| 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-plat.h" |
| 10 | #include "xhci-rzv2m.h" |
| 11 | |
| 12 | #define RZV2M_USB3_INTEN 0x1044 /* Interrupt Enable */ |
| 13 | |
| 14 | #define RZV2M_USB3_INT_XHC_ENA BIT(0) |
| 15 | #define RZV2M_USB3_INT_HSE_ENA BIT(2) |
| 16 | #define RZV2M_USB3_INT_ENA_VAL (RZV2M_USB3_INT_XHC_ENA \ |
| 17 | | RZV2M_USB3_INT_HSE_ENA) |
| 18 | |
| 19 | int xhci_rzv2m_init_quirk(struct usb_hcd *hcd) |
| 20 | { |
| 21 | struct device *dev = hcd->self.controller; |
| 22 | |
| 23 | rzv2m_usb3drd_reset(dev: dev->parent, host: true); |
| 24 | |
| 25 | return 0; |
| 26 | } |
| 27 | |
| 28 | void xhci_rzv2m_start(struct usb_hcd *hcd) |
| 29 | { |
| 30 | u32 int_en; |
| 31 | |
| 32 | if (hcd->regs) { |
| 33 | /* Interrupt Enable */ |
| 34 | int_en = readl(addr: hcd->regs + RZV2M_USB3_INTEN); |
| 35 | int_en |= RZV2M_USB3_INT_ENA_VAL; |
| 36 | writel(val: int_en, addr: hcd->regs + RZV2M_USB3_INTEN); |
| 37 | } |
| 38 | } |
| 39 |