From 29c706c9e17447ef58198c36168457c37a00ff4e Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sun, 9 Jan 2011 15:35:08 +0000
Subject: Basic USB host functionality in place

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3236 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/arch/arm/src/lpc17xx/lpc17_usbhost.c | 29 ++++++++++++++++++++++++++---
 nuttx/include/nuttx/usb/ohci.h             |  2 +-
 nuttx/include/nuttx/usb/usbhost.h          |  4 ++--
 3 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_usbhost.c b/nuttx/arch/arm/src/lpc17xx/lpc17_usbhost.c
index 9b73ed0d2..950a0ffe7 100755
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_usbhost.c
+++ b/nuttx/arch/arm/src/lpc17xx/lpc17_usbhost.c
@@ -1282,8 +1282,8 @@ static int lpc17_transfer(FAR struct usbhost_driver_s *drvr,
   int ret;
 
   DEBUGASSERT(drvr && ep && buffer && buflen > 0);
-  uvdbg("EP%d %s maxpacket:%d buflen:%d\n",
-        ep->addr, ep->in ? "IN" : "OUT", ep->mxpacketsize, buflen);
+  uvdbg("EP%d %s toggle:%d maxpacket:%d buflen:%d\n",
+        ep->addr, ep->in ? "IN" : "OUT", ep->toggle, ep->mxpacketsize, buflen);
 
   /* Allocate an IO buffer if the user buffer does not lie in AHB SRAM */
 
@@ -1346,7 +1346,9 @@ static int lpc17_transfer(FAR struct usbhost_driver_s *drvr,
       goto errout;
     }
 
-  /* Format the endpoint descriptor */
+  /* Format the endpoint descriptor.  This could be a lot simpler if
+   * the OHCI ED structure were exposed outside of the driver.
+   */
  
   lpc17_edinit(ed);
   ed->ctrl = (uint32_t)(ep->funcaddr)     << ED_CONTROL_FA_SHIFT | 
@@ -1366,6 +1368,13 @@ static int lpc17_transfer(FAR struct usbhost_driver_s *drvr,
       dirpid    = GTD_STATUS_DP_OUT;
     }
 
+  /* Set/restore the toggle carry bit */
+
+  if (ep->toggle)
+    {
+      ed->headp = ED_HEADP_C;
+    }
+
   /* Then enqueue the transfer */
 
   priv->tdstatus = TD_CC_NOERROR;
@@ -1411,6 +1420,20 @@ static int lpc17_transfer(FAR struct usbhost_driver_s *drvr,
       ret = -EIO;
     }
 
+  /* Save the toggle carry bit.  This bit is updated each time that an
+   * ED is retired.  This could be a lot simpler if the OHCI ED structure
+   * were exposed outside of the driver.
+   */
+
+  if ((ed->headp & ED_HEADP_C) != 0)
+    {
+      ep->toggle = 1;
+    }
+  else
+    {
+      ep->toggle = 0;
+    }
+
 errout:
   /* Free any temporary IO buffers */
 
diff --git a/nuttx/include/nuttx/usb/ohci.h b/nuttx/include/nuttx/usb/ohci.h
index c20e34b3e..c19b2d3d8 100755
--- a/nuttx/include/nuttx/usb/ohci.h
+++ b/nuttx/include/nuttx/usb/ohci.h
@@ -401,7 +401,7 @@ struct ohci_gtd_s
 
 struct ohci_itd_s
 {
-  volatile uint32_t status;        /* TD status/control bits */
+  volatile uint32_t ctrl;          /* TD status/control bits */
   volatile uint32_t bp0;           /* Buffer page 0 (BP0 */
   volatile uint32_t nexttd;        /* Next TD (NextTD) */
   volatile uint32_t be;            /* Buffer End (BE) */
diff --git a/nuttx/include/nuttx/usb/usbhost.h b/nuttx/include/nuttx/usb/usbhost.h
index 2f02056f6..a83048f68 100644
--- a/nuttx/include/nuttx/usb/usbhost.h
+++ b/nuttx/include/nuttx/usb/usbhost.h
@@ -526,10 +526,10 @@ struct usbhost_driver_s
 struct usbhost_epdesc_s
 {
   uint8_t  addr     : 4; /* Endpoint address */
-  uint8_t  pad1     : 3;
+  uint8_t  pad      : 3;
   uint8_t  in       : 1; /* Direction: 1->IN */
   uint8_t  funcaddr : 7; /* USB address of function containing endpoint */
-  uint8_t  pad2     : 1;
+  uint8_t  toggle   : 1; /* Last toggle (modified by the driver) */
   uint16_t mxpacketsize; /* Max packetsize */
 };
 
-- 
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