From patchwork Wed Jul 3 09:50:40 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Lo X-Patchwork-Id: 2815891 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 09EED9F755 for ; Wed, 3 Jul 2013 09:55:06 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D19B22010A for ; Wed, 3 Jul 2013 09:55:04 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A23EA200D7 for ; Wed, 3 Jul 2013 09:55:02 +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 1UuJja-0008M1-42; Wed, 03 Jul 2013 09:52:22 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UuJj6-0006FJ-RA; Wed, 03 Jul 2013 09:51:52 +0000 Received: from hqemgate03.nvidia.com ([216.228.121.140]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UuJii-000696-VJ for linux-arm-kernel@lists.infradead.org; Wed, 03 Jul 2013 09:51:30 +0000 Received: from hqnvupgp08.nvidia.com (Not Verified[216.228.121.13]) by hqemgate03.nvidia.com id ; Wed, 03 Jul 2013 02:58:37 -0700 Received: from hqemhub01.nvidia.com ([172.20.12.94]) by hqnvupgp08.nvidia.com (PGP Universal service); Wed, 03 Jul 2013 02:50:53 -0700 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Wed, 03 Jul 2013 02:50:53 -0700 Received: from jlo-ubuntu-64.nvidia.com (172.20.144.16) by hqemhub01.nvidia.com (172.20.150.30) with Microsoft SMTP Server (TLS) id 8.3.298.1; Wed, 3 Jul 2013 02:51:11 -0700 From: Joseph Lo To: Stephen Warren Subject: [PATCH V2 04/11] ARM: tegra114: add low level support code for cluster power down Date: Wed, 3 Jul 2013 17:50:40 +0800 Message-ID: <1372845047-25147-5-git-send-email-josephl@nvidia.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1372845047-25147-1-git-send-email-josephl@nvidia.com> References: <1372845047-25147-1-git-send-email-josephl@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-20130703_055129_225341_C7F26603 X-CRM114-Status: UNSURE ( 9.72 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -6.9 (------) Cc: linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Joseph Lo 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=-4.2 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 When the CPU cluster power down, the vGIC is powered down too. The flow controller needs to monitor the legacy interrupt controller to wake up CPU. So setting up the appropriate wake up event in flow controller. Signed-off-by: Joseph Lo --- V2: * no change --- arch/arm/mach-tegra/flowctrl.h | 2 ++ arch/arm/mach-tegra/sleep-tegra30.S | 6 +++++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-tegra/flowctrl.h b/arch/arm/mach-tegra/flowctrl.h index e56a950..de0acb9 100644 --- a/arch/arm/mach-tegra/flowctrl.h +++ b/arch/arm/mach-tegra/flowctrl.h @@ -28,6 +28,8 @@ #define FLOW_CTRL_SCLK_RESUME (1 << 27) #define FLOW_CTRL_HALT_CPU_IRQ (1 << 10) #define FLOW_CTRL_HALT_CPU_FIQ (1 << 8) +#define FLOW_CTRL_HALT_LIC_IRQ (1 << 11) +#define FLOW_CTRL_HALT_LIC_FIQ (1 << 10) #define FLOW_CTRL_HALT_GIC_IRQ (1 << 9) #define FLOW_CTRL_HALT_GIC_FIQ (1 << 8) #define FLOW_CTRL_CPU0_CSR 0x8 diff --git a/arch/arm/mach-tegra/sleep-tegra30.S b/arch/arm/mach-tegra/sleep-tegra30.S index 6744161..ecad4ea 100644 --- a/arch/arm/mach-tegra/sleep-tegra30.S +++ b/arch/arm/mach-tegra/sleep-tegra30.S @@ -175,8 +175,12 @@ tegra30_enter_sleep: orr r0, r0, #FLOW_CTRL_CSR_ENABLE str r0, [r6, r2] + tegra_get_soc_id TEGRA_APB_MISC_BASE, r10 + cmp r10, #TEGRA30 mov r0, #FLOW_CTRL_WAIT_FOR_INTERRUPT - orr r0, r0, #FLOW_CTRL_HALT_CPU_IRQ | FLOW_CTRL_HALT_CPU_FIQ + orreq r0, r0, #FLOW_CTRL_HALT_CPU_IRQ | FLOW_CTRL_HALT_CPU_FIQ + orrne r0, r0, #FLOW_CTRL_HALT_LIC_IRQ | FLOW_CTRL_HALT_LIC_FIQ + cpu_to_halt_reg r2, r1 str r0, [r6, r2] dsb