target/linux/brcm47xx/patches-2.6.28/250-ohci-ssb-usb2.patch

   1 ---
   2  drivers/usb/host/ohci-ssb.c |   39 ++++++++++++++++++++++++++++++++++++---
   3  1 file changed, 36 insertions(+), 3 deletions(-)
   4
   5 --- a/drivers/usb/host/ohci-ssb.c
   6 +++ b/drivers/usb/host/ohci-ssb.c
   7 @@ -106,10 +106,42 @@ static int ssb_ohci_attach(struct ssb_de
   8         int err = -ENOMEM;
   9         u32 tmp, flags = 0;
  10
  11 -       if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
  12 +       if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
  13 +               /* Put the device into host-mode. */
  14                 flags |= SSB_OHCI_TMSLOW_HOSTMODE;
  15 -
  16 -       ssb_device_enable(dev, flags);
  17 +               ssb_device_enable(dev, flags);
  18 +       } else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
  19 +               /*
  20 +                * USB 2.0 special considerations:
  21 +                *
  22 +                * 1. Since the core supports both OHCI and EHCI functions, it must
  23 +                *    only be reset once.
  24 +                *
  25 +                * 2. In addition to the standard SSB reset sequence, the Host Control
  26 +                *    Register must be programmed to bring the USB core and various
  27 +                *    phy components out of reset.
  28 +                */
  29 +               ssb_device_enable(dev, 0);
  30 +               ssb_write32(dev, 0x200, 0x7ff);
  31 +               udelay(1);
  32 +               if (dev->id.revision == 1) { // bug in rev 1
  33 +
  34 +                       /* Change Flush control reg */
  35 +                       tmp = ssb_read32(dev, 0x400);
  36 +                       tmp &= ~8;
  37 +                       ssb_write32(dev, 0x400, tmp);
  38 +                       tmp = ssb_read32(dev, 0x400);
  39 +                       printk("USB20H fcr: 0x%0x\n", tmp);
  40 +
  41 +                       /* Change Shim control reg */
  42 +                       tmp = ssb_read32(dev, 0x304);
  43 +                       tmp &= ~0x100;
  44 +                       ssb_write32(dev, 0x304, tmp);
  45 +                       tmp = ssb_read32(dev, 0x304);
  46 +                       printk("USB20H shim: 0x%0x\n", tmp);
  47 +               }
  48 +       } else
  49 +               ssb_device_enable(dev, 0);
  50
  51         hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
  52                         dev_name(dev->dev));
  53 @@ -200,6 +232,7 @@ static int ssb_ohci_resume(struct ssb_de
  54  static const struct ssb_device_id ssb_ohci_table[] = {
  55         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
  56         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
  57 +       SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
  58         SSB_DEVTABLE_END
  59  };
  60  MODULE_DEVICE_TABLE(ssb, ssb_ohci_table);