[PATCH 28/28] drm/i915/slpc: Only Enable GTPERF and Cap frequency to RP0

[Sagar Arun Kamble]

From: "Kamble, Sagar A" <sagar.a.kamble at intel.com>

v2: Updated tasks and frequency post reset.

Signed-off-by: Kamble, Sagar A <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c |  2 +-
 drivers/gpu/drm/i915/intel_slpc.c   | 21 +++++++++++++++++++++
 drivers/gpu/drm/i915/intel_slpc.h   |  5 +++++
 3 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 28c2319..d6971824 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1235,7 +1235,7 @@ static int slpc_enable_disable_get(struct drm_device *dev, u64 *val,
 	return ret;
 }
 
-static int slpc_enable_disable_set(struct drm_device *dev, u64 val,
+int slpc_enable_disable_set(struct drm_device *dev, u64 val,
 				   enum slpc_param_id enable_id,
 				   enum slpc_param_id disable_id)
 {
diff --git a/drivers/gpu/drm/i915/intel_slpc.c b/drivers/gpu/drm/i915/intel_slpc.c
index 2ec89b9..cda4272 100644
--- a/drivers/gpu/drm/i915/intel_slpc.c
+++ b/drivers/gpu/drm/i915/intel_slpc.c
@@ -231,12 +231,33 @@ void intel_slpc_disable(struct drm_i915_private *dev_priv)
 
 void intel_slpc_enable(struct drm_i915_private *dev_priv)
 {
+	u64 val;
+
 	/* Initialize the rps frequecny values */
 	gen6_init_rps_frequencies(dev_priv);
 
 	host2guc_slpc_reset(dev_priv);
 	dev_priv->guc.slpc.enabled = true;
 
+	/* Enable only GTPERF task, Disable others */
+	val = SLPC_PARAM_TASK_ENABLED;
+	slpc_enable_disable_set(dev_priv, val,
+				SLPC_PARAM_TASK_ENABLE_GTPERF,
+				SLPC_PARAM_TASK_DISABLE_GTPERF);
+
+	val = SLPC_PARAM_TASK_DISABLED;
+	slpc_enable_disable_set(dev_priv, val,
+				SLPC_PARAM_TASK_ENABLE_BALANCER,
+				SLPC_PARAM_TASK_DISABLE_BALANCER);
+
+	slpc_enable_disable_set(dev_priv, val,
+				SLPC_PARAM_TASK_ENABLE_DCC,
+				SLPC_PARAM_TASK_DISABLE_DCC);
+
+	intel_slpc_set_param(dev_priv,
+			     SLPC_PARAM_GLOBAL_DISABLE_IA_GT_BALANCING,
+			     1);
+
 	return;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_slpc.h b/drivers/gpu/drm/i915/intel_slpc.h
index bf5aa1a..f2e9b73 100644
--- a/drivers/gpu/drm/i915/intel_slpc.h
+++ b/drivers/gpu/drm/i915/intel_slpc.h
@@ -216,4 +216,9 @@ void intel_slpc_set_param(struct drm_i915_private *dev_priv, enum slpc_param_id
 void intel_slpc_get_param(struct drm_i915_private *dev_priv, enum slpc_param_id id,
 			  int *overriding, u32 *value);
 void intel_slpc_query_task_state(struct drm_i915_private *dev_priv);
+
+/* i915_debugfs.c */
+int slpc_enable_disable_set(struct drm_device *dev, u64 val,
+			    enum slpc_param_id enable_id,
+			    enum slpc_param_id disable_id);
 #endif
-- 
1.9.1