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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <log.h>
#include <dm/device_compat.h>
#include <dm/devres.h>
#include <dm/ofnode.h>
#include <generic-phy.h>
#include <reset.h>
#include "ohci.h"
struct generic_ohci {
ohci_t ohci;
struct clk_bulk clocks; /* clock list */
struct reset_ctl_bulk resets; /* reset list */
struct phy phy;
};
static int ohci_usb_probe(struct udevice *dev)
{
struct ohci_regs *regs = dev_read_addr_ptr(dev);
struct generic_ohci *priv = dev_get_priv(dev);
int err, ret;
ret = clk_get_bulk(dev, &priv->clocks);
if (ret && ret != -ENOENT) {
dev_err(dev, "Failed to get clocks (ret=%d)\n", ret);
return ret;
}
err = clk_enable_bulk(&priv->clocks);
if (err) {
dev_err(dev, "Failed to enable clocks (err=%d)\n", err);
goto clk_err;
}
err = reset_get_bulk(dev, &priv->resets);
if (err && err != -ENOENT) {
dev_err(dev, "failed to get resets (err=%d)\n", err);
goto clk_err;
}
err = reset_deassert_bulk(&priv->resets);
if (err) {
dev_err(dev, "failed to deassert resets (err=%d)\n", err);
goto reset_err;
}
err = generic_setup_phy(dev, &priv->phy, 0);
if (err)
goto reset_err;
err = ohci_register(dev, regs);
if (err)
goto phy_err;
return 0;
phy_err:
ret = generic_shutdown_phy(&priv->phy);
if (ret)
dev_err(dev, "failed to shutdown usb phy\n");
reset_err:
ret = reset_release_bulk(&priv->resets);
if (ret)
dev_err(dev, "failed to release resets (ret=%d)\n", ret);
clk_err:
ret = clk_release_bulk(&priv->clocks);
if (ret)
dev_err(dev, "failed to release clocks (ret=%d)\n", ret);
return err;
}
static int ohci_usb_remove(struct udevice *dev)
{
struct generic_ohci *priv = dev_get_priv(dev);
int ret;
ret = ohci_deregister(dev);
if (ret)
return ret;
ret = generic_shutdown_phy(&priv->phy);
if (ret)
return ret;
ret = reset_release_bulk(&priv->resets);
if (ret)
return ret;
return clk_release_bulk(&priv->clocks);
}
static const struct udevice_id ohci_usb_ids[] = {
{ .compatible = "generic-ohci" },
{ }
};
U_BOOT_DRIVER(ohci_generic) = {
.name = "ohci_generic",
.id = UCLASS_USB,
.of_match = ohci_usb_ids,
.probe = ohci_usb_probe,
.remove = ohci_usb_remove,
.ops = &ohci_usb_ops,
.priv_auto = sizeof(struct generic_ohci),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
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