kernel/drivers/usb/dwc3/debug.h

   1 /**
   2  * debug.h - DesignWare USB3 DRD Controller Debug Header
   3  *
   4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
   5  *
   6  * Authors: Felipe Balbi <balbi@ti.com>,
   7  *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
   8  *
   9  * This program is free software: you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2  of
  11  * the License as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #ifndef __DWC3_DEBUG_H
  20 #define __DWC3_DEBUG_H
  21
  22 #include "core.h"
  23
  24 /**
  25  * dwc3_gadget_ep_cmd_string - returns endpoint command string
  26  * @cmd: command code
  27  */
  28 static inline const char *
  29 dwc3_gadget_ep_cmd_string(u8 cmd)
  30 {
  31         switch (cmd) {
  32         case DWC3_DEPCMD_DEPSTARTCFG:
  33                 return "Start New Configuration";
  34         case DWC3_DEPCMD_ENDTRANSFER:
  35                 return "End Transfer";
  36         case DWC3_DEPCMD_UPDATETRANSFER:
  37                 return "Update Transfer";
  38         case DWC3_DEPCMD_STARTTRANSFER:
  39                 return "Start Transfer";
  40         case DWC3_DEPCMD_CLEARSTALL:
  41                 return "Clear Stall";
  42         case DWC3_DEPCMD_SETSTALL:
  43                 return "Set Stall";
  44         case DWC3_DEPCMD_GETEPSTATE:
  45                 return "Get Endpoint State";
  46         case DWC3_DEPCMD_SETTRANSFRESOURCE:
  47                 return "Set Endpoint Transfer Resource";
  48         case DWC3_DEPCMD_SETEPCONFIG:
  49                 return "Set Endpoint Configuration";
  50         default:
  51                 return "UNKNOWN command";
  52         }
  53 }
  54
  55 /**
  56  * dwc3_gadget_generic_cmd_string - returns generic command string
  57  * @cmd: command code
  58  */
  59 static inline const char *
  60 dwc3_gadget_generic_cmd_string(u8 cmd)
  61 {
  62         switch (cmd) {
  63         case DWC3_DGCMD_SET_LMP:
  64                 return "Set LMP";
  65         case DWC3_DGCMD_SET_PERIODIC_PAR:
  66                 return "Set Periodic Parameters";
  67         case DWC3_DGCMD_XMIT_FUNCTION:
  68                 return "Transmit Function Wake Device Notification";
  69         case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO:
  70                 return "Set Scratchpad Buffer Array Address Lo";
  71         case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI:
  72                 return "Set Scratchpad Buffer Array Address Hi";
  73         case DWC3_DGCMD_SELECTED_FIFO_FLUSH:
  74                 return "Selected FIFO Flush";
  75         case DWC3_DGCMD_ALL_FIFO_FLUSH:
  76                 return "All FIFO Flush";
  77         case DWC3_DGCMD_SET_ENDPOINT_NRDY:
  78                 return "Set Endpoint NRDY";
  79         case DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK:
  80                 return "Run SoC Bus Loopback Test";
  81         default:
  82                 return "UNKNOWN";
  83         }
  84 }
  85
  86 /**
  87  * dwc3_gadget_link_string - returns link name
  88  * @link_state: link state code
  89  */
  90 static inline const char *
  91 dwc3_gadget_link_string(enum dwc3_link_state link_state)
  92 {
  93         switch (link_state) {
  94         case DWC3_LINK_STATE_U0:
  95                 return "U0";
  96         case DWC3_LINK_STATE_U1:
  97                 return "U1";
  98         case DWC3_LINK_STATE_U2:
  99                 return "U2";
 100         case DWC3_LINK_STATE_U3:
 101                 return "U3";
 102         case DWC3_LINK_STATE_SS_DIS:
 103                 return "SS.Disabled";
 104         case DWC3_LINK_STATE_RX_DET:
 105                 return "RX.Detect";
 106         case DWC3_LINK_STATE_SS_INACT:
 107                 return "SS.Inactive";
 108         case DWC3_LINK_STATE_POLL:
 109                 return "Polling";
 110         case DWC3_LINK_STATE_RECOV:
 111                 return "Recovery";
 112         case DWC3_LINK_STATE_HRESET:
 113                 return "Hot Reset";
 114         case DWC3_LINK_STATE_CMPLY:
 115                 return "Compliance";
 116         case DWC3_LINK_STATE_LPBK:
 117                 return "Loopback";
 118         case DWC3_LINK_STATE_RESET:
 119                 return "Reset";
 120         case DWC3_LINK_STATE_RESUME:
 121                 return "Resume";
 122         default:
 123                 return "UNKNOWN link state\n";
 124         }
 125 }
 126
 127 /**
 128  * dwc3_gadget_event_string - returns event name
 129  * @event: the event code
 130  */
 131 static inline const char *dwc3_gadget_event_string(u8 event)
 132 {
 133         switch (event) {
 134         case DWC3_DEVICE_EVENT_DISCONNECT:
 135                 return "Disconnect";
 136         case DWC3_DEVICE_EVENT_RESET:
 137                 return "Reset";
 138         case DWC3_DEVICE_EVENT_CONNECT_DONE:
 139                 return "Connection Done";
 140         case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
 141                 return "Link Status Change";
 142         case DWC3_DEVICE_EVENT_WAKEUP:
 143                 return "WakeUp";
 144         case DWC3_DEVICE_EVENT_EOPF:
 145                 return "End-Of-Frame";
 146         case DWC3_DEVICE_EVENT_SOF:
 147                 return "Start-Of-Frame";
 148         case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
 149                 return "Erratic Error";
 150         case DWC3_DEVICE_EVENT_CMD_CMPL:
 151                 return "Command Complete";
 152         case DWC3_DEVICE_EVENT_OVERFLOW:
 153                 return "Overflow";
 154         }
 155
 156         return "UNKNOWN";
 157 }
 158
 159 /**
 160  * dwc3_ep_event_string - returns event name
 161  * @event: then event code
 162  */
 163 static inline const char *dwc3_ep_event_string(u8 event)
 164 {
 165         switch (event) {
 166         case DWC3_DEPEVT_XFERCOMPLETE:
 167                 return "Transfer Complete";
 168         case DWC3_DEPEVT_XFERINPROGRESS:
 169                 return "Transfer In-Progress";
 170         case DWC3_DEPEVT_XFERNOTREADY:
 171                 return "Transfer Not Ready";
 172         case DWC3_DEPEVT_RXTXFIFOEVT:
 173                 return "FIFO";
 174         case DWC3_DEPEVT_STREAMEVT:
 175                 return "Stream";
 176         case DWC3_DEPEVT_EPCMDCMPLT:
 177                 return "Endpoint Command Complete";
 178         }
 179
 180         return "UNKNOWN";
 181 }
 182
 183 /**
 184  * dwc3_gadget_event_type_string - return event name
 185  * @event: the event code
 186  */
 187 static inline const char *dwc3_gadget_event_type_string(u8 event)
 188 {
 189         switch (event) {
 190         case DWC3_DEVICE_EVENT_DISCONNECT:
 191                 return "Disconnect";
 192         case DWC3_DEVICE_EVENT_RESET:
 193                 return "Reset";
 194         case DWC3_DEVICE_EVENT_CONNECT_DONE:
 195                 return "Connect Done";
 196         case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
 197                 return "Link Status Change";
 198         case DWC3_DEVICE_EVENT_WAKEUP:
 199                 return "Wake-Up";
 200         case DWC3_DEVICE_EVENT_HIBER_REQ:
 201                 return "Hibernation";
 202         case DWC3_DEVICE_EVENT_EOPF:
 203                 return "End of Periodic Frame";
 204         case DWC3_DEVICE_EVENT_SOF:
 205                 return "Start of Frame";
 206         case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
 207                 return "Erratic Error";
 208         case DWC3_DEVICE_EVENT_CMD_CMPL:
 209                 return "Command Complete";
 210         case DWC3_DEVICE_EVENT_OVERFLOW:
 211                 return "Overflow";
 212         default:
 213                 return "UNKNOWN";
 214         }
 215 }
 216
 217 void dwc3_trace(void (*trace)(struct va_format *), const char *fmt, ...);
 218
 219 #ifdef CONFIG_DEBUG_FS
 220 extern int dwc3_debugfs_init(struct dwc3 *);
 221 extern void dwc3_debugfs_exit(struct dwc3 *);
 222 #else
 223 static inline int dwc3_debugfs_init(struct dwc3 *d)
 224 {  return 0;  }
 225 static inline void dwc3_debugfs_exit(struct dwc3 *d)
 226 {  }
 227 #endif
 228 #endif /* __DWC3_DEBUG_H */