From 1a73aaa668754f0c18e5b730fd39d29b52532c99 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Fri, 6 Jan 2012 01:58:03 +0000
Subject: [PATCH] Add hooks for SD media change callbacks

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4267 42af7a65-404d-4744-a932-0658087f49c3
---
 arch/arm/src/lpc17xx/lpc17_internal.h |  2 ++
 arch/arm/src/lpc17xx/lpc17_spi.c      |  9 ++++++++-
 arch/arm/src/lpc17xx/lpc17_ssp.c      | 12 +++++++-----
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/arch/arm/src/lpc17xx/lpc17_internal.h b/arch/arm/src/lpc17xx/lpc17_internal.h
index fdb14b4d71..fc635eb7d9 100755
--- a/arch/arm/src/lpc17xx/lpc17_internal.h
+++ b/arch/arm/src/lpc17xx/lpc17_internal.h
@@ -655,6 +655,7 @@ EXTERN void ssp_flush(FAR struct spi_dev_s *dev);
  *
  ****************************************************************************/
 
+#ifdef CONFIG_SPI_CALLBACK
 #ifdef CONFIG_LPC17_SPI
 EXTERN int lpc17_spiregister(FAR struct spi_dev_s *dev,
                              spi_mediachange_t callback, void *arg);
@@ -669,6 +670,7 @@ EXTERN int lpc17_ssp0register(FAR struct spi_dev_s *dev,
 EXTERN int lpc17_ssp1register(FAR struct spi_dev_s *dev,
                               spi_mediachange_t callback, void *arg);
 #endif
+#endif
 
 /****************************************************************************
  * Name: lpc17_dmainitialize
diff --git a/arch/arm/src/lpc17xx/lpc17_spi.c b/arch/arm/src/lpc17xx/lpc17_spi.c
index e5cc2b3e3f..f0a2b1264b 100755
--- a/arch/arm/src/lpc17xx/lpc17_spi.c
+++ b/arch/arm/src/lpc17xx/lpc17_spi.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/src/lpc17xx/lpc17_spi.c
  *
- *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2010, 2012 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -104,6 +104,8 @@
  * Private Types
  ****************************************************************************/
 
+/* This structure descibes the state of the SSP driver */
+
 struct lpc17_spidev_s
 {
   struct spi_dev_s spidev;     /* Externally visible part of the SPI interface */
@@ -153,7 +155,11 @@ static const struct spi_ops_s g_spiops =
   .send              = spi_send,
   .sndblock          = spi_sndblock,
   .recvblock         = spi_recvblock,
+#ifdef CONFIG_SPI_CALLBACK
+  .registercallback  = lpc17_spiregister, /* Provided externally */
+#else
   .registercallback  = 0,                 /* Not implemented */
+#endif
 };
 
 static struct lpc17_spidev_s g_spidev =
@@ -597,5 +603,6 @@ FAR struct spi_dev_s *up_spiinitialize(int port)
 #endif
   return &priv->spidev;
 }
+
 #endif /* CONFIG_LPC17_SPI */
 
diff --git a/arch/arm/src/lpc17xx/lpc17_ssp.c b/arch/arm/src/lpc17xx/lpc17_ssp.c
index e945ced404..893a1df997 100755
--- a/arch/arm/src/lpc17xx/lpc17_ssp.c
+++ b/arch/arm/src/lpc17xx/lpc17_ssp.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/src/lpc17xx/lpc17_ssp.c
  *
- *   Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2010-2012 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -108,6 +108,8 @@
  * Private Types
  ****************************************************************************/
 
+/* This structure descibes the state of the SSP driver */
+
 struct lpc17_sspdev_s
 {
   struct spi_dev_s spidev;     /* Externally visible part of the SPI interface */
@@ -235,7 +237,7 @@ static struct lpc17_sspdev_s g_ssp1dev =
  * Private Functions
  ****************************************************************************/
 
-/************************************************************************************
+/****************************************************************************
  * Name: ssp_getreg
  *
  * Description:
@@ -248,14 +250,14 @@ static struct lpc17_sspdev_s g_ssp1dev =
  * Returned Value:
  *   The contents of the 32-bit register
  *
- ************************************************************************************/
+ ****************************************************************************/
 
 static inline uint32_t ssp_getreg(FAR struct lpc17_sspdev_s *priv, uint8_t offset)
 {
   return getreg32(priv->sspbase + (uint32_t)offset);
 }
 
-/************************************************************************************
+/****************************************************************************
  * Name: ssp_putreg
  *
  * Description:
@@ -269,7 +271,7 @@ static inline uint32_t ssp_getreg(FAR struct lpc17_sspdev_s *priv, uint8_t offse
  * Returned Value:
  *   None
  *
- ************************************************************************************/
+ ***************************************************************************/
 
 static inline void ssp_putreg(FAR struct lpc17_sspdev_s *priv, uint8_t offset, uint32_t value)
 {