[PATCH v2 4/5] drivers: power: suspend: call devfreq suspend/resume
From: Lukasz Luba <hidden>
Date: 2018-12-03 14:31:41
Also in:
linux-devicetree, linux-pm, linux-samsung-soc, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, hibernation (aka software suspend, aka swsusp), power management core, suspend to ram, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
Devfreq framework supports suspend of its devices. Call the the devfreq interface and allow devfreq devices preserve/restore their states during suspend/resume. The patch is based on earlier work by Tobias Jakobi. Suggested-by: Tobias Jakobi <redacted> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Lukasz Luba <redacted> --- drivers/base/power/main.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index a690fd4..0992e67 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c@@ -32,6 +32,7 @@ #include <trace/events/power.h> #include <linux/cpufreq.h> #include <linux/cpuidle.h> +#include <linux/devfreq.h> #include <linux/timer.h> #include "../base.h"
@@ -1078,6 +1079,7 @@ void dpm_resume(pm_message_t state) dpm_show_time(starttime, state, 0, NULL); cpufreq_resume(); + devfreq_resume(); trace_suspend_resume(TPS("dpm_resume"), state.event, false); }
@@ -1852,6 +1854,7 @@ int dpm_suspend(pm_message_t state) trace_suspend_resume(TPS("dpm_suspend"), state.event, true); might_sleep(); + devfreq_suspend(); cpufreq_suspend(); mutex_lock(&dpm_list_mtx);
--
2.7.4
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