arm: arch_timer: move core to drivers/clocksource
The core functionality of the arch_timer driver is not directly tied to
anything under arch/arm, and can be split out.
This patch factors out the core of the arch_timer driver, so it can be
shared with other architectures. A couple of functions are added so
that architecture-specific code can interact with the driver without
needing to touch its internals.
The ARM_ARCH_TIMER config variable is moved out to
drivers/clocksource/Kconfig, existing uses in arch/arm are replaced with
HAVE_ARM_ARCH_TIMER, which selects it.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
diff --git a/arch/arm/include/asm/arch_timer.h b/arch/arm/include/asm/arch_timer.h
index 729f6d9..7ade91d 100644
--- a/arch/arm/include/asm/arch_timer.h
+++ b/arch/arm/include/asm/arch_timer.h
@@ -4,22 +4,14 @@
#include <asm/barrier.h>
#include <asm/errno.h>
#include <linux/clocksource.h>
+#include <linux/init.h>
#include <linux/types.h>
+#include <clocksource/arm_arch_timer.h>
+
#ifdef CONFIG_ARM_ARCH_TIMER
int arch_timer_of_register(void);
int arch_timer_sched_clock_init(void);
-struct timecounter *arch_timer_get_timecounter(void);
-
-#define ARCH_TIMER_CTRL_ENABLE (1 << 0)
-#define ARCH_TIMER_CTRL_IT_MASK (1 << 1)
-#define ARCH_TIMER_CTRL_IT_STAT (1 << 2)
-
-#define ARCH_TIMER_REG_CTRL 0
-#define ARCH_TIMER_REG_TVAL 1
-
-#define ARCH_TIMER_PHYS_ACCESS 0
-#define ARCH_TIMER_VIRT_ACCESS 1
/*
* These register accessors are marked inline so the compiler can
@@ -128,11 +120,6 @@
{
return -ENXIO;
}
-
-static inline struct timecounter *arch_timer_get_timecounter(void)
-{
- return NULL;
-}
#endif
#endif