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->parent, 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(hcd->regs + RZV2M_USB3_INTEN); 35 int_en |= RZV2M_USB3_INT_ENA_VAL; 36 writel(int_en, hcd->regs + RZV2M_USB3_INTEN); 37 } 38 } 39