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drm/atomic-helper: debug output for modesets

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With the combination of ->enable and ->active it's a bit complicated
to follow what exactly is going on sometimes within a full modeset.
Add debug output to make this all traceable.

Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter 2015-01-22 16:36:25 +01:00
parent ee0a89cf3c
commit 95d6eb3b13
1 changed files with 21 additions and 1 deletions
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22
drivers/gpu/drm/drm_atomic_helper.c
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@ -591,6 +591,9 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
funcs = encoder->helper_private;
DRM_DEBUG_KMS("disabling [ENCODER:%d:%s]\n",
encoder->base.id, encoder->name);
/*
* Each encoder has at most one connector (since we always steal
* it away), so we won't call call disable hooks twice.
@ -627,6 +630,10 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
funcs = crtc->helper_private;
DRM_DEBUG_KMS("disabling [CRTC:%d]\n",
crtc->base.id);
/* Right function depends upon target state. */
if (crtc->state->enable && funcs->prepare)
funcs->prepare(crtc);
@ -707,8 +714,12 @@ crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state)
funcs = crtc->helper_private;
if (crtc->state->enable)
if (crtc->state->enable) {
DRM_DEBUG_KMS("modeset on [CRTC:%d]\n",
crtc->base.id);
funcs->mode_set_nofb(crtc);
}
}
for (i = 0; i < old_state->num_connector; i++) {
@ -732,6 +743,9 @@ crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state)
if (!new_crtc_state->mode_changed)
continue;
DRM_DEBUG_KMS("modeset on [ENCODER:%d:%s]\n",
encoder->base.id, encoder->name);
/*
* Each encoder has at most one connector (since we always steal
* it away), so we won't call call mode_set hooks twice.
@ -793,6 +807,9 @@ void drm_atomic_helper_commit_post_planes(struct drm_device *dev,
funcs = crtc->helper_private;
if (crtc->state->enable) {
DRM_DEBUG_KMS("enabling [CRTC:%d]\n",
crtc->base.id);
if (funcs->enable)
funcs->enable(crtc);
else
@ -816,6 +833,9 @@ void drm_atomic_helper_commit_post_planes(struct drm_device *dev,
encoder = connector->state->best_encoder;
funcs = encoder->helper_private;
DRM_DEBUG_KMS("enabling [ENCODER:%d:%s]\n",
encoder->base.id, encoder->name);
/*
* Each encoder has at most one connector (since we always steal
* it away), so we won't call call enable hooks twice.