drm-Separate-BOE-and-SDC-OLED-Deck-panel-rates.patch

From 2e4d7ad1bf2cb98eb67ff8f9385cf6657cf2e912 Mon Sep 17 00:00:00 2001
From: Matthew Schwartz <njtransit215@gmail.com>
Date: Wed, 3 Jul 2024 15:20:08 -0700
Subject: [PATCH] drm: Separate BOE and SDC OLED Deck panel valid refresh rates

OLED Decks with BOE panels seem to struggle with a few different
specific modesets (51hz/55hz/65hz) that SDC panels have no issues with.
To work around this, let's make use of Gamescope recognizing each
display manufacturer to correct the bad modesets while leaving
SDC panel units alone. This can be reverted if an underlying cause can
be found in the kernel in the future.
---
 src/Backends/DRMBackend.cpp | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/Backends/DRMBackend.cpp b/src/Backends/DRMBackend.cpp
index 97ef446..9f93c7f 100644
--- a/src/Backends/DRMBackend.cpp
+++ b/src/Backends/DRMBackend.cpp
@@ -554,7 +554,7 @@ static constexpr uint32_t s_kSteamDeckLCDRates[] =
 	60,
 };
 
-static constexpr uint32_t s_kSteamDeckOLEDRates[] =
+static constexpr uint32_t s_kSteamDeckOLEDSDCRates[] =
 {
 	45, 47, 48, 49, 
 	50, 51, 53, 55, 56, 59, 
@@ -564,6 +564,16 @@ static constexpr uint32_t s_kSteamDeckOLEDRates[] =
 	90, 
 };
 
+static constexpr uint32_t s_kSteamDeckOLEDBOERates[] =
+{
+	45, 47, 48, 49, 
+	50, 53, 56, 59, 
+	60, 62, 64, 66, 68, 
+	72, 73, 76, 77, 78, 
+	80, 81, 82, 84, 85, 86, 87, 88, 
+	90, 
+};
+
 static void update_connector_display_info_wl(struct drm_t *drm)
 {
 	wlserver_lock();
@@ -2128,12 +2138,12 @@ namespace gamescope
 			if ( pProduct->product == kPIDGalileoSDC )
 			{
 				m_Mutable.eKnownDisplay = GAMESCOPE_KNOWN_DISPLAY_STEAM_DECK_OLED_SDC;
-				m_Mutable.ValidDynamicRefreshRates = std::span( s_kSteamDeckOLEDRates );
+				m_Mutable.ValidDynamicRefreshRates = std::span( s_kSteamDeckOLEDSDCRates );
 			}
 			else if ( pProduct->product == kPIDGalileoBOE )
 			{
 				m_Mutable.eKnownDisplay = GAMESCOPE_KNOWN_DISPLAY_STEAM_DECK_OLED_BOE;
-				m_Mutable.ValidDynamicRefreshRates = std::span( s_kSteamDeckOLEDRates );
+				m_Mutable.ValidDynamicRefreshRates = std::span( s_kSteamDeckOLEDBOERates );
 			}
 			else
 			{
-- 
2.45.2