Now that the IRQ list is used for IRQ wait only we can merge omap_drm_irq and omap_irq_wait and simplify the implementation.
Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/omapdrm/omap_drv.h | 17 +------ drivers/gpu/drm/omapdrm/omap_irq.c | 94 ++++++++++++++------------------------ 2 files changed, 37 insertions(+), 74 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h index 447cf0e013d8..c250ffe270cc 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.h +++ b/drivers/gpu/drm/omapdrm/omap_drv.h @@ -49,19 +49,6 @@ struct omap_drm_window { uint32_t src_w, src_h; };
-/* For transiently registering for different DSS irqs that various parts - * of the KMS code need during setup/configuration. We these are not - * necessarily the same as what drm_vblank_get/put() are requesting, and - * the hysteresis in drm_vblank_put() is not necessarily desirable for - * internal housekeeping related irq usage. - */ -struct omap_drm_irq { - struct list_head node; - uint32_t irqmask; - bool registered; - void (*irq)(struct omap_drm_irq *irq); -}; - /* For KMS code that needs to wait for a certain # of IRQs: */ struct omap_irq_wait; @@ -102,8 +89,8 @@ struct omap_drm_private { struct drm_property *zorder_prop;
/* irq handling: */ - struct list_head irq_list; /* list of omap_drm_irq */ - uint32_t irq_mask; /* enabled irqs in addition to irq_list */ + struct list_head wait_list; /* list of omap_irq_wait */ + uint32_t irq_mask; /* enabled irqs in addition to wait_list */
/* atomic commit */ struct { diff --git a/drivers/gpu/drm/omapdrm/omap_irq.c b/drivers/gpu/drm/omapdrm/omap_irq.c index dbcf9af4c7c8..947c58d956c6 100644 --- a/drivers/gpu/drm/omapdrm/omap_irq.c +++ b/drivers/gpu/drm/omapdrm/omap_irq.c @@ -21,17 +21,23 @@
static DEFINE_SPINLOCK(list_lock);
+struct omap_irq_wait { + struct list_head node; + uint32_t irqmask; + int count; +}; + /* call with list_lock and dispc runtime held */ static void omap_irq_update(struct drm_device *dev) { struct omap_drm_private *priv = dev->dev_private; - struct omap_drm_irq *irq; + struct omap_irq_wait *wait; uint32_t irqmask = priv->irq_mask;
assert_spin_locked(&list_lock);
- list_for_each_entry(irq, &priv->irq_list, node) - irqmask |= irq->irqmask; + list_for_each_entry(wait, &priv->wait_list, node) + irqmask |= wait->irqmask;
DBG("irqmask=%08x", irqmask);
@@ -39,61 +45,29 @@ static void omap_irq_update(struct drm_device *dev) dispc_read_irqenable(); /* flush posted write */ }
-static void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq) -{ - struct omap_drm_private *priv = dev->dev_private; - unsigned long flags; - - spin_lock_irqsave(&list_lock, flags); - - if (!WARN_ON(irq->registered)) { - irq->registered = true; - list_add(&irq->node, &priv->irq_list); - omap_irq_update(dev); - } - - spin_unlock_irqrestore(&list_lock, flags); -} - -static void omap_irq_unregister(struct drm_device *dev, - struct omap_drm_irq *irq) -{ - unsigned long flags; - - spin_lock_irqsave(&list_lock, flags); - - if (!WARN_ON(!irq->registered)) { - irq->registered = false; - list_del(&irq->node); - omap_irq_update(dev); - } - - spin_unlock_irqrestore(&list_lock, flags); -} - -struct omap_irq_wait { - struct omap_drm_irq irq; - int count; -}; - static DECLARE_WAIT_QUEUE_HEAD(wait_event);
-static void wait_irq(struct omap_drm_irq *irq) +static void omap_irq_wait_irq(struct omap_irq_wait *wait) { - struct omap_irq_wait *wait = - container_of(irq, struct omap_irq_wait, irq); wait->count--; - wake_up_all(&wait_event); + wake_up(&wait_event); }
struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev, uint32_t irqmask, int count) { + struct omap_drm_private *priv = dev->dev_private; struct omap_irq_wait *wait = kzalloc(sizeof(*wait), GFP_KERNEL); - wait->irq.irq = wait_irq; - wait->irq.irqmask = irqmask; + unsigned long flags; + + wait->irqmask = irqmask; wait->count = count; - omap_irq_register(dev, &wait->irq); + + spin_lock_irqsave(&list_lock, flags); + list_add(&wait->node, &priv->wait_list); + omap_irq_update(dev); + spin_unlock_irqrestore(&list_lock, flags); + return wait; }
@@ -101,11 +75,16 @@ int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait, unsigned long timeout) { int ret = wait_event_timeout(wait_event, (wait->count <= 0), timeout); - omap_irq_unregister(dev, &wait->irq); + unsigned long flags; + + spin_lock_irqsave(&list_lock, flags); + list_del(&wait->node); + omap_irq_update(dev); + spin_unlock_irqrestore(&list_lock, flags); + kfree(wait); - if (ret == 0) - return -1; - return 0; + + return ret == 0 ? -1 : 0; }
static uint32_t pipe2vbl(struct drm_crtc *crtc) @@ -218,7 +197,7 @@ static irqreturn_t omap_irq_handler(int irq, void *arg) { struct drm_device *dev = (struct drm_device *) arg; struct omap_drm_private *priv = dev->dev_private; - struct omap_drm_irq *handler, *n; + struct omap_irq_wait *wait, *n; unsigned long flags; unsigned int id; u32 irqstatus; @@ -246,12 +225,9 @@ static irqreturn_t omap_irq_handler(int irq, void *arg) omap_irq_fifo_underflow(priv, irqstatus);
spin_lock_irqsave(&list_lock, flags); - list_for_each_entry_safe(handler, n, &priv->irq_list, node) { - if (handler->irqmask & irqstatus) { - spin_unlock_irqrestore(&list_lock, flags); - handler->irq(handler); - spin_lock_irqsave(&list_lock, flags); - } + list_for_each_entry_safe(wait, n, &priv->wait_list, node) { + if (wait->irqmask & irqstatus) + omap_irq_wait_irq(wait); } spin_unlock_irqrestore(&list_lock, flags);
@@ -280,7 +256,7 @@ int omap_drm_irq_install(struct drm_device *dev) unsigned int i; int ret;
- INIT_LIST_HEAD(&priv->irq_list); + INIT_LIST_HEAD(&priv->wait_list);
priv->irq_mask = DISPC_IRQ_OCP_ERR;