drivers/usb/storage/dpcm.c

   1 /* Driver for Microtech DPCM-USB CompactFlash/SmartMedia reader
   2  *
   3  * $Id: dpcm.c,v 1.1 2000/08/08 01:26:12 webbb Exp $
   4  *
   5  * DPCM driver v0.1:
   6  *
   7  * First release
   8  *
   9  * Current development and maintainance by:
  10  *   (c) 2000 Brian Webb (webbb@earthlink.net)
  11  *
  12  * This device contains both a CompactFlash card reader, which
  13  * usest the Control/Bulk w/o Interrupt protocol and
  14  * a SmartMedia card reader that uses the same protocol
  15  * as the SDDR09.
  16  *
  17  * This program is free software; you can redistribute it and/or modify it
  18  * under the terms of the GNU General Public License as published by the
  19  * Free Software Foundation; either version 2, or (at your option) any
  20  * later version.
  21  *
  22  * This program is distributed in the hope that it will be useful, but
  23  * WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  25  * General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License along
  28  * with this program; if not, write to the Free Software Foundation, Inc.,
  29  * 675 Mass Ave, Cambridge, MA 02139, USA.
  30  */
  31
  32 #include "transport.h"
  33 #include "protocol.h"
  34 #include "usb.h"
  35 #include "debug.h"
  36 #include "dpcm.h"
  37 #include "sddr09.h"
  38
  39
  40 /*
  41  * Transport for the Microtech DPCM-USB
  42  *
  43  */
  44 int dpcm_transport(Scsi_Cmnd *srb, struct us_data *us)
  45 {
  46   int ret;
  47
  48   if(srb == NULL)
  49     return USB_STOR_TRANSPORT_ERROR;
  50
  51   US_DEBUGP("dpcm_transport: LUN=%d\n", srb->lun);
  52
  53   switch(srb->lun) {
  54   case 0:
  55
  56     /*
  57      * LUN 0 corresponds to the CompactFlash card reader.
  58      */
  59     return usb_stor_CB_transport(srb, us);
  60
  61 #ifdef CONFIG_USB_STORAGE_SDDR09
  62   case 1:
  63
  64     /*
  65      * LUN 1 corresponds to the SmartMedia card reader.
  66      */
  67
  68     /*
  69      * Set the LUN to 0 (just in case).
  70      */
  71     srb->lun = 0; us->srb->lun = 0;
  72     ret = sddr09_transport(srb, us);
  73     srb->lun = 1; us->srb->lun = 1;
  74
  75     return ret;
  76 #endif
  77
  78   default:
  79     US_DEBUGP("dpcm_transport: Invalid LUN %d\n", srb->lun);
  80     return USB_STOR_TRANSPORT_ERROR;
  81   }
  82 }