target/linux/brcm47xx/patches-2.6.34/021-USB-Add-USB-2.0-to-ssb-ohci-driver.patch

   1 From ca00adabb88dd1194891624836d7574aab2d7c05 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 18 Jul 2010 21:25:03 +0200
   4 Subject: [PATCH 1/2] USB: Add USB 2.0 to ssb ohci driver
   5
   6 This adds USB 2.0 support to ssb ohci driver.
   7 This patch was used in OpenWRT for a long time now.
   8
   9 CC: Steve Brown <sbrown@cortland.com>
  10 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  11 ---
  12  drivers/usb/host/ohci-ssb.c |   52 ++++++++++++++++++++++++++++++++++++++++--
  13  1 files changed, 49 insertions(+), 3 deletions(-)
  14
  15 --- a/drivers/usb/host/ohci-ssb.c
  16 +++ b/drivers/usb/host/ohci-ssb.c
  17 @@ -93,8 +93,11 @@ static void ssb_ohci_detach(struct ssb_d
  18  {
  19         struct usb_hcd *hcd = ssb_get_drvdata(dev);
  20
  21 +       if (hcd->driver->shutdown)
  22 +               hcd->driver->shutdown(hcd);
  23         usb_remove_hcd(hcd);
  24         iounmap(hcd->regs);
  25 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
  26         usb_put_hcd(hcd);
  27         ssb_device_disable(dev, 0);
  28  }
  29 @@ -106,10 +109,52 @@ static int ssb_ohci_attach(struct ssb_de
  30         int err = -ENOMEM;
  31         u32 tmp, flags = 0;
  32
  33 -       if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
  34 -               flags |= SSB_OHCI_TMSLOW_HOSTMODE;
  35 +       if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
  36 +           dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
  37 +               return -EOPNOTSUPP;
  38
  39 -       ssb_device_enable(dev, flags);
  40 +       if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
  41 +               /* Put the device into host-mode. */
  42 +               flags |= SSB_OHCI_TMSLOW_HOSTMODE;
  43 +               ssb_device_enable(dev, flags);
  44 +       } else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
  45 +               /*
  46 +                * USB 2.0 special considerations:
  47 +                *
  48 +                * In addition to the standard SSB reset sequence, the Host
  49 +                * Control Register must be programmed to bring the USB core
  50 +                * and various phy components out of reset.
  51 +                */
  52 +               ssb_device_enable(dev, 0);
  53 +               ssb_write32(dev, 0x200, 0x7ff);
  54 +
  55 +               /* Change Flush control reg */
  56 +               tmp = ssb_read32(dev, 0x400);
  57 +               tmp &= ~8;
  58 +               ssb_write32(dev, 0x400, tmp);
  59 +               tmp = ssb_read32(dev, 0x400);
  60 +
  61 +               /* Change Shim control reg */
  62 +               tmp = ssb_read32(dev, 0x304);
  63 +               tmp &= ~0x100;
  64 +               ssb_write32(dev, 0x304, tmp);
  65 +               tmp = ssb_read32(dev, 0x304);
  66 +
  67 +               udelay(1);
  68 +
  69 +               /* Work around for 5354 failures */
  70 +               if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
  71 +                       /* Change syn01 reg */
  72 +                       tmp = 0x00fe00fe;
  73 +                       ssb_write32(dev, 0x894, tmp);
  74 +
  75 +                       /* Change syn03 reg */
  76 +                       tmp = ssb_read32(dev, 0x89c);
  77 +                       tmp |= 0x1;
  78 +                       ssb_write32(dev, 0x89c, tmp);
  79 +               }
  80 +       } else
  81 +               ssb_device_enable(dev, 0);
  82
  83         hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
  84                         dev_name(dev->dev));
  85 @@ -200,6 +245,7 @@ static int ssb_ohci_resume(struct ssb_de
  86  static const struct ssb_device_id ssb_ohci_table[] = {
  87         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
  88         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
  89 +       SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
  90         SSB_DEVTABLE_END
  91  };
  92  MODULE_DEVICE_TABLE(ssb, ssb_ohci_table);