Messages in this thread | | | From | Peng Fan <> | Subject | RE: [PATCH] PM: sleep: Add helpers to allow a device to remain powered-on | Date | Thu, 17 Aug 2023 09:40:21 +0000 |
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> Subject: [PATCH] PM: sleep: Add helpers to allow a device to remain > powered-on > > On some platforms a device and its corresponding PM domain, may need to > remain powered-on during system wide suspend, to support various use > cases. > For example, when the console_suspend_enabled flag is unset for a serial > controller, the corresponding device may need to remain powered on. > Other use cases exists too. > > In fact, we already have the mechanism in the PM core to deal with these > kind of use cases. However, the current naming of the corresponding > functions/flags clearly suggests these should be use for system wakeup. > See device_wakeup_path(), device_set_wakeup_path and > dev->power.wakeup_path. > > As a way to extend the use of the existing mechanism, let's introduce two > new helpers functions, device_awake_path() and device_set_awake_path(). > At this point, let them act as wrappers of the existing functions. Ideally, > when all users have been converted to use the new helpers, we may decide > to drop the old ones and rename the flag. > > Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
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