From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758617AbbGHMwM (ORCPT ); Wed, 8 Jul 2015 08:52:12 -0400 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:29386 "EHLO mx0a-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758578AbbGHMwA (ORCPT ); Wed, 8 Jul 2015 08:52:00 -0400 From: Jisheng Zhang To: , , , , , CC: , , Jisheng Zhang Subject: [PATCH v2 2/2] arm: kernel: implement cpuidle_ops with psci backend Date: Wed, 8 Jul 2015 20:51:08 +0800 Message-ID: <1436359868-6176-3-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1436359868-6176-1-git-send-email-jszhang@marvell.com> References: <1436359868-6176-1-git-send-email-jszhang@marvell.com> MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2015-07-08_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 kscore.is_bulkscore=0 kscore.compositescore=1 compositescore=0.9 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 rbsscore=0.9 spamscore=0 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1506180000 definitions=main-1507080205 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements cpuidle_ops using psci. After this patch, we can use cpuidle-arm.c with psci backend for both arm and arm64. Signed-off-by: Jisheng Zhang --- arch/arm/kernel/Makefile | 1 + arch/arm/kernel/psci_cpuidle.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 arch/arm/kernel/psci_cpuidle.c diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 3b995f5..96383d8 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -91,6 +91,7 @@ obj-$(CONFIG_ARM_VIRT_EXT) += hyp-stub.o ifeq ($(CONFIG_ARM_PSCI),y) obj-y += psci-call.o obj-$(CONFIG_SMP) += psci_smp.o +obj-$(CONFIG_CPU_IDLE) += psci_cpuidle.o endif extra-y := $(head-y) vmlinux.lds diff --git a/arch/arm/kernel/psci_cpuidle.c b/arch/arm/kernel/psci_cpuidle.c new file mode 100644 index 0000000..ae85d97 --- /dev/null +++ b/arch/arm/kernel/psci_cpuidle.c @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2015 Marvell Technology Group Ltd. + * Author: Jisheng Zhang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +#include + +static int psci_cpuidle_suspend(int cpu, unsigned long arg) +{ + return cpu_psci_cpu_suspend(arg); +} + +static int psci_cpuidle_init(struct device_node *node, int cpu) +{ + return cpu_psci_cpu_init_idle(cpu); +} + +static struct cpuidle_ops psci_cpuidle_ops __initdata = { + .suspend = psci_cpuidle_suspend, + .init = psci_cpuidle_init, +}; +CPUIDLE_METHOD_OF_DECLARE(psci_cpuidle, "psci", &psci_cpuidle_ops); -- 2.1.4