From e0fa975d85b2ec300b3d69f08bc4933f79316651 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 30 Sep 2014 02:25:42 +0200 Subject: [PATCH] ACPICA: Introduce acpi_enable_all_wakeup_gpes() Add a routine for host OSes to enable all wakeup GPEs and disable all of the non-wakeup ones at the same time. It will be used for the handling of GPE wakeup from suspend-to-idle in Linux. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/evxfgpe.c | 32 ++++++++++++++++++++++++++++++++ include/acpi/acpixf.h | 1 + 2 files changed, 33 insertions(+) diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index 0cf159cc6e6d..56710a03c9b0 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -596,6 +596,38 @@ acpi_status acpi_enable_all_runtime_gpes(void) ACPI_EXPORT_SYMBOL(acpi_enable_all_runtime_gpes) +/****************************************************************************** + * + * FUNCTION: acpi_enable_all_wakeup_gpes + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Enable all "wakeup" GPEs and disable all of the other GPEs, in + * all GPE blocks. + * + ******************************************************************************/ + +acpi_status acpi_enable_all_wakeup_gpes(void) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_enable_all_wakeup_gpes); + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + status = acpi_hw_enable_all_wakeup_gpes(); + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_enable_all_wakeup_gpes) + /******************************************************************************* * * FUNCTION: acpi_install_gpe_block diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index dc9d037d3055..9fc1d71c82bc 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -692,6 +692,7 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status *event_status)) ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void)) ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_wakeup_gpes(void)) ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_get_gpe_device(u32 gpe_index, -- 2.20.1