[PATCH 2/7] drm/i915: Combine .compute_{pipe, intermediate}_wm() into one

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

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

We always call .compute_pipe_wm() and .compute_intermediate_wm()
back to back. Just combine them to a single hook for simplicity.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/i9xx_wm.c        | 57 +++++++++++++++++--
 drivers/gpu/drm/i915/display/intel_display.c  | 17 +-----
 .../gpu/drm/i915/display/intel_display_core.h |  6 +-
 drivers/gpu/drm/i915/display/intel_wm.c       | 24 ++------
 drivers/gpu/drm/i915/display/intel_wm.h       |  6 +-
 5 files changed, 63 insertions(+), 47 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/i9xx_wm.c b/drivers/gpu/drm/i915/display/i9xx_wm.c
index 5b21604312fd..3151a31a5653 100644
--- a/drivers/gpu/drm/i915/display/i9xx_wm.c
+++ b/drivers/gpu/drm/i915/display/i9xx_wm.c
@@ -1288,6 +1288,22 @@ static int g4x_compute_intermediate_wm(struct intel_atomic_state *state,
 	return 0;
 }
 
+static int g4x_compute_watermarks(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	int ret;
+
+	ret = g4x_compute_pipe_wm(state, crtc);
+	if (ret)
+		return ret;
+
+	ret = g4x_compute_intermediate_wm(state, crtc);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 static void g4x_merge_wm(struct drm_i915_private *dev_priv,
 			 struct g4x_wm_values *wm)
 {
@@ -1914,6 +1930,22 @@ static int vlv_compute_intermediate_wm(struct intel_atomic_state *state,
 	return 0;
 }
 
+static int vlv_compute_watermarks(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	int ret;
+
+	ret = vlv_compute_pipe_wm(state, crtc);
+	if (ret)
+		return ret;
+
+	ret = vlv_compute_intermediate_wm(state, crtc);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 static void vlv_merge_wm(struct drm_i915_private *dev_priv,
 			 struct vlv_wm_values *wm)
 {
@@ -2940,6 +2972,22 @@ static int ilk_compute_intermediate_wm(struct intel_atomic_state *state,
 	return 0;
 }
 
+static int ilk_compute_watermarks(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	int ret;
+
+	ret = ilk_compute_pipe_wm(state, crtc);
+	if (ret)
+		return ret;
+
+	ret = ilk_compute_intermediate_wm(state, crtc);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 /*
  * Merge the watermarks from all active pipes for a specific level.
  */
@@ -3986,16 +4034,14 @@ static void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv)
 }
 
 static const struct intel_wm_funcs ilk_wm_funcs = {
-	.compute_pipe_wm = ilk_compute_pipe_wm,
-	.compute_intermediate_wm = ilk_compute_intermediate_wm,
+	.compute_watermarks = ilk_compute_watermarks,
 	.initial_watermarks = ilk_initial_watermarks,
 	.optimize_watermarks = ilk_optimize_watermarks,
 	.get_hw_state = ilk_wm_get_hw_state,
 };
 
 static const struct intel_wm_funcs vlv_wm_funcs = {
-	.compute_pipe_wm = vlv_compute_pipe_wm,
-	.compute_intermediate_wm = vlv_compute_intermediate_wm,
+	.compute_watermarks = vlv_compute_watermarks,
 	.initial_watermarks = vlv_initial_watermarks,
 	.optimize_watermarks = vlv_optimize_watermarks,
 	.atomic_update_watermarks = vlv_atomic_update_fifo,
@@ -4003,8 +4049,7 @@ static const struct intel_wm_funcs vlv_wm_funcs = {
 };
 
 static const struct intel_wm_funcs g4x_wm_funcs = {
-	.compute_pipe_wm = g4x_compute_pipe_wm,
-	.compute_intermediate_wm = g4x_compute_intermediate_wm,
+	.compute_watermarks = g4x_compute_watermarks,
 	.initial_watermarks = g4x_initial_watermarks,
 	.optimize_watermarks = g4x_optimize_watermarks,
 	.get_hw_state = g4x_wm_get_hw_state_and_sanitize,
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index d4a371edfcdd..60866316fc68 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4292,22 +4292,11 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	if (ret)
 		return ret;
 
-	ret = intel_compute_pipe_wm(state, crtc);
+	ret = intel_wm_compute(state, crtc);
 	if (ret) {
 		drm_dbg_kms(&dev_priv->drm,
-			    "Target pipe watermarks are invalid\n");
-		return ret;
-	}
-
-	/*
-	 * Calculate 'intermediate' watermarks that satisfy both the
-	 * old state and the new state.  We can program these
-	 * immediately.
-	 */
-	ret = intel_compute_intermediate_wm(state, crtc);
-	if (ret) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "No valid intermediate pipe watermarks are possible\n");
+			    "[CRTC:%d:%s] watermarks are invalid\n",
+			    crtc->base.base.id, crtc->base.name);
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index 0a711114ff2b..9ad125d3c0c0 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -81,10 +81,8 @@ struct intel_display_funcs {
 struct intel_wm_funcs {
 	/* update_wm is for legacy wm management */
 	void (*update_wm)(struct drm_i915_private *dev_priv);
-	int (*compute_pipe_wm)(struct intel_atomic_state *state,
-			       struct intel_crtc *crtc);
-	int (*compute_intermediate_wm)(struct intel_atomic_state *state,
-				       struct intel_crtc *crtc);
+	int (*compute_watermarks)(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc);
 	void (*initial_watermarks)(struct intel_atomic_state *state,
 				   struct intel_crtc *crtc);
 	void (*atomic_update_watermarks)(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_wm.c b/drivers/gpu/drm/i915/display/intel_wm.c
index 462917bc488f..d7dc49aecd27 100644
--- a/drivers/gpu/drm/i915/display/intel_wm.c
+++ b/drivers/gpu/drm/i915/display/intel_wm.c
@@ -50,29 +50,15 @@ void intel_update_watermarks(struct drm_i915_private *i915)
 		i915->display.funcs.wm->update_wm(i915);
 }
 
-int intel_compute_pipe_wm(struct intel_atomic_state *state,
-			  struct intel_crtc *crtc)
+int intel_wm_compute(struct intel_atomic_state *state,
+		     struct intel_crtc *crtc)
 {
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_display *display = to_intel_display(state);
 
-	if (i915->display.funcs.wm->compute_pipe_wm)
-		return i915->display.funcs.wm->compute_pipe_wm(state, crtc);
-
-	return 0;
-}
-
-int intel_compute_intermediate_wm(struct intel_atomic_state *state,
-				  struct intel_crtc *crtc)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-
-	if (!i915->display.funcs.wm->compute_intermediate_wm)
-		return 0;
-
-	if (drm_WARN_ON(&i915->drm, !i915->display.funcs.wm->compute_pipe_wm))
+	if (!display->funcs.wm->compute_watermarks)
 		return 0;
 
-	return i915->display.funcs.wm->compute_intermediate_wm(state, crtc);
+	return display->funcs.wm->compute_watermarks(state, crtc);
 }
 
 bool intel_initial_watermarks(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_wm.h b/drivers/gpu/drm/i915/display/intel_wm.h
index 48429ac140d2..e97cdca89a5c 100644
--- a/drivers/gpu/drm/i915/display/intel_wm.h
+++ b/drivers/gpu/drm/i915/display/intel_wm.h
@@ -15,10 +15,8 @@ struct intel_crtc_state;
 struct intel_plane_state;
 
 void intel_update_watermarks(struct drm_i915_private *i915);
-int intel_compute_pipe_wm(struct intel_atomic_state *state,
-			  struct intel_crtc *crtc);
-int intel_compute_intermediate_wm(struct intel_atomic_state *state,
-				  struct intel_crtc *crtc);
+int intel_wm_compute(struct intel_atomic_state *state,
+		     struct intel_crtc *crtc);
 bool intel_initial_watermarks(struct intel_atomic_state *state,
 			      struct intel_crtc *crtc);
 void intel_atomic_update_watermarks(struct intel_atomic_state *state,
-- 
2.44.2