diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_global_state.c')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_global_state.c | 137 |
1 files changed, 126 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_global_state.c b/drivers/gpu/drm/i915/display/intel_global_state.c index e8e8be54143b..cbcd1e91b7be 100644 --- a/drivers/gpu/drm/i915/display/intel_global_state.c +++ b/drivers/gpu/drm/i915/display/intel_global_state.c @@ -10,12 +10,55 @@ #include "intel_display_types.h" #include "intel_global_state.h" +struct intel_global_commit { + struct kref ref; + struct completion done; +}; + +static struct intel_global_commit *commit_new(void) +{ + struct intel_global_commit *commit; + + commit = kzalloc(sizeof(*commit), GFP_KERNEL); + if (!commit) + return NULL; + + init_completion(&commit->done); + kref_init(&commit->ref); + + return commit; +} + +static void __commit_free(struct kref *kref) +{ + struct intel_global_commit *commit = + container_of(kref, typeof(*commit), ref); + + kfree(commit); +} + +static struct intel_global_commit *commit_get(struct intel_global_commit *commit) +{ + if (commit) + kref_get(&commit->ref); + + return commit; +} + +static void commit_put(struct intel_global_commit *commit) +{ + if (commit) + kref_put(&commit->ref, __commit_free); +} + static void __intel_atomic_global_state_free(struct kref *kref) { struct intel_global_state *obj_state = container_of(kref, struct intel_global_state, ref); struct intel_global_obj *obj = obj_state->obj; + commit_put(obj_state->commit); + obj->funcs->atomic_destroy_state(obj, obj_state); } @@ -127,6 +170,8 @@ intel_atomic_get_global_obj_state(struct intel_atomic_state *state, obj_state->obj = obj; obj_state->changed = false; + obj_state->serialized = false; + obj_state->commit = NULL; kref_init(&obj_state->ref); @@ -239,19 +284,13 @@ int intel_atomic_lock_global_state(struct intel_global_state *obj_state) int intel_atomic_serialize_global_state(struct intel_global_state *obj_state) { - struct intel_atomic_state *state = obj_state->state; - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - struct intel_crtc *crtc; + int ret; - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state; + ret = intel_atomic_lock_global_state(obj_state); + if (ret) + return ret; - crtc_state = intel_atomic_get_crtc_state(&state->base, crtc); - if (IS_ERR(crtc_state)) - return PTR_ERR(crtc_state); - } - - obj_state->changed = true; + obj_state->serialized = true; return 0; } @@ -267,3 +306,79 @@ intel_atomic_global_state_is_serialized(struct intel_atomic_state *state) return false; return true; } + +int +intel_atomic_global_state_setup_commit(struct intel_atomic_state *state) +{ + const struct intel_global_state *old_obj_state; + struct intel_global_state *new_obj_state; + struct intel_global_obj *obj; + int i; + + for_each_oldnew_global_obj_in_state(state, obj, old_obj_state, + new_obj_state, i) { + struct intel_global_commit *commit = NULL; + + if (new_obj_state->serialized) { + /* + * New commit which is going to be completed + * after the hardware reprogramming is done. + */ + commit = commit_new(); + if (!commit) + return -ENOMEM; + } else if (new_obj_state->changed) { + /* + * We're going to swap to this state, so carry the + * previous commit along, in case it's not yet done. + */ + commit = commit_get(old_obj_state->commit); + } + + new_obj_state->commit = commit; + } + + return 0; +} + +int +intel_atomic_global_state_wait_for_dependencies(struct intel_atomic_state *state) +{ + struct drm_i915_private *i915 = to_i915(state->base.dev); + const struct intel_global_state *old_obj_state; + struct intel_global_obj *obj; + int i; + + for_each_old_global_obj_in_state(state, obj, old_obj_state, i) { + struct intel_global_commit *commit = old_obj_state->commit; + long ret; + + if (!commit) + continue; + + ret = wait_for_completion_timeout(&commit->done, 10 * HZ); + if (ret == 0) { + drm_err(&i915->drm, "global state timed out\n"); + return -ETIMEDOUT; + } + } + + return 0; +} + +void +intel_atomic_global_state_commit_done(struct intel_atomic_state *state) +{ + const struct intel_global_state *new_obj_state; + struct intel_global_obj *obj; + int i; + + for_each_new_global_obj_in_state(state, obj, new_obj_state, i) { + struct intel_global_commit *commit = new_obj_state->commit; + + if (!new_obj_state->serialized) + continue; + + complete_all(&commit->done); + } +} |