drm/i915: Move shared dpll code to a new file

Create the new file intel_dpll_mgr.c and move the shared dpll code to
it. Follow up patches that reorganize pll handling will move more code
there and tweak the interface.

No functional changes.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1457451987-17466-2-git-send-email-ander.conselvan.de.oliveira@intel.com

drivers/gpu/drm/i915/Makefile

@@ -56,6 +56,7 @@ i915-y += intel_audio.o \
 	  intel_atomic_plane.o \
 	  intel_bios.o \
 	  intel_display.o \
+	  intel_dpll_mgr.o \
 	  intel_fbc.o \
 	  intel_fifo_underrun.o \
 	  intel_frontbuffer.o \

drivers/gpu/drm/i915/intel_drv.h

@@ -1201,6 +1201,9 @@ intel_rotation_90_or_270(unsigned int rotation)
 void intel_create_rotation_property(struct drm_device *dev,
 					struct intel_plane *plane);
 
+void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
+				    enum pipe pipe);
+
 /* shared dpll functions */
 struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);
 void assert_shared_dpll(struct drm_i915_private *dev_priv,
@@ -1210,6 +1213,11 @@ void assert_shared_dpll(struct drm_i915_private *dev_priv,
 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
 						struct intel_crtc_state *state);
+void intel_prepare_shared_dpll(struct intel_crtc *crtc);
+void intel_enable_shared_dpll(struct intel_crtc *crtc);
+void intel_disable_shared_dpll(struct intel_crtc *crtc);
+void intel_shared_dpll_commit(struct drm_atomic_state *state);
+void intel_shared_dpll_init(struct drm_device *dev);
 
 int vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
 		     const struct dpll *dpll);