blob: 4444988e36fcace0566c8d99529cabf6b4969f1c [file] [log] [blame]
Alexey Brodkina6aff432015-12-02 12:32:02 +03001/*
2 * Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
Masahiro Yamadafbb66bf2016-01-25 15:00:36 +09008#include <clk.h>
Marek Vasut851fecc2016-01-23 21:04:46 +01009#include <asm/io.h>
Alexey Brodkina6aff432015-12-02 12:32:02 +030010#include <dm.h>
11#include "ehci.h"
12
13/*
14 * Even though here we don't explicitly use "struct ehci_ctrl"
15 * ehci_register() expects it to be the first thing that resides in
16 * device's private data.
17 */
18struct generic_ehci {
19 struct ehci_ctrl ctrl;
20};
21
22static int ehci_usb_probe(struct udevice *dev)
23{
Marek Vasut851fecc2016-01-23 21:04:46 +010024 struct ehci_hccr *hccr;
Alexey Brodkina6aff432015-12-02 12:32:02 +030025 struct ehci_hcor *hcor;
Masahiro Yamadafbb66bf2016-01-25 15:00:36 +090026 int i;
27
28 for (i = 0; ; i++) {
29 struct udevice *clk_dev;
30 int clk_id;
31
32 clk_id = clk_get_by_index(dev, i, &clk_dev);
33 if (clk_id < 0)
34 break;
35 if (clk_enable(clk_dev, clk_id))
36 printf("failed to enable clock (dev=%s, id=%d)\n",
37 clk_dev->name, clk_id);
38 }
Alexey Brodkina6aff432015-12-02 12:32:02 +030039
Marek Vasut851fecc2016-01-23 21:04:46 +010040 hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE);
Alexey Brodkina6aff432015-12-02 12:32:02 +030041 hcor = (struct ehci_hcor *)((uintptr_t)hccr +
42 HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
43
44 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
45}
46
47static int ehci_usb_remove(struct udevice *dev)
48{
49 return ehci_deregister(dev);
50}
51
52static const struct udevice_id ehci_usb_ids[] = {
53 { .compatible = "generic-ehci" },
54 { }
55};
56
57U_BOOT_DRIVER(ehci_generic) = {
58 .name = "ehci_generic",
59 .id = UCLASS_USB,
60 .of_match = ehci_usb_ids,
61 .probe = ehci_usb_probe,
62 .remove = ehci_usb_remove,
63 .ops = &ehci_usb_ops,
64 .priv_auto_alloc_size = sizeof(struct generic_ehci),
65 .flags = DM_FLAG_ALLOC_PRIV_DMA,
66};