75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
/*
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* Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk.h>
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#include <reset.h>
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#include <asm/io.h>
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#include <dm.h>
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#include "ehci.h"
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/*
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* Even though here we don't explicitly use "struct ehci_ctrl"
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* ehci_register() expects it to be the first thing that resides in
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* device's private data.
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*/
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struct generic_ehci {
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struct ehci_ctrl ctrl;
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};
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static int ehci_usb_probe(struct udevice *dev)
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{
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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int i;
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for (i = 0; ; i++) {
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, i, &clk);
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if (ret < 0)
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break;
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if (clk_enable(&clk))
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printf("failed to enable clock %d\n", i);
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clk_free(&clk);
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}
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for (i = 0; ; i++) {
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struct reset_ctl reset;
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int ret;
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ret = reset_get_by_index(dev, i, &reset);
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if (ret < 0)
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break;
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if (reset_deassert(&reset))
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printf("failed to deassert reset %d\n", i);
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reset_free(&reset);
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}
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hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE);
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hcor = (struct ehci_hcor *)((uintptr_t)hccr +
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HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
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}
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static const struct udevice_id ehci_usb_ids[] = {
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{ .compatible = "generic-ehci" },
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{ }
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};
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U_BOOT_DRIVER(ehci_generic) = {
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.name = "ehci_generic",
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.id = UCLASS_USB,
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.of_match = ehci_usb_ids,
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.probe = ehci_usb_probe,
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.remove = ehci_deregister,
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.ops = &ehci_usb_ops,
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.priv_auto_alloc_size = sizeof(struct generic_ehci),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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