diff options
| author | Peng Fan <peng.fan@nxp.com> | 2025-09-22 10:21:06 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-11-19 18:06:49 +0100 |
| commit | 4acbfb6c116be5989d5a0e38a48deca2d5b8bb92 (patch) | |
| tree | 46d78758af8f2f21feaf46406d4ab174c294b40e /drivers/base/power/main.c | |
| parent | 35cfef3ccb8654489d0b962260e8bbdb4b2665e0 (diff) | |
PM: wakeup: Add out-of-band system wakeup support for devices
Some devices can wake up the system from suspend even when their power
domains are turned off. This is possible because their system-wakeup logic
resides in an always-on power domain - indicating that they support
out-of-band system wakeup.
Currently, PM domain core doesn't power off such devices if they are marked
as system wakeup sources. To better represent devices with out-of-band
wakeup capability, this patch introduces a new flag out_band_wakeup in
'struct dev_pm_info'.
Two helper APIs are added:
- device_set_out_band_wakeup() - to mark a device as having out-of-band
wakeup capability.
- device_out_band_wakeup() - to query the flag.
Allow the PM core and drivers to distinguish between regular and
out-of-band wakeup sources, enable more accurate power management decision.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/base/power/main.c')
| -rw-r--r-- | drivers/base/power/main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index e83503bdc1fd..bcfb170baca6 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -2126,6 +2126,7 @@ static int device_prepare(struct device *dev, pm_message_t state) device_lock(dev); dev->power.wakeup_path = false; + dev->power.out_band_wakeup = false; if (dev->power.no_pm_callbacks) goto unlock; |