Nouveau - May 2019 - [PATCH v4 04/11] drm: Convert connector_helper_funcs->atomic_check to accept drm_atomic_state

From: Sean Paul <seanpaul at chromium.org>

Everyone who implements connector_helper_funcs->atomic_check reaches
into the connector state to get the atomic state. Instead of continuing
this pattern, change the callback signature to just give atomic state
and let the driver determine what it does and does not need from it.

Eventually all atomic functions should do this, but that's just too much
busy work for me.

Changes in v3:
- Added to the set
Changes in v4:
- None

Link to v3:
https://patchwork.freedesktop.org/patch/msgid/20190502194956.218441-5-sean at
poorly.run

Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Ben Skeggs <bskeggs at redhat.com>
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Cc: Kieran Bingham <kieran.bingham+renesas at ideasonboard.com>
Cc: Eric Anholt <eric at anholt.net>
Acked-by: Daniel Vetter <daniel at ffwll.ch>
Signed-off-by: Sean Paul <seanpaul at chromium.org>
---
 drivers/gpu/drm/drm_atomic_helper.c      |  4 ++--
 drivers/gpu/drm/i915/intel_atomic.c      |  8 +++++---
 drivers/gpu/drm/i915/intel_dp_mst.c      |  7 ++++---
 drivers/gpu/drm/i915/intel_drv.h         |  2 +-
 drivers/gpu/drm/i915/intel_sdvo.c        |  9 +++++----
 drivers/gpu/drm/i915/intel_tv.c          |  8 +++++---
 drivers/gpu/drm/nouveau/dispnv50/disp.c  |  5 +++--
 drivers/gpu/drm/rcar-du/rcar_lvds.c      | 12 +++++++-----
 drivers/gpu/drm/vc4/vc4_txp.c            |  7 ++++---
 include/drm/drm_modeset_helper_vtables.h |  2 +-
 10 files changed, 37 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c
b/drivers/gpu/drm/drm_atomic_helper.c
index e8b7187a8494..ee945d6f1cba 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -683,7 +683,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
 		}
 
 		if (funcs->atomic_check)
-			ret = funcs->atomic_check(connector, new_connector_state);
+			ret = funcs->atomic_check(connector, state);
 		if (ret)
 			return ret;
 
@@ -725,7 +725,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
 			continue;
 
 		if (funcs->atomic_check)
-			ret = funcs->atomic_check(connector, new_connector_state);
+			ret = funcs->atomic_check(connector, state);
 		if (ret)
 			return ret;
 	}
diff --git a/drivers/gpu/drm/i915/intel_atomic.c
b/drivers/gpu/drm/i915/intel_atomic.c
index b844e8840c6f..e8a5b82e9242 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -103,12 +103,14 @@ int intel_digital_connector_atomic_set_property(struct
drm_connector *connector,
 }
 
 int intel_digital_connector_atomic_check(struct drm_connector *conn,
-					 struct drm_connector_state *new_state)
+					 struct drm_atomic_state *state)
 {
+	struct drm_connector_state *new_state +	
drm_atomic_get_new_connector_state(state, conn);
 	struct intel_digital_connector_state *new_conn_state  	
to_intel_digital_connector_state(new_state);
 	struct drm_connector_state *old_state -	
drm_atomic_get_old_connector_state(new_state->state, conn);
+		drm_atomic_get_old_connector_state(state, conn);
 	struct intel_digital_connector_state *old_conn_state  	
to_intel_digital_connector_state(old_state);
 	struct drm_crtc_state *crtc_state;
@@ -118,7 +120,7 @@ int intel_digital_connector_atomic_check(struct
drm_connector *conn,
 	if (!new_state->crtc)
 		return 0;
 
-	crtc_state = drm_atomic_get_new_crtc_state(new_state->state,
new_state->crtc);
+	crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
 
 	/*
 	 * These properties are handled by fastset, and might not end
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c
b/drivers/gpu/drm/i915/intel_dp_mst.c
index 19d81cef2ab6..89cfec128ba0 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -143,9 +143,10 @@ static int intel_dp_mst_compute_config(struct intel_encoder
*encoder,
 
 static int
 intel_dp_mst_atomic_check(struct drm_connector *connector,
-			  struct drm_connector_state *new_conn_state)
+			  struct drm_atomic_state *state)
 {
-	struct drm_atomic_state *state = new_conn_state->state;
+	struct drm_connector_state *new_conn_state +	
drm_atomic_get_new_connector_state(state, connector);
 	struct drm_connector_state *old_conn_state  	
drm_atomic_get_old_connector_state(state, connector);
 	struct intel_connector *intel_connector @@ -155,7 +156,7 @@
intel_dp_mst_atomic_check(struct drm_connector *connector,
 	struct drm_dp_mst_topology_mgr *mgr;
 	int ret;
 
-	ret = intel_digital_connector_atomic_check(connector, new_conn_state);
+	ret = intel_digital_connector_atomic_check(connector, state);
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f8c7b291fdc3..88571b8e8d62 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -2481,7 +2481,7 @@ int intel_digital_connector_atomic_set_property(struct
drm_connector *connector,
 						struct drm_property *property,
 						u64 val);
 int intel_digital_connector_atomic_check(struct drm_connector *conn,
-					 struct drm_connector_state *new_state);
+					 struct drm_atomic_state *state);
 struct drm_connector_state *
 intel_digital_connector_duplicate_state(struct drm_connector *connector);
 
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c
b/drivers/gpu/drm/i915/intel_sdvo.c
index 68f497493d43..72ea164b971c 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2342,9 +2342,10 @@ static const struct drm_connector_funcs
intel_sdvo_connector_funcs = {
 };
 
 static int intel_sdvo_atomic_check(struct drm_connector *conn,
-				   struct drm_connector_state *new_conn_state)
+				   struct drm_atomic_state *state)
 {
-	struct drm_atomic_state *state = new_conn_state->state;
+	struct drm_connector_state *new_conn_state +	
drm_atomic_get_new_connector_state(state, conn);
 	struct drm_connector_state *old_conn_state  	
drm_atomic_get_old_connector_state(state, conn);
 	struct intel_sdvo_connector_state *old_state @@ -2356,13 +2357,13 @@ static
int intel_sdvo_atomic_check(struct drm_connector *conn,
 	    (memcmp(&old_state->tv, &new_state->tv,
sizeof(old_state->tv)) ||
 	     memcmp(&old_conn_state->tv, &new_conn_state->tv,
sizeof(old_conn_state->tv)))) {
 		struct drm_crtc_state *crtc_state -		
drm_atomic_get_new_crtc_state(new_conn_state->state,
+			drm_atomic_get_new_crtc_state(state,
 						      new_conn_state->crtc);
 
 		crtc_state->connectors_changed = true;
 	}
 
-	return intel_digital_connector_atomic_check(conn, new_conn_state);
+	return intel_digital_connector_atomic_check(conn, state);
 }
 
 static const struct drm_connector_helper_funcs
intel_sdvo_connector_helper_funcs = {
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 3924c4944e1f..a41c5b467c14 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1817,16 +1817,18 @@ static const struct drm_connector_funcs
intel_tv_connector_funcs = {
 };
 
 static int intel_tv_atomic_check(struct drm_connector *connector,
-				 struct drm_connector_state *new_state)
+				 struct drm_atomic_state *state)
 {
+	struct drm_connector_state *new_state;
 	struct drm_crtc_state *new_crtc_state;
 	struct drm_connector_state *old_state;
 
+	new_state = drm_atomic_get_new_connector_state(state, connector);
 	if (!new_state->crtc)
 		return 0;
 
-	old_state = drm_atomic_get_old_connector_state(new_state->state,
connector);
-	new_crtc_state = drm_atomic_get_new_crtc_state(new_state->state,
new_state->crtc);
+	old_state = drm_atomic_get_old_connector_state(state, connector);
+	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
 
 	if (old_state->tv.mode != new_state->tv.mode ||
 	    old_state->tv.margins.left != new_state->tv.margins.left ||
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c
b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 4b1650f51955..7ba373f493b2 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -948,11 +948,12 @@ nv50_mstc_get_modes(struct drm_connector *connector)
 
 static int
 nv50_mstc_atomic_check(struct drm_connector *connector,
-		       struct drm_connector_state *new_conn_state)
+		       struct drm_atomic_state *state)
 {
-	struct drm_atomic_state *state = new_conn_state->state;
 	struct nv50_mstc *mstc = nv50_mstc(connector);
 	struct drm_dp_mst_topology_mgr *mgr = &mstc->mstm->mgr;
+	struct drm_connector_state *new_conn_state +	
drm_atomic_get_new_connector_state(state, connector);
 	struct drm_connector_state *old_conn_state  	
drm_atomic_get_old_connector_state(state, connector);
 	struct drm_crtc_state *crtc_state;
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c
b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index 620b51aab291..5b81ba2a7f27 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -92,13 +92,15 @@ static int rcar_lvds_connector_get_modes(struct
drm_connector *connector)
 }
 
 static int rcar_lvds_connector_atomic_check(struct drm_connector *connector,
-					    struct drm_connector_state *state)
+					    struct drm_atomic_state *state)
 {
 	struct rcar_lvds *lvds = connector_to_rcar_lvds(connector);
 	const struct drm_display_mode *panel_mode;
+	struct drm_connector_state *conn_state;
 	struct drm_crtc_state *crtc_state;
 
-	if (!state->crtc)
+	conn_state = drm_atomic_get_new_connector_state(state, connector);
+	if (!conn_state->crtc)
 		return 0;
 
 	if (list_empty(&connector->modes)) {
@@ -110,9 +112,9 @@ static int rcar_lvds_connector_atomic_check(struct
drm_connector *connector,
 				      struct drm_display_mode, head);
 
 	/* We're not allowed to modify the resolution. */
-	crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
-	if (IS_ERR(crtc_state))
-		return PTR_ERR(crtc_state);
+	crtc_state = drm_atomic_get_crtc_state(state, conn_state->crtc);
+	if (!crtc_state)
+		return -EINVAL;
 
 	if (crtc_state->mode.hdisplay != panel_mode->hdisplay ||
 	    crtc_state->mode.vdisplay != panel_mode->vdisplay)
diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c
index c8b89a78f9f4..96f91c1b4b6e 100644
--- a/drivers/gpu/drm/vc4/vc4_txp.c
+++ b/drivers/gpu/drm/vc4/vc4_txp.c
@@ -221,17 +221,18 @@ static const u32 txp_fmts[] = {
 };
 
 static int vc4_txp_connector_atomic_check(struct drm_connector *conn,
-					struct drm_connector_state *conn_state)
+					  struct drm_atomic_state *state)
 {
+	struct drm_connector_state *conn_state;
 	struct drm_crtc_state *crtc_state;
 	struct drm_framebuffer *fb;
 	int i;
 
+	conn_state = drm_atomic_get_new_connector_state(state, conn);
 	if (!conn_state->writeback_job || !conn_state->writeback_job->fb)
 		return 0;
 
-	crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
-						   conn_state->crtc);
+	crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
 
 	fb = conn_state->writeback_job->fb;
 	if (fb->width != crtc_state->mode.hdisplay ||
diff --git a/include/drm/drm_modeset_helper_vtables.h
b/include/drm/drm_modeset_helper_vtables.h
index aa509c107083..2cdf58da4c90 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1023,7 +1023,7 @@ struct drm_connector_helper_funcs {
 	 * deadlock.
 	 */
 	int (*atomic_check)(struct drm_connector *connector,
-			    struct drm_connector_state *state);
+			    struct drm_atomic_state *state);
 
 	/**
 	 * @atomic_commit:
-- 
Sean Paul, Software Engineer, Google / Chromium OS