openwrt/target/linux/bcm27xx/patches-5.4/950-0551-drm-vc4-plane-Create-more-planes.patch
Álvaro Fernández Rojas 77e97abf12 bcm27xx: update to latest patches from RPi foundation
Also removes random module and switches to new bcm2711 thermal driver.
Boot tested on RPi 4B v1.1 4G.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-05-28 19:12:43 +02:00

33 lines
1.1 KiB
Diff

From b79a33509a3aa863cdf54d24e1a4a0cc2c6fe84c Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Thu, 6 Feb 2020 14:52:42 +0100
Subject: [PATCH] drm/vc4: plane: Create more planes
Let's now create more planes that can be affected to all the CRTCs.
vc4 has 3 CRTCs, 1 primary and 1 cursor each, and was having 24 (8
planes per CRTC) overlays.
However, vc5 has 5 CRTCs, so keeping the same logic would put us at 50
planes which is well above the 32 planes limit imposed by DRM.
Using 16 seems like a good tradeoff between staying under 32 and yet
providing enough planes.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_plane.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -1453,7 +1453,7 @@ int vc4_plane_create_additional_planes(s
* modest number of planes to expose, that should hopefully
* still cover any sane usecase.
*/
- for (i = 0; i < 8; i++) {
+ for (i = 0; i < 16; i++) {
struct drm_plane *plane =
vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);