mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 06:08:08 +00:00
793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
59 lines
2.1 KiB
Diff
59 lines
2.1 KiB
Diff
From d75b03d83ecc46b2f0ea13b7934cf3a093914388 Mon Sep 17 00:00:00 2001
|
|
From: Dom Cobley <popcornmix@gmail.com>
|
|
Date: Wed, 1 Jun 2022 15:43:51 +0100
|
|
Subject: [PATCH] drm/vc4_hdmi: Allow hotplug detect to be forced
|
|
|
|
See: https://forum.libreelec.tv/thread/24783-tv-avr-turns-back-on-right-after-turning-them-off
|
|
|
|
While the kernel provides a :D flag for assuming device is connected,
|
|
it doesn't stop this function from being called and generating a cec_phys_addr_invalidate
|
|
message when hotplug is deasserted.
|
|
|
|
That message provokes a flurry of CEC messages which for many users results in the TV
|
|
switching back on again and it's very hard to get it to stay switched off.
|
|
|
|
It seems to only occur with an AVR and TV connected but has been observed across a
|
|
number of manufacturers.
|
|
|
|
The issue started with https://github.com/raspberrypi/linux/pull/4371
|
|
and this provides an optional way of getting back the old behaviour
|
|
|
|
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_hdmi.c | 10 +++++++++-
|
|
1 file changed, 9 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
@@ -41,6 +41,8 @@
|
|
#include <linux/component.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/i2c.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/moduleparam.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/pm_runtime.h>
|
|
@@ -113,6 +115,10 @@
|
|
|
|
#define HDMI_14_MAX_TMDS_CLK (340 * 1000 * 1000)
|
|
|
|
+/* bit field to force hotplug detection. bit0 = HDMI0 */
|
|
+static int force_hotplug = 0;
|
|
+module_param(force_hotplug, int, 0644);
|
|
+
|
|
static const char * const output_format_str[] = {
|
|
[VC4_HDMI_OUTPUT_RGB] = "RGB",
|
|
[VC4_HDMI_OUTPUT_YUV420] = "YUV 4:2:0",
|
|
@@ -475,7 +481,9 @@ static int vc4_hdmi_connector_detect_ctx
|
|
|
|
WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
|
|
|
|
- if (vc4_hdmi->hpd_gpio) {
|
|
+ if (force_hotplug & BIT(vc4_hdmi->encoder.type - VC4_ENCODER_TYPE_HDMI0))
|
|
+ status = connector_status_connected;
|
|
+ else if (vc4_hdmi->hpd_gpio) {
|
|
if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio))
|
|
status = connector_status_connected;
|
|
} else {
|