[PATCH v2 0/3] drm/msm: remove DRM mode setting object arrays

[PATCH v2 0/3] drm/msm: remove DRM mode setting object arrays

[Dmitry Baryshkov]

MSM DRM driver stores connectors, encoders and planes in the arrays
inside struct msm_drm_private. They are not really necessary, as
drm_devices also references lists of these objects. Drop private arrays
and use drm_mode_foo() macros.

Note, the crtc array is kept intact as it is used in vblank handling
code. Maybe it can be dropped later, but it would be a separate
intrusive change.

Changes since v1:
- Also drop MAX_PLANES/MAX_ENCODERS/MAX_CONNECTORS defines (as suggested
  by Stephen)

Dmitry Baryshkov (3):
  drm/msm/dpu: remove manual destruction of DRM objects
  drm/msm: loop over encoders using drm_for_each_encoder()
  drm/msm: don't store created planes, connectors and encoders

 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  | 51 ++++++------------------
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c |  7 ----
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 17 ++++----
 drivers/gpu/drm/msm/dp/dp_display.c      |  2 -
 drivers/gpu/drm/msm/dsi/dsi.c            |  1 -
 drivers/gpu/drm/msm/hdmi/hdmi.c          |  1 -
 drivers/gpu/drm/msm/msm_drv.h            | 12 ------
 7 files changed, 21 insertions(+), 70 deletions(-)

-- 
2.35.1

[PATCH v2 0/3] drm/msm: remove DRM mode setting object arrays

[Dmitry Baryshkov]

MSM DRM driver stores connectors, encoders and planes in the arrays
inside struct msm_drm_private. They are not really necessary, as
drm_devices also references lists of these objects. Drop private arrays
and use drm_mode_foo() macros.

Note, the crtc array is kept intact as it is used in vblank handling
code. Maybe it can be dropped later, but it would be a separate
intrusive change.

Changes since v1:
- Also drop MAX_PLANES/MAX_ENCODERS/MAX_CONNECTORS defines (as suggested
  by Stephen)

Dmitry Baryshkov (3):
  drm/msm/dpu: remove manual destruction of DRM objects
  drm/msm: loop over encoders using drm_for_each_encoder()
  drm/msm: don't store created planes, connectors and encoders

 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  | 51 ++++++------------------
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c |  7 ----
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 17 ++++----
 drivers/gpu/drm/msm/dp/dp_display.c      |  2 -
 drivers/gpu/drm/msm/dsi/dsi.c            |  1 -
 drivers/gpu/drm/msm/hdmi/hdmi.c          |  1 -
 drivers/gpu/drm/msm/msm_drv.h            | 12 ------
 7 files changed, 21 insertions(+), 70 deletions(-)

-- 
2.35.1

[PATCH v2 1/3] drm/msm/dpu: remove manual destruction of DRM objects

[Dmitry Baryshkov]

Remove manual removal of DRM modesetting objects, it is done anyway by
the drm_mode_config_cleanup() called from msm_drm_uninit(). Other
MSM display drivers (MDP4, MDP5) do not manually destroy objects and
trust generic code to do it's work.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 33 +++----------------------
 1 file changed, 3 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index e29796c4f27b..d0525a9ea92b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -675,30 +675,6 @@ static int _dpu_kms_setup_displays(struct drm_device *dev,
 	return rc;
 }
 
-static void _dpu_kms_drm_obj_destroy(struct dpu_kms *dpu_kms)
-{
-	struct msm_drm_private *priv;
-	int i;
-
-	priv = dpu_kms->dev->dev_private;
-
-	for (i = 0; i < priv->num_crtcs; i++)
-		priv->crtcs[i]->funcs->destroy(priv->crtcs[i]);
-	priv->num_crtcs = 0;
-
-	for (i = 0; i < priv->num_planes; i++)
-		priv->planes[i]->funcs->destroy(priv->planes[i]);
-	priv->num_planes = 0;
-
-	for (i = 0; i < priv->num_connectors; i++)
-		priv->connectors[i]->funcs->destroy(priv->connectors[i]);
-	priv->num_connectors = 0;
-
-	for (i = 0; i < priv->num_encoders; i++)
-		priv->encoders[i]->funcs->destroy(priv->encoders[i]);
-	priv->num_encoders = 0;
-}
-
 static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 {
 	struct drm_device *dev;
@@ -721,7 +697,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	 */
 	ret = _dpu_kms_setup_displays(dev, priv, dpu_kms);
 	if (ret)
-		goto fail;
+		return ret;
 
 	max_crtc_count = min(catalog->mixer_count, priv->num_encoders);
 
@@ -746,7 +722,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		if (IS_ERR(plane)) {
 			DPU_ERROR("dpu_plane_init failed\n");
 			ret = PTR_ERR(plane);
-			goto fail;
+			return ret;
 		}
 		priv->planes[priv->num_planes++] = plane;
 
@@ -763,7 +739,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		crtc = dpu_crtc_init(dev, primary_planes[i], cursor_planes[i]);
 		if (IS_ERR(crtc)) {
 			ret = PTR_ERR(crtc);
-			goto fail;
+			return ret;
 		}
 		priv->crtcs[priv->num_crtcs++] = crtc;
 	}
@@ -773,9 +749,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		priv->encoders[i]->possible_crtcs = (1 << priv->num_crtcs) - 1;
 
 	return 0;
-fail:
-	_dpu_kms_drm_obj_destroy(dpu_kms);
-	return ret;
 }
 
 static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
-- 
2.35.1

[PATCH v2 1/3] drm/msm/dpu: remove manual destruction of DRM objects

[Dmitry Baryshkov]

Remove manual removal of DRM modesetting objects, it is done anyway by
the drm_mode_config_cleanup() called from msm_drm_uninit(). Other
MSM display drivers (MDP4, MDP5) do not manually destroy objects and
trust generic code to do it's work.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 33 +++----------------------
 1 file changed, 3 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index e29796c4f27b..d0525a9ea92b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -675,30 +675,6 @@ static int _dpu_kms_setup_displays(struct drm_device *dev,
 	return rc;
 }
 
-static void _dpu_kms_drm_obj_destroy(struct dpu_kms *dpu_kms)
-{
-	struct msm_drm_private *priv;
-	int i;
-
-	priv = dpu_kms->dev->dev_private;
-
-	for (i = 0; i < priv->num_crtcs; i++)
-		priv->crtcs[i]->funcs->destroy(priv->crtcs[i]);
-	priv->num_crtcs = 0;
-
-	for (i = 0; i < priv->num_planes; i++)
-		priv->planes[i]->funcs->destroy(priv->planes[i]);
-	priv->num_planes = 0;
-
-	for (i = 0; i < priv->num_connectors; i++)
-		priv->connectors[i]->funcs->destroy(priv->connectors[i]);
-	priv->num_connectors = 0;
-
-	for (i = 0; i < priv->num_encoders; i++)
-		priv->encoders[i]->funcs->destroy(priv->encoders[i]);
-	priv->num_encoders = 0;
-}
-
 static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 {
 	struct drm_device *dev;
@@ -721,7 +697,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	 */
 	ret = _dpu_kms_setup_displays(dev, priv, dpu_kms);
 	if (ret)
-		goto fail;
+		return ret;
 
 	max_crtc_count = min(catalog->mixer_count, priv->num_encoders);
 
@@ -746,7 +722,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		if (IS_ERR(plane)) {
 			DPU_ERROR("dpu_plane_init failed\n");
 			ret = PTR_ERR(plane);
-			goto fail;
+			return ret;
 		}
 		priv->planes[priv->num_planes++] = plane;
 
@@ -763,7 +739,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		crtc = dpu_crtc_init(dev, primary_planes[i], cursor_planes[i]);
 		if (IS_ERR(crtc)) {
 			ret = PTR_ERR(crtc);
-			goto fail;
+			return ret;
 		}
 		priv->crtcs[priv->num_crtcs++] = crtc;
 	}
@@ -773,9 +749,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		priv->encoders[i]->possible_crtcs = (1 << priv->num_crtcs) - 1;
 
 	return 0;
-fail:
-	_dpu_kms_drm_obj_destroy(dpu_kms);
-	return ret;
 }
 
 static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
-- 
2.35.1

[PATCH v2 2/3] drm/msm: loop over encoders using drm_for_each_encoder()

[Dmitry Baryshkov]

Rather than manually looping over encoders array, use standard
drm_for_each_encoder() macro.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  | 5 +++--
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 6 ++----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index d0525a9ea92b..0bc33243dae8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -681,6 +681,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	struct drm_plane *primary_planes[MAX_PLANES], *plane;
 	struct drm_plane *cursor_planes[MAX_PLANES] = { NULL };
 	struct drm_crtc *crtc;
+	struct drm_encoder *encoder;
 
 	struct msm_drm_private *priv;
 	struct dpu_mdss_cfg *catalog;
@@ -745,8 +746,8 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	}
 
 	/* All CRTCs are compatible with all encoders */
-	for (i = 0; i < priv->num_encoders; i++)
-		priv->encoders[i]->possible_crtcs = (1 << priv->num_crtcs) - 1;
+	drm_for_each_encoder(encoder, dev)
+		encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index 3b92372e7bdf..2ba06f979f72 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -434,6 +434,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 	int i, ret, pi = 0, ci = 0;
 	struct drm_plane *primary[MAX_BASES] = { NULL };
 	struct drm_plane *cursor[MAX_BASES] = { NULL };
+	struct drm_encoder *encoder;
 
 	/*
 	 * Construct encoders and modeset initialize connector devices
@@ -499,11 +500,8 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 	 * Now that we know the number of crtcs we've created, set the possible
 	 * crtcs for the encoders
 	 */
-	for (i = 0; i < priv->num_encoders; i++) {
-		struct drm_encoder *encoder = priv->encoders[i];
-
+	drm_for_each_encoder(encoder, dev)
 		encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
-	}
 
 	return 0;
 
-- 
2.35.1

[PATCH v2 2/3] drm/msm: loop over encoders using drm_for_each_encoder()

[Dmitry Baryshkov]

Rather than manually looping over encoders array, use standard
drm_for_each_encoder() macro.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  | 5 +++--
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 6 ++----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index d0525a9ea92b..0bc33243dae8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -681,6 +681,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	struct drm_plane *primary_planes[MAX_PLANES], *plane;
 	struct drm_plane *cursor_planes[MAX_PLANES] = { NULL };
 	struct drm_crtc *crtc;
+	struct drm_encoder *encoder;
 
 	struct msm_drm_private *priv;
 	struct dpu_mdss_cfg *catalog;
@@ -745,8 +746,8 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	}
 
 	/* All CRTCs are compatible with all encoders */
-	for (i = 0; i < priv->num_encoders; i++)
-		priv->encoders[i]->possible_crtcs = (1 << priv->num_crtcs) - 1;
+	drm_for_each_encoder(encoder, dev)
+		encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index 3b92372e7bdf..2ba06f979f72 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -434,6 +434,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 	int i, ret, pi = 0, ci = 0;
 	struct drm_plane *primary[MAX_BASES] = { NULL };
 	struct drm_plane *cursor[MAX_BASES] = { NULL };
+	struct drm_encoder *encoder;
 
 	/*
 	 * Construct encoders and modeset initialize connector devices
@@ -499,11 +500,8 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 	 * Now that we know the number of crtcs we've created, set the possible
 	 * crtcs for the encoders
 	 */
-	for (i = 0; i < priv->num_encoders; i++) {
-		struct drm_encoder *encoder = priv->encoders[i];
-
+	drm_for_each_encoder(encoder, dev)
 		encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
-	}
 
 	return 0;
 
-- 
2.35.1

[PATCH v2 3/3] drm/msm: don't store created planes, connectors and encoders

[Dmitry Baryshkov]

There is no point now in storing arrays of creates planes, connectors
and encoders. Remove them from struct msm_drm_private.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  | 13 +++++++------
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c |  7 -------
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 11 ++++++-----
 drivers/gpu/drm/msm/dp/dp_display.c      |  2 --
 drivers/gpu/drm/msm/dsi/dsi.c            |  1 -
 drivers/gpu/drm/msm/hdmi/hdmi.c          |  1 -
 drivers/gpu/drm/msm/msm_drv.h            | 12 ------------
 7 files changed, 13 insertions(+), 34 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 0bc33243dae8..ecdc7cdae71d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -565,8 +565,6 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 			return PTR_ERR(encoder);
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-
 		memset(&info, 0, sizeof(info));
 		info.intf_type = encoder->encoder_type;
 
@@ -629,8 +627,6 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev,
 			return rc;
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-
 		info.num_of_h_tiles = 1;
 		info.h_tile_instance[0] = i;
 		info.capabilities = MSM_DISPLAY_CAP_VID_MODE;
@@ -675,6 +671,7 @@ static int _dpu_kms_setup_displays(struct drm_device *dev,
 	return rc;
 }
 
+#define MAX_PLANES 20
 static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 {
 	struct drm_device *dev;
@@ -682,6 +679,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	struct drm_plane *cursor_planes[MAX_PLANES] = { NULL };
 	struct drm_crtc *crtc;
 	struct drm_encoder *encoder;
+	unsigned int num_encoders;
 
 	struct msm_drm_private *priv;
 	struct dpu_mdss_cfg *catalog;
@@ -700,7 +698,11 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	if (ret)
 		return ret;
 
-	max_crtc_count = min(catalog->mixer_count, priv->num_encoders);
+	num_encoders = 0;
+	drm_for_each_encoder(encoder, dev)
+		num_encoders++;
+
+	max_crtc_count = min(catalog->mixer_count, num_encoders);
 
 	/* Create the planes, keeping track of one primary/cursor per crtc */
 	for (i = 0; i < catalog->sspp_count; i++) {
@@ -725,7 +727,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 			ret = PTR_ERR(plane);
 			return ret;
 		}
-		priv->planes[priv->num_planes++] = plane;
 
 		if (type == DRM_PLANE_TYPE_CURSOR)
 			cursor_planes[cursor_planes_idx++] = plane;
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
index 3cf476c55158..1862eba51bbb 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
@@ -229,9 +229,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 			return PTR_ERR(connector);
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-		priv->connectors[priv->num_connectors++] = connector;
-
 		break;
 	case DRM_MODE_ENCODER_TMDS:
 		encoder = mdp4_dtv_encoder_init(dev);
@@ -252,8 +249,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 			}
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-
 		break;
 	case DRM_MODE_ENCODER_DSI:
 		/* only DSI1 supported for now */
@@ -272,7 +267,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 
 		/* TODO: Add DMA_S later? */
 		encoder->possible_crtcs = 1 << DMA_P;
-		priv->encoders[priv->num_encoders++] = encoder;
 
 		ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, encoder);
 		if (ret) {
@@ -324,7 +318,6 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
 			ret = PTR_ERR(plane);
 			goto fail;
 		}
-		priv->planes[priv->num_planes++] = plane;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(mdp4_crtcs); i++) {
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index 2ba06f979f72..dbfe54de975c 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -319,7 +319,6 @@ static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms,
 					     struct mdp5_ctl *ctl)
 {
 	struct drm_device *dev = mdp5_kms->dev;
-	struct msm_drm_private *priv = dev->dev_private;
 	struct drm_encoder *encoder;
 
 	encoder = mdp5_encoder_init(dev, intf, ctl);
@@ -328,8 +327,6 @@ static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms,
 		return encoder;
 	}
 
-	priv->encoders[priv->num_encoders++] = encoder;
-
 	return encoder;
 }
 
@@ -435,6 +432,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 	struct drm_plane *primary[MAX_BASES] = { NULL };
 	struct drm_plane *cursor[MAX_BASES] = { NULL };
 	struct drm_encoder *encoder;
+	unsigned int num_encoders;
 
 	/*
 	 * Construct encoders and modeset initialize connector devices
@@ -446,12 +444,16 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 			goto fail;
 	}
 
+	num_encoders = 0;
+	drm_for_each_encoder(encoder, dev)
+		num_encoders++;
+
 	/*
 	 * We should ideally have less number of encoders (set up by parsing
 	 * the MDP5 interfaces) than the number of layer mixers present in HW,
 	 * but let's be safe here anyway
 	 */
-	num_crtcs = min(priv->num_encoders, mdp5_kms->num_hwmixers);
+	num_crtcs = min(num_encoders, mdp5_kms->num_hwmixers);
 
 	/*
 	 * Construct planes equaling the number of hw pipes, and CRTCs for the
@@ -476,7 +478,6 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 			DRM_DEV_ERROR(dev->dev, "failed to construct plane %d (%d)\n", i, ret);
 			goto fail;
 		}
-		priv->planes[priv->num_planes++] = plane;
 
 		if (type == DRM_PLANE_TYPE_PRIMARY)
 			primary[pi++] = plane;
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 178b774a5fbd..ad7a18a0dece 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1541,8 +1541,6 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 
 	dp_priv->panel->connector = dp_display->connector;
 
-	priv->connectors[priv->num_connectors++] = dp_display->connector;
-
 	dp_display->bridge = msm_dp_bridge_init(dp_display, dev, encoder);
 	if (IS_ERR(dp_display->bridge)) {
 		ret = PTR_ERR(dp_display->bridge);
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index c12e66aa42a3..1fe020ee1018 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -273,7 +273,6 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
 	}
 
 	priv->bridges[priv->num_bridges++]       = msm_dsi->bridge;
-	priv->connectors[priv->num_connectors++] = msm_dsi->connector;
 
 	return 0;
 fail:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index ec324352e862..baa6f1aaadf6 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -322,7 +322,6 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 	}
 
 	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
-	priv->connectors[priv->num_connectors++] = hdmi->connector;
 
 	platform_set_drvdata(pdev, hdmi);
 
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d661debb50f1..7d4373ba6218 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -46,10 +46,7 @@ struct msm_gem_vma;
 struct msm_disp_state;
 
 #define MAX_CRTCS      8
-#define MAX_PLANES     20
-#define MAX_ENCODERS   8
 #define MAX_BRIDGES    8
-#define MAX_CONNECTORS 8
 
 #define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
 
@@ -184,23 +181,14 @@ struct msm_drm_private {
 
 	struct workqueue_struct *wq;
 
-	unsigned int num_planes;
-	struct drm_plane *planes[MAX_PLANES];
-
 	unsigned int num_crtcs;
 	struct drm_crtc *crtcs[MAX_CRTCS];
 
 	struct msm_drm_thread event_thread[MAX_CRTCS];
 
-	unsigned int num_encoders;
-	struct drm_encoder *encoders[MAX_ENCODERS];
-
 	unsigned int num_bridges;
 	struct drm_bridge *bridges[MAX_BRIDGES];
 
-	unsigned int num_connectors;
-	struct drm_connector *connectors[MAX_CONNECTORS];
-
 	/* Properties */
 	struct drm_property *plane_property[PLANE_PROP_MAX_NUM];
 
-- 
2.35.1

[PATCH v2 3/3] drm/msm: don't store created planes, connectors and encoders

[Dmitry Baryshkov]

There is no point now in storing arrays of creates planes, connectors
and encoders. Remove them from struct msm_drm_private.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  | 13 +++++++------
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c |  7 -------
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 11 ++++++-----
 drivers/gpu/drm/msm/dp/dp_display.c      |  2 --
 drivers/gpu/drm/msm/dsi/dsi.c            |  1 -
 drivers/gpu/drm/msm/hdmi/hdmi.c          |  1 -
 drivers/gpu/drm/msm/msm_drv.h            | 12 ------------
 7 files changed, 13 insertions(+), 34 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 0bc33243dae8..ecdc7cdae71d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -565,8 +565,6 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 			return PTR_ERR(encoder);
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-
 		memset(&info, 0, sizeof(info));
 		info.intf_type = encoder->encoder_type;
 
@@ -629,8 +627,6 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev,
 			return rc;
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-
 		info.num_of_h_tiles = 1;
 		info.h_tile_instance[0] = i;
 		info.capabilities = MSM_DISPLAY_CAP_VID_MODE;
@@ -675,6 +671,7 @@ static int _dpu_kms_setup_displays(struct drm_device *dev,
 	return rc;
 }
 
+#define MAX_PLANES 20
 static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 {
 	struct drm_device *dev;
@@ -682,6 +679,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	struct drm_plane *cursor_planes[MAX_PLANES] = { NULL };
 	struct drm_crtc *crtc;
 	struct drm_encoder *encoder;
+	unsigned int num_encoders;
 
 	struct msm_drm_private *priv;
 	struct dpu_mdss_cfg *catalog;
@@ -700,7 +698,11 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	if (ret)
 		return ret;
 
-	max_crtc_count = min(catalog->mixer_count, priv->num_encoders);
+	num_encoders = 0;
+	drm_for_each_encoder(encoder, dev)
+		num_encoders++;
+
+	max_crtc_count = min(catalog->mixer_count, num_encoders);
 
 	/* Create the planes, keeping track of one primary/cursor per crtc */
 	for (i = 0; i < catalog->sspp_count; i++) {
@@ -725,7 +727,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 			ret = PTR_ERR(plane);
 			return ret;
 		}
-		priv->planes[priv->num_planes++] = plane;
 
 		if (type == DRM_PLANE_TYPE_CURSOR)
 			cursor_planes[cursor_planes_idx++] = plane;
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
index 3cf476c55158..1862eba51bbb 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
@@ -229,9 +229,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 			return PTR_ERR(connector);
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-		priv->connectors[priv->num_connectors++] = connector;
-
 		break;
 	case DRM_MODE_ENCODER_TMDS:
 		encoder = mdp4_dtv_encoder_init(dev);
@@ -252,8 +249,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 			}
 		}
 
-		priv->encoders[priv->num_encoders++] = encoder;
-
 		break;
 	case DRM_MODE_ENCODER_DSI:
 		/* only DSI1 supported for now */
@@ -272,7 +267,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 
 		/* TODO: Add DMA_S later? */
 		encoder->possible_crtcs = 1 << DMA_P;
-		priv->encoders[priv->num_encoders++] = encoder;
 
 		ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, encoder);
 		if (ret) {
@@ -324,7 +318,6 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
 			ret = PTR_ERR(plane);
 			goto fail;
 		}
-		priv->planes[priv->num_planes++] = plane;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(mdp4_crtcs); i++) {
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index 2ba06f979f72..dbfe54de975c 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -319,7 +319,6 @@ static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms,
 					     struct mdp5_ctl *ctl)
 {
 	struct drm_device *dev = mdp5_kms->dev;
-	struct msm_drm_private *priv = dev->dev_private;
 	struct drm_encoder *encoder;
 
 	encoder = mdp5_encoder_init(dev, intf, ctl);
@@ -328,8 +327,6 @@ static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms,
 		return encoder;
 	}
 
-	priv->encoders[priv->num_encoders++] = encoder;
-
 	return encoder;
 }
 
@@ -435,6 +432,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 	struct drm_plane *primary[MAX_BASES] = { NULL };
 	struct drm_plane *cursor[MAX_BASES] = { NULL };
 	struct drm_encoder *encoder;
+	unsigned int num_encoders;
 
 	/*
 	 * Construct encoders and modeset initialize connector devices
@@ -446,12 +444,16 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 			goto fail;
 	}
 
+	num_encoders = 0;
+	drm_for_each_encoder(encoder, dev)
+		num_encoders++;
+
 	/*
 	 * We should ideally have less number of encoders (set up by parsing
 	 * the MDP5 interfaces) than the number of layer mixers present in HW,
 	 * but let's be safe here anyway
 	 */
-	num_crtcs = min(priv->num_encoders, mdp5_kms->num_hwmixers);
+	num_crtcs = min(num_encoders, mdp5_kms->num_hwmixers);
 
 	/*
 	 * Construct planes equaling the number of hw pipes, and CRTCs for the
@@ -476,7 +478,6 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 			DRM_DEV_ERROR(dev->dev, "failed to construct plane %d (%d)\n", i, ret);
 			goto fail;
 		}
-		priv->planes[priv->num_planes++] = plane;
 
 		if (type == DRM_PLANE_TYPE_PRIMARY)
 			primary[pi++] = plane;
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 178b774a5fbd..ad7a18a0dece 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1541,8 +1541,6 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 
 	dp_priv->panel->connector = dp_display->connector;
 
-	priv->connectors[priv->num_connectors++] = dp_display->connector;
-
 	dp_display->bridge = msm_dp_bridge_init(dp_display, dev, encoder);
 	if (IS_ERR(dp_display->bridge)) {
 		ret = PTR_ERR(dp_display->bridge);
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index c12e66aa42a3..1fe020ee1018 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -273,7 +273,6 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
 	}
 
 	priv->bridges[priv->num_bridges++]       = msm_dsi->bridge;
-	priv->connectors[priv->num_connectors++] = msm_dsi->connector;
 
 	return 0;
 fail:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index ec324352e862..baa6f1aaadf6 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -322,7 +322,6 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 	}
 
 	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
-	priv->connectors[priv->num_connectors++] = hdmi->connector;
 
 	platform_set_drvdata(pdev, hdmi);
 
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d661debb50f1..7d4373ba6218 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -46,10 +46,7 @@ struct msm_gem_vma;
 struct msm_disp_state;
 
 #define MAX_CRTCS      8
-#define MAX_PLANES     20
-#define MAX_ENCODERS   8
 #define MAX_BRIDGES    8
-#define MAX_CONNECTORS 8
 
 #define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
 
@@ -184,23 +181,14 @@ struct msm_drm_private {
 
 	struct workqueue_struct *wq;
 
-	unsigned int num_planes;
-	struct drm_plane *planes[MAX_PLANES];
-
 	unsigned int num_crtcs;
 	struct drm_crtc *crtcs[MAX_CRTCS];
 
 	struct msm_drm_thread event_thread[MAX_CRTCS];
 
-	unsigned int num_encoders;
-	struct drm_encoder *encoders[MAX_ENCODERS];
-
 	unsigned int num_bridges;
 	struct drm_bridge *bridges[MAX_BRIDGES];
 
-	unsigned int num_connectors;
-	struct drm_connector *connectors[MAX_CONNECTORS];
-
 	/* Properties */
 	struct drm_property *plane_property[PLANE_PROP_MAX_NUM];
 
-- 
2.35.1

Re: [PATCH v2 3/3] drm/msm: don't store created planes, connectors and encoders

[Stephen Boyd]

Quoting Dmitry Baryshkov (2022-04-06 03:12:47)
> There is no point now in storing arrays of creates planes, connectors
> and encoders. Remove them from struct msm_drm_private.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>

Re: [PATCH v2 3/3] drm/msm: don't store created planes, connectors and encoders

[Stephen Boyd]

Quoting Dmitry Baryshkov (2022-04-06 03:12:47)
> There is no point now in storing arrays of creates planes, connectors
> and encoders. Remove them from struct msm_drm_private.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>