Merge tag 'v4.15-rc1' into next-seccomp

Linux 4.15-rc1

1 files changed, 61 insertions, 16 deletions

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index d524ed0d5146..6ef4d1a1e3a9 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -24,6 +24,7 @@
 #include <linux/completion.h>
 #include <linux/dma-mapping.h>
 #include <linux/of_graph.h>
+#include <linux/math64.h>
 
 #include "tilcdc_drv.h"
 #include "tilcdc_regs.h"
@@ -48,6 +49,7 @@ struct tilcdc_crtc {
 	unsigned int lcd_fck_rate;
 
 	ktime_t last_vblank;
+	unsigned int hvtotal_us;
 
 	struct drm_framebuffer *curr_fb;
 	struct drm_framebuffer *next_fb;
@@ -75,7 +77,7 @@ static void unref_worker(struct drm_flip_work *work, void *val)
 	struct drm_device *dev = tilcdc_crtc->base.dev;
 
 	mutex_lock(&dev->mode_config.mutex);
-	drm_framebuffer_unreference(val);
+	drm_framebuffer_put(val);
 	mutex_unlock(&dev->mode_config.mutex);
 }
 
@@ -292,6 +294,12 @@ static void tilcdc_crtc_set_clk(struct drm_crtc *crtc)
 				LCDC_V2_CORE_CLK_EN);
 }
 
+uint tilcdc_mode_hvtotal(const struct drm_display_mode *mode)
+{
+	return (uint) div_u64(1000llu * mode->htotal * mode->vtotal,
+			      mode->clock);
+}
+
 static void tilcdc_crtc_set_mode(struct drm_crtc *crtc)
 {
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
@@ -456,9 +464,12 @@ static void tilcdc_crtc_set_mode(struct drm_crtc *crtc)
 
 	set_scanout(crtc, fb);
 
-	drm_framebuffer_reference(fb);
+	drm_framebuffer_get(fb);
 
 	crtc->hwmode = crtc->state->adjusted_mode;
+
+	tilcdc_crtc->hvtotal_us =
+		tilcdc_mode_hvtotal(&crtc->hwmode);
 }
 
 static void tilcdc_crtc_enable(struct drm_crtc *crtc)
@@ -467,7 +478,6 @@ static void tilcdc_crtc_enable(struct drm_crtc *crtc)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	unsigned long flags;
 
-	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
 	mutex_lock(&tilcdc_crtc->enable_lock);
 	if (tilcdc_crtc->enabled || tilcdc_crtc->shutdown) {
 		mutex_unlock(&tilcdc_crtc->enable_lock);
@@ -504,6 +514,12 @@ static void tilcdc_crtc_enable(struct drm_crtc *crtc)
 	mutex_unlock(&tilcdc_crtc->enable_lock);
 }
 
+static void tilcdc_crtc_atomic_enable(struct drm_crtc *crtc,
+				      struct drm_crtc_state *old_state)
+{
+	tilcdc_crtc_enable(crtc);
+}
+
 static void tilcdc_crtc_off(struct drm_crtc *crtc, bool shutdown)
 {
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
@@ -558,10 +574,15 @@ static void tilcdc_crtc_off(struct drm_crtc *crtc, bool shutdown)
 
 static void tilcdc_crtc_disable(struct drm_crtc *crtc)
 {
-	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
 	tilcdc_crtc_off(crtc, false);
 }
 
+static void tilcdc_crtc_atomic_disable(struct drm_crtc *crtc,
+				       struct drm_crtc_state *old_state)
+{
+	tilcdc_crtc_disable(crtc);
+}
+
 void tilcdc_crtc_shutdown(struct drm_crtc *crtc)
 {
 	tilcdc_crtc_off(crtc, true);
@@ -596,9 +617,7 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct tilcdc_drm_private *priv = crtc->dev->dev_private;
 
-	drm_modeset_lock(&crtc->mutex, NULL);
-	tilcdc_crtc_disable(crtc);
-	drm_modeset_unlock(&crtc->mutex);
+	tilcdc_crtc_shutdown(crtc);
 
 	flush_workqueue(priv->wq);
 
@@ -614,14 +633,12 @@ int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
 
-	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
-
 	if (tilcdc_crtc->event) {
 		dev_err(dev->dev, "already pending page flip!\n");
 		return -EBUSY;
 	}
 
-	drm_framebuffer_reference(fb);
+	drm_framebuffer_get(fb);
 
 	crtc->primary->fb = fb;
 	tilcdc_crtc->event = event;
@@ -636,7 +653,7 @@ int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
 		spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags);
 
 		next_vblank = ktime_add_us(tilcdc_crtc->last_vblank,
-					   1000000 / crtc->hwmode.vrefresh);
+					   tilcdc_crtc->hvtotal_us);
 		tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get()));
 
 		if (tdiff < TILCDC_VBLANK_SAFETY_THRESHOLD_US)
@@ -716,11 +733,39 @@ static void tilcdc_crtc_disable_vblank(struct drm_crtc *crtc)
 {
 }
 
+static void tilcdc_crtc_reset(struct drm_crtc *crtc)
+{
+	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
+	struct drm_device *dev = crtc->dev;
+	int ret;
+
+	drm_atomic_helper_crtc_reset(crtc);
+
+	/* Turn the raster off if it for some reason is on. */
+	pm_runtime_get_sync(dev->dev);
+	if (tilcdc_read(dev, LCDC_RASTER_CTRL_REG) & LCDC_RASTER_ENABLE) {
+		/* Enable DMA Frame Done Interrupt */
+		tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG, LCDC_FRAME_DONE);
+		tilcdc_clear_irqstatus(dev, 0xffffffff);
+
+		tilcdc_crtc->frame_done = false;
+		tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);
+
+		ret = wait_event_timeout(tilcdc_crtc->frame_done_wq,
+					 tilcdc_crtc->frame_done,
+					 msecs_to_jiffies(500));
+		if (ret == 0)
+			dev_err(dev->dev, "%s: timeout waiting for framedone\n",
+				__func__);
+	}
+	pm_runtime_put_sync(dev->dev);
+}
+
 static const struct drm_crtc_funcs tilcdc_crtc_funcs = {
 	.destroy        = tilcdc_crtc_destroy,
 	.set_config     = drm_atomic_helper_set_config,
 	.page_flip      = drm_atomic_helper_page_flip,
-	.reset		= drm_atomic_helper_crtc_reset,
+	.reset		= tilcdc_crtc_reset,
 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 	.enable_vblank	= tilcdc_crtc_enable_vblank,
@@ -729,9 +774,9 @@ static const struct drm_crtc_funcs tilcdc_crtc_funcs = {
 
 static const struct drm_crtc_helper_funcs tilcdc_crtc_helper_funcs = {
 		.mode_fixup     = tilcdc_crtc_mode_fixup,
-		.enable		= tilcdc_crtc_enable,
-		.disable	= tilcdc_crtc_disable,
 		.atomic_check	= tilcdc_crtc_atomic_check,
+		.atomic_enable	= tilcdc_crtc_atomic_enable,
+		.atomic_disable	= tilcdc_crtc_atomic_disable,
 };
 
 int tilcdc_crtc_max_width(struct drm_crtc *crtc)
@@ -1038,8 +1083,8 @@ int tilcdc_crtc_create(struct drm_device *dev)
 	if (priv->is_componentized) {
 		crtc->port = of_graph_get_port_by_id(dev->dev->of_node, 0);
 		if (!crtc->port) { /* This should never happen */
-			dev_err(dev->dev, "Port node not found in %s\n",
-				dev->dev->of_node->full_name);
+			dev_err(dev->dev, "Port node not found in %pOF\n",
+				dev->dev->of_node);
 			ret = -EINVAL;
 			goto fail;
 		}