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clocksource: arm_arch_timer: Enable counter access for 32-bit ARM

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The only difference between arm and arm64's implementations of
arch_counter_set_user_access is that 32-bit ARM does not enable user
access to the virtual counter.  We want to enable this access for the
32-bit ARM VDSO, so copy the arm64 version to the driver itself, and
remove the arch-specific implementations.

Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Nathan Lynch
2014-09-29 01:50:06 +02:00
committed by Daniel Lezcano
parent 423bd69e69
commit 8b8dde0034
3 changed files with 17 additions and 31 deletions
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17
arch/arm64/include/asm/arch_timer.h
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@@ -104,23 +104,6 @@ static inline void arch_timer_set_cntkctl(u32 cntkctl)
asm volatile("msr cntkctl_el1, %0" : : "r" (cntkctl));
}
static inline void arch_counter_set_user_access(void)
{
u32 cntkctl = arch_timer_get_cntkctl();
/* Disable user access to the timers and the physical counter */
/* Also disable virtual event stream */
cntkctl &= ~(ARCH_TIMER_USR_PT_ACCESS_EN
| ARCH_TIMER_USR_VT_ACCESS_EN
| ARCH_TIMER_VIRT_EVT_EN
| ARCH_TIMER_USR_PCT_ACCESS_EN);
/* Enable user access to the virtual counter */
cntkctl |= ARCH_TIMER_USR_VCT_ACCESS_EN;
arch_timer_set_cntkctl(cntkctl);
}
static inline void arch_timer_evtstrm_enable(int divider)
{
u32 cntkctl = arch_timer_get_cntkctl();