Add 1st cut SPI driver for SPI MMC

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1034 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 102 insertions, 0 deletions

diff --git a/nuttx/include/nuttx/spi.h b/nuttx/include/nuttx/spi.h
new file mode 100644
index 000000000..0729d6403
--- /dev/null
+++ b/nuttx/include/nuttx/spi.h
@@ -0,0 +1,102 @@
+/****************************************************************************
+ * drivers/usbdev/sp.c
+ *
+ *   Copyright(C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * This logic emulates the Prolific PL2303 serial/USB converter
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __NUTTX_SPI_H
+#define __NUTTX_SPI_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* SPI status bits -- Some dedicated for SPI MMC support and may have not
+ * relationship to SPI other than needed by the SPI MMC interface
+ */
+
+#define SPI_STATUS_PRESENT     0x01 /* MMC card present */
+#define SPI_STATUS_WRPROTECTED 0x02 /* MMC card write protected */
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct spi_ops_s
+{
+  void   (*select)(boolean select);
+  uint32 (*setclockfrequency)(uint32 frequency);
+  ubyte  (*status)(void);
+  ubyte  (*sndbyte)(ubyte ch);
+  ubyte  (*waitready)(void);
+  void   (*sndblock)(ubyte *data, int datlen);
+  void   (*recvblock)(ubyte *data, int datlen);
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN void up_spinitialize(int port);
+
+/****************************************************************************
+ * Name: up_spigetvtable
+ *
+ * Description:
+ *   Return the vtable for the selected SPI port
+ *
+ ****************************************************************************/
+
+EXTERN FAR const struct spi_ops_s *up_spigetvtable(int port);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+#endif /* __NUTTX_SPI_H */