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authorBabu Moger <babu.moger@oracle.com>2016-10-22 01:25:05 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-07 12:12:22 +0300
commitc289d0eff3d5a594c577c0dc162412a2cad075a4 (patch)
treedb86ca95bc9a72075581b9e695a0a8f0ec85cb8a /drivers/usb
parent2e52ec2394fb9486fd496737a84d629b2c992db2 (diff)
downloadlinux-c289d0eff3d5a594c577c0dc162412a2cad075a4.tar.xz
drivers/usb: Skip auto handoff for TI and RENESAS usb controllers
Never seen XHCI auto handoff working on TI and RENESAS cards. Eventually, we force handoff. This code forces the handoff unconditionally. It saves 5 seconds boot time for each card. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/pci-quirks.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index d793f548dfe2..a9a1e4c40480 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -995,6 +995,14 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
}
val = readl(base + ext_cap_offset);
+ /* Auto handoff never worked for these devices. Force it and continue */
+ if ((pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241) ||
+ (pdev->vendor == PCI_VENDOR_ID_RENESAS
+ && pdev->device == 0x0014)) {
+ val = (val | XHCI_HC_OS_OWNED) & ~XHCI_HC_BIOS_OWNED;
+ writel(val, base + ext_cap_offset);
+ }
+
/* If the BIOS owns the HC, signal that the OS wants it, and wait */
if (val & XHCI_HC_BIOS_OWNED) {
writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset);