[Intel-gfx] [PATCH 2/4] drm/i915: Introduce a vfunc for platform-specfic MMIO flip code

[Damien Lespiau]

SKL will specialize it.

Signed-off-by: Damien Lespiau <damien.lesp...@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      |  1 +
 drivers/gpu/drm/i915/intel_display.c | 17 +++++++++++++----
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 627b7e7..d979549 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -492,6 +492,7 @@ struct drm_i915_display_funcs {
                          struct drm_i915_gem_object *obj,
                          struct intel_engine_cs *ring,
                          uint32_t flags);
+       void (*do_mmio_flip)(struct intel_crtc *crtc);
        void (*update_primary_plane)(struct drm_crtc *crtc,
                                     struct drm_framebuffer *fb,
                                     int x, int y);
diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index 5133ef9..07440ad 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9552,7 +9552,7 @@ static bool use_mmio_flip(struct intel_engine_cs *ring,
                return ring != obj->ring;
 }
 
-static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
+static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc)
 {
        struct drm_device *dev = intel_crtc->base.dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
@@ -9561,9 +9561,6 @@ static void intel_do_mmio_flip(struct intel_crtc 
*intel_crtc)
        struct drm_i915_gem_object *obj = intel_fb->obj;
        u32 dspcntr;
        u32 reg;
-
-       intel_mark_page_flip_active(intel_crtc);
-
        reg = DSPCNTR(intel_crtc->plane);
        dspcntr = I915_READ(reg);
 
@@ -9579,6 +9576,15 @@ static void intel_do_mmio_flip(struct intel_crtc 
*intel_crtc)
        POSTING_READ(DSPSURF(intel_crtc->plane));
 }
 
+static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
+{
+       struct drm_device *dev = intel_crtc->base.dev;
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       intel_mark_page_flip_active(intel_crtc);
+       dev_priv->display.do_mmio_flip(intel_crtc);
+}
+
 static int intel_postpone_flip(struct drm_i915_gem_object *obj)
 {
        struct intel_engine_cs *ring;
@@ -12694,6 +12700,9 @@ static void intel_init_display(struct drm_device *dev)
                break;
        }
 
+       if (INTEL_INFO(dev)->gen >= 5)
+               dev_priv->display.do_mmio_flip = ilk_do_mmio_flip;
+
        intel_panel_init_backlight_funcs(dev);
 
        mutex_init(&dev_priv->pps_mutex);
-- 
1.8.3.1

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