diff options
Diffstat (limited to 'arch/arm/mach-omap2/pm44xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm44xx.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c index d4c754d..fbf6e5d 100644 --- a/arch/arm/mach-omap2/pm44xx.c +++ b/arch/arm/mach-omap2/pm44xx.c @@ -515,6 +515,24 @@ static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id) } /** + * omap_default_idle() - implement a default idle for !CONFIG_CPUIDLE + * + * Implements OMAP4 memory, IO ordering requirements which can't be addressed + * with default arch_idle() hook. Used by all CPUs with !CONFIG_CPUIDLE and + * by secondary CPU with CONFIG_CPUIDLE. + */ +static void omap_default_idle(void) +{ + local_irq_disable(); + local_fiq_disable(); + + omap_do_wfi(); + + local_fiq_enable(); + local_irq_enable(); +} + +/** * omap4_pm_init - Init routine for OMAP4 PM * * Initializes all powerdomain and clockdomain target states @@ -632,6 +650,9 @@ static int __init omap4_pm_init(void) /* Enable wakeup for PRCM IRQ for system wide suspend */ enable_irq_wake(OMAP44XX_IRQ_PRCM); + /* Overwrite the default arch_idle() */ + pm_idle = omap_default_idle; + omap4_idle_init(); err2: |