diff options
| author | Stephen Warren <swarren@nvidia.com> | 2012-11-20 03:41:20 +0400 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-01-02 22:07:43 +0400 |
| commit | ae278a935f086775e8ae31a8ec9f7224ea25ea3c (patch) | |
| tree | efd3d6d7c29271af8acb283b2cc8ffd6dc39570b /drivers | |
| parent | 6bb27d7349db51b50c40534710fe164ca0d58902 (diff) | |
| download | linux-ae278a935f086775e8ae31a8ec9f7224ea25ea3c.tar.xz | |
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 <swarren@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clocksource/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/clocksource/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clocksource/clksrc-of.c | 35 |
3 files changed, 39 insertions, 0 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 7fdcbd3f4da5..a32b7a9c65d3 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -1,3 +1,6 @@ +config CLKSRC_OF + bool + config CLKSRC_I8253 bool diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index f93453d01673..a33f79240217 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -1,3 +1,4 @@ +obj-$(CONFIG_CLKSRC_OF) += clksrc-of.o obj-$(CONFIG_ATMEL_TCB_CLKSRC) += tcb_clksrc.o obj-$(CONFIG_X86_CYCLONE_TIMER) += cyclone.o obj-$(CONFIG_X86_PM_TIMER) += acpi_pm.o diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c new file mode 100644 index 000000000000..bdabdaa8d00f --- /dev/null +++ b/drivers/clocksource/clksrc-of.c @@ -0,0 +1,35 @@ +/* + * 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/>. + */ + +#include <linux/init.h> +#include <linux/of.h> + +extern struct of_device_id __clksrc_of_table[]; + +static const struct of_device_id __clksrc_of_table_sentinel + __used __section(__clksrc_of_table_end); + +void __init clocksource_of_init(void) +{ + struct device_node *np; + const struct of_device_id *match; + void (*init_func)(void); + + for_each_matching_node_and_match(np, __clksrc_of_table, &match) { + init_func = match->data; + init_func(); + } +} |