osd-contiki/cpu/cc26xx-cc13xx/dev/aux-ctrl.h

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2016-04-19 23:16:56 +02:00
/*
* Copyright (c) 2016, University of Bristol - http://www.bris.ac.uk/
* All rights reserved.
*
* 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 the copyright holder 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 HOLDER 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.
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup cc26xx
* @{
*
* \defgroup cc26xx-aux-ctrl CC13xx/CC26xx AUX domain controller
*
* CC13xx/CC26xx AUX domain power management controller
*
* @{
*
* \file
* Header file for the management of the CC13xx/CC26xx AUX domain
*/
/*---------------------------------------------------------------------------*/
#ifndef AUX_CTRL_H_
#define AUX_CTRL_H_
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "ti-lib.h"
#include <stdint.h>
/*---------------------------------------------------------------------------*/
/**
* \brief The data structure to be used for modules that require access to AUX
*
* The clocks field should specify the clocks (within AUX) that your module
* requires in order to perform its functionality. Those clocks are an ORd
* value of AUX_WUC_xxxx_CLOCK. For instance, the oscillators module specifies
* AUX_WUC_OSCCTRL_CLOCK | AUX_WUC_SMPH_CLOCK
*/
typedef struct aux_consumer_module {
struct aux_consumer_module *next;
uint32_t clocks;
} aux_consumer_module_t;
/*---------------------------------------------------------------------------*/
/**
* \brief Register a module that no longer requires access to the AUX power domain
* \param consumer A pointer to the data structure of your AUX consumer
*
* Call this function if you are developing a module that requires access to
* hardware within the AUX PD. Calling this function will achieve a number of
* things:
*
* - It will power up the AUX PD
* - It will enable the AUX clocks that you require
*
* If you call this function, AUX will stay powered-on and clocked during deep
* sleep, and retention will be enabled (so that you can e.g. use the sensor
* controller to monitor peripherals while the main MCU in deep sleep). If you
* do not need AUX enabled during deep sleep, you must release it by calling
* aux_ctrl_unregister_consumer()
*
* \sa aux_ctrl_unregister_consumer
*/
void aux_ctrl_register_consumer(aux_consumer_module_t *consumer);
/**
* \brief Deregister a module that no longer requires access to the AUX power domain
* \param consumer A pointer to the data structure of your AUX consumer
*
* When your module is finished using features provided from within the AUX
* domain, you should call this function to signal that AUX is no longer
* required, so that the LPM module can power it down in deep sleep. If there
* are no more registered consumers left, this function will also power down
* AUX.
*
* \sa aux_ctrl_register_consumer
* \sa aux_ctrl_power_down
*/
void aux_ctrl_unregister_consumer(aux_consumer_module_t *consumer);
/**
* \brief Power-up the AUX power domain
*
* This function will power up the AUX power-domain, but only if there are
* registered consumers for it. If there are not, the PD will stay off.
*
* This function will automatically get called by the LPM module whenever the
* chip comes out of deep sleep.
*
* User applications will normally not need to call this function. if you are
* developing a user application that requires access, to AUX, you should
* normally call aux_ctrl_register_consumer(), which will automatically power
* up AUX for you, if it's not already powered.
*/
void aux_ctrl_power_up(void);
/**
* \brief Power down the AUX power domain
* \param force Force the power down irrespective of registered consumers
*
* This function will shut down the AUX power-domain.
*
* The shutdown is unconditional if force is true. If force is false and there
* are registered consumers, the power-down will be suppressed.
*
* This function will automatically get called by the LPM module whenever the
* chip tries to enter deep sleep or shuts down.
*
* User applications will normally not need to call this function. if you are
* developing a user application that no longer requires access, to AUX, you
* should normally simply release it by calling aux_ctrl_unregister_consumer().
* If no other consumers are using AUX, then the lpm module will shut it down.
*/
void aux_ctrl_power_down(bool force);
/*---------------------------------------------------------------------------*/
#endif /* AUX_CTRL_H_ */
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/