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

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2015.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2015  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 #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_CAN_BE_BOTH)
  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 defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  67         /* Workaround for AVR8 bootloaders that fail to turn off the OTG pad before running
  68          * the loaded application. This causes VBUS detection to fail unless we first force
  69          * it off to reset it. */
  70         USB_OTGPAD_Off();
  71         #endif
  72
  73         if (!(USB_Options & USB_OPT_REG_DISABLED))
  74           USB_REG_On();
  75         else
  76           USB_REG_Off();
  77
  78         if (!(USB_Options & USB_OPT_MANUAL_PLL))
  79         {
  80                 #if defined(USB_SERIES_4_AVR)
  81                 PLLFRQ = (1 << PDIV2);
  82                 #endif
  83         }
  84
  85         #if defined(USB_CAN_BE_BOTH)
  86         if (Mode == USB_MODE_UID)
  87         {
  88                 UHWCON |=  (1 << UIDE);
  89                 USB_INT_Enable(USB_INT_IDTI);
  90                 USB_CurrentMode = USB_GetUSBModeFromUID();
  91         }
  92         else
  93         {
  94                 UHWCON &= ~(1 << UIDE);
  95                 USB_CurrentMode = Mode;
  96         }
  97         #endif
  98
  99         USB_IsInitialized = true;
 100
 101         USB_ResetInterface();
 102 }
 103
 104 void USB_Disable(void)
 105 {
 106         USB_INT_DisableAllInterrupts();
 107         USB_INT_ClearAllInterrupts();
 108
 109         USB_Detach();
 110         USB_Controller_Disable();
 111
 112         if (!(USB_Options & USB_OPT_MANUAL_PLL))
 113           USB_PLL_Off();
 114
 115         if (!(USB_Options & USB_OPT_REG_KEEP_ENABLED))
 116           USB_REG_Off();
 117
 118         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
 119         USB_OTGPAD_Off();
 120         #endif
 121
 122         #if defined(USB_CAN_BE_BOTH)
 123         USB_CurrentMode = USB_MODE_None;
 124         #endif
 125
 126         USB_IsInitialized = false;
 127 }
 128
 129 void USB_ResetInterface(void)
 130 {
 131         #if defined(USB_CAN_BE_BOTH)
 132         bool UIDModeSelectEnabled = ((UHWCON & (1 << UIDE)) != 0);
 133         #endif
 134
 135         USB_INT_DisableAllInterrupts();
 136         USB_INT_ClearAllInterrupts();
 137
 138         USB_Controller_Reset();
 139
 140         #if defined(USB_CAN_BE_BOTH)
 141         if (UIDModeSelectEnabled)
 142           USB_INT_Enable(USB_INT_IDTI);
 143         #endif
 144
 145         USB_CLK_Unfreeze();
 146
 147         if (USB_CurrentMode == USB_MODE_Device)
 148         {
 149                 #if defined(USB_CAN_BE_DEVICE)
 150                 #if (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 151                 UHWCON |=  (1 << UIMOD);
 152                 #endif
 153
 154                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 155                 {
 156                         #if defined(USB_SERIES_2_AVR)
 157                         USB_PLL_On();
 158                         while (!(USB_PLL_IsReady()));
 159                         #else
 160                         USB_PLL_Off();
 161                         #endif
 162                 }
 163
 164                 USB_Init_Device();
 165                 #endif
 166         }
 167         else if (USB_CurrentMode == USB_MODE_Host)
 168         {
 169                 #if defined(USB_CAN_BE_HOST)
 170                 UHWCON &= ~(1 << UIMOD);
 171
 172                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 173                 {
 174                         #if defined(USB_CAN_BE_HOST)
 175                         USB_PLL_On();
 176                         while (!(USB_PLL_IsReady()));
 177                         #endif
 178                 }
 179
 180                 USB_Init_Host();
 181                 #endif
 182         }
 183
 184         #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 185         USB_OTGPAD_On();
 186         #endif
 187 }
 188
 189 #if defined(USB_CAN_BE_DEVICE)
 190 static void USB_Init_Device(void)
 191 {
 192         USB_DeviceState                 = DEVICE_STATE_Unattached;
 193         USB_Device_ConfigurationNumber  = 0;
 194
 195         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 196         USB_Device_RemoteWakeupEnabled  = false;
 197         #endif
 198
 199         #if !defined(NO_DEVICE_SELF_POWER)
 200         USB_Device_CurrentlySelfPowered = false;
 201         #endif
 202
 203         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 204         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 205
 206         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 207             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 208         uint8_t DescriptorAddressSpace;
 209
 210         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 211         {
 212                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 213                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 214                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 215                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 216                 else
 217                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 218         }
 219         #else
 220         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 221         {
 222                 #if defined(USE_RAM_DESCRIPTORS)
 223                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 224                 #elif defined(USE_EEPROM_DESCRIPTORS)
 225                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 226                 #else
 227                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 228                 #endif
 229         }
 230         #endif
 231         #endif
 232
 233         #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 234         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 235           USB_Device_SetLowSpeed();
 236         else
 237           USB_Device_SetFullSpeed();
 238
 239         USB_INT_Enable(USB_INT_VBUSTI);
 240         #endif
 241
 242         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 243                                                            USB_Device_ControlEndpointSize, 1);
 244
 245         USB_INT_Clear(USB_INT_SUSPI);
 246         USB_INT_Enable(USB_INT_SUSPI);
 247         USB_INT_Enable(USB_INT_EORSTI);
 248
 249         USB_Attach();
 250 }
 251 #endif
 252
 253 #if defined(USB_CAN_BE_HOST)
 254 static void USB_Init_Host(void)
 255 {
 256         USB_HostState                = HOST_STATE_Unattached;
 257         USB_Host_ConfigurationNumber = 0;
 258         USB_Host_ControlPipeSize     = PIPE_CONTROLPIPE_DEFAULT_SIZE;
 259
 260         USB_Host_HostMode_On();
 261
 262         USB_Host_VBUS_Auto_Off();
 263         USB_Host_VBUS_Manual_Enable();
 264         USB_Host_VBUS_Manual_On();
 265
 266         USB_INT_Enable(USB_INT_SRPI);
 267         USB_INT_Enable(USB_INT_BCERRI);
 268
 269         USB_Attach();
 270 }
 271 #endif
 272
 273 #endif