[Intel-gfx] [PATCH 3/4] drm/i915: push crtc compute clock to encoder compute config on DDI

[Jani Nikula]

With this, we can get rid of the encoder specific stuff that we had in
haswell_crtc_compute_clock(), which we throw away entirely. This also
paves the way for potential further untangling of encoder specific
checks in the depths of intel_get_shared_dpll() that plague the DDI
platforms.

Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Suggested-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/intel_crt.c     |  7 +++++++
 drivers/gpu/drm/i915/intel_ddi.c     |  7 +++++++
 drivers/gpu/drm/i915/intel_display.c | 21 ---------------------
 3 files changed, 14 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 437339f5d098..67f771f24608 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -361,6 +361,7 @@ static bool hsw_crt_compute_config(struct intel_encoder *encoder,
 				   struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
 
 	pipe_config->has_pch_encoder = true;
 
@@ -377,6 +378,12 @@ static bool hsw_crt_compute_config(struct intel_encoder *encoder,
 	/* FDI must always be 2.7 GHz */
 	pipe_config->port_clock = 135000 * 2;
 
+	if (!intel_get_shared_dpll(crtc, pipe_config, encoder)) {
+		DRM_DEBUG_KMS("failed to find PLL for pipe %c\n",
+			      pipe_name(crtc->pipe));
+		return false;
+	}
+
 	return true;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index b307b6fe1ce3..9819e51fa160 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2590,6 +2590,7 @@ static bool intel_ddi_compute_config(struct intel_encoder *encoder,
 				     struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
 	int type = encoder->type;
 	int port = intel_ddi_get_encoder_port(encoder);
 	int ret;
@@ -2609,6 +2610,12 @@ static bool intel_ddi_compute_config(struct intel_encoder *encoder,
 			bxt_ddi_phy_calc_lane_lat_optim_mask(encoder,
 							     pipe_config->lane_count);
 
+	if (!intel_get_shared_dpll(crtc, pipe_config, encoder)) {
+		DRM_DEBUG_KMS("failed to find PLL for pipe %c\n",
+			      pipe_name(crtc->pipe));
+		return false;
+	}
+
 	return ret;
 
 }
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 2faa938f57a3..6ed299670f27 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9011,23 +9011,6 @@ void hsw_disable_pc8(struct drm_i915_private *dev_priv)
 	}
 }
 
-static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
-				      struct intel_crtc_state *crtc_state)
-{
-	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI)) {
-		struct intel_encoder *encoder =
-			intel_ddi_get_crtc_new_encoder(crtc_state);
-
-		if (!intel_get_shared_dpll(crtc, crtc_state, encoder)) {
-			DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
-					 pipe_name(crtc->pipe));
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
 static void cannonlake_get_ddi_pll(struct drm_i915_private *dev_priv,
 				   enum port port,
 				   struct intel_crtc_state *pipe_config)
@@ -14141,16 +14124,12 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
 		dev_priv->display.get_pipe_config = haswell_get_pipe_config;
 		dev_priv->display.get_initial_plane_config =
 			skylake_get_initial_plane_config;
-		dev_priv->display.crtc_compute_clock =
-			haswell_crtc_compute_clock;
 		dev_priv->display.crtc_enable = haswell_crtc_enable;
 		dev_priv->display.crtc_disable = haswell_crtc_disable;
 	} else if (HAS_DDI(dev_priv)) {
 		dev_priv->display.get_pipe_config = haswell_get_pipe_config;
 		dev_priv->display.get_initial_plane_config =
 			ironlake_get_initial_plane_config;
-		dev_priv->display.crtc_compute_clock =
-			haswell_crtc_compute_clock;
 		dev_priv->display.crtc_enable = haswell_crtc_enable;
 		dev_priv->display.crtc_disable = haswell_crtc_disable;
 	} else if (HAS_PCH_SPLIT(dev_priv)) {
-- 
2.11.0