Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main pull request for the drm for 4.3.  Nouveau is
  probably the biggest amount of changes in here, since it missed 4.2.
  Highlights below, along with the usual bunch of fixes.

  All stuff outside drm should have applicable acks.

  Highlights:

   - new drivers:
        freescale dcu kms driver

   - core:
        more atomic fixes
        disable some dri1 interfaces on kms drivers
        drop fb panic handling, this was just getting more broken, as more locking was required.
        new core fbdev Kconfig support - instead of each driver enable/disabling it
        struct_mutex cleanups

   - panel:
        more new panels
        cleanup Kconfig

   - i915:
        Skylake support enabled by default
        legacy modesetting using atomic infrastructure
        Skylake fixes
        GEN9 workarounds

   - amdgpu:
        Fiji support
        CGS support for amdgpu
        Initial GPU scheduler - off by default
        Lots of bug fixes and optimisations.

   - radeon:
        DP fixes
        misc fixes

   - amdkfd:
        Add Carrizo support for amdkfd using amdgpu.

   - nouveau:
        long pending cleanup to complete driver,
        fully bisectable which makes it larger,
        perfmon work
        more reclocking improvements
        maxwell displayport fixes

   - vmwgfx:
        new DX device support, supports OpenGL 3.3
        screen targets support

   - mgag200:
        G200eW support
        G200e new revision support

   - msm:
        dragonboard 410c support, msm8x94 support, msm8x74v1 support
        yuv format support
        dma plane support
        mdp5 rotation
        initial hdcp

   - sti:
        atomic support

   - exynos:
        lots of cleanups
        atomic modesetting/pageflipping support
        render node support

   - tegra:
        tegra210 support (dc, dsi, dp/hdmi)
        dpms with atomic modesetting support

   - atmel:
        support for 3 more atmel SoCs
        new input formats, PRIME support.

   - dwhdmi:
        preparing to add audio support

   - rockchip:
        yuv plane support"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (1369 commits)
  drm/amdgpu: rename gmc_v8_0_init_compute_vmid
  drm/amdgpu: fix vce3 instance handling
  drm/amdgpu: remove ib test for the second VCE Ring
  drm/amdgpu: properly enable VM fault interrupts
  drm/amdgpu: fix warning in scheduler
  drm/amdgpu: fix buffer placement under memory pressure
  drm/amdgpu/cz: fix cz_dpm_update_low_memory_pstate logic
  drm/amdgpu: fix typo in dce11 watermark setup
  drm/amdgpu: fix typo in dce10 watermark setup
  drm/amdgpu: use top down allocation for non-CPU accessible vram
  drm/amdgpu: be explicit about cpu vram access for driver BOs (v2)
  drm/amdgpu: set MEC doorbell range for Fiji
  drm/amdgpu: implement burst NOP for SDMA
  drm/amdgpu: add insert_nop ring func and default implementation
  drm/amdgpu: add amdgpu_get_sdma_instance helper function
  drm/amdgpu: add AMDGPU_MAX_SDMA_INSTANCES
  drm/amdgpu: add burst_nop flag for sdma
  drm/amdgpu: add count field for the SDMA NOP packet v2
  drm/amdgpu: use PT for VM sync on unmap
  drm/amdgpu: make wait_event uninterruptible in push_job
  ...

drivers/gpu/drm/drm_atomic_helper.c

@@ -89,7 +89,7 @@ get_current_crtc_for_encoder(struct drm_device *dev,
 
 	WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
 
-	list_for_each_entry(connector, &config->connector_list, head) {
+	drm_for_each_connector(connector, dev) {
 		if (connector->state->best_encoder != encoder)
 			continue;
 
@@ -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;
 		}
 	}
 
@@ -241,7 +241,7 @@ 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,
@@ -264,7 +264,8 @@ 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);
@@ -306,7 +307,7 @@ mode_fixup(struct drm_atomic_state *state)
 						 encoder->base.id, encoder->name);
 				return ret;
 			}
-		} else {
+		} else if (funcs->mode_fixup) {
 			ret = funcs->mode_fixup(encoder, &crtc_state->mode,
 						&crtc_state->adjusted_mode);
 			if (!ret) {
@@ -320,7 +321,8 @@ 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;
@@ -346,9 +348,14 @@ 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:
  *
@@ -381,7 +388,17 @@ 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;
 		}
 	}
 
@@ -456,6 +473,9 @@ 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
  */
@@ -648,15 +668,29 @@ drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
 	struct drm_crtc_state *old_crtc_state;
 	int i;
 
-	/* clear out existing links */
+	/* clear out existing links and update dpms */
 	for_each_connector_in_state(old_state, connector, old_conn_state, i) {
-		if (!connector->encoder)
-			continue;
+		if (connector->encoder) {
+			WARN_ON(!connector->encoder->crtc);
 
-		WARN_ON(!connector->encoder->crtc);
+			connector->encoder->crtc = NULL;
+			connector->encoder = NULL;
+		}
 
-		connector->encoder->crtc = NULL;
-		connector->encoder = NULL;
+		crtc = connector->state->crtc;
+		if ((!crtc && old_conn_state->crtc) ||
+		    (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) {
+			struct drm_property *dpms_prop =
+				dev->mode_config.dpms_property;
+			int mode = DRM_MODE_DPMS_OFF;
+
+			if (crtc && crtc->state->active)
+				mode = DRM_MODE_DPMS_ON;
+
+			connector->dpms = mode;
+			drm_object_property_set_value(&connector->base,
+						      dpms_prop, mode);
+		}
 	}
 
 	/* set new links */
@@ -673,10 +707,16 @@ drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
 
 	/* set legacy state in the crtc structure */
 	for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+		struct drm_plane *primary = crtc->primary;
+
 		crtc->mode = crtc->state->mode;
 		crtc->enabled = crtc->state->enable;
-		crtc->x = crtc->primary->state->src_x >> 16;
-		crtc->y = crtc->primary->state->src_y >> 16;
+
+		if (drm_atomic_get_existing_plane_state(old_state, primary) &&
+		    primary->state->crtc == crtc) {
+			crtc->x = primary->state->src_x >> 16;
+			crtc->y = primary->state->src_y >> 16;
+		}
 
 		if (crtc->state->enable)
 			drm_calc_timestamping_constants(crtc,
@@ -926,7 +966,7 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
 			continue;
 
 		old_crtc_state->enable = true;
-		old_crtc_state->last_vblank_count = drm_vblank_count(dev, i);
+		old_crtc_state->last_vblank_count = drm_crtc_vblank_count(crtc);
 	}
 
 	for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
@@ -935,7 +975,7 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
 
 		ret = wait_event_timeout(dev->vblank[i].queue,
 				old_crtc_state->last_vblank_count !=
-					drm_vblank_count(dev, i),
+					drm_crtc_vblank_count(crtc),
 				msecs_to_jiffies(50));
 
 		drm_crtc_vblank_put(crtc);
@@ -1146,7 +1186,7 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev,
 		if (!funcs || !funcs->atomic_begin)
 			continue;
 
-		funcs->atomic_begin(crtc);
+		funcs->atomic_begin(crtc, old_crtc_state);
 	}
 
 	for_each_plane_in_state(old_state, plane, old_plane_state, i) {
@@ -1176,7 +1216,7 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev,
 		if (!funcs || !funcs->atomic_flush)
 			continue;
 
-		funcs->atomic_flush(crtc);
+		funcs->atomic_flush(crtc, old_crtc_state);
 	}
 }
 EXPORT_SYMBOL(drm_atomic_helper_commit_planes);
@@ -1212,7 +1252,7 @@ drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state)
 
 	crtc_funcs = crtc->helper_private;
 	if (crtc_funcs && crtc_funcs->atomic_begin)
-		crtc_funcs->atomic_begin(crtc);
+		crtc_funcs->atomic_begin(crtc, old_crtc_state);
 
 	drm_for_each_plane_mask(plane, crtc->dev, plane_mask) {
 		struct drm_plane_state *old_plane_state =
@@ -1235,7 +1275,7 @@ drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state)
 	}
 
 	if (crtc_funcs && crtc_funcs->atomic_flush)
-		crtc_funcs->atomic_flush(crtc);
+		crtc_funcs->atomic_flush(crtc, old_crtc_state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc);
 
@@ -1923,10 +1963,6 @@ retry:
 	if (ret != 0)
 		goto fail;
 
-	/* TODO: ->page_flip is the only driver callback where the core
-	 * doesn't update plane->fb. For now patch it up here. */
-	plane->fb = plane->state->fb;
-
 	/* Driver takes ownership of state on successful async commit. */
 	return 0;
 fail:
@@ -1960,9 +1996,12 @@ EXPORT_SYMBOL(drm_atomic_helper_page_flip);
  * implementing the legacy DPMS connector interface. It computes the new desired
  * ->active state for the corresponding CRTC (if the connector is enabled) and
  *  updates it.
+ *
+ * Returns:
+ * Returns 0 on success, negative errno numbers on failure.
  */
-void drm_atomic_helper_connector_dpms(struct drm_connector *connector,
-				      int mode)
+int drm_atomic_helper_connector_dpms(struct drm_connector *connector,
+				     int mode)
 {
 	struct drm_mode_config *config = &connector->dev->mode_config;
 	struct drm_atomic_state *state;
@@ -1971,6 +2010,7 @@ void drm_atomic_helper_connector_dpms(struct drm_connector *connector,
 	struct drm_connector *tmp_connector;
 	int ret;
 	bool active = false;
+	int old_mode = connector->dpms;
 
 	if (mode != DRM_MODE_DPMS_ON)
 		mode = DRM_MODE_DPMS_OFF;
@@ -1979,22 +2019,23 @@ void drm_atomic_helper_connector_dpms(struct drm_connector *connector,
 	crtc = connector->state->crtc;
 
 	if (!crtc)
-		return;
+		return 0;
 
-	/* FIXME: ->dpms has no return value so can't forward the -ENOMEM. */
 	state = drm_atomic_state_alloc(connector->dev);
 	if (!state)
-		return;
+		return -ENOMEM;
 
 	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
 retry:
 	crtc_state = drm_atomic_get_crtc_state(state, crtc);
-	if (IS_ERR(crtc_state))
-		return;
+	if (IS_ERR(crtc_state)) {
+		ret = PTR_ERR(crtc_state);
+		goto fail;
+	}
 
 	WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
 
-	list_for_each_entry(tmp_connector, &config->connector_list, head) {
+	drm_for_each_connector(tmp_connector, connector->dev) {
 		if (tmp_connector->state->crtc != crtc)
 			continue;
 
@@ -2009,17 +2050,16 @@ retry:
 	if (ret != 0)
 		goto fail;
 
-	/* Driver takes ownership of state on successful async commit. */
-	return;
+	/* Driver takes ownership of state on successful commit. */
+	return 0;
 fail:
 	if (ret == -EDEADLK)
 		goto backoff;
 
+	connector->dpms = old_mode;
 	drm_atomic_state_free(state);
 
-	WARN(1, "Driver bug: Changing ->active failed with ret=%i\n", ret);
-
-	return;
+	return ret;
 backoff:
 	drm_atomic_state_clear(state);
 	drm_atomic_legacy_backoff(state);
@@ -2080,6 +2120,7 @@ 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);