drm/i915: Split chv_update_pll() apart

Split chv_update_pll() into two parts ala:
 commit bdd4b6a655749970cc632aafc5fd596c07b60b1c
 Author: Daniel Vetter <daniel.vetter@ffwll.ch>
 Date:   Thu Apr 24 23:55:11 2014 +0200

    drm/i915: Extract vlv_prepare_pll

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6ca53b3..60ba696 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -100,6 +100,7 @@ static void ironlake_set_pipeconf(struct drm_crtc *crtc);
 static void haswell_set_pipeconf(struct drm_crtc *crtc);
 static void intel_set_pipe_csc(struct drm_crtc *crtc);
 static void vlv_prepare_pll(struct intel_crtc *crtc);
+static void chv_prepare_pll(struct intel_crtc *crtc);
 
 static struct intel_encoder *intel_find_encoder(struct intel_connector *connector, int pipe)
 {
@@ -4642,8 +4643,12 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc)
 
        is_dsi = intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI);
 
-       if (!is_dsi && !IS_CHERRYVIEW(dev))
-               vlv_prepare_pll(intel_crtc);
+       if (!is_dsi) {
+               if (IS_CHERRYVIEW(dev))
+                       chv_prepare_pll(intel_crtc);
+               else
+                       vlv_prepare_pll(intel_crtc);
+       }
 
        /* Set up the display plane register */
        dspcntr = DISPPLANE_GAMMA_ENABLE;
@@ -5692,6 +5697,18 @@ static void vlv_prepare_pll(struct intel_crtc *crtc)
 
 static void chv_update_pll(struct intel_crtc *crtc)
 {
+       crtc->config.dpll_hw_state.dpll = DPLL_SSC_REF_CLOCK_CHV |
+               DPLL_REFA_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
+               DPLL_VCO_ENABLE;
+       if (crtc->pipe != PIPE_A)
+               crtc->config.dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+       crtc->config.dpll_hw_state.dpll_md =
+               (crtc->config.pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+}
+
+static void chv_prepare_pll(struct intel_crtc *crtc)
+{
        struct drm_device *dev = crtc->base.dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
        int pipe = crtc->pipe;
@@ -5701,15 +5718,6 @@ static void chv_update_pll(struct intel_crtc *crtc)
        u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
        int refclk;
 
-       crtc->config.dpll_hw_state.dpll = DPLL_SSC_REF_CLOCK_CHV |
-               DPLL_REFA_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
-               DPLL_VCO_ENABLE;
-       if (pipe != PIPE_A)
-               crtc->config.dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
-
-       crtc->config.dpll_hw_state.dpll_md =
-               (crtc->config.pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
-
        bestn = crtc->config.dpll.n;
        bestm2_frac = crtc->config.dpll.m2 & 0x3fffff;
        bestm1 = crtc->config.dpll.m1;