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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id w10sm1695715oic.44.2021.01.15.06.43.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Jan 2021 06:43:55 -0800 (PST) Date: Fri, 15 Jan 2021 08:43:53 -0600 From: Bjorn Andersson To: Roja Rani Yarubandi , ulf.hansson@linaro.org, viresh.kumar@linaro.org Cc: robh+dt@kernel.org, wsa@kernel.org, swboyd@chromium.org, dianders@chromium.org, saiprakash.ranjan@codeaurora.org, mka@chromium.org, akashast@codeaurora.org, msavaliy@qti.qualcomm.com, parashar@codeaurora.org, rnayak@codeaurora.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, agross@kernel.org, linux-i2c@vger.kernel.org Subject: Re: [PATCH 3/3] i2c: i2c-qcom-geni: Add support for 'assigned-performance-states' Message-ID: References: <20201224111210.1214-1-rojay@codeaurora.org> <20201224111210.1214-4-rojay@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201224111210.1214-4-rojay@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 24 Dec 05:12 CST 2020, Roja Rani Yarubandi wrote: > @@ -629,6 +658,16 @@ static int __maybe_unused geni_i2c_runtime_suspend(struct device *dev) > struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); > > disable_irq(gi2c->irq); > + > + /* Drop the assigned performance state */ > + if (gi2c->assigned_pstate) { > + ret = dev_pm_genpd_set_performance_state(dev, 0); > + if (ret) { > + dev_err(dev, "Failed to set performance state\n"); > + return ret; > + } > + } > + Ulf, Viresh, I think we discussed this at the time of introducing the performance states. The client's state does not affect if its performance_state should be included in the calculation of the aggregated performance_state, so each driver that needs to keep some minimum performance state needs to have these two snippets. Would it not make sense to on enable/disable re-evaluate the performance_state and potentially reconfigure the hardware automatically? Regards, Bjorn > ret = geni_se_resources_off(&gi2c->se); > if (ret) { > enable_irq(gi2c->irq); > @@ -654,6 +693,16 @@ static int __maybe_unused geni_i2c_runtime_resume(struct device *dev) > if (ret) > return ret; > > + /* Set the assigned performance state */ > + if (gi2c->assigned_pstate) { > + ret = dev_pm_genpd_set_performance_state(dev, > + gi2c->assigned_pstate); > + if (ret) { > + dev_err(dev, "Failed to set performance state\n"); > + return ret; > + } > + } > + > enable_irq(gi2c->irq); > gi2c->suspended = 0; > return 0; > -- > QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member > of Code Aurora Forum, hosted by The Linux Foundation >