protocol/lufa/LUFA-120730/LUFA/Drivers/USB/Core/UC3/USBController_UC3.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_UC3)
  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 defined(USB_CAN_BE_BOTH)
  67         if (Mode == USB_MODE_UID)
  68         {
  69                 AVR32_USBB.USBCON.uide = true;
  70                 USB_INT_Enable(USB_INT_IDTI);
  71                 USB_CurrentMode = USB_GetUSBModeFromUID();
  72         }
  73         else
  74         {
  75                 AVR32_USBB.USBCON.uide = false;
  76                 USB_CurrentMode = Mode;
  77         }
  78         #else
  79         AVR32_USBB.USBCON.uide = false;
  80         #endif
  81
  82         USB_IsInitialized = true;
  83
  84         USB_ResetInterface();
  85 }
  86
  87 void USB_Disable(void)
  88 {
  89         USB_INT_DisableAllInterrupts();
  90         USB_INT_ClearAllInterrupts();
  91
  92         USB_Detach();
  93         USB_Controller_Disable();
  94
  95         USB_OTGPAD_Off();
  96
  97         #if defined(USB_CAN_BE_BOTH)
  98         USB_CurrentMode = USB_MODE_None;
  99         #endif
 100
 101         AVR32_PM.GCCTRL[3].cen = false;
 102
 103         USB_IsInitialized = false;
 104 }
 105
 106 void USB_ResetInterface(void)
 107 {
 108         #if defined(USB_CAN_BE_BOTH)
 109         bool UIDModeSelectEnabled = AVR32_USBB.USBCON.uide;
 110         #endif
 111
 112         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].pllsel = !(USB_Options & USB_OPT_GCLK_SRC_OSC);
 113         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].oscsel = !(USB_Options & USB_OPT_GCLK_CHANNEL_0);
 114         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].diven  = (F_USB != USB_CLOCK_REQUIRED_FREQ);
 115         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].div    = (F_USB == USB_CLOCK_REQUIRED_FREQ) ? 0 : (uint32_t)((F_USB / USB_CLOCK_REQUIRED_FREQ / 2) - 1);
 116         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].cen    = true;
 117
 118         USB_INT_DisableAllInterrupts();
 119         USB_INT_ClearAllInterrupts();
 120
 121         USB_Controller_Reset();
 122
 123         #if defined(USB_CAN_BE_BOTH)
 124         if (UIDModeSelectEnabled)
 125           USB_INT_Enable(USB_INT_IDTI);
 126         #endif
 127
 128         USB_CLK_Unfreeze();
 129
 130         if (USB_CurrentMode == USB_MODE_Device)
 131         {
 132                 #if defined(USB_CAN_BE_DEVICE)
 133                 AVR32_USBB.USBCON.uimod = true;
 134
 135                 USB_Init_Device();
 136                 #endif
 137         }
 138         else if (USB_CurrentMode == USB_MODE_Host)
 139         {
 140                 #if defined(INVERTED_VBUS_ENABLE_LINE)
 141                 AVR32_USBB.USBCON.vbuspo = true;
 142                 #endif
 143
 144                 #if defined(USB_CAN_BE_HOST)
 145                 AVR32_USBB.USBCON.uimod = false;
 146
 147                 USB_Init_Host();
 148                 #endif
 149         }
 150
 151         USB_OTGPAD_On();
 152 }
 153
 154 #if defined(USB_CAN_BE_DEVICE)
 155 static void USB_Init_Device(void)
 156 {
 157         USB_DeviceState                 = DEVICE_STATE_Unattached;
 158         USB_Device_ConfigurationNumber  = 0;
 159
 160         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 161         USB_Device_RemoteWakeupEnabled  = false;
 162         #endif
 163
 164         #if !defined(NO_DEVICE_SELF_POWER)
 165         USB_Device_CurrentlySelfPowered = false;
 166         #endif
 167
 168         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 169         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 170
 171         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 172           USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 173         #endif
 174
 175         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 176         {
 177                 USB_Device_SetLowSpeed();
 178         }
 179         else
 180         {
 181                 #if defined(USB_DEVICE_OPT_HIGHSPEED)
 182                 if (USB_Options & USB_DEVICE_OPT_HIGHSPEED)
 183                   USB_Device_SetHighSpeed();
 184                 else
 185                   USB_Device_SetFullSpeed();
 186                 #else
 187                 USB_Device_SetFullSpeed();
 188                 #endif
 189         }
 190
 191         USB_INT_Enable(USB_INT_VBUSTI);
 192
 193         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 194                                                            USB_Device_ControlEndpointSize, 1);
 195
 196         USB_INT_Clear(USB_INT_SUSPI);
 197         USB_INT_Enable(USB_INT_SUSPI);
 198         USB_INT_Enable(USB_INT_EORSTI);
 199
 200         USB_Attach();
 201 }
 202 #endif
 203
 204 #if defined(USB_CAN_BE_HOST)
 205 static void USB_Init_Host(void)
 206 {
 207         USB_HostState                = HOST_STATE_Unattached;
 208         USB_Host_ConfigurationNumber = 0;
 209         USB_Host_ControlPipeSize     = PIPE_CONTROLPIPE_DEFAULT_SIZE;
 210
 211         USB_Host_HostMode_On();
 212
 213         USB_Host_VBUS_Auto_On();
 214
 215         USB_INT_Enable(USB_INT_DCONNI);
 216         USB_INT_Enable(USB_INT_BCERRI);
 217
 218         USB_Attach();
 219 }
 220 #endif
 221
 222 #endif