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staging: drm/omap: add a workqueue

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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@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Clark 2012-03-05 10:48:32 -06:00 committed by Greg Kroah-Hartman
parent a890e6623a
commit 5609f7fe30
2 changed files with 10 additions and 0 deletions
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8
drivers/staging/omapdrm/omap_drv.c
View file

@ -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;

2
drivers/staging/omapdrm/omap_drv.h
View file

@ -51,6 +51,8 @@ struct omap_drm_private {
struct drm_fb_helper *fbdev;
struct workqueue_struct *wq;
bool has_dmm;
};