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 22 extern struct of_device_id __clksrc_of_table[]; 23 24 static const struct of_device_id __clksrc_of_table_sentinel 25 __used __section(__clksrc_of_table_end); 26 clocksource_probe(void)27void __init clocksource_probe(void) 28 { 29 struct device_node *np; 30 const struct of_device_id *match; 31 of_init_fn_1 init_func; 32 unsigned clocksources = 0; 33 34 for_each_matching_node_and_match(np, __clksrc_of_table, &match) { 35 if (!of_device_is_available(np)) 36 continue; 37 38 init_func = match->data; 39 init_func(np); 40 clocksources++; 41 } 42 43 clocksources += acpi_probe_device_table(clksrc); 44 45 if (!clocksources) 46 pr_crit("%s: no matching clocksources found\n", __func__); 47 } 48