This is the last bit required for making nonblocking modesets work
correctly. The state in intel_crtc->hw_ddb is not updated until
somewhere in atomic commit, while the previous crtc state should be
accurate if the ddb hasn't changed.
Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 2 +-
drivers/gpu/drm/i915/intel_pm.c | 6 +++++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index abfcaa07bbe3..69f9addb29b3 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14313,7 +14313,7 @@ static void skl_update_crtcs(struct drm_atomic_state
*state,
* new ddb allocation to take effect.
*/
if (!skl_ddb_entry_equal(&cstate->wm.skl.ddb,
- &intel_crtc->hw_ddb) &&
+
&to_intel_crtc_state(old_crtc_state)->wm.skl.ddb) &&
!crtc->state->active_changed &&
intel_state->wm_results.dirty_pipes != updated)
vbl_wait = true;
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 93e261300ef0..bde6c68eb0db 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3118,7 +3118,11 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device
*dev,
* we currently hold.
*/
if (!intel_state->active_pipe_changes) {
- *alloc = to_intel_crtc(for_crtc)->hw_ddb;
+ /*
+ * alloc may be cleared by clear_intel_crtc_state,
+ * copy from old state to be sure
+ */
+ *alloc = to_intel_crtc_state(for_crtc->state)->wm.skl.ddb;
return;
}
--
2.7.4
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