Add controller for the AUX domain

This commit is contained in:
George Oikonomou 2016-04-19 22:16:56 +01:00
parent 8d6a290382
commit 08dc4b0b21
2 changed files with 259 additions and 0 deletions

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/*
* 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.
*/
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "dev/aux-ctrl.h"
#include "lib/list.h"
#include "ti-lib.h"
#include <stdint.h>
#include <stdbool.h>
/*---------------------------------------------------------------------------*/
LIST(consumers_list);
/*---------------------------------------------------------------------------*/
void
aux_ctrl_register_consumer(aux_consumer_module_t *consumer)
{
bool interrupts_disabled = ti_lib_int_master_disable();
list_add(consumers_list, consumer);
aux_ctrl_power_up();
ti_lib_aux_wuc_clock_enable(consumer->clocks);
while(ti_lib_aux_wuc_clock_status(consumer->clocks) != AUX_WUC_CLOCK_READY);
if(!interrupts_disabled) {
ti_lib_int_master_enable();
}
}
/*---------------------------------------------------------------------------*/
void
aux_ctrl_unregister_consumer(aux_consumer_module_t *consumer)
{
bool interrupts_disabled = ti_lib_int_master_disable();
list_remove(consumers_list, consumer);
aux_ctrl_power_down(false);
if(!interrupts_disabled) {
ti_lib_int_master_enable();
}
}
/*---------------------------------------------------------------------------*/
void
aux_ctrl_power_up()
{
/* Don't if we have no consumers */
if(list_head(consumers_list) == NULL) {
return;
}
ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_WAKEUP);
while(!(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON));
}
/*---------------------------------------------------------------------------*/
void
aux_ctrl_power_down(bool force)
{
aux_consumer_module_t *consumer;
uint32_t clocks_in_use = 0;
if(!force) {
/* Visit all modules and release clocks */
for(consumer = list_head(consumers_list); consumer != NULL;
consumer = consumer->next) {
clocks_in_use |= consumer->clocks;
}
/* If any clocks are still in use, AUX needs to stay powered and clocked */
if(clocks_in_use) {
ti_lib_aon_wuc_aux_power_down_config(AONWUC_CLOCK_SRC_LF);
return;
}
}
/* No clock for AUX in power down */
ti_lib_aon_wuc_aux_power_down_config(AONWUC_NO_CLOCK);
/* Disable retention */
ti_lib_aon_wuc_aux_sram_config(false);
/* Turn off AUX */
ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_ALLOW_SLEEP);
ti_lib_aux_wuc_power_ctrl(AUX_WUC_POWER_OFF);
while(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON);
}
/*---------------------------------------------------------------------------*/

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/*
* 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_ */
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/