mirror of
https://github.com/AsahiLinux/u-boot
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083f8aa978
Replace ehci_setup_phy() and ehci_shutdown_phy () by respectively generic_setup_phy() and generic_shutdown_phy(). Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Cc: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org>
173 lines
3.7 KiB
C
173 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
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*/
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#include <common.h>
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#include <clk.h>
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#include <log.h>
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#include <dm/device_compat.h>
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#include <dm/devres.h>
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#include <dm/ofnode.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.h>
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#include "ehci.h"
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#include <power/regulator.h>
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/*
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* Even though here we don't explicitly use "struct ehci_ctrl"
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* ehci_register() expects it to be the first thing that resides in
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* device's private data.
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*/
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struct generic_ehci {
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struct ehci_ctrl ctrl;
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struct clk_bulk clocks;
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struct reset_ctl_bulk resets;
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struct phy phy;
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struct udevice *vbus_supply;
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};
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static int ehci_enable_vbus_supply(struct udevice *dev)
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{
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struct generic_ehci *priv = dev_get_priv(dev);
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int ret;
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ret = device_get_supply_regulator(dev, "vbus-supply",
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&priv->vbus_supply);
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if (ret && ret != -ENOENT)
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return ret;
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if (priv->vbus_supply) {
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ret = regulator_set_enable(priv->vbus_supply, true);
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if (ret) {
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dev_err(dev, "Error enabling VBUS supply (ret=%d)\n", ret);
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return ret;
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}
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} else {
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dev_dbg(dev, "No vbus supply\n");
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}
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return 0;
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}
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static int ehci_disable_vbus_supply(struct generic_ehci *priv)
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{
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if (priv->vbus_supply)
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return regulator_set_enable(priv->vbus_supply, false);
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else
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return 0;
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}
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static int ehci_usb_probe(struct udevice *dev)
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{
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struct generic_ehci *priv = dev_get_priv(dev);
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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int err, ret;
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err = 0;
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ret = clk_get_bulk(dev, &priv->clocks);
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if (ret && ret != -ENOENT) {
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dev_err(dev, "Failed to get clocks (ret=%d)\n", ret);
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return ret;
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}
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err = clk_enable_bulk(&priv->clocks);
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if (err) {
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dev_err(dev, "Failed to enable clocks (err=%d)\n", err);
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goto clk_err;
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}
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err = reset_get_bulk(dev, &priv->resets);
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if (err && err != -ENOENT) {
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dev_err(dev, "Failed to get resets (err=%d)\n", err);
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goto clk_err;
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}
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err = reset_deassert_bulk(&priv->resets);
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if (err) {
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dev_err(dev, "Failed to get deassert resets (err=%d)\n", err);
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goto reset_err;
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}
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err = ehci_enable_vbus_supply(dev);
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if (err)
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goto reset_err;
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err = generic_setup_phy(dev, &priv->phy, 0);
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if (err)
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goto regulator_err;
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hccr = map_physmem(dev_read_addr(dev), 0x100, MAP_NOCACHE);
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hcor = (struct ehci_hcor *)((uintptr_t)hccr +
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HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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err = ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
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if (err)
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goto phy_err;
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return 0;
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phy_err:
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ret = generic_shutdown_phy(&priv->phy);
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if (ret)
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dev_err(dev, "failed to shutdown usb phy (ret=%d)\n", ret);
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regulator_err:
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ret = ehci_disable_vbus_supply(priv);
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if (ret)
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dev_err(dev, "failed to disable VBUS supply (ret=%d)\n", ret);
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reset_err:
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ret = reset_release_bulk(&priv->resets);
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if (ret)
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dev_err(dev, "failed to release resets (ret=%d)\n", ret);
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clk_err:
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ret = clk_release_bulk(&priv->clocks);
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if (ret)
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dev_err(dev, "failed to release clocks (ret=%d)\n", ret);
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return err;
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}
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static int ehci_usb_remove(struct udevice *dev)
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{
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struct generic_ehci *priv = dev_get_priv(dev);
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int ret;
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ret = ehci_deregister(dev);
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if (ret)
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return ret;
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ret = generic_shutdown_phy(&priv->phy);
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if (ret)
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return ret;
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ret = ehci_disable_vbus_supply(priv);
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if (ret)
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return ret;
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ret = reset_release_bulk(&priv->resets);
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if (ret)
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return ret;
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return clk_release_bulk(&priv->clocks);
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}
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static const struct udevice_id ehci_usb_ids[] = {
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{ .compatible = "generic-ehci" },
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{ }
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};
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U_BOOT_DRIVER(ehci_generic) = {
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.name = "ehci_generic",
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.id = UCLASS_USB,
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.of_match = ehci_usb_ids,
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.probe = ehci_usb_probe,
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.remove = ehci_usb_remove,
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.ops = &ehci_usb_ops,
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.priv_auto = sizeof(struct generic_ehci),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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