openwrt/target/linux/bcm27xx/patches-6.6/950-0037-drm-vc4-drop-unnecessary-and-harmful-HDMI-RGB-format.patch
John Audia 51db334005 kernel: bump 6.6 to 6.6.54
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.54

Removed upstreamed:
	generic/backport-6.6/780-24-v6.12-r8169-disable-ALDPS-per-default-for-RTL8125.patch[1]
	generic/pending-6.6/360-selftests-bpf-portability-of-unprivileged-tests.patch[2]

Manually rebased:
	bcm53xx/patches-6.6/180-usb-xhci-add-support-for-performing-fake-doorbell.patch
	bmips/patches-6.6/200-mips-bmips-automatically-detect-CPU-frequency.patch

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.54&id=50d062b6cc90c45a0de54e9bd9903c82777d66bf
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.54&id=103c0431c7fb4790affea121126840dbfb146341

Build system: x86/64
Build-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3
Run-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3

Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/16602
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2024-10-05 12:43:51 +02:00

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1.5 KiB
Diff

From 4b89e6e55f5c04f836b92ffbeef7c4c8a545adfd Mon Sep 17 00:00:00 2001
From: Matthias Reichl <hias@horus.com>
Date: Sat, 11 Mar 2023 22:41:17 +0100
Subject: [PATCH 0037/1085] drm/vc4: drop unnecessary and harmful HDMI RGB
format check
RGB is a mandatory format for all DVI and HDMI monitors so there's
no need to check for presence of the DRM_COLOR_FORMAT_RGB444 bit in
color_formats.
More importantly this checks breaks working around EDID issues with
eg video=HDMI-A-1:1024x768D or drm.edid_firmware=edid/1024x768.bin
as the RGB444 bit is only set when a valid EDID with digital bit set in
the input byte is present - which isn't the case when no EDID can be
read from the display device at all or with the in-built kernel EDIDs,
which mimic analog (VGA) displays without the digital bit set.
So drop the check, if we output video on the HDMI connector we can
assume that the display can accept 8bit RGB.
Signed-off-by: Matthias Reichl <hias@horus.com>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1958,9 +1958,6 @@ vc4_hdmi_sink_supports_format_bpc(const
case VC4_HDMI_OUTPUT_RGB:
drm_dbg(dev, "RGB Format, checking the constraints.\n");
- if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))
- return false;
-
if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
return false;