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@chromium.org>
This commit is contained in:
Duncan Laurie 2016-09-19 12:04:19 -07:00
parent 1241e7db55
commit 884dfe6329
2 changed files with 8 additions and 0 deletions

View File

@ -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 */
}

View File

@ -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);