LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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 disclaim 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 #include "../../../../Common/Common.h"
  32 #if (ARCH == ARCH_AVR8)
  33
  34 #define  __INCLUDE_FROM_USB_DRIVER
  35 #define  __INCLUDE_FROM_USB_CONTROLLER_C
  36 #include "../USBController.h"
  37
  38 #if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY))
  39 volatile uint8_t USB_CurrentMode = USB_MODE_None;
  40 #endif
  41
  42 #if !defined(USE_STATIC_OPTIONS)
  43 volatile uint8_t USB_Options;
  44 #endif
  45
  46 void USB_Init(
  47                #if defined(USB_CAN_BE_BOTH)
  48                const uint8_t Mode
  49                #endif
  50
  51                #if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
  52                ,
  53                #elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
  54                void
  55                #endif
  56
  57                #if !defined(USE_STATIC_OPTIONS)
  58                const uint8_t Options
  59                #endif
  60                )
  61 {
  62         #if !defined(USE_STATIC_OPTIONS)
  63         USB_Options = Options;
  64         #endif
  65
  66         if (!(USB_Options & USB_OPT_REG_DISABLED))
  67           USB_REG_On();
  68         else
  69           USB_REG_Off();
  70
  71         if (!(USB_Options & USB_OPT_MANUAL_PLL))
  72         {
  73                 #if defined(USB_SERIES_4_AVR)
  74                 PLLFRQ = (1 << PDIV2);
  75                 #endif
  76         }
  77
  78         #if defined(USB_CAN_BE_BOTH)
  79         if (Mode == USB_MODE_UID)
  80         {
  81                 UHWCON |=  (1 << UIDE);
  82                 USB_INT_Enable(USB_INT_IDTI);
  83                 USB_CurrentMode = USB_GetUSBModeFromUID();
  84         }
  85         else
  86         {
  87                 UHWCON &= ~(1 << UIDE);
  88                 USB_CurrentMode = Mode;
  89         }
  90         #endif
  91
  92         USB_IsInitialized = true;
  93
  94         USB_ResetInterface();
  95 }
  96
  97 void USB_Disable(void)
  98 {
  99         USB_INT_DisableAllInterrupts();
 100         USB_INT_ClearAllInterrupts();
 101
 102         USB_Detach();
 103         USB_Controller_Disable();
 104
 105         if (!(USB_Options & USB_OPT_MANUAL_PLL))
 106           USB_PLL_Off();
 107
 108         USB_REG_Off();
 109
 110         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
 111         USB_OTGPAD_Off();
 112         #endif
 113
 114         #if defined(USB_CAN_BE_BOTH)
 115         USB_CurrentMode = USB_MODE_None;
 116         #endif
 117
 118         USB_IsInitialized = false;
 119 }
 120
 121 void USB_ResetInterface(void)
 122 {
 123         #if defined(USB_CAN_BE_BOTH)
 124         bool UIDModeSelectEnabled = ((UHWCON & (1 << UIDE)) != 0);
 125         #endif
 126
 127         USB_INT_DisableAllInterrupts();
 128         USB_INT_ClearAllInterrupts();
 129
 130         USB_Controller_Reset();
 131
 132         #if defined(USB_CAN_BE_BOTH)
 133         if (UIDModeSelectEnabled)
 134           USB_INT_Enable(USB_INT_IDTI);
 135         #endif
 136
 137         USB_CLK_Unfreeze();
 138
 139         if (USB_CurrentMode == USB_MODE_Device)
 140         {
 141                 #if defined(USB_CAN_BE_DEVICE)
 142                 #if (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 143                 UHWCON |=  (1 << UIMOD);
 144                 #endif
 145
 146                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 147                 {
 148                         #if defined(USB_SERIES_2_AVR)
 149                         USB_PLL_On();
 150                         while (!(USB_PLL_IsReady()));
 151                         #else
 152                         USB_PLL_Off();
 153                         #endif
 154                 }
 155
 156                 USB_Init_Device();
 157                 #endif
 158         }
 159         else if (USB_CurrentMode == USB_MODE_Host)
 160         {
 161                 #if defined(USB_CAN_BE_HOST)
 162                 UHWCON &= ~(1 << UIMOD);
 163
 164                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 165                 {
 166                         #if defined(USB_CAN_BE_HOST)
 167                         USB_PLL_On();
 168                         while (!(USB_PLL_IsReady()));
 169                         #endif
 170                 }
 171
 172                 USB_Init_Host();
 173                 #endif
 174         }
 175
 176         #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 177         USB_OTGPAD_On();
 178         #endif
 179 }
 180
 181 #if defined(USB_CAN_BE_DEVICE)
 182 static void USB_Init_Device(void)
 183 {
 184         USB_DeviceState                 = DEVICE_STATE_Unattached;
 185         USB_Device_ConfigurationNumber  = 0;
 186
 187         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 188         USB_Device_RemoteWakeupEnabled  = false;
 189         #endif
 190
 191         #if !defined(NO_DEVICE_SELF_POWER)
 192         USB_Device_CurrentlySelfPowered = false;
 193         #endif
 194
 195         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 196         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 197
 198         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 199             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 200         uint8_t DescriptorAddressSpace;
 201
 202         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 203         {
 204                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 205                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 206                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 207                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 208                 else
 209                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 210         }
 211         #else
 212         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 213         {
 214                 #if defined(USE_RAM_DESCRIPTORS)
 215                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 216                 #elif defined(USE_EEPROM_DESCRIPTORS)
 217                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 218                 #else
 219                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 220                 #endif
 221         }
 222         #endif
 223         #endif
 224
 225         #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 226         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 227           USB_Device_SetLowSpeed();
 228         else
 229           USB_Device_SetFullSpeed();
 230
 231         USB_INT_Enable(USB_INT_VBUSTI);
 232         #endif
 233
 234         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 235                                                            USB_Device_ControlEndpointSize, 1);
 236
 237         USB_INT_Clear(USB_INT_SUSPI);
 238         USB_INT_Enable(USB_INT_SUSPI);
 239         USB_INT_Enable(USB_INT_EORSTI);
 240
 241         USB_Attach();
 242 }
 243 #endif
 244
 245 #if defined(USB_CAN_BE_HOST)
 246 static void USB_Init_Host(void)
 247 {
 248         USB_HostState                = HOST_STATE_Unattached;
 249         USB_Host_ConfigurationNumber = 0;
 250         USB_Host_ControlPipeSize     = PIPE_CONTROLPIPE_DEFAULT_SIZE;
 251
 252         USB_Host_HostMode_On();
 253
 254         USB_Host_VBUS_Auto_Off();
 255         USB_Host_VBUS_Manual_Enable();
 256         USB_Host_VBUS_Manual_On();
 257
 258         USB_INT_Enable(USB_INT_SRPI);
 259         USB_INT_Enable(USB_INT_BCERRI);
 260
 261         USB_Attach();
 262 }
 263 #endif
 264
 265 #endif