1 files changed, 73 insertions, 176 deletions

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 7ed8033aae60..e2531cf59266 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -35,162 +35,6 @@
 #include <drm/drm_plane_helper.h>
 #include "intel_drv.h"
 
-
-/**
- * intel_atomic_check - validate state object
- * @dev: drm device
- * @state: state to validate
- */
-int intel_atomic_check(struct drm_device *dev,
-		       struct drm_atomic_state *state)
-{
-	int nplanes = dev->mode_config.num_total_plane;
-	int ncrtcs = dev->mode_config.num_crtc;
-	int nconnectors = dev->mode_config.num_connector;
-	enum pipe nuclear_pipe = INVALID_PIPE;
-	struct intel_crtc *nuclear_crtc = NULL;
-	struct intel_crtc_state *crtc_state = NULL;
-	int ret;
-	int i;
-	bool not_nuclear = false;
-
-	/*
-	 * FIXME:  At the moment, we only support "nuclear pageflip" on a
-	 * single CRTC.  Cross-crtc updates will be added later.
-	 */
-	for (i = 0; i < nplanes; i++) {
-		struct intel_plane *plane = to_intel_plane(state->planes[i]);
-		if (!plane)
-			continue;
-
-		if (nuclear_pipe == INVALID_PIPE) {
-			nuclear_pipe = plane->pipe;
-		} else if (nuclear_pipe != plane->pipe) {
-			DRM_DEBUG_KMS("i915 only support atomic plane operations on a single CRTC at the moment\n");
-			return -EINVAL;
-		}
-	}
-
-	/*
-	 * FIXME:  We only handle planes for now; make sure there are no CRTC's
-	 * or connectors involved.
-	 */
-	state->allow_modeset = false;
-	for (i = 0; i < ncrtcs; i++) {
-		struct intel_crtc *crtc = to_intel_crtc(state->crtcs[i]);
-		if (crtc)
-			memset(&crtc->atomic, 0, sizeof(crtc->atomic));
-		if (crtc && crtc->pipe != nuclear_pipe)
-			not_nuclear = true;
-		if (crtc && crtc->pipe == nuclear_pipe) {
-			nuclear_crtc = crtc;
-			crtc_state = to_intel_crtc_state(state->crtc_states[i]);
-		}
-	}
-	for (i = 0; i < nconnectors; i++)
-		if (state->connectors[i] != NULL)
-			not_nuclear = true;
-
-	if (not_nuclear) {
-		DRM_DEBUG_KMS("i915 only supports atomic plane operations at the moment\n");
-		return -EINVAL;
-	}
-
-	ret = drm_atomic_helper_check_planes(dev, state);
-	if (ret)
-		return ret;
-
-	/* FIXME: move to crtc atomic check function once it is ready */
-	ret = intel_atomic_setup_scalers(dev, nuclear_crtc, crtc_state);
-	if (ret)
-		return ret;
-
-	return ret;
-}
-
-
-/**
- * intel_atomic_commit - commit validated state object
- * @dev: DRM device
- * @state: the top-level driver state object
- * @async: asynchronous commit
- *
- * This function commits a top-level state object that has been validated
- * with drm_atomic_helper_check().
- *
- * FIXME:  Atomic modeset support for i915 is not yet complete.  At the moment
- * we can only handle plane-related operations and do not yet support
- * asynchronous commit.
- *
- * RETURNS
- * Zero for success or -errno.
- */
-int intel_atomic_commit(struct drm_device *dev,
-			struct drm_atomic_state *state,
-			bool async)
-{
-	int ret;
-	int i;
-
-	if (async) {
-		DRM_DEBUG_KMS("i915 does not yet support async commit\n");
-		return -EINVAL;
-	}
-
-	ret = drm_atomic_helper_prepare_planes(dev, state);
-	if (ret)
-		return ret;
-
-	/* Point of no return */
-
-	/*
-	 * FIXME:  The proper sequence here will eventually be:
-	 *
-	 * drm_atomic_helper_swap_state(dev, state)
-	 * drm_atomic_helper_commit_modeset_disables(dev, state);
-	 * drm_atomic_helper_commit_planes(dev, state);
-	 * drm_atomic_helper_commit_modeset_enables(dev, state);
-	 * drm_atomic_helper_wait_for_vblanks(dev, state);
-	 * drm_atomic_helper_cleanup_planes(dev, state);
-	 * drm_atomic_state_free(state);
-	 *
-	 * once we have full atomic modeset.  For now, just manually update
-	 * plane states to avoid clobbering good states with dummy states
-	 * while nuclear pageflipping.
-	 */
-	for (i = 0; i < dev->mode_config.num_total_plane; i++) {
-		struct drm_plane *plane = state->planes[i];
-
-		if (!plane)
-			continue;
-
-		plane->state->state = state;
-		swap(state->plane_states[i], plane->state);
-		plane->state->state = NULL;
-	}
-
-	/* swap crtc_scaler_state */
-	for (i = 0; i < dev->mode_config.num_crtc; i++) {
-		struct drm_crtc *crtc = state->crtcs[i];
-		if (!crtc) {
-			continue;
-		}
-
-		to_intel_crtc(crtc)->config->scaler_state =
-			to_intel_crtc_state(state->crtc_states[i])->scaler_state;
-
-		if (INTEL_INFO(dev)->gen >= 9)
-			skl_detach_scalers(to_intel_crtc(crtc));
-	}
-
-	drm_atomic_helper_commit_planes(dev, state);
-	drm_atomic_helper_wait_for_vblanks(dev, state);
-	drm_atomic_helper_cleanup_planes(dev, state);
-	drm_atomic_state_free(state);
-
-	return 0;
-}
-
 /**
  * intel_connector_atomic_get_property - fetch connector property value
  * @connector: connector to fetch property for
@@ -298,17 +142,12 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
 	struct drm_plane *plane = NULL;
 	struct intel_plane *intel_plane;
 	struct intel_plane_state *plane_state = NULL;
-	struct intel_crtc_scaler_state *scaler_state;
-	struct drm_atomic_state *drm_state;
+	struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+	struct drm_atomic_state *drm_state = crtc_state->base.state;
 	int num_scalers_need;
 	int i, j;
 
-	if (INTEL_INFO(dev)->gen < 9 || !intel_crtc || !crtc_state)
-		return 0;
-
-	scaler_state = &crtc_state->scaler_state;
-	drm_state = crtc_state->base.state;
-
 	num_scalers_need = hweight32(scaler_state->scaler_users);
 	DRM_DEBUG_KMS("crtc_state = %p need = %d avail = %d scaler_users = 0x%x\n",
 		crtc_state, num_scalers_need, intel_crtc->num_scalers,
@@ -336,17 +175,21 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
 	/* walkthrough scaler_users bits and start assigning scalers */
 	for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
 		int *scaler_id;
+		const char *name;
+		int idx;
 
 		/* skip if scaler not required */
 		if (!(scaler_state->scaler_users & (1 << i)))
 			continue;
 
 		if (i == SKL_CRTC_INDEX) {
+			name = "CRTC";
+			idx = intel_crtc->base.base.id;
+
 			/* panel fitter case: assign as a crtc scaler */
 			scaler_id = &scaler_state->scaler_id;
 		} else {
-			if (!drm_state)
-				continue;
+			name = "PLANE";
 
 			/* plane scaler case: assign as a plane scaler */
 			/* find the plane that set the bit as scaler_user */
@@ -365,9 +208,19 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
 						plane->base.id);
 					return PTR_ERR(state);
 				}
+
+				/*
+				 * the plane is added after plane checks are run,
+				 * but since this plane is unchanged just do the
+				 * minimum required validation.
+				 */
+				if (plane->type == DRM_PLANE_TYPE_PRIMARY)
+					intel_crtc->atomic.wait_for_flips = true;
+				crtc_state->base.planes_changed = true;
 			}
 
 			intel_plane = to_intel_plane(plane);
+			idx = plane->base.id;
 
 			/* plane on different crtc cannot be a scaler user of this crtc */
 			if (WARN_ON(intel_plane->pipe != intel_crtc->pipe)) {
@@ -383,23 +236,16 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
 			for (j = 0; j < intel_crtc->num_scalers; j++) {
 				if (!scaler_state->scalers[j].in_use) {
 					scaler_state->scalers[j].in_use = 1;
-					*scaler_id = scaler_state->scalers[j].id;
+					*scaler_id = j;
 					DRM_DEBUG_KMS("Attached scaler id %u.%u to %s:%d\n",
-						intel_crtc->pipe,
-						i == SKL_CRTC_INDEX ? scaler_state->scaler_id :
-							plane_state->scaler_id,
-						i == SKL_CRTC_INDEX ? "CRTC" : "PLANE",
-						i == SKL_CRTC_INDEX ?  intel_crtc->base.base.id :
-						plane->base.id);
+						intel_crtc->pipe, *scaler_id, name, idx);
 					break;
 				}
 			}
 		}
 
 		if (WARN_ON(*scaler_id < 0)) {
-			DRM_DEBUG_KMS("Cannot find scaler for %s:%d\n",
-				i == SKL_CRTC_INDEX ? "CRTC" : "PLANE",
-				i == SKL_CRTC_INDEX ? intel_crtc->base.base.id:plane->base.id);
+			DRM_DEBUG_KMS("Cannot find scaler for %s:%d\n", name, idx);
 			continue;
 		}
 
@@ -421,3 +267,54 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
 
 	return 0;
 }
+
+static void
+intel_atomic_duplicate_dpll_state(struct drm_i915_private *dev_priv,
+				  struct intel_shared_dpll_config *shared_dpll)
+{
+	enum intel_dpll_id i;
+
+	/* Copy shared dpll state */
+	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+		struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
+
+		shared_dpll[i] = pll->config;
+	}
+}
+
+struct intel_shared_dpll_config *
+intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(s);
+
+	WARN_ON(!drm_modeset_is_locked(&s->dev->mode_config.connection_mutex));
+
+	if (!state->dpll_set) {
+		state->dpll_set = true;
+
+		intel_atomic_duplicate_dpll_state(to_i915(s->dev),
+						  state->shared_dpll);
+	}
+
+	return state->shared_dpll;
+}
+
+struct drm_atomic_state *
+intel_atomic_state_alloc(struct drm_device *dev)
+{
+	struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
+
+	if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
+		kfree(state);
+		return NULL;
+	}
+
+	return &state->base;
+}
+
+void intel_atomic_state_clear(struct drm_atomic_state *s)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(s);
+	drm_atomic_state_default_clear(&state->base);
+	state->dpll_set = false;
+}