| Message ID | 1471559812-19967-10-git-send-email-srinivas.pandruvada@linux.intel.com (mailing list archive) |
|---|---|
| State | Changes Requested, archived |
| Headers | show |
On Thursday, August 18, 2016 03:36:50 PM Srinivas Pandruvada wrote: > 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(+) > > 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 Any chance to use IS_ENABLED() here too? > + > if (!ghes_disable) > capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; > if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) > Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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(+)