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/gpio.h

@@ -0,0 +1,195 @@
+/*
+ * 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 General Purpose IO
+ *
+ * Gpio is the General Purpose IO interface to libmaa. It's features depends on
+ * the board type used, it can use gpiolibs (exported via a kernel module
+ * through sysfs), or memory mapped IO via a /dev/uio device or /dev/mem
+ * depending again on the board configuratio, or memory mapped IO via a
+ * /dev/uio device or /dev/mem depending again on the board configuration
+ *
+ * @snippet gpio_read6.c Interesting
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef SWIGPYTHON
+#include <Python.h>
+#endif
+
+#include <stdio.h>
+#include <pthread.h>
+
+#include "maa.h"
+
+/**
+ * Opaque pointer definition to the internal struct _gpio
+ */
+typedef struct _gpio* maa_gpio_context;
+
+/**
+ * Gpio Output modes
+ */
+typedef enum {
+    MAA_GPIO_STRONG     = 0, /**< Default. Strong high and low */
+    MAA_GPIO_PULLUP     = 1, /**< Resistive High */
+    MAA_GPIO_PULLDOWN   = 2, /**< Resistive Low */
+    MAA_GPIO_HIZ        = 3  /**< High Z State */
+} gpio_mode_t;
+
+/**
+ * Gpio Direction options
+ */
+typedef enum {
+    MAA_GPIO_OUT    = 0, /**< Output. A Mode can also be set */
+    MAA_GPIO_IN     = 1  /**< Input */
+} gpio_dir_t;
+
+/**
+ * Gpio Edge types for interupts
+ */
+typedef enum {
+    MAA_GPIO_EDGE_NONE    = 0, /**< No interrupt on Gpio */
+    MAA_GPIO_EDGE_BOTH    = 1, /**< Interupt on rising & falling */
+    MAA_GPIO_EDGE_RISING  = 2, /**< Interupt on rising only */
+    MAA_GPIO_EDGE_FALLING = 3  /**< Interupt on falling only */
+} gpio_edge_t;
+
+/**
+ * Initialise gpio_context, based on board number
+ *
+ *  @param pin Pin number read from the board, i.e IO3 is 3
+ *  @returns gpio context or NULL
+ */
+maa_gpio_context maa_gpio_init(int pin);
+
+/**
+ * Initialise gpio context without any mapping to a pin
+ *
+ * @param gpiopin gpio pin as listed in SYSFS
+ * @return gpio context or NULL
+ */
+maa_gpio_context maa_gpio_init_raw(int gpiopin);
+
+/**
+ * Set the edge mode on the gpio
+ *
+ * @param dev The Gpio context
+ * @param mode The edge mode to set the gpio into
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_edge_mode(maa_gpio_context dev, gpio_edge_t mode);
+
+/**
+ * Set an interupt on pin
+ *
+ * @param dev The Gpio context
+ * @param edge The edge mode to set the gpio into
+ * @param fptr Function pointer to function to be called when interupt is
+ * triggered
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_isr(maa_gpio_context dev, gpio_edge_t edge, void (*fptr)(void));
+
+/**
+ * Stop the current interupt watcher on this Gpio, and set the Gpio edge mode
+ * to MAA_GPIO_EDGE_NONE
+ *
+ * @param dev The Gpio context
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_isr_exit(maa_gpio_context dev);
+
+/**
+ * Set Gpio Output Mode,
+ *
+ * @param dev The Gpio context
+ * @param mode The Gpio Output Mode
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_mode(maa_gpio_context dev, gpio_mode_t mode);
+
+/**
+ * Set Gpio direction
+ *
+ * @param dev The Gpio context
+ * @param dir The direction of the Gpio
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_dir(maa_gpio_context dev, gpio_dir_t dir);
+
+/**
+ * Close the Gpio context
+ * - Will free the memory for the context and unexport the Gpio
+ *
+ * @param dev The Gpio context
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_close(maa_gpio_context dev);
+
+/**
+ * Read the Gpio value.
+ *
+ * @param dev The Gpio context
+ * @return Result of operation
+ */
+int maa_gpio_read(maa_gpio_context dev);
+
+/**
+ * Write to the Gpio Value.
+ *
+ * @param dev The Gpio context
+ * @param value Integer value to write
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_write(maa_gpio_context dev, int value);
+
+/**
+ * Change ownership of the context.
+ *
+ * @param dev The Gpio context
+ * @param owner Does this context own the pin
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_owner(maa_gpio_context dev, maa_boolean_t owner);
+
+/**
+ * Enable using memory mapped io instead of sysfs
+ *
+ * @param dev The Gpio context
+ * @param mmap Use mmap instead of sysfs
+ * @return Result of operation
+ */
+maa_result_t maa_gpio_use_mmaped(maa_gpio_context dev, maa_boolean_t mmap);
+
+#ifdef __cplusplus
+}
+#endif