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clocksource: add common of_clksrc_init() function
It is desirable to move all clocksource drivers to drivers/clocksource, yet each requires its own initialization function. We'd rather not pollute <linux/> with a header for each function. Instead, create a single of_clksrc_init() function which will determine which clocksource driver to initialize based on device tree. Based on a similar patch for drivers/irqchip by Thomas Petazzoni. Signed-off-by: Stephen Warren <[email protected]>
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config CLKSRC_OF | ||
bool | ||
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config CLKSRC_I8253 | ||
bool | ||
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/* | ||
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. | ||
* | ||
* This program is free software; you can redistribute it and/or modify it | ||
* under the terms and conditions of the GNU General Public License, | ||
* version 2, as published by the Free Software Foundation. | ||
* | ||
* This program is distributed in the hope it will be useful, but WITHOUT | ||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
* more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
*/ | ||
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#include <linux/init.h> | ||
#include <linux/of.h> | ||
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extern struct of_device_id __clksrc_of_table[]; | ||
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static const struct of_device_id __clksrc_of_table_sentinel | ||
__used __section(__clksrc_of_table_end); | ||
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void __init clocksource_of_init(void) | ||
{ | ||
struct device_node *np; | ||
const struct of_device_id *match; | ||
void (*init_func)(void); | ||
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for_each_matching_node_and_match(np, __clksrc_of_table, &match) { | ||
init_func = match->data; | ||
init_func(); | ||
} | ||
} |
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