openwrt/target/linux/bcm27xx/patches-5.4/950-0545-drm-vc4-plane-Create-more-planes.patch
Hauke Mehrtens bcaabe6d05 kernel: bump 5.4 to 5.4.211
Similar version was upstreamed:
 bcm27xx/patches-5.4/950-0392-tty-amba-pl011-Add-un-throttle-support.patch

Manually adapted:
 ipq806x/patches-5.4/0063-2-tsens-support-configurable-interrupts.patch
 layerscape/patches-5.4/301-arch-0008-arm-add-new-non-shareable-ioremap.patch

Compile-tested: x86/64
Run-tested: x86/64

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2022-09-04 15:32:22 +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
@@ -1459,7 +1459,7 @@ 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);