bcm27xx: update patches from RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 125 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0549-drm-vc4-plane-Move-planes-creation-to-its-own-functi.patch b/target/linux/bcm27xx/patches-5.4/950-0549-drm-vc4-plane-Move-planes-creation-to-its-own-functi.patch
new file mode 100644
index 0000000000..7c3c470849
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0549-drm-vc4-plane-Move-planes-creation-to-its-own-functi.patch
@@ -0,0 +1,125 @@
+From ac2c812856c3a496354b9f19d0a43458e108844d Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 6 Feb 2020 14:32:57 +0100
+Subject: [PATCH] drm/vc4: plane: Move planes creation to its own
+ function
+
+The planes so far were created as part of the CRTC binding code with
+each planes created associated only to one CRTC. However, the hardware
+in the vc4 doesn't really have such constraint and can be used with any
+CRTC.
+
+In order to rework this, let's first move the overlay and cursor planes
+creation to a function of its own.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c  | 33 ++++------------------------
+ drivers/gpu/drm/vc4/vc4_drv.h   |  2 ++
+ drivers/gpu/drm/vc4/vc4_plane.c | 38 +++++++++++++++++++++++++++++++++
+ 3 files changed, 44 insertions(+), 29 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -1142,7 +1142,7 @@ static int vc4_crtc_bind(struct device *
+ 	struct drm_device *drm = dev_get_drvdata(master);
+ 	struct vc4_crtc *vc4_crtc;
+ 	struct drm_crtc *crtc;
+-	struct drm_plane *primary_plane, *cursor_plane, *destroy_plane, *temp;
++	struct drm_plane *primary_plane, *destroy_plane, *temp;
+ 	const struct of_device_id *match;
+ 	int ret, i;
+ 
+@@ -1190,34 +1190,9 @@ static int vc4_crtc_bind(struct device *
+ 	 */
+ 	drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size);
+ 
+-	/* Set up some arbitrary number of planes.  We're not limited
+-	 * by a set number of physical registers, just the space in
+-	 * the HVS (16k) and how small an plane can be (28 bytes).
+-	 * However, each plane we set up takes up some memory, and
+-	 * increases the cost of looping over planes, which atomic
+-	 * modesetting does quite a bit.  As a result, we pick a
+-	 * modest number of planes to expose, that should hopefully
+-	 * still cover any sane usecase.
+-	 */
+-	for (i = 0; i < 8; i++) {
+-		struct drm_plane *plane =
+-			vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);
+-
+-		if (IS_ERR(plane))
+-			continue;
+-
+-		plane->possible_crtcs = drm_crtc_mask(crtc);
+-	}
+-
+-	/* Set up the legacy cursor after overlay initialization,
+-	 * since we overlay planes on the CRTC in the order they were
+-	 * initialized.
+-	 */
+-	cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR);
+-	if (!IS_ERR(cursor_plane)) {
+-		cursor_plane->possible_crtcs = drm_crtc_mask(crtc);
+-		crtc->cursor = cursor_plane;
+-	}
++	ret = vc4_plane_create_additional_planes(drm, crtc);
++	if (ret)
++		goto err_destroy_planes;
+ 
+ 	vc4_crtc_get_cob_allocation(vc4_crtc);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -855,6 +855,8 @@ int vc4_kms_load(struct drm_device *dev)
+ /* vc4_plane.c */
+ struct drm_plane *vc4_plane_init(struct drm_device *dev,
+ 				 enum drm_plane_type type);
++int vc4_plane_create_additional_planes(struct drm_device *dev,
++				       struct drm_crtc *crtc);
+ u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist);
+ u32 vc4_plane_dlist_size(const struct drm_plane_state *state);
+ void vc4_plane_async_set_fb(struct drm_plane *plane,
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -1437,3 +1437,41 @@ struct drm_plane *vc4_plane_init(struct
+ 
+ 	return plane;
+ }
++
++int vc4_plane_create_additional_planes(struct drm_device *drm,
++				       struct drm_crtc *crtc)
++{
++	struct drm_plane *cursor_plane;
++	unsigned int i;
++
++	/* Set up some arbitrary number of planes.  We're not limited
++	 * by a set number of physical registers, just the space in
++	 * the HVS (16k) and how small an plane can be (28 bytes).
++	 * However, each plane we set up takes up some memory, and
++	 * increases the cost of looping over planes, which atomic
++	 * modesetting does quite a bit.  As a result, we pick a
++	 * modest number of planes to expose, that should hopefully
++	 * still cover any sane usecase.
++	 */
++	for (i = 0; i < 8; i++) {
++		struct drm_plane *plane =
++			vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);
++
++		if (IS_ERR(plane))
++			continue;
++
++		plane->possible_crtcs = drm_crtc_mask(crtc);
++	}
++
++	/* Set up the legacy cursor after overlay initialization,
++	 * since we overlay planes on the CRTC in the order they were
++	 * initialized.
++	 */
++	cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR);
++	if (!IS_ERR(cursor_plane)) {
++		cursor_plane->possible_crtcs = drm_crtc_mask(crtc);
++		crtc->cursor = cursor_plane;
++	}
++
++	return 0;
++}