109 lines
2.0 KiB
C
109 lines
2.0 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 "ohci.h"
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struct npcm_ohci_priv {
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ohci_t ohci;
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struct phy phy;
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};
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static int npcm_ohci_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_ohci_init(struct udevice *dev)
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{
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struct npcm_ohci_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_ohci_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_ohci_probe(struct udevice *dev)
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{
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struct ohci_regs *regs = dev_read_addr_ptr(dev);
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int ret;
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ret = npcm_ohci_init(dev);
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if (ret)
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return ret;
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return ohci_register(dev, regs);
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}
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static int npcm_ohci_remove(struct udevice *dev)
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{
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struct npcm_ohci_priv *priv = dev_get_priv(dev);
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generic_phy_exit(&priv->phy);
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return ohci_deregister(dev);
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}
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static const struct udevice_id npcm_ohci_ids[] = {
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{ .compatible = "nuvoton,npcm845-ohci" },
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{ .compatible = "nuvoton,npcm750-ohci" },
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{ }
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};
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U_BOOT_DRIVER(ohci_npcm) = {
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.name = "ohci_npcm",
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.id = UCLASS_USB,
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.of_match = npcm_ohci_ids,
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.probe = npcm_ohci_probe,
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.remove = npcm_ohci_remove,
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.ops = &ohci_usb_ops,
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.priv_auto = sizeof(struct npcm_ohci_priv),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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