mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
ca5c695a45
Deleted following upstreamed patches: bcm27xx: 950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch bcm27xx: 950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch bcm27xx: 950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch bcm27xx: 950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch bcm27xx: 950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch bcm27xx: 950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch bcm27xx: 950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch bcm27xx: 950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch bcm27xx: 950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch bcm27xx: 950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch bcm27xx: 950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch bcm27xx: 950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch bcm27xx: 950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch bcm27xx: 950-0477-drm-vc4-Correct-DSI-divider-calculations.patch bcm27xx: 950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch bcm53xx: 072-next-ARM_dts_BCM53015-add-mr26.patch mediatek: 920-linux-next-dts-mt7622-bpi-r64-fix-wps-button.patch Manually rebased following patches: bcm27xx: 950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch bcm27xx: 950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch bcm27xx: 950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch bcm27xx: 950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch bcm27xx: 950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch bcm27xx: 950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch bcm27xx: 950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch Runtime tested on turris-omnia and glinet-b1300. Tested-by: John Audia <therealgraysky@proton.me> [bcm2711/RPi4B, mt7622/RT3200] Signed-off-by: Petr Štetiar <ynezz@true.cz>
48 lines
2.0 KiB
Diff
48 lines
2.0 KiB
Diff
From faa24f47c0066893e0b7772befe378bde4dc2ff9 Mon Sep 17 00:00:00 2001
|
|
From: Maxime Ripard <maxime@cerno.tech>
|
|
Date: Mon, 25 Oct 2021 17:28:54 +0200
|
|
Subject: [PATCH] drm/vc4: hdmi: Remove the DDC probing for status
|
|
detection
|
|
|
|
Commit 9d44abbbb8d5 ("drm/vc4: Fall back to using an EDID probe in the
|
|
absence of a GPIO.") added some code to read the EDID through DDC in the
|
|
HDMI driver detect hook since the Pi3 had no HPD GPIO back then.
|
|
However, commit b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of
|
|
Expander") changed that a couple of years later.
|
|
|
|
This causes an issue though since some TV (like the LG 55C8) when it
|
|
comes out of standy will deassert the HPD line, but the EDID will
|
|
remain readable.
|
|
|
|
It causes an issues nn platforms without an HPD GPIO, like the Pi4,
|
|
where the DDC probing will be our primary mean to detect a display, and
|
|
thus we will never detect the HPD pulse. This was fine before since the
|
|
pulse was small enough that we would never detect it, and we also didn't
|
|
have anything (like the scrambler) that needed to be set up in the
|
|
display.
|
|
|
|
However, now that we have both, the display during the HPD pulse will
|
|
clear its scrambler status, and since we won't detect the
|
|
disconnect/reconnect cycle we will never enable the scrambler back.
|
|
|
|
As our main reason for that DDC probing is gone, let's just remove it.
|
|
|
|
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
|
|
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Link: https://lore.kernel.org/r/20211025152903.1088803-2-maxime@cerno.tech
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_hdmi.c | 2 --
|
|
1 file changed, 2 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
@@ -179,8 +179,6 @@ vc4_hdmi_connector_detect(struct drm_con
|
|
if (vc4_hdmi->hpd_gpio) {
|
|
if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio))
|
|
connected = true;
|
|
- } else if (drm_probe_ddc(vc4_hdmi->ddc)) {
|
|
- connected = true;
|
|
} else if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) {
|
|
connected = true;
|
|
}
|