Alexey Brodkin | a6aff43 | 2015-12-02 12:32:02 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
Masahiro Yamada | fbb66bf | 2016-01-25 15:00:36 +0900 | [diff] [blame] | 8 | #include <clk.h> |
Marek Vasut | 851fecc | 2016-01-23 21:04:46 +0100 | [diff] [blame] | 9 | #include <asm/io.h> |
Alexey Brodkin | a6aff43 | 2015-12-02 12:32:02 +0300 | [diff] [blame] | 10 | #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 | */ |
| 18 | struct generic_ehci { |
| 19 | struct ehci_ctrl ctrl; |
| 20 | }; |
| 21 | |
| 22 | static int ehci_usb_probe(struct udevice *dev) |
| 23 | { |
Marek Vasut | 851fecc | 2016-01-23 21:04:46 +0100 | [diff] [blame] | 24 | struct ehci_hccr *hccr; |
Alexey Brodkin | a6aff43 | 2015-12-02 12:32:02 +0300 | [diff] [blame] | 25 | struct ehci_hcor *hcor; |
Masahiro Yamada | fbb66bf | 2016-01-25 15:00:36 +0900 | [diff] [blame] | 26 | 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 Brodkin | a6aff43 | 2015-12-02 12:32:02 +0300 | [diff] [blame] | 39 | |
Marek Vasut | 851fecc | 2016-01-23 21:04:46 +0100 | [diff] [blame] | 40 | hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE); |
Alexey Brodkin | a6aff43 | 2015-12-02 12:32:02 +0300 | [diff] [blame] | 41 | 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 | |
| 47 | static int ehci_usb_remove(struct udevice *dev) |
| 48 | { |
| 49 | return ehci_deregister(dev); |
| 50 | } |
| 51 | |
| 52 | static const struct udevice_id ehci_usb_ids[] = { |
| 53 | { .compatible = "generic-ehci" }, |
| 54 | { } |
| 55 | }; |
| 56 | |
| 57 | U_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 | }; |