| Sean Anderson | 46b2e5e | 2022-12-02 11:03:53 -0500 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright (C) 2022 Sean Anderson <sean.anderson@seco.com> |
| 4 | */ |
| 5 | |
| 6 | #include <common.h> |
| 7 | #include <dm.h> |
| 8 | #include <nvmem.h> |
| 9 | #include <reboot-mode/reboot-mode.h> |
| 10 | |
| 11 | /** |
| 12 | * struct nvmem_reboot_mode_priv - Private data for the nvmem reboot mode device |
| 13 | * @cell: The nvmem cell to store the mode in |
| 14 | */ |
| 15 | struct nvmem_reboot_mode_priv { |
| 16 | struct nvmem_cell cell; |
| 17 | }; |
| 18 | |
| 19 | static int reboot_mode_get(struct udevice *dev, u32 *mode) |
| 20 | { |
| 21 | struct nvmem_reboot_mode_priv *priv = dev_get_priv(dev); |
| 22 | |
| 23 | return nvmem_cell_read(&priv->cell, mode, sizeof(*mode)); |
| 24 | } |
| 25 | |
| 26 | static int reboot_mode_set(struct udevice *dev, u32 mode) |
| 27 | { |
| 28 | struct nvmem_reboot_mode_priv *priv = dev_get_priv(dev); |
| 29 | |
| 30 | return nvmem_cell_write(&priv->cell, &mode, sizeof(mode)); |
| 31 | } |
| 32 | |
| 33 | static const struct reboot_mode_ops nvmem_reboot_mode_ops = { |
| 34 | .get = reboot_mode_get, |
| 35 | .set = reboot_mode_set, |
| 36 | }; |
| 37 | |
| 38 | static int reboot_mode_probe(struct udevice *dev) |
| 39 | { |
| 40 | struct nvmem_reboot_mode_priv *priv = dev_get_priv(dev); |
| 41 | |
| 42 | return nvmem_cell_get_by_name(dev, "reboot-mode", &priv->cell); |
| 43 | } |
| 44 | |
| 45 | static const struct udevice_id nvmem_reboot_mode_ids[] = { |
| 46 | { .compatible = "nvmem-reboot-mode" }, |
| 47 | { } |
| 48 | }; |
| 49 | |
| 50 | U_BOOT_DRIVER(nvmem_reboot_mode) = { |
| 51 | .name = "nvmem-reboot-mode", |
| 52 | .id = UCLASS_REBOOT_MODE, |
| 53 | .of_match = nvmem_reboot_mode_ids, |
| 54 | .probe = reboot_mode_probe, |
| 55 | .priv_auto = sizeof(struct nvmem_reboot_mode_priv), |
| 56 | .ops = &nvmem_reboot_mode_ops, |
| 57 | }; |