drm/i915: Extract the HSW/BDW shared dpll init code

So we can easily provide an alternate implementation in the future.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 5db0b55..ee7a74c 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1248,10 +1248,8 @@ static const char * const hsw_ddi_pll_names[] = {
        "WRPLL 2",
 };
 
-void intel_ddi_pll_init(struct drm_device *dev)
+static void hsw_shared_dplls_init(struct drm_i915_private *dev_priv)
 {
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       uint32_t val = I915_READ(LCPLL_CTL);
        int i;
 
        dev_priv->num_shared_dpll = 2;
@@ -1264,6 +1262,14 @@ void intel_ddi_pll_init(struct drm_device *dev)
                dev_priv->shared_dplls[i].get_hw_state =
                        hsw_ddi_pll_get_hw_state;
        }
+}
+
+void intel_ddi_pll_init(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       uint32_t val = I915_READ(LCPLL_CTL);
+
+       hsw_shared_dplls_init(dev_priv);
 
        /* The LCPLL register should be turned on by the BIOS. For now let's
         * just check its state and print errors in case something is wrong.