[PATCH 1/3] ARM: introduce common set_auxcr/get_auxcr functions

[Nicolas Pitre]

On Wed, 16 Jan 2013, Rob Herring wrote:

> From: Rob Herring <rob.herring at calxeda.com>
> 
> Move the private set_auxcr/get_auxcr functions from
> drivers/cpuidle/cpuidle-calxeda.c so they can be used across platforms.
> 
> Signed-off-by: Rob Herring <rob.herring at calxeda.com>
> Cc: Russell King <linux at arm.linux.org.uk>

Acked-by: Nicolas Pitre <nico at linaro.org>

> ---
>  arch/arm/include/asm/cp15.h       |   14 ++++++++++++++
>  drivers/cpuidle/cpuidle-calxeda.c |   14 --------------
>  2 files changed, 14 insertions(+), 14 deletions(-)
> 
> diff --git a/arch/arm/include/asm/cp15.h b/arch/arm/include/asm/cp15.h
> index 5ef4d80..ef0094a 100644
> --- a/arch/arm/include/asm/cp15.h
> +++ b/arch/arm/include/asm/cp15.h
> @@ -59,6 +59,20 @@ static inline void set_cr(unsigned int val)
>  	isb();
>  }
>  
> +static inline unsigned int get_auxcr(void)
> +{
> +	unsigned int val;
> +	asm("mrc p15, 0, %0, c1, c0, 1	@ get AUXCR" : "=r" (val) : : "cc");
> +	return val;
> +}
> +
> +static inline void set_auxcr(unsigned int val)
> +{
> +	asm volatile("mcr p15, 0, %0, c1, c0, 1	@ set AUXCR"
> +	  : : "r" (val) : "cc");
> +	isb();
> +}
> +
>  #ifndef CONFIG_SMP
>  extern void adjust_cr(unsigned long mask, unsigned long set);
>  #endif
> diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
> index e1aab38..ece83d6 100644
> --- a/drivers/cpuidle/cpuidle-calxeda.c
> +++ b/drivers/cpuidle/cpuidle-calxeda.c
> @@ -37,20 +37,6 @@ extern void *scu_base_addr;
>  
>  static struct cpuidle_device __percpu *calxeda_idle_cpuidle_devices;
>  
> -static inline unsigned int get_auxcr(void)
> -{
> -	unsigned int val;
> -	asm("mrc p15, 0, %0, c1, c0, 1	@ get AUXCR" : "=r" (val) : : "cc");
> -	return val;
> -}
> -
> -static inline void set_auxcr(unsigned int val)
> -{
> -	asm volatile("mcr p15, 0, %0, c1, c0, 1	@ set AUXCR"
> -	  : : "r" (val) : "cc");
> -	isb();
> -}
> -
>  static noinline void calxeda_idle_restore(void)
>  {
>  	set_cr(get_cr() | CR_C);
> -- 
> 1.7.10.4
>