1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2015 Marvell International Ltd. 4 * 5 * MVEBU USB HOST xHCI Controller 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <fdtdec.h> 11 #include <usb.h> 12 #include <power/regulator.h> 13 #include <asm/gpio.h> 14 15 #include "xhci.h" 16 17 struct mvebu_xhci_platdata { 18 fdt_addr_t hcd_base; 19 }; 20 21 /** 22 * Contains pointers to register base addresses 23 * for the usb controller. 24 */ 25 struct mvebu_xhci { 26 struct xhci_ctrl ctrl; /* Needs to come first in this struct! */ 27 struct usb_platdata usb_plat; 28 struct xhci_hccr *hcd; 29 }; 30 31 /* 32 * Dummy implementation that can be overwritten by a board 33 * specific function 34 */ 35 __weak int board_xhci_enable(fdt_addr_t base) 36 { 37 return 0; 38 } 39 40 static int xhci_usb_probe(struct udevice *dev) 41 { 42 struct mvebu_xhci_platdata *plat = dev_get_platdata(dev); 43 struct mvebu_xhci *ctx = dev_get_priv(dev); 44 struct xhci_hcor *hcor; 45 int len, ret; 46 struct udevice *regulator; 47 48 ctx->hcd = (struct xhci_hccr *)plat->hcd_base; 49 len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase)); 50 hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len); 51 52 ret = device_get_supply_regulator(dev, "vbus-supply", ®ulator); 53 if (!ret) { 54 ret = regulator_set_enable(regulator, true); 55 if (ret) { 56 printf("Failed to turn ON the VBUS regulator\n"); 57 return ret; 58 } 59 } 60 61 /* Enable USB xHCI (VBUS, reset etc) in board specific code */ 62 board_xhci_enable(devfdt_get_addr_index(dev, 1)); 63 64 return xhci_register(dev, ctx->hcd, hcor); 65 } 66 67 static int xhci_usb_ofdata_to_platdata(struct udevice *dev) 68 { 69 struct mvebu_xhci_platdata *plat = dev_get_platdata(dev); 70 71 /* 72 * Get the base address for XHCI controller from the device node 73 */ 74 plat->hcd_base = devfdt_get_addr(dev); 75 if (plat->hcd_base == FDT_ADDR_T_NONE) { 76 debug("Can't get the XHCI register base address\n"); 77 return -ENXIO; 78 } 79 80 return 0; 81 } 82 83 static const struct udevice_id xhci_usb_ids[] = { 84 { .compatible = "marvell,armada3700-xhci" }, 85 { .compatible = "marvell,armada-380-xhci" }, 86 { .compatible = "marvell,armada-8k-xhci" }, 87 { } 88 }; 89 90 U_BOOT_DRIVER(usb_xhci) = { 91 .name = "xhci_mvebu", 92 .id = UCLASS_USB, 93 .of_match = xhci_usb_ids, 94 .ofdata_to_platdata = xhci_usb_ofdata_to_platdata, 95 .probe = xhci_usb_probe, 96 .remove = xhci_deregister, 97 .ops = &xhci_usb_ops, 98 .platdata_auto_alloc_size = sizeof(struct mvebu_xhci_platdata), 99 .priv_auto_alloc_size = sizeof(struct mvebu_xhci), 100 .flags = DM_FLAG_ALLOC_PRIV_DMA, 101 }; 102