openwrt/target/linux/bcm27xx/patches-5.4/950-0222-drm-vc4-Fix-oops-at-boot-with-firmwarekms-on-4.19.patch
Álvaro Fernández Rojas f07e572f64 bcm27xx: import latest patches from the RPi foundation
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
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>
2021-02-18 23:42:32 +01:00

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749 B
Diff

From 50f3c90e2400a0391a7461e5e2fea86ffb3f8f60 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 4 Mar 2019 11:59:34 -0800
Subject: [PATCH] drm/vc4: Fix oops at boot with firmwarekms on 4.19.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/gpu/drm/vc4/vc4_kms.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -116,6 +116,9 @@ vc4_ctm_commit(struct vc4_dev *vc4, stru
struct vc4_ctm_state *ctm_state = to_vc4_ctm_state(vc4->ctm_manager.state);
struct drm_color_ctm *ctm = ctm_state->ctm;
+ if (vc4->firmware_kms)
+ return;
+
if (ctm_state->fifo) {
HVS_WRITE(SCALER_OLEDCOEF2,
VC4_SET_FIELD(vc4_ctm_s31_32_to_s0_9(ctm->matrix[0]),