mirror of
https://github.com/AsahiLinux/u-boot
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63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for onboard USB hubs
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*
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* Copyright (C) 2022, STMicroelectronics - All Rights Reserved
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*
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* Mostly inspired by Linux kernel v6.1 onboard_usb_hub driver
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/device_compat.h>
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#include <power/regulator.h>
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struct onboard_hub {
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struct udevice *vdd;
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};
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static int usb_onboard_hub_probe(struct udevice *dev)
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{
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struct onboard_hub *hub = dev_get_priv(dev);
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int ret;
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ret = device_get_supply_regulator(dev, "vdd-supply", &hub->vdd);
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if (ret) {
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dev_err(dev, "can't get vdd-supply: %d\n", ret);
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return ret;
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}
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ret = regulator_set_enable_if_allowed(hub->vdd, true);
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if (ret)
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dev_err(dev, "can't enable vdd-supply: %d\n", ret);
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return ret;
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}
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static int usb_onboard_hub_remove(struct udevice *dev)
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{
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struct onboard_hub *hub = dev_get_priv(dev);
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int ret;
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ret = regulator_set_enable_if_allowed(hub->vdd, false);
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if (ret)
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dev_err(dev, "can't disable vdd-supply: %d\n", ret);
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return ret;
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}
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static const struct udevice_id usb_onboard_hub_ids[] = {
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/* Use generic usbVID,PID dt-bindings (usb-device.yaml) */
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{ .compatible = "usb424,2514" }, /* USB2514B USB 2.0 */
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{ }
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};
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U_BOOT_DRIVER(usb_onboard_hub) = {
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.name = "usb_onboard_hub",
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.id = UCLASS_USB_HUB,
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.probe = usb_onboard_hub_probe,
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.remove = usb_onboard_hub_remove,
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.of_match = usb_onboard_hub_ids,
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.priv_auto = sizeof(struct onboard_hub),
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};
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