[PATCH 1/6] drm/atomic: add connectors_changed to separate it from mode_changed, v2

[PATCH 1/6] drm/atomic: add connectors_changed to separate it from mode_changed, v2

[Maarten Lankhorst]

This can be a separate case from mode_changed, when connectors stay the
same but only the mode is different. Drivers may choose to implement specific
optimizations to prevent a full modeset for this case.

Changes since v1:
- Update kerneldocs slightly.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 drivers/gpu/drm/drm_atomic_helper.c  | 39 +++++++++++++++++++++++++++---------
 drivers/gpu/drm/i915/intel_display.c |  2 +-
 include/drm/drm_atomic.h             |  3 ++-
 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 0ea8c5d476ef..ac6601071414 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
  */
@@ -2081,6 +2101,7 @@ 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 6867267115ce..671ca2820f82 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 8159a0627b6b..3628bd89abf6 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
-- 
2.1.0

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Re: [PATCH 1/6] drm/atomic: add connectors_changed to separate it from mode_changed, v2

[Ander Conselvan De Oliveira]

On Tue, 2015-07-21 at 13:28 +0200, Maarten Lankhorst wrote:
> This can be a separate case from mode_changed, when connectors stay 
> the
> same but only the mode is different. Drivers may choose to implement 
> specific
> optimizations to prevent a full modeset for this case.
> 
> Changes since v1:
> - Update kerneldocs slightly.
> 
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

I have a couple of nits below, but anyway,

Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>

> ---
>  drivers/gpu/drm/drm_atomic_helper.c  | 39 
> +++++++++++++++++++++++++++---------
>  drivers/gpu/drm/i915/intel_display.c |  2 +-
>  include/drm/drm_atomic.h             |  3 ++-
>  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 0ea8c5d476ef..ac6601071414 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;
>  

There's a comment above the call to update_connector_routing() that
mentions setting crtc_state->mode_changed. That should be updated to
reflect the changes above.

>  	DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on 
> [CRTC:%d]\n",
>  			 connector->base.id,
> 

[...]

> @@ -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

The first 'and' should be replaced with a comma.

[...]

Ander
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[PATCH 2/6] drm/atomic: pass old crtc state to atomic_begin/flush.

[Maarten Lankhorst]

In intel it's useful to keep track of some state changes with old
crtc state vs new state, for example to disable initial planes or
when a modeset's prevented during fastboot.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c |  6 ++++--
 drivers/gpu/drm/drm_atomic_helper.c            |  8 ++++----
 drivers/gpu/drm/drm_plane_helper.c             |  4 ++--
 drivers/gpu/drm/i915/intel_display.c           | 10 ++++++----
 drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c       |  6 ++++--
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c       |  6 ++++--
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c         |  6 ++++--
 drivers/gpu/drm/sti/sti_drm_crtc.c             |  6 ++++--
 drivers/gpu/drm/tegra/dc.c                     |  6 ++++--
 include/drm/drm_crtc_helper.h                  |  6 ++++--
 10 files changed, 40 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index f69b92535505..8b8fe3762ca9 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -239,7 +239,8 @@ static int atmel_hlcdc_crtc_atomic_check(struct drm_crtc *c,
 	return atmel_hlcdc_plane_prepare_disc_area(s);
 }
 
-static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c)
+static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c,
+					  struct drm_crtc_state *old_s)
 {
 	struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
 
@@ -253,7 +254,8 @@ static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c)
 	}
 }
 
-static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc)
+static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc,
+					  struct drm_crtc_state *old_s)
 {
 	/* TODO: write common plane control register if available */
 }
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index ac6601071414..4a48d76c4fb1 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1170,7 +1170,7 @@ 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) {
@@ -1200,7 +1200,7 @@ 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);
@@ -1236,7 +1236,7 @@ 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 =
@@ -1259,7 +1259,7 @@ 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);
 
diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
index 03b7afe455e6..cb5dab4c4337 100644
--- a/drivers/gpu/drm/drm_plane_helper.c
+++ b/drivers/gpu/drm/drm_plane_helper.c
@@ -436,7 +436,7 @@ int drm_plane_helper_commit(struct drm_plane *plane,
 
 	for (i = 0; i < 2; i++) {
 		if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin)
-			crtc_funcs[i]->atomic_begin(crtc[i]);
+			crtc_funcs[i]->atomic_begin(crtc[i], crtc[i]->state);
 	}
 
 	/*
@@ -451,7 +451,7 @@ int drm_plane_helper_commit(struct drm_plane *plane,
 
 	for (i = 0; i < 2; i++) {
 		if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush)
-			crtc_funcs[i]->atomic_flush(crtc[i]);
+			crtc_funcs[i]->atomic_flush(crtc[i], crtc[i]->state);
 	}
 
 	/*
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 671ca2820f82..def9444eeae2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -102,8 +102,8 @@ static void vlv_prepare_pll(struct intel_crtc *crtc,
 			    const struct intel_crtc_state *pipe_config);
 static void chv_prepare_pll(struct intel_crtc *crtc,
 			    const struct intel_crtc_state *pipe_config);
-static void intel_begin_crtc_commit(struct drm_crtc *crtc);
-static void intel_finish_crtc_commit(struct drm_crtc *crtc);
+static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
+static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
 	struct intel_crtc_state *crtc_state);
 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
@@ -13440,7 +13440,8 @@ intel_disable_primary_plane(struct drm_plane *plane,
 	dev_priv->display.update_primary_plane(crtc, NULL, 0, 0);
 }
 
-static void intel_begin_crtc_commit(struct drm_crtc *crtc)
+static void intel_begin_crtc_commit(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_crtc_state)
 {
 	struct drm_device *dev = crtc->dev;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
@@ -13456,7 +13457,8 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc)
 		skl_detach_scalers(intel_crtc);
 }
 
-static void intel_finish_crtc_commit(struct drm_crtc *crtc)
+static void intel_finish_crtc_commit(struct drm_crtc *crtc,
+				     struct drm_crtc_state *old_crtc_state)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
index c4bb9d9c7667..4dc158ed2e95 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
@@ -334,13 +334,15 @@ static int mdp4_crtc_atomic_check(struct drm_crtc *crtc,
 	return 0;
 }
 
-static void mdp4_crtc_atomic_begin(struct drm_crtc *crtc)
+static void mdp4_crtc_atomic_begin(struct drm_crtc *crtc,
+				   struct drm_crtc_state *old_crtc_state)
 {
 	struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
 	DBG("%s: begin", mdp4_crtc->name);
 }
 
-static void mdp4_crtc_atomic_flush(struct drm_crtc *crtc)
+static void mdp4_crtc_atomic_flush(struct drm_crtc *crtc,
+				   struct drm_crtc_state *old_crtc_state)
 {
 	struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
index dea3d2e559b1..4c1df4e6e5bc 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
@@ -388,13 +388,15 @@ static int mdp5_crtc_atomic_check(struct drm_crtc *crtc,
 	return 0;
 }
 
-static void mdp5_crtc_atomic_begin(struct drm_crtc *crtc)
+static void mdp5_crtc_atomic_begin(struct drm_crtc *crtc,
+				   struct drm_crtc_state *old_crtc_state)
 {
 	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
 	DBG("%s: begin", mdp5_crtc->name);
 }
 
-static void mdp5_crtc_atomic_flush(struct drm_crtc *crtc)
+static void mdp5_crtc_atomic_flush(struct drm_crtc *crtc,
+				   struct drm_crtc_state *old_crtc_state)
 {
 	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 65d6ba6621ac..48cb19949ca3 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -496,7 +496,8 @@ static bool rcar_du_crtc_mode_fixup(struct drm_crtc *crtc,
 	return true;
 }
 
-static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc)
+static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc,
+				      struct drm_crtc_state *old_crtc_state)
 {
 	struct drm_pending_vblank_event *event = crtc->state->event;
 	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
@@ -512,7 +513,8 @@ static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc)
 	}
 }
 
-static void rcar_du_crtc_atomic_flush(struct drm_crtc *crtc)
+static void rcar_du_crtc_atomic_flush(struct drm_crtc *crtc,
+				      struct drm_crtc_state *old_crtc_state)
 {
 	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
 
diff --git a/drivers/gpu/drm/sti/sti_drm_crtc.c b/drivers/gpu/drm/sti/sti_drm_crtc.c
index 6b641c5a2ec7..26e63bf14efe 100644
--- a/drivers/gpu/drm/sti/sti_drm_crtc.c
+++ b/drivers/gpu/drm/sti/sti_drm_crtc.c
@@ -164,7 +164,8 @@ sti_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	sti_drm_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
 }
 
-static void sti_drm_atomic_begin(struct drm_crtc *crtc)
+static void sti_drm_atomic_begin(struct drm_crtc *crtc,
+				 struct drm_crtc_state *old_crtc_state)
 {
 	struct sti_mixer *mixer = to_sti_mixer(crtc);
 
@@ -178,7 +179,8 @@ static void sti_drm_atomic_begin(struct drm_crtc *crtc)
 	}
 }
 
-static void sti_drm_atomic_flush(struct drm_crtc *crtc)
+static void sti_drm_atomic_flush(struct drm_crtc *crtc,
+				 struct drm_crtc_state *old_crtc_state)
 {
 }
 
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index d447701173e6..24b38090dfd3 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1275,7 +1275,8 @@ static int tegra_crtc_atomic_check(struct drm_crtc *crtc,
 	return 0;
 }
 
-static void tegra_crtc_atomic_begin(struct drm_crtc *crtc)
+static void tegra_crtc_atomic_begin(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_crtc_state)
 {
 	struct tegra_dc *dc = to_tegra_dc(crtc);
 
@@ -1289,7 +1290,8 @@ static void tegra_crtc_atomic_begin(struct drm_crtc *crtc)
 	}
 }
 
-static void tegra_crtc_atomic_flush(struct drm_crtc *crtc)
+static void tegra_crtc_atomic_flush(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_crtc_state)
 {
 	struct tegra_dc_state *state = to_dc_state(crtc->state);
 	struct tegra_dc *dc = to_tegra_dc(crtc);
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 4562bd12bb4a..800e0d1cf32c 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -108,8 +108,10 @@ struct drm_crtc_helper_funcs {
 	/* atomic helpers */
 	int (*atomic_check)(struct drm_crtc *crtc,
 			    struct drm_crtc_state *state);
-	void (*atomic_begin)(struct drm_crtc *crtc);
-	void (*atomic_flush)(struct drm_crtc *crtc);
+	void (*atomic_begin)(struct drm_crtc *crtc,
+			     struct drm_crtc_state *old_crtc_state);
+	void (*atomic_flush)(struct drm_crtc *crtc,
+			     struct drm_crtc_state *old_crtc_state);
 };
 
 /**
-- 
2.1.0

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Re: [PATCH 2/6] drm/atomic: pass old crtc state to atomic_begin/flush.

[Ander Conselvan De Oliveira]

Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>

On Tue, 2015-07-21 at 13:28 +0200, Maarten Lankhorst wrote:
> In intel it's useful to keep track of some state changes with old
> crtc state vs new state, for example to disable initial planes or
> when a modeset's prevented during fastboot.
> 
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> ---
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c |  6 ++++--
>  drivers/gpu/drm/drm_atomic_helper.c            |  8 ++++----
>  drivers/gpu/drm/drm_plane_helper.c             |  4 ++--
>  drivers/gpu/drm/i915/intel_display.c           | 10 ++++++----
>  drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c       |  6 ++++--
>  drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c       |  6 ++++--
>  drivers/gpu/drm/rcar-du/rcar_du_crtc.c         |  6 ++++--
>  drivers/gpu/drm/sti/sti_drm_crtc.c             |  6 ++++--
>  drivers/gpu/drm/tegra/dc.c                     |  6 ++++--
>  include/drm/drm_crtc_helper.h                  |  6 ++++--
>  10 files changed, 40 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> index f69b92535505..8b8fe3762ca9 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> @@ -239,7 +239,8 @@ static int atmel_hlcdc_crtc_atomic_check(struct 
> drm_crtc *c,
>  	return atmel_hlcdc_plane_prepare_disc_area(s);
>  }
>  
> -static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c)
> +static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c,
> +					  struct drm_crtc_state 
> *old_s)
>  {
>  	struct atmel_hlcdc_crtc *crtc = 
> drm_crtc_to_atmel_hlcdc_crtc(c);
>  
> @@ -253,7 +254,8 @@ static void atmel_hlcdc_crtc_atomic_begin(struct 
> drm_crtc *c)
>  	}
>  }
>  
> -static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc)
> +static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc,
> +					  struct drm_crtc_state 
> *old_s)
>  {
>  	/* TODO: write common plane control register if available */
>  }
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c 
> b/drivers/gpu/drm/drm_atomic_helper.c
> index ac6601071414..4a48d76c4fb1 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -1170,7 +1170,7 @@ 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) {
> @@ -1200,7 +1200,7 @@ 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);
> @@ -1236,7 +1236,7 @@ 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 =
> @@ -1259,7 +1259,7 @@ 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);
>  
> diff --git a/drivers/gpu/drm/drm_plane_helper.c 
> b/drivers/gpu/drm/drm_plane_helper.c
> index 03b7afe455e6..cb5dab4c4337 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -436,7 +436,7 @@ int drm_plane_helper_commit(struct drm_plane 
> *plane,
>  
>  	for (i = 0; i < 2; i++) {
>  		if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin)
> -			crtc_funcs[i]->atomic_begin(crtc[i]);
> +			crtc_funcs[i]->atomic_begin(crtc[i], crtc[i]
> ->state);
>  	}
>  
>  	/*
> @@ -451,7 +451,7 @@ int drm_plane_helper_commit(struct drm_plane 
> *plane,
>  
>  	for (i = 0; i < 2; i++) {
>  		if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush)
> -			crtc_funcs[i]->atomic_flush(crtc[i]);
> +			crtc_funcs[i]->atomic_flush(crtc[i], crtc[i]
> ->state);
>  	}
>  
>  	/*
> diff --git a/drivers/gpu/drm/i915/intel_display.c 
> b/drivers/gpu/drm/i915/intel_display.c
> index 671ca2820f82..def9444eeae2 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -102,8 +102,8 @@ static void vlv_prepare_pll(struct intel_crtc 
> *crtc,
>  			    const struct intel_crtc_state 
> *pipe_config);
>  static void chv_prepare_pll(struct intel_crtc *crtc,
>  			    const struct intel_crtc_state 
> *pipe_config);
> -static void intel_begin_crtc_commit(struct drm_crtc *crtc);
> -static void intel_finish_crtc_commit(struct drm_crtc *crtc);
> +static void intel_begin_crtc_commit(struct drm_crtc *, struct 
> drm_crtc_state *);
> +static void intel_finish_crtc_commit(struct drm_crtc *, struct 
> drm_crtc_state *);
>  static void skl_init_scalers(struct drm_device *dev, struct 
> intel_crtc *intel_crtc,
>  	struct intel_crtc_state *crtc_state);
>  static int i9xx_get_refclk(const struct intel_crtc_state 
> *crtc_state,
> @@ -13440,7 +13440,8 @@ intel_disable_primary_plane(struct drm_plane 
> *plane,
>  	dev_priv->display.update_primary_plane(crtc, NULL, 0, 0);
>  }
>  
> -static void intel_begin_crtc_commit(struct drm_crtc *crtc)
> +static void intel_begin_crtc_commit(struct drm_crtc *crtc,
> +				    struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct drm_device *dev = crtc->dev;
>  	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> @@ -13456,7 +13457,8 @@ static void intel_begin_crtc_commit(struct 
> drm_crtc *crtc)
>  		skl_detach_scalers(intel_crtc);
>  }
>  
> -static void intel_finish_crtc_commit(struct drm_crtc *crtc)
> +static void intel_finish_crtc_commit(struct drm_crtc *crtc,
> +				     struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
>  
> diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c 
> b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
> index c4bb9d9c7667..4dc158ed2e95 100644
> --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
> +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
> @@ -334,13 +334,15 @@ static int mdp4_crtc_atomic_check(struct 
> drm_crtc *crtc,
>  	return 0;
>  }
>  
> -static void mdp4_crtc_atomic_begin(struct drm_crtc *crtc)
> +static void mdp4_crtc_atomic_begin(struct drm_crtc *crtc,
> +				   struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
>  	DBG("%s: begin", mdp4_crtc->name);
>  }
>  
> -static void mdp4_crtc_atomic_flush(struct drm_crtc *crtc)
> +static void mdp4_crtc_atomic_flush(struct drm_crtc *crtc,
> +				   struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
>  	struct drm_device *dev = crtc->dev;
> diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c 
> b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
> index dea3d2e559b1..4c1df4e6e5bc 100644
> --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
> +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
> @@ -388,13 +388,15 @@ static int mdp5_crtc_atomic_check(struct 
> drm_crtc *crtc,
>  	return 0;
>  }
>  
> -static void mdp5_crtc_atomic_begin(struct drm_crtc *crtc)
> +static void mdp5_crtc_atomic_begin(struct drm_crtc *crtc,
> +				   struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
>  	DBG("%s: begin", mdp5_crtc->name);
>  }
>  
> -static void mdp5_crtc_atomic_flush(struct drm_crtc *crtc)
> +static void mdp5_crtc_atomic_flush(struct drm_crtc *crtc,
> +				   struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
>  	struct drm_device *dev = crtc->dev;
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c 
> b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
> index 65d6ba6621ac..48cb19949ca3 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
> @@ -496,7 +496,8 @@ static bool rcar_du_crtc_mode_fixup(struct 
> drm_crtc *crtc,
>  	return true;
>  }
>  
> -static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc)
> +static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc,
> +				      struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct drm_pending_vblank_event *event = crtc->state->event;
>  	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
> @@ -512,7 +513,8 @@ static void rcar_du_crtc_atomic_begin(struct 
> drm_crtc *crtc)
>  	}
>  }
>  
> -static void rcar_du_crtc_atomic_flush(struct drm_crtc *crtc)
> +static void rcar_du_crtc_atomic_flush(struct drm_crtc *crtc,
> +				      struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
>  
> diff --git a/drivers/gpu/drm/sti/sti_drm_crtc.c 
> b/drivers/gpu/drm/sti/sti_drm_crtc.c
> index 6b641c5a2ec7..26e63bf14efe 100644
> --- a/drivers/gpu/drm/sti/sti_drm_crtc.c
> +++ b/drivers/gpu/drm/sti/sti_drm_crtc.c
> @@ -164,7 +164,8 @@ sti_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
>  	sti_drm_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
>  }
>  
> -static void sti_drm_atomic_begin(struct drm_crtc *crtc)
> +static void sti_drm_atomic_begin(struct drm_crtc *crtc,
> +				 struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct sti_mixer *mixer = to_sti_mixer(crtc);
>  
> @@ -178,7 +179,8 @@ static void sti_drm_atomic_begin(struct drm_crtc 
> *crtc)
>  	}
>  }
>  
> -static void sti_drm_atomic_flush(struct drm_crtc *crtc)
> +static void sti_drm_atomic_flush(struct drm_crtc *crtc,
> +				 struct drm_crtc_state 
> *old_crtc_state)
>  {
>  }
>  
> diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
> index d447701173e6..24b38090dfd3 100644
> --- a/drivers/gpu/drm/tegra/dc.c
> +++ b/drivers/gpu/drm/tegra/dc.c
> @@ -1275,7 +1275,8 @@ static int tegra_crtc_atomic_check(struct 
> drm_crtc *crtc,
>  	return 0;
>  }
>  
> -static void tegra_crtc_atomic_begin(struct drm_crtc *crtc)
> +static void tegra_crtc_atomic_begin(struct drm_crtc *crtc,
> +				    struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct tegra_dc *dc = to_tegra_dc(crtc);
>  
> @@ -1289,7 +1290,8 @@ static void tegra_crtc_atomic_begin(struct 
> drm_crtc *crtc)
>  	}
>  }
>  
> -static void tegra_crtc_atomic_flush(struct drm_crtc *crtc)
> +static void tegra_crtc_atomic_flush(struct drm_crtc *crtc,
> +				    struct drm_crtc_state 
> *old_crtc_state)
>  {
>  	struct tegra_dc_state *state = to_dc_state(crtc->state);
>  	struct tegra_dc *dc = to_tegra_dc(crtc);
> diff --git a/include/drm/drm_crtc_helper.h 
> b/include/drm/drm_crtc_helper.h
> index 4562bd12bb4a..800e0d1cf32c 100644
> --- a/include/drm/drm_crtc_helper.h
> +++ b/include/drm/drm_crtc_helper.h
> @@ -108,8 +108,10 @@ struct drm_crtc_helper_funcs {
>  	/* atomic helpers */
>  	int (*atomic_check)(struct drm_crtc *crtc,
>  			    struct drm_crtc_state *state);
> -	void (*atomic_begin)(struct drm_crtc *crtc);
> -	void (*atomic_flush)(struct drm_crtc *crtc);
> +	void (*atomic_begin)(struct drm_crtc *crtc,
> +			     struct drm_crtc_state *old_crtc_state);
> +	void (*atomic_flush)(struct drm_crtc *crtc,
> +			     struct drm_crtc_state *old_crtc_state);
>  };
>  
>  /**
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Re: [PATCH 2/6] drm/atomic: pass old crtc state to atomic_begin/flush.

[Tomi Valkeinen]

[-- Attachment #1.1: Type: text/plain, Size: 1586 bytes --]

Hi,

On 21/07/15 14:28, Maarten Lankhorst wrote:
> In intel it's useful to keep track of some state changes with old
> crtc state vs new state, for example to disable initial planes or
> when a modeset's prevented during fastboot.
> 
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> ---
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c |  6 ++++--
>  drivers/gpu/drm/drm_atomic_helper.c            |  8 ++++----
>  drivers/gpu/drm/drm_plane_helper.c             |  4 ++--
>  drivers/gpu/drm/i915/intel_display.c           | 10 ++++++----
>  drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c       |  6 ++++--
>  drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c       |  6 ++++--
>  drivers/gpu/drm/rcar-du/rcar_du_crtc.c         |  6 ++++--
>  drivers/gpu/drm/sti/sti_drm_crtc.c             |  6 ++++--
>  drivers/gpu/drm/tegra/dc.c                     |  6 ++++--
>  include/drm/drm_crtc_helper.h                  |  6 ++++--
>  10 files changed, 40 insertions(+), 24 deletions(-)

Looks like this broke omapdrm in linux-next:

drivers/gpu/drm/omapdrm/omap_crtc.c:470:2: error: initialization from
incompatible pointer type [-Werror]
drivers/gpu/drm/omapdrm/omap_crtc.c:470:2: error: (near initialization
for ‘omap_crtc_helper_funcs.atomic_begin’) [-Werror]
drivers/gpu/drm/omapdrm/omap_crtc.c:471:2: error: initialization from
incompatible pointer type [-Werror]
drivers/gpu/drm/omapdrm/omap_crtc.c:471:2: error: (near initialization
for ‘omap_crtc_helper_funcs.atomic_flush’) [-Werror]

 Tomi


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[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

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Re: [PATCH 2/6] drm/atomic: pass old crtc state to atomic_begin/flush.

[Maarten Lankhorst]

Hey,

Op 05-08-15 om 08:18 schreef Tomi Valkeinen:
> Hi,
>
> On 21/07/15 14:28, Maarten Lankhorst wrote:
>> In intel it's useful to keep track of some state changes with old
>> crtc state vs new state, for example to disable initial planes or
>> when a modeset's prevented during fastboot.
>>
>> Cc: dri-devel@lists.freedesktop.org
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> ---
>>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c |  6 ++++--
>>  drivers/gpu/drm/drm_atomic_helper.c            |  8 ++++----
>>  drivers/gpu/drm/drm_plane_helper.c             |  4 ++--
>>  drivers/gpu/drm/i915/intel_display.c           | 10 ++++++----
>>  drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c       |  6 ++++--
>>  drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c       |  6 ++++--
>>  drivers/gpu/drm/rcar-du/rcar_du_crtc.c         |  6 ++++--
>>  drivers/gpu/drm/sti/sti_drm_crtc.c             |  6 ++++--
>>  drivers/gpu/drm/tegra/dc.c                     |  6 ++++--
>>  include/drm/drm_crtc_helper.h                  |  6 ++++--
>>  10 files changed, 40 insertions(+), 24 deletions(-)
> Looks like this broke omapdrm in linux-next:
>
> drivers/gpu/drm/omapdrm/omap_crtc.c:470:2: error: initialization from
> incompatible pointer type [-Werror]
> drivers/gpu/drm/omapdrm/omap_crtc.c:470:2: error: (near initialization
> for ‘omap_crtc_helper_funcs.atomic_begin’) [-Werror]
> drivers/gpu/drm/omapdrm/omap_crtc.c:471:2: error: initialization from
> incompatible pointer type [-Werror]
> drivers/gpu/drm/omapdrm/omap_crtc.c:471:2: error: (near initialization
> for ‘omap_crtc_helper_funcs.atomic_flush’) [-Werror]
>
>  Tomi
>
This has been fixed up in topic/drm-misc? Compiles for me cleanly there.
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