diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/domain.c | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 92b750b865d5..52d292617401 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1363,41 +1363,60 @@ static void genpd_complete(struct device *dev) genpd_unlock(genpd); } -/** - * genpd_syscore_switch - Switch power during system core suspend or resume. - * @dev: Device that normally is marked as "always on" to switch power for. - * - * This routine may only be called during the system core (syscore) suspend or - * resume phase for devices whose "always on" flags are set. - */ -static void genpd_syscore_switch(struct device *dev, bool suspend) +static void genpd_switch_state(struct device *dev, bool suspend) { struct generic_pm_domain *genpd; + bool use_lock; genpd = dev_to_genpd_safe(dev); if (!genpd) return; + use_lock = genpd_is_irq_safe(genpd); + + if (use_lock) + genpd_lock(genpd); + if (suspend) { genpd->suspended_count++; - genpd_sync_power_off(genpd, false, 0); + genpd_sync_power_off(genpd, use_lock, 0); } else { - genpd_sync_power_on(genpd, false, 0); + genpd_sync_power_on(genpd, use_lock, 0); genpd->suspended_count--; } + + if (use_lock) + genpd_unlock(genpd); } -void pm_genpd_syscore_poweroff(struct device *dev) +/** + * dev_pm_genpd_suspend - Synchronously try to suspend the genpd for @dev + * @dev: The device that is attached to the genpd, that can be suspended. + * + * This routine should typically be called for a device that needs to be + * suspended during the syscore suspend phase. It may also be called during + * suspend-to-idle to suspend a corresponding CPU device that is attached to a + * genpd. + */ +void dev_pm_genpd_suspend(struct device *dev) { - genpd_syscore_switch(dev, true); + genpd_switch_state(dev, true); } -EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweroff); +EXPORT_SYMBOL_GPL(dev_pm_genpd_suspend); -void pm_genpd_syscore_poweron(struct device *dev) +/** + * dev_pm_genpd_resume - Synchronously try to resume the genpd for @dev + * @dev: The device that is attached to the genpd, which needs to be resumed. + * + * This routine should typically be called for a device that needs to be resumed + * during the syscore resume phase. It may also be called during suspend-to-idle + * to resume a corresponding CPU device that is attached to a genpd. + */ +void dev_pm_genpd_resume(struct device *dev) { - genpd_syscore_switch(dev, false); + genpd_switch_state(dev, false); } -EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweron); +EXPORT_SYMBOL_GPL(dev_pm_genpd_resume); #else /* !CONFIG_PM_SLEEP */ |