From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754383Ab3LCQiu (ORCPT ); Tue, 3 Dec 2013 11:38:50 -0500 Received: from mail-pb0-f49.google.com ([209.85.160.49]:36445 "EHLO mail-pb0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754318Ab3LCQip (ORCPT ); Tue, 3 Dec 2013 11:38:45 -0500 From: Hanjun Guo To: "Rafael J. Wysocki" , Catalin Marinas , Will Deacon , Russell King - ARM Linux , Daniel Lezcano 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 , Jon Masters , patches@linaro.org, linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, linaro-acpi@lists.linaro.org, Hanjun Guo , Graeme Gregory Subject: [RFC part1 PATCH 6/7] ARM64 / ACPI: Introduce lowlevel suspend function Date: Wed, 4 Dec 2013 00:36:50 +0800 Message-Id: <1386088611-2801-7-git-send-email-hanjun.guo@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1386088611-2801-1-git-send-email-hanjun.guo@linaro.org> References: <1386088611-2801-1-git-send-email-hanjun.guo@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 e9444e4..c830adc 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 7b8e64a..2b6df56 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -217,3 +217,10 @@ static int __init parse_acpi(char *arg) return 0; } early_param("acpi", parse_acpi); + +/* + * acpi_suspend_lowlevel() - save kernel state and suspend. + * + * TBD when when ARM/ARM64 starts to support suspend... + */ +int (*acpi_suspend_lowlevel)(void); -- 1.7.9.5