diff options
| author | Chanwoo Choi <cw00.choi@samsung.com> | 2016-08-24 16:49:05 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2016-09-16 14:07:53 +0300 |
| commit | f1a4c1f33319e9d826df0ec040665501c6e8dca8 (patch) | |
| tree | 7dd5253c09b1f5481645ad77d1755aab717b9402 /drivers/clocksource | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
| download | linux-f1a4c1f33319e9d826df0ec040665501c6e8dca8.tar.xz | |
clocksource: exynos_mct: Add the support for ARM64
This patch allows building and compile-testing the driver also for
ARM64. The delay_timer is only supported on ARMv7.
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[k.kozlowski: Adjusted commit msg]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/clocksource/exynos_mct.c | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 567788664723..ec443c318c77 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -351,7 +351,7 @@ config CLKSRC_METAG_GENERIC config CLKSRC_EXYNOS_MCT bool "Exynos multi core timer driver" if COMPILE_TEST - depends on ARM + depends on ARM || ARM64 help Support for Multi Core Timer controller on Exynos SoCs. diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index 41840d02c331..8f3488b80896 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -223,6 +223,7 @@ static u64 notrace exynos4_read_sched_clock(void) return exynos4_read_count_32(); } +#if defined(CONFIG_ARM) static struct delay_timer exynos4_delay_timer; static cycles_t exynos4_read_current_timer(void) @@ -231,14 +232,17 @@ static cycles_t exynos4_read_current_timer(void) "cycles_t needs to move to 32-bit for ARM64 usage"); return exynos4_read_count_32(); } +#endif static int __init exynos4_clocksource_init(void) { exynos4_mct_frc_start(); +#if defined(CONFIG_ARM) exynos4_delay_timer.read_current_timer = &exynos4_read_current_timer; exynos4_delay_timer.freq = clk_rate; register_current_timer_delay(&exynos4_delay_timer); +#endif if (clocksource_register_hz(&mct_frc, clk_rate)) panic("%s: can't register clocksource\n", mct_frc.name); |