forked from Minki/linux
16e2e5f634
Roel Kluin pointed out that transfer_buffer_lengths in struct urb was declared as an 'int'. This patch changes this field to be 'u32' to prevent any potential negative conversion and comparison errors. This triggered a few compiler warning messages when these fields were being used with the min macro, so they have also been fixed up in this patch. Cc: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2947 lines
118 KiB
C
2947 lines
118 KiB
C
/*
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* USB FTDI client driver for Elan Digital Systems's Uxxx adapters
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*
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* Copyright(C) 2006 Elan Digital Systems Limited
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* http://www.elandigitalsystems.com
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*
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* Author and Maintainer - Tony Olech - Elan Digital Systems
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* tony.olech@elandigitalsystems.com
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*
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* This program is free software;you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*
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* This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
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* based on various USB client drivers in the 2.6.15 linux kernel
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* with constant reference to the 3rd Edition of Linux Device Drivers
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* published by O'Reilly
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*
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* The U132 adapter is a USB to CardBus adapter specifically designed
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* for PC cards that contain an OHCI host controller. Typical PC cards
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* are the Orange Mobile 3G Option GlobeTrotter Fusion card.
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*
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* The U132 adapter will *NOT *work with PC cards that do not contain
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* an OHCI controller. A simple way to test whether a PC card has an
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* OHCI controller as an interface is to insert the PC card directly
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* into a laptop(or desktop) with a CardBus slot and if "lspci" shows
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* a new USB controller and "lsusb -v" shows a new OHCI Host Controller
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* then there is a good chance that the U132 adapter will support the
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* PC card.(you also need the specific client driver for the PC card)
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*
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* Please inform the Author and Maintainer about any PC cards that
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* contain OHCI Host Controller and work when directly connected to
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* an embedded CardBus slot but do not work when they are connected
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* via an ELAN U132 adapter.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/ioctl.h>
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#include <linux/pci_ids.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kref.h>
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#include <linux/mutex.h>
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#include <asm/uaccess.h>
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#include <linux/usb.h>
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#include <linux/workqueue.h>
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#include <linux/platform_device.h>
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MODULE_AUTHOR("Tony Olech");
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MODULE_DESCRIPTION("FTDI ELAN driver");
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MODULE_LICENSE("GPL");
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#define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
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static int distrust_firmware = 1;
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module_param(distrust_firmware, bool, 0);
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MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren"
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"t setup");
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extern struct platform_driver u132_platform_driver;
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static struct workqueue_struct *status_queue;
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static struct workqueue_struct *command_queue;
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static struct workqueue_struct *respond_queue;
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/*
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* ftdi_module_lock exists to protect access to global variables
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*
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*/
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static struct mutex ftdi_module_lock;
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static int ftdi_instances = 0;
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static struct list_head ftdi_static_list;
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/*
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* end of the global variables protected by ftdi_module_lock
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*/
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#include "usb_u132.h"
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#include <asm/io.h>
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#include "../core/hcd.h"
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/* FIXME ohci.h is ONLY for internal use by the OHCI driver.
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* If you're going to try stuff like this, you need to split
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* out shareable stuff (register declarations?) into its own
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* file, maybe name <linux/usb/ohci.h>
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*/
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#include "../host/ohci.h"
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/* Define these values to match your devices*/
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#define USB_FTDI_ELAN_VENDOR_ID 0x0403
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#define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea
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/* table of devices that work with this driver*/
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static struct usb_device_id ftdi_elan_table[] = {
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{USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)},
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{ /* Terminating entry */ }
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};
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MODULE_DEVICE_TABLE(usb, ftdi_elan_table);
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/* only the jtag(firmware upgrade device) interface requires
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* a device file and corresponding minor number, but the
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* interface is created unconditionally - I suppose it could
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* be configured or not according to a module parameter.
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* But since we(now) require one interface per device,
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* and since it unlikely that a normal installation would
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* require more than a couple of elan-ftdi devices, 8 seems
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* like a reasonable limit to have here, and if someone
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* really requires more than 8 devices, then they can frig the
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* code and recompile
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*/
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#define USB_FTDI_ELAN_MINOR_BASE 192
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#define COMMAND_BITS 5
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#define COMMAND_SIZE (1<<COMMAND_BITS)
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#define COMMAND_MASK (COMMAND_SIZE-1)
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struct u132_command {
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u8 header;
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u16 length;
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u8 address;
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u8 width;
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u32 value;
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int follows;
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void *buffer;
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};
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#define RESPOND_BITS 5
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#define RESPOND_SIZE (1<<RESPOND_BITS)
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#define RESPOND_MASK (RESPOND_SIZE-1)
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struct u132_respond {
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u8 header;
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u8 address;
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u32 *value;
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int *result;
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struct completion wait_completion;
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};
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struct u132_target {
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void *endp;
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struct urb *urb;
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int toggle_bits;
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int error_count;
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int condition_code;
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int repeat_number;
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int halted;
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int skipped;
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int actual;
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int non_null;
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int active;
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int abandoning;
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void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
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int toggle_bits, int error_count, int condition_code,
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int repeat_number, int halted, int skipped, int actual,
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int non_null);
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};
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/* Structure to hold all of our device specific stuff*/
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struct usb_ftdi {
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struct list_head ftdi_list;
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struct mutex u132_lock;
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int command_next;
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int command_head;
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struct u132_command command[COMMAND_SIZE];
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int respond_next;
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int respond_head;
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struct u132_respond respond[RESPOND_SIZE];
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struct u132_target target[4];
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char device_name[16];
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unsigned synchronized:1;
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unsigned enumerated:1;
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unsigned registered:1;
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unsigned initialized:1;
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unsigned card_ejected:1;
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int function;
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int sequence_num;
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int disconnected;
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int gone_away;
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int stuck_status;
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int status_queue_delay;
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struct semaphore sw_lock;
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struct usb_device *udev;
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struct usb_interface *interface;
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struct usb_class_driver *class;
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struct delayed_work status_work;
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struct delayed_work command_work;
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struct delayed_work respond_work;
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struct u132_platform_data platform_data;
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struct resource resources[0];
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struct platform_device platform_dev;
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unsigned char *bulk_in_buffer;
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size_t bulk_in_size;
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size_t bulk_in_last;
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size_t bulk_in_left;
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__u8 bulk_in_endpointAddr;
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__u8 bulk_out_endpointAddr;
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struct kref kref;
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u32 controlreg;
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u8 response[4 + 1024];
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int expected;
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int recieved;
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int ed_found;
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};
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#define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref)
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#define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \
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platform_dev)
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static struct usb_driver ftdi_elan_driver;
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static void ftdi_elan_delete(struct kref *kref)
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{
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struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref);
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dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi);
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usb_put_dev(ftdi->udev);
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ftdi->disconnected += 1;
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mutex_lock(&ftdi_module_lock);
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list_del_init(&ftdi->ftdi_list);
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ftdi_instances -= 1;
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mutex_unlock(&ftdi_module_lock);
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kfree(ftdi->bulk_in_buffer);
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ftdi->bulk_in_buffer = NULL;
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}
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static void ftdi_elan_put_kref(struct usb_ftdi *ftdi)
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{
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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static void ftdi_elan_get_kref(struct usb_ftdi *ftdi)
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{
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kref_get(&ftdi->kref);
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}
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static void ftdi_elan_init_kref(struct usb_ftdi *ftdi)
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{
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kref_init(&ftdi->kref);
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}
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static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
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{
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if (!queue_delayed_work(status_queue, &ftdi->status_work, delta))
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
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{
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if (queue_delayed_work(status_queue, &ftdi->status_work, delta))
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kref_get(&ftdi->kref);
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}
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static void ftdi_status_cancel_work(struct usb_ftdi *ftdi)
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{
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if (cancel_delayed_work(&ftdi->status_work))
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
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{
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if (!queue_delayed_work(command_queue, &ftdi->command_work, delta))
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
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{
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if (queue_delayed_work(command_queue, &ftdi->command_work, delta))
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kref_get(&ftdi->kref);
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}
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static void ftdi_command_cancel_work(struct usb_ftdi *ftdi)
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{
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if (cancel_delayed_work(&ftdi->command_work))
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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static void ftdi_response_requeue_work(struct usb_ftdi *ftdi,
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unsigned int delta)
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{
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if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
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{
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if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
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kref_get(&ftdi->kref);
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}
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static void ftdi_response_cancel_work(struct usb_ftdi *ftdi)
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{
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if (cancel_delayed_work(&ftdi->respond_work))
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kref_put(&ftdi->kref, ftdi_elan_delete);
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}
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void ftdi_elan_gone_away(struct platform_device *pdev)
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{
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struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
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ftdi->gone_away += 1;
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ftdi_elan_put_kref(ftdi);
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}
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EXPORT_SYMBOL_GPL(ftdi_elan_gone_away);
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static void ftdi_release_platform_dev(struct device *dev)
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{
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dev->parent = NULL;
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}
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static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
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struct u132_target *target, u8 *buffer, int length);
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static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi);
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static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi);
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static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi);
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static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi);
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static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi);
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static int ftdi_elan_synchronize(struct usb_ftdi *ftdi);
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static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi);
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static int ftdi_elan_command_engine(struct usb_ftdi *ftdi);
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static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi);
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static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi)
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{
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int result;
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if (ftdi->platform_dev.dev.parent)
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return -EBUSY;
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ftdi_elan_get_kref(ftdi);
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ftdi->platform_data.potpg = 100;
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ftdi->platform_data.reset = NULL;
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ftdi->platform_dev.id = ftdi->sequence_num;
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ftdi->platform_dev.resource = ftdi->resources;
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ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources);
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ftdi->platform_dev.dev.platform_data = &ftdi->platform_data;
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ftdi->platform_dev.dev.parent = NULL;
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ftdi->platform_dev.dev.release = ftdi_release_platform_dev;
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ftdi->platform_dev.dev.dma_mask = NULL;
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snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd");
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ftdi->platform_dev.name = ftdi->device_name;
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dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd");
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request_module("u132_hcd");
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dev_info(&ftdi->udev->dev, "registering '%s'\n",
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ftdi->platform_dev.name);
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result = platform_device_register(&ftdi->platform_dev);
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return result;
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}
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|
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static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi)
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{
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mutex_lock(&ftdi->u132_lock);
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while (ftdi->respond_next > ftdi->respond_head) {
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struct u132_respond *respond = &ftdi->respond[RESPOND_MASK &
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ftdi->respond_head++];
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*respond->result = -ESHUTDOWN;
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*respond->value = 0;
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complete(&respond->wait_completion);
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} mutex_unlock(&ftdi->u132_lock);
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}
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static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi)
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{
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int ed_number = 4;
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mutex_lock(&ftdi->u132_lock);
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while (ed_number-- > 0) {
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struct u132_target *target = &ftdi->target[ed_number];
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if (target->active == 1) {
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target->condition_code = TD_DEVNOTRESP;
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mutex_unlock(&ftdi->u132_lock);
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ftdi_elan_do_callback(ftdi, target, NULL, 0);
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mutex_lock(&ftdi->u132_lock);
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}
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}
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ftdi->recieved = 0;
|
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ftdi->expected = 4;
|
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ftdi->ed_found = 0;
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mutex_unlock(&ftdi->u132_lock);
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|
}
|
|
|
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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];
|
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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->recieved = 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->recieved = 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);
|
|
return;
|
|
}
|
|
|
|
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);
|
|
return;
|
|
}
|
|
|
|
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 = iminor(inode);
|
|
struct usb_interface *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 = (struct usb_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 = (struct usb_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_buffer_free(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_buffer_alloc(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_buffer_free(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->recieved = 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->recieved = 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->recieved = 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->recieved = 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->recieved = 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->recieved;
|
|
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->recieved == 0 && c == 0xFF) {
|
|
goto have;
|
|
} else
|
|
*b++ = c;
|
|
if (++ftdi->recieved < 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->recieved = 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->recieved = 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_buffer_alloc(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_buffer_free(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_buffer_alloc(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_buffer_free(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_buffer_alloc(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_buffer_free(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);
|
|
init_MUTEX(&ftdi->sw_lock);
|
|
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 = le16_to_cpu(endpoint->wMaxPacketSize);
|
|
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 built at %s on %s\n", ftdi_elan_driver.name,
|
|
__TIME__, __DATE__);
|
|
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);
|