From: Lukasz Luba <l.luba@partner.samsung.com>
To: linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org
Cc: tjakobi@math.uni-bielefeld.de, myungjoo.ham@samsung.com,
kyungmin.park@samsung.com, cw00.choi@samsung.com,
rjw@rjwysocki.net, len.brown@intel.com, pavel@ucw.cz,
gregkh@linuxfoundation.org, keescook@chromium.org,
anton@enomsg.org, ccross@android.com, tony.luck@intel.com,
robh+dt@kernel.org, mark.rutland@arm.com, kgene@kernel.org,
krzk@kernel.org, m.szyprowski@samsung.com,
b.zolnierkie@samsung.com,
Lukasz Luba <l.luba@partner.samsung.com>
Subject: [PATCH v2 4/5] drivers: power: suspend: call devfreq suspend/resume
Date: Mon, 3 Dec 2018 15:31:14 +0100 [thread overview]
Message-ID: <1543847475-7600-5-git-send-email-l.luba@partner.samsung.com> (raw)
In-Reply-To: <1543847475-7600-1-git-send-email-l.luba@partner.samsung.com>
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 <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
---
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
next prev parent reply other threads:[~2018-12-03 14:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20181203143127eucas1p2604fc066139a32fdffe996212b42b40e@eucas1p2.samsung.com>
2018-12-03 14:31 ` [PATCH v2 0/5] devfreq: handle suspend/resume Lukasz Luba
[not found] ` <CGME20181203143129eucas1p2955b6becc60ee57110cbc52f6e4f60c5@eucas1p2.samsung.com>
2018-12-03 14:31 ` [PATCH v2 1/5] devfreq: refactor set_target frequency function Lukasz Luba
2018-12-04 4:39 ` Chanwoo Choi
2018-12-04 5:43 ` Chanwoo Choi
2018-12-04 9:36 ` Lukasz Luba
[not found] ` <CGME20181203143131eucas1p217f22ac6d19682a54a57658a06980914@eucas1p2.samsung.com>
2018-12-03 14:31 ` [PATCH v2 2/5] devfreq: add support for suspend/resume of a devfreq device Lukasz Luba
2018-12-04 5:36 ` Chanwoo Choi
2018-12-04 5:43 ` Chanwoo Choi
2018-12-04 6:10 ` Chanwoo Choi
2018-12-04 9:53 ` Lukasz Luba
2018-12-05 0:09 ` Chanwoo Choi
2018-12-05 11:07 ` Lukasz Luba
2018-12-04 9:39 ` Lukasz Luba
2018-12-09 9:00 ` Pavel Machek
[not found] ` <CGME20181203143132eucas1p128c029a7c7461e1127924a08e4a71811@eucas1p1.samsung.com>
2018-12-03 14:31 ` [PATCH v2 3/5] devfreq: add devfreq_suspend/resume() functions Lukasz Luba
2018-12-04 6:19 ` Chanwoo Choi
2018-12-04 9:44 ` Lukasz Luba
[not found] ` <CGME20181203143134eucas1p1edd70b0f4dca115f6f154555d8829427@eucas1p1.samsung.com>
2018-12-03 14:31 ` Lukasz Luba [this message]
[not found] ` <CGME20181203143135eucas1p165fe6183ae90de7906f9683cb41ff4c1@eucas1p1.samsung.com>
2018-12-03 14:31 ` [PATCH v2 5/5] arm: dts: exynos4: opp-suspend in DMC and leftbus Lukasz Luba
2018-12-03 17:22 ` Krzysztof Kozlowski
2018-12-03 17:48 ` Lukasz Luba
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