mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-18 17:23:09 +00:00
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Driver for onboard USB hubs
|
||
|
|
*
|
||
|
|
* Copyright (C) 2022, STMicroelectronics - All Rights Reserved
|
||
|
|
*
|
||
|
|
* Mostly inspired by Linux kernel v6.1 onboard_usb_hub driver
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <dm.h>
|
||
|
|
#include <dm/device_compat.h>
|
||
|
|
#include <power/regulator.h>
|
||
|
|
|
||
|
|
struct onboard_hub {
|
||
|
|
struct udevice *vdd;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int usb_onboard_hub_probe(struct udevice *dev)
|
||
|
|
{
|
||
|
|
struct onboard_hub *hub = dev_get_priv(dev);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = device_get_supply_regulator(dev, "vdd-supply", &hub->vdd);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(dev, "can't get vdd-supply: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = regulator_set_enable_if_allowed(hub->vdd, true);
|
||
|
|
if (ret)
|
||
|
|
dev_err(dev, "can't enable vdd-supply: %d\n", ret);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int usb_onboard_hub_remove(struct udevice *dev)
|
||
|
|
{
|
||
|
|
struct onboard_hub *hub = dev_get_priv(dev);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = regulator_set_enable_if_allowed(hub->vdd, false);
|
||
|
|
if (ret)
|
||
|
|
dev_err(dev, "can't disable vdd-supply: %d\n", ret);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct udevice_id usb_onboard_hub_ids[] = {
|
||
|
|
/* Use generic usbVID,PID dt-bindings (usb-device.yaml) */
|
||
|
|
{ .compatible = "usb424,2514" }, /* USB2514B USB 2.0 */
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
|
||
|
|
U_BOOT_DRIVER(usb_onboard_hub) = {
|
||
|
|
.name = "usb_onboard_hub",
|
||
|
|
.id = UCLASS_USB_HUB,
|
||
|
|
.probe = usb_onboard_hub_probe,
|
||
|
|
.remove = usb_onboard_hub_remove,
|
||
|
|
.of_match = usb_onboard_hub_ids,
|
||
|
|
.priv_auto = sizeof(struct onboard_hub),
|
||
|
|
};
|