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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
- *
- * Based on led-uclass.c
- */
- #include <common.h>
- #include <button.h>
- #include <dm.h>
- #include <dm/uclass-internal.h>
- int button_get_by_label(const char *label, struct udevice **devp)
- {
- struct udevice *dev;
- struct uclass *uc;
- uclass_id_foreach_dev(UCLASS_BUTTON, dev, uc) {
- struct button_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
- /* Ignore the top-level button node */
- if (uc_plat->label && !strcmp(label, uc_plat->label))
- return uclass_get_device_tail(dev, 0, devp);
- }
- return -ENODEV;
- }
- enum button_state_t button_get_state(struct udevice *dev)
- {
- struct button_ops *ops = button_get_ops(dev);
- if (!ops->get_state)
- return -ENOSYS;
- return ops->get_state(dev);
- }
- UCLASS_DRIVER(button) = {
- .id = UCLASS_BUTTON,
- .name = "button",
- .per_device_platdata_auto_alloc_size = sizeof(struct button_uc_plat),
- };
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