From 3d0654dd4872a3e2e0c6cab80e2caa713f4cd949 Mon Sep 17 00:00:00 2001
From: TellowKrinkle <tellowkrinkle@gmail.com>
Date: Tue, 30 Nov 2021 03:22:42 -0600
Subject: [PATCH] PAD:SDL: Let users set their own hints from the config

---
 pcsx2/PAD/Linux/Config.cpp       | 20 +++++++++++++++++---
 pcsx2/PAD/Linux/Config.h         |  1 +
 pcsx2/PAD/Linux/SDL/joystick.cpp |  3 +++
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/pcsx2/PAD/Linux/Config.cpp b/pcsx2/PAD/Linux/Config.cpp
index d51b778327..57d5e201b3 100644
--- a/pcsx2/PAD/Linux/Config.cpp
+++ b/pcsx2/PAD/Linux/Config.cpp
@@ -84,6 +84,9 @@ void PADSaveConfig()
 	for (auto const& it : g_conf.sdl2_mapping)
 		fprintf(f, "SDL2 = %s\n", it.c_str());
 
+	for (auto const& pair : g_conf.sdl2_hints)
+		fprintf(f, "SDL_HINT_%s = %s\n", pair.first.c_str(), pair.second.c_str());
+
 	fclose(f);
 }
 
@@ -139,9 +142,20 @@ void PADLoadConfig()
 			have_user_setting = true;
 	}
 
-	char sdl2[512];
-	while (fscanf(f, "SDL2 = %511[^\n]\n", sdl2) == 1)
-		g_conf.sdl2_mapping.push_back(std::string(sdl2));
+	char extra_name[512];
+	char extra_value[512];
+	while (fscanf(f, "%511[^ =] = %511[^\n]\n", extra_name, extra_value) == 2)
+	{
+		static constexpr const char* HINT_PREFIX = "SDL_HINT_";
+		if (strcmp(extra_name, "SDL2") == 0)
+		{
+			g_conf.sdl2_mapping.push_back(std::string(extra_value));
+		}
+		else if (strncmp(extra_name, HINT_PREFIX, strlen(HINT_PREFIX)) == 0)
+		{
+			g_conf.sdl2_hints.push_back({extra_name + strlen(HINT_PREFIX), extra_value});
+		}
+	}
 
 	if (!have_user_setting)
 		DefaultKeyboardValues();
diff --git a/pcsx2/PAD/Linux/Config.h b/pcsx2/PAD/Linux/Config.h
index 26f46f0ed6..1cd4145131 100644
--- a/pcsx2/PAD/Linux/Config.h
+++ b/pcsx2/PAD/Linux/Config.h
@@ -44,6 +44,7 @@ public:
 	std::map<u32, u32> keysym_map[GAMEPAD_NUMBER];
 	std::array<size_t, GAMEPAD_NUMBER> unique_id;
 	std::vector<std::string> sdl2_mapping;
+	std::vector<std::pair<std::string, std::string>> sdl2_hints;
 
 	PADconf() { init(); }
 
diff --git a/pcsx2/PAD/Linux/SDL/joystick.cpp b/pcsx2/PAD/Linux/SDL/joystick.cpp
index d83ef9f496..a140a09e83 100644
--- a/pcsx2/PAD/Linux/SDL/joystick.cpp
+++ b/pcsx2/PAD/Linux/SDL/joystick.cpp
@@ -43,6 +43,9 @@ void JoystickInfo::EnumerateJoysticks(std::vector<std::unique_ptr<Device>>& vjoy
 		// New as of SDL 2.0.18, so use string
 		SDL_SetHint("SDL_JOYSTICK_HIDAPI_SWITCH_HOME_LED", "0");
 
+		for (const auto& hint : g_conf.sdl2_hints)
+			SDL_SetHint(hint.first.c_str(), hint.second.c_str());
+
 		if (SDL_Init(flag) < 0)
 			return;