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376bc271 DL |
1 | /* |
2 | * Copyright (c) 2016, Linaro Ltd. All rights reserved. | |
3 | * Daniel Lezcano <daniel.lezcano@linaro.org> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #include <linux/init.h> | |
19 | #include <linux/of.h> | |
20 | #include <linux/clockchip.h> | |
21 | ||
22 | extern struct of_device_id __clkevt_of_table[]; | |
23 | ||
24 | static const struct of_device_id __clkevt_of_table_sentinel | |
25 | __used __section(__clkevt_of_table_end); | |
26 | ||
27 | int __init clockevent_probe(void) | |
28 | { | |
29 | struct device_node *np; | |
30 | const struct of_device_id *match; | |
31 | of_init_fn_1_ret init_func; | |
32 | int ret, clockevents = 0; | |
33 | ||
34 | for_each_matching_node_and_match(np, __clkevt_of_table, &match) { | |
35 | if (!of_device_is_available(np)) | |
36 | continue; | |
37 | ||
38 | init_func = match->data; | |
39 | ||
40 | ret = init_func(np); | |
41 | if (ret) { | |
42 | pr_warn("Failed to initialize '%s' (%d)\n", | |
43 | np->name, ret); | |
44 | continue; | |
45 | } | |
46 | ||
47 | clockevents++; | |
48 | } | |
49 | ||
50 | if (!clockevents) { | |
51 | pr_crit("%s: no matching clockevent found\n", __func__); | |
52 | return -ENODEV; | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } |