[PATCH] drm/i915: Remove unused function intel_ddi_get_link_dpll()

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The function intel_ddi_get_link_dpll() was added in f169660ed4e5
("drm/i915/dp: Add a standalone function to obtain shared dpll for
HSW/BDW/SKL/BXT") to "allow for the implementation of a platform
neutral upfront link training function", but such implementation
never landed.

So remove that function and clean up the exported shared DPLL interface.

Fixes: f169660ed4e5 ("drm/i915/dp: Add a standalone function to obtain
shared dpll for HSW/BDW/SKL/BXT")
Cc: Durgadoss R <durgadoss.r@xxxxxxxxx>
Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Cc: Jim Bride <jim.bride@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@xxxxxxxxx>

--

I omitted "Cc: <stable@xxxxxxxxxxxxxxx> # v4.9+" from dim fixes output,
since this just deletes dead code.
---
 drivers/gpu/drm/i915/intel_ddi.c      | 39 --------------------------
 drivers/gpu/drm/i915/intel_dpll_mgr.c | 52 ++++++-----------------------------
 drivers/gpu/drm/i915/intel_dpll_mgr.h | 16 -----------
 3 files changed, 8 insertions(+), 99 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 66b367d..3eba5bf 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2126,45 +2126,6 @@ intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port)
 	return connector;
 }
 
-struct intel_shared_dpll *
-intel_ddi_get_link_dpll(struct intel_dp *intel_dp, int clock)
-{
-	struct intel_connector *connector = intel_dp->attached_connector;
-	struct intel_encoder *encoder = connector->encoder;
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct intel_shared_dpll *pll = NULL;
-	struct intel_shared_dpll_state tmp_pll_state;
-	enum intel_dpll_id dpll_id;
-
-	if (IS_GEN9_LP(dev_priv)) {
-		dpll_id =  (enum intel_dpll_id)dig_port->port;
-		/*
-		 * Select the required PLL. This works for platforms where
-		 * there is no shared DPLL.
-		 */
-		pll = &dev_priv->shared_dplls[dpll_id];
-		if (WARN_ON(pll->active_mask)) {
-
-			DRM_ERROR("Shared DPLL in use. active_mask:%x\n",
-				  pll->active_mask);
-			return NULL;
-		}
-		tmp_pll_state = pll->state;
-		if (!bxt_ddi_dp_set_dpll_hw_state(clock,
-						  &pll->state.hw_state)) {
-			DRM_ERROR("Could not setup DPLL\n");
-			pll->state = tmp_pll_state;
-			return NULL;
-		}
-	} else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
-		pll = skl_find_link_pll(dev_priv, clock);
-	} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
-		pll = hsw_ddi_dp_get_dpll(encoder, clock);
-	}
-	return pll;
-}
-
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 {
 	struct intel_digital_port *intel_dig_port;
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index c92a255..4388c21 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -42,44 +42,6 @@
  * commit phase.
  */
 
-struct intel_shared_dpll *
-skl_find_link_pll(struct drm_i915_private *dev_priv, int clock)
-{
-	struct intel_shared_dpll *pll = NULL;
-	struct intel_dpll_hw_state dpll_hw_state;
-	enum intel_dpll_id i;
-	bool found = false;
-
-	if (!skl_ddi_dp_set_dpll_hw_state(clock, &dpll_hw_state))
-		return pll;
-
-	for (i = DPLL_ID_SKL_DPLL1; i <= DPLL_ID_SKL_DPLL3; i++) {
-		pll = &dev_priv->shared_dplls[i];
-
-		/* Only want to check enabled timings first */
-		if (pll->state.crtc_mask == 0)
-			continue;
-
-		if (memcmp(&dpll_hw_state, &pll->state.hw_state,
-			   sizeof(pll->state.hw_state)) == 0) {
-			found = true;
-			break;
-		}
-	}
-
-	/* Ok no matching timings, maybe there's a free one? */
-	for (i = DPLL_ID_SKL_DPLL1;
-	     ((found == false) && (i <= DPLL_ID_SKL_DPLL3)); i++) {
-		pll = &dev_priv->shared_dplls[i];
-		if (pll->state.crtc_mask == 0) {
-			pll->state.hw_state = dpll_hw_state;
-			break;
-		}
-	}
-
-	return pll;
-}
-
 static void
 intel_atomic_duplicate_dpll_state(struct drm_i915_private *dev_priv,
 				  struct intel_shared_dpll_state *shared_dpll)
@@ -811,8 +773,8 @@ static struct intel_shared_dpll *hsw_ddi_hdmi_get_dpll(int clock,
 	return pll;
 }
 
-struct intel_shared_dpll *hsw_ddi_dp_get_dpll(struct intel_encoder *encoder,
-					      int clock)
+static struct intel_shared_dpll *
+hsw_ddi_dp_get_dpll(struct intel_encoder *encoder, int clock)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_shared_dpll *pll;
@@ -1360,8 +1322,9 @@ static bool skl_ddi_hdmi_pll_dividers(struct intel_crtc *crtc,
 }
 
 
-bool skl_ddi_dp_set_dpll_hw_state(int clock,
-				  struct intel_dpll_hw_state *dpll_hw_state)
+static bool
+skl_ddi_dp_set_dpll_hw_state(int clock,
+			     struct intel_dpll_hw_state *dpll_hw_state)
 {
 	uint32_t ctrl1;
 
@@ -1816,8 +1779,9 @@ static bool bxt_ddi_set_dpll_hw_state(int clock,
 	return true;
 }
 
-bool bxt_ddi_dp_set_dpll_hw_state(int clock,
-			  struct intel_dpll_hw_state *dpll_hw_state)
+static bool
+bxt_ddi_dp_set_dpll_hw_state(int clock,
+			     struct intel_dpll_hw_state *dpll_hw_state)
 {
 	struct bxt_clk_div clk_div = {0};
 
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.h b/drivers/gpu/drm/i915/intel_dpll_mgr.h
index af1497e..f8d13a9 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.h
@@ -282,20 +282,4 @@ void intel_shared_dpll_init(struct drm_device *dev);
 void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
 			      struct intel_dpll_hw_state *hw_state);
 
-/* BXT dpll related functions */
-bool bxt_ddi_dp_set_dpll_hw_state(int clock,
-			  struct intel_dpll_hw_state *dpll_hw_state);
-
-
-/* SKL dpll related functions */
-bool skl_ddi_dp_set_dpll_hw_state(int clock,
-				  struct intel_dpll_hw_state *dpll_hw_state);
-struct intel_shared_dpll *skl_find_link_pll(struct drm_i915_private *dev_priv,
-					    int clock);
-
-
-/* HSW dpll related functions */
-struct intel_shared_dpll *hsw_ddi_dp_get_dpll(struct intel_encoder *encoder,
-					      int clock);
-
 #endif /* _INTEL_DPLL_MGR_H_ */
-- 
2.5.5

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