nes-proj/cpu/cc26xx/lpm.h

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/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
* 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-lpm CC26xx Low-Power management
*
* CC26xx low-power operation
*
* @{
*
* \file
* Header file for the management of CC26xx low-power operation
*/
/*---------------------------------------------------------------------------*/
#ifndef LPM_H_
#define LPM_H_
/*---------------------------------------------------------------------------*/
#include "pwr_ctrl.h"
#include <stdint.h>
/*---------------------------------------------------------------------------*/
#define LPM_MODE_SLEEP 1
#define LPM_MODE_DEEP_SLEEP 2
#define LPM_MODE_SHUTDOWN 3
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#define LPM_MODE_MAX_SUPPORTED LPM_MODE_DEEP_SLEEP
/*---------------------------------------------------------------------------*/
#define LPM_DOMAIN_NONE 0
#define LPM_DOMAIN_SERIAL PRCM_DOMAIN_SERIAL
#define LPM_DOMAIN_PERIPH PRCM_DOMAIN_PERIPH
/*---------------------------------------------------------------------------*/
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typedef struct lpm_registered_module {
struct lpm_registered_module *next;
uint8_t (*request_max_pm)(void);
void (*shutdown)(uint8_t mode);
void (*wakeup)(void);
uint32_t domain_lock;
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} lpm_registered_module_t;
/*---------------------------------------------------------------------------*/
/**
* \brief Declare a variable to be used in order to get notifications from LPM
* \param n the variable name to be declared
* \param m A pointer to a function which will tell the LPM module the max
* PM this module is willing to handle. This function will return
* LPM_MODE_SLEEP, LPM_MODE_DEEP_SLEEP etc. The LPM module will ask all
* registered modules and will trigger the highest LPM permitted
* \param s A pointer to a function which will receive a notification just
* before entering the low power mode. The callee can prepare for the
* imminent LPM state. The argument to this function will be the
* upcoming low power mode. This function can e.g. turn off a
* peripheral before the LPM module shuts down the power domain.
* \param w A pointer to a function which will be called just after we have
* woken up. This can be used to e.g. turn a peripheral back on. This
* function is in charge of turning power domains back on. This
* function will normally be called within an interrupt context.
* \param l Power domain locks, if any are required. The module can request
* that the SERIAL or PERIPH PD be kept powered up at the transition
* to deep sleep. This field can be a bitwise OR of LPM_DOMAIN_x, so
* if required multiple domains can be kept powered.
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*/
#define LPM_MODULE(n, m, s, w, l) static lpm_registered_module_t n = \
{ NULL, m, s, w, l }
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/*---------------------------------------------------------------------------*/
/**
* \brief Drop the cortex to sleep / deep sleep and shut down peripherals
*
* Whether the cortex will drop to sleep or deep sleep is configurable. The
* exact peripherals which will be shut down is also configurable
*/
void lpm_drop(void);
/**
* \brief Enter sleep mode
*/
void lpm_sleep(void);
/**
* \brief Put the chip in shutdown power mode
* \param wakeup_pin The GPIO pin which will wake us up. Must be IOID_0 etc...
* \param io_pull Pull configuration for the shutdown pin: IOC_NO_IOPULL,
* IOC_IOPULL_UP or IOC_IOPULL_DOWN
* \param wake_on High or Low (IOC_WAKE_ON_LOW or IOC_WAKE_ON_HIGH)
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*/
void lpm_shutdown(uint32_t wakeup_pin, uint32_t io_pull, uint32_t wake_on);
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/**
* \brief Register a module for LPM notifications.
* \param module A pointer to the data structure with the module definition
*
* When the LPM module is about to drop to some low power mode, it will first
* notify all modules about this.
*
* This function must not be called before the module has been initialised
* with lpm_init(). The code does not perform checks: This is the caller's
* responsibility.
*/
void lpm_register_module(lpm_registered_module_t *module);
/**
* \brief Unregister a module from LPM notifications.
* \param module A pointer to the data structure with the module definition
*
* When a previously registered module is no longer interested in LPM
* notifications, this function can be used to unregister it.
*/
void lpm_unregister_module(lpm_registered_module_t *module);
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/**
* \brief Initialise the low-power mode management module
*/
void lpm_init(void);
/**
* \brief Sets an IOID to a default state
* \param ioid IOID_0...
*
* This will set ioid to sw control, input, no pull. Input buffer and output
* driver will both be disabled
*
* The function will do nothing if ioid == IOID_UNUSED, so the caller does not
* have to check board configuration before calling this.
*/
void lpm_pin_set_default_state(uint32_t ioid);
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/*---------------------------------------------------------------------------*/
#endif /* LPM_H_ */
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/