Add controller for the AUX domain
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George Oikonomou
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08dc4b0b21
2 changed files with 259 additions and 0 deletions
116
cpu/cc26xx-cc13xx/dev/aux-ctrl.c
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116
cpu/cc26xx-cc13xx/dev/aux-ctrl.c
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/*
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* Copyright (c) 2016, University of Bristol - http://www.bris.ac.uk/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "dev/aux-ctrl.h"
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#include "lib/list.h"
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#include "ti-lib.h"
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#include <stdint.h>
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#include <stdbool.h>
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/*---------------------------------------------------------------------------*/
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LIST(consumers_list);
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/*---------------------------------------------------------------------------*/
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void
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aux_ctrl_register_consumer(aux_consumer_module_t *consumer)
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{
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bool interrupts_disabled = ti_lib_int_master_disable();
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list_add(consumers_list, consumer);
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aux_ctrl_power_up();
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ti_lib_aux_wuc_clock_enable(consumer->clocks);
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while(ti_lib_aux_wuc_clock_status(consumer->clocks) != AUX_WUC_CLOCK_READY);
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if(!interrupts_disabled) {
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ti_lib_int_master_enable();
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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aux_ctrl_unregister_consumer(aux_consumer_module_t *consumer)
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{
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bool interrupts_disabled = ti_lib_int_master_disable();
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list_remove(consumers_list, consumer);
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aux_ctrl_power_down(false);
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if(!interrupts_disabled) {
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ti_lib_int_master_enable();
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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aux_ctrl_power_up()
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{
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/* Don't if we have no consumers */
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if(list_head(consumers_list) == NULL) {
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return;
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}
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ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_WAKEUP);
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while(!(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON));
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}
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/*---------------------------------------------------------------------------*/
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void
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aux_ctrl_power_down(bool force)
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{
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aux_consumer_module_t *consumer;
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uint32_t clocks_in_use = 0;
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if(!force) {
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/* Visit all modules and release clocks */
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for(consumer = list_head(consumers_list); consumer != NULL;
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consumer = consumer->next) {
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clocks_in_use |= consumer->clocks;
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}
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/* If any clocks are still in use, AUX needs to stay powered and clocked */
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if(clocks_in_use) {
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ti_lib_aon_wuc_aux_power_down_config(AONWUC_CLOCK_SRC_LF);
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return;
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}
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}
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/* No clock for AUX in power down */
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ti_lib_aon_wuc_aux_power_down_config(AONWUC_NO_CLOCK);
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/* Disable retention */
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ti_lib_aon_wuc_aux_sram_config(false);
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/* Turn off AUX */
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ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_ALLOW_SLEEP);
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ti_lib_aux_wuc_power_ctrl(AUX_WUC_POWER_OFF);
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while(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON);
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}
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/*---------------------------------------------------------------------------*/
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143
cpu/cc26xx-cc13xx/dev/aux-ctrl.h
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143
cpu/cc26xx-cc13xx/dev/aux-ctrl.h
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/*
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* Copyright (c) 2016, University of Bristol - http://www.bris.ac.uk/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup cc26xx
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* @{
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*
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* \defgroup cc26xx-aux-ctrl CC13xx/CC26xx AUX domain controller
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*
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* CC13xx/CC26xx AUX domain power management controller
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*
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* @{
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*
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* \file
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* Header file for the management of the CC13xx/CC26xx AUX domain
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*/
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/*---------------------------------------------------------------------------*/
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#ifndef AUX_CTRL_H_
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#define AUX_CTRL_H_
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "ti-lib.h"
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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/**
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* \brief The data structure to be used for modules that require access to AUX
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*
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* The clocks field should specify the clocks (within AUX) that your module
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* requires in order to perform its functionality. Those clocks are an ORd
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* value of AUX_WUC_xxxx_CLOCK. For instance, the oscillators module specifies
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* AUX_WUC_OSCCTRL_CLOCK | AUX_WUC_SMPH_CLOCK
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*/
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typedef struct aux_consumer_module {
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struct aux_consumer_module *next;
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uint32_t clocks;
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} aux_consumer_module_t;
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Register a module that no longer requires access to the AUX power domain
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* \param consumer A pointer to the data structure of your AUX consumer
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*
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* Call this function if you are developing a module that requires access to
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* hardware within the AUX PD. Calling this function will achieve a number of
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* things:
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*
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* - It will power up the AUX PD
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* - It will enable the AUX clocks that you require
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*
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* If you call this function, AUX will stay powered-on and clocked during deep
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* sleep, and retention will be enabled (so that you can e.g. use the sensor
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* controller to monitor peripherals while the main MCU in deep sleep). If you
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* do not need AUX enabled during deep sleep, you must release it by calling
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* aux_ctrl_unregister_consumer()
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*
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* \sa aux_ctrl_unregister_consumer
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*/
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void aux_ctrl_register_consumer(aux_consumer_module_t *consumer);
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/**
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* \brief Deregister a module that no longer requires access to the AUX power domain
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* \param consumer A pointer to the data structure of your AUX consumer
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*
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* When your module is finished using features provided from within the AUX
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* domain, you should call this function to signal that AUX is no longer
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* required, so that the LPM module can power it down in deep sleep. If there
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* are no more registered consumers left, this function will also power down
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* AUX.
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*
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* \sa aux_ctrl_register_consumer
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* \sa aux_ctrl_power_down
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*/
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void aux_ctrl_unregister_consumer(aux_consumer_module_t *consumer);
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/**
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* \brief Power-up the AUX power domain
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*
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* This function will power up the AUX power-domain, but only if there are
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* registered consumers for it. If there are not, the PD will stay off.
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*
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* This function will automatically get called by the LPM module whenever the
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* chip comes out of deep sleep.
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*
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* User applications will normally not need to call this function. if you are
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* developing a user application that requires access, to AUX, you should
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* normally call aux_ctrl_register_consumer(), which will automatically power
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* up AUX for you, if it's not already powered.
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*/
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void aux_ctrl_power_up(void);
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/**
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* \brief Power down the AUX power domain
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* \param force Force the power down irrespective of registered consumers
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*
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* This function will shut down the AUX power-domain.
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*
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* The shutdown is unconditional if force is true. If force is false and there
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* are registered consumers, the power-down will be suppressed.
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*
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* This function will automatically get called by the LPM module whenever the
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* chip tries to enter deep sleep or shuts down.
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*
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* User applications will normally not need to call this function. if you are
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* developing a user application that no longer requires access, to AUX, you
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* should normally simply release it by calling aux_ctrl_unregister_consumer().
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* If no other consumers are using AUX, then the lpm module will shut it down.
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*/
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void aux_ctrl_power_down(bool force);
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/*---------------------------------------------------------------------------*/
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#endif /* AUX_CTRL_H_ */
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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