From patchwork Fri Jan 17 12:24:59 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanjun Guo X-Patchwork-Id: 3503901 Return-Path: X-Original-To: patchwork-linux-acpi@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 DCCCC9F169 for ; Fri, 17 Jan 2014 12:34:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1631020170 for ; Fri, 17 Jan 2014 12:34:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C6E32015D for ; Fri, 17 Jan 2014 12:34:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752357AbaAQMeR (ORCPT ); Fri, 17 Jan 2014 07:34:17 -0500 Received: from mail-pb0-f47.google.com ([209.85.160.47]:59611 "EHLO mail-pb0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752125AbaAQMeQ (ORCPT ); Fri, 17 Jan 2014 07:34:16 -0500 Received: by mail-pb0-f47.google.com with SMTP id um1so4038946pbc.6 for ; Fri, 17 Jan 2014 04:34:16 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=XBr8DYc/EBRtywzuC4zp6pwsZ9ODGMCPtOJZ1yL2tYg=; b=OEPPlZCWo0ee/HtNNr7GX0pHCH+sb8lwLTSw6VOuCBEgRGiHWG0UhjihLSjZVz24Wa EycGFHyRBs2XObjZE7yoJnBPEzRbs9ZpNFT0PO29qL2ZqUw7LiS6LRLJ/W0V4ZA/XJM6 ndAnxAeZP66pu/SeciSVinOnP/o3VSit3945otkoyhZ4CHEDfy7yrTNQOD5f/IJS+NvA 5WMpmOL5lVFUtncxwHT4eRn8AOyn1esLC5XMtFuWKTHO0S6D5VBllrAJLVnJLpejCZeh V8Cu0k1xXexqhHWWkCrGCn3w/Cs+HG1nXccEIFe2xrobTVjhlqBD88czY5MwXkWsARgK LB4w== X-Gm-Message-State: ALoCoQmF+KwmJMKEMcCgiI2FnNDnMw5Tt7TQKjWL5Dq5YlMjQ6q0d3oeShpf6k0oeH09AwUSnmss X-Received: by 10.68.168.162 with SMTP id zx2mr1900975pbb.74.1389962056506; Fri, 17 Jan 2014 04:34:16 -0800 (PST) Received: from localhost ([218.17.215.175]) by mx.google.com with ESMTPSA id lh13sm30268704pab.4.2014.01.17.04.33.32 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 17 Jan 2014 04:34:15 -0800 (PST) From: Hanjun Guo To: "Rafael J. Wysocki" , Catalin Marinas , Will Deacon , Russell King - ARM Linux Cc: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Grant Likely , Matthew Garrett , Olof Johansson , Linus Walleij , Bjorn Helgaas , Rob Herring , Mark Rutland , Arnd Bergmann , patches@linaro.org, linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, linaro-acpi@lists.linaro.org, Charles.Garcia-Tobin@arm.com, Hanjun Guo , Graeme Gregory Subject: [PATCH 05/20] ARM64 / ACPI: Introduce lowlevel suspend function Date: Fri, 17 Jan 2014 20:24:59 +0800 Message-Id: <1389961514-13562-6-git-send-email-hanjun.guo@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1389961514-13562-1-git-send-email-hanjun.guo@linaro.org> References: <1389961514-13562-1-git-send-email-hanjun.guo@linaro.org> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_WEB, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 Lowlevel suspend function is needed for ACPI based suspend/resume, introduce ARM related lowlevel function in this patch. Signed-off-by: Graeme Gregory Signed-off-by: Hanjun Guo --- arch/arm64/include/asm/acpi.h | 4 ++++ drivers/acpi/plat/arm-core.c | 7 +++++++ 2 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 908d71b..e108d9c 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -79,6 +79,10 @@ void arch_fix_phys_package_id(int num, u32 slot); /* temperally define -1 to make acpi core compilerable */ #define cpu_physical_id(cpu) -1 +/* Low-level suspend routine. */ +extern int (*acpi_suspend_lowlevel)(void); +#define acpi_wakeup_address (0) + #else /* !CONFIG_ACPI */ #define acpi_disabled 1 /* ACPI sometimes enabled on ARM */ #define acpi_noirq 1 /* ACPI sometimes enabled on ARM */ diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c index 162a1ab..3c8521d 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -207,3 +207,10 @@ static int __init parse_acpi(char *arg) return 0; } early_param("acpi", parse_acpi); + +/* + * acpi_suspend_lowlevel() - save kernel state and suspend. + * + * TBD when ARM/ARM64 starts to support suspend... + */ +int (*acpi_suspend_lowlevel)(void);