1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2026 Bootlin
4 *
5 * Authors: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
6 */
7
8 #include <linux/nvmem-provider.h>
9 #include <linux/of.h>
10
11 #include "../internals.h"
12
fixed_layout_add_cells(struct nvmem_layout * layout)13 static int fixed_layout_add_cells(struct nvmem_layout *layout)
14 {
15 struct device_node *np;
16 int ret;
17
18 np = of_nvmem_layout_get_container(layout->nvmem);
19 if (!np)
20 return -ENOENT;
21
22 ret = nvmem_add_cells_from_dt(layout->nvmem, np);
23 of_node_put(np);
24
25 return ret;
26 }
27
fixed_layout_probe(struct nvmem_layout * layout)28 static int fixed_layout_probe(struct nvmem_layout *layout)
29 {
30 layout->add_cells = fixed_layout_add_cells;
31
32 return nvmem_layout_register(layout);
33 }
34
fixed_layout_remove(struct nvmem_layout * layout)35 static void fixed_layout_remove(struct nvmem_layout *layout)
36 {
37 nvmem_layout_unregister(layout);
38 }
39
40 static const struct of_device_id fixed_layout_of_match_table[] = {
41 { .compatible = "fixed-layout", },
42 {},
43 };
44
45 static struct nvmem_layout_driver fixed_layout_layout = {
46 .driver = {
47 .name = "fixed-layout",
48 .of_match_table = fixed_layout_of_match_table,
49 },
50 .probe = fixed_layout_probe,
51 .remove = fixed_layout_remove,
52 };
53 module_nvmem_layout_driver(fixed_layout_layout);
54
55 MODULE_AUTHOR("Mathieu Dubois-Briand");
56 MODULE_LICENSE("GPL");
57 MODULE_DEVICE_TABLE(of, fixed_layout_of_match_table);
58 MODULE_DESCRIPTION("NVMEM fixed-layout driver");
59