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From 57b5e74a0d7ba5dbf77ee05a2693635faba5fe30 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Tue, 21 Jan 2014 16:20:53 +0100
Subject: [PATCH] ehci-platform: Add support for controllers with big-endian
regs / descriptors
This uses the already documented devicetree booleans for this, see:
Documentation/devicetree/bindings/usb/usb-ehci.txt
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/usb/host/ehci-platform.c | 33 +++++++++++++++++++++++++++++++--
1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 5ebd0b7..8fde649 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -55,8 +55,10 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
hcd->has_tt = pdata->has_tt;
ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
- ehci->big_endian_desc = pdata->big_endian_desc;
- ehci->big_endian_mmio = pdata->big_endian_mmio;
+ if (pdata->big_endian_desc)
+ ehci->big_endian_desc = 1;
+ if (pdata->big_endian_mmio)
+ ehci->big_endian_mmio = 1;
ehci->ignore_oc = pdata->ignore_oc;
if (pdata->pre_setup) {
@@ -142,6 +144,7 @@ static int ehci_platform_probe(struct platform_device *dev)
struct resource *res_mem;
struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
struct ehci_platform_priv *priv;
+ struct ehci_hcd *ehci;
int err, irq, clk = 0;
if (usb_disabled())
@@ -177,8 +180,34 @@ static int ehci_platform_probe(struct platform_device *dev)
platform_set_drvdata(dev, hcd);
dev->dev.platform_data = pdata;
priv = hcd_to_ehci_priv(hcd);
+ ehci = hcd_to_ehci(hcd);
if (pdata == &ehci_platform_defaults && dev->dev.of_node) {
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
+ ehci->big_endian_mmio = 1;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
+ ehci->big_endian_desc = 1;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian"))
+ ehci->big_endian_mmio = ehci->big_endian_desc = 1;
+
+#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
+ if (ehci->big_endian_mmio) {
+ dev_err(&dev->dev,
+ "Error big-endian-regs not compiled in\n");
+ err = -EINVAL;
+ goto err_put_hcd;
+ }
+#endif
+#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_DESC
+ if (ehci->big_endian_desc) {
+ dev_err(&dev->dev,
+ "Error big-endian-desc not compiled in\n");
+ err = -EINVAL;
+ goto err_put_hcd;
+ }
+#endif
priv->phy = devm_phy_get(&dev->dev, "usb");
if (IS_ERR(priv->phy)) {
err = PTR_ERR(priv->phy);
--
1.8.5.5
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