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300
component/os/freertos/freertos_pmu.c
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300
component/os/freertos/freertos_pmu.c
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#include "FreeRTOS.h"
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#include "freertos_pmu.h"
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#include <platform_opts.h>
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#include "platform_autoconf.h"
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#include "sys_api.h"
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#include "sleep_ex_api.h"
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#include "gpio_api.h"
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#ifndef portNVIC_SYSTICK_CURRENT_VALUE_REG
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#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( * ( ( volatile uint32_t * ) 0xe000e018 ) )
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#endif
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uint32_t missing_tick = 0;
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#define FREERTOS_PMU_DISABLE_LOGUART_IN_TICKLESS (0)
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static uint32_t wakelock = DEFAULT_WAKELOCK;
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static uint32_t wakeup_event = DEFAULT_WAKEUP_EVENT;
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freertos_sleep_callback pre_sleep_callback[32] = {NULL};
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freertos_sleep_callback post_sleep_callback[32] = {NULL};
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#if (configGENERATE_RUN_TIME_STATS == 1)
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static u8 last_wakelock_state[32] = {
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DEFAULT_WAKELOCK & 0x01, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0
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};
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static u32 last_acquire_wakelock_time[32] = {0};
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static u32 hold_wakelock_time[32] = {0};
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static u32 base_sys_time = 0;
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static u32 sys_sleep_time = 0;
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#endif
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#if defined(FREERTOS_PMU_TICKLESS_PLL_RESERVED) && (FREERTOS_PMU_TICKLESS_PLL_RESERVED==1)
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unsigned char reserve_pll = 1;
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#else
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unsigned char reserve_pll = 0;
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#endif
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/* ++++++++ FreeRTOS macro implementation ++++++++ */
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/*
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* It is called in idle task.
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*
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* @return true : System is ready to check conditions that if it can enter sleep.
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* false : System keep awake.
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**/
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int freertos_ready_to_sleep() {
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return wakelock == 0;
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}
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/*
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* It is called when freertos is going to sleep.
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* At this moment, all sleep conditons are satisfied. All freertos' sleep pre-processing are done.
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*
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* @param expected_idle_time : The time that FreeRTOS expect to sleep.
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* If we set this value to 0 then FreeRTOS will do nothing in its sleep function.
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**/
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void freertos_pre_sleep_processing(unsigned int *expected_idle_time) {
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#ifdef CONFIG_SOC_PS_MODULE
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uint32_t i;
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uint32_t stime;
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uint32_t tick_before_sleep;
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uint32_t tick_after_sleep;
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uint32_t tick_passed;
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uint32_t backup_systick_reg;
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unsigned char IsDramOn = 1;
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unsigned char suspend_sdram = 1;
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#if (configGENERATE_RUN_TIME_STATS == 1)
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uint32_t kernel_tick_before_sleep;
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uint32_t kernel_tick_after_sleep;
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#endif
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/* To disable freertos sleep function and use our sleep function,
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* we can set original expected idle time to 0. */
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stime = *expected_idle_time;
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*expected_idle_time = 0;
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for (i=0; i<32; i++) {
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if ( pre_sleep_callback[i] != NULL) {
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pre_sleep_callback[i]( stime );
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}
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}
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#if (configGENERATE_RUN_TIME_STATS == 1)
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kernel_tick_before_sleep = osKernelSysTick();
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#endif
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// Store gtimer timestamp before sleep
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tick_before_sleep = us_ticker_read();
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if ( sys_is_sdram_power_on() == 0 ) {
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IsDramOn = 0;
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}
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if (IsDramOn) {
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#if defined(FREERTOS_PMU_TICKLESS_SUSPEND_SDRAM) && (FREERTOS_PMU_TICKLESS_SUSPEND_SDRAM==0)
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// sdram is turned on, and we don't want suspend sdram
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suspend_sdram = 0;
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#endif
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} else {
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// sdram didn't turned on, we should not suspend it
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suspend_sdram = 0;
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}
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#if (FREERTOS_PMU_DISABLE_LOGUART_IN_TICKLESS)
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// config gpio on log uart tx for pull ctrl
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HAL_GPIO_PIN gpio_log_uart_tx;
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gpio_log_uart_tx.pin_name = gpio_set(PB_0);
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gpio_log_uart_tx.pin_mode = DOUT_PUSH_PULL;
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HAL_GPIO_Init(&gpio_log_uart_tx);
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GpioFunctionChk(PB_0, ENABLE);
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sys_log_uart_off();
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HAL_GPIO_WritePin(&gpio_log_uart_tx, 1); // pull up log uart tx to avoid power lekage
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#endif
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backup_systick_reg = portNVIC_SYSTICK_CURRENT_VALUE_REG;
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// sleep
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sleep_ex_selective(wakeup_event, stime, reserve_pll, suspend_sdram);
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portNVIC_SYSTICK_CURRENT_VALUE_REG = backup_systick_reg;
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#if (FREERTOS_PMU_DISABLE_LOGUART_IN_TICKLESS)
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sys_log_uart_off();
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sys_log_uart_on();
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#endif
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// update kernel tick by calculating passed tick from gtimer
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{
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// get current gtimer timestamp
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tick_after_sleep = us_ticker_read();
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// calculated passed time
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if (tick_after_sleep > tick_before_sleep) {
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tick_passed = tick_after_sleep - tick_before_sleep;
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} else {
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// overflow
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tick_passed = (0xffffffff - tick_before_sleep) + tick_after_sleep;
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}
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/* If there is a rapid interrupt (<1ms), it makes tick_passed less than 1ms.
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* The tick_passed would be rounded and make OS can't step tick.
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* We collect the rounded tick_passed into missing_tick and step tick properly.
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* */
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tick_passed += missing_tick;
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if (tick_passed > stime * 1000) {
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missing_tick = tick_passed - stime * 1000;
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tick_passed = stime * 1000;
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} else {
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missing_tick = tick_passed % 1000;
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}
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// update kernel tick
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vTaskStepTick( tick_passed/1000 );
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}
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#if (configGENERATE_RUN_TIME_STATS == 1)
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kernel_tick_after_sleep = osKernelSysTick();
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sys_sleep_time += (kernel_tick_after_sleep - kernel_tick_before_sleep);
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#endif
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for (i=0; i<32; i++) {
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if ( post_sleep_callback[i] != NULL) {
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post_sleep_callback[i]( stime );
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}
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}
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#else
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// If PS is not enabled, then use freertos sleep function
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#endif
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}
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void freertos_post_sleep_processing(unsigned int *expected_idle_time) {
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#ifndef configSYSTICK_CLOCK_HZ
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*expected_idle_time = 1 + ( portNVIC_SYSTICK_CURRENT_VALUE_REG / ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) );
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#else
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*expected_idle_time = 1 + ( portNVIC_SYSTICK_CURRENT_VALUE_REG / ( configSYSTICK_CLOCK_HZ / configTICK_RATE_HZ ) );
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#endif
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}
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/* -------- FreeRTOS macro implementation -------- */
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void acquire_wakelock(uint32_t lock_id) {
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wakelock |= lock_id;
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#if (configGENERATE_RUN_TIME_STATS == 1)
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u32 i;
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u32 current_timestamp = osKernelSysTick();
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for (i=0; i<32; i++) {
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if ( (1<<i & lock_id) && (last_wakelock_state[i] == 0) ) {
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last_acquire_wakelock_time[i] = current_timestamp;
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last_wakelock_state[i] = 1;
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}
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}
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#endif
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}
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void release_wakelock(uint32_t lock_id) {
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wakelock &= ~lock_id;
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#if (configGENERATE_RUN_TIME_STATS == 1)
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u32 i;
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u32 current_timestamp = osKernelSysTick();
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for (i=0; i<32; i++) {
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if ( (1<<i & lock_id) && (last_wakelock_state[i] == 1) ) {
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hold_wakelock_time[i] += current_timestamp - last_acquire_wakelock_time[i];
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last_wakelock_state[i] = 0;
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}
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}
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#endif
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}
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uint32_t get_wakelock_status() {
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return wakelock;
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}
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#if (configGENERATE_RUN_TIME_STATS == 1)
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void get_wakelock_hold_stats( char *pcWriteBuffer ) {
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u32 i;
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u32 current_timestamp = osKernelSysTick();
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*pcWriteBuffer = 0x00;
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// print header
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sprintf(pcWriteBuffer, "wakelock_id\tholdtime\r\n");
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pcWriteBuffer += strlen( pcWriteBuffer );
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for (i=0; i<32; i++) {
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if (last_wakelock_state[i] == 1) {
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sprintf(pcWriteBuffer, "%x\t\t%d\r\n", i, hold_wakelock_time[i] + (current_timestamp - last_acquire_wakelock_time[i]));
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} else {
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if (hold_wakelock_time[i] > 0) {
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sprintf(pcWriteBuffer, "%x\t\t%d\r\n", i, hold_wakelock_time[i]);
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}
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}
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pcWriteBuffer += strlen( pcWriteBuffer );
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}
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sprintf(pcWriteBuffer, "time passed: %d ms, system sleep %d ms\r\n", current_timestamp - base_sys_time, sys_sleep_time);
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}
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void clean_wakelock_stat() {
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u32 i;
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base_sys_time = osKernelSysTick();
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for (i=0; i<32; i++) {
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hold_wakelock_time[i] = 0;
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if (last_wakelock_state[i] == 1) {
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last_acquire_wakelock_time[i] = base_sys_time;
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}
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}
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sys_sleep_time = 0;
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}
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#endif
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void add_wakeup_event(uint32_t event) {
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wakeup_event |= event;
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}
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void del_wakeup_event(uint32_t event) {
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wakeup_event &= ~event;
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// To fulfill tickless design, system timer is required to be wakeup event
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wakeup_event |= SLEEP_WAKEUP_BY_STIMER;
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}
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void register_sleep_callback_by_module( unsigned char is_pre_sleep, freertos_sleep_callback sleep_cb, uint32_t module ) {
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u32 i;
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for (i=0; i<32; i++) {
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if ( module & BIT(i) ) {
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if (is_pre_sleep) {
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pre_sleep_callback[i] = sleep_cb;
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} else {
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post_sleep_callback[i] = sleep_cb;
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}
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}
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}
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}
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void register_pre_sleep_callback( freertos_sleep_callback pre_sleep_cb ) {
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register_sleep_callback_by_module(1, pre_sleep_cb, 0x00008000);
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}
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void register_post_sleep_callback( freertos_sleep_callback post_sleep_cb ) {
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register_sleep_callback_by_module(0, post_sleep_cb, 0x00008000);
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}
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void set_pll_reserved(unsigned char reserve) {
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reserve_pll = reserve;
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}
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