Duncan Laurie (dlaurie(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16657
-gerrit
commit 1033d853bf9b7efbbd4a200f46cb3d9dfd06b68a
Author: Duncan Laurie <dlaurie(a)chromium.org>
Date: Mon Sep 19 12:04:19 2016 -0700
x86: acpi: Add function for querying GPE status
Add a function that can be implemented by the SOC to read
and clear the status of a single GPE. This can be used
during firmware to poll for interrupt status.
BUG=chrome-os-partner:53336
Change-Id: I536c2176320fefa4c186dabcdddb55880c47fbad
Signed-off-by: Duncan Laurie <dlaurie(a)chromium.org>
---
src/arch/x86/acpi.c | 5 +++++
src/arch/x86/include/arch/acpi.h | 3 +++
2 files changed, 8 insertions(+)
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c
index bbeb92f..edb6835 100644
--- a/src/arch/x86/acpi.c
+++ b/src/arch/x86/acpi.c
@@ -1093,3 +1093,8 @@ void acpi_save_gnvs(u32 gnvs_address)
if (gnvs)
*gnvs = gnvs_address;
}
+
+__attribute__ ((weak)) int acpi_get_gpe(int gpe)
+{
+ return -1; /* implemented by SOC */
+}
diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h
index e81ddbf..7d29931 100644
--- a/src/arch/x86/include/arch/acpi.h
+++ b/src/arch/x86/include/arch/acpi.h
@@ -677,6 +677,9 @@ static inline int acpi_sleep_from_pm1(uint32_t pm1_cnt)
/* Returns ACPI_Sx values. */
int acpi_get_sleep_type(void);
+/* Read and clear GPE status */
+int acpi_get_gpe(int gpe);
+
static inline int acpi_s3_resume_allowed(void)
{
return IS_ENABLED(CONFIG_HAVE_ACPI_RESUME);