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But, only the ACPI path honours it today. genpd_dev_pm_attach() takes no flags and always powers on the domain, so a DT based device cannot be attached to its PM domain without powering it on. Add a power_on argument to genpd_dev_pm_attach() and pass it on to __genpd_dev_pm_attach(), which already supports it for the multiple PM domains case. Signed-off-by: Beleswar Padhi --- drivers/base/power/common.c | 5 +++-- drivers/pmdomain/core.c | 5 +++-- include/linux/pm_domain.h | 4 ++-- 3 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index 9bef9248a7052..3263659c58dc8 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -102,14 +102,15 @@ EXPORT_SYMBOL_GPL(dev_pm_put_subsys_data); */ int dev_pm_domain_attach(struct device *dev, u32 flags) { + bool power_on = !!(flags & PD_FLAG_ATTACH_POWER_ON); int ret; if (dev->pm_domain) return 0; - ret = acpi_dev_pm_attach(dev, !!(flags & PD_FLAG_ATTACH_POWER_ON)); + ret = acpi_dev_pm_attach(dev, power_on); if (!ret) - ret = genpd_dev_pm_attach(dev); + ret = genpd_dev_pm_attach(dev, power_on); if (dev->pm_domain) dev->power.detach_power_off = !!(flags & PD_FLAG_DETACH_POWER_OFF); diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c index 964e44c2f78f1..785c27491aad5 100644 --- a/drivers/pmdomain/core.c +++ b/drivers/pmdomain/core.c @@ -3553,6 +3553,7 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev, /** * genpd_dev_pm_attach - Attach a device to its PM domain using DT. * @dev: Device to attach. + * @power_on: Whether to power on the PM domain during attach. * * Parse device's OF node to find a PM domain specifier. If such is found, * attaches the device to retrieved pm_domain ops. @@ -3563,7 +3564,7 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev, * found or turned on, then return -EPROBE_DEFER to ensure that the device is * not probed and to re-try again later. */ -int genpd_dev_pm_attach(struct device *dev) +int genpd_dev_pm_attach(struct device *dev, bool power_on) { if (!dev->of_node) return 0; @@ -3576,7 +3577,7 @@ int genpd_dev_pm_attach(struct device *dev) "#power-domain-cells") != 1) return 0; - return __genpd_dev_pm_attach(dev, dev, 0, 1, true); + return __genpd_dev_pm_attach(dev, dev, 0, 1, power_on); } EXPORT_SYMBOL_GPL(genpd_dev_pm_attach); diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 14e0e346c610a..010fbfffee39d 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -481,7 +481,7 @@ int of_genpd_add_child_ids(struct device_node *np, int of_genpd_remove_child_ids(struct device_node *np, struct genpd_onecell_data *data); -int genpd_dev_pm_attach(struct device *dev); +int genpd_dev_pm_attach(struct device *dev, bool power_on); struct device *genpd_dev_pm_attach_by_id(struct device *dev, unsigned int index); struct device *genpd_dev_pm_attach_by_name(struct device *dev, @@ -527,7 +527,7 @@ static inline int of_genpd_parse_idle_states(struct device_node *dn, static inline void of_genpd_sync_state(struct device_node *np) {} -static inline int genpd_dev_pm_attach(struct device *dev) +static inline int genpd_dev_pm_attach(struct device *dev, bool power_on) { return 0; } -- 2.34.1