drm/i915: Implement GPU semaphores for inter-ring synchronisation on SNB
The bulk of the change is to convert the growing list of rings into an
array so that the relationship between the rings and the semaphore sync
registers can be easily computed.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 9b0d9a8..f295a7a 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -273,14 +273,8 @@
struct opregion_asle *asle = dev_priv->opregion.asle;
if (asle) {
- if (IS_MOBILE(dev)) {
- unsigned long irqflags;
-
- spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
+ if (IS_MOBILE(dev))
intel_enable_asle(dev);
- spin_unlock_irqrestore(&dev_priv->user_irq_lock,
- irqflags);
- }
asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
ASLE_PFMB_EN;