SDL: Don't tickle Bluetooth PS5 controllers in simple mode with an effects packet (910da)

From 910dad505af1684d1a6ebce3a8a371830fd3e50b Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 17 Jul 2023 16:42:58 -0700
Subject: [PATCH] Don't tickle Bluetooth PS5 controllers in simple mode with an
 effects packet

That will put the PS5 controller into enhanced mode, which breaks DirectInput games

(cherry picked from commit 2fef0be2f646ae048e239aa6694e632081c85238)
---
 src/joystick/hidapi/SDL_hidapi_ps5.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/src/joystick/hidapi/SDL_hidapi_ps5.c b/src/joystick/hidapi/SDL_hidapi_ps5.c
index 8a3608b6dede..db47e32ad564 100644
--- a/src/joystick/hidapi/SDL_hidapi_ps5.c
+++ b/src/joystick/hidapi/SDL_hidapi_ps5.c
@@ -745,16 +745,25 @@ static void HIDAPI_DriverPS5_CheckPendingLEDReset(SDL_HIDAPI_Device *device)
 
 static void HIDAPI_DriverPS5_TickleBluetooth(SDL_HIDAPI_Device *device)
 {
-    /* This is just a dummy packet that should have no effect, since we don't set the CRC */
-    Uint8 data[78];
+    SDL_DriverPS5_Context *ctx = (SDL_DriverPS5_Context *)device->context;
 
-    SDL_zeroa(data);
+    if (ctx->enhanced_mode) {
+        /* This is just a dummy packet that should have no effect, since we don't set the CRC */
+        Uint8 data[78];
+
+        SDL_zeroa(data);
 
-    data[0] = k_EPS5ReportIdBluetoothEffects;
-    data[1] = 0x02; /* Magic value */
+        data[0] = k_EPS5ReportIdBluetoothEffects;
+        data[1] = 0x02; /* Magic value */
 
-    if (SDL_HIDAPI_LockRumble() == 0) {
-        SDL_HIDAPI_SendRumbleAndUnlock(device, data, sizeof(data));
+        if (SDL_HIDAPI_LockRumble() == 0) {
+            SDL_HIDAPI_SendRumbleAndUnlock(device, data, sizeof(data));
+        }
+    } else {
+        /* We can't even send an invalid effects packet, or it will put the controller in enhanced mode */
+        if (device->num_joysticks > 0) {
+            HIDAPI_JoystickDisconnected(device, device->joysticks[0]);
+        }
     }
 }