diff options
| author | Peng Fan <peng.fan@nxp.com> | 2025-07-04 11:09:35 +0800 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2025-07-07 16:53:16 +0100 |
| commit | 76e65f7a0e0fb41d636c11b688db6393676f4bf4 (patch) | |
| tree | b7ce65e3ad3fecf71b7bef3cc15b5ea8314f621b | |
| parent | f8e656382b4aa45ae51135b72262044550224920 (diff) | |
firmware: arm_scmi: Add power management operations to SCMI bus
Introduce suspend and resume power management callbacks for `scmi_bus_type`,
modeled after `platform_pm_ops`. This enables SCMI devices on the bus to
implement their own suspend and resume behavior, allowing for more
fine-grained power control at the device level.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20250704-scmi-pm-v2-1-9316cec2f9cc@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
| -rw-r--r-- | drivers/firmware/arm_scmi/bus.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c index 1adef0389475..24e59ddf85e7 100644 --- a/drivers/firmware/arm_scmi/bus.c +++ b/drivers/firmware/arm_scmi/bus.c @@ -323,6 +323,31 @@ static struct attribute *scmi_device_attributes_attrs[] = { }; ATTRIBUTE_GROUPS(scmi_device_attributes); +static int scmi_pm_suspend(struct device *dev) +{ + const struct device_driver *drv = dev->driver; + + if (drv && drv->pm && drv->pm->suspend) + return drv->pm->suspend(dev); + + return 0; +} + +static int scmi_pm_resume(struct device *dev) +{ + const struct device_driver *drv = dev->driver; + + if (drv && drv->pm && drv->pm->resume) + return drv->pm->resume(dev); + + return 0; +} + +static const struct dev_pm_ops scmi_dev_pm_ops = { + .suspend = pm_sleep_ptr(scmi_pm_suspend), + .resume = pm_sleep_ptr(scmi_pm_resume), +}; + const struct bus_type scmi_bus_type = { .name = "scmi_protocol", .match = scmi_dev_match, @@ -330,6 +355,7 @@ const struct bus_type scmi_bus_type = { .remove = scmi_dev_remove, .uevent = scmi_device_uevent, .dev_groups = scmi_device_attributes_groups, + .pm = &scmi_dev_pm_ops, }; EXPORT_SYMBOL_GPL(scmi_bus_type); |