drm/i915: More intel_engine_cs renaming

Some trivial ones, first pass done with Coccinelle:

@@
@@
(
- I915_NUM_RINGS
+ I915_NUM_ENGINES
|
- intel_ring_flag
+ intel_engine_flag
|
- for_each_ring
+ for_each_engine
|
- i915_gem_request_get_ring
+ i915_gem_request_get_engine
|
- intel_ring_idle
+ intel_engine_idle
|
- i915_gem_reset_ring_status
+ i915_gem_reset_engine_status
|
- i915_gem_reset_ring_cleanup
+ i915_gem_reset_engine_cleanup
|
- init_ring_lists
+ init_engine_lists
)

But that didn't fully work so I cleaned it up with:

for f in *.[hc]; do sed -i -e s/I915_NUM_RINGS/I915_NUM_ENGINES/ $f; done
for f in *.[hc]; do sed -i -e s/i915_gem_request_get_ring/i915_gem_request_get_engine/ $f; done
for f in *.[hc]; do sed -i -e s/intel_ring_flag/intel_engine_flag/ $f; done
for f in *.[hc]; do sed -i -e s/intel_ring_idle/intel_engine_idle/ $f; done
for f in *.[hc]; do sed -i -e s/init_ring_lists/init_engine_lists/ $f; done
for f in *.[hc]; do sed -i -e s/i915_gem_reset_ring_cleanup/i915_gem_reset_engine_cleanup/ $f; done
for f in *.[hc]; do sed -i -e s/i915_gem_reset_ring_status/i915_gem_reset_engine_status/ $f; done

v2: Rebase.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 7075b93..f7493c5 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -62,7 +62,7 @@
 bool intel_ring_stopped(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->dev->dev_private;
-	return dev_priv->gpu_error.stop_rings & intel_ring_flag(engine);
+	return dev_priv->gpu_error.stop_rings & intel_engine_flag(engine);
 }
 
 static void __intel_ring_advance(struct intel_engine_cs *engine)
@@ -1283,7 +1283,7 @@
 	if (ret)
 		return ret;
 
-	for_each_ring(waiter, dev_priv, i) {
+	for_each_engine(waiter, dev_priv, i) {
 		u32 seqno;
 		u64 gtt_offset = signaller->semaphore.signal_ggtt[i];
 		if (gtt_offset == MI_SEMAPHORE_SYNC_INVALID)
@@ -1324,7 +1324,7 @@
 	if (ret)
 		return ret;
 
-	for_each_ring(waiter, dev_priv, i) {
+	for_each_engine(waiter, dev_priv, i) {
 		u32 seqno;
 		u64 gtt_offset = signaller->semaphore.signal_ggtt[i];
 		if (gtt_offset == MI_SEMAPHORE_SYNC_INVALID)
@@ -1363,7 +1363,7 @@
 	if (ret)
 		return ret;
 
-	for_each_ring(useless, dev_priv, i) {
+	for_each_engine(useless, dev_priv, i) {
 		i915_reg_t mbox_reg = signaller->semaphore.mbox.signal[i];
 
 		if (i915_mmio_reg_valid(mbox_reg)) {
@@ -2356,7 +2356,7 @@
 	intel_ring_update_space(ringbuf);
 }
 
-int intel_ring_idle(struct intel_engine_cs *engine)
+int intel_engine_idle(struct intel_engine_cs *engine)
 {
 	struct drm_i915_gem_request *req;
 
@@ -3170,7 +3170,7 @@
 	if (!intel_ring_initialized(engine))
 		return;
 
-	ret = intel_ring_idle(engine);
+	ret = intel_engine_idle(engine);
 	if (ret && !i915_reset_in_progress(&to_i915(engine->dev)->gpu_error))
 		DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n",
 			  engine->name, ret);