ec65b24eafa868dafe6bafaf1c3c27b16550f31d
[releases.git] / xhci-rzv2m.c
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 }