diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-02-07 19:36:43 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-08 02:24:24 +0400 |
| commit | ad3db5dabad169bfffcd36b94a2f65ae88a3405a (patch) | |
| tree | df93cd1427e3e3caeab5493fbcbb7e208ae3dcb8 /drivers/usb/host/ehci-platform.c | |
| parent | b1034412570f38d32b88dfd5da5cb2f86b5c321c (diff) | |
| download | linux-ad3db5dabad169bfffcd36b94a2f65ae88a3405a.tar.xz | |
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-platform.c')
| -rw-r--r-- | drivers/usb/host/ehci-platform.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index 5ebd0b75b58e..8fde6490234f 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; if (pdata->pre_setup) { retval = pdata->pre_setup(hcd); @@ -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); |