LUFA/Drivers/USB/Class/Host/AndroidAccessoryClassHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2013.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2013  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaims all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #define  __INCLUDE_FROM_USB_DRIVER
  32 #include "../../Core/USBMode.h"
  33
  34 #if defined(USB_CAN_BE_HOST)
  35
  36 #define  __INCLUDE_FROM_AOA_DRIVER
  37 #define  __INCLUDE_FROM_ANDROIDACCESSORY_HOST_C
  38 #include "AndroidAccessoryClassHost.h"
  39
  40 bool AOA_Host_ValidateAccessoryDevice(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
  41                                       const USB_Descriptor_Device_t* const DeviceDescriptor,
  42                                       bool* const NeedModeSwitch)
  43 {
  44         (void)AOAInterfaceInfo;
  45
  46         if (DeviceDescriptor->Header.Type != DTYPE_Device)
  47           return false;
  48
  49         *NeedModeSwitch = ((DeviceDescriptor->ProductID != ANDROID_ACCESSORY_PRODUCT_ID) &&
  50                            (DeviceDescriptor->ProductID != ANDROID_ACCESSORY_ADB_PRODUCT_ID));
  51
  52         return true;
  53 }
  54
  55 uint8_t AOA_Host_ConfigurePipes(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
  56                                 uint16_t ConfigDescriptorSize,
  57                                 void* ConfigDescriptorData)
  58 {
  59         USB_Descriptor_Endpoint_t*  DataINEndpoint  = NULL;
  60         USB_Descriptor_Endpoint_t*  DataOUTEndpoint = NULL;
  61         USB_Descriptor_Interface_t* AOAInterface    = NULL;
  62
  63         memset(&AOAInterfaceInfo->State, 0x00, sizeof(AOAInterfaceInfo->State));
  64
  65         if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
  66           return AOA_ENUMERROR_InvalidConfigDescriptor;
  67
  68         if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  69                                       DCOMP_AOA_Host_NextAndroidAccessoryInterface) != DESCRIPTOR_SEARCH_COMP_Found)
  70         {
  71                 return AOA_ENUMERROR_NoCompatibleInterfaceFound;
  72         }
  73
  74         AOAInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
  75
  76         while (!(DataINEndpoint) || !(DataOUTEndpoint))
  77         {
  78                 if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  79                                               DCOMP_AOA_Host_NextInterfaceBulkEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
  80                 {
  81                         return AOA_ENUMERROR_NoCompatibleInterfaceFound;
  82                 }
  83
  84                 USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
  85
  86                 if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
  87                   DataINEndpoint  = EndpointData;
  88                 else
  89                   DataOUTEndpoint = EndpointData;
  90         }
  91
  92         AOAInterfaceInfo->Config.DataINPipe.Size  = le16_to_cpu(DataINEndpoint->EndpointSize);
  93         AOAInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
  94         AOAInterfaceInfo->Config.DataINPipe.Type  = EP_TYPE_BULK;
  95
  96         AOAInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
  97         AOAInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
  98         AOAInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_BULK;
  99
 100         if (!(Pipe_ConfigurePipeTable(&AOAInterfaceInfo->Config.DataINPipe, 1)))
 101           return false;
 102
 103         if (!(Pipe_ConfigurePipeTable(&AOAInterfaceInfo->Config.DataOUTPipe, 1)))
 104           return false;
 105
 106         AOAInterfaceInfo->State.IsActive        = true;
 107         AOAInterfaceInfo->State.InterfaceNumber = AOAInterface->InterfaceNumber;
 108
 109         return AOA_ENUMERROR_NoError;
 110 }
 111
 112 static uint8_t DCOMP_AOA_Host_NextAndroidAccessoryInterface(void* const CurrentDescriptor)
 113 {
 114         USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
 115
 116         if (Header->Type == DTYPE_Interface)
 117         {
 118                 USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
 119
 120                 if ((Interface->Class    == AOA_CSCP_AOADataClass)    &&
 121                     (Interface->SubClass == AOA_CSCP_AOADataSubclass) &&
 122                     (Interface->Protocol == AOA_CSCP_AOADataProtocol))
 123                 {
 124                         return DESCRIPTOR_SEARCH_Found;
 125                 }
 126         }
 127
 128         return DESCRIPTOR_SEARCH_NotFound;
 129 }
 130
 131 static uint8_t DCOMP_AOA_Host_NextInterfaceBulkEndpoint(void* const CurrentDescriptor)
 132 {
 133         USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
 134
 135         if (Header->Type == DTYPE_Endpoint)
 136         {
 137                 USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
 138
 139                 uint8_t EndpointType = (Endpoint->Attributes & EP_TYPE_MASK);
 140
 141                 if ((EndpointType == EP_TYPE_BULK) && (!(Pipe_IsEndpointBound(Endpoint->EndpointAddress))))
 142                   return DESCRIPTOR_SEARCH_Found;
 143         }
 144         else if (Header->Type == DTYPE_Interface)
 145         {
 146                 return DESCRIPTOR_SEARCH_Fail;
 147         }
 148
 149         return DESCRIPTOR_SEARCH_NotFound;
 150 }
 151
 152 void AOA_Host_USBTask(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo)
 153 {
 154         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 155           return;
 156
 157         #if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
 158         AOA_Host_Flush(AOAInterfaceInfo);
 159         #endif
 160 }
 161
 162 uint8_t AOA_Host_StartAccessoryMode(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo)
 163 {
 164         uint8_t ErrorCode;
 165
 166         uint16_t AccessoryProtocol;
 167         if ((ErrorCode = AOA_Host_GetAccessoryProtocol(&AccessoryProtocol)) != HOST_WAITERROR_Successful)
 168           return ErrorCode;
 169
 170         if ((AccessoryProtocol != CPU_TO_LE16(AOA_PROTOCOL_AccessoryV1)) && (AccessoryProtocol != CPU_TO_LE16(AOA_PROTOCOL_AccessoryV2)))
 171           return AOA_ERROR_LOGICAL_CMD_FAILED;
 172
 173         for (uint8_t PropertyIndex = 0; PropertyIndex < AOA_STRING_TOTAL_STRINGS; PropertyIndex++)
 174         {
 175                 if ((ErrorCode = AOA_Host_SendPropertyString(AOAInterfaceInfo, PropertyIndex)) != HOST_WAITERROR_Successful)
 176                   return ErrorCode;
 177         }
 178
 179         USB_ControlRequest = (USB_Request_Header_t)
 180         {
 181                 .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE),
 182                 .bRequest      = AOA_REQ_StartAccessoryMode,
 183                 .wValue        = 0,
 184                 .wIndex        = 0,
 185                 .wLength       = 0,
 186         };
 187
 188         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 189         return USB_Host_SendControlRequest(NULL);
 190 }
 191
 192 static uint8_t AOA_Host_GetAccessoryProtocol(uint16_t* const Protocol)
 193 {
 194         USB_ControlRequest = (USB_Request_Header_t)
 195         {
 196                 .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_VENDOR | REQREC_DEVICE),
 197                 .bRequest      = AOA_REQ_GetAccessoryProtocol,
 198                 .wValue        = 0,
 199                 .wIndex        = 0,
 200                 .wLength       = sizeof(uint16_t),
 201         };
 202
 203         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 204         return USB_Host_SendControlRequest(Protocol);
 205 }
 206
 207 static uint8_t AOA_Host_SendPropertyString(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
 208                                            const uint8_t StringIndex)
 209 {
 210         const char* String = AOAInterfaceInfo->Config.PropertyStrings[StringIndex];
 211
 212         if (String == NULL)
 213           String = "";
 214
 215         USB_ControlRequest = (USB_Request_Header_t)
 216         {
 217                 .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE),
 218                 .bRequest      = AOA_REQ_SendString,
 219                 .wValue        = 0,
 220                 .wIndex        = StringIndex,
 221                 .wLength       = (strlen(String) + 1),
 222         };
 223
 224         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 225         return USB_Host_SendControlRequest((char*)String);
 226 }
 227
 228 uint8_t AOA_Host_SendData(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
 229                           const void* const Buffer,
 230                           const uint16_t Length)
 231 {
 232         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 233           return PIPE_READYWAIT_DeviceDisconnected;
 234
 235         uint8_t ErrorCode;
 236
 237         Pipe_SelectPipe(AOAInterfaceInfo->Config.DataOUTPipe.Address);
 238
 239         Pipe_Unfreeze();
 240         ErrorCode = Pipe_Write_Stream_LE(Buffer, Length, NULL);
 241         Pipe_Freeze();
 242
 243         return ErrorCode;
 244 }
 245
 246 uint8_t AOA_Host_SendString(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
 247                             const char* const String)
 248 {
 249         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 250           return PIPE_READYWAIT_DeviceDisconnected;
 251
 252         uint8_t ErrorCode;
 253
 254         Pipe_SelectPipe(AOAInterfaceInfo->Config.DataOUTPipe.Address);
 255
 256         Pipe_Unfreeze();
 257         ErrorCode = Pipe_Write_Stream_LE(String, strlen(String), NULL);
 258         Pipe_Freeze();
 259
 260         return ErrorCode;
 261 }
 262
 263 uint8_t AOA_Host_SendByte(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
 264                           const uint8_t Data)
 265 {
 266         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 267           return PIPE_READYWAIT_DeviceDisconnected;
 268
 269         uint8_t ErrorCode;
 270
 271         Pipe_SelectPipe(AOAInterfaceInfo->Config.DataOUTPipe.Address);
 272         Pipe_Unfreeze();
 273
 274         if (!(Pipe_IsReadWriteAllowed()))
 275         {
 276                 Pipe_ClearOUT();
 277
 278                 if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
 279                   return ErrorCode;
 280         }
 281
 282         Pipe_Write_8(Data);
 283         Pipe_Freeze();
 284
 285         return PIPE_READYWAIT_NoError;
 286 }
 287
 288 uint16_t AOA_Host_BytesReceived(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo)
 289 {
 290         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 291           return 0;
 292
 293         Pipe_SelectPipe(AOAInterfaceInfo->Config.DataINPipe.Address);
 294         Pipe_Unfreeze();
 295
 296         if (Pipe_IsINReceived())
 297         {
 298                 if (!(Pipe_BytesInPipe()))
 299                 {
 300                         Pipe_ClearIN();
 301                         Pipe_Freeze();
 302                         return 0;
 303                 }
 304                 else
 305                 {
 306                         Pipe_Freeze();
 307                         return Pipe_BytesInPipe();
 308                 }
 309         }
 310         else
 311         {
 312                 Pipe_Freeze();
 313
 314                 return 0;
 315         }
 316 }
 317
 318 int16_t AOA_Host_ReceiveByte(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo)
 319 {
 320         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 321           return -1;
 322
 323         int16_t ReceivedByte = -1;
 324
 325         Pipe_SelectPipe(AOAInterfaceInfo->Config.DataINPipe.Address);
 326         Pipe_Unfreeze();
 327
 328         if (Pipe_IsINReceived())
 329         {
 330                 if (Pipe_BytesInPipe())
 331                   ReceivedByte = Pipe_Read_8();
 332
 333                 if (!(Pipe_BytesInPipe()))
 334                   Pipe_ClearIN();
 335         }
 336
 337         Pipe_Freeze();
 338
 339         return ReceivedByte;
 340 }
 341
 342 uint8_t AOA_Host_Flush(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo)
 343 {
 344         if ((USB_HostState != HOST_STATE_Configured) || !(AOAInterfaceInfo->State.IsActive))
 345           return PIPE_READYWAIT_DeviceDisconnected;
 346
 347         uint8_t ErrorCode;
 348
 349         Pipe_SelectPipe(AOAInterfaceInfo->Config.DataOUTPipe.Address);
 350         Pipe_Unfreeze();
 351
 352         if (!(Pipe_BytesInPipe()))
 353           return PIPE_READYWAIT_NoError;
 354
 355         bool BankFull = !(Pipe_IsReadWriteAllowed());
 356
 357         Pipe_ClearOUT();
 358
 359         if (BankFull)
 360         {
 361                 if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
 362                   return ErrorCode;
 363
 364                 Pipe_ClearOUT();
 365         }
 366
 367         Pipe_Freeze();
 368
 369         return PIPE_READYWAIT_NoError;
 370 }
 371
 372 #if defined(FDEV_SETUP_STREAM)
 373 void AOA_Host_CreateStream(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
 374                            FILE* const Stream)
 375 {
 376         *Stream = (FILE)FDEV_SETUP_STREAM(AOA_Host_putchar, AOA_Host_getchar, _FDEV_SETUP_RW);
 377         fdev_set_udata(Stream, AOAInterfaceInfo);
 378 }
 379
 380 void AOA_Host_CreateBlockingStream(USB_ClassInfo_AOA_Host_t* const AOAInterfaceInfo,
 381                                    FILE* const Stream)
 382 {
 383         *Stream = (FILE)FDEV_SETUP_STREAM(AOA_Host_putchar, AOA_Host_getchar_Blocking, _FDEV_SETUP_RW);
 384         fdev_set_udata(Stream, AOAInterfaceInfo);
 385 }
 386
 387 static int AOA_Host_putchar(char c,
 388                             FILE* Stream)
 389 {
 390         return AOA_Host_SendByte((USB_ClassInfo_AOA_Host_t*)fdev_get_udata(Stream), c) ? _FDEV_ERR : 0;
 391 }
 392
 393 static int AOA_Host_getchar(FILE* Stream)
 394 {
 395         int16_t ReceivedByte = AOA_Host_ReceiveByte((USB_ClassInfo_AOA_Host_t*)fdev_get_udata(Stream));
 396
 397         if (ReceivedByte < 0)
 398           return _FDEV_EOF;
 399
 400         return ReceivedByte;
 401 }
 402
 403 static int AOA_Host_getchar_Blocking(FILE* Stream)
 404 {
 405         int16_t ReceivedByte;
 406
 407         while ((ReceivedByte = AOA_Host_ReceiveByte((USB_ClassInfo_AOA_Host_t*)fdev_get_udata(Stream))) < 0)
 408         {
 409                 if (USB_HostState == HOST_STATE_Unattached)
 410                   return _FDEV_EOF;
 411
 412                 AOA_Host_USBTask((USB_ClassInfo_AOA_Host_t*)fdev_get_udata(Stream));
 413                 USB_USBTask();
 414         }
 415
 416         return ReceivedByte;
 417 }
 418 #endif
 419
 420 #endif
 421
 422