From: Rob Clark <rob@xxxxxx>
Add a workqueue for omapdrm driver, which is needed for at least a
couple things currently: (1) moving omap_gem_roll() to a non-atomic
context, (2) synchronizing page flips w/ DSS scanout related irq's
(in particular not unmapping previous buffer until DSS finishes
scanout).
Signed-off-by: Rob Clark <rob@xxxxxx>
---
drivers/staging/omapdrm/omap_drv.c | 8 ++++++++
drivers/staging/omapdrm/omap_drv.h | 2 ++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/omapdrm/omap_drv.c b/drivers/staging/omapdrm/omap_drv.c
index 3bbea9a..7417e1f 100644
--- a/drivers/staging/omapdrm/omap_drv.c
+++ b/drivers/staging/omapdrm/omap_drv.c
@@ -570,6 +570,9 @@ static int dev_load(struct drm_device *dev, unsigned long flags)
dev->dev_private = priv;
+ priv->wq = alloc_workqueue("omapdrm",
+ WQ_UNBOUND | WQ_NON_REENTRANT, 1);
+
omap_gem_init(dev);
ret = omap_modeset_init(dev);
@@ -598,6 +601,8 @@ static int dev_load(struct drm_device *dev, unsigned long flags)
static int dev_unload(struct drm_device *dev)
{
+ struct omap_drm_private *priv = dev->dev_private;
+
DBG("unload: dev=%p", dev);
drm_vblank_cleanup(dev);
@@ -607,6 +612,9 @@ static int dev_unload(struct drm_device *dev)
omap_modeset_free(dev);
omap_gem_deinit(dev);
+ flush_workqueue(priv->wq);
+ destroy_workqueue(priv->wq);
+
kfree(dev->dev_private);
dev->dev_private = NULL;
diff --git a/drivers/staging/omapdrm/omap_drv.h b/drivers/staging/omapdrm/omap_drv.h
index d924c95..a84547c 100644
--- a/drivers/staging/omapdrm/omap_drv.h
+++ b/drivers/staging/omapdrm/omap_drv.h
@@ -51,6 +51,8 @@ struct omap_drm_private {
struct drm_fb_helper *fbdev;
+ struct workqueue_struct *wq;
+
bool has_dmm;
};
--
1.7.5.4
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