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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-08-10 00:31:58 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-08-17 20:54:33 +0200 |
| commit | 1312b7e0caca44e7ff312bc2eaa888943384e3e1 (patch) | |
| tree | 096a21dc5ca3b555a799f2ea7fdebfbfc63d6e58 /include/acpi | |
| parent | ecc1165b8b743fd1503b9c799ae3a9933b89877b (diff) | |
| download | linux-1312b7e0caca44e7ff312bc2eaa888943384e3e1.tar.bz2 | |
ACPICA: Make it possible to enable runtime GPEs earlier
Runtime GPEs have corresponding _Lxx/_Exx methods and are enabled
automatically during the initialization of the ACPI subsystem through
acpi_update_all_gpes() with the assumption that acpi_setup_gpe_for_wake()
will be called in advance for all of the GPEs pointed to by _PRW
objects in the namespace that may be affected by acpi_update_all_gpes().
That is, acpi_ev_initialize_gpe_block() can only be called for a GPE
block after acpi_setup_gpe_for_wake() has been called for all of the
_PRW (wakeup) GPEs in it.
The platform firmware on some systems, however, expects GPEs to be
enabled before the enumeration of devices which is when
acpi_setup_gpe_for_wake() is called and that goes against the above
assumption.
For this reason, introduce a new flag to be set by
acpi_ev_initialize_gpe_block() when automatically enabling a GPE
to indicate to acpi_setup_gpe_for_wake() that it needs to drop the
reference to the GPE coming from acpi_ev_initialize_gpe_block()
and modify acpi_setup_gpe_for_wake() accordingly. These changes
allow acpi_setup_gpe_for_wake() and acpi_ev_initialize_gpe_block()
to be invoked in any order.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/actypes.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 2fcbaec8b368..71eddf645566 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -775,7 +775,7 @@ typedef u32 acpi_event_status; * | | | | +-- Type of dispatch:to method, handler, notify, or none * | | | +----- Interrupt type: edge or level triggered * | | +------- Is a Wake GPE - * | +--------- Is GPE masked by the software GPE masking mechanism + * | +--------- Has been enabled automatically at init time * +------------ <Reserved> */ #define ACPI_GPE_DISPATCH_NONE (u8) 0x00 @@ -791,6 +791,7 @@ typedef u32 acpi_event_status; #define ACPI_GPE_XRUPT_TYPE_MASK (u8) 0x08 #define ACPI_GPE_CAN_WAKE (u8) 0x10 +#define ACPI_GPE_AUTO_ENABLED (u8) 0x20 /* * Flags for GPE and Lock interfaces |