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https://github.com/AsahiLinux/u-boot
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149c751dc7
If CONFIG_OF_CONTROL is defined, search device tree nodes that are compatible with "panasonic,uniphier-ehci" and take the base address from their "reg" property. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Marek Vasut <marex@denx.de>
75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
/*
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* Copyright (C) 2014 Panasonic Corporation
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* Author: Masahiro Yamada <yamada.m@jp.panasonic.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 <linux/err.h>
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#include <usb.h>
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#include <asm/arch/ehci-uniphier.h>
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#include "ehci.h"
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#ifdef CONFIG_OF_CONTROL
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#include <fdtdec.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define FDT gd->fdt_blob
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#define COMPAT "panasonic,uniphier-ehci"
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static int get_uniphier_ehci_base(int index, struct ehci_hccr **base)
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{
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int offset;
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for (offset = fdt_node_offset_by_compatible(FDT, 0, COMPAT);
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offset >= 0;
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offset = fdt_node_offset_by_compatible(FDT, offset, COMPAT)) {
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if (index == 0) {
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*base = (struct ehci_hccr *)
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fdtdec_get_addr(FDT, offset, "reg");
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return 0;
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}
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index--;
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}
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return -ENODEV; /* not found */
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}
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#else
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static int get_uniphier_ehci_base(int index, struct ehci_hccr **base)
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{
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*base = (struct ehci_hccr *)uniphier_ehci_platdata[index].base;
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return 0;
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}
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#endif
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/*
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* Create the appropriate control structures to manage
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* a new EHCI host controller.
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*/
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int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
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struct ehci_hcor **hcor)
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{
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int ret;
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struct ehci_hccr *cr;
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struct ehci_hcor *or;
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uniphier_ehci_reset(index, 0);
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ret = get_uniphier_ehci_base(index, &cr);
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if (ret < 0)
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return ret;
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or = (void *)cr + HC_LENGTH(ehci_readl(&cr->cr_capbase));
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*hccr = cr;
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*hcor = or;
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return 0;
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}
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int ehci_hcd_stop(int index)
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{
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uniphier_ehci_reset(index, 1);
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return 0;
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}
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