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Tue, 12 Feb 2019 22:24:33 +0000 (GMT) From: Lukasz Luba To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: b.zolnierkie@samsung.com, myungjoo.ham@samsung.com, cw00.choi@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, s.nawrocki@samsung.com, tkjos@google.com, joel@joelfernandes.org, chris.diamand@arm.com, mka@chromium.org, rostedt@goodmis.org, mingo@redhat.com, Lukasz Luba Subject: [PATCH v3 4/7] include: devfreq: add polling_idle_ms to 'profile' Date: Tue, 12 Feb 2019 23:23:55 +0100 Message-Id: <1550010238-24002-5-git-send-email-l.luba@partner.samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1550010238-24002-1-git-send-email-l.luba@partner.samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrAKsWRmVeSWpSXmKPExsWy7djP87qL3ZNjDL49FbPYOGM9q8W0T5dZ LK5/ec5qsaxB1eJs0xt2i1sNMhaXd81hs/jce4TRYu2Ru+wWlw4sYLL4vOExo8XtxhVsFvs6 HjBZHH7TzmrxfnKxA7/HmnlrGD1mN1xk8WjZd4vdY8GmUo+Fn76yehx8t4fJ4/2+q2wefVtW MXp83iQXwBnFZZOSmpNZllqkb5fAlbF82UPGgpXcFQv2vWdrYJzM2cXIySEhYCLx8cVB1i5G Lg4hgRWMEu+2nmaGcL4wShy4fYoRwvnMKPGh8z8zTMvZIyehqpYzSnz9fYYdruXyw1dAwzg4 2AT0JHasKgRpEBGwknjR/gqshlngGJPEp71TmEFqhAW8JB61soLUsAioSuw/2QS2gBcovPbJ AVaIZXISN891gsU5BbwlzkxbCXarhMA+donGSR3sEEUuEpNutbFB2MISr45vgYrLSPzfOZ8J wi6WONuxCqqmRqL95A6oGmuJw8cvgt3MLKApsX6XPogpIeAocfajNoTJJ3HjrSBIMTOQOWnb dGaIMK9ER5sQxAwNiS09F6D2iEksXzONHaLEQ6JhSQAkbOYxSuy+c5V5AqP8LIRVCxgZVzGK p5YW56anFhvlpZbrFSfmFpfmpesl5+duYgSmo9P/jn/ZwbjrT9IhRgEORiUe3hVHk2KEWBPL iitzDzFKcDArifB62iTHCPGmJFZWpRblxxeV5qQWH2KU5mBREuetZngQLSSQnliSmp2aWpBa BJNl4uCUamCcEO7Zflei3OJFHXerwOP61kb3t3sVy8PeRtnfUHzFbT7fj3ON778Pm1zCeOKr X6ULLtlwNkfN5Ob0rNyiFfeOS0dmNL6esnpa5tKudm1mLV71I65MZ4W2XOVcYxgz7fm77s61 T21D1m76cvSDi/j11GTZCUu2ecRIXHesd3qQcv30+Untgt+VWIozEg21mIuKEwFY3ZysQwMA AA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprEIsWRmVeSWpSXmKPExsVy+t/xu7qL3JNjDPadlrXYOGM9q8W0T5dZ LK5/ec5qsaxB1eJs0xt2i1sNMhaXd81hs/jce4TRYu2Ru+wWlw4sYLL4vOExo8XtxhVsFvs6 HjBZHH7TzmrxfnKxA7/HmnlrGD1mN1xk8WjZd4vdY8GmUo+Fn76yehx8t4fJ4/2+q2wefVtW MXp83iQXwBmlZ1OUX1qSqpCRX1xiqxRtaGGkZ2hpoWdkYqlnaGwea2VkqqRvZ5OSmpNZllqk b5egl7F82UPGgpXcFQv2vWdrYJzM2cXIySEhYCJx9shJ5i5GLg4hgaWMEg+ftLJCJMQkJu3b zg5hC0v8udbFBmILCXxilHh1iauLkYODTUBPYseqQpCwiICNxPu5Z1hA5jALXGOSuN1xnxWk RljAS+IRxEgWAVWJ/SebmEFsXqDw2icHoFbJSdw81wkW5xTwljgzbSVYqxBQTdNBgwmMfAsY GVYxiqSWFuem5xYb6hUn5haX5qXrJefnbmIExse2Yz8372C8tDH4EKMAB6MSD++Ko0kxQqyJ ZcWVuYcYJTiYlUR4PW2SY4R4UxIrq1KL8uOLSnNSiw8xmgLdNJFZSjQ5Hxi7eSXxhqaG5haW hubG5sZmFkrivOcNKqOEBNITS1KzU1MLUotg+pg4OKUaGMs5ohWirrHJznr8LOSrgXi19WIT tU9nSqprv7lxLGFNirYrZq47xurf+M63Zn6kp6Xu1ifF5nm9y3tZH9/c8LLJvOZ8g1TD62k3 s7696Tkm5Cue68d/WmOL+S9Rt6PC+8s8zl9zFIpfxzmh1THlyrZDczhCnoo3rbjpcUzKv0Jo NUu6T99OJZbijERDLeai4kQAN1Qbh6UCAAA= X-CMS-MailID: 20190212222434eucas1p134dcdce827df19704c698fd6452b0a06 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20190212222434eucas1p134dcdce827df19704c698fd6452b0a06 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190212222434eucas1p134dcdce827df19704c698fd6452b0a06 References: <1550010238-24002-1-git-send-email-l.luba@partner.samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add needed fields to support new state: idle, where different polling interval is in use. It provides better control of the devfreq device and lower the power consumption when the device is not busy. Signed-off-by: Lukasz Luba --- include/linux/devfreq.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index fbffa74..5140970 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -72,6 +72,11 @@ struct devfreq_dev_status { * @initial_freq: The operating frequency when devfreq_add_device() is * called. * @polling_ms: The polling interval in ms. 0 disables polling. + * @polling_idle_ms: The polling interval in 'idle state' in ms. + * When the device is running at lowest frequency and has + * low-load, it is considered as in 'idle state'. + * Thus, longer polling interval is used for the device + * to save some power. * @target: The device should set its operating frequency at * freq or lowest-upper-than-freq value. If freq is * higher than any operable frequency, set maximum. @@ -98,6 +103,7 @@ struct devfreq_dev_status { struct devfreq_dev_profile { unsigned long initial_freq; unsigned int polling_ms; + unsigned int polling_idle_ms; int (*target)(struct device *dev, unsigned long *freq, u32 flags); int (*get_dev_status)(struct device *dev, -- 2.7.4