Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 2946 insertions, 0 deletions

diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
new file mode 100644
index 00000000..a4a3c7cd
--- /dev/null
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -0,0 +1,2946 @@
+/*
+* USB FTDI client driver for Elan Digital Systems's Uxxx adapters
+*
+* Copyright(C) 2006 Elan Digital Systems Limited
+* http://www.elandigitalsystems.com
+*
+* Author and Maintainer - Tony Olech - Elan Digital Systems
+* tony.olech@elandigitalsystems.com
+*
+* This program is free software;you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation, version 2.
+*
+*
+* This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
+* based on various USB client drivers in the 2.6.15 linux kernel
+* with constant reference to the 3rd Edition of Linux Device Drivers
+* published by O'Reilly
+*
+* The U132 adapter is a USB to CardBus adapter specifically designed
+* for PC cards that contain an OHCI host controller. Typical PC cards
+* are the Orange Mobile 3G Option GlobeTrotter Fusion card.
+*
+* The U132 adapter will *NOT *work with PC cards that do not contain
+* an OHCI controller. A simple way to test whether a PC card has an
+* OHCI controller as an interface is to insert the PC card directly
+* into a laptop(or desktop) with a CardBus slot and if "lspci" shows
+* a new USB controller and "lsusb -v" shows a new OHCI Host Controller
+* then there is a good chance that the U132 adapter will support the
+* PC card.(you also need the specific client driver for the PC card)
+*
+* Please inform the Author and Maintainer about any PC cards that
+* contain OHCI Host Controller and work when directly connected to
+* an embedded CardBus slot but do not work when they are connected
+* via an ELAN U132 adapter.
+*
+*/
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/ioctl.h>
+#include <linux/pci_ids.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kref.h>
+#include <linux/mutex.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+MODULE_AUTHOR("Tony Olech");
+MODULE_DESCRIPTION("FTDI ELAN driver");
+MODULE_LICENSE("GPL");
+#define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
+static bool distrust_firmware = 1;
+module_param(distrust_firmware, bool, 0);
+MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren"
+        "t setup");
+extern struct platform_driver u132_platform_driver;
+static struct workqueue_struct *status_queue;
+static struct workqueue_struct *command_queue;
+static struct workqueue_struct *respond_queue;
+/*
+* ftdi_module_lock exists to protect access to global variables
+*
+*/
+static struct mutex ftdi_module_lock;
+static int ftdi_instances = 0;
+static struct list_head ftdi_static_list;
+/*
+* end of the global variables protected by ftdi_module_lock
+*/
+#include "usb_u132.h"
+#include <asm/io.h>
+#include <linux/usb/hcd.h>
+
+	/* FIXME ohci.h is ONLY for internal use by the OHCI driver.
+	 * If you're going to try stuff like this, you need to split
+	 * out shareable stuff (register declarations?) into its own
+	 * file, maybe name <linux/usb/ohci.h>
+	 */
+
+#include "../host/ohci.h"
+/* Define these values to match your devices*/
+#define USB_FTDI_ELAN_VENDOR_ID 0x0403
+#define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea
+/* table of devices that work with this driver*/
+static const struct usb_device_id ftdi_elan_table[] = {
+        {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)},
+        { /* Terminating entry */ }
+};
+
+MODULE_DEVICE_TABLE(usb, ftdi_elan_table);
+/* only the jtag(firmware upgrade device) interface requires
+* a device file and corresponding minor number, but the
+* interface is created unconditionally - I suppose it could
+* be configured or not according to a module parameter.
+* But since we(now) require one interface per device,
+* and since it unlikely that a normal installation would
+* require more than a couple of elan-ftdi devices, 8 seems
+* like a reasonable limit to have here, and if someone
+* really requires more than 8 devices, then they can frig the
+* code and recompile
+*/
+#define USB_FTDI_ELAN_MINOR_BASE 192
+#define COMMAND_BITS 5
+#define COMMAND_SIZE (1<<COMMAND_BITS)
+#define COMMAND_MASK (COMMAND_SIZE-1)
+struct u132_command {
+        u8 header;
+        u16 length;
+        u8 address;
+        u8 width;
+        u32 value;
+        int follows;
+        void *buffer;
+};
+#define RESPOND_BITS 5
+#define RESPOND_SIZE (1<<RESPOND_BITS)
+#define RESPOND_MASK (RESPOND_SIZE-1)
+struct u132_respond {
+        u8 header;
+        u8 address;
+        u32 *value;
+        int *result;
+        struct completion wait_completion;
+};
+struct u132_target {
+        void *endp;
+        struct urb *urb;
+        int toggle_bits;
+        int error_count;
+        int condition_code;
+        int repeat_number;
+        int halted;
+        int skipped;
+        int actual;
+        int non_null;
+        int active;
+        int abandoning;
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+                int toggle_bits, int error_count, int condition_code,
+                int repeat_number, int halted, int skipped, int actual,
+                int non_null);
+};
+/* Structure to hold all of our device specific stuff*/
+struct usb_ftdi {
+        struct list_head ftdi_list;
+        struct mutex u132_lock;
+        int command_next;
+        int command_head;
+        struct u132_command command[COMMAND_SIZE];
+        int respond_next;
+        int respond_head;
+        struct u132_respond respond[RESPOND_SIZE];
+        struct u132_target target[4];
+        char device_name[16];
+        unsigned synchronized:1;
+        unsigned enumerated:1;
+        unsigned registered:1;
+        unsigned initialized:1;
+        unsigned card_ejected:1;
+        int function;
+        int sequence_num;
+        int disconnected;
+        int gone_away;
+        int stuck_status;
+        int status_queue_delay;
+        struct semaphore sw_lock;
+        struct usb_device *udev;
+        struct usb_interface *interface;
+        struct usb_class_driver *class;
+        struct delayed_work status_work;
+        struct delayed_work command_work;
+        struct delayed_work respond_work;
+        struct u132_platform_data platform_data;
+        struct resource resources[0];
+        struct platform_device platform_dev;
+        unsigned char *bulk_in_buffer;
+        size_t bulk_in_size;
+        size_t bulk_in_last;
+        size_t bulk_in_left;
+        __u8 bulk_in_endpointAddr;
+        __u8 bulk_out_endpointAddr;
+        struct kref kref;
+        u32 controlreg;
+        u8 response[4 + 1024];
+        int expected;
+        int received;
+        int ed_found;
+};
+#define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref)
+#define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \
+        platform_dev)
+static struct usb_driver ftdi_elan_driver;
+static void ftdi_elan_delete(struct kref *kref)
+{
+        struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref);
+        dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi);
+        usb_put_dev(ftdi->udev);
+        ftdi->disconnected += 1;
+        mutex_lock(&ftdi_module_lock);
+        list_del_init(&ftdi->ftdi_list);
+        ftdi_instances -= 1;
+        mutex_unlock(&ftdi_module_lock);
+        kfree(ftdi->bulk_in_buffer);
+        ftdi->bulk_in_buffer = NULL;
+}
+
+static void ftdi_elan_put_kref(struct usb_ftdi *ftdi)
+{
+        kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+static void ftdi_elan_get_kref(struct usb_ftdi *ftdi)
+{
+        kref_get(&ftdi->kref);
+}
+
+static void ftdi_elan_init_kref(struct usb_ftdi *ftdi)
+{
+        kref_init(&ftdi->kref);
+}
+
+static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
+{
+	if (!queue_delayed_work(status_queue, &ftdi->status_work, delta))
+		kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
+{
+	if (queue_delayed_work(status_queue, &ftdi->status_work, delta))
+		kref_get(&ftdi->kref);
+}
+
+static void ftdi_status_cancel_work(struct usb_ftdi *ftdi)
+{
+        if (cancel_delayed_work(&ftdi->status_work))
+                kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
+{
+	if (!queue_delayed_work(command_queue, &ftdi->command_work, delta))
+		kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
+{
+	if (queue_delayed_work(command_queue, &ftdi->command_work, delta))
+		kref_get(&ftdi->kref);
+}
+
+static void ftdi_command_cancel_work(struct usb_ftdi *ftdi)
+{
+        if (cancel_delayed_work(&ftdi->command_work))
+                kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+static void ftdi_response_requeue_work(struct usb_ftdi *ftdi,
+        unsigned int delta)
+{
+	if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
+		kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
+{
+	if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
+		kref_get(&ftdi->kref);
+}
+
+static void ftdi_response_cancel_work(struct usb_ftdi *ftdi)
+{
+        if (cancel_delayed_work(&ftdi->respond_work))
+                kref_put(&ftdi->kref, ftdi_elan_delete);
+}
+
+void ftdi_elan_gone_away(struct platform_device *pdev)
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        ftdi->gone_away += 1;
+        ftdi_elan_put_kref(ftdi);
+}
+
+
+EXPORT_SYMBOL_GPL(ftdi_elan_gone_away);
+static void ftdi_release_platform_dev(struct device *dev)
+{
+        dev->parent = NULL;
+}
+
+static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
+        struct u132_target *target, u8 *buffer, int length);
+static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi);
+static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi);
+static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi);
+static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi);
+static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi);
+static int ftdi_elan_synchronize(struct usb_ftdi *ftdi);
+static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi);
+static int ftdi_elan_command_engine(struct usb_ftdi *ftdi);
+static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi);
+static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi)
+{
+        int result;
+        if (ftdi->platform_dev.dev.parent)
+                return -EBUSY;
+        ftdi_elan_get_kref(ftdi);
+        ftdi->platform_data.potpg = 100;
+        ftdi->platform_data.reset = NULL;
+        ftdi->platform_dev.id = ftdi->sequence_num;
+        ftdi->platform_dev.resource = ftdi->resources;
+        ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources);
+        ftdi->platform_dev.dev.platform_data = &ftdi->platform_data;
+        ftdi->platform_dev.dev.parent = NULL;
+        ftdi->platform_dev.dev.release = ftdi_release_platform_dev;
+        ftdi->platform_dev.dev.dma_mask = NULL;
+        snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd");
+        ftdi->platform_dev.name = ftdi->device_name;
+        dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd");
+        request_module("u132_hcd");
+        dev_info(&ftdi->udev->dev, "registering '%s'\n",
+                ftdi->platform_dev.name);
+        result = platform_device_register(&ftdi->platform_dev);
+        return result;
+}
+
+static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi)
+{
+        mutex_lock(&ftdi->u132_lock);
+        while (ftdi->respond_next > ftdi->respond_head) {
+                struct u132_respond *respond = &ftdi->respond[RESPOND_MASK &
+                        ftdi->respond_head++];
+                *respond->result = -ESHUTDOWN;
+                *respond->value = 0;
+                complete(&respond->wait_completion);
+        } mutex_unlock(&ftdi->u132_lock);
+}
+
+static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi)
+{
+        int ed_number = 4;
+        mutex_lock(&ftdi->u132_lock);
+        while (ed_number-- > 0) {
+                struct u132_target *target = &ftdi->target[ed_number];
+                if (target->active == 1) {
+                        target->condition_code = TD_DEVNOTRESP;
+                        mutex_unlock(&ftdi->u132_lock);
+                        ftdi_elan_do_callback(ftdi, target, NULL, 0);
+                        mutex_lock(&ftdi->u132_lock);
+                }
+        }
+        ftdi->received = 0;
+        ftdi->expected = 4;
+        ftdi->ed_found = 0;
+        mutex_unlock(&ftdi->u132_lock);
+}
+
+static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi)
+{
+        int ed_number = 4;
+        mutex_lock(&ftdi->u132_lock);
+        while (ed_number-- > 0) {
+                struct u132_target *target = &ftdi->target[ed_number];
+                target->abandoning = 1;
+              wait_1:if (target->active == 1) {
+                        int command_size = ftdi->command_next -
+                                ftdi->command_head;
+                        if (command_size < COMMAND_SIZE) {
+                                struct u132_command *command = &ftdi->command[
+                                        COMMAND_MASK & ftdi->command_next];
+                                command->header = 0x80 | (ed_number << 5) | 0x4;
+                                command->length = 0x00;
+                                command->address = 0x00;
+                                command->width = 0x00;
+                                command->follows = 0;
+                                command->value = 0;
+                                command->buffer = &command->value;
+                                ftdi->command_next += 1;
+                                ftdi_elan_kick_command_queue(ftdi);
+                        } else {
+                                mutex_unlock(&ftdi->u132_lock);
+                                msleep(100);
+                                mutex_lock(&ftdi->u132_lock);
+                                goto wait_1;
+                        }
+                }
+              wait_2:if (target->active == 1) {
+                        int command_size = ftdi->command_next -
+                                ftdi->command_head;
+                        if (command_size < COMMAND_SIZE) {
+                                struct u132_command *command = &ftdi->command[
+                                        COMMAND_MASK & ftdi->command_next];
+                                command->header = 0x90 | (ed_number << 5);
+                                command->length = 0x00;
+                                command->address = 0x00;
+                                command->width = 0x00;
+                                command->follows = 0;
+                                command->value = 0;
+                                command->buffer = &command->value;
+                                ftdi->command_next += 1;
+                                ftdi_elan_kick_command_queue(ftdi);
+                        } else {
+                                mutex_unlock(&ftdi->u132_lock);
+                                msleep(100);
+                                mutex_lock(&ftdi->u132_lock);
+                                goto wait_2;
+                        }
+                }
+        }
+        ftdi->received = 0;
+        ftdi->expected = 4;
+        ftdi->ed_found = 0;
+        mutex_unlock(&ftdi->u132_lock);
+}
+
+static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi)
+{
+        int ed_number = 4;
+        mutex_lock(&ftdi->u132_lock);
+        while (ed_number-- > 0) {
+                struct u132_target *target = &ftdi->target[ed_number];
+                target->abandoning = 1;
+              wait:if (target->active == 1) {
+                        int command_size = ftdi->command_next -
+                                ftdi->command_head;
+                        if (command_size < COMMAND_SIZE) {
+                                struct u132_command *command = &ftdi->command[
+                                        COMMAND_MASK & ftdi->command_next];
+                                command->header = 0x80 | (ed_number << 5) | 0x4;
+                                command->length = 0x00;
+                                command->address = 0x00;
+                                command->width = 0x00;
+                                command->follows = 0;
+                                command->value = 0;
+                                command->buffer = &command->value;
+                                ftdi->command_next += 1;
+                                ftdi_elan_kick_command_queue(ftdi);
+                        } else {
+                                mutex_unlock(&ftdi->u132_lock);
+                                msleep(100);
+                                mutex_lock(&ftdi->u132_lock);
+                                goto wait;
+                        }
+                }
+        }
+        ftdi->received = 0;
+        ftdi->expected = 4;
+        ftdi->ed_found = 0;
+        mutex_unlock(&ftdi->u132_lock);
+}
+
+static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi)
+{
+        ftdi_command_queue_work(ftdi, 0);
+}
+
+static void ftdi_elan_command_work(struct work_struct *work)
+{
+        struct usb_ftdi *ftdi =
+		container_of(work, struct usb_ftdi, command_work.work);
+
+        if (ftdi->disconnected > 0) {
+                ftdi_elan_put_kref(ftdi);
+                return;
+        } else {
+                int retval = ftdi_elan_command_engine(ftdi);
+                if (retval == -ESHUTDOWN) {
+                        ftdi->disconnected += 1;
+                } else if (retval == -ENODEV) {
+                        ftdi->disconnected += 1;
+                } else if (retval)
+                        dev_err(&ftdi->udev->dev, "command error %d\n", retval);
+                ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10));
+                return;
+        }
+}
+
+static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi)
+{
+        ftdi_respond_queue_work(ftdi, 0);
+}
+
+static void ftdi_elan_respond_work(struct work_struct *work)
+{
+        struct usb_ftdi *ftdi =
+		container_of(work, struct usb_ftdi, respond_work.work);
+        if (ftdi->disconnected > 0) {
+                ftdi_elan_put_kref(ftdi);
+                return;
+        } else {
+                int retval = ftdi_elan_respond_engine(ftdi);
+                if (retval == 0) {
+                } else if (retval == -ESHUTDOWN) {
+                        ftdi->disconnected += 1;
+                } else if (retval == -ENODEV) {
+                        ftdi->disconnected += 1;
+                } else if (retval == -EILSEQ) {
+                        ftdi->disconnected += 1;
+                } else {
+                        ftdi->disconnected += 1;
+                        dev_err(&ftdi->udev->dev, "respond error %d\n", retval);
+                }
+                if (ftdi->disconnected > 0) {
+                        ftdi_elan_abandon_completions(ftdi);
+                        ftdi_elan_abandon_targets(ftdi);
+                }
+                ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10));
+                return;
+        }
+}
+
+
+/*
+* the sw_lock is initially held and will be freed
+* after the FTDI has been synchronized
+*
+*/
+static void ftdi_elan_status_work(struct work_struct *work)
+{
+        struct usb_ftdi *ftdi =
+		container_of(work, struct usb_ftdi, status_work.work);
+        int work_delay_in_msec = 0;
+        if (ftdi->disconnected > 0) {
+                ftdi_elan_put_kref(ftdi);
+                return;
+        } else if (ftdi->synchronized == 0) {
+                down(&ftdi->sw_lock);
+                if (ftdi_elan_synchronize(ftdi) == 0) {
+                        ftdi->synchronized = 1;
+                        ftdi_command_queue_work(ftdi, 1);
+                        ftdi_respond_queue_work(ftdi, 1);
+                        up(&ftdi->sw_lock);
+                        work_delay_in_msec = 100;
+                } else {
+                        dev_err(&ftdi->udev->dev, "synchronize failed\n");
+                        up(&ftdi->sw_lock);
+                        work_delay_in_msec = 10 *1000;
+                }
+        } else if (ftdi->stuck_status > 0) {
+                if (ftdi_elan_stuck_waiting(ftdi) == 0) {
+                        ftdi->stuck_status = 0;
+                        ftdi->synchronized = 0;
+                } else if ((ftdi->stuck_status++ % 60) == 1) {
+                        dev_err(&ftdi->udev->dev, "WRONG type of card inserted "
+                                "- please remove\n");
+                } else
+                        dev_err(&ftdi->udev->dev, "WRONG type of card inserted "
+                                "- checked %d times\n", ftdi->stuck_status);
+                work_delay_in_msec = 100;
+        } else if (ftdi->enumerated == 0) {
+                if (ftdi_elan_enumeratePCI(ftdi) == 0) {
+                        ftdi->enumerated = 1;
+                        work_delay_in_msec = 250;
+                } else
+                        work_delay_in_msec = 1000;
+        } else if (ftdi->initialized == 0) {
+                if (ftdi_elan_setupOHCI(ftdi) == 0) {
+                        ftdi->initialized = 1;
+                        work_delay_in_msec = 500;
+                } else {
+                        dev_err(&ftdi->udev->dev, "initialized failed - trying "
+                                "again in 10 seconds\n");
+                        work_delay_in_msec = 1 *1000;
+                }
+        } else if (ftdi->registered == 0) {
+                work_delay_in_msec = 10;
+                if (ftdi_elan_hcd_init(ftdi) == 0) {
+                        ftdi->registered = 1;
+                } else
+                        dev_err(&ftdi->udev->dev, "register failed\n");
+                work_delay_in_msec = 250;
+        } else {
+                if (ftdi_elan_checkingPCI(ftdi) == 0) {
+                        work_delay_in_msec = 250;
+                } else if (ftdi->controlreg & 0x00400000) {
+                        if (ftdi->gone_away > 0) {
+                                dev_err(&ftdi->udev->dev, "PCI device eject con"
+                                        "firmed platform_dev.dev.parent=%p plat"
+                                        "form_dev.dev=%p\n",
+                                        ftdi->platform_dev.dev.parent,
+                                        &ftdi->platform_dev.dev);
+                                platform_device_unregister(&ftdi->platform_dev);
+                                ftdi->platform_dev.dev.parent = NULL;
+                                ftdi->registered = 0;
+                                ftdi->enumerated = 0;
+                                ftdi->card_ejected = 0;
+                                ftdi->initialized = 0;
+                                ftdi->gone_away = 0;
+                        } else
+                                ftdi_elan_flush_targets(ftdi);
+                        work_delay_in_msec = 250;
+                } else {
+                        dev_err(&ftdi->udev->dev, "PCI device has disappeared\n"
+                                );
+                        ftdi_elan_cancel_targets(ftdi);
+                        work_delay_in_msec = 500;
+                        ftdi->enumerated = 0;
+                        ftdi->initialized = 0;
+                }
+        }
+        if (ftdi->disconnected > 0) {
+                ftdi_elan_put_kref(ftdi);
+                return;
+        } else {
+                ftdi_status_requeue_work(ftdi,
+                        msecs_to_jiffies(work_delay_in_msec));
+                return;
+        }
+}
+
+
+/*
+* file_operations for the jtag interface
+*
+* the usage count for the device is incremented on open()
+* and decremented on release()
+*/
+static int ftdi_elan_open(struct inode *inode, struct file *file)
+{
+	int subminor;
+	struct usb_interface *interface;
+
+        subminor = iminor(inode);
+        interface = usb_find_interface(&ftdi_elan_driver, subminor);
+
+        if (!interface) {
+                printk(KERN_ERR "can't find device for minor %d\n", subminor);
+                return -ENODEV;
+        } else {
+                struct usb_ftdi *ftdi = usb_get_intfdata(interface);
+                if (!ftdi) {
+                        return -ENODEV;
+                } else {
+                        if (down_interruptible(&ftdi->sw_lock)) {
+                                return -EINTR;
+                        } else {
+                                ftdi_elan_get_kref(ftdi);
+                                file->private_data = ftdi;
+                                return 0;
+                        }
+                }
+        }
+}
+
+static int ftdi_elan_release(struct inode *inode, struct file *file)
+{
+        struct usb_ftdi *ftdi = file->private_data;
+        if (ftdi == NULL)
+                return -ENODEV;
+        up(&ftdi->sw_lock);        /* decrement the count on our device */
+        ftdi_elan_put_kref(ftdi);
+        return 0;
+}
+
+
+/*
+*
+* blocking bulk reads are used to get data from the device
+*
+*/
+static ssize_t ftdi_elan_read(struct file *file, char __user *buffer,
+			      size_t count, loff_t *ppos)
+{
+        char data[30 *3 + 4];
+        char *d = data;
+        int m = (sizeof(data) - 1) / 3;
+        int bytes_read = 0;
+        int retry_on_empty = 10;
+        int retry_on_timeout = 5;
+        struct usb_ftdi *ftdi = file->private_data;
+        if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        }
+        data[0] = 0;
+      have:if (ftdi->bulk_in_left > 0) {
+                if (count-- > 0) {
+                        char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer;
+                        ftdi->bulk_in_left -= 1;
+                        if (bytes_read < m) {
+                                d += sprintf(d, " %02X", 0x000000FF & *p);
+                        } else if (bytes_read > m) {
+                        } else
+                                d += sprintf(d, " ..");
+                        if (copy_to_user(buffer++, p, 1)) {
+                                return -EFAULT;
+                        } else {
+                                bytes_read += 1;
+                                goto have;
+                        }
+                } else
+                        return bytes_read;
+        }
+      more:if (count > 0) {
+                int packet_bytes = 0;
+                int retval = usb_bulk_msg(ftdi->udev,
+                        usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
+                         ftdi->bulk_in_buffer, ftdi->bulk_in_size,
+                        &packet_bytes, 50);
+                if (packet_bytes > 2) {
+                        ftdi->bulk_in_left = packet_bytes - 2;
+                        ftdi->bulk_in_last = 1;
+                        goto have;
+                } else if (retval == -ETIMEDOUT) {
+                        if (retry_on_timeout-- > 0) {
+                                goto more;
+                        } else if (bytes_read > 0) {
+                                return bytes_read;
+                        } else
+                                return retval;
+                } else if (retval == 0) {
+                        if (retry_on_empty-- > 0) {
+                                goto more;
+                        } else
+                                return bytes_read;
+                } else
+                        return retval;
+        } else
+                return bytes_read;
+}
+
+static void ftdi_elan_write_bulk_callback(struct urb *urb)
+{
+	struct usb_ftdi *ftdi = urb->context;
+	int status = urb->status;
+
+	if (status && !(status == -ENOENT || status == -ECONNRESET ||
+	    status == -ESHUTDOWN)) {
+                dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %"
+                        "d\n", urb, status);
+        }
+        usb_free_coherent(urb->dev, urb->transfer_buffer_length,
+                urb->transfer_buffer, urb->transfer_dma);
+}
+
+static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi,
+        char *buf, int command_size, int total_size)
+{
+        int ed_commands = 0;
+        int b = 0;
+        int I = command_size;
+        int i = ftdi->command_head;
+        while (I-- > 0) {
+                struct u132_command *command = &ftdi->command[COMMAND_MASK &
+                        i++];
+                int F = command->follows;
+                u8 *f = command->buffer;
+                if (command->header & 0x80) {
+                        ed_commands |= 1 << (0x3 & (command->header >> 5));
+                }
+                buf[b++] = command->header;
+                buf[b++] = (command->length >> 0) & 0x00FF;
+                buf[b++] = (command->length >> 8) & 0x00FF;
+                buf[b++] = command->address;
+                buf[b++] = command->width;
+                while (F-- > 0) {
+                        buf[b++] = *f++;
+                }
+        }
+        return ed_commands;
+}
+
+static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size)
+{
+        int total_size = 0;
+        int I = command_size;
+        int i = ftdi->command_head;
+        while (I-- > 0) {
+                struct u132_command *command = &ftdi->command[COMMAND_MASK &
+                        i++];
+                total_size += 5 + command->follows;
+        } return total_size;
+}
+
+static int ftdi_elan_command_engine(struct usb_ftdi *ftdi)
+{
+        int retval;
+        char *buf;
+        int ed_commands;
+        int total_size;
+        struct urb *urb;
+        int command_size = ftdi->command_next - ftdi->command_head;
+        if (command_size == 0)
+                return 0;
+        total_size = ftdi_elan_total_command_size(ftdi, command_size);
+        urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!urb) {
+                dev_err(&ftdi->udev->dev, "could not get a urb to write %d comm"
+                        "ands totaling %d bytes to the Uxxx\n", command_size,
+                        total_size);
+                return -ENOMEM;
+        }
+        buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL,
+                &urb->transfer_dma);
+        if (!buf) {
+                dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c"
+                        "ommands totaling %d bytes to the Uxxx\n", command_size,
+                         total_size);
+                usb_free_urb(urb);
+                return -ENOMEM;
+        }
+        ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf,
+                command_size, total_size);
+        usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
+                ftdi->bulk_out_endpointAddr), buf, total_size,
+                ftdi_elan_write_bulk_callback, ftdi);
+        urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+        if (ed_commands) {
+                char diag[40 *3 + 4];
+                char *d = diag;
+                int m = total_size;
+                u8 *c = buf;
+                int s = (sizeof(diag) - 1) / 3;
+                diag[0] = 0;
+                while (s-- > 0 && m-- > 0) {
+                        if (s > 0 || m == 0) {
+                                d += sprintf(d, " %02X", *c++);
+                        } else
+                                d += sprintf(d, " ..");
+                }
+        }
+        retval = usb_submit_urb(urb, GFP_KERNEL);
+        if (retval) {
+                dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write "
+                        "%d commands totaling %d bytes to the Uxxx\n", retval,
+                        urb, command_size, total_size);
+                usb_free_coherent(ftdi->udev, total_size, buf, urb->transfer_dma);
+                usb_free_urb(urb);
+                return retval;
+        }
+        usb_free_urb(urb);        /* release our reference to this urb,
+                the USB core will eventually free it entirely */
+        ftdi->command_head += command_size;
+        ftdi_elan_kick_respond_queue(ftdi);
+        return 0;
+}
+
+static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
+        struct u132_target *target, u8 *buffer, int length)
+{
+        struct urb *urb = target->urb;
+        int halted = target->halted;
+        int skipped = target->skipped;
+        int actual = target->actual;
+        int non_null = target->non_null;
+        int toggle_bits = target->toggle_bits;
+        int error_count = target->error_count;
+        int condition_code = target->condition_code;
+        int repeat_number = target->repeat_number;
+        void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int,
+                int, int, int, int) = target->callback;
+        target->active -= 1;
+        target->callback = NULL;
+        (*callback) (target->endp, urb, buffer, length, toggle_bits,
+                error_count, condition_code, repeat_number, halted, skipped,
+                actual, non_null);
+}
+
+static char *have_ed_set_response(struct usb_ftdi *ftdi,
+        struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
+        char *b)
+{
+        int payload = (ed_length >> 0) & 0x07FF;
+        mutex_lock(&ftdi->u132_lock);
+        target->actual = 0;
+        target->non_null = (ed_length >> 15) & 0x0001;
+        target->repeat_number = (ed_length >> 11) & 0x000F;
+        if (ed_type == 0x02) {
+                if (payload == 0 || target->abandoning > 0) {
+                        target->abandoning = 0;
+                        mutex_unlock(&ftdi->u132_lock);
+                        ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
+                                payload);
+                        ftdi->received = 0;
+                        ftdi->expected = 4;
+                        ftdi->ed_found = 0;
+                        return ftdi->response;
+                } else {
+                        ftdi->expected = 4 + payload;
+                        ftdi->ed_found = 1;
+                        mutex_unlock(&ftdi->u132_lock);
+                        return b;
+                }
+        } else if (ed_type == 0x03) {
+                if (payload == 0 || target->abandoning > 0) {
+                        target->abandoning = 0;
+                        mutex_unlock(&ftdi->u132_lock);
+                        ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
+                                payload);
+                        ftdi->received = 0;
+                        ftdi->expected = 4;
+                        ftdi->ed_found = 0;
+                        return ftdi->response;
+                } else {
+                        ftdi->expected = 4 + payload;
+                        ftdi->ed_found = 1;
+                        mutex_unlock(&ftdi->u132_lock);
+                        return b;
+                }
+        } else if (ed_type == 0x01) {
+                target->abandoning = 0;
+                mutex_unlock(&ftdi->u132_lock);
+                ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
+                        payload);
+                ftdi->received = 0;
+                ftdi->expected = 4;
+                ftdi->ed_found = 0;
+                return ftdi->response;
+        } else {
+                target->abandoning = 0;
+                mutex_unlock(&ftdi->u132_lock);
+                ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
+                        payload);
+                ftdi->received = 0;
+                ftdi->expected = 4;
+                ftdi->ed_found = 0;
+                return ftdi->response;
+        }
+}
+
+static char *have_ed_get_response(struct usb_ftdi *ftdi,
+        struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
+        char *b)
+{
+        mutex_lock(&ftdi->u132_lock);
+        target->condition_code = TD_DEVNOTRESP;
+        target->actual = (ed_length >> 0) & 0x01FF;
+        target->non_null = (ed_length >> 15) & 0x0001;
+        target->repeat_number = (ed_length >> 11) & 0x000F;
+        mutex_unlock(&ftdi->u132_lock);
+        if (target->active)
+                ftdi_elan_do_callback(ftdi, target, NULL, 0);
+        target->abandoning = 0;
+        ftdi->received = 0;
+        ftdi->expected = 4;
+        ftdi->ed_found = 0;
+        return ftdi->response;
+}
+
+
+/*
+* The engine tries to empty the FTDI fifo
+*
+* all responses found in the fifo data are dispatched thus
+* the response buffer can only ever hold a maximum sized
+* response from the Uxxx.
+*
+*/
+static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi)
+{
+        u8 *b = ftdi->response + ftdi->received;
+        int bytes_read = 0;
+        int retry_on_empty = 1;
+        int retry_on_timeout = 3;
+        int empty_packets = 0;
+      read:{
+                int packet_bytes = 0;
+                int retval = usb_bulk_msg(ftdi->udev,
+                        usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
+                         ftdi->bulk_in_buffer, ftdi->bulk_in_size,
+                        &packet_bytes, 500);
+                char diag[30 *3 + 4];
+                char *d = diag;
+                int m = packet_bytes;
+                u8 *c = ftdi->bulk_in_buffer;
+                int s = (sizeof(diag) - 1) / 3;
+                diag[0] = 0;
+                while (s-- > 0 && m-- > 0) {
+                        if (s > 0 || m == 0) {
+                                d += sprintf(d, " %02X", *c++);
+                        } else
+                                d += sprintf(d, " ..");
+                }
+                if (packet_bytes > 2) {
+                        ftdi->bulk_in_left = packet_bytes - 2;
+                        ftdi->bulk_in_last = 1;
+                        goto have;
+                } else if (retval == -ETIMEDOUT) {
+                        if (retry_on_timeout-- > 0) {
+                                dev_err(&ftdi->udev->dev, "TIMED OUT with packe"
+                                        "t_bytes = %d with total %d bytes%s\n",
+                                        packet_bytes, bytes_read, diag);
+                                goto more;
+                        } else if (bytes_read > 0) {
+                                dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n",
+                                        bytes_read, diag);
+                                return -ENOMEM;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "TIMED OUT with packe"
+                                        "t_bytes = %d with total %d bytes%s\n",
+                                        packet_bytes, bytes_read, diag);
+                                return -ENOMEM;
+                        }
+                } else if (retval == -EILSEQ) {
+                        dev_err(&ftdi->udev->dev, "error = %d with packet_bytes"
+                                " = %d with total %d bytes%s\n", retval,
+                                packet_bytes, bytes_read, diag);
+                        return retval;
+                } else if (retval) {
+                        dev_err(&ftdi->udev->dev, "error = %d with packet_bytes"
+                                " = %d with total %d bytes%s\n", retval,
+                                packet_bytes, bytes_read, diag);
+                        return retval;
+                } else if (packet_bytes == 2) {
+                        unsigned char s0 = ftdi->bulk_in_buffer[0];
+                        unsigned char s1 = ftdi->bulk_in_buffer[1];
+                        empty_packets += 1;
+                        if (s0 == 0x31 && s1 == 0x60) {
+                                if (retry_on_empty-- > 0) {
+                                        goto more;
+                                } else
+                                        return 0;
+                        } else if (s0 == 0x31 && s1 == 0x00) {
+                                if (retry_on_empty-- > 0) {
+                                        goto more;
+                                } else
+                                        return 0;
+                        } else {
+                                if (retry_on_empty-- > 0) {
+                                        goto more;
+                                } else
+                                        return 0;
+                        }
+                } else if (packet_bytes == 1) {
+                        if (retry_on_empty-- > 0) {
+                                goto more;
+                        } else
+                                return 0;
+                } else {
+                        if (retry_on_empty-- > 0) {
+                                goto more;
+                        } else
+                                return 0;
+                }
+        }
+      more:{
+                goto read;
+        }
+      have:if (ftdi->bulk_in_left > 0) {
+                u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last];
+                bytes_read += 1;
+                ftdi->bulk_in_left -= 1;
+                if (ftdi->received == 0 && c == 0xFF) {
+                        goto have;
+                } else
+                        *b++ = c;
+                if (++ftdi->received < ftdi->expected) {
+                        goto have;
+                } else if (ftdi->ed_found) {
+                        int ed_number = (ftdi->response[0] >> 5) & 0x03;
+                        u16 ed_length = (ftdi->response[2] << 8) |
+                                ftdi->response[1];
+                        struct u132_target *target = &ftdi->target[ed_number];
+                        int payload = (ed_length >> 0) & 0x07FF;
+                        char diag[30 *3 + 4];
+                        char *d = diag;
+                        int m = payload;
+                        u8 *c = 4 + ftdi->response;
+                        int s = (sizeof(diag) - 1) / 3;
+                        diag[0] = 0;
+                        while (s-- > 0 && m-- > 0) {
+                                if (s > 0 || m == 0) {
+                                        d += sprintf(d, " %02X", *c++);
+                                } else
+                                        d += sprintf(d, " ..");
+                        }
+                        ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
+                                payload);
+                        ftdi->received = 0;
+                        ftdi->expected = 4;
+                        ftdi->ed_found = 0;
+                        b = ftdi->response;
+                        goto have;
+                } else if (ftdi->expected == 8) {
+                        u8 buscmd;
+                        int respond_head = ftdi->respond_head++;
+                        struct u132_respond *respond = &ftdi->respond[
+                                RESPOND_MASK & respond_head];
+                        u32 data = ftdi->response[7];
+                        data <<= 8;
+                        data |= ftdi->response[6];
+                        data <<= 8;
+                        data |= ftdi->response[5];
+                        data <<= 8;
+                        data |= ftdi->response[4];
+                        *respond->value = data;
+                        *respond->result = 0;
+                        complete(&respond->wait_completion);
+                        ftdi->received = 0;
+                        ftdi->expected = 4;
+                        ftdi->ed_found = 0;
+                        b = ftdi->response;
+                        buscmd = (ftdi->response[0] >> 0) & 0x0F;
+                        if (buscmd == 0x00) {
+                        } else if (buscmd == 0x02) {
+                        } else if (buscmd == 0x06) {
+                        } else if (buscmd == 0x0A) {
+                        } else
+                                dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) va"
+                                        "lue = %08X\n", buscmd, data);
+                        goto have;
+                } else {
+                        if ((ftdi->response[0] & 0x80) == 0x00) {
+                                ftdi->expected = 8;
+                                goto have;
+                        } else {
+                                int ed_number = (ftdi->response[0] >> 5) & 0x03;
+                                int ed_type = (ftdi->response[0] >> 0) & 0x03;
+                                u16 ed_length = (ftdi->response[2] << 8) |
+                                        ftdi->response[1];
+                                struct u132_target *target = &ftdi->target[
+                                        ed_number];
+                                target->halted = (ftdi->response[0] >> 3) &
+                                        0x01;
+                                target->skipped = (ftdi->response[0] >> 2) &
+                                        0x01;
+                                target->toggle_bits = (ftdi->response[3] >> 6)
+                                        & 0x03;
+                                target->error_count = (ftdi->response[3] >> 4)
+                                        & 0x03;
+                                target->condition_code = (ftdi->response[
+                                        3] >> 0) & 0x0F;
+                                if ((ftdi->response[0] & 0x10) == 0x00) {
+                                        b = have_ed_set_response(ftdi, target,
+                                                ed_length, ed_number, ed_type,
+                                                b);
+                                        goto have;
+                                } else {
+                                        b = have_ed_get_response(ftdi, target,
+                                                ed_length, ed_number, ed_type,
+                                                b);
+                                        goto have;
+                                }
+                        }
+                }
+        } else
+                goto more;
+}
+
+
+/*
+* create a urb, and a buffer for it, and copy the data to the urb
+*
+*/
+static ssize_t ftdi_elan_write(struct file *file,
+			       const char __user *user_buffer, size_t count,
+			       loff_t *ppos)
+{
+        int retval = 0;
+        struct urb *urb;
+        char *buf;
+        struct usb_ftdi *ftdi = file->private_data;
+
+        if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        }
+        if (count == 0) {
+                goto exit;
+        }
+        urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!urb) {
+                retval = -ENOMEM;
+                goto error_1;
+        }
+        buf = usb_alloc_coherent(ftdi->udev, count, GFP_KERNEL,
+                &urb->transfer_dma);
+        if (!buf) {
+                retval = -ENOMEM;
+                goto error_2;
+        }
+        if (copy_from_user(buf, user_buffer, count)) {
+                retval = -EFAULT;
+                goto error_3;
+        }
+        usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
+                ftdi->bulk_out_endpointAddr), buf, count,
+                ftdi_elan_write_bulk_callback, ftdi);
+        urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+        retval = usb_submit_urb(urb, GFP_KERNEL);
+        if (retval) {
+                dev_err(&ftdi->udev->dev, "failed submitting write urb, error %"
+                        "d\n", retval);
+                goto error_3;
+        }
+        usb_free_urb(urb);
+
+exit:
+        return count;
+error_3:
+	usb_free_coherent(ftdi->udev, count, buf, urb->transfer_dma);
+error_2:
+	usb_free_urb(urb);
+error_1:
+	return retval;
+}
+
+static const struct file_operations ftdi_elan_fops = {
+        .owner = THIS_MODULE,
+        .llseek = no_llseek,
+        .read = ftdi_elan_read,
+        .write = ftdi_elan_write,
+        .open = ftdi_elan_open,
+        .release = ftdi_elan_release,
+};
+
+/*
+* usb class driver info in order to get a minor number from the usb core,
+* and to have the device registered with the driver core
+*/
+static struct usb_class_driver ftdi_elan_jtag_class = {
+        .name = "ftdi-%d-jtag",
+        .fops = &ftdi_elan_fops,
+        .minor_base = USB_FTDI_ELAN_MINOR_BASE,
+};
+
+/*
+* the following definitions are for the
+* ELAN FPGA state machgine processor that
+* lies on the other side of the FTDI chip
+*/
+#define cPCIu132rd 0x0
+#define cPCIu132wr 0x1
+#define cPCIiord 0x2
+#define cPCIiowr 0x3
+#define cPCImemrd 0x6
+#define cPCImemwr 0x7
+#define cPCIcfgrd 0xA
+#define cPCIcfgwr 0xB
+#define cPCInull 0xF
+#define cU132cmd_status 0x0
+#define cU132flash 0x1
+#define cPIDsetup 0x0
+#define cPIDout 0x1
+#define cPIDin 0x2
+#define cPIDinonce 0x3
+#define cCCnoerror 0x0
+#define cCCcrc 0x1
+#define cCCbitstuff 0x2
+#define cCCtoggle 0x3
+#define cCCstall 0x4
+#define cCCnoresp 0x5
+#define cCCbadpid1 0x6
+#define cCCbadpid2 0x7
+#define cCCdataoverrun 0x8
+#define cCCdataunderrun 0x9
+#define cCCbuffoverrun 0xC
+#define cCCbuffunderrun 0xD
+#define cCCnotaccessed 0xF
+static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data)
+{
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x00 | cPCIu132wr;
+                        command->length = 0x04;
+                        command->address = 0x00;
+                        command->width = 0x00;
+                        command->follows = 4;
+                        command->value = data;
+                        command->buffer = &command->value;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset,
+        u8 width, u32 data)
+{
+        u8 addressofs = config_offset / 4;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x00 | (cPCIcfgwr & 0x0F);
+                        command->length = 0x04;
+                        command->address = addressofs;
+                        command->width = 0x00 | (width & 0x0F);
+                        command->follows = 4;
+                        command->value = data;
+                        command->buffer = &command->value;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset,
+        u8 width, u32 data)
+{
+        u8 addressofs = mem_offset / 4;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x00 | (cPCImemwr & 0x0F);
+                        command->length = 0x04;
+                        command->address = addressofs;
+                        command->width = 0x00 | (width & 0x0F);
+                        command->follows = 4;
+                        command->value = data;
+                        command->buffer = &command->value;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset,
+        u8 width, u32 data)
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem);
+static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data)
+{
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                int respond_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                respond_size = ftdi->respond_next - ftdi->respond_head;
+                if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
+                        {
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        struct u132_respond *respond = &ftdi->respond[
+                                RESPOND_MASK & ftdi->respond_next];
+                        int result = -ENODEV;
+                        respond->result = &result;
+                        respond->header = command->header = 0x00 | cPCIu132rd;
+                        command->length = 0x04;
+                        respond->address = command->address = cU132cmd_status;
+                        command->width = 0x00;
+                        command->follows = 0;
+                        command->value = 0;
+                        command->buffer = NULL;
+                        respond->value = data;
+                        init_completion(&respond->wait_completion);
+                        ftdi->command_next += 1;
+                        ftdi->respond_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        wait_for_completion(&respond->wait_completion);
+                        return result;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset,
+        u8 width, u32 *data)
+{
+        u8 addressofs = config_offset / 4;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                int respond_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                respond_size = ftdi->respond_next - ftdi->respond_head;
+                if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
+                        {
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        struct u132_respond *respond = &ftdi->respond[
+                                RESPOND_MASK & ftdi->respond_next];
+                        int result = -ENODEV;
+                        respond->result = &result;
+                        respond->header = command->header = 0x00 | (cPCIcfgrd &
+                                0x0F);
+                        command->length = 0x04;
+                        respond->address = command->address = addressofs;
+                        command->width = 0x00 | (width & 0x0F);
+                        command->follows = 0;
+                        command->value = 0;
+                        command->buffer = NULL;
+                        respond->value = data;
+                        init_completion(&respond->wait_completion);
+                        ftdi->command_next += 1;
+                        ftdi->respond_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        wait_for_completion(&respond->wait_completion);
+                        return result;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset,
+        u8 width, u32 *data)
+{
+        u8 addressofs = mem_offset / 4;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                int respond_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                respond_size = ftdi->respond_next - ftdi->respond_head;
+                if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
+                        {
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        struct u132_respond *respond = &ftdi->respond[
+                                RESPOND_MASK & ftdi->respond_next];
+                        int result = -ENODEV;
+                        respond->result = &result;
+                        respond->header = command->header = 0x00 | (cPCImemrd &
+                                0x0F);
+                        command->length = 0x04;
+                        respond->address = command->address = addressofs;
+                        command->width = 0x00 | (width & 0x0F);
+                        command->follows = 0;
+                        command->value = 0;
+                        command->buffer = NULL;
+                        respond->value = data;
+                        init_completion(&respond->wait_completion);
+                        ftdi->command_next += 1;
+                        ftdi->respond_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        wait_for_completion(&respond->wait_completion);
+                        return result;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset,
+        u8 width, u32 *data)
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else
+                return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem);
+static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        u8 ed = ed_number - 1;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        struct u132_target *target = &ftdi->target[ed];
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x80 | (ed << 5);
+                        command->length = 0x8007;
+                        command->address = (toggle_bits << 6) | (ep_number << 2)
+                                | (address << 0);
+                        command->width = usb_maxpacket(urb->dev, urb->pipe,
+                                usb_pipeout(urb->pipe));
+                        command->follows = 8;
+                        command->value = 0;
+                        command->buffer = urb->setup_packet;
+                        target->callback = callback;
+                        target->endp = endp;
+                        target->urb = urb;
+                        target->active = 1;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address,
+                ep_number, toggle_bits, callback);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup);
+static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        u8 ed = ed_number - 1;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        struct u132_target *target = &ftdi->target[ed];
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        u32 remaining_length = urb->transfer_buffer_length -
+                                urb->actual_length;
+                        command->header = 0x82 | (ed << 5);
+                        if (remaining_length == 0) {
+                                command->length = 0x0000;
+                        } else if (remaining_length > 1024) {
+                                command->length = 0x8000 | 1023;
+                        } else
+                                command->length = 0x8000 | (remaining_length -
+                                        1);
+                        command->address = (toggle_bits << 6) | (ep_number << 2)
+                                | (address << 0);
+                        command->width = usb_maxpacket(urb->dev, urb->pipe,
+                                usb_pipeout(urb->pipe));
+                        command->follows = 0;
+                        command->value = 0;
+                        command->buffer = NULL;
+                        target->callback = callback;
+                        target->endp = endp;
+                        target->urb = urb;
+                        target->active = 1;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address,
+                ep_number, toggle_bits, callback);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input);
+static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        u8 ed = ed_number - 1;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        struct u132_target *target = &ftdi->target[ed];
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x81 | (ed << 5);
+                        command->length = 0x0000;
+                        command->address = (toggle_bits << 6) | (ep_number << 2)
+                                | (address << 0);
+                        command->width = usb_maxpacket(urb->dev, urb->pipe,
+                                usb_pipeout(urb->pipe));
+                        command->follows = 0;
+                        command->value = 0;
+                        command->buffer = NULL;
+                        target->callback = callback;
+                        target->endp = endp;
+                        target->urb = urb;
+                        target->active = 1;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address,
+                ep_number, toggle_bits, callback);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty);
+static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        u8 ed = ed_number - 1;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        u8 *b;
+                        u16 urb_size;
+                        int i = 0;
+                        char data[30 *3 + 4];
+                        char *d = data;
+                        int m = (sizeof(data) - 1) / 3;
+                        int l = 0;
+                        struct u132_target *target = &ftdi->target[ed];
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x81 | (ed << 5);
+                        command->address = (toggle_bits << 6) | (ep_number << 2)
+                                | (address << 0);
+                        command->width = usb_maxpacket(urb->dev, urb->pipe,
+                                usb_pipeout(urb->pipe));
+                        command->follows = min_t(u32, 1024,
+                                urb->transfer_buffer_length -
+                                urb->actual_length);
+                        command->value = 0;
+                        command->buffer = urb->transfer_buffer +
+                                urb->actual_length;
+                        command->length = 0x8000 | (command->follows - 1);
+                        b = command->buffer;
+                        urb_size = command->follows;
+                        data[0] = 0;
+                        while (urb_size-- > 0) {
+                                if (i > m) {
+                                } else if (i++ < m) {
+                                        int w = sprintf(d, " %02X", *b++);
+                                        d += w;
+                                        l += w;
+                                } else
+                                        d += sprintf(d, " ..");
+                        }
+                        target->callback = callback;
+                        target->endp = endp;
+                        target->urb = urb;
+                        target->active = 1;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address,
+                ep_number, toggle_bits, callback);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output);
+static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        u8 ed = ed_number - 1;
+      wait:if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else {
+                int command_size;
+                mutex_lock(&ftdi->u132_lock);
+                command_size = ftdi->command_next - ftdi->command_head;
+                if (command_size < COMMAND_SIZE) {
+                        u32 remaining_length = urb->transfer_buffer_length -
+                                urb->actual_length;
+                        struct u132_target *target = &ftdi->target[ed];
+                        struct u132_command *command = &ftdi->command[
+                                COMMAND_MASK & ftdi->command_next];
+                        command->header = 0x83 | (ed << 5);
+                        if (remaining_length == 0) {
+                                command->length = 0x0000;
+                        } else if (remaining_length > 1024) {
+                                command->length = 0x8000 | 1023;
+                        } else
+                                command->length = 0x8000 | (remaining_length -
+                                        1);
+                        command->address = (toggle_bits << 6) | (ep_number << 2)
+                                | (address << 0);
+                        command->width = usb_maxpacket(urb->dev, urb->pipe,
+                                usb_pipeout(urb->pipe));
+                        command->follows = 0;
+                        command->value = 0;
+                        command->buffer = NULL;
+                        target->callback = callback;
+                        target->endp = endp;
+                        target->urb = urb;
+                        target->active = 1;
+                        ftdi->command_next += 1;
+                        ftdi_elan_kick_command_queue(ftdi);
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        mutex_unlock(&ftdi->u132_lock);
+                        msleep(100);
+                        goto wait;
+                }
+        }
+}
+
+int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number,
+        void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
+        void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+        int toggle_bits, int error_count, int condition_code, int repeat_number,
+         int halted, int skipped, int actual, int non_null))
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address,
+                ep_number, toggle_bits, callback);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single);
+static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number,
+        void *endp)
+{
+        u8 ed = ed_number - 1;
+        if (ftdi->disconnected > 0) {
+                return -ENODEV;
+        } else if (ftdi->initialized == 0) {
+                return -ENODEV;
+        } else {
+                struct u132_target *target = &ftdi->target[ed];
+                mutex_lock(&ftdi->u132_lock);
+                if (target->abandoning > 0) {
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                } else {
+                        target->abandoning = 1;
+                      wait_1:if (target->active == 1) {
+                                int command_size = ftdi->command_next -
+                                        ftdi->command_head;
+                                if (command_size < COMMAND_SIZE) {
+                                        struct u132_command *command =
+                                                &ftdi->command[COMMAND_MASK &
+                                                ftdi->command_next];
+                                        command->header = 0x80 | (ed << 5) |
+                                                0x4;
+                                        command->length = 0x00;
+                                        command->address = 0x00;
+                                        command->width = 0x00;
+                                        command->follows = 0;
+                                        command->value = 0;
+                                        command->buffer = &command->value;
+                                        ftdi->command_next += 1;
+                                        ftdi_elan_kick_command_queue(ftdi);
+                                } else {
+                                        mutex_unlock(&ftdi->u132_lock);
+                                        msleep(100);
+                                        mutex_lock(&ftdi->u132_lock);
+                                        goto wait_1;
+                                }
+                        }
+                        mutex_unlock(&ftdi->u132_lock);
+                        return 0;
+                }
+        }
+}
+
+int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number,
+        void *endp)
+{
+        struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
+        return ftdi_elan_edset_flush(ftdi, ed_number, endp);
+}
+
+
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush);
+static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi)
+{
+        int retry_on_empty = 10;
+        int retry_on_timeout = 5;
+        int retry_on_status = 20;
+      more:{
+                int packet_bytes = 0;
+                int retval = usb_bulk_msg(ftdi->udev,
+                        usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
+                         ftdi->bulk_in_buffer, ftdi->bulk_in_size,
+                        &packet_bytes, 100);
+                if (packet_bytes > 2) {
+                        char diag[30 *3 + 4];
+                        char *d = diag;
+                        int m = (sizeof(diag) - 1) / 3;
+                        char *b = ftdi->bulk_in_buffer;
+                        int bytes_read = 0;
+                        diag[0] = 0;
+                        while (packet_bytes-- > 0) {
+                                char c = *b++;
+                                if (bytes_read < m) {
+                                        d += sprintf(d, " %02X",
+                                                0x000000FF & c);
+                                } else if (bytes_read > m) {
+                                } else
+                                        d += sprintf(d, " ..");
+                                bytes_read += 1;
+                                continue;
+                        }
+                        goto more;
+                } else if (packet_bytes > 1) {
+                        char s1 = ftdi->bulk_in_buffer[0];
+                        char s2 = ftdi->bulk_in_buffer[1];
+                        if (s1 == 0x31 && s2 == 0x60) {
+                                return 0;
+                        } else if (retry_on_status-- > 0) {
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
+                                        "imit reached\n");
+                                return -EFAULT;
+                        }
+                } else if (packet_bytes > 0) {
+                        char b1 = ftdi->bulk_in_buffer[0];
+                        dev_err(&ftdi->udev->dev, "only one byte flushed from F"
+                                "TDI = %02X\n", b1);
+                        if (retry_on_status-- > 0) {
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
+                                        "imit reached\n");
+                                return -EFAULT;
+                        }
+                } else if (retval == -ETIMEDOUT) {
+                        if (retry_on_timeout-- > 0) {
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "TIMED OUT retry limi"
+                                        "t reached\n");
+                                return -ENOMEM;
+                        }
+                } else if (retval == 0) {
+                        if (retry_on_empty-- > 0) {
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "empty packet retry l"
+                                        "imit reached\n");
+                                return -ENOMEM;
+                        }
+                } else {
+                        dev_err(&ftdi->udev->dev, "error = %d\n", retval);
+                        return retval;
+                }
+        }
+        return -1;
+}
+
+
+/*
+* send the long flush sequence
+*
+*/
+static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi)
+{
+        int retval;
+        struct urb *urb;
+        char *buf;
+        int I = 257;
+        int i = 0;
+        urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!urb) {
+                dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequ"
+                        "ence\n");
+                return -ENOMEM;
+        }
+        buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
+        if (!buf) {
+                dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq"
+                        "uence\n");
+                usb_free_urb(urb);
+                return -ENOMEM;
+        }
+        while (I-- > 0)
+                buf[i++] = 0x55;
+        usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
+                ftdi->bulk_out_endpointAddr), buf, i,
+                ftdi_elan_write_bulk_callback, ftdi);
+        urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+        retval = usb_submit_urb(urb, GFP_KERNEL);
+        if (retval) {
+                dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
+                        "flush sequence\n");
+                usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma);
+                usb_free_urb(urb);
+                return -ENOMEM;
+        }
+        usb_free_urb(urb);
+        return 0;
+}
+
+
+/*
+* send the reset sequence
+*
+*/
+static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi)
+{
+        int retval;
+        struct urb *urb;
+        char *buf;
+        int I = 4;
+        int i = 0;
+        urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!urb) {
+                dev_err(&ftdi->udev->dev, "could not get a urb for the reset se"
+                        "quence\n");
+                return -ENOMEM;
+        }
+        buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
+        if (!buf) {
+                dev_err(&ftdi->udev->dev, "could not get a buffer for the reset"
+                        " sequence\n");
+                usb_free_urb(urb);
+                return -ENOMEM;
+        }
+        buf[i++] = 0x55;
+        buf[i++] = 0xAA;
+        buf[i++] = 0x5A;
+        buf[i++] = 0xA5;
+        usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
+                ftdi->bulk_out_endpointAddr), buf, i,
+                ftdi_elan_write_bulk_callback, ftdi);
+        urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+        retval = usb_submit_urb(urb, GFP_KERNEL);
+        if (retval) {
+                dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
+                        "reset sequence\n");
+                usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma);
+                usb_free_urb(urb);
+                return -ENOMEM;
+        }
+        usb_free_urb(urb);
+        return 0;
+}
+
+static int ftdi_elan_synchronize(struct usb_ftdi *ftdi)
+{
+        int retval;
+        int long_stop = 10;
+        int retry_on_timeout = 5;
+        int retry_on_empty = 10;
+        int err_count = 0;
+        retval = ftdi_elan_flush_input_fifo(ftdi);
+        if (retval)
+                return retval;
+        ftdi->bulk_in_left = 0;
+        ftdi->bulk_in_last = -1;
+        while (long_stop-- > 0) {
+                int read_stop;
+                int read_stuck;
+                retval = ftdi_elan_synchronize_flush(ftdi);
+                if (retval)
+                        return retval;
+                retval = ftdi_elan_flush_input_fifo(ftdi);
+                if (retval)
+                        return retval;
+              reset:retval = ftdi_elan_synchronize_reset(ftdi);
+                if (retval)
+                        return retval;
+                read_stop = 100;
+                read_stuck = 10;
+              read:{
+                        int packet_bytes = 0;
+                        retval = usb_bulk_msg(ftdi->udev,
+                                usb_rcvbulkpipe(ftdi->udev,
+                                ftdi->bulk_in_endpointAddr),
+                                ftdi->bulk_in_buffer, ftdi->bulk_in_size,
+                                &packet_bytes, 500);
+                        if (packet_bytes > 2) {
+                                char diag[30 *3 + 4];
+                                char *d = diag;
+                                int m = (sizeof(diag) - 1) / 3;
+                                char *b = ftdi->bulk_in_buffer;
+                                int bytes_read = 0;
+                                unsigned char c = 0;
+                                diag[0] = 0;
+                                while (packet_bytes-- > 0) {
+                                        c = *b++;
+                                        if (bytes_read < m) {
+                                                d += sprintf(d, " %02X", c);
+                                        } else if (bytes_read > m) {
+                                        } else
+                                                d += sprintf(d, " ..");
+                                        bytes_read += 1;
+                                        continue;
+                                }
+                                if (c == 0x7E) {
+                                        return 0;
+                                } else {
+                                        if (c == 0x55) {
+                                                goto read;
+                                        } else if (read_stop-- > 0) {
+                                                goto read;
+                                        } else {
+                                                dev_err(&ftdi->udev->dev, "retr"
+                                                        "y limit reached\n");
+                                                continue;
+                                        }
+                                }
+                        } else if (packet_bytes > 1) {
+                                unsigned char s1 = ftdi->bulk_in_buffer[0];
+                                unsigned char s2 = ftdi->bulk_in_buffer[1];
+                                if (s1 == 0x31 && s2 == 0x00) {
+                                        if (read_stuck-- > 0) {
+                                                goto read;
+                                        } else
+                                                goto reset;
+                                } else if (s1 == 0x31 && s2 == 0x60) {
+                                        if (read_stop-- > 0) {
+                                                goto read;
+                                        } else {
+                                                dev_err(&ftdi->udev->dev, "retr"
+                                                        "y limit reached\n");
+                                                continue;
+                                        }
+                                } else {
+                                        if (read_stop-- > 0) {
+                                                goto read;
+                                        } else {
+                                                dev_err(&ftdi->udev->dev, "retr"
+                                                        "y limit reached\n");
+                                                continue;
+                                        }
+                                }
+                        } else if (packet_bytes > 0) {
+                                if (read_stop-- > 0) {
+                                        goto read;
+                                } else {
+                                        dev_err(&ftdi->udev->dev, "retry limit "
+                                                "reached\n");
+                                        continue;
+                                }
+                        } else if (retval == -ETIMEDOUT) {
+                                if (retry_on_timeout-- > 0) {
+                                        goto read;
+                                } else {
+                                        dev_err(&ftdi->udev->dev, "TIMED OUT re"
+                                                "try limit reached\n");
+                                        continue;
+                                }
+                        } else if (retval == 0) {
+                                if (retry_on_empty-- > 0) {
+                                        goto read;
+                                } else {
+                                        dev_err(&ftdi->udev->dev, "empty packet"
+                                                " retry limit reached\n");
+                                        continue;
+                                }
+                        } else {
+                                err_count += 1;
+                                dev_err(&ftdi->udev->dev, "error = %d\n",
+                                        retval);
+                                if (read_stop-- > 0) {
+                                        goto read;
+                                } else {
+                                        dev_err(&ftdi->udev->dev, "retry limit "
+                                                "reached\n");
+                                        continue;
+                                }
+                        }
+                }
+        }
+        dev_err(&ftdi->udev->dev, "failed to synchronize\n");
+        return -EFAULT;
+}
+
+static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi)
+{
+        int retry_on_empty = 10;
+        int retry_on_timeout = 5;
+        int retry_on_status = 50;
+      more:{
+                int packet_bytes = 0;
+                int retval = usb_bulk_msg(ftdi->udev,
+                        usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
+                         ftdi->bulk_in_buffer, ftdi->bulk_in_size,
+                        &packet_bytes, 1000);
+                if (packet_bytes > 2) {
+                        char diag[30 *3 + 4];
+                        char *d = diag;
+                        int m = (sizeof(diag) - 1) / 3;
+                        char *b = ftdi->bulk_in_buffer;
+                        int bytes_read = 0;
+                        diag[0] = 0;
+                        while (packet_bytes-- > 0) {
+                                char c = *b++;
+                                if (bytes_read < m) {
+                                        d += sprintf(d, " %02X",
+                                                0x000000FF & c);
+                                } else if (bytes_read > m) {
+                                } else
+                                        d += sprintf(d, " ..");
+                                bytes_read += 1;
+                                continue;
+                        }
+                        goto more;
+                } else if (packet_bytes > 1) {
+                        char s1 = ftdi->bulk_in_buffer[0];
+                        char s2 = ftdi->bulk_in_buffer[1];
+                        if (s1 == 0x31 && s2 == 0x60) {
+                                return 0;
+                        } else if (retry_on_status-- > 0) {
+                                msleep(5);
+                                goto more;
+                        } else
+                                return -EFAULT;
+                } else if (packet_bytes > 0) {
+                        char b1 = ftdi->bulk_in_buffer[0];
+                        dev_err(&ftdi->udev->dev, "only one byte flushed from F"
+                                "TDI = %02X\n", b1);
+                        if (retry_on_status-- > 0) {
+                                msleep(5);
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
+                                        "imit reached\n");
+                                return -EFAULT;
+                        }
+                } else if (retval == -ETIMEDOUT) {
+                        if (retry_on_timeout-- > 0) {
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "TIMED OUT retry limi"
+                                        "t reached\n");
+                                return -ENOMEM;
+                        }
+                } else if (retval == 0) {
+                        if (retry_on_empty-- > 0) {
+                                goto more;
+                        } else {
+                                dev_err(&ftdi->udev->dev, "empty packet retry l"
+                                        "imit reached\n");
+                                return -ENOMEM;
+                        }
+                } else {
+                        dev_err(&ftdi->udev->dev, "error = %d\n", retval);
+                        return -ENOMEM;
+                }
+        }
+        return -1;
+}
+
+static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi)
+{
+        int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg);
+        if (UxxxStatus)
+                return UxxxStatus;
+        if (ftdi->controlreg & 0x00400000) {
+                if (ftdi->card_ejected) {
+                } else {
+                        ftdi->card_ejected = 1;
+                        dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = "
+                                "%08X\n", ftdi->controlreg);
+                }
+                return -ENODEV;
+        } else {
+                u8 fn = ftdi->function - 1;
+                int activePCIfn = fn << 8;
+                u32 pcidata;
+                u32 pciVID;
+                u32 pciPID;
+                int reg = 0;
+                UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                        &pcidata);
+                if (UxxxStatus)
+                        return UxxxStatus;
+                pciVID = pcidata & 0xFFFF;
+                pciPID = (pcidata >> 16) & 0xFFFF;
+                if (pciVID == ftdi->platform_data.vendor && pciPID ==
+                        ftdi->platform_data.device) {
+                        return 0;
+                } else {
+                        dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X devi"
+                                "ce=%04X pciPID=%04X\n",
+                                ftdi->platform_data.vendor, pciVID,
+                                ftdi->platform_data.device, pciPID);
+                        return -ENODEV;
+                }
+        }
+}
+
+
+#define ftdi_read_pcimem(ftdi, member, data) ftdi_elan_read_pcimem(ftdi, \
+        offsetof(struct ohci_regs, member), 0, data);
+#define ftdi_write_pcimem(ftdi, member, data) ftdi_elan_write_pcimem(ftdi, \
+        offsetof(struct ohci_regs, member), 0, data);
+
+#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
+#define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
+        OHCI_INTR_WDH)
+static int ftdi_elan_check_controller(struct usb_ftdi *ftdi, int quirk)
+{
+        int devices = 0;
+        int retval;
+        u32 hc_control;
+        int num_ports;
+        u32 control;
+        u32 rh_a = -1;
+        u32 status;
+        u32 fminterval;
+        u32 hc_fminterval;
+        u32 periodicstart;
+        u32 cmdstatus;
+        u32 roothub_a;
+        int mask = OHCI_INTR_INIT;
+        int sleep_time = 0;
+        int reset_timeout = 30;        /* ... allow extra time */
+        int temp;
+        retval = ftdi_write_pcimem(ftdi, intrdisable, OHCI_INTR_MIE);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, control, &control);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, roothub.a, &rh_a);
+        if (retval)
+                return retval;
+        num_ports = rh_a & RH_A_NDP;
+        retval = ftdi_read_pcimem(ftdi, fminterval, &hc_fminterval);
+        if (retval)
+                return retval;
+        hc_fminterval &= 0x3fff;
+        if (hc_fminterval != FI) {
+        }
+        hc_fminterval |= FSMP(hc_fminterval) << 16;
+        retval = ftdi_read_pcimem(ftdi, control, &hc_control);
+        if (retval)
+                return retval;
+        switch (hc_control & OHCI_CTRL_HCFS) {
+        case OHCI_USB_OPER:
+                sleep_time = 0;
+                break;
+        case OHCI_USB_SUSPEND:
+        case OHCI_USB_RESUME:
+                hc_control &= OHCI_CTRL_RWC;
+                hc_control |= OHCI_USB_RESUME;
+                sleep_time = 10;
+                break;
+        default:
+                hc_control &= OHCI_CTRL_RWC;
+                hc_control |= OHCI_USB_RESET;
+                sleep_time = 50;
+                break;
+        }
+        retval = ftdi_write_pcimem(ftdi, control, hc_control);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, control, &control);
+        if (retval)
+                return retval;
+        msleep(sleep_time);
+        retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a);
+        if (retval)
+                return retval;
+        if (!(roothub_a & RH_A_NPS)) {        /* power down each port */
+                for (temp = 0; temp < num_ports; temp++) {
+                        retval = ftdi_write_pcimem(ftdi,
+                                roothub.portstatus[temp], RH_PS_LSDA);
+                        if (retval)
+                                return retval;
+                }
+        }
+        retval = ftdi_read_pcimem(ftdi, control, &control);
+        if (retval)
+                return retval;
+      retry:retval = ftdi_read_pcimem(ftdi, cmdstatus, &status);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_HCR);
+        if (retval)
+                return retval;
+      extra:{
+                retval = ftdi_read_pcimem(ftdi, cmdstatus, &status);
+                if (retval)
+                        return retval;
+                if (0 != (status & OHCI_HCR)) {
+                        if (--reset_timeout == 0) {
+                                dev_err(&ftdi->udev->dev, "USB HC reset timed o"
+                                        "ut!\n");
+                                return -ENODEV;
+                        } else {
+                                msleep(5);
+                                goto extra;
+                        }
+                }
+        }
+        if (quirk & OHCI_QUIRK_INITRESET) {
+                retval = ftdi_write_pcimem(ftdi, control, hc_control);
+                if (retval)
+                        return retval;
+                retval = ftdi_read_pcimem(ftdi, control, &control);
+                if (retval)
+                        return retval;
+        }
+        retval = ftdi_write_pcimem(ftdi, ed_controlhead, 0x00000000);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, ed_bulkhead, 0x11000000);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, hcca, 0x00000000);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, fminterval,
+                ((fminterval & FIT) ^ FIT) | hc_fminterval);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, periodicstart,
+                ((9 *hc_fminterval) / 10) & 0x3fff);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, periodicstart, &periodicstart);
+        if (retval)
+                return retval;
+        if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) {
+                if (!(quirk & OHCI_QUIRK_INITRESET)) {
+                        quirk |= OHCI_QUIRK_INITRESET;
+                        goto retry;
+                } else
+                        dev_err(&ftdi->udev->dev, "init err(%08x %04x)\n",
+                                fminterval, periodicstart);
+        }                        /* start controller operations */
+        hc_control &= OHCI_CTRL_RWC;
+        hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER;
+        retval = ftdi_write_pcimem(ftdi, control, hc_control);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_BLF);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, cmdstatus, &cmdstatus);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, control, &control);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_DRWE);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, intrstatus, mask);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, intrdisable,
+                OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO |
+                OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH |
+                OHCI_INTR_SO);
+        if (retval)
+                return retval;        /* handle root hub init quirks ... */
+        retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a);
+        if (retval)
+                return retval;
+        roothub_a &= ~(RH_A_PSM | RH_A_OCPM);
+        if (quirk & OHCI_QUIRK_SUPERIO) {
+                roothub_a |= RH_A_NOCP;
+                roothub_a &= ~(RH_A_POTPGT | RH_A_NPS);
+                retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a);
+                if (retval)
+                        return retval;
+        } else if ((quirk & OHCI_QUIRK_AMD756) || distrust_firmware) {
+                roothub_a |= RH_A_NPS;
+                retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a);
+                if (retval)
+                        return retval;
+        }
+        retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_LPSC);
+        if (retval)
+                return retval;
+        retval = ftdi_write_pcimem(ftdi, roothub.b,
+                (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM);
+        if (retval)
+                return retval;
+        retval = ftdi_read_pcimem(ftdi, control, &control);
+        if (retval)
+                return retval;
+        mdelay((roothub_a >> 23) & 0x1fe);
+        for (temp = 0; temp < num_ports; temp++) {
+                u32 portstatus;
+                retval = ftdi_read_pcimem(ftdi, roothub.portstatus[temp],
+                        &portstatus);
+                if (retval)
+                        return retval;
+                if (1 & portstatus)
+                        devices += 1;
+        }
+        return devices;
+}
+
+static int ftdi_elan_setup_controller(struct usb_ftdi *ftdi, int fn)
+{
+        u32 latence_timer;
+        int UxxxStatus;
+        u32 pcidata;
+        int reg = 0;
+        int activePCIfn = fn << 8;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800);
+        if (UxxxStatus)
+                return UxxxStatus;
+        reg = 16;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
+                0xFFFFFFFF);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
+                0xF0000000);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        reg = 12;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &latence_timer);
+        if (UxxxStatus)
+                return UxxxStatus;
+        latence_timer &= 0xFFFF00FF;
+        latence_timer |= 0x00001600;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
+                latence_timer);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        reg = 4;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
+                0x06);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        for (reg = 0; reg <= 0x54; reg += 4) {
+                UxxxStatus = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
+                if (UxxxStatus)
+                        return UxxxStatus;
+        }
+        return 0;
+}
+
+static int ftdi_elan_close_controller(struct usb_ftdi *ftdi, int fn)
+{
+        u32 latence_timer;
+        int UxxxStatus;
+        u32 pcidata;
+        int reg = 0;
+        int activePCIfn = fn << 8;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800);
+        if (UxxxStatus)
+                return UxxxStatus;
+        reg = 16;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
+                0xFFFFFFFF);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
+                0x00000000);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        reg = 12;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &latence_timer);
+        if (UxxxStatus)
+                return UxxxStatus;
+        latence_timer &= 0xFFFF00FF;
+        latence_timer |= 0x00001600;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
+                latence_timer);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        reg = 4;
+        UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
+                0x00);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                &pcidata);
+        if (UxxxStatus)
+                return UxxxStatus;
+        return 0;
+}
+
+static int ftdi_elan_found_controller(struct usb_ftdi *ftdi, int fn, int quirk)
+{
+        int result;
+        int UxxxStatus;
+        UxxxStatus = ftdi_elan_setup_controller(ftdi, fn);
+        if (UxxxStatus)
+                return UxxxStatus;
+        result = ftdi_elan_check_controller(ftdi, quirk);
+        UxxxStatus = ftdi_elan_close_controller(ftdi, fn);
+        if (UxxxStatus)
+                return UxxxStatus;
+        return result;
+}
+
+static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi)
+{
+        u32 controlreg;
+        u8 sensebits;
+        int UxxxStatus;
+        UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L);
+        if (UxxxStatus)
+                return UxxxStatus;
+        msleep(750);
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000);
+        if (UxxxStatus)
+                return UxxxStatus;
+        msleep(250);
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
+        if (UxxxStatus)
+                return UxxxStatus;
+        UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
+        if (UxxxStatus)
+                return UxxxStatus;
+        msleep(1000);
+        sensebits = (controlreg >> 16) & 0x000F;
+        if (0x0D == sensebits)
+                return 0;
+        else
+		return - ENXIO;
+}
+
+static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi)
+{
+        int UxxxStatus;
+        u32 pcidata;
+        int reg = 0;
+        u8 fn;
+        int activePCIfn = 0;
+        int max_devices = 0;
+        int controllers = 0;
+        int unrecognized = 0;
+        ftdi->function = 0;
+        for (fn = 0; (fn < 4); fn++) {
+                u32 pciVID = 0;
+                u32 pciPID = 0;
+                int devices = 0;
+                activePCIfn = fn << 8;
+                UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
+                        &pcidata);
+                if (UxxxStatus)
+                        return UxxxStatus;
+                pciVID = pcidata & 0xFFFF;
+                pciPID = (pcidata >> 16) & 0xFFFF;
+                if ((pciVID == PCI_VENDOR_ID_OPTI) && (pciPID == 0xc861)) {
+                        devices = ftdi_elan_found_controller(ftdi, fn, 0);
+                        controllers += 1;
+                } else if ((pciVID == PCI_VENDOR_ID_NEC) && (pciPID == 0x0035))
+                        {
+                        devices = ftdi_elan_found_controller(ftdi, fn, 0);
+                        controllers += 1;
+                } else if ((pciVID == PCI_VENDOR_ID_AL) && (pciPID == 0x5237)) {
+                        devices = ftdi_elan_found_controller(ftdi, fn, 0);
+                        controllers += 1;
+                } else if ((pciVID == PCI_VENDOR_ID_ATT) && (pciPID == 0x5802))
+                        {
+                        devices = ftdi_elan_found_controller(ftdi, fn, 0);
+                        controllers += 1;
+                } else if (pciVID == PCI_VENDOR_ID_AMD && pciPID == 0x740c) {
+                        devices = ftdi_elan_found_controller(ftdi, fn,
+                                OHCI_QUIRK_AMD756);
+                        controllers += 1;
+                } else if (pciVID == PCI_VENDOR_ID_COMPAQ && pciPID == 0xa0f8) {
+                        devices = ftdi_elan_found_controller(ftdi, fn,
+                                OHCI_QUIRK_ZFMICRO);
+                        controllers += 1;
+                } else if (0 == pcidata) {
+                } else
+                        unrecognized += 1;
+                if (devices > max_devices) {
+                        max_devices = devices;
+                        ftdi->function = fn + 1;
+                        ftdi->platform_data.vendor = pciVID;
+                        ftdi->platform_data.device = pciPID;
+                }
+        }
+        if (ftdi->function > 0) {
+                UxxxStatus = ftdi_elan_setup_controller(ftdi,
+                        ftdi->function - 1);
+                if (UxxxStatus)
+                        return UxxxStatus;
+                return 0;
+        } else if (controllers > 0) {
+                return -ENXIO;
+        } else if (unrecognized > 0) {
+                return -ENXIO;
+        } else {
+                ftdi->enumerated = 0;
+                return -ENXIO;
+        }
+}
+
+
+/*
+* we use only the first bulk-in and bulk-out endpoints
+*/
+static int ftdi_elan_probe(struct usb_interface *interface,
+        const struct usb_device_id *id)
+{
+        struct usb_host_interface *iface_desc;
+        struct usb_endpoint_descriptor *endpoint;
+        size_t buffer_size;
+        int i;
+        int retval = -ENOMEM;
+        struct usb_ftdi *ftdi;
+
+	ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
+	if (!ftdi) {
+                printk(KERN_ERR "Out of memory\n");
+                return -ENOMEM;
+        }
+
+        mutex_lock(&ftdi_module_lock);
+        list_add_tail(&ftdi->ftdi_list, &ftdi_static_list);
+        ftdi->sequence_num = ++ftdi_instances;
+        mutex_unlock(&ftdi_module_lock);
+        ftdi_elan_init_kref(ftdi);
+	sema_init(&ftdi->sw_lock, 1);
+        ftdi->udev = usb_get_dev(interface_to_usbdev(interface));
+        ftdi->interface = interface;
+        mutex_init(&ftdi->u132_lock);
+        ftdi->expected = 4;
+        iface_desc = interface->cur_altsetting;
+        for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+                endpoint = &iface_desc->endpoint[i].desc;
+                if (!ftdi->bulk_in_endpointAddr &&
+		    usb_endpoint_is_bulk_in(endpoint)) {
+                        buffer_size = usb_endpoint_maxp(endpoint);
+                        ftdi->bulk_in_size = buffer_size;
+                        ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress;
+                        ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
+                        if (!ftdi->bulk_in_buffer) {
+                                dev_err(&ftdi->udev->dev, "Could not allocate b"
+                                        "ulk_in_buffer\n");
+                                retval = -ENOMEM;
+                                goto error;
+                        }
+                }
+                if (!ftdi->bulk_out_endpointAddr &&
+		    usb_endpoint_is_bulk_out(endpoint)) {
+                        ftdi->bulk_out_endpointAddr =
+                                endpoint->bEndpointAddress;
+                }
+        }
+        if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) {
+                dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk"
+                        "-out endpoints\n");
+                retval = -ENODEV;
+                goto error;
+        }
+        dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n",
+                iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr,
+                ftdi->bulk_out_endpointAddr);
+        usb_set_intfdata(interface, ftdi);
+        if (iface_desc->desc.bInterfaceNumber == 0 &&
+                ftdi->bulk_in_endpointAddr == 0x81 &&
+                ftdi->bulk_out_endpointAddr == 0x02) {
+                retval = usb_register_dev(interface, &ftdi_elan_jtag_class);
+                if (retval) {
+                        dev_err(&ftdi->udev->dev, "Not able to get a minor for "
+                                "this device.\n");
+                        usb_set_intfdata(interface, NULL);
+                        retval = -ENOMEM;
+                        goto error;
+                } else {
+                        ftdi->class = &ftdi_elan_jtag_class;
+                        dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface "
+                                "%d now attached to ftdi%d\n", ftdi,
+                                iface_desc->desc.bInterfaceNumber,
+                                interface->minor);
+                        return 0;
+                }
+        } else if (iface_desc->desc.bInterfaceNumber == 1 &&
+                ftdi->bulk_in_endpointAddr == 0x83 &&
+                ftdi->bulk_out_endpointAddr == 0x04) {
+                ftdi->class = NULL;
+                dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now a"
+                        "ctivated\n", ftdi, iface_desc->desc.bInterfaceNumber);
+                INIT_DELAYED_WORK(&ftdi->status_work, ftdi_elan_status_work);
+                INIT_DELAYED_WORK(&ftdi->command_work, ftdi_elan_command_work);
+                INIT_DELAYED_WORK(&ftdi->respond_work, ftdi_elan_respond_work);
+                ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000));
+                return 0;
+        } else {
+                dev_err(&ftdi->udev->dev,
+                        "Could not find ELAN's U132 device\n");
+                retval = -ENODEV;
+                goto error;
+        }
+      error:if (ftdi) {
+                ftdi_elan_put_kref(ftdi);
+        }
+        return retval;
+}
+
+static void ftdi_elan_disconnect(struct usb_interface *interface)
+{
+        struct usb_ftdi *ftdi = usb_get_intfdata(interface);
+        ftdi->disconnected += 1;
+        if (ftdi->class) {
+                int minor = interface->minor;
+                struct usb_class_driver *class = ftdi->class;
+                usb_set_intfdata(interface, NULL);
+                usb_deregister_dev(interface, class);
+                dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on min"
+                        "or %d now disconnected\n", minor);
+        } else {
+                ftdi_status_cancel_work(ftdi);
+                ftdi_command_cancel_work(ftdi);
+                ftdi_response_cancel_work(ftdi);
+                ftdi_elan_abandon_completions(ftdi);
+                ftdi_elan_abandon_targets(ftdi);
+                if (ftdi->registered) {
+                        platform_device_unregister(&ftdi->platform_dev);
+                        ftdi->synchronized = 0;
+                        ftdi->enumerated = 0;
+                        ftdi->initialized = 0;
+                        ftdi->registered = 0;
+                }
+                flush_workqueue(status_queue);
+                flush_workqueue(command_queue);
+                flush_workqueue(respond_queue);
+                ftdi->disconnected += 1;
+                usb_set_intfdata(interface, NULL);
+                dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller inter"
+                        "face now disconnected\n");
+        }
+        ftdi_elan_put_kref(ftdi);
+}
+
+static struct usb_driver ftdi_elan_driver = {
+        .name = "ftdi-elan",
+        .probe = ftdi_elan_probe,
+        .disconnect = ftdi_elan_disconnect,
+        .id_table = ftdi_elan_table,
+};
+static int __init ftdi_elan_init(void)
+{
+        int result;
+        printk(KERN_INFO "driver %s\n", ftdi_elan_driver.name);
+        mutex_init(&ftdi_module_lock);
+        INIT_LIST_HEAD(&ftdi_static_list);
+        status_queue = create_singlethread_workqueue("ftdi-status-control");
+	if (!status_queue)
+		goto err_status_queue;
+        command_queue = create_singlethread_workqueue("ftdi-command-engine");
+	if (!command_queue)
+		goto err_command_queue;
+        respond_queue = create_singlethread_workqueue("ftdi-respond-engine");
+	if (!respond_queue)
+		goto err_respond_queue;
+        result = usb_register(&ftdi_elan_driver);
+        if (result) {
+		destroy_workqueue(status_queue);
+		destroy_workqueue(command_queue);
+		destroy_workqueue(respond_queue);
+                printk(KERN_ERR "usb_register failed. Error number %d\n",
+		       result);
+	}
+        return result;
+
+ err_respond_queue:
+	destroy_workqueue(command_queue);
+ err_command_queue:
+	destroy_workqueue(status_queue);
+ err_status_queue:
+	printk(KERN_ERR "%s couldn't create workqueue\n", ftdi_elan_driver.name);
+	return -ENOMEM;
+}
+
+static void __exit ftdi_elan_exit(void)
+{
+        struct usb_ftdi *ftdi;
+        struct usb_ftdi *temp;
+        usb_deregister(&ftdi_elan_driver);
+        printk(KERN_INFO "ftdi_u132 driver deregistered\n");
+        list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) {
+                ftdi_status_cancel_work(ftdi);
+                ftdi_command_cancel_work(ftdi);
+                ftdi_response_cancel_work(ftdi);
+        } flush_workqueue(status_queue);
+        destroy_workqueue(status_queue);
+        status_queue = NULL;
+        flush_workqueue(command_queue);
+        destroy_workqueue(command_queue);
+        command_queue = NULL;
+        flush_workqueue(respond_queue);
+        destroy_workqueue(respond_queue);
+        respond_queue = NULL;
+}
+
+
+module_init(ftdi_elan_init);
+module_exit(ftdi_elan_exit);