It add a remote wakeup pci quirk for some special AMD platforms. This
quirk filters southbridge revision which is 0x39 or 0x3a.
Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
---
drivers/usb/host/pci-quirks.c | 14 +++++++++++++-
drivers/usb/host/pci-quirks.h | 1 +
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 2c76ef1..d440e73 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -140,9 +140,11 @@ int usb_amd_find_chipset_info(void)
rev = info.smbus_dev->revision;
if (rev >= 0x11 && rev <= 0x18)
info.sb_type = 2;
+ if (rev >= 0x39 && rev <= 0x3a)
+ info.sb_type = 4;
}
- if (info.sb_type == 0) {
+ if (info.sb_type == 0 || info.sb_type == 4) {
if (info.smbus_dev) {
pci_dev_put(info.smbus_dev);
info.smbus_dev = NULL;
@@ -197,6 +199,16 @@ commit:
}
EXPORT_SYMBOL_GPL(usb_amd_find_chipset_info);
+int usb_amd_remote_wakeup_quirk(void)
+{
+ if (amd_chipset.sb_type != 4)
+ return 0;
+
+ printk(KERN_DEBUG "QUIRK: Enable AMD remote wakeup fix\n");
+ return 1;
+}
+EXPORT_SYMBOL_GPL(usb_amd_remote_wakeup_quirk);
+
/*
* The hardware normally enables the A-link power management feature, which
* lets the system lower the power consumption in idle states.
diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h
index ed6700d..e28bbbe 100644
--- a/drivers/usb/host/pci-quirks.h
+++ b/drivers/usb/host/pci-quirks.h
@@ -5,6 +5,7 @@
void uhci_reset_hc(struct pci_dev *pdev, unsigned long base);
int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base);
int usb_amd_find_chipset_info(void);
+int usb_amd_remote_wakeup_quirk(void);
void usb_amd_dev_put(void);
void usb_amd_quirk_pll_disable(void);
void usb_amd_quirk_pll_enable(void);
--
1.7.11.7
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