Add MCI CD GPIO

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2585 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 134 insertions, 0 deletions

diff --git a/nuttx/configs/sam3u-ek/src/up_mmcsd.c b/nuttx/configs/sam3u-ek/src/up_mmcsd.c
new file mode 100755
index 000000000..45762ee28
--- /dev/null
+++ b/nuttx/configs/sam3u-ek/src/up_mmcsd.c
@@ -0,0 +1,134 @@
+/************************************************************************************
+ * configs/sam3u-ek/src/up_mmcsd.c
+ * arch/arm/src/board/up_mmcsd.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 <stdbool.h>
+#include <debug.h>
+
+#include "sam3u_internal.h"
+#include "sam3uek_internal.h"
+
+#ifdef CONFIG_SAM3U_HSMCI
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* This needs to be extended.  The card detect GPIO must be configured as an interrupt.
+ * when the interrupt indicating that a card has been inserted or removed is received,
+ * this function must call sio_mediachange() to handle that event.  See
+ * arch/arm/src/sam3u/sam3u_internal.h for more information.
+ */
+
+#ifdef GPIO_MCI_CD
+#  warning "Card detect interrupt handling needed"
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name: sam3u_hsmciinit
+ *
+ * Description:
+ *   Initialize HSMCI support 
+ *
+ ****************************************************************************/
+
+int sam3u_hsmciinit(void)
+{
+#if GPIO_MCI_CD
+  sam3u_configgpio(GPIO_MCI_CD);
+#endif
+#if GPIO_MCI_WP
+  sam3u_configgpio(GPIO_MCI_WP);
+#endif
+  return OK;
+}
+
+/****************************************************************************
+ * Name: sam3u_cardinserted
+ *
+ * Description:
+ *   Check if a card is inserted into the selected HSMCI slot
+ *
+ ****************************************************************************/
+
+bool sam3u_cardinserted(unsigned char slot)
+{
+  if (slot == 0)
+    {
+#ifdef GPIO_MCI_CD
+      return !sam3u_gpioread(GPIO_MCI_CD);
+#else
+      return true;
+#endif
+    }
+  return false;
+}
+
+/****************************************************************************
+ * Name: sam3u_writeprotected
+ *
+ * Description:
+ *   Check if a card is inserted into the selected HSMCI slot
+ *
+ ****************************************************************************/
+
+bool sam3u_writeprotected(unsigned char slot)
+{
+  if (slot == 0)
+    {
+#ifdef GPIO_MCI_WP
+      return sam3u_gpioread(GPIO_MCI_WP);
+#else
+      return false;
+#endif
+    }
+  return false;
+}
+
+#endif /* CONFIG_SAM3U_HSMCI */