target/linux/sunxi/patches-3.13/180-3-usb-ohci-platform-support-bigendian.patch

   1 From 10d7c018269928db8487057c4c143dbd014d2262 Mon Sep 17 00:00:00 2001
   2 From: Hans de Goede <hdegoede@redhat.com>
   3 Date: Tue, 21 Jan 2014 16:05:47 +0100
   4 Subject: [PATCH] ohci-platform: Add support for controllers with big-endian
   5  regs / descriptors
   6
   7 Note this commit uses the same devicetree booleans for this as the ones
   8 already existing in the usb-ehci bindings, see:
   9 Documentation/devicetree/bindings/usb/usb-ehci.txt
  10
  11 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  12 ---
  13  Documentation/devicetree/bindings/usb/usb-ohci.txt |  3 +++
  14  drivers/usb/host/ohci-platform.c                   | 27 ++++++++++++++++++++++
  15  2 files changed, 30 insertions(+)
  16
  17 diff --git a/Documentation/devicetree/bindings/usb/usb-ohci.txt b/Documentation/devicetree/bindings/usb/usb-ohci.txt
  18 index 6ba38d9..6933b0c 100644
  19 --- a/Documentation/devicetree/bindings/usb/usb-ohci.txt
  20 +++ b/Documentation/devicetree/bindings/usb/usb-ohci.txt
  21 @@ -6,6 +6,9 @@ Required properties:
  22  - interrupts : ohci controller interrupt
  23
  24  Optional properties:
  25 +- big-endian-regs : boolean, set this for hcds with big-endian registers
  26 +- big-endian-desc : boolean, set this for hcds with big-endian descriptors
  27 +- big-endian : boolean, for hcds with big-endian-regs + big-endian-desc
  28  - clocks : a list of phandle + clock specifier pairs
  29  - phys : phandle + phy specifier pair
  30  - phy-names : "usb"
  31 diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
  32 index 49304dd..e2c28fd 100644
  33 --- a/drivers/usb/host/ohci-platform.c
  34 +++ b/drivers/usb/host/ohci-platform.c
  35 @@ -128,6 +128,7 @@ static int ohci_platform_probe(struct platform_device *dev)
  36         struct resource *res_mem;
  37         struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
  38         struct ohci_platform_priv *priv;
  39 +       struct ohci_hcd *ohci;
  40         int err, irq, clk = 0;
  41
  42         if (usb_disabled())
  43 @@ -164,8 +165,34 @@ static int ohci_platform_probe(struct platform_device *dev)
  44         platform_set_drvdata(dev, hcd);
  45         dev->dev.platform_data = pdata;
  46         priv = hcd_to_ohci_priv(hcd);
  47 +       ohci = hcd_to_ohci(hcd);
  48
  49         if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
  50 +               if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
  51 +                       ohci->flags |= OHCI_QUIRK_BE_MMIO;
  52 +
  53 +               if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
  54 +                       ohci->flags |= OHCI_QUIRK_BE_DESC;
  55 +
  56 +               if (of_property_read_bool(dev->dev.of_node, "big-endian"))
  57 +                       ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
  58 +
  59 +#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
  60 +               if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
  61 +                       dev_err(&dev->dev,
  62 +                               "Error big-endian-regs not compiled in\n");
  63 +                       err = -EINVAL;
  64 +                       goto err_put_hcd;
  65 +               }
  66 +#endif
  67 +#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
  68 +               if (ohci->flags & OHCI_QUIRK_BE_DESC) {
  69 +                       dev_err(&dev->dev,
  70 +                               "Error big-endian-desc not compiled in\n");
  71 +                       err = -EINVAL;
  72 +                       goto err_put_hcd;
  73 +               }
  74 +#endif
  75                 priv->phy = devm_phy_get(&dev->dev, "usb");
  76                 if (IS_ERR(priv->phy)) {
  77                         err = PTR_ERR(priv->phy);
  78 --
  79 1.8.5.5
  80