1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-rzv2m.c b/drivers/usb/host/xhci-rzv2m.c
new file mode 100644
index 000000000000..ec65b24eafa8
--- /dev/null
+++ b/drivers/usb/host/xhci-rzv2m.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * xHCI host controller driver for RZ/V2M
+ *
+ * Copyright (C) 2022 Renesas Electronics Corporation
+ */
+
+#include <linux/usb/rzv2m_usb3drd.h>
+#include "xhci-plat.h"
+#include "xhci-rzv2m.h"
+
+#define RZV2M_USB3_INTEN	0x1044	/* Interrupt Enable */
+
+#define RZV2M_USB3_INT_XHC_ENA	BIT(0)
+#define RZV2M_USB3_INT_HSE_ENA	BIT(2)
+#define RZV2M_USB3_INT_ENA_VAL	(RZV2M_USB3_INT_XHC_ENA \
+				 | RZV2M_USB3_INT_HSE_ENA)
+
+int xhci_rzv2m_init_quirk(struct usb_hcd *hcd)
+{
+	struct device *dev = hcd->self.controller;
+
+	rzv2m_usb3drd_reset(dev->parent, true);
+
+	return 0;
+}
+
+void xhci_rzv2m_start(struct usb_hcd *hcd)
+{
+	u32 int_en;
+
+	if (hcd->regs) {
+		/* Interrupt Enable */
+		int_en = readl(hcd->regs + RZV2M_USB3_INTEN);
+		int_en |= RZV2M_USB3_INT_ENA_VAL;
+		writel(int_en, hcd->regs + RZV2M_USB3_INTEN);
+	}
+}