From: Babu Moger Date: Fri, 21 Oct 2016 22:25:05 +0000 (-0700) Subject: drivers/usb: Skip auto handoff for TI and RENESAS usb controllers X-Git-Tag: v4.14-rc1~2104^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c289d0eff3d5a594c577c0dc162412a2cad075a4;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index d793f54..a9a1e4c 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);