| Message ID | 1473373615-51427-7-git-send-email-srinivas.pandruvada@linux.intel.com (mailing list archive) |
|---|---|
| State | Changes Requested, archived |
| Headers | show |
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 85b7d07..61643a5 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -330,6 +330,13 @@ static void acpi_bus_osc_support(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; +#ifdef CONFIG_X86 + if (boot_cpu_has(X86_FEATURE_HWP)) { + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT; + } +#endif + if (!ghes_disable) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
Need to set platform wide _OSC bits to enable CPPC and CPPC version 2. If platform supports CPPC, then BIOS exposess CPPC tables. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- drivers/acpi/bus.c | 7 +++++++ 1 file changed, 7 insertions(+)