| | 1 | /** @file\r |
| | 2 | Helper routine and corresponding data struct used by USB Mouse Absolute Pointer Driver.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | This program and the accompanying materials\r |
| | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
| | 7 | which accompanies this distribution. The full text of the license may be found at\r |
| | 8 | http://opensource.org/licenses/bsd-license.php\r |
| | 9 | \r |
| | 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| | 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| | 12 | \r |
| | 13 | **/\r |
| | 14 | \r |
| | 15 | #ifndef _USB_MOUSE_ABSOLUTE_POINTER_H_\r |
| | 16 | #define _USB_MOUSE_ABSOLUTE_POINTER_H_\r |
| | 17 | \r |
| | 18 | \r |
| | 19 | #include <Uefi.h>\r |
| | 20 | \r |
| | 21 | #include <Protocol/AbsolutePointer.h>\r |
| | 22 | #include <Protocol/UsbIo.h>\r |
| | 23 | #include <Protocol/DevicePath.h>\r |
| | 24 | \r |
| | 25 | #include <Library/ReportStatusCodeLib.h>\r |
| | 26 | #include <Library/BaseMemoryLib.h>\r |
| | 27 | #include <Library/UefiDriverEntryPoint.h>\r |
| | 28 | #include <Library/UefiBootServicesTableLib.h>\r |
| | 29 | #include <Library/UefiLib.h>\r |
| | 30 | #include <Library/MemoryAllocationLib.h>\r |
| | 31 | #include <Library/UefiUsbLib.h>\r |
| | 32 | #include <Library/DebugLib.h>\r |
| | 33 | \r |
| | 34 | #include <IndustryStandard/Usb.h>\r |
| | 35 | \r |
| | 36 | #define CLASS_HID 3\r |
| | 37 | #define SUBCLASS_BOOT 1\r |
| | 38 | #define PROTOCOL_MOUSE 2\r |
| | 39 | \r |
| | 40 | #define BOOT_PROTOCOL 0\r |
| | 41 | #define REPORT_PROTOCOL 1\r |
| | 42 | \r |
| | 43 | #define USB_MOUSE_ABSOLUTE_POINTER_DEV_SIGNATURE SIGNATURE_32 ('u', 'm', 's', 't')\r |
| | 44 | \r |
| | 45 | ///\r |
| | 46 | /// Button range and status\r |
| | 47 | ///\r |
| | 48 | typedef struct {\r |
| | 49 | BOOLEAN ButtonDetected;\r |
| | 50 | UINT8 ButtonMinIndex;\r |
| | 51 | UINT8 ButtonMaxIndex;\r |
| | 52 | UINT8 Reserved;\r |
| | 53 | } USB_MOUSE_BUTTON_DATA;\r |
| | 54 | \r |
| | 55 | ///\r |
| | 56 | /// Device instance of USB mouse.\r |
| | 57 | ///\r |
| | 58 | typedef struct {\r |
| | 59 | UINTN Signature;\r |
| | 60 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r |
| | 61 | EFI_EVENT DelayedRecoveryEvent;\r |
| | 62 | EFI_USB_IO_PROTOCOL *UsbIo;\r |
| | 63 | EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;\r |
| | 64 | EFI_USB_ENDPOINT_DESCRIPTOR IntEndpointDescriptor;\r |
| | 65 | UINT8 NumberOfButtons;\r |
| | 66 | INT32 XLogicMax;\r |
| | 67 | INT32 XLogicMin;\r |
| | 68 | INT32 YLogicMax;\r |
| | 69 | INT32 YLogicMin;\r |
| | 70 | EFI_ABSOLUTE_POINTER_PROTOCOL AbsolutePointerProtocol;\r |
| | 71 | EFI_ABSOLUTE_POINTER_STATE State;\r |
| | 72 | EFI_ABSOLUTE_POINTER_MODE Mode;\r |
| | 73 | BOOLEAN StateChanged;\r |
| | 74 | USB_MOUSE_BUTTON_DATA PrivateData;\r |
| | 75 | EFI_UNICODE_STRING_TABLE *ControllerNameTable;\r |
| | 76 | } USB_MOUSE_ABSOLUTE_POINTER_DEV;\r |
| | 77 | \r |
| | 78 | ///\r |
| | 79 | /// General HID Item structure\r |
| | 80 | ///\r |
| | 81 | \r |
| | 82 | typedef union {\r |
| | 83 | UINT8 Uint8;\r |
| | 84 | UINT16 Uint16;\r |
| | 85 | UINT32 Uint32;\r |
| | 86 | INT8 Int8;\r |
| | 87 | INT16 Int16;\r |
| | 88 | INT32 Int32;\r |
| | 89 | UINT8 *LongData;\r |
| | 90 | } HID_DATA;\r |
| | 91 | \r |
| | 92 | typedef struct {\r |
| | 93 | UINT16 Format;\r |
| | 94 | UINT8 Size;\r |
| | 95 | UINT8 Type;\r |
| | 96 | UINT8 Tag;\r |
| | 97 | HID_DATA Data;\r |
| | 98 | } HID_ITEM;\r |
| | 99 | \r |
| | 100 | #define USB_MOUSE_ABSOLUTE_POINTER_DEV_FROM_MOUSE_PROTOCOL(a) \\r |
| | 101 | CR(a, USB_MOUSE_ABSOLUTE_POINTER_DEV, AbsolutePointerProtocol, USB_MOUSE_ABSOLUTE_POINTER_DEV_SIGNATURE)\r |
| | 102 | \r |
| | 103 | //\r |
| | 104 | // Global Variables\r |
| | 105 | //\r |
| | 106 | extern EFI_DRIVER_BINDING_PROTOCOL gUsbMouseAbsolutePointerDriverBinding;\r |
| | 107 | extern EFI_COMPONENT_NAME_PROTOCOL gUsbMouseAbsolutePointerComponentName;\r |
| | 108 | extern EFI_COMPONENT_NAME2_PROTOCOL gUsbMouseAbsolutePointerComponentName2;\r |
| | 109 | \r |
| | 110 | //\r |
| | 111 | // Functions of Driver Binding Protocol\r |
| | 112 | //\r |
| | 113 | \r |
| | 114 | /**\r |
| | 115 | Check whether USB Mouse Absolute Pointer Driver supports this device.\r |
| | 116 | \r |
| | 117 | @param This The driver binding protocol.\r |
| | 118 | @param Controller The controller handle to check.\r |
| | 119 | @param RemainingDevicePath The remaining device path.\r |
| | 120 | \r |
| | 121 | @retval EFI_SUCCESS The driver supports this controller.\r |
| | 122 | @retval other This device isn't supported.\r |
| | 123 | \r |
| | 124 | **/\r |
| | 125 | EFI_STATUS\r |
| | 126 | EFIAPI\r |
| | 127 | USBMouseAbsolutePointerDriverBindingSupported (\r |
| | 128 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 129 | IN EFI_HANDLE Controller,\r |
| | 130 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| | 131 | );\r |
| | 132 | \r |
| | 133 | /**\r |
| | 134 | Starts the mouse device with this driver.\r |
| | 135 | \r |
| | 136 | This function consumes USB I/O Portocol, intializes USB mouse device,\r |
| | 137 | installs Absolute Pointer Protocol, and submits Asynchronous Interrupt\r |
| | 138 | Transfer to manage the USB mouse device.\r |
| | 139 | \r |
| | 140 | @param This The driver binding instance.\r |
| | 141 | @param Controller Handle of device to bind driver to.\r |
| | 142 | @param RemainingDevicePath Optional parameter use to pick a specific child\r |
| | 143 | device to start.\r |
| | 144 | \r |
| | 145 | @retval EFI_SUCCESS This driver supports this device.\r |
| | 146 | @retval EFI_UNSUPPORTED This driver does not support this device.\r |
| | 147 | @retval EFI_DEVICE_ERROR This driver cannot be started due to device Error.\r |
| | 148 | @retval EFI_OUT_OF_RESOURCES Can't allocate memory resources.\r |
| | 149 | @retval EFI_ALREADY_STARTED This driver has been started.\r |
| | 150 | \r |
| | 151 | **/\r |
| | 152 | EFI_STATUS\r |
| | 153 | EFIAPI\r |
| | 154 | USBMouseAbsolutePointerDriverBindingStart (\r |
| | 155 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 156 | IN EFI_HANDLE Controller,\r |
| | 157 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| | 158 | );\r |
| | 159 | \r |
| | 160 | /**\r |
| | 161 | Stop the USB mouse device handled by this driver.\r |
| | 162 | \r |
| | 163 | @param This The driver binding protocol.\r |
| | 164 | @param Controller The controller to release.\r |
| | 165 | @param NumberOfChildren The number of handles in ChildHandleBuffer.\r |
| | 166 | @param ChildHandleBuffer The array of child handle.\r |
| | 167 | \r |
| | 168 | @retval EFI_SUCCESS The device was stopped.\r |
| | 169 | @retval EFI_UNSUPPORTED Absolute Pointer Protocol is not installed on Controller.\r |
| | 170 | @retval Others Fail to uninstall protocols attached on the device.\r |
| | 171 | \r |
| | 172 | **/\r |
| | 173 | EFI_STATUS\r |
| | 174 | EFIAPI\r |
| | 175 | USBMouseAbsolutePointerDriverBindingStop (\r |
| | 176 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 177 | IN EFI_HANDLE Controller,\r |
| | 178 | IN UINTN NumberOfChildren,\r |
| | 179 | IN EFI_HANDLE *ChildHandleBuffer\r |
| | 180 | );\r |
| | 181 | \r |
| | 182 | //\r |
| | 183 | // EFI Component Name Functions\r |
| | 184 | //\r |
| | 185 | \r |
| | 186 | /**\r |
| | 187 | Retrieves a Unicode string that is the user readable name of the driver.\r |
| | 188 | \r |
| | 189 | This function retrieves the user readable name of a driver in the form of a\r |
| | 190 | Unicode string. If the driver specified by This has a user readable name in\r |
| | 191 | the language specified by Language, then a pointer to the driver name is\r |
| | 192 | returned in DriverName, and EFI_SUCCESS is returned. If the driver specified\r |
| | 193 | by This does not support the language specified by Language,\r |
| | 194 | then EFI_UNSUPPORTED is returned.\r |
| | 195 | \r |
| | 196 | @param This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r |
| | 197 | EFI_COMPONENT_NAME_PROTOCOL instance.\r |
| | 198 | @param Language A pointer to a Null-terminated ASCII string\r |
| | 199 | array indicating the language. This is the\r |
| | 200 | language of the driver name that the caller is\r |
| | 201 | requesting, and it must match one of the\r |
| | 202 | languages specified in SupportedLanguages. The\r |
| | 203 | number of languages supported by a driver is up\r |
| | 204 | to the driver writer. Language is specified\r |
| | 205 | in RFC 4646 or ISO 639-2 language code format.\r |
| | 206 | @param DriverName A pointer to the Unicode string to return.\r |
| | 207 | This Unicode string is the name of the\r |
| | 208 | driver specified by This in the language\r |
| | 209 | specified by Language.\r |
| | 210 | \r |
| | 211 | @retval EFI_SUCCESS The Unicode string for the Driver specified by\r |
| | 212 | This and the language specified by Language was\r |
| | 213 | returned in DriverName.\r |
| | 214 | @retval EFI_INVALID_PARAMETER Language is NULL.\r |
| | 215 | @retval EFI_INVALID_PARAMETER DriverName is NULL.\r |
| | 216 | @retval EFI_UNSUPPORTED The driver specified by This does not support\r |
| | 217 | the language specified by Language.\r |
| | 218 | \r |
| | 219 | **/\r |
| | 220 | EFI_STATUS\r |
| | 221 | EFIAPI\r |
| | 222 | UsbMouseAbsolutePointerComponentNameGetDriverName (\r |
| | 223 | IN EFI_COMPONENT_NAME_PROTOCOL *This,\r |
| | 224 | IN CHAR8 *Language,\r |
| | 225 | OUT CHAR16 **DriverName\r |
| | 226 | );\r |
| | 227 | \r |
| | 228 | /**\r |
| | 229 | Retrieves a Unicode string that is the user readable name of the controller\r |
| | 230 | that is being managed by a driver.\r |
| | 231 | \r |
| | 232 | This function retrieves the user readable name of the controller specified by\r |
| | 233 | ControllerHandle and ChildHandle in the form of a Unicode string. If the\r |
| | 234 | driver specified by This has a user readable name in the language specified by\r |
| | 235 | Language, then a pointer to the controller name is returned in ControllerName,\r |
| | 236 | and EFI_SUCCESS is returned. If the driver specified by This is not currently\r |
| | 237 | managing the controller specified by ControllerHandle and ChildHandle,\r |
| | 238 | then EFI_UNSUPPORTED is returned. If the driver specified by This does not\r |
| | 239 | support the language specified by Language, then EFI_UNSUPPORTED is returned.\r |
| | 240 | \r |
| | 241 | @param This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r |
| | 242 | EFI_COMPONENT_NAME_PROTOCOL instance.\r |
| | 243 | @param ControllerHandle The handle of a controller that the driver\r |
| | 244 | specified by This is managing. This handle\r |
| | 245 | specifies the controller whose name is to be\r |
| | 246 | returned.\r |
| | 247 | @param ChildHandle The handle of the child controller to retrieve\r |
| | 248 | the name of. This is an optional parameter that\r |
| | 249 | may be NULL. It will be NULL for device\r |
| | 250 | drivers. It will also be NULL for a bus drivers\r |
| | 251 | that wish to retrieve the name of the bus\r |
| | 252 | controller. It will not be NULL for a bus\r |
| | 253 | driver that wishes to retrieve the name of a\r |
| | 254 | child controller.\r |
| | 255 | @param Language A pointer to a Null-terminated ASCII string\r |
| | 256 | array indicating the language. This is the\r |
| | 257 | language of the driver name that the caller is\r |
| | 258 | requesting, and it must match one of the\r |
| | 259 | languages specified in SupportedLanguages. The\r |
| | 260 | number of languages supported by a driver is up\r |
| | 261 | to the driver writer. Language is specified in\r |
| | 262 | RFC 4646 or ISO 639-2 language code format.\r |
| | 263 | @param ControllerName A pointer to the Unicode string to return.\r |
| | 264 | This Unicode string is the name of the\r |
| | 265 | controller specified by ControllerHandle and\r |
| | 266 | ChildHandle in the language specified by\r |
| | 267 | Language from the point of view of the driver\r |
| | 268 | specified by This.\r |
| | 269 | \r |
| | 270 | @retval EFI_SUCCESS The Unicode string for the user readable name in\r |
| | 271 | the language specified by Language for the\r |
| | 272 | driver specified by This was returned in\r |
| | 273 | DriverName.\r |
| | 274 | @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.\r |
| | 275 | @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r |
| | 276 | EFI_HANDLE.\r |
| | 277 | @retval EFI_INVALID_PARAMETER Language is NULL.\r |
| | 278 | @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r |
| | 279 | @retval EFI_UNSUPPORTED The driver specified by This is not currently\r |
| | 280 | managing the controller specified by\r |
| | 281 | ControllerHandle and ChildHandle.\r |
| | 282 | @retval EFI_UNSUPPORTED The driver specified by This does not support\r |
| | 283 | the language specified by Language.\r |
| | 284 | \r |
| | 285 | **/\r |
| | 286 | EFI_STATUS\r |
| | 287 | EFIAPI\r |
| | 288 | UsbMouseAbsolutePointerComponentNameGetControllerName (\r |
| | 289 | IN EFI_COMPONENT_NAME_PROTOCOL *This,\r |
| | 290 | IN EFI_HANDLE ControllerHandle,\r |
| | 291 | IN EFI_HANDLE ChildHandle OPTIONAL,\r |
| | 292 | IN CHAR8 *Language,\r |
| | 293 | OUT CHAR16 **ControllerName\r |
| | 294 | );\r |
| | 295 | \r |
| | 296 | //\r |
| | 297 | // Functions of EFI_ABSOLUTE_POINTER_PROTOCOL\r |
| | 298 | //\r |
| | 299 | \r |
| | 300 | /**\r |
| | 301 | Retrieves the current state of a pointer device.\r |
| | 302 | \r |
| | 303 | @param This A pointer to the EFI_ABSOLUTE_POINTER_PROTOCOL instance. \r |
| | 304 | @param MouseState A pointer to the state information on the pointer device.\r |
| | 305 | \r |
| | 306 | @retval EFI_SUCCESS The state of the pointer device was returned in State.\r |
| | 307 | @retval EFI_NOT_READY The state of the pointer device has not changed since the last call to\r |
| | 308 | GetState(). \r |
| | 309 | @retval EFI_DEVICE_ERROR A device error occurred while attempting to retrieve the pointer device's\r |
| | 310 | current state. \r |
| | 311 | @retval EFI_INVALID_PARAMETER State is NULL. \r |
| | 312 | \r |
| | 313 | **/\r |
| | 314 | EFI_STATUS\r |
| | 315 | EFIAPI\r |
| | 316 | GetMouseAbsolutePointerState (\r |
| | 317 | IN EFI_ABSOLUTE_POINTER_PROTOCOL *This,\r |
| | 318 | OUT EFI_ABSOLUTE_POINTER_STATE *State\r |
| | 319 | );\r |
| | 320 | \r |
| | 321 | /**\r |
| | 322 | Resets the pointer device hardware.\r |
| | 323 | \r |
| | 324 | @param This A pointer to the EFI_ABSOLUTE_POINTER_PROTOCOL instance.\r |
| | 325 | @param ExtendedVerification Indicates that the driver may perform a more exhaustive\r |
| | 326 | verification operation of the device during reset.\r |
| | 327 | \r |
| | 328 | @retval EFI_SUCCESS The device was reset.\r |
| | 329 | @retval EFI_DEVICE_ERROR The device is not functioning correctly and could not be reset.\r |
| | 330 | \r |
| | 331 | **/\r |
| | 332 | EFI_STATUS\r |
| | 333 | EFIAPI\r |
| | 334 | UsbMouseAbsolutePointerReset (\r |
| | 335 | IN EFI_ABSOLUTE_POINTER_PROTOCOL *This,\r |
| | 336 | IN BOOLEAN ExtendedVerification\r |
| | 337 | );\r |
| | 338 | \r |
| | 339 | /**\r |
| | 340 | Event notification function for EFI_ABSOLUTE_POINTER_PROTOCOL.WaitForInput event.\r |
| | 341 | \r |
| | 342 | @param Event Event to be signaled when there's input from mouse.\r |
| | 343 | @param Context Points to USB_MOUSE_ABSOLUTE_POINTER_DEV instance.\r |
| | 344 | \r |
| | 345 | **/\r |
| | 346 | VOID\r |
| | 347 | EFIAPI\r |
| | 348 | UsbMouseAbsolutePointerWaitForInput (\r |
| | 349 | IN EFI_EVENT Event,\r |
| | 350 | IN VOID *Context\r |
| | 351 | );\r |
| | 352 | \r |
| | 353 | //\r |
| | 354 | // Internal worker functions\r |
| | 355 | //\r |
| | 356 | \r |
| | 357 | /**\r |
| | 358 | Uses USB I/O to check whether the device is a USB mouse device.\r |
| | 359 | \r |
| | 360 | @param UsbIo Pointer to a USB I/O protocol instance.\r |
| | 361 | \r |
| | 362 | @retval TRUE Device is a USB mouse device.\r |
| | 363 | @retval FALSE Device is a not USB mouse device.\r |
| | 364 | \r |
| | 365 | **/\r |
| | 366 | BOOLEAN\r |
| | 367 | IsUsbMouse (\r |
| | 368 | IN EFI_USB_IO_PROTOCOL *UsbIo\r |
| | 369 | );\r |
| | 370 | \r |
| | 371 | /**\r |
| | 372 | Initialize the USB mouse device.\r |
| | 373 | \r |
| | 374 | This function retrieves and parses HID report descriptor, and\r |
| | 375 | initializes state of USB_MOUSE_ABSOLUTE_POINTER_DEV. Then it sets indefinite idle\r |
| | 376 | rate for the device. Finally it creates event for delayed recovery,\r |
| | 377 | which deals with device error.\r |
| | 378 | \r |
| | 379 | @param UsbMouseAbsolutePointerDev Device instance to be initialized.\r |
| | 380 | \r |
| | 381 | @retval EFI_SUCCESS USB mouse device successfully initialized.\r |
| | 382 | @retval EFI_UNSUPPORTED HID descriptor type is not report descriptor.\r |
| | 383 | @retval Other USB mouse device was not initialized successfully.\r |
| | 384 | \r |
| | 385 | **/\r |
| | 386 | EFI_STATUS\r |
| | 387 | InitializeUsbMouseDevice (\r |
| | 388 | IN USB_MOUSE_ABSOLUTE_POINTER_DEV *UsbMouseAbsolutePointerDev\r |
| | 389 | );\r |
| | 390 | \r |
| | 391 | /**\r |
| | 392 | Handler function for USB mouse's asynchronous interrupt transfer.\r |
| | 393 | \r |
| | 394 | This function is the handler function for USB mouse's asynchronous interrupt transfer\r |
| | 395 | to manage the mouse. It parses data returned from asynchronous interrupt transfer, and\r |
| | 396 | get button and movement state.\r |
| | 397 | \r |
| | 398 | @param Data A pointer to a buffer that is filled with key data which is\r |
| | 399 | retrieved via asynchronous interrupt transfer.\r |
| | 400 | @param DataLength Indicates the size of the data buffer.\r |
| | 401 | @param Context Pointing to USB_KB_DEV instance.\r |
| | 402 | @param Result Indicates the result of the asynchronous interrupt transfer.\r |
| | 403 | \r |
| | 404 | @retval EFI_SUCCESS Asynchronous interrupt transfer is handled successfully.\r |
| | 405 | @retval EFI_DEVICE_ERROR Hardware error occurs.\r |
| | 406 | \r |
| | 407 | **/\r |
| | 408 | EFI_STATUS\r |
| | 409 | EFIAPI\r |
| | 410 | OnMouseInterruptComplete (\r |
| | 411 | IN VOID *Data,\r |
| | 412 | IN UINTN DataLength,\r |
| | 413 | IN VOID *Context,\r |
| | 414 | IN UINT32 Result\r |
| | 415 | );\r |
| | 416 | \r |
| | 417 | /**\r |
| | 418 | Handler for Delayed Recovery event.\r |
| | 419 | \r |
| | 420 | This function is the handler for Delayed Recovery event triggered\r |
| | 421 | by timer.\r |
| | 422 | After a device error occurs, the event would be triggered\r |
| | 423 | with interval of EFI_USB_INTERRUPT_DELAY. EFI_USB_INTERRUPT_DELAY\r |
| | 424 | is defined in USB standard for error handling.\r |
| | 425 | \r |
| | 426 | @param Event The Delayed Recovery event.\r |
| | 427 | @param Context Points to the USB_MOUSE_ABSOLUTE_POINTER_DEV instance.\r |
| | 428 | \r |
| | 429 | **/\r |
| | 430 | VOID\r |
| | 431 | EFIAPI\r |
| | 432 | USBMouseRecoveryHandler (\r |
| | 433 | IN EFI_EVENT Event,\r |
| | 434 | IN VOID *Context\r |
| | 435 | );\r |
| | 436 | \r |
| | 437 | /**\r |
| | 438 | Parse Mouse Report Descriptor.\r |
| | 439 | \r |
| | 440 | According to USB HID Specification, report descriptors are\r |
| | 441 | composed of pieces of information. Each piece of information\r |
| | 442 | is called an Item. This function retrieves each item from\r |
| | 443 | the report descriptor and updates USB_MOUSE_ABSOLUTE_POINTER_DEV.\r |
| | 444 | \r |
| | 445 | @param UsbMouseAbsolutePointer The instance of USB_MOUSE_ABSOLUTE_POINTER_DEV\r |
| | 446 | @param ReportDescriptor Report descriptor to parse\r |
| | 447 | @param ReportSize Report descriptor size\r |
| | 448 | \r |
| | 449 | @retval EFI_SUCCESS Report descriptor successfully parsed.\r |
| | 450 | @retval EFI_UNSUPPORTED Report descriptor contains long item.\r |
| | 451 | \r |
| | 452 | **/\r |
| | 453 | EFI_STATUS\r |
| | 454 | ParseMouseReportDescriptor (\r |
| | 455 | OUT USB_MOUSE_ABSOLUTE_POINTER_DEV *UsbMouseAbsolutePointer,\r |
| | 456 | IN UINT8 *ReportDescriptor,\r |
| | 457 | IN UINTN ReportSize\r |
| | 458 | );\r |
| | 459 | \r |
| | 460 | #endif\r |
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