drm/i915: Initialize drm_driver vblank funcs at compile time

Move the .get_vblank_timestamp() and .get_scanout_position()
initialization to happen at compile time. No point in delaying
it since we always assign the same functions.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190619170842.20579-5-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/i915_drv.c

@@ -3232,6 +3232,9 @@ static struct drm_driver driver = {
 	.gem_prime_export = i915_gem_prime_export,
 	.gem_prime_import = i915_gem_prime_import,
 
+	.get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos,
+	.get_scanout_position = i915_get_crtc_scanoutpos,
+
 	.dumb_create = i915_gem_dumb_create,
 	.dumb_map_offset = i915_gem_mmap_gtt,
 	.ioctls = i915_ioctls,

drivers/gpu/drm/i915/i915_irq.c

@@ -1109,10 +1109,10 @@ static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
 	return (position + crtc->scanline_offset) % vtotal;
 }
 
-static bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
-				     bool in_vblank_irq, int *vpos, int *hpos,
-				     ktime_t *stime, ktime_t *etime,
-				     const struct drm_display_mode *mode)
+bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
+			      bool in_vblank_irq, int *vpos, int *hpos,
+			      ktime_t *stime, ktime_t *etime,
+			      const struct drm_display_mode *mode)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct intel_crtc *intel_crtc = intel_get_crtc_for_pipe(dev_priv,
@@ -4789,9 +4789,6 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 	 */
 	dev_priv->hotplug.hpd_short_storm_enabled = !HAS_DP_MST(dev_priv);
 
-	dev->driver->get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos;
-	dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
-
 	if (HAS_GMCH(dev_priv)) {
 		if (I915_HAS_HOTPLUG(dev_priv))
 			dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;

drivers/gpu/drm/i915/i915_irq.h

@@ -114,6 +114,11 @@ void gen11_reset_guc_interrupts(struct drm_i915_private *i915);
 void gen11_enable_guc_interrupts(struct drm_i915_private *i915);
 void gen11_disable_guc_interrupts(struct drm_i915_private *i915);
 
+bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
+			      bool in_vblank_irq, int *vpos, int *hpos,
+			      ktime_t *stime, ktime_t *etime,
+			      const struct drm_display_mode *mode);
+
 u32 i915_get_vblank_counter(struct drm_crtc *crtc);
 u32 g4x_get_vblank_counter(struct drm_crtc *crtc);