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| author |   Marc Zyngier <maz@kernel.org> | 2021-10-17 13:42:11 +0100 |
|---|---|---|
| committer |   Daniel Lezcano <daniel.lezcano@linaro.org> | 2021-10-17 21:46:59 +0200 |
| commit | 1e8d929231cf7b397101c5e6aaaa3d9bc9832f10 (patch) | |
| tree | 9f6b4f811b9dee858fefd5e4c58a5e2feec03789 /arch/arm/include/asm | |
| parent | clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors (diff) | |
| download | linux-dev-1e8d929231cf7b397101c5e6aaaa3d9bc9832f10.tar.xz linux-dev-1e8d929231cf7b397101c5e6aaaa3d9bc9832f10.zip | |
clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64
The various accessors for the timer sysreg and MMIO registers are
currently hardwired to 32bit. However, we are about to introduce
the use of the CVAL registers, which require a 64bit access.
Upgrade the write side of the accessors to take a 64bit value
(the read side is left untouched as we don't plan to ever read
back any of these registers).
No functional change expected.
Reviewed-by: Oliver Upton <oupton@google.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211017124225.3018098-4-maz@kernel.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/arch_timer.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm/include/asm/arch_timer.h b/arch/arm/include/asm/arch_timer.h index 7d757085c61a..1482e70da7d3 100644 --- a/arch/arm/include/asm/arch_timer.h +++ b/arch/arm/include/asm/arch_timer.h @@ -24,15 +24,15 @@ int arch_timer_arch_init(void); * the code. At least it does so with a recent GCC (4.6.3). */ static __always_inline -void arch_timer_reg_write_cp15(int access, enum arch_timer_reg reg, u32 val) +void arch_timer_reg_write_cp15(int access, enum arch_timer_reg reg, u64 val) { if (access == ARCH_TIMER_PHYS_ACCESS) { switch (reg) { case ARCH_TIMER_REG_CTRL: - asm volatile("mcr p15, 0, %0, c14, c2, 1" : : "r" (val)); + asm volatile("mcr p15, 0, %0, c14, c2, 1" : : "r" ((u32)val)); break; case ARCH_TIMER_REG_TVAL: - asm volatile("mcr p15, 0, %0, c14, c2, 0" : : "r" (val)); + asm volatile("mcr p15, 0, %0, c14, c2, 0" : : "r" ((u32)val)); break; default: BUILD_BUG(); @@ -40,10 +40,10 @@ void arch_timer_reg_write_cp15(int access, enum arch_timer_reg reg, u32 val) } else if (access == ARCH_TIMER_VIRT_ACCESS) { switch (reg) { case ARCH_TIMER_REG_CTRL: - asm volatile("mcr p15, 0, %0, c14, c3, 1" : : "r" (val)); + asm volatile("mcr p15, 0, %0, c14, c3, 1" : : "r" ((u32)val)); break; case ARCH_TIMER_REG_TVAL: - asm volatile("mcr p15, 0, %0, c14, c3, 0" : : "r" (val)); + asm volatile("mcr p15, 0, %0, c14, c3, 0" : : "r" ((u32)val)); break; default: BUILD_BUG(); |