Linux-libre 4.3.2-gnu

1 files changed, 44 insertions, 57 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 644b4b76e..ed28823d3 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -19,21 +19,15 @@
 
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_drv.h"
-#include "exynos_drm_encoder.h"
 #include "exynos_drm_plane.h"
 
 static void exynos_drm_crtc_enable(struct drm_crtc *crtc)
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
 
-	if (exynos_crtc->enabled)
-		return;
-
 	if (exynos_crtc->ops->enable)
 		exynos_crtc->ops->enable(exynos_crtc);
 
-	exynos_crtc->enabled = true;
-
 	drm_crtc_vblank_on(crtc);
 }
 
@@ -41,34 +35,10 @@ static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
 
-	if (!exynos_crtc->enabled)
-		return;
-
-	/* wait for the completion of page flip. */
-	if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
-				(exynos_crtc->event == NULL), HZ/20))
-		exynos_crtc->event = NULL;
-
 	drm_crtc_vblank_off(crtc);
 
 	if (exynos_crtc->ops->disable)
 		exynos_crtc->ops->disable(exynos_crtc);
-
-	exynos_crtc->enabled = false;
-}
-
-static bool
-exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
-			    const struct drm_display_mode *mode,
-			    struct drm_display_mode *adjusted_mode)
-{
-	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
-
-	if (exynos_crtc->ops->mode_fixup)
-		return exynos_crtc->ops->mode_fixup(exynos_crtc, mode,
-						    adjusted_mode);
-
-	return true;
 }
 
 static void
@@ -80,24 +50,41 @@ exynos_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
 		exynos_crtc->ops->commit(exynos_crtc);
 }
 
-static void exynos_crtc_atomic_begin(struct drm_crtc *crtc)
+static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
+				     struct drm_crtc_state *old_crtc_state)
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+	struct drm_plane *plane;
+
+	exynos_crtc->event = crtc->state->event;
+
+	drm_atomic_crtc_for_each_plane(plane, crtc) {
+		struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
 
-	if (crtc->state->event) {
-		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
-		exynos_crtc->event = crtc->state->event;
+		if (exynos_crtc->ops->atomic_begin)
+			exynos_crtc->ops->atomic_begin(exynos_crtc,
+							exynos_plane);
 	}
 }
 
-static void exynos_crtc_atomic_flush(struct drm_crtc *crtc)
+static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
+				     struct drm_crtc_state *old_crtc_state)
 {
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+	struct drm_plane *plane;
+
+	drm_atomic_crtc_for_each_plane(plane, crtc) {
+		struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
+
+		if (exynos_crtc->ops->atomic_flush)
+			exynos_crtc->ops->atomic_flush(exynos_crtc,
+							exynos_plane);
+	}
 }
 
 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
 	.enable		= exynos_drm_crtc_enable,
 	.disable	= exynos_drm_crtc_disable,
-	.mode_fixup	= exynos_drm_crtc_mode_fixup,
 	.mode_set_nofb	= exynos_drm_crtc_mode_set_nofb,
 	.atomic_begin	= exynos_crtc_atomic_begin,
 	.atomic_flush	= exynos_crtc_atomic_flush,
@@ -139,13 +126,13 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 	if (!exynos_crtc)
 		return ERR_PTR(-ENOMEM);
 
-	init_waitqueue_head(&exynos_crtc->pending_flip_queue);
-
 	exynos_crtc->pipe = pipe;
 	exynos_crtc->type = type;
 	exynos_crtc->ops = ops;
 	exynos_crtc->ctx = ctx;
 
+	init_waitqueue_head(&exynos_crtc->wait_update);
+
 	crtc = &exynos_crtc->base;
 
 	private->crtc[pipe] = crtc;
@@ -171,11 +158,8 @@ int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
 	struct exynos_drm_crtc *exynos_crtc =
 		to_exynos_crtc(private->crtc[pipe]);
 
-	if (!exynos_crtc->enabled)
-		return -EPERM;
-
 	if (exynos_crtc->ops->enable_vblank)
-		exynos_crtc->ops->enable_vblank(exynos_crtc);
+		return exynos_crtc->ops->enable_vblank(exynos_crtc);
 
 	return 0;
 }
@@ -186,31 +170,34 @@ void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
 	struct exynos_drm_crtc *exynos_crtc =
 		to_exynos_crtc(private->crtc[pipe]);
 
-	if (!exynos_crtc->enabled)
-		return;
-
 	if (exynos_crtc->ops->disable_vblank)
 		exynos_crtc->ops->disable_vblank(exynos_crtc);
 }
 
-void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int pipe)
+void exynos_drm_crtc_wait_pending_update(struct exynos_drm_crtc *exynos_crtc)
+{
+	wait_event_timeout(exynos_crtc->wait_update,
+			   (atomic_read(&exynos_crtc->pending_update) == 0),
+			   msecs_to_jiffies(50));
+}
+
+void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
+				struct exynos_drm_plane *exynos_plane)
 {
-	struct exynos_drm_private *dev_priv = dev->dev_private;
-	struct drm_crtc *drm_crtc = dev_priv->crtc[pipe];
-	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(drm_crtc);
+	struct drm_crtc *crtc = &exynos_crtc->base;
 	unsigned long flags;
 
-	spin_lock_irqsave(&dev->event_lock, flags);
-	if (exynos_crtc->event) {
+	exynos_plane->pending_fb = NULL;
 
-		drm_send_vblank_event(dev, -1, exynos_crtc->event);
-		drm_vblank_put(dev, pipe);
-		wake_up(&exynos_crtc->pending_flip_queue);
+	if (atomic_dec_and_test(&exynos_crtc->pending_update))
+		wake_up(&exynos_crtc->wait_update);
 
-	}
+	spin_lock_irqsave(&crtc->dev->event_lock, flags);
+	if (exynos_crtc->event)
+		drm_crtc_send_vblank_event(crtc, exynos_crtc->event);
 
 	exynos_crtc->event = NULL;
-	spin_unlock_irqrestore(&dev->event_lock, flags);
+	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 }
 
 void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
@@ -237,7 +224,7 @@ void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
 }
 
 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
-					unsigned int out_type)
+				       enum exynos_drm_output_type out_type)
 {
 	struct drm_crtc *crtc;