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Add pm ops for scmi_bus_type, then the scmi devices under scmi bus could have their own hooks for suspend, resume function. Signed-off-by: Peng Fan --- drivers/firmware/arm_scmi/bus.c | 45 +++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 45 insertions(+) diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bu= s.c index 1adef03894751dae9bb752b8c7f86e5d01c5d4fd..2d1ef73cb6d39ac611afa5d0008= c46515e297b93 100644 --- a/drivers/firmware/arm_scmi/bus.c +++ b/drivers/firmware/arm_scmi/bus.c @@ -323,6 +323,50 @@ static struct attribute *scmi_device_attributes_attrs[= ] =3D { }; ATTRIBUTE_GROUPS(scmi_device_attributes); =20 +#ifdef CONFIG_SUSPEND +static int scmi_pm_suspend(struct device *dev) +{ + const struct device_driver *drv =3D dev->driver; + int ret =3D 0; + + if (!drv) + return 0; + + if (drv->pm) { + if (drv->pm->suspend) + ret =3D drv->pm->suspend(dev); + } + + return ret; +} + +static int scmi_pm_resume(struct device *dev) +{ + const struct device_driver *drv =3D dev->driver; + int ret =3D 0; + + if (!drv) + return 0; + + if (drv->pm) { + if (drv->pm->resume) + ret =3D drv->pm->resume(dev); + } + + return ret; +} + +static const struct dev_pm_ops scmi_dev_pm_ops =3D { + .suspend =3D scmi_pm_suspend, + .resume =3D scmi_pm_resume, +}; +#else +static const struct dev_pm_ops scmi_dev_pm_ops =3D { + .suspend =3D NULL, + .resume =3D NULL, +}; +#endif + const struct bus_type scmi_bus_type =3D { .name =3D "scmi_protocol", .match =3D scmi_dev_match, @@ -330,6 +374,7 @@ const struct bus_type scmi_bus_type =3D { .remove =3D scmi_dev_remove, .uevent =3D scmi_device_uevent, .dev_groups =3D scmi_device_attributes_groups, + .pm =3D &scmi_dev_pm_ops, }; EXPORT_SYMBOL_GPL(scmi_bus_type); =20 --=20 2.37.1