diff options
| -rw-r--r-- | drivers/clocksource/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/clocksource/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clocksource/clksrc-of.c | 35 | ||||
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 9 | ||||
| -rw-r--r-- | include/linux/clocksource.h | 9 |
5 files changed, 57 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(); + } +} diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index d1ea7ce0b4cb..1e744c5a0ffe 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -149,6 +149,14 @@ #define TRACE_SYSCALLS() #endif +#ifdef CONFIG_CLKSRC_OF +#define CLKSRC_OF_TABLES() . = ALIGN(8); \ + VMLINUX_SYMBOL(__clksrc_of_table) = .; \ + *(__clksrc_of_table) \ + *(__clksrc_of_table_end) +#else +#define CLKSRC_OF_TABLES() +#endif #define KERNEL_DTB() \ STRUCT_ALIGN(); \ @@ -493,6 +501,7 @@ DEV_DISCARD(init.rodata) \ CPU_DISCARD(init.rodata) \ MEM_DISCARD(init.rodata) \ + CLKSRC_OF_TABLES() \ KERNEL_DTB() #define INIT_TEXT \ diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 4dceaf8ae152..7944f14ea947 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -332,4 +332,13 @@ extern int clocksource_mmio_init(void __iomem *, const char *, extern int clocksource_i8253_init(void); +#ifdef CONFIG_CLKSRC_OF +extern void clocksource_of_init(void); + +#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \ + static const struct of_device_id __clksrc_of_table_##name \ + __used __section(__clksrc_of_table) \ + = { .compatible = compat, .data = fn }; +#endif + #endif /* _LINUX_CLOCKSOURCE_H */ |