src/northbridge/via/cx700/usb.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2007-2009 coresystems GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <console/console.h>
  17 #include <device/device.h>
  18 #include <device/pci.h>
  19 #include <device/pci_ids.h>
  20
  21 static void usb_init(struct device *dev)
  22 {
  23         u32 reg32;
  24         u8 reg8;
  25
  26         /* USB Specification says the device must be Bus Master */
  27         printk(BIOS_DEBUG, "UHCI: Setting up controller.. ");
  28
  29         reg32 = pci_read_config32(dev, PCI_COMMAND);
  30         pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER);
  31
  32         reg8 = pci_read_config8(dev, 0xca);
  33         reg8 |= (1 << 0);
  34         pci_write_config8(dev, 0xca, reg8);
  35
  36         printk(BIOS_DEBUG, "done.\n");
  37 }
  38
  39 static struct device_operations usb_ops = {
  40         .read_resources   = pci_dev_read_resources,
  41         .set_resources    = pci_dev_set_resources,
  42         .enable_resources = pci_dev_enable_resources,
  43         .init             = usb_init,
  44         .enable           = 0,
  45         .ops_pci          = 0,
  46 };
  47
  48 static const struct pci_driver via_usb_driver __pci_driver = {
  49         .ops    = &usb_ops,
  50         .vendor = PCI_VENDOR_ID_VIA,
  51         .device = 0x3038,
  52 };