From b09ca1ecf6d499d5a33f978c905d2fbcc79b55d9 Mon Sep 17 00:00:00 2001
From: Hanjun Guo <hanjun.guo@linaro.org>
Date: Tue, 24 Mar 2015 14:02:50 +0000
Subject: clocksource / arch_timer: Parse GTDT to initialize arch timer

Using the information presented by GTDT (Generic Timer Description Table)
to initialize the arch timer (not memory-mapped).

CC: Daniel Lezcano <daniel.lezcano@linaro.org>
CC: Thomas Gleixner <tglx@linutronix.de>
Originally-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Tested-by: Yijing Wang <wangyijing@huawei.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
Tested-by: Timur Tabi <timur@codeaurora.org>
Tested-by: Robert Richter <rrichter@cavium.com>
Acked-by: Robert Richter <rrichter@cavium.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
 include/linux/clocksource.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'include/linux/clocksource.h')

diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 9c78d15d33e4..2b2e1f80c519 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -244,4 +244,10 @@ extern void clocksource_of_init(void);
 static inline void clocksource_of_init(void) {}
 #endif
 
+#ifdef CONFIG_ACPI
+void acpi_generic_timer_init(void);
+#else
+static inline void acpi_generic_timer_init(void) { }
+#endif
+
 #endif /* _LINUX_CLOCKSOURCE_H */
-- 
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