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77 lines
2.5 KiB
77 lines
2.5 KiB
From 57b5e74a0d7ba5dbf77ee05a2693635faba5fe30 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 16:20:53 +0100
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Subject: [PATCH] ehci-platform: Add support for controllers with big-endian
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regs / descriptors
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This uses the already documented devicetree booleans for this, 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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drivers/usb/host/ehci-platform.c | 33 +++++++++++++++++++++++++++++++--
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1 file changed, 31 insertions(+), 2 deletions(-)
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diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
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index 5ebd0b7..8fde649 100644
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--- a/drivers/usb/host/ehci-platform.c
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+++ b/drivers/usb/host/ehci-platform.c
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@@ -55,8 +55,10 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
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hcd->has_tt = pdata->has_tt;
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ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
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- ehci->big_endian_desc = pdata->big_endian_desc;
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- ehci->big_endian_mmio = pdata->big_endian_mmio;
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+ if (pdata->big_endian_desc)
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+ ehci->big_endian_desc = 1;
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+ if (pdata->big_endian_mmio)
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+ ehci->big_endian_mmio = 1;
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ehci->ignore_oc = pdata->ignore_oc;
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if (pdata->pre_setup) {
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@@ -142,6 +144,7 @@ static int ehci_platform_probe(struct platform_device *dev)
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struct resource *res_mem;
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struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
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struct ehci_platform_priv *priv;
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+ struct ehci_hcd *ehci;
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int err, irq, clk = 0;
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if (usb_disabled())
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@@ -177,8 +180,34 @@ static int ehci_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_ehci_priv(hcd);
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+ ehci = hcd_to_ehci(hcd);
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if (pdata == &ehci_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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+ ehci->big_endian_mmio = 1;
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+
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+ if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
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+ ehci->big_endian_desc = 1;
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+
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+ if (of_property_read_bool(dev->dev.of_node, "big-endian"))
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+ ehci->big_endian_mmio = ehci->big_endian_desc = 1;
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+
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+#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
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+ if (ehci->big_endian_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_EHCI_BIG_ENDIAN_DESC
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+ if (ehci->big_endian_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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