diff options
| author | Armin Wolf <[email protected]> | 2024-03-09 21:13:07 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2024-03-27 16:39:35 +0100 |
| commit | 6e8345f23ca37d6d41bb76be5d6a705ddf542817 (patch) | |
| tree | 6f1cf0f6dc8fccfb16ce47dfffd078efcd8e49e7 | |
| parent | 95d43290f1e476b3be782dd17642e452d0436266 (diff) | |
ACPI: bus: Indicate support for more than 16 p-states thru _OSC
The code responsible for parsing the available p-states should
have no problems handling more than 16 p-states.
Indicate this by setting bit 10 ("Greater Than 16 p-state support")
when evaluating _OSC.
Signed-off-by: Armin Wolf <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
| -rw-r--r-- | drivers/acpi/bus.c | 1 | ||||
| -rw-r--r-- | include/linux/acpi.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 9c13a4e43fa8..d5b0e80dc48e 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -321,6 +321,7 @@ static void acpi_bus_osc_negotiate_platform_control(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_OVER_16_PSTATES_SUPPORT; if (IS_ENABLED(CONFIG_ACPI_PRMT)) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT; if (IS_ENABLED(CONFIG_ACPI_FFH)) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 51bdd9e08f6d..0e0b027e27e2 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -574,6 +574,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); #define OSC_SB_PCLPI_SUPPORT 0x00000080 #define OSC_SB_OSLPI_SUPPORT 0x00000100 #define OSC_SB_FAST_THERMAL_SAMPLING_SUPPORT 0x00000200 +#define OSC_SB_OVER_16_PSTATES_SUPPORT 0x00000400 #define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT 0x00001000 #define OSC_SB_GENERIC_INITIATOR_SUPPORT 0x00002000 #define OSC_SB_CPC_FLEXIBLE_ADR_SPACE 0x00004000 |