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authorChanwoo Choi <cw00.choi@samsung.com>2016-08-24 22:49:05 +0900
committerKrzysztof Kozlowski <k.kozlowski@samsung.com>2016-09-16 13:07:53 +0200
commitf1a4c1f33319e9d826df0ec040665501c6e8dca8 (patch)
tree7dd5253c09b1f5481645ad77d1755aab717b9402 /drivers/clocksource/exynos_mct.c
parent29b4817d4018df78086157ea3a55c1d9424a7cfc (diff)
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/exynos_mct.c')
-rw-r--r--drivers/clocksource/exynos_mct.c4
1 files changed, 4 insertions, 0 deletions
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);