redonkable/alistair23-linux
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drm: omapdrm: Handle OCP error IRQ directly

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Instead of going through a complicated registration mechanism, just
call the OCP error IRQ handler directly from the main IRQ handler.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Laurent Pinchart 2015-05-28 01:05:20 +03:00
parent e0519af75d
commit 6b5538d4ec
2 changed files with 10 additions and 19 deletions
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1
drivers/gpu/drm/omapdrm/omap_drv.h
View file

@ -103,7 +103,6 @@ struct omap_drm_private {
/* irq handling: */
struct list_head irq_list; /* list of omap_drm_irq */
uint32_t irq_mask; /* enabled irqs in addition to irq_list */
struct omap_drm_irq error_handler;
/* atomic commit */
struct {

28
drivers/gpu/drm/omapdrm/omap_irq.c
View file

@ -21,12 +21,6 @@
static DEFINE_SPINLOCK(list_lock);
static void omap_irq_error_handler(struct omap_drm_irq *irq,
uint32_t irqstatus)
{
DRM_ERROR("errors: %08x\n", irqstatus);
}
/* call with list_lock and dispc runtime held */
static void omap_irq_update(struct drm_device *dev)
{
@ -224,6 +218,14 @@ static void omap_irq_fifo_underflow(struct omap_drm_private *priv,
pr_cont("(0x%08x)\n", irqstatus);
}
static void omap_irq_ocp_error_handler(u32 irqstatus)
{
if (!(irqstatus & DISPC_IRQ_OCP_ERR))
return;
DRM_ERROR("OCP error\n");
}
static irqreturn_t omap_irq_handler(int irq, void *arg)
{
struct drm_device *dev = (struct drm_device *) arg;
@ -250,6 +252,7 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
omap_crtc_error_irq(crtc, irqstatus);
}
omap_irq_ocp_error_handler(irqstatus);
omap_irq_fifo_underflow(priv, irqstatus);
spin_lock_irqsave(&list_lock, flags);
@ -282,7 +285,6 @@ static const u32 omap_underflow_irqs[] = {
int omap_drm_irq_install(struct drm_device *dev)
{
struct omap_drm_private *priv = dev->dev_private;
struct omap_drm_irq *error_handler = &priv->error_handler;
unsigned int num_mgrs = dss_feat_get_num_mgrs();
unsigned int max_planes;
unsigned int i;
@ -290,7 +292,7 @@ int omap_drm_irq_install(struct drm_device *dev)
INIT_LIST_HEAD(&priv->irq_list);
priv->irq_mask = 0;
priv->irq_mask = DISPC_IRQ_OCP_ERR;
max_planes = min(ARRAY_SIZE(priv->planes),
ARRAY_SIZE(omap_underflow_irqs));
@ -310,16 +312,6 @@ int omap_drm_irq_install(struct drm_device *dev)
if (ret < 0)
return ret;
error_handler->irq = omap_irq_error_handler;
error_handler->irqmask = DISPC_IRQ_OCP_ERR;
/* for now ignore DISPC_IRQ_SYNC_LOST_DIGIT.. really I think
* we just need to ignore it while enabling tv-out
*/
error_handler->irqmask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
omap_irq_register(dev, error_handler);
dev->irq_enabled = true;
return 0;