target/linux/sunxi/patches-3.13/180-4-usb-ehci-platform-support-bigendian.patch

   1 From 57b5e74a0d7ba5dbf77ee05a2693635faba5fe30 Mon Sep 17 00:00:00 2001
   2 From: Hans de Goede <hdegoede@redhat.com>
   3 Date: Tue, 21 Jan 2014 16:20:53 +0100
   4 Subject: [PATCH] ehci-platform: Add support for controllers with big-endian
   5  regs / descriptors
   6
   7 This uses the already documented devicetree booleans for this, see:
   8 Documentation/devicetree/bindings/usb/usb-ehci.txt
   9
  10 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  11 ---
  12  drivers/usb/host/ehci-platform.c | 33 +++++++++++++++++++++++++++++++--
  13  1 file changed, 31 insertions(+), 2 deletions(-)
  14
  15 diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
  16 index 5ebd0b7..8fde649 100644
  17 --- a/drivers/usb/host/ehci-platform.c
  18 +++ b/drivers/usb/host/ehci-platform.c
  19 @@ -55,8 +55,10 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
  20
  21         hcd->has_tt = pdata->has_tt;
  22         ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
  23 -       ehci->big_endian_desc = pdata->big_endian_desc;
  24 -       ehci->big_endian_mmio = pdata->big_endian_mmio;
  25 +       if (pdata->big_endian_desc)
  26 +               ehci->big_endian_desc = 1;
  27 +       if (pdata->big_endian_mmio)
  28 +               ehci->big_endian_mmio = 1;
  29         ehci->ignore_oc = pdata->ignore_oc;
  30
  31         if (pdata->pre_setup) {
  32 @@ -142,6 +144,7 @@ static int ehci_platform_probe(struct platform_device *dev)
  33         struct resource *res_mem;
  34         struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
  35         struct ehci_platform_priv *priv;
  36 +       struct ehci_hcd *ehci;
  37         int err, irq, clk = 0;
  38
  39         if (usb_disabled())
  40 @@ -177,8 +180,34 @@ static int ehci_platform_probe(struct platform_device *dev)
  41         platform_set_drvdata(dev, hcd);
  42         dev->dev.platform_data = pdata;
  43         priv = hcd_to_ehci_priv(hcd);
  44 +       ehci = hcd_to_ehci(hcd);
  45
  46         if (pdata == &ehci_platform_defaults && dev->dev.of_node) {
  47 +               if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
  48 +                       ehci->big_endian_mmio = 1;
  49 +
  50 +               if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
  51 +                       ehci->big_endian_desc = 1;
  52 +
  53 +               if (of_property_read_bool(dev->dev.of_node, "big-endian"))
  54 +                       ehci->big_endian_mmio = ehci->big_endian_desc = 1;
  55 +
  56 +#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
  57 +               if (ehci->big_endian_mmio) {
  58 +                       dev_err(&dev->dev,
  59 +                               "Error big-endian-regs not compiled in\n");
  60 +                       err = -EINVAL;
  61 +                       goto err_put_hcd;
  62 +               }
  63 +#endif
  64 +#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_DESC
  65 +               if (ehci->big_endian_desc) {
  66 +                       dev_err(&dev->dev,
  67 +                               "Error big-endian-desc not compiled in\n");
  68 +                       err = -EINVAL;
  69 +                       goto err_put_hcd;
  70 +               }
  71 +#endif
  72                 priv->phy = devm_phy_get(&dev->dev, "usb");
  73                 if (IS_ERR(priv->phy)) {
  74                         err = PTR_ERR(priv->phy);
  75 --
  76 1.8.5.5
  77