| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com> |
| * |
| * Based on led-uclass.c |
| */ |
| |
| #define LOG_CATEGORY UCLASS_BUTTON |
| |
| #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_plat(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_plat_auto = sizeof(struct button_uc_plat), |
| }; |