drm/i915: split Ironlake FDI enable function

Easier to read, and will pair up with a disable function.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 45 insertions, 27 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ff549199c700..086df969de4c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1848,47 +1848,21 @@ static void gen6_fdi_link_train(struct drm_crtc *crtc)
 	DRM_DEBUG_KMS("FDI train done.\n");
 }
 
-static void ironlake_crtc_enable(struct drm_crtc *crtc)
+static void ironlake_fdi_enable(struct drm_crtc *crtc)
 {
 	struct drm_device *dev = crtc->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	int pipe = intel_crtc->pipe;
-	int plane = intel_crtc->plane;
-	int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
 	int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
-	int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
-	int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
 	int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
 	int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
-	int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
-	int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
-	int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
-	int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
-	int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
-	int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
-	int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
-	int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B;
-	int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B;
-	int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B;
-	int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B;
-	int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B;
-	int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B;
-	int trans_dpll_sel = (pipe == 0) ? 0 : 1;
 	u32 temp;
 	u32 pipe_bpc;
 
 	temp = I915_READ(pipeconf_reg);
 	pipe_bpc = temp & PIPE_BPC_MASK;
 
-	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
-		temp = I915_READ(PCH_LVDS);
-		if ((temp & LVDS_PORT_EN) == 0) {
-			I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
-			POSTING_READ(PCH_LVDS);
-		}
-	}
-
 	/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
 	temp = I915_READ(fdi_rx_reg);
 	/*
@@ -1916,6 +1890,50 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
 		I915_READ(fdi_tx_reg);
 		udelay(100);
 	}
+}
+
+static void ironlake_crtc_enable(struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	int pipe = intel_crtc->pipe;
+	int plane = intel_crtc->plane;
+	int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
+	int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
+	int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
+	int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
+	int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
+	int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
+	int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
+	int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
+	int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
+	int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
+	int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
+	int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
+	int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
+	int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B;
+	int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B;
+	int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B;
+	int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B;
+	int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B;
+	int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B;
+	int trans_dpll_sel = (pipe == 0) ? 0 : 1;
+	u32 temp;
+	u32 pipe_bpc;
+
+	temp = I915_READ(pipeconf_reg);
+	pipe_bpc = temp & PIPE_BPC_MASK;
+
+	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+		temp = I915_READ(PCH_LVDS);
+		if ((temp & LVDS_PORT_EN) == 0) {
+			I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
+			POSTING_READ(PCH_LVDS);
+		}
+	}
+
+	ironlake_fdi_enable(crtc);
 
 	/* Enable panel fitting for LVDS */
 	if (dev_priv->pch_pf_size &&