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| author | Andrew Bresticker <abrestic@chromium.org> | 2014-10-20 12:03:58 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:14 +0100 |
| commit | fa5635a277171021d364f6a3fab4addce8f358d2 (patch) | |
| tree | 9fff06b8d87eba632d5abc5346733cd01b368658 /drivers/clocksource | |
| parent | 53a7bc815a139a524f1d60c32b70455f02b87a6d (diff) | |
| download | linux-fa5635a277171021d364f6a3fab4addce8f358d2.tar.gz linux-fa5635a277171021d364f6a3fab4addce8f358d2.tar.bz2 linux-fa5635a277171021d364f6a3fab4addce8f358d2.zip | |
MIPS: Move GIC clocksource driver to drivers/clocksource/
Move the GIC clocksource driver to drivers/clocksource/mips-gic-timer.c.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8133/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/clocksource/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clocksource/mips-gic-timer.c | 32 |
3 files changed, 37 insertions, 0 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 90420600e1eb..cb7e7f417a60 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -223,4 +223,8 @@ config CLKSRC_VERSATILE ARM Versatile, RealView and Versatile Express reference platforms. +config CLKSRC_MIPS_GIC + bool + depends on MIPS_GIC + endmenu diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 756f6f10efa0..e23fc2d5fc27 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -46,3 +46,4 @@ obj-$(CONFIG_CLKSRC_METAG_GENERIC) += metag_generic.o obj-$(CONFIG_ARCH_HAS_TICK_BROADCAST) += dummy_timer.o obj-$(CONFIG_ARCH_KEYSTONE) += timer-keystone.o obj-$(CONFIG_CLKSRC_VERSATILE) += versatile.o +obj-$(CONFIG_CLKSRC_MIPS_GIC) += mips-gic-timer.o diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c new file mode 100644 index 000000000000..0bf28e6aca7a --- /dev/null +++ b/drivers/clocksource/mips-gic-timer.c @@ -0,0 +1,32 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/irqchip/mips-gic.h> +#include <linux/time.h> + +static cycle_t gic_hpt_read(struct clocksource *cs) +{ + return gic_read_count(); +} + +static struct clocksource gic_clocksource = { + .name = "GIC", + .read = gic_hpt_read, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +void __init gic_clocksource_init(unsigned int frequency) +{ + /* Set clocksource mask. */ + gic_clocksource.mask = CLOCKSOURCE_MASK(gic_get_count_width()); + + /* Calculate a somewhat reasonable rating value. */ + gic_clocksource.rating = 200 + frequency / 10000000; + + clocksource_register_hz(&gic_clocksource, frequency); +} |