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81 lines
2.9 KiB
Diff
81 lines
2.9 KiB
Diff
From 10d7c018269928db8487057c4c143dbd014d2262 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Tue, 21 Jan 2014 16:05:47 +0100
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Subject: [PATCH] ohci-platform: Add support for controllers with big-endian
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regs / descriptors
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Note this commit uses the same devicetree booleans for this as the ones
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already existing in the usb-ehci bindings, see:
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Documentation/devicetree/bindings/usb/usb-ehci.txt
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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Documentation/devicetree/bindings/usb/usb-ohci.txt | 3 +++
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drivers/usb/host/ohci-platform.c | 27 ++++++++++++++++++++++
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2 files changed, 30 insertions(+)
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diff --git a/Documentation/devicetree/bindings/usb/usb-ohci.txt b/Documentation/devicetree/bindings/usb/usb-ohci.txt
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index 6ba38d9..6933b0c 100644
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--- a/Documentation/devicetree/bindings/usb/usb-ohci.txt
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+++ b/Documentation/devicetree/bindings/usb/usb-ohci.txt
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@@ -6,6 +6,9 @@ Required properties:
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- interrupts : ohci controller interrupt
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Optional properties:
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+- big-endian-regs : boolean, set this for hcds with big-endian registers
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+- big-endian-desc : boolean, set this for hcds with big-endian descriptors
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+- big-endian : boolean, for hcds with big-endian-regs + big-endian-desc
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- clocks : a list of phandle + clock specifier pairs
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- phys : phandle + phy specifier pair
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- phy-names : "usb"
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diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
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index 49304dd..e2c28fd 100644
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--- a/drivers/usb/host/ohci-platform.c
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+++ b/drivers/usb/host/ohci-platform.c
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@@ -128,6 +128,7 @@ static int ohci_platform_probe(struct platform_device *dev)
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struct resource *res_mem;
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struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
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struct ohci_platform_priv *priv;
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+ struct ohci_hcd *ohci;
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int err, irq, clk = 0;
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if (usb_disabled())
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@@ -164,8 +165,34 @@ static int ohci_platform_probe(struct platform_device *dev)
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platform_set_drvdata(dev, hcd);
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dev->dev.platform_data = pdata;
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priv = hcd_to_ohci_priv(hcd);
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+ ohci = hcd_to_ohci(hcd);
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if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
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+ if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
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+ ohci->flags |= OHCI_QUIRK_BE_MMIO;
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+
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+ if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
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+ ohci->flags |= OHCI_QUIRK_BE_DESC;
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+
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+ if (of_property_read_bool(dev->dev.of_node, "big-endian"))
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+ ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
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+
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+#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
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+ if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
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+ dev_err(&dev->dev,
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+ "Error big-endian-regs not compiled in\n");
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+ err = -EINVAL;
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+ goto err_put_hcd;
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+ }
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+#endif
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+#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
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+ if (ohci->flags & OHCI_QUIRK_BE_DESC) {
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+ dev_err(&dev->dev,
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+ "Error big-endian-desc not compiled in\n");
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+ err = -EINVAL;
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+ goto err_put_hcd;
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+ }
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+#endif
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priv->phy = devm_phy_get(&dev->dev, "usb");
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if (IS_ERR(priv->phy)) {
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err = PTR_ERR(priv->phy);
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--
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1.8.5.5
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