diff options
| author | Sudeep Holla <sudeep.holla@arm.com> | 2022-11-10 13:45:04 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-11-14 19:09:07 +0100 |
| commit | e81c782c16844dc758a784899c2fe5260386211b (patch) | |
| tree | 8ca58e1702340b4392e04ced892cf057fedab381 /include/linux/acpi.h | |
| parent | 094226ad94f471a9f19e8f8e7140a09c2625abaa (diff) | |
ACPI: Implement a generic FFH Opregion handler
This registers the FFH OpRegion handler before ACPI tables are
loaded. The platform support for the same is checked via Platform-Wide
OSPM Capabilities(OSC) before registering the OpRegion handler.
It relies on the special context data passed to offset and the length.
However the interpretation of the values is platform/architecture
specific. This generic handler just passed all the information to
the platform/architecture specific callback. It also implements the
default callbacks which return as not supported.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 3015235d65e3..c026c1129cba 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -586,6 +586,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); #define OSC_SB_CPC_FLEXIBLE_ADR_SPACE 0x00004000 #define OSC_SB_NATIVE_USB4_SUPPORT 0x00040000 #define OSC_SB_PRM_SUPPORT 0x00200000 +#define OSC_SB_FFH_OPR_SUPPORT 0x00400000 extern bool osc_sb_apei_support_acked; extern bool osc_pc_lpi_support_confirmed; @@ -1488,6 +1489,12 @@ void acpi_init_pcc(void); static inline void acpi_init_pcc(void) { } #endif +#ifdef CONFIG_ACPI_FFH +void acpi_init_ffh(void); +#else +static inline void acpi_init_ffh(void) { } +#endif + #ifdef CONFIG_ACPI extern void acpi_device_notify(struct device *dev); extern void acpi_device_notify_remove(struct device *dev); |