drm/i915: remove broken intel_pch_has_edp function

Since we set the output type of PCH attached eDP panels to
INTEL_OUTPUT_eDP this function would never return true when it should.
It's been replaced by working functions.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/intel_display.c

@@ -2001,8 +2001,7 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
 
 	/* Enable panel fitting for LVDS */
 	if (dev_priv->pch_pf_size &&
-	    (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)
-	     || HAS_eDP || intel_pch_has_edp(crtc))) {
+	    (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
 		/* Force use of hard-coded filter coefficients
 		 * as some pre-programmed values are broken,
 		 * e.g. x201.
@@ -3717,7 +3716,7 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
 				temp |= PIPE_8BPC;
 			else
 				temp |= PIPE_6BPC;
-		} else if (has_edp_encoder || (is_dp && intel_pch_has_edp(crtc))) {
+		} else if (has_edp_encoder) {
 			switch (dev_priv->edp.bpp/3) {
 			case 8:
 				temp |= PIPE_8BPC;

drivers/gpu/drm/i915/intel_dp.c

@@ -648,25 +648,6 @@ intel_dp_compute_m_n(int bpp,
 	intel_reduce_ratio(&m_n->link_m, &m_n->link_n);
 }
 
-bool intel_pch_has_edp(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_mode_config *mode_config = &dev->mode_config;
-	struct drm_encoder *encoder;
-
-	list_for_each_entry(encoder, &mode_config->encoder_list, head) {
-		struct intel_dp *intel_dp;
-
-		if (encoder->crtc != crtc)
-			continue;
-
-		intel_dp = enc_to_intel_dp(encoder);
-		if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT)
-			return intel_dp->is_pch_edp;
-	}
-	return false;
-}
-
 void
 intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
 		 struct drm_display_mode *adjusted_mode)

drivers/gpu/drm/i915/intel_drv.h

@@ -209,7 +209,6 @@ extern void intel_dp_init(struct drm_device *dev, int dp_reg);
 void
 intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
 		 struct drm_display_mode *adjusted_mode);
-extern bool intel_pch_has_edp(struct drm_crtc *crtc);
 extern bool intel_dpd_is_edp(struct drm_device *dev);
 extern void intel_edp_link_config (struct intel_encoder *, int *, int *);
 extern bool intel_encoder_is_pch_edp(struct drm_encoder *encoder);