1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * OMAP USB HOST xHCI Controller 4 * 5 * (C) Copyright 2013 6 * Texas Instruments, <www.ti.com> 7 * 8 * Author: Dan Murphy <dmurphy@ti.com> 9 */ 10 11#include <common.h> 12#include <log.h> 13#include <usb.h> 14#include <linux/errno.h> 15#include <asm/omap_common.h> 16#include <asm/arch/cpu.h> 17#include <asm/arch/sys_proto.h> 18 19#include <linux/compat.h> 20#include <linux/usb/dwc3.h> 21#include <linux/usb/xhci-omap.h> 22 23#include <usb/xhci.h> 24 25/* Declare global data pointer */ 26static struct omap_xhci omap; 27 28static int omap_xhci_core_init(struct omap_xhci *omap) 29{ 30 int ret = 0; 31 32 usb_phy_power(1); 33 omap_enable_phy(omap); 34 35 ret = dwc3_core_init(omap->dwc3_reg); 36 if (ret) { 37 debug("%s:failed to initialize core\n", __func__); 38 return ret; 39 } 40 41 /* We are hard-coding DWC3 core to Host Mode */ 42 dwc3_set_mode(omap->dwc3_reg, DWC3_GCTL_PRTCAP_HOST); 43 44 return ret; 45} 46 47static void omap_xhci_core_exit(struct omap_xhci *omap) 48{ 49 usb_phy_power(0); 50} 51 52int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor) 53{ 54 struct omap_xhci *ctx = &omap; 55 int ret = 0; 56 57 ctx->hcd = (struct xhci_hccr *)OMAP_XHCI_BASE; 58 ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET); 59 ctx->usb3_phy = (struct omap_usb3_phy *)OMAP_OCP1_SCP_BASE; 60 ctx->otg_wrapper = (struct omap_dwc_wrapper *)OMAP_OTG_WRAPPER_BASE; 61 62 ret = board_usb_init(index, USB_INIT_HOST); 63 if (ret != 0) { 64 puts("Failed to initialize board for USB\n"); 65 return ret; 66 } 67 68 ret = omap_xhci_core_init(ctx); 69 if (ret < 0) { 70 puts("Failed to initialize xhci\n"); 71 return ret; 72 } 73 74 *hccr = (struct xhci_hccr *)(OMAP_XHCI_BASE); 75 *hcor = (struct xhci_hcor *)((uint32_t) *hccr 76 + HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase))); 77 78 debug("omap-xhci: init hccr %x and hcor %x hc_length %d\n", 79 (uint32_t)*hccr, (uint32_t)*hcor, 80 (uint32_t)HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase))); 81 82 return ret; 83} 84 85void xhci_hcd_stop(int index) 86{ 87 struct omap_xhci *ctx = &omap; 88 89 omap_xhci_core_exit(ctx); 90 board_usb_cleanup(index, USB_INIT_HOST); 91} 92