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open-ameba/RTL00_SDKV35a/component/os/freertos/freertos_pmu.c
pvvx d108756e9b first commit
2016-11-09 03:56:41 +03:00

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#include "FreeRTOS.h"
#include "freertos_pmu.h"
#include <platform_opts.h>
#include "platform_autoconf.h"
#include "sys_api.h"
#include "sleep_ex_api.h"
#include "gpio_api.h"
#include "us_ticker_api.h"
#include "task.h"
#ifndef portNVIC_SYSTICK_CURRENT_VALUE_REG
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( * ( ( volatile uint32_t * ) 0xe000e018 ) )
#endif
uint32_t missing_tick = 0;
#define FREERTOS_PMU_DISABLE_LOGUART_IN_TICKLESS (0)
static uint32_t wakelock = DEFAULT_WAKELOCK;
static uint32_t wakeup_event = DEFAULT_WAKEUP_EVENT;
freertos_sleep_callback pre_sleep_callback[32] = {NULL};
freertos_sleep_callback post_sleep_callback[32] = {NULL};
#if (configGENERATE_RUN_TIME_STATS == 1)
static u8 last_wakelock_state[32] = {
DEFAULT_WAKELOCK & 0x01, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
};
static u32 last_acquire_wakelock_time[32] = {0};
static u32 hold_wakelock_time[32] = {0};
static u32 base_sys_time = 0;
static u32 sys_sleep_time = 0;
#endif
#if defined(FREERTOS_PMU_TICKLESS_PLL_RESERVED) && (FREERTOS_PMU_TICKLESS_PLL_RESERVED==1)
unsigned char reserve_pll = 1;
#else
unsigned char reserve_pll = 0;
#endif
/* ++++++++ FreeRTOS macro implementation ++++++++ */
/*
* It is called in idle task.
*
* @return true : System is ready to check conditions that if it can enter sleep.
* false : System keep awake.
**/
int freertos_ready_to_sleep() {
return wakelock == 0;
}
/*
* It is called when freertos is going to sleep.
* At this moment, all sleep conditons are satisfied. All freertos' sleep pre-processing are done.
*
* @param expected_idle_time : The time that FreeRTOS expect to sleep.
* If we set this value to 0 then FreeRTOS will do nothing in its sleep function.
**/
void freertos_pre_sleep_processing(unsigned int *expected_idle_time) {
#ifdef CONFIG_SOC_PS_MODULE
uint32_t i;
uint32_t stime;
uint32_t tick_before_sleep;
uint32_t tick_after_sleep;
uint32_t tick_passed;
uint32_t backup_systick_reg;
unsigned char IsDramOn = 1;
unsigned char suspend_sdram = 1;
#if (configGENERATE_RUN_TIME_STATS == 1)
uint32_t kernel_tick_before_sleep;
uint32_t kernel_tick_after_sleep;
#endif
/* To disable freertos sleep function and use our sleep function,
* we can set original expected idle time to 0. */
stime = *expected_idle_time;
*expected_idle_time = 0;
for (i=0; i<32; i++) {
if ( pre_sleep_callback[i] != NULL) {
pre_sleep_callback[i]( stime );
}
}
#if (configGENERATE_RUN_TIME_STATS == 1)
kernel_tick_before_sleep = osKernelSysTick();
#endif
// Store gtimer timestamp before sleep
tick_before_sleep = us_ticker_read();
if ( sys_is_sdram_power_on() == 0 ) {
IsDramOn = 0;
}
if (IsDramOn) {
#if defined(FREERTOS_PMU_TICKLESS_SUSPEND_SDRAM) && (FREERTOS_PMU_TICKLESS_SUSPEND_SDRAM==0)
// sdram is turned on, and we don't want suspend sdram
suspend_sdram = 0;
#endif
} else {
// sdram didn't turned on, we should not suspend it
suspend_sdram = 0;
}
#if (FREERTOS_PMU_DISABLE_LOGUART_IN_TICKLESS)
// config gpio on log uart tx for pull ctrl
HAL_GPIO_PIN gpio_log_uart_tx;
gpio_log_uart_tx.pin_name = gpio_set(PB_0);
gpio_log_uart_tx.pin_mode = DOUT_PUSH_PULL;
HAL_GPIO_Init(&gpio_log_uart_tx);
GpioFunctionChk(PB_0, ENABLE);
sys_log_uart_off();
HAL_GPIO_WritePin(&gpio_log_uart_tx, 1); // pull up log uart tx to avoid power lekage
#endif
backup_systick_reg = portNVIC_SYSTICK_CURRENT_VALUE_REG;
// sleep
sleep_ex_selective(wakeup_event, stime, reserve_pll, suspend_sdram);
portNVIC_SYSTICK_CURRENT_VALUE_REG = backup_systick_reg;
#if (FREERTOS_PMU_DISABLE_LOGUART_IN_TICKLESS)
sys_log_uart_off();
sys_log_uart_on();
#endif
// update kernel tick by calculating passed tick from gtimer
{
// get current gtimer timestamp
tick_after_sleep = us_ticker_read();
// calculated passed time
if (tick_after_sleep > tick_before_sleep) {
tick_passed = tick_after_sleep - tick_before_sleep;
} else {
// overflow
tick_passed = (0xffffffff - tick_before_sleep) + tick_after_sleep;
}
/* If there is a rapid interrupt (<1ms), it makes tick_passed less than 1ms.
* The tick_passed would be rounded and make OS can't step tick.
* We collect the rounded tick_passed into missing_tick and step tick properly.
* */
tick_passed += missing_tick;
if (tick_passed > stime * 1000) {
missing_tick = tick_passed - stime * 1000;
tick_passed = stime * 1000;
} else {
missing_tick = tick_passed % 1000;
}
// update kernel tick
vTaskStepTick( tick_passed/1000 );
}
#if (configGENERATE_RUN_TIME_STATS == 1)
kernel_tick_after_sleep = osKernelSysTick();
sys_sleep_time += (kernel_tick_after_sleep - kernel_tick_before_sleep);
#endif
for (i=0; i<32; i++) {
if ( post_sleep_callback[i] != NULL) {
post_sleep_callback[i]( stime );
}
}
#else
// If PS is not enabled, then use freertos sleep function
#endif
}
void freertos_post_sleep_processing(unsigned int *expected_idle_time) {
#ifndef configSYSTICK_CLOCK_HZ
*expected_idle_time = 1 + ( portNVIC_SYSTICK_CURRENT_VALUE_REG / ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) );
#else
*expected_idle_time = 1 + ( portNVIC_SYSTICK_CURRENT_VALUE_REG / ( configSYSTICK_CLOCK_HZ / configTICK_RATE_HZ ) );
#endif
}
/* -------- FreeRTOS macro implementation -------- */
void acquire_wakelock(uint32_t lock_id) {
wakelock |= lock_id;
#if (configGENERATE_RUN_TIME_STATS == 1)
u32 i;
u32 current_timestamp = osKernelSysTick();
for (i=0; i<32; i++) {
if ( (1<<i & lock_id) && (last_wakelock_state[i] == 0) ) {
last_acquire_wakelock_time[i] = current_timestamp;
last_wakelock_state[i] = 1;
}
}
#endif
}
void release_wakelock(uint32_t lock_id) {
wakelock &= ~lock_id;
#if (configGENERATE_RUN_TIME_STATS == 1)
u32 i;
u32 current_timestamp = osKernelSysTick();
for (i=0; i<32; i++) {
if ( (1<<i & lock_id) && (last_wakelock_state[i] == 1) ) {
hold_wakelock_time[i] += current_timestamp - last_acquire_wakelock_time[i];
last_wakelock_state[i] = 0;
}
}
#endif
}
uint32_t get_wakelock_status() {
return wakelock;
}
#if (configGENERATE_RUN_TIME_STATS == 1)
void get_wakelock_hold_stats( char *pcWriteBuffer ) {
u32 i;
u32 current_timestamp = osKernelSysTick();
*pcWriteBuffer = 0x00;
// print header
sprintf(pcWriteBuffer, "wakelock_id\tholdtime\r\n");
pcWriteBuffer += strlen( pcWriteBuffer );
for (i=0; i<32; i++) {
if (last_wakelock_state[i] == 1) {
sprintf(pcWriteBuffer, "%x\t\t%d\r\n", i, hold_wakelock_time[i] + (current_timestamp - last_acquire_wakelock_time[i]));
} else {
if (hold_wakelock_time[i] > 0) {
sprintf(pcWriteBuffer, "%x\t\t%d\r\n", i, hold_wakelock_time[i]);
}
}
pcWriteBuffer += strlen( pcWriteBuffer );
}
sprintf(pcWriteBuffer, "time passed: %d ms, system sleep %d ms\r\n", current_timestamp - base_sys_time, sys_sleep_time);
}
void clean_wakelock_stat() {
u32 i;
base_sys_time = osKernelSysTick();
for (i=0; i<32; i++) {
hold_wakelock_time[i] = 0;
if (last_wakelock_state[i] == 1) {
last_acquire_wakelock_time[i] = base_sys_time;
}
}
sys_sleep_time = 0;
}
#endif
void add_wakeup_event(uint32_t event) {
wakeup_event |= event;
}
void del_wakeup_event(uint32_t event) {
wakeup_event &= ~event;
// To fulfill tickless design, system timer is required to be wakeup event
wakeup_event |= SLEEP_WAKEUP_BY_STIMER;
}
void register_sleep_callback_by_module( unsigned char is_pre_sleep, freertos_sleep_callback sleep_cb, uint32_t module ) {
u32 i;
for (i=0; i<32; i++) {
if ( module & BIT(i) ) {
if (is_pre_sleep) {
pre_sleep_callback[i] = sleep_cb;
} else {
post_sleep_callback[i] = sleep_cb;
}
}
}
}
void register_pre_sleep_callback( freertos_sleep_callback pre_sleep_cb ) {
register_sleep_callback_by_module(1, pre_sleep_cb, 0x00008000);
}
void register_post_sleep_callback( freertos_sleep_callback post_sleep_cb ) {
register_sleep_callback_by_module(0, post_sleep_cb, 0x00008000);
}
void set_pll_reserved(unsigned char reserve) {
reserve_pll = reserve;
}
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