diff options
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 39 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 2 | ||||
| -rw-r--r-- | include/drm/drm_atomic.h | 3 | ||||
| -rw-r--r-- | include/drm/drm_crtc.h | 8 |
4 files changed, 38 insertions, 14 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 99656815641d..10bcdd554501 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -124,7 +124,7 @@ steal_encoder(struct drm_atomic_state *state, if (IS_ERR(crtc_state)) return PTR_ERR(crtc_state); - crtc_state->mode_changed = true; + crtc_state->connectors_changed = true; list_for_each_entry(connector, &config->connector_list, head) { if (connector->state->best_encoder != encoder) @@ -174,14 +174,14 @@ update_connector_routing(struct drm_atomic_state *state, int conn_idx) idx = drm_crtc_index(connector->state->crtc); crtc_state = state->crtc_states[idx]; - crtc_state->mode_changed = true; + crtc_state->connectors_changed = true; } if (connector_state->crtc) { idx = drm_crtc_index(connector_state->crtc); crtc_state = state->crtc_states[idx]; - crtc_state->mode_changed = true; + crtc_state->connectors_changed = true; } } @@ -233,7 +233,7 @@ update_connector_routing(struct drm_atomic_state *state, int conn_idx) idx = drm_crtc_index(connector_state->crtc); crtc_state = state->crtc_states[idx]; - crtc_state->mode_changed = true; + crtc_state->connectors_changed = true; DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d]\n", connector->base.id, @@ -256,7 +256,8 @@ mode_fixup(struct drm_atomic_state *state) bool ret; for_each_crtc_in_state(state, crtc, crtc_state, i) { - if (!crtc_state->mode_changed) + if (!crtc_state->mode_changed && + !crtc_state->connectors_changed) continue; drm_mode_copy(&crtc_state->adjusted_mode, &crtc_state->mode); @@ -312,7 +313,8 @@ mode_fixup(struct drm_atomic_state *state) for_each_crtc_in_state(state, crtc, crtc_state, i) { const struct drm_crtc_helper_funcs *funcs; - if (!crtc_state->mode_changed) + if (!crtc_state->mode_changed && + !crtc_state->connectors_changed) continue; funcs = crtc->helper_private; @@ -338,9 +340,14 @@ mode_fixup(struct drm_atomic_state *state) * * Check the state object to see if the requested state is physically possible. * This does all the crtc and connector related computations for an atomic - * update. It computes and updates crtc_state->mode_changed, adds any additional - * connectors needed for full modesets and calls down into ->mode_fixup - * functions of the driver backend. + * update and adds any additional connectors needed for full modesets and calls + * down into ->mode_fixup functions of the driver backend. + * + * crtc_state->mode_changed is set when the input mode is changed. + * crtc_state->connectors_changed is set when a connector is added or + * removed from the crtc. + * crtc_state->active_changed is set when crtc_state->active changes, + * which is used for dpms. * * IMPORTANT: * @@ -373,7 +380,17 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, if (crtc->state->enable != crtc_state->enable) { DRM_DEBUG_ATOMIC("[CRTC:%d] enable changed\n", crtc->base.id); + + /* + * For clarity this assignment is done here, but + * enable == 0 is only true when there are no + * connectors and a NULL mode. + * + * The other way around is true as well. enable != 0 + * iff connectors are attached and a mode is set. + */ crtc_state->mode_changed = true; + crtc_state->connectors_changed = true; } } @@ -448,6 +465,9 @@ EXPORT_SYMBOL(drm_atomic_helper_check_modeset); * This does all the plane update related checks using by calling into the * ->atomic_check hooks provided by the driver. * + * It also sets crtc_state->planes_changed to indicate that a crtc has + * updated planes. + * * RETURNS * Zero for success or -errno */ @@ -2074,6 +2094,7 @@ void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, state->mode_changed = false; state->active_changed = false; state->planes_changed = false; + state->connectors_changed = false; state->event = NULL; } EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index af0bcfee4771..07cee59edece 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -413,7 +413,7 @@ static const intel_limit_t intel_limits_bxt = { static bool needs_modeset(struct drm_crtc_state *state) { - return state->mode_changed || state->active_changed; + return drm_atomic_crtc_needs_modeset(state); } /** diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 8a3a913320eb..e67aeac2aee0 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -166,7 +166,8 @@ int __must_check drm_atomic_async_commit(struct drm_atomic_state *state); static inline bool drm_atomic_crtc_needs_modeset(struct drm_crtc_state *state) { - return state->mode_changed || state->active_changed; + return state->mode_changed || state->active_changed || + state->connectors_changed; } diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 3071319ea194..90a0ff70384a 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -255,12 +255,13 @@ struct drm_atomic_state; * @crtc: backpointer to the CRTC * @enable: whether the CRTC should be enabled, gates all other state * @active: whether the CRTC is actively displaying (used for DPMS) - * @mode_changed: for use by helpers and drivers when computing state updates - * @active_changed: for use by helpers and drivers when computing state updates + * @planes_changed: planes on this crtc are updated + * @mode_changed: crtc_state->mode or crtc_state->enable has been changed + * @active_changed: crtc_state->active has been toggled. + * @connectors_changed: connectors to this crtc have been updated * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes * @last_vblank_count: for helpers and drivers to capture the vblank of the * update to ensure framebuffer cleanup isn't done too early - * @planes_changed: for use by helpers and drivers when computing state updates * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings * @mode: current mode timings * @event: optional pointer to a DRM event to signal upon completion of the @@ -283,6 +284,7 @@ struct drm_crtc_state { bool planes_changed : 1; bool mode_changed : 1; bool active_changed : 1; + bool connectors_changed : 1; /* attached planes bitmask: * WARNING: transitional helpers do not maintain plane_mask so |