From mboxrd@z Thu Jan 1 00:00:00 1970 From: hanjun.guo@linaro.org (Hanjun Guo) Date: Fri, 17 Jan 2014 20:24:59 +0800 Subject: [PATCH 05/20] ARM64 / ACPI: Introduce lowlevel suspend function In-Reply-To: <1389961514-13562-1-git-send-email-hanjun.guo@linaro.org> References: <1389961514-13562-1-git-send-email-hanjun.guo@linaro.org> Message-ID: <1389961514-13562-6-git-send-email-hanjun.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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 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); -- 1.7.9.5