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 20 int 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 29 void 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 } 40