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[PATCH v2 6/8] acpi: bus: Enable HWP CPPC objects

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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 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 85b7d07..1001b92 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -330,6 +330,11 @@ static void acpi_bus_osc_support(void)
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
 
+	if (IS_ENABLED(CONFIG_X86) && boot_cpu_has(X86_FEATURE_HWP)) {
+		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT;
+		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT;
+	}
+
 	if (!ghes_disable)
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
 	if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
-- 
2.7.4

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[PATCH v2 0/8] Support Intel® Turbo Boost Max Technology 3.0 Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:10 +0200
  [PATCH v2 4/8] sched, x86: use arch_update_cpu_topology to indicate x86 need sched domain rebuild Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:10 +0200
  [PATCH v2 6/8] acpi: bus: Enable HWP CPPC objects Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:20 +0200
  [PATCH v2 8/8] cpufreq: intel_pstate: Use CPPC to get max performance Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:20 +0200
  [PATCH v2 3/8] x86, cpu: provide a function topology_num_packages to enumerate #packages Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:20 +0200
  [PATCH v2 2/8] sched: Extend scheduler's asym packing Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:30 +0200
    Re: [PATCH v2 2/8] sched: Extend scheduler's asym packing Peter Zijlstra <peterz@infradead.org> - 2016-09-08 10:10 +0200
      Re: [PATCH v2 2/8] sched: Extend scheduler's asym packing Tim Chen <tim.c.chen@linux.intel.com> - 2016-09-08 20:10 +0200
        Re: [PATCH v2 2/8] sched: Extend scheduler's asym packing Peter Zijlstra <peterz@infradead.org> - 2016-09-08 20:30 +0200
  Re: [PATCH v2 0/8] Support Intel® Turbo Boost Max Technology 3.0 Peter Zijlstra <peterz@infradead.org> - 2016-09-08 10:10 +0200

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