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| author | Jiahau Chang <jiahau@gmail.com> | 2017-06-19 13:08:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-20 11:18:20 +0800 |
| commit | dec08194ffeccfa1cf085906b53d301930eae18f (patch) | |
| tree | eb3c20c3186b55b1c4a2eb5e6dcae6d44e72c085 /drivers/usb/host/xhci-pci.c | |
| parent | eb7316161d889952de31b786acc40375b2c3ce15 (diff) | |
| download | linux-exynos-dec08194ffeccfa1cf085906b53d301930eae18f.tar.gz linux-exynos-dec08194ffeccfa1cf085906b53d301930eae18f.tar.bz2 linux-exynos-dec08194ffeccfa1cf085906b53d301930eae18f.zip | |
xhci: Limit USB2 port wake support for AMD Promontory hosts
For AMD Promontory xHCI host, although you can disable USB 2.0 ports in
BIOS settings, those ports will be enabled anyway after you remove a
device on that port and re-plug it in again. It's a known limitation of
the chip. As a workaround we can clear the PORT_WAKE_BITS.
This will disable wake on connect, disconnect and overcurrent on
AMD Promontory USB2 ports
[checkpatch cleanup and commit message reword -Mathias]
Cc: <stable@vger.kernel.org>
Cc: Tsai Nicholas <nicholas.tsai@amd.com>
Signed-off-by: Jiahau Chang <Lars_Chang@asmedia.com.tw>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-pci.c')
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 1bcf971141c0..0965bae95a7b 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -54,6 +54,11 @@ #define PCI_DEVICE_ID_INTEL_APL_XHCI 0x5aa8 #define PCI_DEVICE_ID_INTEL_DNV_XHCI 0x19d0 +#define PCI_DEVICE_ID_AMD_PROMONTORYA_4 0x43b9 +#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba +#define PCI_DEVICE_ID_AMD_PROMONTORYA_2 0x43bb +#define PCI_DEVICE_ID_AMD_PROMONTORYA_1 0x43bc + static const char hcd_name[] = "xhci_hcd"; static struct hc_driver __read_mostly xhci_pci_hc_driver; @@ -135,6 +140,13 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_AMD) xhci->quirks |= XHCI_TRUST_TX_LENGTH; + if ((pdev->vendor == PCI_VENDOR_ID_AMD) && + ((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) || + (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) || + (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2) || + (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1))) + xhci->quirks |= XHCI_U2_DISABLE_WAKE; + if (pdev->vendor == PCI_VENDOR_ID_INTEL) { xhci->quirks |= XHCI_LPM_SUPPORT; xhci->quirks |= XHCI_INTEL_HOST; |