maa: add global maa.h and maa.hpp and stop using /usr/include/maa/

* pkg-config now only sees maa.h & maa.hpp
* usage of maa/*.{h,hpp} is still allowed
* examples updated to use maa.{h,hpp}

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

api/maa/spi.h

@@ -0,0 +1,121 @@
+/*
+ * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+/**
+ * @file
+ * @brief System Packet Interface
+ *
+ * This file defines the spi interface for libmaa
+ *
+ * @snippet spi_mcp4261.c Interesting
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdint.h>
+
+#include "maa.h"
+
+/**
+ * Opaque pointer definition to the internal struct _spi
+ */
+typedef struct _spi* maa_spi_context;
+
+/**
+ * Initialise SPI_context, uses board mapping. Sets the muxes
+ *
+ * @param bus Bus to use, as listed in platform definition, normally 0
+ * @return Spi context or NULL
+ */
+maa_spi_context maa_spi_init(int bus);
+
+/**
+ * Set the SPI device mode. see spidev 0-3.
+ *
+ * @param dev The Spi context
+ * @param mode The SPI mode, See Linux spidev
+ * @return Spi context or NULL
+ */
+maa_result_t maa_spi_mode(maa_spi_context dev,unsigned short mode);
+
+/** Set the SPI device operating clock frequency.
+ *
+ * @param dev the Spi context
+ * @param hz the frequency in hz
+ * @return maa_spi_context The returned initialised SPI context
+ */
+maa_result_t maa_spi_frequency(maa_spi_context dev, int hz);
+
+/** Write Single Byte to the SPI device.
+ *
+ * @param dev The Spi context
+ * @param data Data to send
+ * @return Data received on the miso line
+ */
+uint8_t maa_spi_write(maa_spi_context dev, uint8_t data);
+
+/** Write Buffer of bytes to the SPI device.
+ *
+ * @param dev The Spi context
+ * @param data to send
+ * @param length elements within buffer, Max 4096
+ * @return Data received on the miso line, same length as passed in
+ */
+uint8_t* maa_spi_write_buf(maa_spi_context dev, uint8_t* data, int length);
+
+/**
+ * Change the SPI lsb mode
+ *
+ * @param dev The Spi context
+ * @param lsb Use least significant bit transmission. 0 for msbi
+ * @return Result of operation
+ */
+maa_result_t maa_spi_lsbmode(maa_spi_context dev, maa_boolean_t lsb);
+
+/**
+ * Set bits per mode on transaction, defaults at 8
+ *
+ * @param dev The Spi context
+ * @param bits bits per word
+ * @return Result of operation
+ */
+maa_result_t maa_spi_bit_per_word(maa_spi_context dev, unsigned int bits);
+
+/**
+ * De-inits an maa_spi_context device
+ *
+ * @param dev The Spi context
+ * @return Result of operation
+ */
+maa_result_t maa_spi_stop(maa_spi_context dev);
+
+#ifdef __cplusplus
+}
+#endif