[PATCH v6 21/23] drm/i915/slpc: Add Broxton SLPC support

[Sagar Arun Kamble]

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

Adds has_slpc to broxton info and adds broxton firmware version check
to sanitize_slpc_option.

v1: Adjusted slpc version check for major version 8.
    Added message if version mismatch happens for easier debug. (Sagar)

v2-v3: Rebase.

v4: Commit message update.

v5: Rebase. Updated check in sanitize_slpc_option.

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         | 1 +
 drivers/gpu/drm/i915/intel_guc_loader.c | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 829cc48..983b0f1 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -396,6 +396,7 @@
 
 static const struct intel_device_info intel_broxton_info = {
 	GEN9_LP_FEATURES,
+	.has_slpc = 1,
 	.platform = INTEL_BROXTON,
 	.ddb_size = 512,
 };
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 778f7a9..81e921c 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -177,7 +177,8 @@ void sanitize_slpc_option(struct drm_i915_private *dev_priv)
 	if (!i915.enable_guc_submission)
 		i915.enable_slpc = 0;
 
-	if (IS_SKYLAKE(dev_priv) && (guc_fw->guc_fw_major_found != 9)) {
+	if ((IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    (guc_fw->guc_fw_major_found != 9)) {
 		DRM_INFO("SLPC not supported with current GuC firmware\n");
 		i915.enable_slpc = 0;
 	}
-- 
1.9.1