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 <[email protected]> --- v2: Made changes per comments from Greg KH. Extra space removal in assignment Added both vendor and device id checks. Resending the patch. Original discussion here. https://marc.info/?t=145221162000007&r=1&w=4 drivers/usb/host/pci-quirks.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 35af362..31c9502 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -996,6 +996,14 @@ 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); -- 1.7.1
