From patchwork Mon Jul 22 15:37:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11052733 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4E8981398 for ; Mon, 22 Jul 2019 15:38:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3DAF02847B for ; Mon, 22 Jul 2019 15:38:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2FEDB2853C; Mon, 22 Jul 2019 15:38:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A3E262847B for ; Mon, 22 Jul 2019 15:38:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729583AbfGVPiB (ORCPT ); Mon, 22 Jul 2019 11:38:01 -0400 Received: from foss.arm.com ([217.140.110.172]:39784 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729472AbfGVPiA (ORCPT ); Mon, 22 Jul 2019 11:38:00 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id F2D381509; Mon, 22 Jul 2019 08:37:59 -0700 (PDT) Received: from e121166-lin.cambridge.arm.com (unknown [10.1.196.255]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 83A453F694; Mon, 22 Jul 2019 08:37:58 -0700 (PDT) From: Lorenzo Pieralisi To: linux-pm@vger.kernel.org Cc: Lorenzo Pieralisi , Will Deacon , Ulf Hansson , Sudeep Holla , Daniel Lezcano , Catalin Marinas , Mark Rutland , "Rafael J. Wysocki" , LKML , LAKML Subject: [PATCH 5/6] ARM: psci: cpuidle: Enable PSCI CPUidle driver Date: Mon, 22 Jul 2019 16:37:44 +0100 Message-Id: <20190722153745.32446-6-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190722153745.32446-1-lorenzo.pieralisi@arm.com> References: <20190722153745.32446-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Allow selection of the PSCI CPUidle in the kernel by adding the required Kconfig options. Remove PSCI callbacks from ARM/ARM64 generic CPU ops to prevent the PSCI idle driver from clashing with the generic ARM CPUidle driver initialization, that relies on CPU ops to initialize and enter idle states. Update the affected defconfig files to guarantee seamingless transition from the generic ARM CPUidle to the PSCI CPUidle driver on arch/platforms using it. Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Ulf Hansson Cc: Sudeep Holla Cc: Daniel Lezcano Cc: Catalin Marinas Cc: Mark Rutland Cc: "Rafael J. Wysocki" --- arch/arm/configs/imx_v6_v7_defconfig | 1 + arch/arm64/configs/defconfig | 1 + arch/arm64/kernel/cpuidle.c | 7 ++++--- arch/arm64/kernel/psci.c | 4 ---- drivers/cpuidle/Kconfig.arm | 8 ++++++-- drivers/firmware/psci/psci.c | 9 --------- 6 files changed, 12 insertions(+), 18 deletions(-) diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index a53b29251ed4..4174fd1b79e7 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -60,6 +60,7 @@ CONFIG_ARM_IMX6Q_CPUFREQ=y CONFIG_ARM_IMX_CPUFREQ_DT=y CONFIG_CPU_IDLE=y CONFIG_ARM_CPUIDLE=y +CONFIG_ARM_PSCI_CPUIDLE=y CONFIG_VFP=y CONFIG_NEON=y CONFIG_PM_DEBUG=y diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 0e58ef02880c..c0a7cfe3aebd 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -72,6 +72,7 @@ CONFIG_RANDOMIZE_BASE=y CONFIG_HIBERNATION=y CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y CONFIG_ARM_CPUIDLE=y +CONFIG_ARM_PSCI_CPUIDLE=y CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_STAT=y CONFIG_CPU_FREQ_GOV_POWERSAVE=m diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c index d1048173fd8a..4bcd1bca0dfc 100644 --- a/arch/arm64/kernel/cpuidle.c +++ b/arch/arm64/kernel/cpuidle.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -48,15 +49,15 @@ int arm_cpuidle_suspend(int index) int acpi_processor_ffh_lpi_probe(unsigned int cpu) { - return arm_cpuidle_init(cpu); + return psci_acpi_cpu_init_idle(cpu); } int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi) { if (ARM64_LPI_IS_RETENTION_STATE(lpi->arch_flags)) - return CPU_PM_CPU_IDLE_ENTER_RETENTION(arm_cpuidle_suspend, + return CPU_PM_CPU_IDLE_ENTER_RETENTION(psci_cpu_suspend_enter, lpi->index); else - return CPU_PM_CPU_IDLE_ENTER(arm_cpuidle_suspend, lpi->index); + return CPU_PM_CPU_IDLE_ENTER(psci_cpu_suspend_enter, lpi->index); } #endif diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c index 85ee7d07889e..a543ab7e007c 100644 --- a/arch/arm64/kernel/psci.c +++ b/arch/arm64/kernel/psci.c @@ -105,10 +105,6 @@ static int cpu_psci_cpu_kill(unsigned int cpu) const struct cpu_operations cpu_psci_ops = { .name = "psci", -#ifdef CONFIG_CPU_IDLE - .cpu_init_idle = psci_cpu_init_idle, - .cpu_suspend = psci_cpu_suspend_enter, -#endif .cpu_init = cpu_psci_cpu_init, .cpu_prepare = cpu_psci_cpu_prepare, .cpu_boot = cpu_psci_cpu_boot, diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm index 929b57424ea4..b9c56c60ab98 100644 --- a/drivers/cpuidle/Kconfig.arm +++ b/drivers/cpuidle/Kconfig.arm @@ -14,8 +14,12 @@ config ARM_CPUIDLE provided by architecture code. config ARM_PSCI_CPUIDLE - bool - + bool "PSCI CPU idle Driver" + depends on ARM_PSCI_FW + select DT_IDLE_STATES + select CPU_IDLE_MULTIPLE_DRIVERS + help + Select this to enable PSCI firmware based CPUidle driver for ARM. config ARM_BIG_LITTLE_CPUIDLE bool "Support for ARM big.LITTLE processors" depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c index f82ccd39a913..bae734d13a52 100644 --- a/drivers/firmware/psci/psci.c +++ b/drivers/firmware/psci/psci.c @@ -436,15 +436,6 @@ int psci_cpu_suspend_enter(unsigned long index) return ret; } - -/* ARM specific CPU idle operations */ -#ifdef CONFIG_ARM -static const struct cpuidle_ops psci_cpuidle_ops __initconst = { - .suspend = psci_cpu_suspend_enter, - .init = psci_dt_cpu_init_idle, -}; - -CPUIDLE_METHOD_OF_DECLARE(psci, "psci", &psci_cpuidle_ops); #endif #endif