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[94.254.63.18]) by smtp.gmail.com with ESMTPSA id z7-20020a19f707000000b004f4b3e9e0cesm1781708lfe.297.2023.06.07.05.47.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Jun 2023 05:47:11 -0700 (PDT) From: Ulf Hansson To: Sudeep Holla , Cristian Marussi , Viresh Kumar , Nishanth Menon , Stephen Boyd Cc: Nikunj Kela , Prasad Sodagudi , Alexandre Torgue , Ulf Hansson , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 13/16] OPP: Extend dev_pm_opp_data with OPP provider support Date: Wed, 7 Jun 2023 14:46:25 +0200 Message-Id: <20230607124628.157465-14-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230607124628.157465-1-ulf.hansson@linaro.org> References: <20230607124628.157465-1-ulf.hansson@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230607_134714_573617_9362AC49 X-CRM114-Status: GOOD ( 17.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org To allow a dynamically added OPP to be coupled with a specific OPP provider type, let's add a new enum variable in the struct dev_pm_opp_data. Moreover, let's add support for a DEV_PM_OPP_TYPE_GENPD type, corresponding to genpd's performance states support. More precisely, this allows a genpd provider to dynamically add OPPs when a device gets attached to it, that later can be used by a consumer driver when it needs to change the performance level for its corresponding device. Signed-off-by: Ulf Hansson --- drivers/opp/core.c | 19 +++++++++++++++++++ drivers/opp/opp.h | 1 + include/linux/pm_opp.h | 7 +++++++ 3 files changed, 27 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 79b4b44ced3e..81a3418e2eaf 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1112,6 +1112,15 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, return ret; } + if (opp->provider == DEV_PM_OPP_TYPE_GENPD) { + ret = dev_pm_genpd_set_performance_state(dev, opp->level); + if (ret) { + dev_err(dev, "Failed to set performance level: %d\n", + ret); + return ret; + } + } + ret = _set_opp_bw(opp_table, opp, dev); if (ret) { dev_err(dev, "Failed to set bw: %d\n", ret); @@ -1155,6 +1164,15 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, return ret; } + if (opp->provider == DEV_PM_OPP_TYPE_GENPD) { + ret = dev_pm_genpd_set_performance_state(dev, opp->level); + if (ret) { + dev_err(dev, "Failed to set performance level: %d\n", + ret); + return ret; + } + } + ret = _set_required_opps(dev, opp_table, opp, false); if (ret) { dev_err(dev, "Failed to set required opps: %d\n", ret); @@ -1955,6 +1973,7 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev, /* populate the opp table */ new_opp->rates[0] = opp->freq; new_opp->level = opp->level; + new_opp->provider = opp->provider; tol = u_volt * opp_table->voltage_tolerance_v1 / 100; new_opp->supplies[0].u_volt = u_volt; new_opp->supplies[0].u_volt_min = u_volt - tol; diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index b15770b2305e..ee2b3bd89213 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -104,6 +104,7 @@ struct dev_pm_opp { unsigned int pstate; unsigned long *rates; unsigned int level; + enum dev_pm_opp_provider_type provider; struct dev_pm_opp_supply *supplies; struct dev_pm_opp_icc_bw *bandwidth; diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 2c6f67736579..4c40199c7728 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -26,6 +26,11 @@ enum dev_pm_opp_event { OPP_EVENT_ADJUST_VOLTAGE, }; +enum dev_pm_opp_provider_type { + DEV_PM_OPP_TYPE_NONE = 0, + DEV_PM_OPP_TYPE_GENPD, +}; + /** * struct dev_pm_opp_supply - Power supply voltage/current values * @u_volt: Target voltage in microvolts corresponding to this OPP @@ -97,11 +102,13 @@ struct dev_pm_opp_config { * @level: The performance level for the OPP. * @freq: The clock rate in Hz for the OPP. * @u_volt: The voltage in uV for the OPP. + * @provider: The type of provider for the OPP. */ struct dev_pm_opp_data { unsigned int level; unsigned long freq; unsigned long u_volt; + enum dev_pm_opp_provider_type provider; }; #if defined(CONFIG_PM_OPP)