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authorRajendra Nayak <rnayak@codeaurora.org>2021-08-12 14:27:21 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2021-08-16 19:45:29 +0300
commitc016baf7dc58e77acdedb2c75dac2b41b77bcf70 (patch)
tree7b44948fc59588e47d051089054c73f7f812bb3a /include/linux/pm_domain.h
parent020d86fc0df8b865f6dc168d88a7c2dccabd0a9e (diff)
downloadlinux-c016baf7dc58e77acdedb2c75dac2b41b77bcf70.tar.xz
PM: domains: Add support for 'required-opps' to set default perf state
Some devices within power domains with performance states do not support DVFS, but still need to vote on a default/static state while they are active. They can express this using the 'required-opps' property in device tree, which points to the phandle of the OPP supported by the corresponding power-domains. Add support to parse this information from DT and then set the specified performance state during attach and drop it on detach. runtime suspend/resume callbacks already have logic to drop/set the vote as needed and should take care of dropping the default perf state vote on runtime suspend and restore it back on runtime resume. Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/pm_domain.h')
-rw-r--r--include/linux/pm_domain.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 21a0577305ef..67017c9390c8 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -198,6 +198,7 @@ struct generic_pm_domain_data {
struct notifier_block *power_nb;
int cpu;
unsigned int performance_state;
+ unsigned int default_pstate;
unsigned int rpm_pstate;
ktime_t next_wakeup;
void *data;