Added initial support for Wii controllers (thanks @tellowkrinkle!)

Makefile.os2

@@ -89,7 +89,7 @@ SRCS+= SDL_systimer.c
 SRCS+= SDL_sysloadso.c
 SRCS+= SDL_sysfilesystem.c
 SRCS+= SDL_os2joystick.c SDL_syshaptic.c SDL_sysjoystick.c SDL_virtualjoystick.c
-SRCS+= SDL_hidapijoystick.c SDL_hidapi_rumble.c SDL_hidapi_combined.c SDL_hidapi_gamecube.c SDL_hidapi_luna.c SDL_hidapi_ps3.c SDL_hidapi_ps4.c SDL_hidapi_ps5.c SDL_hidapi_shield.c SDL_hidapi_stadia.c SDL_hidapi_switch.c SDL_hidapi_xbox360.c SDL_hidapi_xbox360w.c SDL_hidapi_xboxone.c SDL_hidapi_steam.c
+SRCS+= SDL_hidapijoystick.c SDL_hidapi_rumble.c SDL_hidapi_combined.c SDL_hidapi_gamecube.c SDL_hidapi_luna.c SDL_hidapi_ps3.c SDL_hidapi_ps4.c SDL_hidapi_ps5.c SDL_hidapi_shield.c SDL_hidapi_stadia.c SDL_hidapi_switch.c SDL_hidapi_wii.c SDL_hidapi_xbox360.c SDL_hidapi_xbox360w.c SDL_hidapi_xboxone.c SDL_hidapi_steam.c
 SRCS+= SDL_dummyaudio.c SDL_diskaudio.c
 SRCS+= SDL_nullvideo.c SDL_nullframebuffer.c SDL_nullevents.c
 SRCS+= SDL_dummysensor.c

Makefile.w32

@@ -65,7 +65,7 @@ SRCS+= SDL_systimer.c
 SRCS+= SDL_sysloadso.c
 SRCS+= SDL_sysfilesystem.c
 SRCS+= SDL_syshaptic.c SDL_sysjoystick.c SDL_virtualjoystick.c
-SRCS+= SDL_hidapijoystick.c SDL_hidapi_rumble.c SDL_hidapi_combined.c SDL_hidapi_gamecube.c SDL_hidapi_luna.c SDL_hidapi_ps3.c SDL_hidapi_ps4.c SDL_hidapi_ps5.c SDL_hidapi_shield.c SDL_hidapi_stadia.c SDL_hidapi_switch.c SDL_hidapi_xbox360.c SDL_hidapi_xbox360w.c SDL_hidapi_xboxone.c SDL_hidapi_steam.c
+SRCS+= SDL_hidapijoystick.c SDL_hidapi_rumble.c SDL_hidapi_combined.c SDL_hidapi_gamecube.c SDL_hidapi_luna.c SDL_hidapi_ps3.c SDL_hidapi_ps4.c SDL_hidapi_ps5.c SDL_hidapi_shield.c SDL_hidapi_stadia.c SDL_hidapi_switch.c SDL_hidapi_wii.c SDL_hidapi_xbox360.c SDL_hidapi_xbox360w.c SDL_hidapi_xboxone.c SDL_hidapi_steam.c
 SRCS+= SDL_dummyaudio.c SDL_diskaudio.c
 SRCS+= SDL_nullvideo.c SDL_nullframebuffer.c SDL_nullevents.c
 SRCS+= SDL_dummysensor.c

VisualC-GDK/SDL/SDL.vcxproj

@@ -602,6 +602,7 @@
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_shield.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_stadia.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_switch.c" />
+    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_wii.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360w.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xboxone.c" />

VisualC-GDK/SDL/SDL.vcxproj.filters

@@ -1084,6 +1084,9 @@
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_switch.c">
       <Filter>joystick\hidapi</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_wii.c">
+      <Filter>joystick\hidapi</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360.c">
       <Filter>joystick\hidapi</Filter>
     </ClCompile>

VisualC/SDL/SDL.vcxproj

@@ -493,6 +493,7 @@
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_shield.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_stadia.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_switch.c" />
+    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_wii.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360w.c" />
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xboxone.c" />

VisualC/SDL/SDL.vcxproj.filters

@@ -1077,6 +1077,9 @@
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_switch.c">
       <Filter>joystick\hidapi</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_wii.c">
+      <Filter>joystick\hidapi</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360.c">
       <Filter>joystick\hidapi</Filter>
     </ClCompile>

include/SDL_hints.h

@@ -854,6 +854,17 @@ extern "C" {
  */
 #define SDL_HINT_JOYSTICK_HIDAPI_SWITCH_PLAYER_LED "SDL_JOYSTICK_HIDAPI_SWITCH_PLAYER_LED"
 
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Nintendo Wii and Wii U controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_WII "SDL_JOYSTICK_HIDAPI_WII"
+
 /**
  *  \brief  A variable controlling whether the HIDAPI driver for XBox controllers should be used.
  *

src/joystick/hidapi/SDL_hidapi_wii.c

@@ -0,0 +1,879 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#ifdef SDL_JOYSTICK_HIDAPI
+
+#include "SDL_hints.h"
+#include "SDL_events.h"
+#include "SDL_timer.h"
+#include "SDL_joystick.h"
+#include "SDL_gamecontroller.h"
+#include "../../SDL_hints_c.h"
+#include "../SDL_sysjoystick.h"
+#include "SDL_hidapijoystick_c.h"
+#include "SDL_hidapi_rumble.h"
+
+
+#ifdef SDL_JOYSTICK_HIDAPI_WII
+
+/* Define this if you want to log all packets from the controller */
+/*#define DEBUG_WII_PROTOCOL*/
+
+typedef enum {
+    k_eWiiInputReportIDs_Status      = 0x20,
+    k_eWiiInputReportIDs_ReadMemory  = 0x21,
+    k_eWiiInputReportIDs_Acknowledge = 0x22,
+    k_eWiiInputReportIDs_ButtonData0 = 0x30,
+    k_eWiiInputReportIDs_ButtonData1 = 0x31,
+    k_eWiiInputReportIDs_ButtonData2 = 0x32,
+    k_eWiiInputReportIDs_ButtonData3 = 0x33,
+    k_eWiiInputReportIDs_ButtonData4 = 0x34,
+    k_eWiiInputReportIDs_ButtonData5 = 0x35,
+    k_eWiiInputReportIDs_ButtonData6 = 0x36,
+    k_eWiiInputReportIDs_ButtonData7 = 0x37,
+    k_eWiiInputReportIDs_ButtonDataD = 0x3D,
+    k_eWiiInputReportIDs_ButtonDataE = 0x3E,
+    k_eWiiInputReportIDs_ButtonDataF = 0x3F,
+} EWiiInputReportIDs;
+
+typedef enum {
+    k_eWiiOutputReportIDs_Rumble            = 0x10,
+    k_eWiiOutputReportIDs_LEDs              = 0x11,
+    k_eWiiOutputReportIDs_DataReportingMode = 0x12,
+    k_eWiiOutputReportIDs_IRCameraEnable    = 0x13,
+    k_eWiiOutputReportIDs_SpeakerEnable     = 0x14,
+    k_eWiiOutputReportIDs_StatusRequest     = 0x15,
+    k_eWiiOutputReportIDs_WriteMemory       = 0x16,
+    k_eWiiOutputReportIDs_ReadMemory        = 0x17,
+    k_eWiiOutputReportIDs_SpeakerData       = 0x18,
+    k_eWiiOutputReportIDs_SpeakerMute       = 0x19,
+    k_eWiiOutputReportIDs_IRCameraEnable2   = 0x1a,
+} EWiiOutputReportIDs;
+
+typedef enum {
+    k_eWiiPlayerLEDs_P1 = 0x10,
+    k_eWiiPlayerLEDs_P2 = 0x20,
+    k_eWiiPlayerLEDs_P3 = 0x40,
+    k_eWiiPlayerLEDs_P4 = 0x80,
+} EWiiPlayerLEDs;
+
+typedef enum {
+    k_eWiiExtensionControllerType_None,
+    k_eWiiExtensionControllerType_Unknown,
+    k_eWiiExtensionControllerType_Nunchuck,
+    k_eWiiExtensionControllerType_ClassicController,
+    k_eWiiExtensionControllerType_ClassicControllerPro,
+    k_eWiiExtensionControllerType_WiiUPro,
+} EWiiExtensionControllerType;
+
+#define k_unWiiPacketDataLength 22
+
+typedef struct {
+    Uint8 rgucBaseButtons[2];
+    Uint8 rgucAccelerometer[3];
+    Uint8 rgucExtension[21];
+    SDL_bool hasBaseButtons;
+    SDL_bool hasAccelerometer;
+    Uint8 ucNExtensionBytes;
+} WiiButtonData;
+
+typedef struct {
+    SDL_HIDAPI_Device *device;
+    EWiiExtensionControllerType m_eExtensionControllerType;
+    SDL_bool m_bUseButtonLabels;
+    SDL_bool m_bRumbleActive;
+    Uint8 m_rgucReadBuffer[k_unWiiPacketDataLength];
+    Uint32 m_iLastStatus;
+    int m_playerIndex;
+
+    struct StickCalibrationData {
+        Uint16 min;
+        Uint16 max;
+        Uint16 center;
+        Uint16 deadzone;
+    } m_StickCalibrationData[6];
+} SDL_DriverWii_Context;
+
+static void
+HIDAPI_DriverWii_RegisterHints(SDL_HintCallback callback, void *userdata)
+{
+    SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_WII, callback, userdata);
+}
+
+static void
+HIDAPI_DriverWii_UnregisterHints(SDL_HintCallback callback, void *userdata)
+{
+    SDL_DelHintCallback(SDL_HINT_JOYSTICK_HIDAPI_WII, callback, userdata);
+}
+
+static SDL_bool
+HIDAPI_DriverWii_IsEnabled(void)
+{
+    return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_WII,
+               SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI,
+                   SDL_HIDAPI_DEFAULT));
+}
+
+static SDL_bool
+HIDAPI_DriverWii_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *name, SDL_GameControllerType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
+{
+    if (vendor_id == USB_VENDOR_NINTENDO && product_id == USB_PRODUCT_NINTENDO_WII_PRO) {
+        return SDL_TRUE;
+    }
+    if (vendor_id == USB_VENDOR_NINTENDO && product_id == USB_PRODUCT_NINTENDO_WII_REMOTE) {
+        /* Technically can be supported, but we don't interpret inputs yet */
+        return SDL_FALSE;
+    }
+    return SDL_FALSE;
+}
+
+static const char *
+HIDAPI_DriverWii_GetDeviceName(const char *name, Uint16 vendor_id, Uint16 product_id)
+{
+    return NULL;
+}
+
+static int ReadInput(SDL_DriverWii_Context *ctx)
+{
+    /* Make sure we don't try to read at the same time a write is happening */
+    if (SDL_AtomicGet(&ctx->device->rumble_pending) > 0) {
+        return 0;
+    }
+
+    return SDL_hid_read_timeout(ctx->device->dev, ctx->m_rgucReadBuffer, sizeof(ctx->m_rgucReadBuffer), 0);
+}
+
+static int WriteOutput(SDL_DriverWii_Context *ctx, const Uint8 *data, int size, SDL_bool sync)
+{
+    if (sync) {
+        return SDL_hid_write(ctx->device->dev, data, size);
+    } else {
+        /* Use the rumble thread for general asynchronous writes */
+        if (SDL_HIDAPI_LockRumble() < 0) {
+            return -1;
+        }
+        return SDL_HIDAPI_SendRumbleAndUnlock(ctx->device, data, size);
+    }
+}
+
+static SDL_bool ReadInputSync(SDL_DriverWii_Context *ctx, EWiiInputReportIDs expectedID, SDL_bool(*isMine)(const Uint8 *))
+{
+    Uint32 TimeoutMs = 100;
+    Uint32 startTicks = SDL_GetTicks();
+
+    int nRead = 0;
+    while ((nRead = ReadInput(ctx)) != -1) {
+        if (nRead > 0) {
+            if (ctx->m_rgucReadBuffer[0] == expectedID && (!isMine || isMine(ctx->m_rgucReadBuffer))) {
+                return SDL_TRUE;
+            }
+        } else {
+            if (SDL_TICKS_PASSED(SDL_GetTicks(), startTicks + TimeoutMs)) {
+                break;
+            }
+            SDL_Delay(1);
+        }
+    }
+    SDL_SetError("Read timed out");
+    return SDL_FALSE;
+}
+
+static SDL_bool IsWriteMemoryResponse(const Uint8 *data)
+{
+    return data[3] == k_eWiiOutputReportIDs_WriteMemory;
+}
+
+static SDL_bool WriteRegister(SDL_DriverWii_Context *ctx, Uint32 address, const Uint8 *data, int size, SDL_bool sync)
+{
+    Uint8 writeRequest[k_unWiiPacketDataLength] = {
+        k_eWiiOutputReportIDs_WriteMemory,
+        0x04 | ctx->m_bRumbleActive,
+        (address >> 16) & 0xff,
+        (address >> 8) & 0xff,
+        address & 0xff,
+        size
+    };
+    SDL_assert(size > 0 && size <= 16);
+    SDL_memcpy(writeRequest + 6, data, size);
+
+    if (!WriteOutput(ctx, writeRequest, sizeof(writeRequest), sync)) {
+        return SDL_FALSE;
+    }
+    if (sync) {
+        /* Wait for response */
+        if (!ReadInputSync(ctx, k_eWiiInputReportIDs_Acknowledge, IsWriteMemoryResponse)) {
+            return SDL_FALSE;
+        }
+        if (ctx->m_rgucReadBuffer[4]) {
+            SDL_SetError("Write memory failed: %d", ctx->m_rgucReadBuffer[4]);
+            return SDL_FALSE;
+        }
+    }
+    return SDL_TRUE;
+}
+
+static SDL_bool ReadRegister(SDL_DriverWii_Context *ctx, Uint32 address, int size, SDL_bool sync)
+{
+    Uint8 readRequest[7] = {
+        k_eWiiOutputReportIDs_ReadMemory,
+        0x04 | ctx->m_bRumbleActive,
+        (address >> 16) & 0xff,
+        (address >> 8) & 0xff,
+        address & 0xff,
+        (size >> 8) & 0xff,
+        size & 0xff
+    };
+    SDL_assert(size > 0 && size <= 0xffff);
+
+    if (!WriteOutput(ctx, readRequest, sizeof(readRequest), sync)) {
+        return SDL_FALSE;
+    }
+    if (sync) {
+        SDL_assert(size <= 16); /* Only waiting for one packet is supported right now */
+        /* Wait for response */
+        if (!ReadInputSync(ctx, k_eWiiInputReportIDs_ReadMemory, NULL)) {
+            return SDL_FALSE;
+        }
+    }
+    return SDL_TRUE;
+}
+
+static SDL_bool ParseExtensionResponse(SDL_DriverWii_Context *ctx)
+{
+    Uint64 type = 0;
+    SDL_assert(ctx->m_rgucReadBuffer[0] == k_eWiiInputReportIDs_ReadMemory);
+    if (ctx->m_rgucReadBuffer[4] != 0x00 || ctx->m_rgucReadBuffer[5] != 0xFA) {
+        SDL_SetError("Unexpected extension response address");
+        return SDL_FALSE;
+    }
+    if (ctx->m_rgucReadBuffer[3] != 0x50) {
+        if (ctx->m_rgucReadBuffer[3] & 0xF) {
+            SDL_SetError("Failed to read extension type: %d", ctx->m_rgucReadBuffer[3] & 0xF);
+        } else {
+            SDL_SetError("Unexpected read length when reading extension type: %d", (ctx->m_rgucReadBuffer[3] >> 4) + 1);
+        }
+        return SDL_FALSE;
+    }
+
+    for (int i = 6; i < 12; i++) {
+        type = type << 8 | ctx->m_rgucReadBuffer[i];
+    }
+    switch (type) {
+        case 0x0000A4200000: ctx->m_eExtensionControllerType = k_eWiiExtensionControllerType_Nunchuck; break;
+        case 0x0000A4200101: ctx->m_eExtensionControllerType = k_eWiiExtensionControllerType_ClassicController; break;
+        case 0x0100A4200101: ctx->m_eExtensionControllerType = k_eWiiExtensionControllerType_ClassicControllerPro; break;
+        case 0x0000A4200120: ctx->m_eExtensionControllerType = k_eWiiExtensionControllerType_WiiUPro; break;
+        default:
+            ctx->m_eExtensionControllerType = k_eWiiExtensionControllerType_Unknown;
+            SDL_SetError("Unrecognized controller type: %012" SDL_PRIx64, type);
+            return SDL_FALSE;
+    }
+    return SDL_TRUE;
+}
+
+
+static void UpdatePowerLevelWii(SDL_Joystick *joystick, Uint8 batteryLevelByte)
+{
+    if (batteryLevelByte > 178) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_FULL;
+    } else if (batteryLevelByte > 51) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_MEDIUM;
+    } else if (batteryLevelByte > 13) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_LOW;
+    } else {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_EMPTY;
+    }
+}
+
+static void UpdatePowerLevelWiiU(SDL_Joystick *joystick, Uint8 extensionBatteryByte)
+{
+    SDL_bool charging  = extensionBatteryByte & 0x08 ? SDL_FALSE : SDL_TRUE;
+    SDL_bool pluggedIn = extensionBatteryByte & 0x04 ? SDL_FALSE : SDL_TRUE;
+    Uint8 batteryLevel = extensionBatteryByte >> 4;
+
+    /* Not sure if all Wii U Pro controllers act like this, but on mine
+     * 4, 3, and 2 are held for about 20 hours each
+     * 1 is held for about 6 hours
+     * 0 is held for about 2 hours
+     * No value above 4 has been observed.
+     */
+    if (pluggedIn && !charging) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED;
+    } else if (batteryLevel >= 4) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_FULL;
+    } else if (batteryLevel > 1) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_MEDIUM;
+    } else if (batteryLevel == 1) {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_LOW;
+    } else {
+        joystick->epowerlevel = SDL_JOYSTICK_POWER_EMPTY;
+    }
+}
+
+static SDL_bool IdentifyController(SDL_DriverWii_Context *ctx, SDL_Joystick *joystick)
+{
+    static const Uint8 statusRequest[2] = { k_eWiiOutputReportIDs_StatusRequest, 0 };
+    SDL_bool hasExtension;
+    WriteOutput(ctx, statusRequest, sizeof(statusRequest), SDL_TRUE);
+    if (!ReadInputSync(ctx, k_eWiiInputReportIDs_Status, NULL)) {
+        return SDL_FALSE;
+    }
+    UpdatePowerLevelWii(joystick, ctx->m_rgucReadBuffer[6]);
+    hasExtension = ctx->m_rgucReadBuffer[3] & 2 ? SDL_TRUE : SDL_FALSE;
+    if (hasExtension) {
+        /* http://wiibrew.org/wiki/Wiimote/Extension_Controllers#The_New_Way */
+        SDL_bool ok = WriteRegister(ctx, 0xA400F0, (Uint8[1]){0x55}, 1, SDL_TRUE)
+                   && WriteRegister(ctx, 0xA400FB, (Uint8[1]){0x00}, 1, SDL_TRUE)
+                   && ReadRegister(ctx, 0xA400FA, 6, SDL_TRUE)
+                   && ParseExtensionResponse(ctx);
+        if (!ok) { return SDL_FALSE; }
+    } else {
+        ctx->m_eExtensionControllerType = k_eWiiExtensionControllerType_None;
+    }
+    return SDL_TRUE;
+}
+
+static EWiiInputReportIDs GetButtonPacketType(SDL_DriverWii_Context *ctx)
+{
+    switch (ctx->m_eExtensionControllerType) {
+        case k_eWiiExtensionControllerType_WiiUPro:
+            return k_eWiiInputReportIDs_ButtonDataD;
+        case k_eWiiExtensionControllerType_Nunchuck:
+        case k_eWiiExtensionControllerType_ClassicController:
+        case k_eWiiExtensionControllerType_ClassicControllerPro:
+            return k_eWiiInputReportIDs_ButtonData2;
+        default:
+            return k_eWiiInputReportIDs_ButtonData0;
+    }
+}
+
+static SDL_bool RequestButtonPacketType(SDL_DriverWii_Context *ctx, EWiiInputReportIDs type)
+{
+    Uint8 tt = ctx->m_bRumbleActive;
+    /* Continuous reporting off, tt & 4 == 0 */
+    return WriteOutput(ctx, (Uint8[3]){ k_eWiiOutputReportIDs_DataReportingMode, tt, type }, 3, SDL_FALSE);
+}
+
+static void InitStickCalibrationData(SDL_DriverWii_Context *ctx)
+{
+    switch (ctx->m_eExtensionControllerType) {
+        case k_eWiiExtensionControllerType_WiiUPro:
+            for (int i = 0; i < 4; i++) {
+                ctx->m_StickCalibrationData[i].min = 1000;
+                ctx->m_StickCalibrationData[i].max = 3000;
+                ctx->m_StickCalibrationData[i].center = 0;
+                ctx->m_StickCalibrationData[i].deadzone = 100;
+            }
+            break;
+        case k_eWiiExtensionControllerType_ClassicController:
+        case k_eWiiExtensionControllerType_ClassicControllerPro:
+            for (int i = 0; i < 4; i++) {
+                ctx->m_StickCalibrationData[i].min = 0;
+                ctx->m_StickCalibrationData[i].max = i < 2 ? 63 : 31;
+                ctx->m_StickCalibrationData[i].center = 0;
+                ctx->m_StickCalibrationData[i].deadzone = i < 2 ? 4 : 2;
+            }
+            break;
+        case k_eWiiExtensionControllerType_Nunchuck:
+            for (int i = 0; i < 2; i++) {
+                ctx->m_StickCalibrationData[i].min = 0;
+                ctx->m_StickCalibrationData[i].max = 255;
+                ctx->m_StickCalibrationData[i].center = 0;
+                ctx->m_StickCalibrationData[i].deadzone = 10;
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+static const char* GetNameFromExtensionInfo(SDL_DriverWii_Context *ctx)
+{
+    switch (ctx->m_eExtensionControllerType) {
+        case k_eWiiExtensionControllerType_None:                 return "Nintendo Wii Remote";
+        case k_eWiiExtensionControllerType_Nunchuck:             return "Nintendo Wii Remote with Nunchuck";
+        case k_eWiiExtensionControllerType_ClassicController:    return "Nintendo Wii Remote with Classic Controller";
+        case k_eWiiExtensionControllerType_ClassicControllerPro: return "Nintendo Wii Remote with Classic Controller Pro";
+        case k_eWiiExtensionControllerType_WiiUPro:              return "Nintendo Wii U Pro Controller";
+        default:                                                 return "Nintendo Wii Remote with Unknown Extension";
+    }
+}
+
+static void SDLCALL SDL_GameControllerButtonReportingHintChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
+{
+    SDL_DriverWii_Context *ctx = (SDL_DriverWii_Context *)userdata;
+    ctx->m_bUseButtonLabels = SDL_GetStringBoolean(hint, SDL_TRUE);
+}
+
+static Uint8 RemapButton(SDL_DriverWii_Context *ctx, Uint8 button)
+{
+    if (!ctx->m_bUseButtonLabels) {
+        switch (button) {
+            case SDL_CONTROLLER_BUTTON_A:
+                return SDL_CONTROLLER_BUTTON_B;
+            case SDL_CONTROLLER_BUTTON_B:
+                return SDL_CONTROLLER_BUTTON_A;
+            case SDL_CONTROLLER_BUTTON_X:
+                return SDL_CONTROLLER_BUTTON_Y;
+            case SDL_CONTROLLER_BUTTON_Y:
+                return SDL_CONTROLLER_BUTTON_X;
+            default:
+                break;
+        }
+    }
+    return button;
+}
+
+static SDL_bool
+HIDAPI_DriverWii_InitDevice(SDL_HIDAPI_Device *device)
+{
+    return HIDAPI_JoystickConnected(device, NULL);
+}
+
+static int
+HIDAPI_DriverWii_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id)
+{
+    if (device->context) {
+        return ((SDL_DriverWii_Context *)device->context)->m_playerIndex;
+    }
+    return -1;
+}
+
+static void
+HIDAPI_DriverWii_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index)
+{
+    SDL_DriverWii_Context *ctx = device->context;
+    Uint8 leds;
+    Uint8 data[2];
+
+    if (!ctx) {
+        return;
+    }
+
+    ctx->m_playerIndex = player_index;
+
+    leds = ctx->m_bRumbleActive;
+    /* Use the same LED codes as Smash 8-player for 5-7 */
+    if (player_index == 1 || player_index > 4) {
+        leds |= k_eWiiPlayerLEDs_P1;
+    }
+    if (player_index == 2 || player_index == 5) {
+        leds |= k_eWiiPlayerLEDs_P2;
+    }
+    if (player_index == 3 || player_index == 6) {
+        leds |= k_eWiiPlayerLEDs_P3;
+    }
+    if (player_index == 4 || player_index == 7) {
+        leds |= k_eWiiPlayerLEDs_P4;
+    }
+    /* Turn on all lights for other player indexes */
+    if (player_index < 1 || player_index > 7) {
+        leds |= k_eWiiPlayerLEDs_P1 | k_eWiiPlayerLEDs_P2 | k_eWiiPlayerLEDs_P3 | k_eWiiPlayerLEDs_P4;
+    }
+
+    data[0] = k_eWiiOutputReportIDs_LEDs;
+    data[1] = leds;
+    WriteOutput(ctx, data, sizeof(data), SDL_FALSE);
+}
+
+static SDL_bool
+HIDAPI_DriverWii_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
+{
+    SDL_DriverWii_Context *ctx;
+
+    ctx = (SDL_DriverWii_Context *)SDL_calloc(1, sizeof(*ctx));
+    if (!ctx) {
+        SDL_OutOfMemory();
+        goto error;
+    }
+    ctx->device = device;
+    device->context = ctx;
+
+    device->dev = SDL_hid_open_path(device->path, 0);
+    if (!device->dev) {
+        SDL_SetError("Couldn't open %s", device->path);
+        goto error;
+    }
+
+    SDL_AddHintCallback(SDL_HINT_GAMECONTROLLER_USE_BUTTON_LABELS,
+                        SDL_GameControllerButtonReportingHintChanged, ctx);
+
+    if (!IdentifyController(ctx, joystick)) {
+        char msg[512];
+        SDL_GetErrorMsg(msg, sizeof(msg) - 1);
+        SDL_SetError("Couldn't read device info: %s", msg);
+        goto error;
+    }
+
+    InitStickCalibrationData(ctx);
+    SDL_free(device->name);
+    device->name = SDL_strdup(GetNameFromExtensionInfo(ctx));
+
+    /* Initialize the joystick capabilities */
+    if (ctx->m_eExtensionControllerType == k_eWiiExtensionControllerType_WiiUPro) {
+        joystick->nbuttons = 15;
+    } else {
+        /* Maximum is Classic Controller + Wiimote */
+        joystick->nbuttons = 25;
+    }
+    joystick->naxes = SDL_CONTROLLER_AXIS_MAX;
+
+    HIDAPI_DriverWii_SetDevicePlayerIndex(device, 0, SDL_JoystickGetPlayerIndex(joystick));
+    RequestButtonPacketType(ctx, GetButtonPacketType(ctx));
+
+    return SDL_TRUE;
+
+error:
+    SDL_LockMutex(device->dev_lock);
+    {
+        if (device->dev) {
+            SDL_hid_close(device->dev);
+            device->dev = NULL;
+        }
+        if (device->context) {
+            SDL_free(device->context);
+            device->context = NULL;
+        }
+    }
+    SDL_UnlockMutex(device->dev_lock);
+    return SDL_FALSE;
+}
+
+static int
+HIDAPI_DriverWii_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
+{
+    SDL_DriverWii_Context *ctx = (SDL_DriverWii_Context *)device->context;
+    SDL_bool active = (low_frequency_rumble || high_frequency_rumble) ? SDL_TRUE : SDL_FALSE;
+
+    if (active != ctx->m_bRumbleActive) {
+        Uint8 data[2];
+
+        data[0] = k_eWiiOutputReportIDs_Rumble;
+        data[1] = active;
+        WriteOutput(ctx, data, sizeof(data), SDL_FALSE);
+
+        ctx->m_bRumbleActive = active;
+    }
+    return 0;
+}
+
+static int
+HIDAPI_DriverWii_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
+{
+    return SDL_Unsupported();
+}
+
+static Uint32
+HIDAPI_DriverWii_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
+{
+    return SDL_JOYCAP_RUMBLE;
+}
+
+static int
+HIDAPI_DriverWii_SetJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
+{
+    return SDL_Unsupported();
+}
+
+static int
+HIDAPI_DriverWii_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, const void *data, int size)
+{
+    return SDL_Unsupported();
+}
+
+static int
+HIDAPI_DriverWii_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, SDL_bool enabled)
+{
+    /* TODO: Implement Sensors */
+    return SDL_Unsupported();
+}
+
+static void PostStickCalibrated(SDL_Joystick *joystick, struct StickCalibrationData *calibration, Uint8 axis, Uint16 data)
+{
+    Sint16 value = 0;
+    if (!calibration->center) {
+        /* Center on first read */
+        calibration->center = data;
+        return;
+    }
+    if (data < calibration->min) {
+        calibration->min = data;
+    }
+    if (data > calibration->max) {
+        calibration->max = data;
+    }
+    if (data < calibration->center - calibration->deadzone) {
+        Uint16 zero = calibration->center - calibration->deadzone;
+        Uint16 range = zero - calibration->min;
+        Uint16 distance = zero - data;
+        float fvalue = (float)distance / (float)range;
+        value = (Sint16)(fvalue * SDL_MIN_SINT16);
+    } else if (data > calibration->center + calibration->deadzone) {
+        Uint16 zero = calibration->center + calibration->deadzone;
+        Uint16 range = calibration->max - zero;
+        Uint16 distance = data - zero;
+        float fvalue = (float)distance / (float)range;
+        value = (Sint16)(fvalue * SDL_MAX_SINT16);
+    }
+    SDL_PrivateJoystickAxis(joystick, axis, value);
+}
+
+static void HandleWiiUProButtonData(SDL_DriverWii_Context *ctx, SDL_Joystick *joystick, WiiButtonData data)
+{
+    static const Uint8 axes[] = { SDL_CONTROLLER_AXIS_LEFTX, SDL_CONTROLLER_AXIS_RIGHTX, SDL_CONTROLLER_AXIS_LEFTY, SDL_CONTROLLER_AXIS_RIGHTY };
+    static const Uint8 buttons[3][8] = {
+        {
+            0xFF /* Unused */,                SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, SDL_CONTROLLER_BUTTON_START,     SDL_CONTROLLER_BUTTON_GUIDE,
+            SDL_CONTROLLER_BUTTON_BACK,       SDL_CONTROLLER_BUTTON_LEFTSHOULDER,  SDL_CONTROLLER_BUTTON_DPAD_DOWN, SDL_CONTROLLER_BUTTON_DPAD_RIGHT,
+        }, {
+            SDL_CONTROLLER_BUTTON_DPAD_UP,    SDL_CONTROLLER_BUTTON_DPAD_LEFT,     0xFF /* ZR */,                   SDL_CONTROLLER_BUTTON_X,
+            SDL_CONTROLLER_BUTTON_A,          SDL_CONTROLLER_BUTTON_Y,             SDL_CONTROLLER_BUTTON_B,         0xFF /*ZL*/,
+        }, {
+            SDL_CONTROLLER_BUTTON_RIGHTSTICK, SDL_CONTROLLER_BUTTON_LEFTSTICK,     0xFF /* Charging */,             0xFF /* Plugged In */,
+            0xFF /* Unused */,                0xFF /* Unused */,                   0xFF /* Unused */,               0xFF /* Unused */,
+        }
+    };
+    Uint8 zl, zr;
+    if (data.ucNExtensionBytes < 11) {
+        return;
+    }
+
+    /* Sticks */
+    for (int i = 0; i < 4; i++) {
+        Uint16 value = data.rgucExtension[i * 2] | (data.rgucExtension[i * 2 + 1] << 8);
+        PostStickCalibrated(joystick, &ctx->m_StickCalibrationData[i], axes[i], value);
+    }
+
+    /* Buttons */
+    for (int i = 0; i < 3; i++) {
+        for (int j = 0; j < 8; j++) {
+            Uint8 button = buttons[i][j];
+            if (button != 0xFF) {
+                SDL_bool state = (data.rgucExtension[8 + i] >> j) & 1 ? SDL_RELEASED : SDL_PRESSED;
+                SDL_PrivateJoystickButton(joystick, RemapButton(ctx, button), state);
+            }
+        }
+    }
+
+    /* Triggers */
+    zl = data.rgucExtension[9] & 0x80;
+    zr = data.rgucExtension[9] & 0x04;
+    SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT,  zl ? SDL_MIN_SINT16 : SDL_MAX_SINT16);
+    SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, zr ? SDL_MIN_SINT16 : SDL_MAX_SINT16);
+
+    /* Power */
+    UpdatePowerLevelWiiU(joystick, data.rgucExtension[10]);
+}
+
+static void HandleButtonData(SDL_DriverWii_Context *ctx, SDL_Joystick *joystick, WiiButtonData data)
+{
+    if (ctx->m_eExtensionControllerType == k_eWiiExtensionControllerType_WiiUPro) {
+        HandleWiiUProButtonData(ctx, joystick, data);
+    }
+}
+
+static void GetBaseButtons(WiiButtonData *dst, const Uint8 *src)
+{
+    SDL_memcpy(dst->rgucBaseButtons, src, 2);
+    dst->hasBaseButtons = SDL_TRUE;
+}
+
+static void GetAccelerometer(WiiButtonData *dst, const Uint8 *src)
+{
+    SDL_memcpy(dst->rgucAccelerometer, src, 3);
+    dst->hasAccelerometer = SDL_TRUE;
+}
+
+static void GetExtensionData(WiiButtonData *dst, const Uint8 *src, int size)
+{
+    SDL_assert(size > 0 && size <= sizeof(dst->rgucExtension));
+    SDL_memcpy(dst->rgucExtension, src, size);
+    dst->ucNExtensionBytes = size;
+}
+
+static void HandleStatus(SDL_DriverWii_Context *ctx, SDL_Joystick *joystick)
+{
+    WiiButtonData data;
+    SDL_zero(data);
+    GetBaseButtons(&data, ctx->m_rgucReadBuffer + 1);
+    HandleButtonData(ctx, joystick, data);
+    if (ctx->m_eExtensionControllerType != k_eWiiExtensionControllerType_WiiUPro) {
+        /* Wii U has separate battery level tracking */
+        UpdatePowerLevelWii(joystick, ctx->m_rgucReadBuffer[6]);
+    }
+    /* TODO: Check Extensions */
+}
+
+static void HandleResponse(SDL_DriverWii_Context *ctx)
+{
+}
+
+static void HandleButtonPacket(SDL_DriverWii_Context *ctx, SDL_Joystick *joystick)
+{
+    WiiButtonData data;
+    SDL_zero(data);
+    /* IR camera data is not supported */
+    switch (ctx->m_rgucReadBuffer[0]) {
+        case k_eWiiInputReportIDs_ButtonData0: /* 30 BB BB */
+            GetBaseButtons(&data, ctx->m_rgucReadBuffer + 1);
+            break;
+        case k_eWiiInputReportIDs_ButtonData1: /* 31 BB BB AA AA AA */
+        case k_eWiiInputReportIDs_ButtonData3: /* 33 BB BB AA AA AA II II II II II II II II II II II II */
+            GetBaseButtons  (&data, ctx->m_rgucReadBuffer + 1);
+            GetAccelerometer(&data, ctx->m_rgucReadBuffer + 3);
+            break;
+        case k_eWiiInputReportIDs_ButtonData2: /* 32 BB BB EE EE EE EE EE EE EE EE */
+            GetBaseButtons  (&data, ctx->m_rgucReadBuffer + 1);
+            GetExtensionData(&data, ctx->m_rgucReadBuffer + 3, 8);
+            break;
+        case k_eWiiInputReportIDs_ButtonData4: /* 34 BB BB EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE */
+            GetBaseButtons  (&data, ctx->m_rgucReadBuffer + 1);
+            GetExtensionData(&data, ctx->m_rgucReadBuffer + 3, 19);
+            break;
+        case k_eWiiInputReportIDs_ButtonData5: /* 35 BB BB AA AA AA EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE */
+            GetBaseButtons  (&data, ctx->m_rgucReadBuffer + 1);
+            GetAccelerometer(&data, ctx->m_rgucReadBuffer + 3);
+            GetExtensionData(&data, ctx->m_rgucReadBuffer + 6, 16);
+            break;
+        case k_eWiiInputReportIDs_ButtonData6: /* 36 BB BB II II II II II II II II II II EE EE EE EE EE EE EE EE EE */
+            GetBaseButtons  (&data, ctx->m_rgucReadBuffer + 1);
+            GetExtensionData(&data, ctx->m_rgucReadBuffer + 13, 9);
+            break;
+        case k_eWiiInputReportIDs_ButtonData7: /* 37 BB BB AA AA AA II II II II II II II II II II EE EE EE EE EE EE */
+            GetBaseButtons  (&data, ctx->m_rgucReadBuffer + 1);
+            GetExtensionData(&data, ctx->m_rgucReadBuffer + 16, 6);
+            break;
+        case k_eWiiInputReportIDs_ButtonDataD: /* 3d EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE EE */
+            GetExtensionData(&data, ctx->m_rgucReadBuffer + 1, 21);
+            break;
+        case k_eWiiInputReportIDs_ButtonDataE:
+        case k_eWiiInputReportIDs_ButtonDataF:
+        default:
+            SDL_LogDebug(SDL_LOG_CATEGORY_INPUT, "HIDAPI WII: Unsupported button data type %02x", ctx->m_rgucReadBuffer[0]);
+            return;
+    }
+    HandleButtonData(ctx, joystick, data);
+}
+
+static void HandleInput(SDL_DriverWii_Context *ctx, SDL_Joystick *joystick)
+{
+    EWiiInputReportIDs type = ctx->m_rgucReadBuffer[0];
+    if (type == k_eWiiInputReportIDs_Status) {
+        HandleStatus(ctx, joystick);
+    } else if (type == k_eWiiInputReportIDs_Acknowledge || type == k_eWiiInputReportIDs_ReadMemory) {
+        HandleResponse(ctx);
+    } else if (type >= k_eWiiInputReportIDs_ButtonData0 && type <= k_eWiiInputReportIDs_ButtonDataF) {
+        HandleButtonPacket(ctx, joystick);
+    } else {
+        SDL_LogDebug(SDL_LOG_CATEGORY_INPUT, "HIDAPI WII: Unexpected input packet of type %x", type);
+    }
+}
+
+static const Uint32 FIFTEEN_MINUTES_IN_MS = 15 * 60 * 1000;
+
+static SDL_bool
+HIDAPI_DriverWii_UpdateDevice(SDL_HIDAPI_Device *device)
+{
+    SDL_DriverWii_Context *ctx = (SDL_DriverWii_Context *)device->context;
+    SDL_Joystick *joystick = NULL;
+    int size;
+
+    if (device->num_joysticks > 0) {
+        joystick = SDL_JoystickFromInstanceID(device->joysticks[0]);
+    }
+    if (!joystick) {
+        return SDL_FALSE;
+    }
+
+    while ((size = ReadInput(ctx)) > 0) {
+#ifdef DEBUG_WII_PROTOCOL
+        HIDAPI_DumpPacket("Wii packet: size = %d", ctx->m_rgucReadBuffer, size);
+#endif
+        HandleInput(ctx, joystick);
+    }
+
+    /* Request a status update periodically to make sure our battery value is up to date */
+    if (SDL_TICKS_PASSED(SDL_GetTicks(), ctx->m_iLastStatus + FIFTEEN_MINUTES_IN_MS)) {
+        ctx->m_iLastStatus = SDL_GetTicks();
+        WriteOutput(ctx, (Uint8[2]){ k_eWiiOutputReportIDs_StatusRequest, ctx->m_bRumbleActive }, 2, SDL_FALSE);
+    }
+
+    if (size < 0) {
+        /* Read error, device is disconnected */
+        HIDAPI_JoystickDisconnected(device, joystick->instance_id);
+    }
+    return (size >= 0);
+}
+
+static void
+HIDAPI_DriverWii_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
+{
+    SDL_DriverWii_Context *ctx = (SDL_DriverWii_Context *)device->context;
+
+    SDL_DelHintCallback(SDL_HINT_GAMECONTROLLER_USE_BUTTON_LABELS,
+                        SDL_GameControllerButtonReportingHintChanged, ctx);
+
+    SDL_LockMutex(device->dev_lock);
+    {
+        SDL_hid_close(device->dev);
+        device->dev = NULL;
+
+        SDL_free(device->context);
+        device->context = NULL;
+    }
+    SDL_UnlockMutex(device->dev_lock);
+}
+
+static void
+HIDAPI_DriverWii_FreeDevice(SDL_HIDAPI_Device *device)
+{
+}
+
+SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverWii =
+{
+    SDL_HINT_JOYSTICK_HIDAPI_WII,
+    SDL_TRUE,
+    HIDAPI_DriverWii_RegisterHints,
+    HIDAPI_DriverWii_UnregisterHints,
+    HIDAPI_DriverWii_IsEnabled,
+    HIDAPI_DriverWii_IsSupportedDevice,
+    HIDAPI_DriverWii_GetDeviceName,
+    HIDAPI_DriverWii_InitDevice,
+    HIDAPI_DriverWii_GetDevicePlayerIndex,
+    HIDAPI_DriverWii_SetDevicePlayerIndex,
+    HIDAPI_DriverWii_UpdateDevice,
+    HIDAPI_DriverWii_OpenJoystick,
+    HIDAPI_DriverWii_RumbleJoystick,
+    HIDAPI_DriverWii_RumbleJoystickTriggers,
+    HIDAPI_DriverWii_GetJoystickCapabilities,
+    HIDAPI_DriverWii_SetJoystickLED,
+    HIDAPI_DriverWii_SendJoystickEffect,
+    HIDAPI_DriverWii_SetJoystickSensorsEnabled,
+    HIDAPI_DriverWii_CloseJoystick,
+    HIDAPI_DriverWii_FreeDevice,
+};
+
+#endif /* SDL_JOYSTICK_HIDAPI_WII */
+
+#endif /* SDL_JOYSTICK_HIDAPI */
+
+/* vi: set ts=4 sw=4 expandtab: */

src/joystick/hidapi/SDL_hidapijoystick.c

@@ -75,6 +75,9 @@ static SDL_HIDAPI_DeviceDriver *SDL_HIDAPI_drivers[] = {
     &SDL_HIDAPI_DriverJoyCons,
     &SDL_HIDAPI_DriverSwitch,
 #endif
+#ifdef SDL_JOYSTICK_HIDAPI_WII
+    &SDL_HIDAPI_DriverWii,
+#endif
 #ifdef SDL_JOYSTICK_HIDAPI_XBOX360
     &SDL_HIDAPI_DriverXbox360,
     &SDL_HIDAPI_DriverXbox360W,

src/joystick/hidapi/SDL_hidapijoystick_c.h

@@ -39,6 +39,7 @@
 #define SDL_JOYSTICK_HIDAPI_PS5
 #define SDL_JOYSTICK_HIDAPI_STADIA
 #define SDL_JOYSTICK_HIDAPI_SWITCH
+#define SDL_JOYSTICK_HIDAPI_WII
 #define SDL_JOYSTICK_HIDAPI_XBOX360
 #define SDL_JOYSTICK_HIDAPI_XBOXONE
 #define SDL_JOYSTICK_HIDAPI_SHIELD
@@ -133,6 +134,7 @@ extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverShield;
 extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverStadia;
 extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverSteam;
 extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverSwitch;
+extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverWii;
 extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverXbox360;
 extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverXbox360W;
 extern SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverXboxOne;

src/joystick/usb_ids.h

@@ -56,6 +56,8 @@
 #define USB_PRODUCT_NINTENDO_SWITCH_JOYCON_PAIR             0x2008  /* Used by joycond */
 #define USB_PRODUCT_NINTENDO_SWITCH_JOYCON_RIGHT            0x2007
 #define USB_PRODUCT_NINTENDO_SWITCH_PRO                     0x2009
+#define USB_PRODUCT_NINTENDO_WII_PRO                        0x0330
+#define USB_PRODUCT_NINTENDO_WII_REMOTE                     0x0306
 #define USB_PRODUCT_NVIDIA_SHIELD_CONTROLLER                0x7214
 #define USB_PRODUCT_RAZER_PANTHERA                          0x0401
 #define USB_PRODUCT_RAZER_PANTHERA_EVO                      0x1008