mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 01:19:49 +00:00
108 lines
2 KiB
C
108 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2021 Nuvoton Technology Corp.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <generic-phy.h>
|
|
#include <reset.h>
|
|
#include <asm/io.h>
|
|
#include <dm/device_compat.h>
|
|
#include <linux/delay.h>
|
|
#include "ohci.h"
|
|
|
|
struct npcm_ohci_priv {
|
|
ohci_t ohci;
|
|
struct phy phy;
|
|
};
|
|
|
|
static int npcm_ohci_setup_phy(struct udevice *dev, struct phy *phy)
|
|
{
|
|
int ret;
|
|
|
|
if (!phy)
|
|
return 0;
|
|
|
|
ret = generic_phy_get_by_index(dev, 0, phy);
|
|
if (ret) {
|
|
if (ret != -ENOENT) {
|
|
dev_err(dev, "failed to get usb phy\n");
|
|
return ret;
|
|
}
|
|
} else {
|
|
ret = generic_phy_init(phy);
|
|
if (ret) {
|
|
dev_err(dev, "failed to init usb phy\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int npcm_ohci_init(struct udevice *dev)
|
|
{
|
|
struct npcm_ohci_priv *priv = dev_get_priv(dev);
|
|
struct reset_ctl reset;
|
|
int ret;
|
|
|
|
ret = reset_get_by_index(dev, 0, &reset);
|
|
if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
|
|
dev_err(dev, "failed to get reset\n");
|
|
return ret;
|
|
}
|
|
|
|
/* reset controller */
|
|
if (reset_valid(&reset))
|
|
reset_assert(&reset);
|
|
|
|
/* setup phy */
|
|
ret = npcm_ohci_setup_phy(dev, &priv->phy);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* release controller from reset */
|
|
if (reset_valid(&reset))
|
|
reset_deassert(&reset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int npcm_ohci_probe(struct udevice *dev)
|
|
{
|
|
struct ohci_regs *regs = dev_read_addr_ptr(dev);
|
|
int ret;
|
|
|
|
ret = npcm_ohci_init(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ohci_register(dev, regs);
|
|
}
|
|
|
|
static int npcm_ohci_remove(struct udevice *dev)
|
|
{
|
|
struct npcm_ohci_priv *priv = dev_get_priv(dev);
|
|
|
|
generic_phy_exit(&priv->phy);
|
|
|
|
return ohci_deregister(dev);
|
|
}
|
|
|
|
static const struct udevice_id npcm_ohci_ids[] = {
|
|
{ .compatible = "nuvoton,npcm845-ohci" },
|
|
{ .compatible = "nuvoton,npcm750-ohci" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(ohci_npcm) = {
|
|
.name = "ohci_npcm",
|
|
.id = UCLASS_USB,
|
|
.of_match = npcm_ohci_ids,
|
|
.probe = npcm_ohci_probe,
|
|
.remove = npcm_ohci_remove,
|
|
.ops = &ohci_usb_ops,
|
|
.priv_auto = sizeof(struct npcm_ohci_priv),
|
|
.flags = DM_FLAG_ALLOC_PRIV_DMA,
|
|
};
|