| Submitter | Hiroshi Doyu |
|---|---|
| Date | Jan. 22, 2013, 5:52 a.m. |
| Message ID | <1358833924-24535-1-git-send-email-hdoyu@nvidia.com> |
| Download | mbox | patch |
| Permalink | /patch/214342/ |
| State | Accepted, archived |
| Headers | show |
Comments
On 01/21/2013 10:52 PM, Hiroshi Doyu wrote:
> Add API to detect SCU base address from CP15.
I've applied these 2 patches and Santosh's OMAP followup to Tegra's
for-3.9/scu-base-rework branch.
--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Patch
diff --git a/arch/arm/include/asm/smp_scu.h b/arch/arm/include/asm/smp_scu.h index 4eb6d00..006f026 100644 --- a/arch/arm/include/asm/smp_scu.h +++ b/arch/arm/include/asm/smp_scu.h @@ -6,6 +6,23 @@ #define SCU_PM_POWEROFF 3 #ifndef __ASSEMBLER__ + +#include <asm/cputype.h> + +static inline bool scu_a9_has_base(void) +{ + return read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9; +} + +static inline unsigned long scu_a9_get_base(void) +{ + unsigned long pa; + + asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa)); + + return pa; +} + unsigned int scu_get_core_count(void __iomem *); void scu_enable(void __iomem *); int scu_power_mode(void __iomem *, unsigned int);
Add API to detect SCU base address from CP15. Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> --- Update: Use Russell's suggestion, http://lists.infradead.org/pipermail/linux-arm-kernel/2013-January/143321.html --- arch/arm/include/asm/smp_scu.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)