[Intel-gfx] drm/i915/slpc: Add SKL SLPC Support

[Sagar Arun Kamble]

From: Tom O'Rourke <Tom.O'Rourke at intel.com>

This patch adds has_slpc to skylake info.

The SLPC interface has changed and could continue to
change.  Only GuC versions known to be compatible are
supported here.

On Skylake, GuC firmware v6 is supported.  Other
platforms and versions can be added here later.

v2: Move slpc_version_check to intel_guc_ucode_init
v3: fix whitespace (Sagar)
v5: Moved version check to different patch as has_slpc
    should not be updated based on it. Instead module paramter
    should be updated based on version check. (Sagar)
    Added support to skylake_gt3 as well. (Sagar)

Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/i915_pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 2587b1b..e678051 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -322,12 +322,14 @@ static const struct intel_device_info intel_skylake_info = {
 	BDW_FEATURES,
 	.is_skylake = 1,
 	.gen = 9,
+	.has_slpc = 1,
 };
 
 static const struct intel_device_info intel_skylake_gt3_info = {
 	BDW_FEATURES,
 	.is_skylake = 1,
 	.gen = 9,
+	.has_slpc = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
-- 
1.9.1