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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2021 Nuvoton Technology Corp.
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*/
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#include <common.h>
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#include <dm.h>
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#include <generic-phy.h>
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#include <reset.h>
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#include <asm/io.h>
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#include <dm/device_compat.h>
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#include <linux/delay.h>
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#include "ehci.h"
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struct npcm_ehci_priv {
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struct ehci_ctrl ctrl;
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struct ehci_hccr *hcd;
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struct phy phy;
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};
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static int npcm_ehci_setup_phy(struct udevice *dev, struct phy *phy)
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{
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int ret;
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if (!phy)
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return 0;
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ret = generic_phy_get_by_index(dev, 0, phy);
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if (ret) {
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if (ret != -ENOENT) {
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dev_err(dev, "failed to get usb phy\n");
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return ret;
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}
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} else {
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ret = generic_phy_init(phy);
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if (ret) {
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dev_err(dev, "failed to init usb phy\n");
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return ret;
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}
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}
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return 0;
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}
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static int npcm_ehci_init(struct udevice *dev)
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{
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struct npcm_ehci_priv *priv = dev_get_priv(dev);
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struct reset_ctl reset;
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int ret;
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ret = reset_get_by_index(dev, 0, &reset);
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if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
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dev_err(dev, "failed to get reset\n");
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return ret;
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}
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/* reset controller */
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if (reset_valid(&reset))
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reset_assert(&reset);
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/* setup phy */
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ret = npcm_ehci_setup_phy(dev, &priv->phy);
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if (ret)
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return ret;
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/* release controller from reset */
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if (reset_valid(&reset))
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reset_deassert(&reset);
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return 0;
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}
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static int npcm_ehci_probe(struct udevice *dev)
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{
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struct npcm_ehci_priv *priv = dev_get_priv(dev);
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struct ehci_hcor *hcor;
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enum usb_init_type type = dev_get_driver_data(dev);
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int ret;
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ret = npcm_ehci_init(dev);
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if (ret)
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return ret;
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priv->hcd = (struct ehci_hccr *)dev_read_addr_ptr(dev);
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debug("USB HCD @0x%p\n", priv->hcd);
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hcor = (struct ehci_hcor *)((uintptr_t)priv->hcd +
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HC_LENGTH(ehci_readl(&priv->hcd->cr_capbase)));
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return ehci_register(dev, priv->hcd, hcor, NULL, 0, type);
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}
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static int npcm_ehci_remove(struct udevice *dev)
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{
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struct npcm_ehci_priv *priv = dev_get_priv(dev);
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generic_phy_exit(&priv->phy);
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return ehci_deregister(dev);
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}
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static const struct udevice_id npcm_ehci_ids[] = {
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{ .compatible = "nuvoton,npcm845-ehci", .data = USB_INIT_HOST },
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{ .compatible = "nuvoton,npcm845-udc", .data = USB_INIT_DEVICE },
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{ .compatible = "nuvoton,npcm750-ehci", .data = USB_INIT_HOST },
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{ .compatible = "nuvoton,npcm750-udc", .data = USB_INIT_DEVICE },
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{ }
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};
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U_BOOT_DRIVER(ehci_npcm) = {
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.name = "ehci_npcm",
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.id = UCLASS_USB,
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.of_match = npcm_ehci_ids,
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.probe = npcm_ehci_probe,
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.remove = npcm_ehci_remove,
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.ops = &ehci_usb_ops,
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.priv_auto = sizeof(struct npcm_ehci_priv),
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.plat_auto = sizeof(struct usb_plat),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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