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authorSandeep Singh <sandeep.singh@amd.com>2017-08-04 16:35:56 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-10 11:50:53 -0700
commite788787ef4f9c24aafefc480a8da5f92b914e5e6 (patch)
tree478a00444d1f01f7e0b669db35a0293dfca10293
parent8cc34c8d6113bef00a3a6d59ee101145cc350d61 (diff)
usb:xhci:Add quirk for Certain failing HP keyboard on reset after resume
Certain HP keyboards would keep inputting a character automatically which is the wake-up key after S3 resume On some AMD platforms USB host fails to respond (by holding resume-K) to USB device (an HP keyboard) resume request within 1ms (TURSM) and ensures that resume is signaled for at least 20 ms (TDRSMDN), which is defined in USB 2.0 spec. The result is that the keyboard is out of function. In SNPS USB design, the host responds to the resume request only after system gets back to S0 and the host gets to functional after the internal HW restore operation that is more than 1 second after the initial resume request from the USB device. As a workaround for specific keyboard ID(HP Keyboards), applying port reset after resume when the keyboard is plugged in. Signed-off-by: Sandeep Singh <Sandeep.Singh@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> cc: Nehal Shah <Nehal-bakulchandra.Shah@amd.com> Reviewed-by: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/core/quirks.c1
-rw-r--r--drivers/usb/host/pci-quirks.c17
2 files changed, 13 insertions, 5 deletions
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 3116edfcdc18..2e9cde0b25d7 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -249,6 +249,7 @@ static const struct usb_device_id usb_amd_resume_quirk_list[] = {
{ USB_DEVICE(0x093a, 0x2500), .driver_info = USB_QUIRK_RESET_RESUME },
{ USB_DEVICE(0x093a, 0x2510), .driver_info = USB_QUIRK_RESET_RESUME },
{ USB_DEVICE(0x093a, 0x2521), .driver_info = USB_QUIRK_RESET_RESUME },
+ { USB_DEVICE(0x03f0, 0x2b4a), .driver_info = USB_QUIRK_RESET_RESUME },
/* Logitech Optical Mouse M90/M100 */
{ USB_DEVICE(0x046d, 0xc05a), .driver_info = USB_QUIRK_RESET_RESUME },
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index c8989c62a262..5f4ca7890435 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -98,6 +98,7 @@ enum amd_chipset_gen {
AMD_CHIPSET_HUDSON2,
AMD_CHIPSET_BOLTON,
AMD_CHIPSET_YANGTZE,
+ AMD_CHIPSET_TAISHAN,
AMD_CHIPSET_UNKNOWN,
};
@@ -141,6 +142,11 @@ static int amd_chipset_sb_type_init(struct amd_chipset_info *pinfo)
pinfo->sb_type.gen = AMD_CHIPSET_SB700;
else if (rev >= 0x40 && rev <= 0x4f)
pinfo->sb_type.gen = AMD_CHIPSET_SB800;
+ }
+ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+ 0x145c, NULL);
+ if (pinfo->smbus_dev) {
+ pinfo->sb_type.gen = AMD_CHIPSET_TAISHAN;
} else {
pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
@@ -260,11 +266,12 @@ int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev)
{
/* Make sure amd chipset type has already been initialized */
usb_amd_find_chipset_info();
- if (amd_chipset.sb_type.gen != AMD_CHIPSET_YANGTZE)
- return 0;
-
- dev_dbg(&pdev->dev, "QUIRK: Enable AMD remote wakeup fix\n");
- return 1;
+ if (amd_chipset.sb_type.gen == AMD_CHIPSET_YANGTZE ||
+ amd_chipset.sb_type.gen == AMD_CHIPSET_TAISHAN) {
+ dev_dbg(&pdev->dev, "QUIRK: Enable AMD remote wakeup fix\n");
+ return 1;
+ }
+ return 0;
}
EXPORT_SYMBOL_GPL(usb_hcd_amd_remote_wakeup_quirk);