Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751928AbaBGEgD (ORCPT ); Thu, 6 Feb 2014 23:36:03 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:14046 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751739AbaBGEf6 (ORCPT ); Thu, 6 Feb 2014 23:35:58 -0500 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Thu, 06 Feb 2014 20:34:23 -0800 From: Alexandre Courbot To: Stephen Warren , Thierry Reding , Russell King , Tomasz Figa CC: Olof Johansson , , , , , Alexandre Courbot Subject: [PATCH v2 6/6] ARM: tegra: cpuidle: use firmware for power down Date: Fri, 7 Feb 2014 13:35:06 +0900 Message-ID: <1391747706-1847-7-git-send-email-acourbot@nvidia.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1391747706-1847-1-git-send-email-acourbot@nvidia.com> References: <1391747706-1847-1-git-send-email-acourbot@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Attempt to invoke the prepare_idle() and do_idle() firmware calls to power down a CPU so an underlying firmware gets informed of the idle operation and performs it by itself if designed in such a way. Signed-off-by: Alexandre Courbot --- arch/arm/mach-tegra/cpuidle-tegra114.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c index e0b87300243d..558067ddc186 100644 --- a/arch/arm/mach-tegra/cpuidle-tegra114.c +++ b/arch/arm/mach-tegra/cpuidle-tegra114.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -45,7 +46,15 @@ static int tegra114_idle_power_down(struct cpuidle_device *dev, clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu); - cpu_suspend(0, tegra30_sleep_cpu_secondary_finish); + call_firmware_op(prepare_idle); + + switch (call_firmware_op(do_idle)) { + case -ENOSYS: + cpu_suspend(0, tegra30_sleep_cpu_secondary_finish); + break; + default: + break; + } clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu); -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/