1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * xHCI host controller driver for RZ/V2M
 4 *
 5 * Copyright (C) 2022 Renesas Electronics Corporation
 6 */
 7
 8#include <linux/usb/rzv2m_usb3drd.h>
 9#include "xhci.h"
10#include "xhci-plat.h"
11#include "xhci-rzv2m.h"
12
13#define RZV2M_USB3_INTEN	0x1044	/* Interrupt Enable */
14
15#define RZV2M_USB3_INT_XHC_ENA	BIT(0)
16#define RZV2M_USB3_INT_HSE_ENA	BIT(2)
17#define RZV2M_USB3_INT_ENA_VAL	(RZV2M_USB3_INT_XHC_ENA \
18				 | RZV2M_USB3_INT_HSE_ENA)
19
20int xhci_rzv2m_init_quirk(struct usb_hcd *hcd)
21{
22	struct device *dev = hcd->self.controller;
23
24	rzv2m_usb3drd_reset(dev->parent, true);
25
26	return 0;
27}
28
29void xhci_rzv2m_start(struct usb_hcd *hcd)
30{
31	u32 int_en;
32
33	if (hcd->regs) {
34		/* Interrupt Enable */
35		int_en = readl(hcd->regs + RZV2M_USB3_INTEN);
36		int_en |= RZV2M_USB3_INT_ENA_VAL;
37		writel(int_en, hcd->regs + RZV2M_USB3_INTEN);
38	}
39}