mirror of
https://github.com/brain-hackers/u-boot-brain
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4feefdcfe9
This driver is designed in a generic manner, so clocks should be handled genericly as well. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
65 lines
1.4 KiB
C
65 lines
1.4 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 <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 = (struct ehci_hccr *)dev_get_addr(dev);
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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 udevice *clk_dev;
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int clk_id;
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clk_id = clk_get_by_index(dev, i, &clk_dev);
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if (clk_id < 0)
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break;
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if (clk_enable(clk_dev, clk_id))
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printf("failed to enable clock (dev=%s, id=%d)\n",
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clk_dev->name, clk_id);
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}
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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 int ehci_usb_remove(struct udevice *dev)
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{
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return ehci_deregister(dev);
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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_usb_remove,
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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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