+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * 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 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.
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#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 <linux/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/overcurrent setup");
-extern struct platform_driver u132_platform_driver;
-/*
- * 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;
- kfree(ftdi);
-}
-
-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 (!schedule_delayed_work(&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 (schedule_delayed_work(&ftdi->status_work, delta))
- kref_get(&ftdi->kref);
-}
-
-static void ftdi_status_cancel_work(struct usb_ftdi *ftdi)
-{
- if (cancel_delayed_work_sync(&ftdi->status_work))
- kref_put(&ftdi->kref, ftdi_elan_delete);
-}
-
-static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
-{
- if (!schedule_delayed_work(&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 (schedule_delayed_work(&ftdi->command_work, delta))
- kref_get(&ftdi->kref);
-}
-
-static void ftdi_command_cancel_work(struct usb_ftdi *ftdi)
-{
- if (cancel_delayed_work_sync(&ftdi->command_work))
- kref_put(&ftdi->kref, ftdi_elan_delete);
-}
-
-static void ftdi_response_requeue_work(struct usb_ftdi *ftdi,
- unsigned int delta)
-{
- if (!schedule_delayed_work(&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 (schedule_delayed_work(&ftdi->respond_work, delta))
- kref_get(&ftdi->kref);
-}
-
-static void ftdi_response_cancel_work(struct usb_ftdi *ftdi)
-{
- if (cancel_delayed_work_sync(&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)
-{
- 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);
-
- return platform_device_register(&ftdi->platform_dev);
-}
-
-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 confirmed platform_dev.dev.parent=%p platform_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) {
- pr_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 - 1;
- 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)
- 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 commands 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 || 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 {
- 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;
-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 packet_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 packet_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 (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) value = %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);
- 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);
- 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);
- 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 - 1;
- 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);
- 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;
- } 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);
- 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 - 1;
- 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 limit 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 FTDI = %02X\n",
- b1);
- if (retry_on_status-- > 0) {
- goto more;
- } else {
- dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n");
- return -EFAULT;
- }
- } else if (retval == -ETIMEDOUT) {
- if (retry_on_timeout-- > 0) {
- goto more;
- } else {
- dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n");
- return -ENOMEM;
- }
- } else if (retval == 0) {
- if (retry_on_empty-- > 0) {
- goto more;
- } else {
- dev_err(&ftdi->udev->dev, "empty packet retry limit 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)
- 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 sequence\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)
- 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;
- 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 - 1;
- 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, "retry 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 (read_stop-- > 0) {
- goto read;
- } else {
- dev_err(&ftdi->udev->dev, "retry 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 retry 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 {
- 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 - 1;
- 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;
- }
- 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 FTDI = %02X\n", b1);
- if (retry_on_status-- > 0) {
- msleep(5);
- goto more;
- } else {
- dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n");
- return -EFAULT;
- }
- } else if (retval == -ETIMEDOUT) {
- if (retry_on_timeout-- > 0) {
- goto more;
- } else {
- dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n");
- return -ENOMEM;
- }
- } else if (retval == 0) {
- if (retry_on_empty-- > 0) {
- goto more;
- } else {
- dev_err(&ftdi->udev->dev, "empty packet retry limit 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 device=%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 out!\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;
- return ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata);
-}
-
-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) {
- return ftdi_elan_setup_controller(ftdi, ftdi->function - 1);
- } 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 *bulk_in, *bulk_out;
- int retval;
- struct usb_ftdi *ftdi;
-
- ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
- if (!ftdi)
- 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;
- retval = usb_find_common_endpoints(iface_desc,
- &bulk_in, &bulk_out, NULL, NULL);
- if (retval) {
- dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk-out endpoints\n");
- goto error;
- }
-
- ftdi->bulk_in_size = usb_endpoint_maxp(bulk_in);
- ftdi->bulk_in_endpointAddr = bulk_in->bEndpointAddress;
- ftdi->bulk_in_buffer = kmalloc(ftdi->bulk_in_size, GFP_KERNEL);
- if (!ftdi->bulk_in_buffer) {
- retval = -ENOMEM;
- goto error;
- }
-
- ftdi->bulk_out_endpointAddr = bulk_out->bEndpointAddress;
-
- 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 activated\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 minor %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;
- }
- ftdi->disconnected += 1;
- usb_set_intfdata(interface, NULL);
- dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller interface 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;
- pr_info("driver %s\n", ftdi_elan_driver.name);
- mutex_init(&ftdi_module_lock);
- INIT_LIST_HEAD(&ftdi_static_list);
- result = usb_register(&ftdi_elan_driver);
- if (result) {
- pr_err("usb_register failed. Error number %d\n", result);
- }
- return result;
-
-}
-
-static void __exit ftdi_elan_exit(void)
-{
- struct usb_ftdi *ftdi;
- struct usb_ftdi *temp;
- usb_deregister(&ftdi_elan_driver);
- pr_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);
- }
-}
-
-
-module_init(ftdi_elan_init);
-module_exit(ftdi_elan_exit);
projects / platform / kernel / linux-rpi.git / commitdiff