From cfb739628749eddf8af27038e83e6e19543b96be Mon Sep 17 00:00:00 2001
From: NewGBAXL <81663474+NewGBAXL@users.noreply.github.com>
Date: Wed, 25 Feb 2026 11:29:19 -0500
Subject: [PATCH 1/2] Support Force Feedback Wheel

Loosen arbitrary pad filtering, implement PAD_ControlForce(), add aliases and state defines
---
 include/ogc/pad.h | 19 +++++++++++++++++--
 libogc/pad.c      | 39 +++++++++++++++++++++++++++++++++++++--
 2 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/include/ogc/pad.h b/include/ogc/pad.h
index 83636fae..2ad89d79 100644
--- a/include/ogc/pad.h
+++ b/include/ogc/pad.h
@@ -19,6 +19,9 @@
 #define PAD_MOTOR_RUMBLE			1
 #define PAD_MOTOR_STOP_HARD			2
 
+#define PAD_FORCE_ON				3
+#define PAD_FORCE_OFF				2
+
 #define PAD_ERR_NONE				0
 #define PAD_ERR_NO_CONTROLLER		-1
 #define PAD_ERR_NOT_READY			-2
@@ -31,6 +34,7 @@
 #define PAD_TRIGGER_Z				0x0010
 #define PAD_TRIGGER_R				0x0020
 #define PAD_TRIGGER_L				0x0040
+#define PAD_PEDAL_CONNECT			0x0080
 #define PAD_BUTTON_A				0x0100
 #define PAD_BUTTON_B				0x0200
 #define PAD_BUTTON_X				0x0400
@@ -48,8 +52,16 @@ typedef struct _padstatus {
 	u16 button;
 	s8 stickX;
 	s8 stickY;
-	s8 substickX;
-	s8 substickY;
+	union {
+		struct {
+			s8 substickX;
+			s8 substickY;
+		};
+		struct {
+			s8 gas;
+			s8 brake;
+		};
+	};
 	u8 triggerL;
 	u8 triggerR;
 	u8 analogA;
@@ -96,6 +108,9 @@ u8 PAD_TriggerR(s32 chan);
 u8 PAD_AnalogA(s32 chan);
 u8 PAD_AnalogB(s32 chan);
 
+#define PAD_Gas(chan) PAD_SubStickX(chan)
+#define PAD_Brake(chan) PAD_SubStickY(chan)
+
 sampling_callback PAD_SetSamplingCallback(sampling_callback cb);
 
 /*+----------------------------------------------------------------------------------------------+*/
diff --git a/libogc/pad.c b/libogc/pad.c
index ceaa99b0..91126ec2 100644
--- a/libogc/pad.c
+++ b/libogc/pad.c
@@ -386,7 +386,7 @@ static void __pad_typeandstatuscallback(s32 chan,u32 type)
 
 	__pad_type[__pad_resettingchan] = (type&~0xff);
 	if(((type&SI_TYPE_MASK)-SI_TYPE_GC)
-		|| !(type&SI_GC_STANDARD)) {
+		|| (type == SI_GC_RECEIVER)) {
 		__pad_doreset();
 		return;
 	}
@@ -437,6 +437,12 @@ static void __pad_enable(u32 chan)
 #endif
 	__pad_enabledbits |= PAD_CHAN_BIT(chan);
 	SI_GetResponse(chan,(void*)buf);
+	if (SI_GetType(chan) != SI_GC_KEYBOARD) {
+		SI_SetCommand(chan, (__pad_analogmode | 0x00400000));
+	}
+	else {
+		SI_SetCommand(chan, 0x00540000); //Keyboard-specific polling command
+	}
 	SI_SetCommand(chan,(__pad_analogmode|0x00400000));
 	SI_EnablePolling(__pad_enabledbits);
 }
@@ -617,7 +623,9 @@ u32 PAD_Read(PADStatus *status)
 #ifdef _PAD_DEBUG
 						printf("PAD_Read(%08x %08x)\n",buf[0],buf[1]);
 #endif
-						__pad_makestatus(chan,buf,&status[chan]);
+						if (type != SI_GC_KEYBOARD) {
+							__pad_makestatus(chan, buf, &status[chan]);
+						}
 #ifdef _PAD_DEBUG
 						printf("PAD_Read(%08x)\n",status[chan].button);
 #endif
@@ -833,6 +841,33 @@ void PAD_ControlMotor(s32 chan,u32 cmd)
 	_CPU_ISR_Restore(level);
 }
 
+void PAD_ControlForce(s32 chan, u32 cmd, s32 intensity)
+{
+	u32 level;
+	u32 mask, type;
+
+	if (intensity >= 0x80) {
+		cmd |= 0x100;
+	}
+	else if (intensity > -0x80) {
+		cmd |= intensity + 0x80;
+	}
+	cmd &= 0x7FF;
+
+	_CPU_ISR_Disable(level);
+
+	mask = PAD_CHAN_BIT(chan);
+	if (__pad_enabledbits & mask) {
+		type = SI_GetType(chan);
+		if (type == SI_GC_STEERING) {
+			cmd |= 0x300000;
+			SI_SetCommand(chan, cmd);
+			SI_TransferCommands();
+		}
+	}
+	_CPU_ISR_Restore(level);
+}
+
 void PAD_SetSamplingRate(u32 samplingrate)
 {
 	SI_SetSamplingRate(samplingrate);

From f0fb0832a65c958ad5750bd298f6cbe0ab6d6656 Mon Sep 17 00:00:00 2001
From: NewGBAXL <81663474+NewGBAXL@users.noreply.github.com>
Date: Wed, 25 Feb 2026 12:08:11 -0500
Subject: [PATCH 2/2] Remove FF Wheel aliases

---
 include/ogc/pad.h | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/include/ogc/pad.h b/include/ogc/pad.h
index 2ad89d79..01ff5f3b 100644
--- a/include/ogc/pad.h
+++ b/include/ogc/pad.h
@@ -52,16 +52,8 @@ typedef struct _padstatus {
 	u16 button;
 	s8 stickX;
 	s8 stickY;
-	union {
-		struct {
-			s8 substickX;
-			s8 substickY;
-		};
-		struct {
-			s8 gas;
-			s8 brake;
-		};
-	};
+	s8 substickX;
+	s8 substickY;
 	u8 triggerL;
 	u8 triggerR;
 	u8 analogA;
@@ -108,9 +100,6 @@ u8 PAD_TriggerR(s32 chan);
 u8 PAD_AnalogA(s32 chan);
 u8 PAD_AnalogB(s32 chan);
 
-#define PAD_Gas(chan) PAD_SubStickX(chan)
-#define PAD_Brake(chan) PAD_SubStickY(chan)
-
 sampling_callback PAD_SetSamplingCallback(sampling_callback cb);
 
 /*+----------------------------------------------------------------------------------------------+*/