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path: root/drivers/usb/host/xhci-rzv2m.c
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Diffstat (limited to 'drivers/usb/host/xhci-rzv2m.c')
-rw-r--r--drivers/usb/host/xhci-rzv2m.c38
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);
+ }
+}