[16/24] drm/i915: atomic plane updates in a nutshell

Submitted by Maarten Lankhorst on June 1, 2015, 1:27 p.m.

Details

Message ID 1433165247-15928-17-git-send-email-maarten.lankhorst@linux.intel.com
State New
Headers show

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Commit Message

Maarten Lankhorst June 1, 2015, 1:27 p.m.
Now that all planes are added during a modeset we can use the
calculated changes before disabling a plane, and then either commit
or force disable a plane before disabling the crtc.

The code is shared with atomic_begin/flush, except watermark updating
and vblank evasion are not used.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 124 ++++++++---------------------------
 drivers/gpu/drm/i915/intel_sprite.c  |   3 -
 2 files changed, 29 insertions(+), 98 deletions(-)

Patch hide | download patch | download mbox

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 12da97d9f386..e2a1c4c01032 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -109,8 +109,6 @@  static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_cr
 	struct intel_crtc_state *crtc_state);
 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
 			   int num_connectors);
-static void intel_crtc_enable_planes(struct drm_crtc *crtc);
-static void intel_crtc_disable_planes(struct drm_crtc *crtc);
 
 static struct intel_encoder *intel_find_encoder(struct intel_connector *connector, int pipe)
 {
@@ -2215,28 +2213,6 @@  static void intel_disable_pipe(struct intel_crtc *crtc)
 		intel_wait_for_pipe_off(crtc);
 }
 
-/**
- * intel_enable_primary_hw_plane - enable the primary plane on a given pipe
- * @plane:  plane to be enabled
- * @crtc: crtc for the plane
- *
- * Enable @plane on @crtc, making sure that the pipe is running first.
- */
-static void intel_enable_primary_hw_plane(struct drm_plane *plane,
-					  struct drm_crtc *crtc)
-{
-	struct drm_device *dev = plane->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
-	/* If the pipe isn't enabled, we can't pump pixels and may hang */
-	assert_pipe_enabled(dev_priv, intel_crtc->pipe);
-	to_intel_plane_state(plane->state)->visible = true;
-
-	dev_priv->display.update_primary_plane(crtc, plane->fb,
-					       crtc->x, crtc->y);
-}
-
 static bool need_vtd_wa(struct drm_device *dev)
 {
 #ifdef CONFIG_INTEL_IOMMU
@@ -4501,20 +4477,6 @@  static void ironlake_pfit_enable(struct intel_crtc *crtc)
 	}
 }
 
-static void intel_enable_sprite_planes(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	enum pipe pipe = to_intel_crtc(crtc)->pipe;
-	struct drm_plane *plane;
-	struct intel_plane *intel_plane;
-
-	drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
-		intel_plane = to_intel_plane(plane);
-		if (intel_plane->pipe == pipe)
-			intel_plane_restore(&intel_plane->base);
-	}
-}
-
 void hsw_enable_ips(struct intel_crtc *crtc)
 {
 	struct drm_device *dev = crtc->base.dev;
@@ -4815,51 +4777,31 @@  static void intel_pre_plane_update(struct intel_crtc *crtc)
 
 static void intel_crtc_enable_planes(struct drm_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
-
-	intel_enable_primary_hw_plane(crtc->primary, crtc);
-	intel_enable_sprite_planes(crtc);
-	intel_crtc_update_cursor(crtc, true);
+	struct drm_plane *p;
 
-	intel_post_enable_primary(crtc);
+	drm_for_each_plane_mask(p, crtc->dev, crtc->state->plane_mask) {
+		struct intel_plane *plane = to_intel_plane(p);
 
-	/*
-	 * FIXME: Once we grow proper nuclear flip support out of this we need
-	 * to compute the mask of flip planes precisely. For the time being
-	 * consider this a flip to a NULL plane.
-	 */
-	intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
+		plane->commit_plane(p, to_intel_plane_state(p->state));
+	}
 }
 
-static void intel_crtc_disable_planes(struct drm_crtc *crtc)
+static void intel_crtc_disable_planes(struct drm_crtc *crtc,
+				      struct drm_crtc_state *old_crtc_state)
 {
-	struct drm_device *dev = crtc->dev;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct intel_plane *intel_plane;
-	int pipe = intel_crtc->pipe;
-
-	intel_crtc_wait_for_pending_flips(crtc);
-
-	intel_pre_disable_primary(crtc);
+	struct drm_plane *p;
 
 	intel_crtc_dpms_overlay_disable(intel_crtc);
-	for_each_intel_plane(dev, intel_plane) {
-		if (intel_plane->pipe == pipe) {
-			struct drm_crtc *from = intel_plane->base.crtc;
 
-			intel_plane->disable_plane(&intel_plane->base,
-						   from ?: crtc, true);
-		}
-	}
+	drm_for_each_plane_mask(p, crtc->dev, old_crtc_state->plane_mask) {
+		struct intel_plane *plane = to_intel_plane(p);
 
-	/*
-	 * FIXME: Once we grow proper nuclear flip support out of this we need
-	 * to compute the mask of flip planes precisely. For the time being
-	 * consider this a flip to a NULL plane.
-	 */
-	intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
+		if (crtc->state->active)
+			plane->disable_plane(p, crtc, true);
+		else
+			plane->commit_plane(p, to_intel_plane_state(p->state));
+	}
 }
 
 static void ironlake_crtc_enable(struct drm_crtc *crtc)
@@ -11505,10 +11447,6 @@  int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
 	if (old_plane_state->base.fb && !fb)
 		intel_crtc->atomic.disabled_planes |= 1 << i;
 
-	/* don't run rest during modeset yet */
-	if (!intel_crtc->active || mode_changed)
-		return 0;
-
 	DRM_DEBUG_ATOMIC("[CRTC:%i] was enabled %i now enabled: %i\n",
 			 idx, was_crtc_enabled, is_crtc_enabled);
 
@@ -12895,11 +12833,11 @@  static int __intel_set_mode(struct drm_atomic_state *state)
 			continue;
 
 		any_ms = true;
-		if (!crtc_state->active)
-			continue;
-
-		intel_crtc_disable_planes(crtc);
-		dev_priv->display.crtc_disable(crtc);
+		intel_pre_plane_update(to_intel_crtc(crtc));
+		if (crtc_state->active) {
+			intel_crtc_disable_planes(crtc, crtc_state);
+			dev_priv->display.crtc_disable(crtc);
+		}
 	}
 
 	/* Only after disabling all output pipelines that will be changed can we
@@ -12913,15 +12851,17 @@  static int __intel_set_mode(struct drm_atomic_state *state)
 
 	/* Now enable the clocks, plane, pipe, and connectors that we set up. */
 	for_each_crtc_in_state(state, crtc, crtc_state, i) {
-		drm_atomic_helper_commit_planes_on_crtc(crtc_state);
-
-		if (!needs_modeset(crtc->state) || !crtc->state->active)
+		if (!needs_modeset(crtc->state)) {
+			drm_atomic_helper_commit_planes_on_crtc(crtc_state);
 			continue;
+		}
 
-		update_scanline_offset(to_intel_crtc(crtc));
-
-		dev_priv->display.crtc_enable(crtc);
-		intel_crtc_enable_planes(crtc);
+		if (crtc->state->active) {
+			update_scanline_offset(to_intel_crtc(crtc));
+			dev_priv->display.crtc_enable(crtc);
+			intel_crtc_enable_planes(crtc);
+		}
+		intel_post_plane_update(to_intel_crtc(crtc));
 	}
 
 	/* FIXME: add subpixel order */
@@ -13498,9 +13438,6 @@  intel_commit_primary_plane(struct drm_plane *plane,
 	crtc->x = src->x1 >> 16;
 	crtc->y = src->y1 >> 16;
 
-	if (!intel_crtc->active)
-		return;
-
 	if (state->visible)
 		/* FIXME: kill this fastboot hack */
 		intel_update_pipe_size(intel_crtc);
@@ -13758,9 +13695,6 @@  intel_commit_cursor_plane(struct drm_plane *plane,
 	crtc->cursor_x = state->base.crtc_x;
 	crtc->cursor_y = state->base.crtc_y;
 
-	if (!intel_crtc->active)
-		return;
-
 	if (intel_crtc->cursor_bo == obj)
 		goto update;
 
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 6b5d25f2a90b..5443e16f307e 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -936,9 +936,6 @@  intel_commit_sprite_plane(struct drm_plane *plane,
 
 	plane->fb = fb;
 
-	if (!intel_crtc->active)
-		return;
-
 	if (state->visible) {
 		intel_plane->update_plane(plane, crtc, fb,
 					  state->dst.x1, state->dst.y1,