drm/i915: Remove queue_flip pointer.

With the removal of cs support this is no longer reachable.
Can be revived if needed.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463490484-19540-15-git-send-email-maarten.lankhorst@linux.intel.com
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>

drivers/gpu/drm/i915/i915_drv.h

@@ -618,11 +618,6 @@ struct drm_i915_display_funcs {
 	void (*audio_codec_disable)(struct intel_encoder *encoder);
 	void (*fdi_link_train)(struct drm_crtc *crtc);
 	void (*init_clock_gating)(struct drm_device *dev);
-	int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
-			  struct drm_framebuffer *fb,
-			  struct drm_i915_gem_object *obj,
-			  struct drm_i915_gem_request *req,
-			  uint64_t gtt_offset);
 	void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
 	/* clock updates for mode set */
 	/* cursor updates */

drivers/gpu/drm/i915/intel_display.c

@@ -10964,237 +10964,6 @@ void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
 	spin_unlock_irqrestore(&dev->event_lock, flags);
 }
 
-static int intel_gen2_queue_flip(struct drm_device *dev,
-				 struct drm_crtc *crtc,
-				 struct drm_framebuffer *fb,
-				 struct drm_i915_gem_object *obj,
-				 struct drm_i915_gem_request *req,
-				 uint64_t gtt_offset)
-{
-	struct intel_engine_cs *engine = req->engine;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	u32 flip_mask;
-	int ret;
-
-	ret = intel_ring_begin(req, 6);
-	if (ret)
-		return ret;
-
-	/* Can't queue multiple flips, so wait for the previous
-	 * one to finish before executing the next.
-	 */
-	if (intel_crtc->plane)
-		flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
-	else
-		flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
-	intel_ring_emit(engine, MI_WAIT_FOR_EVENT | flip_mask);
-	intel_ring_emit(engine, MI_NOOP);
-	intel_ring_emit(engine, MI_DISPLAY_FLIP |
-			MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
-	intel_ring_emit(engine, fb->pitches[0]);
-	intel_ring_emit(engine, gtt_offset);
-	intel_ring_emit(engine, 0); /* aux display base address, unused */
-
-	return 0;
-}
-
-static int intel_gen3_queue_flip(struct drm_device *dev,
-				 struct drm_crtc *crtc,
-				 struct drm_framebuffer *fb,
-				 struct drm_i915_gem_object *obj,
-				 struct drm_i915_gem_request *req,
-				 uint64_t gtt_offset)
-{
-	struct intel_engine_cs *engine = req->engine;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	u32 flip_mask;
-	int ret;
-
-	ret = intel_ring_begin(req, 6);
-	if (ret)
-		return ret;
-
-	if (intel_crtc->plane)
-		flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
-	else
-		flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
-	intel_ring_emit(engine, MI_WAIT_FOR_EVENT | flip_mask);
-	intel_ring_emit(engine, MI_NOOP);
-	intel_ring_emit(engine, MI_DISPLAY_FLIP_I915 |
-			MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
-	intel_ring_emit(engine, fb->pitches[0]);
-	intel_ring_emit(engine, gtt_offset);
-	intel_ring_emit(engine, MI_NOOP);
-
-	return 0;
-}
-
-static int intel_gen4_queue_flip(struct drm_device *dev,
-				 struct drm_crtc *crtc,
-				 struct drm_framebuffer *fb,
-				 struct drm_i915_gem_object *obj,
-				 struct drm_i915_gem_request *req,
-				 uint64_t gtt_offset)
-{
-	struct intel_engine_cs *engine = req->engine;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	uint32_t pf, pipesrc;
-	int ret;
-
-	ret = intel_ring_begin(req, 4);
-	if (ret)
-		return ret;
-
-	/* i965+ uses the linear or tiled offsets from the
-	 * Display Registers (which do not change across a page-flip)
-	 * so we need only reprogram the base address.
-	 */
-	intel_ring_emit(engine, MI_DISPLAY_FLIP |
-			MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
-	intel_ring_emit(engine, fb->pitches[0]);
-	intel_ring_emit(engine, gtt_offset | obj->tiling_mode);
-
-	/* XXX Enabling the panel-fitter across page-flip is so far
-	 * untested on non-native modes, so ignore it for now.
-	 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
-	 */
-	pf = 0;
-	pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
-	intel_ring_emit(engine, pf | pipesrc);
-
-	return 0;
-}
-
-static int intel_gen6_queue_flip(struct drm_device *dev,
-				 struct drm_crtc *crtc,
-				 struct drm_framebuffer *fb,
-				 struct drm_i915_gem_object *obj,
-				 struct drm_i915_gem_request *req,
-				 uint64_t gtt_offset)
-{
-	struct intel_engine_cs *engine = req->engine;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	uint32_t pf, pipesrc;
-	int ret;
-
-	ret = intel_ring_begin(req, 4);
-	if (ret)
-		return ret;
-
-	intel_ring_emit(engine, MI_DISPLAY_FLIP |
-			MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
-	intel_ring_emit(engine, fb->pitches[0] | obj->tiling_mode);
-	intel_ring_emit(engine, gtt_offset);
-
-	/* Contrary to the suggestions in the documentation,
-	 * "Enable Panel Fitter" does not seem to be required when page
-	 * flipping with a non-native mode, and worse causes a normal
-	 * modeset to fail.
-	 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
-	 */
-	pf = 0;
-	pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
-	intel_ring_emit(engine, pf | pipesrc);
-
-	return 0;
-}
-
-static int intel_gen7_queue_flip(struct drm_device *dev,
-				 struct drm_crtc *crtc,
-				 struct drm_framebuffer *fb,
-				 struct drm_i915_gem_object *obj,
-				 struct drm_i915_gem_request *req,
-				 uint64_t gtt_offset)
-{
-	struct intel_engine_cs *engine = req->engine;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	uint32_t plane_bit = 0;
-	int len, ret;
-
-	switch (intel_crtc->plane) {
-	case PLANE_A:
-		plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
-		break;
-	case PLANE_B:
-		plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
-		break;
-	case PLANE_C:
-		plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
-		break;
-	default:
-		WARN_ONCE(1, "unknown plane in flip command\n");
-		return -ENODEV;
-	}
-
-	len = 4;
-	if (engine->id == RCS) {
-		len += 6;
-		/*
-		 * On Gen 8, SRM is now taking an extra dword to accommodate
-		 * 48bits addresses, and we need a NOOP for the batch size to
-		 * stay even.
-		 */
-		if (IS_GEN8(dev))
-			len += 2;
-	}
-
-	/*
-	 * BSpec MI_DISPLAY_FLIP for IVB:
-	 * "The full packet must be contained within the same cache line."
-	 *
-	 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
-	 * cacheline, if we ever start emitting more commands before
-	 * the MI_DISPLAY_FLIP we may need to first emit everything else,
-	 * then do the cacheline alignment, and finally emit the
-	 * MI_DISPLAY_FLIP.
-	 */
-	ret = intel_ring_cacheline_align(req);
-	if (ret)
-		return ret;
-
-	ret = intel_ring_begin(req, len);
-	if (ret)
-		return ret;
-
-	/* Unmask the flip-done completion message. Note that the bspec says that
-	 * we should do this for both the BCS and RCS, and that we must not unmask
-	 * more than one flip event at any time (or ensure that one flip message
-	 * can be sent by waiting for flip-done prior to queueing new flips).
-	 * Experimentation says that BCS works despite DERRMR masking all
-	 * flip-done completion events and that unmasking all planes at once
-	 * for the RCS also doesn't appear to drop events. Setting the DERRMR
-	 * to zero does lead to lockups within MI_DISPLAY_FLIP.
-	 */
-	if (engine->id == RCS) {
-		intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1));
-		intel_ring_emit_reg(engine, DERRMR);
-		intel_ring_emit(engine, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
-					  DERRMR_PIPEB_PRI_FLIP_DONE |
-					  DERRMR_PIPEC_PRI_FLIP_DONE));
-		if (IS_GEN8(dev))
-			intel_ring_emit(engine, MI_STORE_REGISTER_MEM_GEN8 |
-					      MI_SRM_LRM_GLOBAL_GTT);
-		else
-			intel_ring_emit(engine, MI_STORE_REGISTER_MEM |
-					      MI_SRM_LRM_GLOBAL_GTT);
-		intel_ring_emit_reg(engine, DERRMR);
-		intel_ring_emit(engine, engine->scratch.gtt_offset + 256);
-		if (IS_GEN8(dev)) {
-			intel_ring_emit(engine, 0);
-			intel_ring_emit(engine, MI_NOOP);
-		}
-	}
-
-	intel_ring_emit(engine, MI_DISPLAY_FLIP_I915 | plane_bit);
-	intel_ring_emit(engine, (fb->pitches[0] | obj->tiling_mode));
-	intel_ring_emit(engine, gtt_offset);
-	intel_ring_emit(engine, (MI_NOOP));
-
-	return 0;
-}
-
 static void intel_mmio_flip_work_func(struct work_struct *w)
 {
 	struct intel_flip_work *work =
@@ -14752,34 +14521,6 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
 		dev_priv->display.modeset_calc_cdclk =
 			broxton_modeset_calc_cdclk;
 	}
-
-	switch (INTEL_INFO(dev_priv)->gen) {
-	case 2:
-		dev_priv->display.queue_flip = intel_gen2_queue_flip;
-		break;
-
-	case 3:
-		dev_priv->display.queue_flip = intel_gen3_queue_flip;
-		break;
-
-	case 4:
-	case 5:
-		dev_priv->display.queue_flip = intel_gen4_queue_flip;
-		break;
-
-	case 6:
-		dev_priv->display.queue_flip = intel_gen6_queue_flip;
-		break;
-	case 7:
-	case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
-		dev_priv->display.queue_flip = intel_gen7_queue_flip;
-		break;
-	case 9:
-		/* Drop through - unsupported since execlist only. */
-	default:
-		/* Default just returns -ENODEV to indicate unsupported */
-		break;
-	}
 }
 
 /*