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[82.252.135.148]) by smtp.gmail.com with ESMTPSA id s14sm20199388wme.33.2020.04.14.09.27.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Apr 2020 09:27:02 -0700 (PDT) From: Daniel Lezcano To: daniel.lezcano@linaro.org, rui.zhang@intel.com Cc: amit.kucheria@verdurent.com, "Rafael J. Wysocki" , Lorenzo Pieralisi , Sudeep Holla , linux-pm@vger.kernel.org (open list:CPU IDLE TIME MANAGEMENT FRAMEWORK), linux-kernel@vger.kernel.org (open list), linux-arm-kernel@lists.infradead.org (open list:CPUIDLE DRIVER - ARM PSCI) Subject: [PATCH v2 4/4] thermal: cpuidle: Register cpuidle cooling device Date: Tue, 14 Apr 2020 18:26:29 +0200 Message-Id: <20200414162634.1867-4-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200414162634.1867-1-daniel.lezcano@linaro.org> References: <20200414162634.1867-1-daniel.lezcano@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The cpuidle driver can be used as a cooling device by injecting idle cycles. The DT binding for the idle state added an optional When the property is set, register the cpuidle driver with the idle state node pointer as a cooling device. The thermal framework will do the association automatically with the thermal zone via the cooling-device defined in the device tree cooling-maps section. Signed-off-by: Daniel Lezcano --- drivers/cpuidle/cpuidle-arm.c | 5 +++++ drivers/cpuidle/cpuidle-psci.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c index 9e5156d39627..2406ac0ae134 100644 --- a/drivers/cpuidle/cpuidle-arm.c +++ b/drivers/cpuidle/cpuidle-arm.c @@ -8,6 +8,7 @@ #define pr_fmt(fmt) "CPUidle arm: " fmt +#include #include #include #include @@ -124,6 +125,10 @@ static int __init arm_idle_init_cpu(int cpu) if (ret) goto out_kfree_drv; + ret = cpuidle_cooling_register(drv); + if (ret) + pr_err("Failed to register the idle cooling device: %d\n", ret); + return 0; out_kfree_drv: diff --git a/drivers/cpuidle/cpuidle-psci.c b/drivers/cpuidle/cpuidle-psci.c index edd7a54ef0d3..8e805bff646f 100644 --- a/drivers/cpuidle/cpuidle-psci.c +++ b/drivers/cpuidle/cpuidle-psci.c @@ -9,6 +9,7 @@ #define pr_fmt(fmt) "CPUidle PSCI: " fmt #include +#include #include #include #include @@ -305,6 +306,10 @@ static int __init psci_idle_init_cpu(int cpu) if (ret) goto out_kfree_drv; + ret = cpuidle_cooling_register(drv); + if (ret) + pr_err("Failed to register the idle cooling device: %d\n", ret); + return 0; out_kfree_drv: -- 2.17.1