[PATCH 02/12] drm/i915: Use the spr/cur latencies on vlv/chv/g4x

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reduce the differences between the platforms by using the spr/cur
watermark latency values on gmch platforms as well. We'll also
print the wm latencies the same way as we do for ilk+.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c |  4 +-
 drivers/gpu/drm/i915/intel_pm.c     | 63 ++++++++++++++++++-----------
 2 files changed, 41 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9e0cb995801f..35b4c49c9bca 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3873,7 +3873,7 @@ static int spr_wm_latency_open(struct inode *inode, struct file *file)
 {
 	struct drm_i915_private *dev_priv = inode->i_private;
 
-	if (HAS_GMCH_DISPLAY(dev_priv))
+	if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
 		return -ENODEV;
 
 	return single_open(file, spr_wm_latency_show, dev_priv);
@@ -3883,7 +3883,7 @@ static int cur_wm_latency_open(struct inode *inode, struct file *file)
 {
 	struct drm_i915_private *dev_priv = inode->i_private;
 
-	if (HAS_GMCH_DISPLAY(dev_priv))
+	if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
 		return -ENODEV;
 
 	return single_open(file, cur_wm_latency_show, dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f871a6f152c3..fe522ceae97a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -801,6 +801,27 @@ static int intel_wm_num_levels(struct drm_i915_private *dev_priv)
 	return dev_priv->wm.max_level + 1;
 }
 
+static void intel_print_wm_latency(struct drm_i915_private *dev_priv,
+				   const char *name,
+				   const uint16_t wm[8])
+{
+	int level, max_level = ilk_wm_max_level(dev_priv);
+
+	for (level = 0; level <= max_level; level++) {
+		unsigned int latency = wm[level];
+
+		if (latency == 0) {
+			DRM_DEBUG_KMS("%s WM%d latency not provided\n",
+				      name, level);
+			continue;
+		}
+
+		DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n",
+			      name, level, wm[level],
+			      latency / 10, latency % 10);
+	}
+}
+
 static int intel_plane_wm_latency(struct intel_plane *plane,
 				  int level)
 {
@@ -809,9 +830,6 @@ static int intel_plane_wm_latency(struct intel_plane *plane,
 	if (INTEL_GEN(dev_priv) >= 9)
 		return dev_priv->wm.skl_latency[level];
 
-	if (HAS_GMCH_DISPLAY(dev_priv))
-		return dev_priv->wm.pri_latency[level];
-
 	switch (plane->id) {
 	case PLANE_PRIMARY:
 		return dev_priv->wm.pri_latency[level];
@@ -1066,6 +1084,15 @@ static void g4x_setup_wm_latency(struct drm_i915_private *dev_priv)
 	dev_priv->wm.pri_latency[G4X_WM_LEVEL_HPLL] = 350;
 
 	dev_priv->wm.max_level = G4X_WM_LEVEL_HPLL;
+
+	memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency,
+	       sizeof(dev_priv->wm.pri_latency));
+	memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency,
+	       sizeof(dev_priv->wm.pri_latency));
+
+	intel_print_wm_latency(dev_priv, "Primary", dev_priv->wm.pri_latency);
+	intel_print_wm_latency(dev_priv, "Sprite", dev_priv->wm.spr_latency);
+	intel_print_wm_latency(dev_priv, "Cursor", dev_priv->wm.cur_latency);
 }
 
 static int g4x_plane_fifo_size(enum plane_id plane_id, int level)
@@ -1618,6 +1645,15 @@ static void vlv_setup_wm_latency(struct drm_i915_private *dev_priv)
 
 		dev_priv->wm.max_level = VLV_WM_LEVEL_DDR_DVFS;
 	}
+
+	memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency,
+	       sizeof(dev_priv->wm.pri_latency));
+	memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency,
+	       sizeof(dev_priv->wm.pri_latency));
+
+	intel_print_wm_latency(dev_priv, "Primary", dev_priv->wm.pri_latency);
+	intel_print_wm_latency(dev_priv, "Sprite", dev_priv->wm.spr_latency);
+	intel_print_wm_latency(dev_priv, "Cursor", dev_priv->wm.cur_latency);
 }
 
 static uint16_t vlv_compute_wm_level(const struct intel_crtc_state *crtc_state,
@@ -2954,27 +2990,6 @@ int ilk_wm_max_level(const struct drm_i915_private *dev_priv)
 		return 2;
 }
 
-static void intel_print_wm_latency(struct drm_i915_private *dev_priv,
-				   const char *name,
-				   const uint16_t wm[8])
-{
-	int level, max_level = ilk_wm_max_level(dev_priv);
-
-	for (level = 0; level <= max_level; level++) {
-		unsigned int latency = wm[level];
-
-		if (latency == 0) {
-			DRM_DEBUG_KMS("%s WM%d latency not provided\n",
-				      name, level);
-			continue;
-		}
-
-		DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n",
-			      name, level, wm[level],
-			      latency / 10, latency % 10);
-	}
-}
-
 static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv,
 				    uint16_t wm[5], uint16_t min)
 {
-- 
2.18.1

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