linux-kernel - [PATCH] usb: ehci: add pci device support for Aspeed platforms

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Date:   Tue, 8 Feb 2022 14:29:27 +0800
From:   Neal Liu <neal_liu@...eedtech.com>
To:     Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pci@...r.kernel.org>
CC:     Neal Liu <neal_liu@...eedtech.com>,
        Tao Ren <rentao.bupt@...il.com>, <BMC-SW@...eedtech.com>
Subject: [PATCH] usb: ehci: add pci device support for Aspeed platforms

Enable Aspeed quirks in commit 7f2d73788d90 ("usb: ehci:
handshake CMD_RUN instead of STS_HALT") to support Aspeed
ehci-pci device.

Signed-off-by: Neal Liu <neal_liu@...eedtech.com>
---
 drivers/usb/host/ehci-pci.c | 6 ++++++
 include/linux/pci_ids.h     | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index e87cf3a00fa4..a91b25d216ae 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -222,6 +222,12 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 			ehci->has_synopsys_hc_bug = 1;
 		}
 		break;
+	case PCI_VENDOR_ID_ASPEED:
+		if (pdev->device == PCI_DEVICE_ID_ASPEED_EHCI) {
+			ehci_info(ehci, "applying Aspeed HC workaround\n");
+			ehci->is_aspeed = 1;
+		}
+		break;
 	}
 
 	/* optional debug port, normally in the first BAR */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index aad54c666407..410b395fe56c 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -3096,4 +3096,7 @@
 
 #define PCI_VENDOR_ID_NCUBE		0x10ff
 
+#define PCI_VENDOR_ID_ASPEED		0x1a03
+#define PCI_DEVICE_ID_ASPEED_EHCI	0x2603
+
 #endif /* _LINUX_PCI_IDS_H */
-- 
2.25.1