diff options
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 12 | ||||
| -rw-r--r-- | drivers/mfd/dbx500-prcmu-regs.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 4e27db841fab..a1b3464cdba3 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -904,6 +904,18 @@ bool db8500_prcmu_pending_irq(void) } /* + * This function checks if the specified cpu is in in WFI. It's usage + * makes sense only if the gic is decoupled with the db8500_prcmu_gic_decouple + * function. Of course passing smp_processor_id() to this function will + * always return false... + */ +bool db8500_prcmu_is_cpu_in_wfi(int cpu) +{ + return readl(PRCM_ARM_WFI_STANDBY) & cpu ? PRCM_ARM_WFI_STANDBY_WFI1 : + PRCM_ARM_WFI_STANDBY_WFI0; +} + +/* * This function copies the gic SPI settings to the prcmu in order to * monitor them and abort/finish the retention/off sequence or state. */ diff --git a/drivers/mfd/dbx500-prcmu-regs.h b/drivers/mfd/dbx500-prcmu-regs.h index b9ab4ce62654..3a0bf91d7780 100644 --- a/drivers/mfd/dbx500-prcmu-regs.h +++ b/drivers/mfd/dbx500-prcmu-regs.h @@ -79,6 +79,8 @@ /* ARM WFI Standby signal register */ #define PRCM_ARM_WFI_STANDBY (_PRCMU_BASE + 0x130) +#define PRCM_ARM_WFI_STANDBY_WFI0 0x08 +#define PRCM_ARM_WFI_STANDBY_WFI1 0x10 #define PRCM_IOCR (_PRCMU_BASE + 0x310) #define PRCM_IOCR_IOFORCE 0x1 |