quadra/Centris 660AV, and
+	  Quadra 840AV), most OldWorld PowerMacs, the first generation iMacs,
+	  the Blue&White G3 and the "Yikes" G4 (PCI Graphics).  All later
+	  models should use CONFIG_ADB_PMU instead.  It is safe to say Y here
+	  even if your machine doesn't have a CUDA.
+
+	  If unsure say Y.
+
+config ADB_PMU
+	bool "Support for PMU  based PowerMacs"
+	depends on PPC_PMAC
+	help
+	  On PowerBooks, iBooks, and recent iMacs and Power Macintoshes, the
+	  PMU is an embedded microprocessor whose primary function is to
+	  control system power, and battery charging on the portable models.
+	  The PMU also controls the ADB (Apple Desktop Bus) which connects to
+	  the keyboard and mouse on some machines, as well as the non-volatile
+	  RAM and the RTC (real time clock) chip.  Say Y to enable support for
+	  this device; you should do so if your machine is one of those
+	  mentioned above.
+
+config PMAC_SMU
+	bool "Support for SMU  based PowerMacs"
+	depends on PPC_PMAC64
+	help
+	  This option adds support for the newer G5 iMacs and PowerMacs based
+	  on the "SMU" system control chip which replaces the old PMU.
+	  If you don't know, say Y.
+
+config PMAC_PBOOK
+	bool "Power management support for PowerBooks"
+	depends on ADB_PMU
+	---help---
+	  This provides support for putting a PowerBook to sleep; it also
+	  enables media bay support.  Power management works on the
+	  PB2400/3400/3500, Wallstreet, Lombard, and Bronze PowerBook G3 and
+	  the Titanium Powerbook G4, as well as the iBooks.  You should get
+	  the power management daemon, pmud, to make it work and you must have
+	  the /dev/pmu device (see the pmud README).
+
+	  Get pmud from <ftp://ftp.samba.org/pub/ppclinux/pmud/>.
+
+	  If you have a PowerBook, you should say Y here.
+
+	  You may also want to compile the dma sound driver as a module and
+	  have it autoloaded. The act of removing the module shuts down the
+	  sound hardware for more power savings.
+
+config PM
+	bool
+	depends on PPC_PMAC && ADB_PMU && PMAC_PBOOK
+	default y
+
+config PMAC_APM_EMU
+	tristate "APM emulation"
+	depends on PMAC_PBOOK
+
+# made a separate option since backlight may end up beeing used
+# on non-powerbook machines (but only on PMU based ones AFAIK)
+config PMAC_BACKLIGHT
+	bool "Backlight control for LCD screens"
+	depends on ADB_PMU
+	help
+	  Say Y here to build in code to manage the LCD backlight on a
+	  Macintosh PowerBook.  With this code, the backlight will be turned
+	  on and off appropriately on power-management and lid-open/lid-closed
+	  events; also, the PowerBook button device will be enabled so you can
+	  change the screen brightness.
+
+config MAC_SERIAL
+	tristate "Support for PowerMac serial ports (OBSOLETE DRIVER)"
+	depends on PPC_PMAC && BROKEN
+	help
+	  This driver is obsolete. Use CONFIG_SERIAL_PMACZILOG in
+	  "Character devices --> Serial drivers --> PowerMac z85c30" option.
+
+config ADB_MACIO
+	bool "Include MacIO (CHRP) ADB driver"
+	depends on ADB && PPC_CHRP && !PPC_PMAC64
+	help
+	  Say Y here to include direct support for the ADB controller in the
+	  Hydra chip used on PowerPC Macintoshes of the CHRP type.  (The Hydra
+	  also includes a MESH II SCSI controller, DBDMA controller, VIA chip,
+	  OpenPIC controller and two RS422/Geoports.)
+
+config INPUT_ADBHID
+	bool "Support for ADB input devices (keyboard, mice, ...)"
+	depends on ADB && INPUT=y
+	help
+	  Say Y here if you want to have ADB (Apple Desktop Bus) HID devices
+	  such as keyboards, mice, joysticks, trackpads  or graphic tablets
+	  handled by the input layer.  If you say Y here, make sure to say Y to
+	  the corresponding drivers "Keyboard support" (CONFIG_INPUT_KEYBDEV),
+	  "Mouse Support" (CONFIG_INPUT_MOUSEDEV) and "Event interface
+	  support" (CONFIG_INPUT_EVDEV) as well.
+
+	  If unsure, say Y.
+
+config MAC_EMUMOUSEBTN
+	bool "Support for mouse button 2+3 emulation"
+	depends on INPUT_ADBHID
+	help
+	  This provides generic support for emulating the 2nd and 3rd mouse
+	  button with keypresses.  If you say Y here, the emulation is still
+	  disabled by default.  The emulation is controlled by these sysctl
+	  entries:
+	  /proc/sys/dev/mac_hid/mouse_button_emulation
+	  /proc/sys/dev/mac_hid/mouse_button2_keycode
+	  /proc/sys/dev/mac_hid/mouse_button3_keycode
+
+	  If you have an Apple machine with a 1-button mouse, say Y here.
+
+config THERM_WINDTUNNEL
+	tristate "Support for thermal management on Windtunnel G4s"
+	depends on I2C && I2C_KEYWEST && PPC_PMAC && !PPC_PMAC64
+	help
+	  This driver provides some thermostat and fan control for the desktop
+	  G4 "Windtunnel"
+
+config THERM_ADT746X
+	tristate "Support for thermal mgmnt on laptops with ADT 746x chipset"
+	depends on I2C && I2C_KEYWEST && PPC_PMAC && !PPC_PMAC64
+	help
+	  This driver provides some thermostat and fan control for the
+          iBook G4, and the ATI based aluminium PowerBooks, allowing slighlty
+	  better fan behaviour by default, and some manual control.
+
+config THERM_PM72
+	tristate "Support for thermal management on PowerMac G5"
+	depends on I2C && I2C_KEYWEST && PPC_PMAC64
+	help
+	  This driver provides thermostat and fan control for the desktop
+	  G5 machines. 
+
+config ANSLCD
+	tristate "Support for ANS LCD display"
+	depends on ADB_CUDA && PPC_PMAC
+
+endmenu
diff --git a/drivers/macintosh/Makefile b/drivers/macintosh/Makefile
new file mode 100644
index 00000000000..c3a4705a829
--- /dev/null
+++ b/drivers/macintosh/Makefile
@@ -0,0 +1,29 @@
+#
+# Makefile for the Macintosh-specific device drivers.
+#
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_PPC_PMAC)		+= macio_asic.o
+
+obj-$(CONFIG_PMAC_PBOOK)	+= mediabay.o
+obj-$(CONFIG_MAC_SERIAL)	+= macserial.o
+obj-$(CONFIG_MAC_EMUMOUSEBTN)	+= mac_hid.o
+obj-$(CONFIG_INPUT_ADBHID)	+= adbhid.o
+obj-$(CONFIG_ANSLCD)		+= ans-lcd.o
+
+obj-$(CONFIG_ADB_PMU)		+= via-pmu.o
+obj-$(CONFIG_ADB_CUDA)		+= via-cuda.o
+obj-$(CONFIG_PMAC_APM_EMU)	+= apm_emu.o
+obj-$(CONFIG_PMAC_SMU)		+= smu.o
+
+obj-$(CONFIG_ADB)		+= adb.o
+obj-$(CONFIG_ADB_MACII)		+= via-macii.o
+obj-$(CONFIG_ADB_MACIISI)	+= via-maciisi.o
+obj-$(CONFIG_ADB_IOP)		+= adb-iop.o
+obj-$(CONFIG_ADB_PMU68K)	+= via-pmu68k.o
+obj-$(CONFIG_ADB_MACIO)		+= macio-adb.o
+
+obj-$(CONFIG_THERM_PM72)	+= therm_pm72.o
+obj-$(CONFIG_THERM_WINDTUNNEL)	+= therm_windtunnel.o
+obj-$(CONFIG_THERM_ADT746X)	+= therm_adt746x.o
diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c
new file mode 100644
index 00000000000..71aeb912ec6
--- /dev/null
+++ b/drivers/macintosh/adb-iop.c
@@ -0,0 +1,287 @@
+/*
+ * I/O Processor (IOP) ADB Driver
+ * Written and (C) 1999 by Joshua M. Thompson (funaho@jurai.org)
+ * Based on via-cuda.c by Paul Mackerras.
+ *
+ * 1999-07-01 (jmt) - First implementation for new driver architecture.
+ *
+ * 1999-07-31 (jmt) - First working version.
+ *
+ * TODO:
+ *
+ * o Implement SRQ handling.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+
+#include <asm/bootinfo.h> 
+#include <asm/macintosh.h> 
+#include <asm/macints.h> 
+#include <asm/mac_iop.h>
+#include <asm/mac_oss.h>
+#include <asm/adb_iop.h>
+
+#include <linux/adb.h> 
+
+/*#define DEBUG_ADB_IOP*/
+
+extern void iop_ism_irq(int, void *, struct pt_regs *);
+
+static struct adb_request *current_req;
+static struct adb_request *last_req;
+#if 0
+static unsigned char reply_buff[16];
+static unsigned char *reply_ptr;
+#endif
+
+static enum adb_iop_state {
+    idle,
+    sending,
+    awaiting_reply
+} adb_iop_state;
+
+static void adb_iop_start(void);
+static int adb_iop_probe(void);
+static int adb_iop_init(void);
+static int adb_iop_send_request(struct adb_request *, int);
+static int adb_iop_write(struct adb_request *);
+static int adb_iop_autopoll(int);
+static void adb_iop_poll(void);
+static int adb_iop_reset_bus(void);
+
+struct adb_driver adb_iop_driver = {
+	"ISM IOP",
+	adb_iop_probe,
+	adb_iop_init,
+	adb_iop_send_request,
+	adb_iop_autopoll,
+	adb_iop_poll,
+	adb_iop_reset_bus
+};
+
+static void adb_iop_end_req(struct adb_request *req, int state)
+{
+	req->complete = 1;
+	current_req = req->next;
+	if (req->done) (*req->done)(req);
+	adb_iop_state = state;
+}
+
+/*
+ * Completion routine for ADB commands sent to the IOP.
+ *
+ * This will be called when a packet has been successfully sent.
+ */
+
+static void adb_iop_complete(struct iop_msg *msg, struct pt_regs *regs)
+{
+	struct adb_request *req;
+	uint flags;
+
+	local_irq_save(flags);
+
+	req = current_req;
+	if ((adb_iop_state == sending) && req && req->reply_expected) {
+		adb_iop_state = awaiting_reply;
+	}
+
+	local_irq_restore(flags);
+}
+
+/*
+ * Listen for ADB messages from the IOP.
+ *
+ * This will be called when unsolicited messages (usually replies to TALK
+ * commands or autopoll packets) are received.
+ */
+
+static void adb_iop_listen(struct iop_msg *msg, struct pt_regs *regs)
+{
+	struct adb_iopmsg *amsg = (struct adb_iopmsg *) msg->message;
+	struct adb_request *req;
+	uint flags;
+#ifdef DEBUG_ADB_IOP
+	int i;
+#endif
+
+	local_irq_save(flags);
+
+	req = current_req;
+
+#ifdef DEBUG_ADB_IOP
+	printk("adb_iop_listen %p: rcvd packet, %d bytes: %02X %02X", req,
+		(uint) amsg->count + 2, (uint) amsg->flags, (uint) amsg->cmd);
+	for (i = 0; i < amsg->count; i++)
+		printk(" %02X", (uint) amsg->data[i]);
+	printk("\n");
+#endif
+
+	/* Handle a timeout. Timeout packets seem to occur even after */
+	/* we've gotten a valid reply to a TALK, so I'm assuming that */
+	/* a "timeout" is actually more like an "end-of-data" signal. */
+	/* We need to send back a timeout packet to the IOP to shut   */
+	/* it up, plus complete the current request, if any.          */
+
+	if (amsg->flags & ADB_IOP_TIMEOUT) {
+		msg->reply[0] = ADB_IOP_TIMEOUT | ADB_IOP_AUTOPOLL;
+		msg->reply[1] = 0;
+		msg->reply[2] = 0;
+		if (req && (adb_iop_state != idle)) {
+			adb_iop_end_req(req, idle);
+		}
+	} else {
+		/* TODO: is it possible for more than one chunk of data  */
+		/*       to arrive before the timeout? If so we need to */
+		/*       use reply_ptr here like the other drivers do.  */
+		if ((adb_iop_state == awaiting_reply) &&
+		    (amsg->flags & ADB_IOP_EXPLICIT)) {
+			req->reply_len = amsg->count + 1;
+			memcpy(req->reply, &amsg->cmd, req->reply_len);
+		} else {
+			adb_input(&amsg->cmd, amsg->count + 1, regs,
+				  amsg->flags & ADB_IOP_AUTOPOLL);
+		}
+		memcpy(msg->reply, msg->message, IOP_MSG_LEN);
+	}
+	iop_complete_message(msg);
+	local_irq_restore(flags);
+}
+
+/*
+ * Start sending an ADB packet, IOP style
+ *
+ * There isn't much to do other than hand the packet over to the IOP
+ * after encapsulating it in an adb_iopmsg.
+ */
+
+static void adb_iop_start(void)
+{
+	unsigned long flags;
+	struct adb_request *req;
+	struct adb_iopmsg amsg;
+#ifdef DEBUG_ADB_IOP
+	int i;
+#endif
+
+	/* get the packet to send */
+	req = current_req;
+	if (!req) return;
+
+	local_irq_save(flags);
+
+#ifdef DEBUG_ADB_IOP
+	printk("adb_iop_start %p: sending packet, %d bytes:", req, req->nbytes);
+	for (i = 0 ; i < req->nbytes ; i++)
+		printk(" %02X", (uint) req->data[i]);
+	printk("\n");
+#endif
+
+	/* The IOP takes MacII-style packets, so */
+	/* strip the initial ADB_PACKET byte.    */
+
+	amsg.flags = ADB_IOP_EXPLICIT;
+	amsg.count = req->nbytes - 2;
+
+	/* amsg.data immediately follows amsg.cmd, effectively making */
+	/* amsg.cmd a pointer to the beginning of a full ADB packet.  */
+	memcpy(&amsg.cmd, req->data + 1, req->nbytes - 1);
+
+	req->sent = 1;
+	adb_iop_state = sending;
+	local_irq_restore(flags);
+
+	/* Now send it. The IOP manager will call adb_iop_complete */
+	/* when the packet has been sent.                          */
+
+	iop_send_message(ADB_IOP, ADB_CHAN, req,
+			 sizeof(amsg), (__u8 *) &amsg, adb_iop_complete);
+}
+
+int adb_iop_probe(void)
+{
+	if (!iop_ism_present) return -ENODEV;
+	return 0;
+}
+
+int adb_iop_init(void)
+{
+	printk("adb: IOP ISM driver v0.4 for Unified ADB.\n");
+	iop_listen(ADB_IOP, ADB_CHAN, adb_iop_listen, "ADB");
+	return 0;
+}
+
+int adb_iop_send_request(struct adb_request *req, int sync)
+{
+	int err;
+
+	err = adb_iop_write(req);
+	if (err) return err;
+
+	if (sync) {
+		while (!req->complete) adb_iop_poll();
+	}
+	return 0;
+}
+
+static int adb_iop_write(struct adb_request *req)
+{
+	unsigned long flags;
+
+	if ((req->nbytes < 2) || (req->data[0] != ADB_PACKET)) {
+		req->complete = 1;
+		return -EINVAL;
+	}
+
+	local_irq_save(flags);
+
+	req->next = 0;
+	req->sent = 0;
+	req->complete = 0;
+	req->reply_len = 0;
+
+	if (current_req != 0) {
+		last_req->next = req;
+		last_req = req;
+	} else {
+		current_req = req;
+		last_req = req;
+	}
+
+	local_irq_restore(flags);
+	if (adb_iop_state == idle) adb_iop_start();
+	return 0;
+}
+
+int adb_iop_autopoll(int devs)
+{
+	/* TODO: how do we enable/disable autopoll? */
+	return 0;
+}
+
+void adb_iop_poll(void)
+{
+	if (adb_iop_state == idle) adb_iop_start();
+	iop_ism_irq(0, (void *) ADB_IOP, NULL);
+}
+
+int adb_iop_reset_bus(void)
+{
+	struct adb_request req = {
+		.reply_expected = 0,
+		.nbytes = 2,
+		.data = { ADB_PACKET, 0 },
+	};
+
+	adb_iop_write(&req);
+	while (!req.complete) {
+		adb_iop_poll();
+		schedule();
+	}
+
+	return 0;
+}
diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
new file mode 100644
index 00000000000..7297c77f99c
--- /dev/null
+++ b/drivers/macintosh/adb.c
@@ -0,0 +1,910 @@
+/*
+ * Device driver for the Apple Desktop Bus
+ * and the /dev/adb device on macintoshes.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * Modified to declare controllers as structures, added
+ * client notification of bus reset and handles PowerBook
+ * sleep, by Benjamin Herrenschmidt.
+ *
+ * To do:
+ *
+ * - /sys/bus/adb to list the devices and infos
+ * - more /dev/adb to allow userland to receive the
+ *   flow of auto-polling datas from a given device.
+ * - move bus probe to a kernel thread
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+#include <linux/notifier.h>
+#include <linux/wait.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/devfs_fs_kernel.h>
+
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#ifdef CONFIG_PPC
+#include <asm/prom.h>
+#endif
+
+
+EXPORT_SYMBOL(adb_controller);
+EXPORT_SYMBOL(adb_client_list);
+
+extern struct adb_driver via_macii_driver;
+extern struct adb_driver via_maciisi_driver;
+extern struct adb_driver via_cuda_driver;
+extern struct adb_driver adb_iop_driver;
+extern struct adb_driver via_pmu_driver;
+extern struct adb_driver macio_adb_driver;
+
+static struct adb_driver *adb_driver_list[] = {
+#ifdef CONFIG_ADB_MACII
+	&via_macii_driver,
+#endif
+#ifdef CONFIG_ADB_MACIISI
+	&via_maciisi_driver,
+#endif
+#ifdef CONFIG_ADB_CUDA
+	&via_cuda_driver,
+#endif
+#ifdef CONFIG_ADB_IOP
+	&adb_iop_driver,
+#endif
+#if defined(CONFIG_ADB_PMU) || defined(CONFIG_ADB_PMU68K)
+	&via_pmu_driver,
+#endif
+#ifdef CONFIG_ADB_MACIO
+	&macio_adb_driver,
+#endif
+	NULL
+};
+
+static struct class_simple *adb_dev_class;
+
+struct adb_driver *adb_controller;
+struct notifier_block *adb_client_list = NULL;
+static int adb_got_sleep;
+static int adb_inited;
+static pid_t adb_probe_task_pid;
+static DECLARE_MUTEX(adb_probe_mutex);
+static struct completion adb_probe_task_comp;
+static int sleepy_trackpad;
+static int autopoll_devs;
+int __adb_probe_sync;
+
+#ifdef CONFIG_PMAC_PBOOK
+static int adb_notify_sleep(struct pmu_sleep_notifier *self, int when);
+static struct pmu_sleep_notifier adb_sleep_notifier = {
+	adb_notify_sleep,
+	SLEEP_LEVEL_ADB,
+};
+#endif
+
+static int adb_scan_bus(void);
+static int do_adb_reset_bus(void);
+static void adbdev_init(void);
+static int try_handler_change(int, int);
+
+static struct adb_handler {
+	void (*handler)(unsigned char *, int, struct pt_regs *, int);
+	int original_address;
+	int handler_id;
+	int busy;
+} adb_handler[16];
+
+/*
+ * The adb_handler_sem mutex protects all accesses to the original_address
+ * and handler_id fields of adb_handler[i] for all i, and changes to the
+ * handler field.
+ * Accesses to the handler field are protected by the adb_handler_lock
+ * rwlock.  It is held across all calls to any handler, so that by the
+ * time adb_unregister returns, we know that the old handler isn't being
+ * called.
+ */
+static DECLARE_MUTEX(adb_handler_sem);
+static DEFINE_RWLOCK(adb_handler_lock);
+
+#if 0
+static void printADBreply(struct adb_request *req)
+{
+        int i;
+
+        printk("adb reply (%d)", req->reply_len);
+        for(i = 0; i < req->reply_len; i++)
+                printk(" %x", req->reply[i]);
+        printk("\n");
+
+}
+#endif
+
+
+static __inline__ void adb_wait_ms(unsigned int ms)
+{
+	if (current->pid && adb_probe_task_pid &&
+	  adb_probe_task_pid == current->pid)
+		msleep(ms);
+	else
+		mdelay(ms);
+}
+
+static int adb_scan_bus(void)
+{
+	int i, highFree=0, noMovement;
+	int devmask = 0;
+	struct adb_request req;
+	
+	/* assumes adb_handler[] is all zeroes at this point */
+	for (i = 1; i < 16; i++) {
+		/* see if there is anything at address i */
+		adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+                            (i << 4) | 0xf);
+		if (req.reply_len > 1)
+			/* one or more devices at this address */
+			adb_handler[i].original_address = i;
+		else if (i > highFree)
+			highFree = i;
+	}
+
+	/* Note we reset noMovement to 0 each time we move a device */
+	for (noMovement = 1; noMovement < 2 && highFree > 0; noMovement++) {
+		for (i = 1; i < 16; i++) {
+			if (adb_handler[i].original_address == 0)
+				continue;
+			/*
+			 * Send a "talk register 3" command to address i
+			 * to provoke a collision if there is more than
+			 * one device at this address.
+			 */
+			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+				    (i << 4) | 0xf);
+			/*
+			 * Move the device(s) which didn't detect a
+			 * collision to address `highFree'.  Hopefully
+			 * this only moves one device.
+			 */
+			adb_request(&req, NULL, ADBREQ_SYNC, 3,
+				    (i<< 4) | 0xb, (highFree | 0x60), 0xfe);
+			/*
+			 * See if anybody actually moved. This is suggested
+			 * by HW TechNote 01:
+			 *
+			 * http://developer.apple.com/technotes/hw/hw_01.html
+			 */
+			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+				    (highFree << 4) | 0xf);
+			if (req.reply_len <= 1) continue;
+			/*
+			 * Test whether there are any device(s) left
+			 * at address i.
+			 */
+			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+				    (i << 4) | 0xf);
+			if (req.reply_len > 1) {
+				/*
+				 * There are still one or more devices
+				 * left at address i.  Register the one(s)
+				 * we moved to `highFree', and find a new
+				 * value for highFree.
+				 */
+				adb_handler[highFree].original_address =
+					adb_handler[i].original_address;
+				while (highFree > 0 &&
+				       adb_handler[highFree].original_address)
+					highFree--;
+				if (highFree <= 0)
+					break;
+
+				noMovement = 0;
+			}
+			else {
+				/*
+				 * No devices left at address i; move the
+				 * one(s) we moved to `highFree' back to i.
+				 */
+				adb_request(&req, NULL, ADBREQ_SYNC, 3,
+					    (highFree << 4) | 0xb,
+					    (i | 0x60), 0xfe);
+			}
+		}	
+	}
+
+	/* Now fill in the handler_id field of the adb_handler entries. */
+	printk(KERN_DEBUG "adb devices:");
+	for (i = 1; i < 16; i++) {
+		if (adb_handler[i].original_address == 0)
+			continue;
+		adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+			    (i << 4) | 0xf);
+		adb_handler[i].handler_id = req.reply[2];
+		printk(" [%d]: %d %x", i, adb_handler[i].original_address,
+		       adb_handler[i].handler_id);
+		devmask |= 1 << i;
+	}
+	printk("\n");
+	return devmask;
+}
+
+/*
+ * This kernel task handles ADB probing. It dies once probing is
+ * completed.
+ */
+static int
+adb_probe_task(void *x)
+{
+	sigset_t blocked;
+
+	strcpy(current->comm, "kadbprobe");
+
+	sigfillset(&blocked);
+	sigprocmask(SIG_BLOCK, &blocked, NULL);
+	flush_signals(current);
+
+	printk(KERN_INFO "adb: starting probe task...\n");
+	do_adb_reset_bus();
+	printk(KERN_INFO "adb: finished probe task...\n");
+	
+	adb_probe_task_pid = 0;
+	up(&adb_probe_mutex);
+	
+	return 0;
+}
+
+static void
+__adb_probe_task(void *data)
+{
+	adb_probe_task_pid = kernel_thread(adb_probe_task, NULL, SIGCHLD | CLONE_KERNEL);
+}
+
+static DECLARE_WORK(adb_reset_work, __adb_probe_task, NULL);
+
+int
+adb_reset_bus(void)
+{
+	if (__adb_probe_sync) {
+		do_adb_reset_bus();
+		return 0;
+	}
+
+	down(&adb_probe_mutex);
+	schedule_work(&adb_reset_work);
+	return 0;
+}
+
+int __init adb_init(void)
+{
+	struct adb_driver *driver;
+	int i;
+
+#ifdef CONFIG_PPC32
+	if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
+		return 0;
+#endif
+#ifdef CONFIG_MAC
+	if (!MACH_IS_MAC)
+		return 0;
+#endif
+
+	/* xmon may do early-init */
+	if (adb_inited)
+		return 0;
+	adb_inited = 1;
+		
+	adb_controller = NULL;
+
+	i = 0;
+	while ((driver = adb_driver_list[i++]) != NULL) {
+		if (!driver->probe()) {
+			adb_controller = driver;
+			break;
+		}
+	}
+	if ((adb_controller == NULL) || adb_controller->init()) {
+		printk(KERN_WARNING "Warning: no ADB interface detected\n");
+		adb_controller = NULL;
+	} else {
+#ifdef CONFIG_PMAC_PBOOK
+		pmu_register_sleep_notifier(&adb_sleep_notifier);
+#endif /* CONFIG_PMAC_PBOOK */
+#ifdef CONFIG_PPC
+		if (machine_is_compatible("AAPL,PowerBook1998") ||
+			machine_is_compatible("PowerBook1,1"))
+			sleepy_trackpad = 1;
+#endif /* CONFIG_PPC */
+		init_completion(&adb_probe_task_comp);
+		adbdev_init();
+		adb_reset_bus();
+	}
+	return 0;
+}
+
+__initcall(adb_init);
+
+#ifdef CONFIG_PMAC_PBOOK
+/*
+ * notify clients before sleep and reset bus afterwards
+ */
+int
+adb_notify_sleep(struct pmu_sleep_notifier *self, int when)
+{
+	int ret;
+	
+	switch (when) {
+	case PBOOK_SLEEP_REQUEST:
+		adb_got_sleep = 1;
+		/* We need to get a lock on the probe thread */
+		down(&adb_probe_mutex);
+		/* Stop autopoll */
+		if (adb_controller->autopoll)
+			adb_controller->autopoll(0);
+		ret = notifier_call_chain(&adb_client_list, ADB_MSG_POWERDOWN, NULL);
+		if (ret & NOTIFY_STOP_MASK) {
+			up(&adb_probe_mutex);
+			return PBOOK_SLEEP_REFUSE;
+		}
+		break;
+	case PBOOK_SLEEP_REJECT:
+		if (adb_got_sleep) {
+			adb_got_sleep = 0;
+			up(&adb_probe_mutex);
+			adb_reset_bus();
+		}
+		break;
+		
+	case PBOOK_SLEEP_NOW:
+		break;
+	case PBOOK_WAKE:
+		adb_got_sleep = 0;
+		up(&adb_probe_mutex);
+		adb_reset_bus();
+		break;
+	}
+	return PBOOK_SLEEP_OK;
+}
+#endif /* CONFIG_PMAC_PBOOK */
+
+static int
+do_adb_reset_bus(void)
+{
+	int ret, nret;
+	
+	if (adb_controller == NULL)
+		return -ENXIO;
+		
+	if (adb_controller->autopoll)
+		adb_controller->autopoll(0);
+
+	nret = notifier_call_chain(&adb_client_list, ADB_MSG_PRE_RESET, NULL);
+	if (nret & NOTIFY_STOP_MASK) {
+		if (adb_controller->autopoll)
+			adb_controller->autopoll(autopoll_devs);
+		return -EBUSY;
+	}
+
+	if (sleepy_trackpad) {
+		/* Let the trackpad settle down */
+		adb_wait_ms(500);
+	}
+
+	down(&adb_handler_sem);
+	write_lock_irq(&adb_handler_lock);
+	memset(adb_handler, 0, sizeof(adb_handler));
+	write_unlock_irq(&adb_handler_lock);
+
+	/* That one is still a bit synchronous, oh well... */
+	if (adb_controller->reset_bus)
+		ret = adb_controller->reset_bus();
+	else
+		ret = 0;
+
+	if (sleepy_trackpad) {
+		/* Let the trackpad settle down */
+		adb_wait_ms(1500);
+	}
+
+	if (!ret) {
+		autopoll_devs = adb_scan_bus();
+		if (adb_controller->autopoll)
+			adb_controller->autopoll(autopoll_devs);
+	}
+	up(&adb_handler_sem);
+
+	nret = notifier_call_chain(&adb_client_list, ADB_MSG_POST_RESET, NULL);
+	if (nret & NOTIFY_STOP_MASK)
+		return -EBUSY;
+	
+	return ret;
+}
+