From 49d6fa210e9a87bd83697692753604cbcaf103ae Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Mon, 11 May 2015 10:45:15 +0200 Subject: [PATCH] drm/i915: Always keep crtc_state->active in sync with enable With the recent modeset internal rework, we wind up setting crtc_state->enable to false, but leave crtc_state->active as true following a drmModeSetCrtc(fb=0), which is incorrect. This mismatch gets caught by drm_atomic_crtc_check() and causes subsequent atomic operations (such as plane updates while the CRTC is disabled) to fail. Bisect points to commit dad9a7d6d96630182fb52aae7c3856e9e7285e13 Author: Ander Conselvan de Oliveira Date: Tue Apr 21 17:13:19 2015 +0300 drm/i915: Use atomic helpers for computing changed flags as the commit that actually triggers the regression. The difference compared to (which this patch reverts) commit 90d469067d0808ddbd9be2c97a4a8e14037b5e46 Author: Matt Roper Date: Thu May 7 14:31:28 2015 -0700 drm/i915: Set crtc_state->active to false when CRTC is disabled (v2) is that we know keep state->active/enable in sync for all legacy modeset paths, as it should be. Cc: Matt Roper Cc: Ander Conselvan de Oliveira Reported-and-Tested-by: Kenneth Graunke Signed-off-by: Maarten Lankhorst [danvet: Directly squash in the revert and augment the commit message.] Signed-off-by: Daniel Vetter Revert "drm/i915: Set crtc_state->active to false when CRTC is disabled (v2)" This reverts commit 90d469067d0808ddbd9be2c97a4a8e14037b5e46. --- drivers/gpu/drm/i915/intel_display.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 240092afc392..4a043a558871 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9868,7 +9868,7 @@ retry: goto fail; } - crtc_state->base.enable = true; + crtc_state->base.active = crtc_state->base.enable = true; if (!mode) mode = &load_detect_mode; @@ -9965,7 +9965,7 @@ void intel_release_load_detect_pipe(struct drm_connector *connector, connector_state->best_encoder = NULL; connector_state->crtc = NULL; - crtc_state->base.enable = false; + crtc_state->base.enable = crtc_state->base.active = false; ret = intel_modeset_setup_plane_state(state, crtc, NULL, NULL, 0, 0); @@ -12342,7 +12342,6 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc, continue; if (!crtc_state->enable) { - crtc_state->active = false; intel_crtc_disable(crtc); } else if (crtc->state->enable) { intel_crtc_disable_planes(crtc); @@ -12492,7 +12491,8 @@ void intel_crtc_restore_mode(struct drm_crtc *crtc) continue; } - crtc_state->base.enable = intel_crtc->new_enabled; + crtc_state->base.active = crtc_state->base.enable = + intel_crtc->new_enabled; if (&intel_crtc->base == crtc) drm_mode_copy(&crtc_state->base.mode, &crtc->mode); @@ -12617,11 +12617,16 @@ intel_modeset_stage_output_state(struct drm_device *dev, } for_each_crtc_in_state(state, crtc, crtc_state, i) { + bool has_connectors; + ret = drm_atomic_add_affected_connectors(state, crtc); if (ret) return ret; - crtc_state->enable = drm_atomic_connectors_for_crtc(state, crtc); + has_connectors = !!drm_atomic_connectors_for_crtc(state, crtc); + if (has_connectors != crtc_state->enable) + crtc_state->enable = + crtc_state->active = has_connectors; } ret = intel_modeset_setup_plane_state(state, set->crtc, set->mode, @@ -14595,6 +14600,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc) WARN_ON(crtc->active); crtc->base.state->enable = false; + crtc->base.state->active = false; crtc->base.enabled = false; } @@ -14623,6 +14629,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc) crtc->active ? "enabled" : "disabled"); crtc->base.state->enable = crtc->active; + crtc->base.state->active = crtc->active; crtc->base.enabled = crtc->active; /* Because we only establish the connector -> encoder -> @@ -14761,6 +14768,7 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev) crtc->config); crtc->base.state->enable = crtc->active; + crtc->base.state->active = crtc->active; crtc->base.enabled = crtc->active; plane_state = to_intel_plane_state(primary->state); -- 2.11.0