drm/i915: Split shared dpll setup out of __intel_set_mode()

This simplifies __intel_set_mode() a little.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
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 423ef95..3d220a6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11021,6 +11021,36 @@ out:
        return pipe_config;
 }
 
+static int __intel_set_mode_setup_plls(struct drm_device *dev,
+                                      unsigned modeset_pipes,
+                                      unsigned disable_pipes)
+{
+       struct drm_i915_private *dev_priv = to_i915(dev);
+       unsigned clear_pipes = modeset_pipes | disable_pipes;
+       struct intel_crtc *intel_crtc;
+       int ret = 0;
+
+       if (!dev_priv->display.crtc_compute_clock)
+               return 0;
+
+       ret = intel_shared_dpll_start_config(dev_priv, clear_pipes);
+       if (ret)
+               goto done;
+
+       for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
+               struct intel_crtc_state *state = intel_crtc->new_config;
+               ret = dev_priv->display.crtc_compute_clock(intel_crtc,
+                                                          state);
+               if (ret) {
+                       intel_shared_dpll_abort_config(dev_priv);
+                       goto done;
+               }
+       }
+
+done:
+       return ret;
+}
+
 static int __intel_set_mode(struct drm_crtc *crtc,
                            struct drm_display_mode *mode,
                            int x, int y, struct drm_framebuffer *fb,
@@ -11058,23 +11088,9 @@ static int __intel_set_mode(struct drm_crtc *crtc,
                prepare_pipes &= ~disable_pipes;
        }
 
-       if (dev_priv->display.crtc_compute_clock) {
-               unsigned clear_pipes = modeset_pipes | disable_pipes;
-
-               ret = intel_shared_dpll_start_config(dev_priv, clear_pipes);
-               if (ret)
-                       goto done;
-
-               for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
-                       struct intel_crtc_state *state = intel_crtc->new_config;
-                       ret = dev_priv->display.crtc_compute_clock(intel_crtc,
-                                                                  state);
-                       if (ret) {
-                               intel_shared_dpll_abort_config(dev_priv);
-                               goto done;
-                       }
-               }
-       }
+       ret = __intel_set_mode_setup_plls(dev, modeset_pipes, disable_pipes);
+       if (ret)
+               goto done;
 
        for_each_intel_crtc_masked(dev, disable_pipes, intel_crtc)
                intel_crtc_disable(&intel_crtc->base);