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 */
board_xhci_enable(fdt_addr_t base)35 __weak int board_xhci_enable(fdt_addr_t base)
36 {
37 return 0;
38 }
39
xhci_usb_probe(struct udevice * dev)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
xhci_usb_ofdata_to_platdata(struct udevice * dev)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