Add support for RAMTRON NVRAM devices

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3347 42af7a65-404d-4744-a932-0658087f49c3

drivers/mmcsd/mmcsd_sdio.c

@@ -2077,6 +2077,7 @@ static void mmcsd_mediachange(FAR void *arg)
 
 static int mmcsd_widebus(FAR struct mmcsd_state_s *priv)
 {
+#ifndef CONFIG_SDIO_WIDTH_D1_ONLY
   int ret;
 
   /* Check if the SD card supports this feature (as reported in the SCR) */
@@ -2145,6 +2146,13 @@ static int mmcsd_widebus(FAR struct mmcsd_state_s *priv)
 
   fdbg("WARNING: Card does not support wide-bus operation\n");
   return -ENOSYS;
+  
+#else /* CONFIG_SDIO_WIDTH_D1_ONLY */
+
+  fvdbg("Wide-bus operation is disabled\n");
+  return -ENOSYS;
+  
+#endif /* CONFIG_SDIO_WIDTH_D1_ONLY */
 }
 
 /****************************************************************************
@@ -2613,7 +2621,7 @@ static int mmcsd_cardidentify(FAR struct mmcsd_state_s *priv)
 
       elapsed = g_system_timer - start;
     }
-  while (elapsed < TICK_PER_SEC && ret != OK);
+  while( elapsed < TICK_PER_SEC ); /* On successful reception while 'breaks', see above. */
 
   /* We get here when the above loop completes, either (1) we could not
    * communicate properly with the card due to errors (and the loop times

drivers/mmcsd/mmcsd_sdio.h

@@ -1,7 +1,7 @@
 /********************************************************************************************
  * drivers/mmcsd/mmcsd_sdio.h
  *
- *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without