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author | Andrew Bresticker <abrestic@chromium.org> | 2014-10-20 12:03:58 -0700 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:14 +0100 |
commit | fa5635a277171021d364f6a3fab4addce8f358d2 (patch) | |
tree | 9fff06b8d87eba632d5abc5346733cd01b368658 /drivers/clocksource/mips-gic-timer.c | |
parent | 53a7bc815a139a524f1d60c32b70455f02b87a6d (diff) | |
download | linux-stable-fa5635a277171021d364f6a3fab4addce8f358d2.tar.gz linux-stable-fa5635a277171021d364f6a3fab4addce8f358d2.tar.bz2 linux-stable-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/mips-gic-timer.c')
-rw-r--r-- | drivers/clocksource/mips-gic-timer.c | 32 |
1 files changed, 32 insertions, 0 deletions
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); +} |