Merged in alinjerpelea/nuttx (pull request #925)

configs: spresense: add MSC and USB Composite device

* configs: spresense: add USB Composite device

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

* configs: spresense: add usbmsc configuration

    the usbmsc support has been added and we can add an configuration
    for spresense board

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

* configs: spresense: add button template

    Spresense board does not have buttons and this is a template
    for gpio buttons that can be connected on the external header

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

configs/spresense/src/Makefile

@@ -68,6 +68,10 @@ CSRCS += cxd56_userleds.c
 endif
 endif
 
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += cxd56_buttons.c
+endif
+
 ifeq ($(CONFIG_CXD56_GPIO_IRQ),y)
 CSRCS += cxd56_gpioif.c
 endif
@@ -100,6 +104,10 @@ ifeq ($(CONFIG_USBMSC),y)
 CSRCS += cxd56_usbmsc.c
 endif
 
+ifeq ($(CONFIG_USBDEV_COMPOSITE),y)
+CSRCS += cxd56_composite.c
+endif
+
 ifeq ($(CONFIG_NETDEVICES),y)
 CSRCS += cxd56_netinit.c
 endif

configs/spresense/src/cxd56_buttons.c

@@ -0,0 +1,96 @@
+/****************************************************************************
+ * configs/spresense/src/cxd56_buttons.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * 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 of Sony Semiconductor Solutions Corporation 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/arch.h>
+#include <nuttx/board.h>
+#include <nuttx/irq.h>
+
+#include <arch/board/board.h>
+
+#include "cxd56_gpio.h"
+#include "cxd56_gpioint.h"
+#include "cxd56_pinconfig.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/* Below functions are template to support the Board button for NuttX original
+ * feature. If you support the feature, copy this file into your board
+ * directory and implement the contents.
+ */
+
+/****************************************************************************
+ * Name: board_button_initialize
+ ****************************************************************************/
+
+void board_button_initialize(void)
+{
+}
+
+/****************************************************************************
+ * Name: board_buttons
+ ****************************************************************************/
+
+uint32_t board_buttons(void)
+{
+  uint8_t ret = 0;
+  return ret;
+}
+
+/****************************************************************************
+ * Name: board_button_irq
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+int board_button_irq(int id, xcpt_t irqhandler, FAR void *arg)
+{
+  return OK;
+}
+#endif