[PATCH] drm/i915: Introduce intel_release_shared_dpll()

[Ander Conselvan de Oliveira]

While the details of getting a shared dpll are wrapped by
intel_get_shared_dpll(), the release was still hand rolled into the
modeset code. Fix that by creating an entry point for releasing the
pll and move that code there.

v2: Take old_dpll from crtc->state instead of crtc_state. (CI)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c  |  6 +----
 drivers/gpu/drm/i915/intel_dpll_mgr.c | 41 +++++++++++++++--------------------
 drivers/gpu/drm/i915/intel_dpll_mgr.h | 11 +++-------
 3 files changed, 22 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a500f08..b3f4de1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12419,7 +12419,6 @@ static void intel_modeset_clear_plls(struct drm_atomic_state *state)
 {
 	struct drm_device *dev = state->dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_shared_dpll_config *shared_dpll = NULL;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *crtc_state;
 	int i;
@@ -12440,10 +12439,7 @@ static void intel_modeset_clear_plls(struct drm_atomic_state *state)
 		if (!old_dpll)
 			continue;
 
-		if (!shared_dpll)
-			shared_dpll = intel_atomic_get_shared_dpll_state(state);
-
-		intel_shared_dpll_config_put(shared_dpll, old_dpll, intel_crtc);
+		intel_release_shared_dpll(old_dpll, intel_crtc, state);
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index 0aac3ec..11c5d7e 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -41,28 +41,6 @@ intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
 	return (enum intel_dpll_id) (pll - dev_priv->shared_dplls);
 }
 
-void
-intel_shared_dpll_config_get(struct intel_shared_dpll_config *config,
-			     struct intel_shared_dpll *pll,
-			     struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum intel_dpll_id id = intel_get_shared_dpll_id(dev_priv, pll);
-
-	config[id].crtc_mask |= 1 << crtc->pipe;
-}
-
-void
-intel_shared_dpll_config_put(struct intel_shared_dpll_config *config,
-			     struct intel_shared_dpll *pll,
-			     struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum intel_dpll_id id = intel_get_shared_dpll_id(dev_priv, pll);
-
-	config[id].crtc_mask &= ~(1 << crtc->pipe);
-}
-
 /* For ILK+ */
 void assert_shared_dpll(struct drm_i915_private *dev_priv,
 			struct intel_shared_dpll *pll,
@@ -247,7 +225,7 @@ intel_reference_shared_dpll(struct intel_shared_dpll *pll,
 	DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
 			 pipe_name(crtc->pipe));
 
-	intel_shared_dpll_config_get(shared_dpll, pll, crtc);
+	shared_dpll[pll->id].crtc_mask |= 1 << crtc->pipe;
 }
 
 void intel_shared_dpll_commit(struct drm_atomic_state *state)
@@ -1784,3 +1762,20 @@ intel_get_shared_dpll(struct intel_crtc *crtc,
 
 	return dpll_mgr->get_dpll(crtc, crtc_state, encoder);
 }
+
+/**
+ * intel_release_shared_dpll - end use of DPLL by CRTC in atomic state
+ * @dpll: dpll in use by @crtc
+ * @crtc: crtc
+ * @state: atomic state
+ *
+ */
+void intel_release_shared_dpll(struct intel_shared_dpll *dpll,
+			       struct intel_crtc *crtc,
+			       struct drm_atomic_state *state)
+{
+	struct intel_shared_dpll_config *shared_dpll_config;
+
+	shared_dpll_config = intel_atomic_get_shared_dpll_state(state);
+	shared_dpll_config[dpll->id].crtc_mask &= ~(1 << crtc->pipe);
+}
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.h b/drivers/gpu/drm/i915/intel_dpll_mgr.h
index 89c5ada..1f19b6e 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.h
@@ -138,14 +138,6 @@ intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
 enum intel_dpll_id
 intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
 			 struct intel_shared_dpll *pll);
-void
-intel_shared_dpll_config_get(struct intel_shared_dpll_config *config,
-			     struct intel_shared_dpll *pll,
-			     struct intel_crtc *crtc);
-void
-intel_shared_dpll_config_put(struct intel_shared_dpll_config *config,
-			     struct intel_shared_dpll *pll,
-			     struct intel_crtc *crtc);
 void assert_shared_dpll(struct drm_i915_private *dev_priv,
 			struct intel_shared_dpll *pll,
 			bool state);
@@ -154,6 +146,9 @@ void assert_shared_dpll(struct drm_i915_private *dev_priv,
 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
 						struct intel_crtc_state *state,
 						struct intel_encoder *encoder);
+void intel_release_shared_dpll(struct intel_shared_dpll *dpll,
+			       struct intel_crtc *crtc,
+			       struct drm_atomic_state *state);
 void intel_prepare_shared_dpll(struct intel_crtc *crtc);
 void intel_enable_shared_dpll(struct intel_crtc *crtc);
 void intel_disable_shared_dpll(struct intel_crtc *crtc);
-- 
2.5.5