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From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH v2 1/6] drm/i915: Use atomic state to obtain load detection crtc, v2.
Date: Tue, 2 Feb 2016 13:48:17 +0100	[thread overview]
Message-ID: <56B0A591.1040801@linux.intel.com> (raw)
In-Reply-To: <1454334242-23354-2-git-send-email-maarten.lankhorst@linux.intel.com>

drm/i915: Use atomic state to obtain load detection crtc, v2.

Instead of restoring dpms and a flag for whether a temp fb is allocated duplicate
an atomic state before the new state is committed, and commit it the old state
in intel_release_load_detect_pipe.

Changes since v1:
- Use a real atomic state.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4d8c9f7857db..c7ba8f4a971e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10361,6 +10361,7 @@ mode_fits_in_fbdev(struct drm_device *dev,
 	if (obj->base.size < mode->vdisplay * fb->pitches[0])
 		return NULL;
 
+	drm_framebuffer_reference(fb);
 	return fb;
 #else
 	return NULL;
@@ -10416,7 +10417,7 @@ bool intel_get_load_detect_pipe(struct drm_connector *connector,
 	struct drm_device *dev = encoder->dev;
 	struct drm_framebuffer *fb;
 	struct drm_mode_config *config = &dev->mode_config;
-	struct drm_atomic_state *state = NULL;
+	struct drm_atomic_state *state = NULL, *restore_state = NULL;
 	struct drm_connector_state *connector_state;
 	struct intel_crtc_state *crtc_state;
 	int ret, i = -1;
@@ -10425,6 +10426,8 @@ bool intel_get_load_detect_pipe(struct drm_connector *connector,
 		      connector->base.id, connector->name,
 		      encoder->base.id, encoder->name);
 
+	old->restore_state = NULL;
+
 retry:
 	ret = drm_modeset_lock(&config->connection_mutex, ctx);
 	if (ret)
@@ -10441,24 +10444,15 @@ retry:
 	 */
 
 	/* See if we already have a CRTC for this connector */
-	if (encoder->crtc) {
-		crtc = encoder->crtc;
+	if (connector->state->crtc) {
+		crtc = connector->state->crtc;
 
 		ret = drm_modeset_lock(&crtc->mutex, ctx);
 		if (ret)
 			goto fail;
-		ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
-		if (ret)
-			goto fail;
-
-		old->dpms_mode = connector->dpms;
-		old->load_detect_temp = false;
 
 		/* Make sure the crtc and connector are running */
-		if (connector->dpms != DRM_MODE_DPMS_ON)
-			connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
-
-		return true;
+		goto found;
 	}
 
 	/* Find an unused one (if possible) */
@@ -10466,8 +10460,15 @@ retry:
 		i++;
 		if (!(encoder->possible_crtcs & (1 << i)))
 			continue;
-		if (possible_crtc->state->enable)
+
+		ret = drm_modeset_lock(&possible_crtc->mutex, ctx);
+		if (ret)
+			goto fail;
+
+		if (possible_crtc->state->enable) {
+			drm_modeset_unlock(&possible_crtc->mutex);
 			continue;
+		}
 
 		crtc = possible_crtc;
 		break;
@@ -10481,23 +10482,22 @@ retry:
 		goto fail;
 	}
 
-	ret = drm_modeset_lock(&crtc->mutex, ctx);
-	if (ret)
-		goto fail;
+found:
+	intel_crtc = to_intel_crtc(crtc);
+
 	ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
 	if (ret)
 		goto fail;
 
-	intel_crtc = to_intel_crtc(crtc);
-	old->dpms_mode = connector->dpms;
-	old->load_detect_temp = true;
-	old->release_fb = NULL;
-
 	state = drm_atomic_state_alloc(dev);
-	if (!state)
-		return false;
+	restore_state = drm_atomic_state_alloc(dev);
+	if (!state || !restore_state) {
+		ret = -ENOMEM;
+		goto fail;
+	}
 
 	state->acquire_ctx = ctx;
+	restore_state->acquire_ctx = ctx;
 
 	connector_state = drm_atomic_get_connector_state(state, connector);
 	if (IS_ERR(connector_state)) {
@@ -10505,7 +10505,9 @@ retry:
 		goto fail;
 	}
 
-	connector_state->crtc = crtc;
+	ret = drm_atomic_set_crtc_for_connector(connector_state, crtc);
+	if (ret)
+		goto fail;
 
 	crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
 	if (IS_ERR(crtc_state)) {
@@ -10529,7 +10531,6 @@ retry:
 	if (fb == NULL) {
 		DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
 		fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
-		old->release_fb = fb;
 	} else
 		DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
 	if (IS_ERR(fb)) {
@@ -10541,15 +10542,28 @@ retry:
 	if (ret)
 		goto fail;
 
-	drm_mode_copy(&crtc_state->base.mode, mode);
+	drm_framebuffer_unreference(fb);
+
+	ret = drm_atomic_set_mode_for_crtc(&crtc_state->base, mode);
+	if (ret)
+		goto fail;
+
+	ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
+	if (!ret)
+		ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
+	if (!ret)
+		ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(restore_state, crtc->primary));
+	if (ret) {
+		DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret);
+		goto fail;
+	}
 
 	if (drm_atomic_commit(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);
 		goto fail;
 	}
-	crtc->primary->crtc = crtc;
+
+	old->restore_state = restore_state;
 
 	/* let the connector get through one full cycle before testing */
 	intel_wait_for_vblank(dev, intel_crtc->pipe);
@@ -10557,7 +10571,8 @@ retry:
 
 fail:
 	drm_atomic_state_free(state);
-	state = NULL;
+	drm_atomic_state_free(restore_state);
+	restore_state = state = NULL;
 
 	if (ret == -EDEADLK) {
 		drm_modeset_backoff(ctx);
@@ -10571,14 +10586,12 @@ void intel_release_load_detect_pipe(struct drm_connector *connector,
 				    struct intel_load_detect_pipe *old,
 				    struct drm_modeset_acquire_ctx *ctx)
 {
-	struct drm_device *dev = connector->dev;
 	struct intel_encoder *intel_encoder =
 		intel_attached_encoder(connector);
 	struct drm_encoder *encoder = &intel_encoder->base;
-	struct drm_crtc *crtc = encoder->crtc;
+	struct drm_crtc *crtc = connector->state->crtc;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct drm_atomic_state *state;
-	struct drm_connector_state *connector_state;
+	struct drm_atomic_state *state = old->restore_state;
 	struct intel_crtc_state *crtc_state;
 	int ret;
 
@@ -10586,50 +10599,17 @@ void intel_release_load_detect_pipe(struct drm_connector *connector,
 		      connector->base.id, connector->name,
 		      encoder->base.id, encoder->name);
 
-	if (old->load_detect_temp) {
-		state = drm_atomic_state_alloc(dev);
-		if (!state)
-			goto fail;
-
-		state->acquire_ctx = ctx;
-
-		connector_state = drm_atomic_get_connector_state(state, connector);
-		if (IS_ERR(connector_state))
-			goto fail;
-
-		crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
-		if (IS_ERR(crtc_state))
-			goto fail;
-
-		connector_state->crtc = NULL;
-
-		crtc_state->base.enable = crtc_state->base.active = false;
-
-		ret = intel_modeset_setup_plane_state(state, crtc, NULL, NULL,
-						      0, 0);
-		if (ret)
-			goto fail;
-
-		ret = drm_atomic_commit(state);
-		if (ret)
-			goto fail;
-
-		if (old->release_fb) {
-			drm_framebuffer_unregister_private(old->release_fb);
-			drm_framebuffer_unreference(old->release_fb);
-		}
-
+	if (!state)
 		return;
-	}
 
-	/* Switch crtc and encoder back off if necessary */
-	if (old->dpms_mode != DRM_MODE_DPMS_ON)
-		connector->funcs->dpms(connector, old->dpms_mode);
+	crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
+	crtc_state->shared_dpll = to_intel_crtc_state(crtc->state)->shared_dpll;
 
-	return;
-fail:
-	DRM_DEBUG_KMS("Couldn't release load detect pipe.\n");
-	drm_atomic_state_free(state);
+	ret = drm_atomic_commit(state);
+	if (ret) {
+		DRM_DEBUG_KMS("Couldn't release load detect pipe: %i\n", ret);
+		drm_atomic_state_free(state);
+	}
 }
 
 static int i9xx_pll_refclk(struct drm_device *dev,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 93ba14a3bb76..7d10ca7797a9 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -912,9 +912,7 @@ struct intel_unpin_work {
 };
 
 struct intel_load_detect_pipe {
-	struct drm_framebuffer *release_fb;
-	bool load_detect_temp;
-	int dpms_mode;
+	struct drm_atomic_state *restore_state;
 };
 
 static inline struct intel_encoder *

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  parent reply	other threads:[~2016-02-02 12:48 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-01 13:43 [PATCH 0/6] Use more atomic state in i915 Maarten Lankhorst
2016-02-01 13:43 ` [PATCH 1/6] drm/i915: Use atomic state to obtain load detection crtc Maarten Lankhorst
2016-02-01 16:08   ` Ville Syrjälä
2016-02-02 10:41     ` Maarten Lankhorst
2016-02-01 17:09   ` Ville Syrjälä
2016-02-02 12:46     ` Maarten Lankhorst
2016-02-02 12:48   ` Maarten Lankhorst [this message]
2016-02-02 17:32     ` [PATCH v2 1/6] drm/i915: Use atomic state to obtain load detection crtc, v2 Ville Syrjälä
2016-02-03  8:57       ` Maarten Lankhorst
2016-02-03 16:34         ` Ville Syrjälä
2016-02-09  8:57           ` Maarten Lankhorst
2016-02-09 12:52           ` [PATCH 1/3] drm/i915: Clear shared dpll based on old state Maarten Lankhorst
2016-02-09 12:52             ` [PATCH 2/3] drm/i915: Use atomic helpers for suspend Maarten Lankhorst
2016-02-09 13:37               ` Ville Syrjälä
2016-02-09 14:05                 ` Maarten Lankhorst
2016-02-09 14:58                   ` Ville Syrjälä
2016-02-15 12:34                     ` Maarten Lankhorst
2016-02-16  9:06                     ` [PATCH v2 2/3] drm/i915: Use atomic helpers for suspend, v2 Maarten Lankhorst
2016-02-16  9:55                       ` Ville Syrjälä
2016-02-09 12:52             ` [PATCH 3/3] drm/i915: Use atomic state to obtain load detection crtc, v3 Maarten Lankhorst
2016-02-16 11:13               ` Ville Syrjälä
2016-02-09 13:25             ` [PATCH 1/3] drm/i915: Clear shared dpll based on old state Ville Syrjälä
2016-02-11  8:56   ` [PATCH 1/6] drm/i915: Use atomic state to obtain load detection crtc Daniel Vetter
2016-02-01 13:43 ` [PATCH 2/6] drm/i915: Use atomic state in crt load detection Maarten Lankhorst
2016-02-01 13:43 ` [PATCH 3/6] drm/i915: Use atomic state in tv " Maarten Lankhorst
2016-02-01 13:44 ` [PATCH 4/6] drm/i915: Use correct dpms for intel_enable_crt Maarten Lankhorst
2016-02-01 13:44 ` [IGT PATCH 5/6] kms_force_connector_basic: Add force-load-detect test Maarten Lankhorst
2016-02-11  8:59   ` Daniel Vetter
2016-02-11 11:50     ` Maarten Lankhorst
2016-02-01 13:44 ` [PATCH 6/6] drm/i915: Use atomic state in intel_fb_initial_config Maarten Lankhorst
2016-02-11 14:38   ` Ville Syrjälä

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