usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir

The XHCI controller is required to enter D3hot rather than D3cold for AMD
s2idle on this hardware generation.

Otherwise, the 'Controller Not Ready' (CNR) bit is not being cleared by
host in resume and eventually this results in xhci resume failures during
the s2idle wakeup.

Link: https://lore.kernel.org/linux-usb/1612527609-7053-1-git-send-email-Prike.Liang@amd.com/
Suggested-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Cc: stable <stable@vger.kernel.org> # 5.11+
Link: https://lore.kernel.org/r/20210527154534.8900-1-mario.limonciello@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 7bc18cf..18c2bbd 100644 (file)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -59,6 +59,7 @@
 #define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI           0x1138
 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI            0x461e
 
+#define PCI_DEVICE_ID_AMD_RENOIR_XHCI                  0x1639
 #define PCI_DEVICE_ID_AMD_PROMONTORYA_4                        0x43b9
 #define PCI_DEVICE_ID_AMD_PROMONTORYA_3                        0x43ba
 #define PCI_DEVICE_ID_AMD_PROMONTORYA_2                        0x43bb
@@ -182,6 +183,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
                (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
                xhci->quirks |= XHCI_U2_DISABLE_WAKE;
 
+       if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+               pdev->device == PCI_DEVICE_ID_AMD_RENOIR_XHCI)
+               xhci->quirks |= XHCI_BROKEN_D3COLD;
+
        if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
                xhci->quirks |= XHCI_LPM_SUPPORT;
                xhci->quirks |= XHCI_INTEL_HOST;
@@ -539,7 +544,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
         * Systems with the TI redriver that loses port status change events
         * need to have the registers polled during D3, so avoid D3cold.
         */
-       if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
+       if (xhci->quirks & (XHCI_COMP_MODE_QUIRK | XHCI_BROKEN_D3COLD))
                pci_d3cold_disable(pdev);
 
        if (xhci->quirks & XHCI_PME_STUCK_QUIRK)

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 2595a8f..e417f5c 100644 (file)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1892,6 +1892,7 @@ struct xhci_hcd {
 #define XHCI_DISABLE_SPARSE    BIT_ULL(38)
 #define XHCI_SG_TRB_CACHE_SIZE_QUIRK   BIT_ULL(39)
 #define XHCI_NO_SOFT_RETRY     BIT_ULL(40)
+#define XHCI_BROKEN_D3COLD     BIT_ULL(41)
 
        unsigned int            num_active_eps;
        unsigned int            limit_active_eps;