[v2,10/17] drm/i915: Support modeset across multiple pipes

Commit Message

Maarten Lankhorst May 13, 2015, 8:23 p.m. UTC

From: Ander Conselvan de Oliveira <[e-mail]>

Compute new pipe_configs for all crtcs in the atomic state. The commit
part of the mode set (__intel_set_mode()) is already enabled to support
multiple pipes, the only thing missing was calculating a new pipe_config
for every crtc.

Signed-off-by: Maarten Lankhorst <[e-mail]>
---
 drivers/gpu/drm/i915/intel_display.c | 138 +++++++++++++----------------------
 1 file changed, 52 insertions(+), 86 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1c706623f99c..0a2a7b6e198c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -82,8 +82,7 @@  static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
 				   struct intel_crtc_state *pipe_config);
 
-static int intel_set_mode(struct drm_crtc *crtc,
-			  struct drm_atomic_state *state);
+static int intel_set_mode(struct drm_atomic_state *state);
 static int intel_framebuffer_init(struct drm_device *dev,
 				  struct intel_framebuffer *ifb,
 				  struct drm_mode_fb_cmd2 *mode_cmd,
@@ -9830,7 +9829,7 @@  retry:
 
 	drm_mode_copy(&crtc_state->base.mode, mode);
 
-	if (intel_set_mode(crtc, state)) {
+	if (intel_set_mode(state)) {
 		DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
 		if (old->release_fb)
 			old->release_fb->funcs->destroy(old->release_fb);
@@ -9904,7 +9903,7 @@  void intel_release_load_detect_pipe(struct drm_connector *connector,
 		if (ret)
 			goto fail;
 
-		ret = intel_set_mode(crtc, state);
+		ret = intel_set_mode(state);
 		if (ret)
 			goto fail;
 
@@ -11373,9 +11372,10 @@  clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
 
 static int
 intel_modeset_pipe_config(struct drm_crtc *crtc,
-			  struct drm_atomic_state *state,
-			  struct intel_crtc_state *pipe_config)
+			  struct drm_atomic_state *state)
 {
+	struct drm_crtc_state *crtc_state;
+	struct intel_crtc_state *pipe_config;
 	struct intel_encoder *encoder;
 	struct drm_connector *connector;
 	struct drm_connector_state *connector_state;
@@ -11393,6 +11393,12 @@  intel_modeset_pipe_config(struct drm_crtc *crtc,
 		return -EINVAL;
 	}
 
+	crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
+	if (WARN_ON(!crtc_state))
+		return -EINVAL;
+
+	pipe_config = to_intel_crtc_state(crtc_state);
+
 	/*
 	 * XXX: Add all connectors to make the crtc state match the encoders.
 	 */
@@ -12107,45 +12113,35 @@  static void update_scanline_offset(struct intel_crtc *crtc)
 		crtc->scanline_offset = 1;
 }
 
-static struct intel_crtc_state *
-intel_modeset_compute_config(struct drm_crtc *crtc,
-			     struct drm_atomic_state *state)
+static int
+intel_modeset_compute_config(struct drm_atomic_state *state)
 {
-	struct intel_crtc_state *pipe_config;
-	int ret = 0;
+	struct drm_crtc *crtc;
+	struct drm_crtc_state *crtc_state;
+	int ret, i;
 
 	ret = drm_atomic_helper_check_modeset(state->dev, state);
 	if (ret)
-		return ERR_PTR(ret);
-
-	/*
-	 * Note this needs changes when we start tracking multiple modes
-	 * and crtcs.  At that point we'll need to compute the whole config
-	 * (i.e. one pipe_config for each crtc) rather than just the one
-	 * for this crtc.
-	 */
-	pipe_config = intel_atomic_get_crtc_state(state, to_intel_crtc(crtc));
-	if (IS_ERR(pipe_config))
-		return pipe_config;
-
-	if (!pipe_config->base.enable &&
-	    WARN_ON(pipe_config->base.active))
-		pipe_config->base.active = false;
+		return ret;
 
-	if (!pipe_config->base.enable)
-		return pipe_config;
+	for_each_crtc_in_state(state, crtc, crtc_state, i) {
+		if (!crtc_state->enable &&
+		    WARN_ON(crtc_state->active))
+			crtc_state->active = false;
 
-	ret = intel_modeset_pipe_config(crtc, state, pipe_config);
-	if (ret)
-		return ERR_PTR(ret);
+		if (!crtc_state->enable)
+			continue;
 
-	intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config, "[modeset]");
+		ret = intel_modeset_pipe_config(crtc, state);
+		if (ret)
+			return ret;
 
-	ret = drm_atomic_helper_check_planes(state->dev, state);
-	if (ret)
-		return ERR_PTR(ret);
+		intel_dump_pipe_config(to_intel_crtc(crtc),
+				       to_intel_crtc_state(crtc_state),
+				       "[modeset]");
+	}
 
-	return pipe_config;
+	return drm_atomic_helper_check_planes(state->dev, state);
 }
 
 static int __intel_set_mode_setup_plls(struct drm_atomic_state *state)
@@ -12282,37 +12278,27 @@  static int __intel_set_mode(struct drm_atomic_state *state)
 	return 0;
 }
 
-static int intel_set_mode_with_config(struct drm_crtc *crtc,
-				      struct intel_crtc_state *pipe_config)
+static int intel_set_mode_checked(struct drm_atomic_state *state)
 {
+	struct drm_device *dev = state->dev;
 	int ret;
 
-	ret = __intel_set_mode(pipe_config->base.state);
-
+	ret = __intel_set_mode(state);
 	if (ret == 0)
-		intel_modeset_check_state(crtc->dev);
+		intel_modeset_check_state(dev);
 
 	return ret;
 }
 
-static int intel_set_mode(struct drm_crtc *crtc,
-			  struct drm_atomic_state *state)
+static int intel_set_mode(struct drm_atomic_state *state)
 {
-	struct intel_crtc_state *pipe_config;
-	int ret = 0;
-
-	pipe_config = intel_modeset_compute_config(crtc, state);
-	if (IS_ERR(pipe_config)) {
-		ret = PTR_ERR(pipe_config);
-		goto out;
-	}
+	int ret;
 
-	ret = intel_set_mode_with_config(crtc, pipe_config);
+	ret = intel_modeset_compute_config(state);
 	if (ret)
-		goto out;
+		return ret;
 
-out:
-	return ret;
+	return intel_set_mode_checked(state);
 }
 
 void intel_crtc_restore_mode(struct drm_crtc *crtc)
@@ -12384,7 +12370,7 @@  void intel_crtc_restore_mode(struct drm_crtc *crtc)
 	intel_modeset_setup_plane_state(state, crtc, &crtc->mode,
 					crtc->primary->fb, crtc->x, crtc->y);
 
-	ret = intel_set_mode(crtc, state);
+	ret = intel_set_mode(state);
 	if (ret)
 		drm_atomic_state_free(state);
 }
@@ -12542,7 +12528,6 @@  static int intel_crtc_set_config(struct drm_mode_set *set)
 {
 	struct drm_device *dev;
 	struct drm_atomic_state *state = NULL;
-	struct intel_crtc_state *pipe_config;
 	bool primary_plane_was_visible;
 	int ret;
 
@@ -12574,44 +12559,25 @@  static int intel_crtc_set_config(struct drm_mode_set *set)
 	if (ret)
 		goto out;
 
-	pipe_config = intel_modeset_compute_config(set->crtc, state);
-	if (IS_ERR(pipe_config)) {
-		ret = PTR_ERR(pipe_config);
+	primary_plane_was_visible = primary_plane_visible(set->crtc);
+
+	ret = intel_modeset_compute_config(state);
+	if (ret)
 		goto out;
-	}
 
 	intel_update_pipe_size(to_intel_crtc(set->crtc));
 
-	primary_plane_was_visible = primary_plane_visible(set->crtc);
-
-	ret = intel_set_mode_with_config(set->crtc, pipe_config);
-
+	ret = intel_set_mode_checked(state);
 	if (ret == 0 &&
-	    pipe_config->base.enable &&
-	    pipe_config->base.planes_changed &&
-	    !needs_modeset(&pipe_config->base)) {
-		struct intel_crtc *intel_crtc = to_intel_crtc(set->crtc);
-
+	    set->crtc->state->active &&
+	    !needs_modeset(set->crtc->state) &&
+	    !primary_plane_was_visible &&
+	    primary_plane_visible(set->crtc)) {
 		/*
 		 * We need to make sure the primary plane is re-enabled if it
 		 * has previously been turned off.
 		 */
-		if (ret == 0 && !primary_plane_was_visible &&
-		    primary_plane_visible(set->crtc)) {
-			WARN_ON(!intel_crtc->active);
-			intel_post_enable_primary(set->crtc);
-		}
-
-		/*
-		 * In the fastboot case this may be our only check of the
-		 * state after boot.  It would be better to only do it on
-		 * the first update, but we don't have a nice way of doing that
-		 * (and really, set_config isn't used much for high freq page
-		 * flipping, so increasing its cost here shouldn't be a big
-		 * deal).
-		 */
-		if (i915.fastboot && ret == 0)
-			intel_modeset_check_state(set->crtc->dev);
+		intel_post_enable_primary(set->crtc);
 	}
 
 	if (ret) {