1 files changed, 59 insertions, 34 deletions

diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
index 9302cb8f0f8..1b071b8ff9d 100644
--- a/drivers/gpu/drm/mga/mga_irq.c
+++ b/drivers/gpu/drm/mga/mga_irq.c
@@ -1,5 +1,6 @@
 /* mga_irq.c -- IRQ handling for radeon -*- linux-c -*-
- *
+ */
+/*
  * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
  *
  * The Weather Channel (TM) funded Tungsten Graphics to develop the
@@ -30,12 +31,23 @@
  *    Eric Anholt <anholt@FreeBSD.org>
  */
 
-#include "drmP.h"
-#include "drm.h"
-#include "mga_drm.h"
+#include <drm/drmP.h>
+#include <drm/mga_drm.h>
 #include "mga_drv.h"
 
-irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
+u32 mga_get_vblank_counter(struct drm_device *dev, int crtc)
+{
+	const drm_mga_private_t *const dev_priv =
+		(drm_mga_private_t *) dev->dev_private;
+
+	if (crtc != 0)
+		return 0;
+
+	return atomic_read(&dev_priv->vbl_received);
+}
+
+
+irqreturn_t mga_driver_irq_handler(int irq, void *arg)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
@@ -47,9 +59,8 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
 	/* VBLANK interrupt */
 	if (status & MGA_VLINEPEN) {
 		MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR);
-		atomic_inc(&dev->vbl_received);
-		DRM_WAKEUP(&dev->vbl_queue);
-		drm_vbl_send_signals(dev);
+		atomic_inc(&dev_priv->vbl_received);
+		drm_handle_vblank(dev, 0);
 		handled = 1;
 	}
 
@@ -58,45 +69,56 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
 		const u32 prim_start = MGA_READ(MGA_PRIMADDRESS);
 		const u32 prim_end = MGA_READ(MGA_PRIMEND);
 
+
 		MGA_WRITE(MGA_ICLEAR, MGA_SOFTRAPICLR);
 
 		/* In addition to clearing the interrupt-pending bit, we
 		 * have to write to MGA_PRIMEND to re-start the DMA operation.
 		 */
-		if ((prim_start & ~0x03) != (prim_end & ~0x03)) {
+		if ((prim_start & ~0x03) != (prim_end & ~0x03))
 			MGA_WRITE(MGA_PRIMEND, prim_end);
-		}
 
 		atomic_inc(&dev_priv->last_fence_retired);
-		DRM_WAKEUP(&dev_priv->fence_queue);
+		wake_up(&dev_priv->fence_queue);
 		handled = 1;
 	}
 
-	if (handled) {
+	if (handled)
 		return IRQ_HANDLED;
-	}
 	return IRQ_NONE;
 }
 
-int mga_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
+int mga_enable_vblank(struct drm_device *dev, int crtc)
 {
-	unsigned int cur_vblank;
-	int ret = 0;
+	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 
-	/* Assume that the user has missed the current sequence number
-	 * by about a day rather than she wants to wait for years
-	 * using vertical blanks...
-	 */
-	DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
-		    (((cur_vblank = atomic_read(&dev->vbl_received))
-		      - *sequence) <= (1 << 23)));
+	if (crtc != 0) {
+		DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+			  crtc);
+		return 0;
+	}
 
-	*sequence = cur_vblank;
+	MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN);
+	return 0;
+}
 
-	return ret;
+
+void mga_disable_vblank(struct drm_device *dev, int crtc)
+{
+	if (crtc != 0) {
+		DRM_ERROR("tried to disable vblank on non-existent crtc %d\n",
+			  crtc);
+	}
+
+	/* Do *NOT* disable the vertical refresh interrupt.  MGA doesn't have
+	 * a nice hardware counter that tracks the number of refreshes when
+	 * the interrupt is disabled, and the kernel doesn't know the refresh
+	 * rate to calculate an estimate.
+	 */
+	/* MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN); */
 }
 
-int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence)
+int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence)
 {
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 	unsigned int cur_fence;
@@ -106,7 +128,7 @@ int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence)
 	 * by about a day rather than she wants to wait for years
 	 * using fences.
 	 */
-	DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * DRM_HZ,
+	DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * HZ,
 		    (((cur_fence = atomic_read(&dev_priv->last_fence_retired))
 		      - *sequence) <= (1 << 23)));
 
@@ -115,7 +137,7 @@ int mga_driver_fence_wait(struct drm_device * dev, unsigned int *sequence)
 	return ret;
 }
 
-void mga_driver_irq_preinstall(struct drm_device * dev)
+void mga_driver_irq_preinstall(struct drm_device *dev)
 {
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 
@@ -125,17 +147,20 @@ void mga_driver_irq_preinstall(struct drm_device * dev)
 	MGA_WRITE(MGA_ICLEAR, ~0);
 }
 
-void mga_driver_irq_postinstall(struct drm_device * dev)
+int mga_driver_irq_postinstall(struct drm_device *dev)
 {
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 
-	DRM_INIT_WAITQUEUE(&dev_priv->fence_queue);
+	init_waitqueue_head(&dev_priv->fence_queue);
 
-	/* Turn on vertical blank interrupt and soft trap interrupt. */
-	MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN);
+	/* Turn on soft trap interrupt.  Vertical blank interrupts are enabled
+	 * in mga_enable_vblank.
+	 */
+	MGA_WRITE(MGA_IEN, MGA_SOFTRAPEN);
+	return 0;
 }
 
-void mga_driver_irq_uninstall(struct drm_device * dev)
+void mga_driver_irq_uninstall(struct drm_device *dev)
 {
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 	if (!dev_priv)
@@ -144,5 +169,5 @@ void mga_driver_irq_uninstall(struct drm_device * dev)
 	/* Disable *all* interrupts */
 	MGA_WRITE(MGA_IEN, 0);
 
-	dev->irq_enabled = 0;
+	dev->irq_enabled = false;
 }