1/*
2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <linux/acpi.h>
18#include <linux/init.h>
19#include <linux/of.h>
20#include <linux/clocksource.h>
21
22extern struct of_device_id __timer_of_table[];
23
24static const struct of_device_id __timer_of_table_sentinel
25 __used __section(__timer_of_table_end);
26
27void __init timer_probe(void)
28{
29 struct device_node *np;
30 const struct of_device_id *match;
31 of_init_fn_1_ret init_func_ret;
32 unsigned timers = 0;
33 int ret;
34
35 for_each_matching_node_and_match(np, __timer_of_table, &match) {
36 if (!of_device_is_available(np))
37 continue;
38
39 init_func_ret = match->data;
40
41 ret = init_func_ret(np);
42 if (ret) {
43 pr_err("Failed to initialize '%pOF': %d\n", np, ret);
44 continue;
45 }
46
47 timers++;
48 }
49
50 timers += acpi_probe_device_table(timer);
51
52 if (!timers)
53 pr_crit("%s: no matching timers found\n", __func__);
54}
55