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

4 files changed, 397 insertions, 205 deletions

diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h b/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h
index fdb14b4d7..fc635eb7d 100755
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h
+++ b/nuttx/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/nuttx/arch/arm/src/lpc17xx/lpc17_spi.c b/nuttx/arch/arm/src/lpc17xx/lpc17_spi.c
index e5cc2b3e3..f0a2b1264 100755
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_spi.c
+++ b/nuttx/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/nuttx/arch/arm/src/lpc17xx/lpc17_ssp.c b/nuttx/arch/arm/src/lpc17xx/lpc17_ssp.c
index e945ced40..893a1df99 100755
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_ssp.c
+++ b/nuttx/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)
 {
diff --git a/nuttx/configs/olimex-lpc1766stk/src/up_ssp.c b/nuttx/configs/olimex-lpc1766stk/src/up_ssp.c
index f423b2a35..b3d1b0540 100755
--- a/nuttx/configs/olimex-lpc1766stk/src/up_ssp.c
+++ b/nuttx/configs/olimex-lpc1766stk/src/up_ssp.c
@@ -1,199 +1,380 @@
-/************************************************************************************

- * configs/olimex-lpc1766stk/src/up_ssp.c

- * arch/arm/src/board/up_ssp.c

- *

- *   Copyright (C) 2010 Gregory Nutt. All rights reserved.

- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- *

- * 1. Redistributions of source code must retain the above copyright

- *    notice, this list of conditions and the following disclaimer.

- * 2. Redistributions in binary form must reproduce the above copyright

- *    notice, this list of conditions and the following disclaimer in

- *    the documentation and/or other materials provided with the

- *    distribution.

- * 3. Neither the name NuttX nor the names of its contributors may be

- *    used to endorse or promote products derived from this software

- *    without specific prior written permission.

- *

- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

- * POSSIBILITY OF SUCH DAMAGE.

- *

- ************************************************************************************/

-

-/************************************************************************************

- * Included Files

- ************************************************************************************/

-

-#include <nuttx/config.h>

-

-#include <stdint.h>

-#include <stdbool.h>

-#include <debug.h>

-

-#include <nuttx/spi.h>

-#include <arch/board/board.h>

-

-#include "up_arch.h"

-#include "chip.h"

-#include "lpc17_internal.h"

-#include "lpc1766stk_internal.h"

-

-#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)

-

-/************************************************************************************

- * Definitions

- ************************************************************************************/

-

-/* The following enable debug output from this file (needs CONFIG_DEBUG too).

- * 

- * CONFIG_SSP_DEBUG - Define to enable basic SSP debug

- * CONFIG_SSP_VERBOSE - Define to enable verbose SSP debug

- */

-

-#ifdef CONFIG_SSP_DEBUG

-#  define sspdbg  lldbg

-#  ifdef CONFIG_SSP_VERBOSE

-#    define sspvdbg lldbg

-#  else

-#    define sspvdbg(x...)

-#  endif

-#else

-#  undef CONFIG_SSP_VERBOSE

-#  define sspdbg(x...)

-#  define sspvdbg(x...)

-#endif

-

-/* Dump GPIO registers */

-

-#ifdef CONFIG_SSP_VERBOSE

-#  define ssp_dumpssp0gpio(m) lpc17_dumpgpio(LPC1766STK_LCD_CS, m)

-#  define ssp_dumpssp1gpio(m) lpc17_dumpgpio(LPC1766STK_MMC_CS, m)

-#else

-#  define ssp_dumpssp0gpio(m)

-#  define ssp_dumpssp1gpio(m)

-#endif

-

-/************************************************************************************

- * Private Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Public Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Name: lpc17_sspinitialize

- *

- * Description:

- *   Called to configure SPI chip select GPIO pins for the LPC1766-STK.

- *

- ************************************************************************************/

-

-void weak_function lpc17_sspinitialize(void)

-{

-  /* Configure the SSP0 chip select GPIOs.  Only the Nokia LCD is connected to SSP0 */

-

-#ifdef CONFIG_LPC17_SSP0

-  ssp_dumpssp0gpio("BEFORE SSP0 Initialization");

-  lpc17_configgpio(LPC1766STK_LCD_CS);

-  ssp_dumpssp0gpio("AFTER SSP0 Initialization");

-#endif

-

-  /* Configure SSP1 chip select GPIOs.  Only the SD/MMC card slot is connected to SSP1 */

-

-#ifdef CONFIG_LPC17_SSP1

-  ssp_dumpssp0gpio("BEFORE SSP1 Initialization");

-  lpc17_configgpio(LPC1766STK_MMC_CS);

-

-  /* Also configure the SD/MMC power GPIO (but leave power off).  This really has

-   * nothing to do with SSP, but does belong with other SD/MMC GPIO configuration

-   * settings.

-   */

-

-  lpc17_configgpio(LPC1766STK_MMC_PWR);

-  ssp_dumpssp0gpio("AFTER SSP1 Initialization");

-#endif

-}

-

-/************************************************************************************

- * Name:  lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status

- *

- * Description:

- *   The external functions, lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status 

- *   must be provided by board-specific logic.  They are implementations of the select

- *   and status methods of the SPI interface defined by struct spi_ops_s (see

- *   include/nuttx/spi.h). All other methods (including up_spiinitialize())

- *   are provided by common LPC17xx logic.  To use this common SPI logic on your

- *   board:

- *

- *   1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select

- *      pins.

- *   2. Provide lpc17_ssp0/ssp1select() and lpc17_ssp0/ssp1status() functions

- *      in your board-specific logic.  These functions will perform chip selection

- *      and status operations using GPIOs in the way your board is configured.

- *   3. Add a calls to up_spiinitialize() in your low level application

- *      initialization logic

- *   4. The handle returned by up_spiinitialize() may then be used to bind the

- *      SPI driver to higher level logic (e.g., calling 

- *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to

- *      the SPI MMC/SD driver).

- *

- ************************************************************************************/

-

-#ifdef CONFIG_LPC17_SSP0

-void  lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)

-{

-  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");

-  if (devid == SPIDEV_DISPLAY)

-    {

-      /* Assert/de-assert the CS pin to the card */

-

-      ssp_dumpssp0gpio("lpc17_ssp0select() Entry");

-      lpc17_gpiowrite(LPC1766STK_LCD_CS, !selected);

-      ssp_dumpssp0gpio("lpc17_ssp0select() Exit");

-    }

-}

-

-uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)

-{

-  sspdbg("Returning nothing\n");

-  return 0;

-}

-#endif

-

-#ifdef CONFIG_LPC17_SSP1

-void  lpc17_ssp1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)

-{

-  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");

-  if (devid == SPIDEV_MMCSD)

-    {

-      /* Assert/de-assert the CS pin to the card */

-

-      ssp_dumpssp1gpio("lpc17_ssp1select() Entry");

-      lpc17_gpiowrite(LPC1766STK_MMC_CS, !selected);

-      ssp_dumpssp1gpio("lpc17_ssp1select() Exit");

-    }

-}

-

-uint8_t lpc17_ssp1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)

-{

-  sspdbg("Returning SPI_STATUS_PRESENT\n");

-  return SPI_STATUS_PRESENT;

-}

-#endif

-

-#endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */

+/************************************************************************************
+ * configs/olimex-lpc1766stk/src/up_ssp.c
+ * arch/arm/src/board/up_ssp.c
+ *
+ *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+#ifdef CONFIG_SPI_CALLBACK
+#include <nuttx/irq.h>
+#endif
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "lpc17_internal.h"
+#include "lpc1766stk_internal.h"
+
+#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Configuration ************************************************************/
+
+#ifdef CONFIG_SPI_CALLBACK
+#  ifndef CONFIG_GPIO_IRQ
+#    warning "CONFIG_GPIO_IRQ is required to support CONFIG_SPI_CALLBACK"
+#  endif
+#endif
+
+/* Debug ********************************************************************/
+/* The following enable debug output from this file (needs CONFIG_DEBUG too).
+ * 
+ * CONFIG_SSP_DEBUG - Define to enable basic SSP debug
+ * CONFIG_SSP_VERBOSE - Define to enable verbose SSP debug
+ */
+
+#ifdef CONFIG_SSP_DEBUG
+#  define sspdbg  lldbg
+#  ifdef CONFIG_SSP_VERBOSE
+#    define sspvdbg lldbg
+#  else
+#    define sspvdbg(x...)
+#  endif
+#else
+#  undef CONFIG_SSP_VERBOSE
+#  define sspdbg(x...)
+#  define sspvdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#ifdef CONFIG_SSP_VERBOSE
+#  define ssp_dumpssp0gpio(m) lpc17_dumpgpio(LPC1766STK_LCD_CS, m)
+#  define ssp_dumpssp1gpio(m) lpc17_dumpgpio(LPC1766STK_MMC_CS, m)
+#else
+#  define ssp_dumpssp0gpio(m)
+#  define ssp_dumpssp1gpio(m)
+#endif
+
+/************************************************************************************
+ * Private Types
+ ************************************************************************************/
+
+/* This structure describes on media change callback */
+
+#ifdef CONFIG_SPI_CALLBACK
+struct lpc17_mediachange_s
+{
+  spi_mediachange_t callback; /* The media change callback */
+  FAR void          *arg;     /* Callback argument */
+};
+#endif
+
+/************************************************************************************
+ * Private Data
+ ************************************************************************************/
+
+/* Registered media change callback */
+
+#ifdef CONFIG_SPI_CALLBACK
+#ifdef CONFIG_LPC17_SSP0
+static struct lpc17_mediachange_s g_ssp0callback;
+#endif
+#ifdef CONFIG_LPC17_SSP1
+static struct lpc17_mediachange_s g_ssp1callback;
+#endif
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: ssp_cdirqsetup
+ *
+ * Description:
+ *   Setup to receive a card detection interrupt
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_SPI_CALLBACK
+static void ssp_cdirqsetup(int irq, xcpt_t irqhandler)
+{
+  irqstate_t flags;
+
+  /* Disable interrupts until we are done */
+
+  flags = irqsave();
+
+  /* Configure the interrupt.  Either attach and enable the new
+   * interrupt or disable and detach the old interrupt handler.
+   */
+
+  if (irqhandler)
+    {
+      /* Attach then enable the new interrupt handler */
+
+      (void)irq_attach(irq, irqhandler);
+      up_enable_irq(irq);
+    }
+  else
+    {
+      /* Disable then then detach the the old interrupt handler */
+
+      up_disable_irq(irq);
+      (void)irq_detach(irq);
+    }
+}
+#endif
+
+/************************************************************************************
+ * Name: ssp0/1_cdinterrupt
+ *
+ * Description:
+ *   Handle card detection interrupt
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_SPI_CALLBACK
+#ifdef CONFIG_LPC17_SSP0
+static int ssp0_cdinterrupt(int irq, FAR void *context)
+{
+  /* Invoke the media change callback */
+
+  if (g_ssp0callback.callback)
+    {
+      g_ssp0callback.callback(g_ssp0callback.arg);
+    }
+  return OK;
+}
+#endif
+
+#ifdef CONFIG_LPC17_SSP1
+static int ssp1_cdinterrupt(int irq, FAR void *context)
+{
+  /* Invoke the media change callback */
+
+  if (g_ssp1callback.callback)
+    {
+      g_ssp1callback.callback(g_ssp1callback.arg);
+    }
+  return OK;
+}
+#endif
+#endif
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc17_sspinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the LPC1766-STK.
+ *
+ ************************************************************************************/
+
+void weak_function lpc17_sspinitialize(void)
+{
+  /* Configure the SSP0 chip select GPIOs.  Only the Nokia LCD is connected to SSP0 */
+
+#ifdef CONFIG_LPC17_SSP0
+  ssp_dumpssp0gpio("BEFORE SSP0 Initialization");
+  lpc17_configgpio(LPC1766STK_LCD_CS);
+  ssp_dumpssp0gpio("AFTER SSP0 Initialization");
+#endif
+
+  /* Configure SSP1 chip select GPIOs.  Only the SD/MMC card slot is connected to SSP1 */
+
+#ifdef CONFIG_LPC17_SSP1
+  ssp_dumpssp0gpio("BEFORE SSP1 Initialization");
+  lpc17_configgpio(LPC1766STK_MMC_CS);
+
+  /* Also configure the SD/MMC power GPIO (but leave power off).  This really has
+   * nothing to do with SSP, but does belong with other SD/MMC GPIO configuration
+   * settings.
+   */
+
+  lpc17_configgpio(LPC1766STK_MMC_PWR);
+  ssp_dumpssp0gpio("AFTER SSP1 Initialization");
+#endif
+
+#ifdef CONFIG_SPI_CALLBACK
+  /* If there were any CD detect pins for the LPC1766-STK, this is where
+   * they would be configured.
+   */
+#endif
+}
+
+/************************************************************************************
+ * Name:  lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status
+ *
+ * Description:
+ *   The external functions, lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status 
+ *   must be provided by board-specific logic.  They are implementations of the select
+ *   and status methods of the SPI interface defined by struct spi_ops_s (see
+ *   include/nuttx/spi.h). All other methods (including up_spiinitialize())
+ *   are provided by common LPC17xx logic.  To use this common SPI logic on your
+ *   board:
+ *
+ *   1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select
+ *      pins.
+ *   2. Provide lpc17_ssp0/ssp1select() and lpc17_ssp0/ssp1status() functions
+ *      in your board-specific logic.  These functions will perform chip selection
+ *      and status operations using GPIOs in the way your board is configured.
+ *   3. Add a calls to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   4. The handle returned by up_spiinitialize() may then be used to bind the
+ *      SPI driver to higher level logic (e.g., calling 
+ *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ *      the SPI MMC/SD driver).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_LPC17_SSP0
+void  lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  if (devid == SPIDEV_DISPLAY)
+    {
+      /* Assert/de-assert the CS pin to the card */
+
+      ssp_dumpssp0gpio("lpc17_ssp0select() Entry");
+      lpc17_gpiowrite(LPC1766STK_LCD_CS, !selected);
+      ssp_dumpssp0gpio("lpc17_ssp0select() Exit");
+    }
+}
+
+uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning nothing\n");
+  return 0;
+}
+#endif
+
+#ifdef CONFIG_LPC17_SSP1
+void  lpc17_ssp1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  if (devid == SPIDEV_MMCSD)
+    {
+      /* Assert/de-assert the CS pin to the card */
+
+      ssp_dumpssp1gpio("lpc17_ssp1select() Entry");
+      lpc17_gpiowrite(LPC1766STK_MMC_CS, !selected);
+      ssp_dumpssp1gpio("lpc17_ssp1select() Exit");
+    }
+}
+
+uint8_t lpc17_ssp1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning SPI_STATUS_PRESENT\n");
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+/************************************************************************************
+ * Name: lpc17_ssp0/1register
+ *
+ * Description:
+ *   If the board supports a card detect callback to inform the SPI-based
+ *   MMC/SD drvier when an SD card is inserted or removed, then
+ *   CONFIG_SPI_CALLBACK should be defined and the following function(s) must
+ *   must be implemented.  These functiosn implements the registercallback
+ *   method of the SPI interface (see include/nuttx/spi.h for details)
+ *
+ * Input Parameters:
+ *   dev -      Device-specific state data
+ *   callback - The funtion to call on the media change
+ *   arg -      A caller provided value to return with the callback
+ *
+ * Returned Value:
+ *   0 on success; negated errno on failure.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_SPI_CALLBACK
+#ifdef CONFIG_LPC17_SSP0
+  /* If there were any CD detect pins on the LPC1766-STK, this is how the
+   * would be configured.
+   */
+
+int lpc17_ssp0register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, void *arg)
+{
+  /* Save the callback information */
+
+#if 0
+  g_ssp0callback.callback = callback;
+  g_ssp0callback.arg      = arg;
+
+  /* Setup the interrupt */
+
+  spi_cdirqsetup(LPC1766STK_SPICD_IRQ, ssp0_cdinterrupt);
+#endif
+  return OK;
+}
+#endif
+
+#ifdef CONFIG_LPC17_SSP1
+int lpc17_ssp1register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, void *arg)
+{
+  /* Save the callback information */
+
+#if 0
+  g_ssp1callback.callback = callback;
+  g_ssp1callback.arg      = arg;
+
+  /* Setup the interrupt */
+
+  spi_cdirqsetup(LPC1766STK_SPICD_IRQ, ssp1_cdinterrupt);
+#endif
+  return OK;
+}
+#endif
+#endif
+
+#endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */