From patchwork Fri Feb 7 04:35:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Courbot X-Patchwork-Id: 3599471 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 1544CBF418 for ; Fri, 7 Feb 2014 04:39:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5269C2012F for ; Fri, 7 Feb 2014 04:39:52 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6215F2017B for ; Fri, 7 Feb 2014 04:39:51 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WBdBu-0000KI-OZ; Fri, 07 Feb 2014 04:37:27 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WBdBR-0003cr-P7; Fri, 07 Feb 2014 04:36:57 +0000 Received: from hqemgate15.nvidia.com ([216.228.121.64]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WBdAt-0003WN-63 for linux-arm-kernel@lists.infradead.org; Fri, 07 Feb 2014 04:36:24 +0000 Received: from hqnvupgp08.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com id ; Thu, 06 Feb 2014 20:36:11 -0800 Received: from hqemhub01.nvidia.com ([172.20.12.94]) by hqnvupgp08.nvidia.com (PGP Universal service); Thu, 06 Feb 2014 20:34:23 -0800 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Thu, 06 Feb 2014 20:34:23 -0800 Received: from percival.nvidia.com (172.20.144.16) by hqemhub01.nvidia.com (172.20.150.30) with Microsoft SMTP Server (TLS) id 8.3.327.1; Thu, 6 Feb 2014 20:35:57 -0800 From: Alexandre Courbot To: Stephen Warren , Thierry Reding , Russell King , Tomasz Figa 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140206_233623_376073_8997C5BC X-CRM114-Status: GOOD ( 11.42 ) X-Spam-Score: -2.4 (--) Cc: gnurou@gmail.com, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, Alexandre Courbot , Olof Johansson , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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);