Add EA3131 configuration

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2434 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 140 insertions, 0 deletions

diff --git a/nuttx/configs/ea3131/src/up_spi.c b/nuttx/configs/ea3131/src/up_spi.c
new file mode 100755
index 000000000..3e2b6cf46
--- /dev/null
+++ b/nuttx/configs/ea3131/src/up_spi.c
@@ -0,0 +1,140 @@
+/************************************************************************************
+ * configs/ea3131/src/up_spi.c
+ * arch/arm/src/board/up_spi.c
+ *
+ *   Copyright (C) 2009 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 "lpc313x_internal.h"
+#include "ea3131_internal.h"
+
+#ifdef CONFIG_LPC313X_SPI
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#undef SPI_DEBUG   /* Define to enable debug */
+#undef SPI_VERBOSE /* Define to enable verbose debug */
+
+#ifdef SPI_DEBUG
+#  define spidbg  lldbg
+#  ifdef SPI_VERBOSE
+#    define spivdbg lldbg
+#  else
+#    define spivdbg(x...)
+#  endif
+#else
+#  undef SPI_VERBOSE
+#  define spidbg(x...)
+#  define spivdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc313x_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the EA3131 board.
+ *
+ ************************************************************************************/
+
+void weak_function lpc313x_spiinitialize(void)
+{
+  /* NOTE: Clocking for SPI has already been provided.
+   *       Configurations of SPI pins is performed in lpc313x_spi.c.
+   *       Here, we only initialize chip select pins unique to the board
+   *       architecture.
+   */
+
+}
+
+/****************************************************************************
+ * Name:  lpc313x_spiselect and lpc313x_spistatus
+ *
+ * Description:
+ *   The external functions, lpc313x_spiselect and lpc313x_spistatus 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 LPC313X logic.  To use this common SPI logic on your
+ *   board:
+ *
+ *   1. Provide logic in lpc313x_boardinitialize() to configure SPI chip select
+ *      pins.
+ *   2. Provide lpc313x_spiselect() and lpc313x_spistatus() 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).
+ *
+ ****************************************************************************/
+
+void lpc313x_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+}
+
+uint8_t lpc313x_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  return SPI_STATUS_PRESENT;
+}
+
+#endif /* CONFIG_LPC313X_SPI  */