drm: move drm vblank initialization/cleanup to driver load/unload

drm vblank initialization keeps track of the changes in driver-supplied
frame counts across vt switch and mode setting, but only if you let it by
not tearing down the drm vblank structure.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

14 files changed, 44 insertions, 21 deletions

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 3ab1e9cc4692..996097acb5e7 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -305,6 +305,8 @@ static void drm_cleanup(struct drm_device * dev)
                 return;
         }
 
+        drm_vblank_cleanup(dev);
+
         drm_lastclose(dev);
 
         if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 15c8dabc3e97..1e787f894b3c 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -94,7 +94,7 @@ static void vblank_disable_fn(unsigned long arg)
         }
 }
 
-static void drm_vblank_cleanup(struct drm_device *dev)
+void drm_vblank_cleanup(struct drm_device *dev)
 {
         /* Bail if the driver didn't call drm_vblank_init() */
         if (dev->num_crtcs == 0)
@@ -278,8 +278,6 @@ int drm_irq_uninstall(struct drm_device * dev)
 
         free_irq(dev->pdev->irq, dev);
 
-        drm_vblank_cleanup(dev);
-
         return 0;
 }
 EXPORT_SYMBOL(drm_irq_uninstall);
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 0d215e38606a..ba89b42f790a 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -856,6 +856,13 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
         spin_lock_init(&dev_priv->user_irq_lock);
 
+        ret = drm_vblank_init(dev, I915_NUM_PIPE);
+
+        if (ret) {
+                (void) i915_driver_unload(dev);
+                return ret;
+        }
+
         return ret;
 }
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ed1edcf8704f..b24d522f490c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -47,6 +47,8 @@ enum pipe {
         PIPE_B,
 };
 
+#define I915_NUM_PIPE   2
+
 /* Interface history:
  *
  * 1.1: Original.
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c3673581db58..fe3d9cc72bf5 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -498,11 +498,6 @@ void i915_driver_irq_preinstall(struct drm_device * dev)
 int i915_driver_irq_postinstall(struct drm_device *dev)
 {
         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-        int ret, num_pipes = 2;
-
-        ret = drm_vblank_init(dev, num_pipes);
-        if (ret)
-                return ret;
 
         dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B;
 
diff --git a/drivers/gpu/drm/mga/mga_dma.c b/drivers/gpu/drm/mga/mga_dma.c
index c1d12dbfa8d8..b49c5ff29585 100644
--- a/drivers/gpu/drm/mga/mga_dma.c
+++ b/drivers/gpu/drm/mga/mga_dma.c
@@ -396,6 +396,7 @@ int mga_freelist_put(struct drm_device * dev, struct drm_buf * buf)
 int mga_driver_load(struct drm_device * dev, unsigned long flags)
 {
         drm_mga_private_t *dev_priv;
+        int ret;
 
         dev_priv = drm_alloc(sizeof(drm_mga_private_t), DRM_MEM_DRIVER);
         if (!dev_priv)
@@ -415,6 +416,13 @@ int mga_driver_load(struct drm_device * dev, unsigned long flags)
         dev->types[7] = _DRM_STAT_PRIMARY;
         dev->types[8] = _DRM_STAT_SECONDARY;
 
+        ret = drm_vblank_init(dev, 1);
+
+        if (ret) {
+                (void) mga_driver_unload(dev);
+                return ret;
+        }
+
         return 0;
 }
 
diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
index bab42f41188b..daa6041a483a 100644
--- a/drivers/gpu/drm/mga/mga_irq.c
+++ b/drivers/gpu/drm/mga/mga_irq.c
@@ -152,11 +152,6 @@ void mga_driver_irq_preinstall(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;
-        int ret;
-
-        ret = drm_vblank_init(dev, 1);
-        if (ret)
-                return ret;
 
         DRM_INIT_WAITQUEUE(&dev_priv->fence_queue);
 
diff --git a/drivers/gpu/drm/r128/r128_drv.c b/drivers/gpu/drm/r128/r128_drv.c
index 3265d53ba91f..601f4c0e5da5 100644
--- a/drivers/gpu/drm/r128/r128_drv.c
+++ b/drivers/gpu/drm/r128/r128_drv.c
@@ -45,6 +45,7 @@ static struct drm_driver driver = {
             DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
             DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
         .dev_priv_size = sizeof(drm_r128_buf_priv_t),
+        .load = r128_driver_load,
         .preclose = r128_driver_preclose,
         .lastclose = r128_driver_lastclose,
         .get_vblank_counter = r128_get_vblank_counter,
@@ -84,6 +85,11 @@ static struct drm_driver driver = {
         .patchlevel = DRIVER_PATCHLEVEL,
 };
 
+int r128_driver_load(struct drm_device * dev, unsigned long flags)
+{
+        return drm_vblank_init(dev, 1);
+}
+
 static int __init r128_init(void)
 {
         driver.num_ioctls = r128_max_ioctl;
diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h
index 5898b274279d..797a26c42dab 100644
--- a/drivers/gpu/drm/r128/r128_drv.h
+++ b/drivers/gpu/drm/r128/r128_drv.h
@@ -159,6 +159,7 @@ extern void r128_driver_irq_preinstall(struct drm_device * dev);
 extern int r128_driver_irq_postinstall(struct drm_device *dev);
 extern void r128_driver_irq_uninstall(struct drm_device * dev);
 extern void r128_driver_lastclose(struct drm_device * dev);
+extern int r128_driver_load(struct drm_device * dev, unsigned long flags);
 extern void r128_driver_preclose(struct drm_device * dev,
                                  struct drm_file *file_priv);
 
diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c
index d7349012a680..69810fb8ac49 100644
--- a/drivers/gpu/drm/r128/r128_irq.c
+++ b/drivers/gpu/drm/r128/r128_irq.c
@@ -102,7 +102,7 @@ void r128_driver_irq_preinstall(struct drm_device * dev)
 
 int r128_driver_irq_postinstall(struct drm_device *dev)
 {
-        return drm_vblank_init(dev, 1);
+        return 0;
 }
 
 void r128_driver_irq_uninstall(struct drm_device * dev)
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index abdc1ae38467..dcebb4bee7aa 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -1757,6 +1757,12 @@ int radeon_driver_load(struct drm_device *dev, unsigned long flags)
         if (ret != 0)
                 return ret;
 
+        ret = drm_vblank_init(dev, 2);
+        if (ret) {
+                radeon_driver_unload(dev);
+                return ret;
+        }
+
         DRM_DEBUG("%s card detected\n",
                   ((dev_priv->flags & RADEON_IS_AGP) ? "AGP" : (((dev_priv->flags & RADEON_IS_PCIE) ? "PCIE" : "PCI"))));
         return ret;
diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c
index 5079f7054a2f..97c0599fdb1e 100644
--- a/drivers/gpu/drm/radeon/radeon_irq.c
+++ b/drivers/gpu/drm/radeon/radeon_irq.c
@@ -337,15 +337,10 @@ int radeon_driver_irq_postinstall(struct drm_device *dev)
 {
         drm_radeon_private_t *dev_priv =
             (drm_radeon_private_t *) dev->dev_private;
-        int ret;
 
         atomic_set(&dev_priv->swi_emitted, 0);
         DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
 
-        ret = drm_vblank_init(dev, 2);
-        if (ret)
-                return ret;
-
         dev->max_vblank_count = 0x001fffff;
 
         radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
index 665d319b927b..c248c1d37268 100644
--- a/drivers/gpu/drm/via/via_irq.c
+++ b/drivers/gpu/drm/via/via_irq.c
@@ -314,7 +314,6 @@ int via_driver_irq_postinstall(struct drm_device *dev)
         if (!dev_priv)
                 return -EINVAL;
 
-        drm_vblank_init(dev, 1);
         status = VIA_READ(VIA_REG_INTERRUPT);
         VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
                   | dev_priv->irq_enable_mask);
diff --git a/drivers/gpu/drm/via/via_map.c b/drivers/gpu/drm/via/via_map.c
index a967556be014..2c4f0b485792 100644
--- a/drivers/gpu/drm/via/via_map.c
+++ b/drivers/gpu/drm/via/via_map.c
@@ -107,8 +107,17 @@ int via_driver_load(struct drm_device *dev, unsigned long chipset)
         ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
         if (ret) {
                 drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
+                return ret;
         }
-        return ret;
+
+        ret = drm_vblank_init(dev, 1);
+        if (ret) {
+                drm_sman_takedown(&dev_priv->sman);
+                drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
+                return ret;
+        }
+
+        return 0;
 }
 
 int via_driver_unload(struct drm_device *dev)