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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2025-02-05 14:15:52 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-02-13 14:47:48 +0100 |
| commit | cd3fa304ba5c93ce57b9b55b3cd893af2be96527 (patch) | |
| tree | fdb6dc1df0ad5a263387c98de43e260118e0ebb4 /include/linux/pm_domain.h | |
| parent | 184055a9ae2b7b19f6fd6e9c0b7e1edce6930b2f (diff) | |
| download | linux-cd3fa304ba5c93ce57b9b55b3cd893af2be96527.tar.gz linux-cd3fa304ba5c93ce57b9b55b3cd893af2be96527.tar.bz2 linux-cd3fa304ba5c93ce57b9b55b3cd893af2be96527.zip | |
pmdomain: core: Introduce dev_pm_genpd_rpm_always_on()
For some usecases a consumer driver requires its device to remain power-on
from the PM domain perspective during runtime. Using dev PM qos along with
the genpd governors, doesn't work for this case as would potentially
prevent the device from being runtime suspended too.
To support these usecases, let's introduce dev_pm_genpd_rpm_always_on() to
allow consumers drivers to dynamically control the behaviour in genpd for a
device that is attached to it.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1738736156-119203-4-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/pm_domain.h')
| -rw-r--r-- | include/linux/pm_domain.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 1aab31370065..d56a78af4af1 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -261,6 +261,7 @@ struct generic_pm_domain_data { unsigned int rpm_pstate; unsigned int opp_token; bool hw_mode; + bool rpm_always_on; void *data; }; @@ -293,6 +294,7 @@ ktime_t dev_pm_genpd_get_next_hrtimer(struct device *dev); void dev_pm_genpd_synced_poweroff(struct device *dev); int dev_pm_genpd_set_hwmode(struct device *dev, bool enable); bool dev_pm_genpd_get_hwmode(struct device *dev); +int dev_pm_genpd_rpm_always_on(struct device *dev, bool on); extern struct dev_power_governor simple_qos_governor; extern struct dev_power_governor pm_domain_always_on_gov; @@ -376,6 +378,11 @@ static inline bool dev_pm_genpd_get_hwmode(struct device *dev) return false; } +static inline int dev_pm_genpd_rpm_always_on(struct device *dev, bool on) +{ + return -EOPNOTSUPP; +} + #define simple_qos_governor (*(struct dev_power_governor *)(NULL)) #define pm_domain_always_on_gov (*(struct dev_power_governor *)(NULL)) #endif |