esp-idf/components/esp32/pm_esp32.c

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// Copyright 2016-2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <sys/param.h>
#include "esp_attr.h"
#include "esp_err.h"
#include "esp_pm.h"
#include "esp_log.h"
#include "esp32/clk.h"
#include "esp_private/crosscore_int.h"
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#include "soc/rtc.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
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#include "freertos/xtensa_timer.h"
#include "xtensa/core-macros.h"
#include "esp_private/pm_impl.h"
#include "esp_private/pm_trace.h"
#include "esp_private/esp_timer_impl.h"
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#include "esp32/pm.h"
global: move the soc component out of the common list This MR removes the common dependency from every IDF components to the SOC component. Currently, in the ``idf_functions.cmake`` script, we include the header path of SOC component by default for all components. But for better code organization (or maybe also benifits to the compiling speed), we may remove the dependency to SOC components for most components except the driver and kernel related components. In CMAKE, we have two kinds of header visibilities (set by include path visibility): (Assume component A --(depends on)--> B, B is the current component) 1. public (``COMPONENT_ADD_INCLUDEDIRS``): means this path is visible to other depending components (A) (visible to A and B) 2. private (``COMPONENT_PRIV_INCLUDEDIRS``): means this path is only visible to source files inside the component (visible to B only) and we have two kinds of depending ways: (Assume component A --(depends on)--> B --(depends on)--> C, B is the current component) 1. public (```COMPONENT_REQUIRES```): means B can access to public include path of C. All other components rely on you (A) will also be available for the public headers. (visible to A, B) 2. private (``COMPONENT_PRIV_REQUIRES``): means B can access to public include path of C, but don't propagate this relation to other components (A). (visible to B) 1. remove the common requirement in ``idf_functions.cmake``, this makes the SOC components invisible to all other components by default. 2. if a component (for example, DRIVER) really needs the dependency to SOC, add a private dependency to SOC for it. 3. some other components that don't really depends on the SOC may still meet some errors saying "can't find header soc/...", this is because it's depended component (DRIVER) incorrectly include the header of SOC in its public headers. Moving all this kind of #include into source files, or private headers 4. Fix the include requirements for some file which miss sufficient #include directives. (Previously they include some headers by the long long long header include link) This is a breaking change. Previous code may depends on the long include chain. You may need to include the following headers for some files after this commit: - soc/soc.h - soc/soc_memory_layout.h - driver/gpio.h - esp_sleep.h The major broken include chain includes: 1. esp_system.h no longer includes esp_sleep.h. The latter includes driver/gpio.h and driver/touch_pad.h. 2. ets_sys.h no longer includes soc/soc.h 3. freertos/portmacro.h no longer includes soc/soc_memory_layout.h some peripheral headers no longer includes their hw related headers, e.g. rom/gpio.h no longer includes soc/gpio_pins.h and soc/gpio_reg.h BREAKING CHANGE
2019-04-03 05:17:38 +00:00
#include "esp_sleep.h"
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/* CCOMPARE update timeout, in CPU cycles. Any value above ~600 cycles will work
* for the purpose of detecting a deadlock.
*/
#define CCOMPARE_UPDATE_TIMEOUT 1000000
/* When changing CCOMPARE, don't allow changes if the difference is less
* than this. This is to prevent setting CCOMPARE below CCOUNT.
*/
#define CCOMPARE_MIN_CYCLES_IN_FUTURE 1000
/* When light sleep is used, wake this number of microseconds earlier than
* the next tick.
*/
#define LIGHT_SLEEP_EARLY_WAKEUP_US 100
/* Minimal divider at which REF_CLK_FREQ can be obtained */
#define REF_CLK_DIV_MIN 10
#define MHZ 1000000
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#ifdef CONFIG_PM_PROFILING
#define WITH_PROFILING
#endif
static portMUX_TYPE s_switch_lock = portMUX_INITIALIZER_UNLOCKED;
/* The following state variables are protected using s_switch_lock: */
/* Current sleep mode; When switching, contains old mode until switch is complete */
static pm_mode_t s_mode = PM_MODE_CPU_MAX;
/* True when switch is in progress */
static volatile bool s_is_switching;
/* When switch is in progress, this is the mode we are switching into */
static pm_mode_t s_new_mode = PM_MODE_CPU_MAX;
/* Number of times each mode was locked */
static size_t s_mode_lock_counts[PM_MODE_COUNT];
/* Bit mask of locked modes. BIT(i) is set iff s_mode_lock_counts[i] > 0. */
static uint32_t s_mode_mask;
/* Divider and multiplier used to adjust (ccompare - ccount) duration.
* Only set to non-zero values when switch is in progress.
*/
static uint32_t s_ccount_div;
static uint32_t s_ccount_mul;
#if CONFIG_FREERTOS_USE_TICKLESS_IDLE
/* Indicates if light sleep entry was skipped in vApplicationSleep for given CPU.
* This in turn gets used in IDLE hook to decide if `waiti` needs
* to be invoked or not.
*/
static bool s_skipped_light_sleep[portNUM_PROCESSORS];
#if portNUM_PROCESSORS == 2
/* When light sleep is finished on one CPU, it is possible that the other CPU
* will enter light sleep again very soon, before interrupts on the first CPU
* get a chance to run. To avoid such situation, set a flag for the other CPU to
* skip light sleep attempt.
*/
static bool s_skip_light_sleep[portNUM_PROCESSORS];
#endif // portNUM_PROCESSORS == 2
#endif // CONFIG_FREERTOS_USE_TICKLESS_IDLE
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/* Indicates to the ISR hook that CCOMPARE needs to be updated on the given CPU.
* Used in conjunction with cross-core interrupt to update CCOMPARE on the other CPU.
*/
static volatile bool s_need_update_ccompare[portNUM_PROCESSORS];
/* A flag indicating that Idle hook has run on a given CPU;
* Next interrupt on the same CPU will take s_rtos_lock_handle.
*/
static bool s_core_idle[portNUM_PROCESSORS];
/* When no RTOS tasks are active, these locks are released to allow going into
* a lower power mode. Used by ISR hook and idle hook.
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*/
static esp_pm_lock_handle_t s_rtos_lock_handle[portNUM_PROCESSORS];
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/* Lookup table of CPU frequency configs to be used in each mode.
* Initialized by esp_pm_impl_init and modified by esp_pm_configure.
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*/
rtc_cpu_freq_config_t s_cpu_freq_by_mode[PM_MODE_COUNT];
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/* Whether automatic light sleep is enabled */
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static bool s_light_sleep_en = false;
/* When configuration is changed, current frequency may not match the
* newly configured frequency for the current mode. This is an indicator
* to the mode switch code to get the actual current frequency instead of
* relying on the current mode.
*/
static bool s_config_changed = false;
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#ifdef WITH_PROFILING
/* Time, in microseconds, spent so far in each mode */
static pm_time_t s_time_in_mode[PM_MODE_COUNT];
/* Timestamp, in microseconds, when the mode switch last happened */
static pm_time_t s_last_mode_change_time;
/* User-readable mode names, used by esp_pm_impl_dump_stats */
static const char* s_mode_names[] = {
"SLEEP",
"APB_MIN",
"APB_MAX",
"CPU_MAX"
};
#endif // WITH_PROFILING
static const char* TAG = "pm_esp32";
static void update_ccompare(void);
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static void do_switch(pm_mode_t new_mode);
static void leave_idle(void);
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static void on_freq_update(uint32_t old_ticks_per_us, uint32_t ticks_per_us);
pm_mode_t esp_pm_impl_get_mode(esp_pm_lock_type_t type, int arg)
{
(void) arg;
if (type == ESP_PM_CPU_FREQ_MAX) {
return PM_MODE_CPU_MAX;
} else if (type == ESP_PM_APB_FREQ_MAX) {
return PM_MODE_APB_MAX;
} else if (type == ESP_PM_NO_LIGHT_SLEEP) {
return PM_MODE_APB_MIN;
} else {
// unsupported mode
abort();
}
}
esp_err_t esp_pm_configure(const void* vconfig)
{
#ifndef CONFIG_PM_ENABLE
return ESP_ERR_NOT_SUPPORTED;
#endif
const esp_pm_config_esp32_t* config = (const esp_pm_config_esp32_t*) vconfig;
#ifndef CONFIG_FREERTOS_USE_TICKLESS_IDLE
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if (config->light_sleep_enable) {
return ESP_ERR_NOT_SUPPORTED;
}
#endif
int min_freq_mhz = config->min_freq_mhz;
int max_freq_mhz = config->max_freq_mhz;
if (min_freq_mhz > max_freq_mhz) {
return ESP_ERR_INVALID_ARG;
}
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rtc_cpu_freq_config_t freq_config;
if (!rtc_clk_cpu_freq_mhz_to_config(min_freq_mhz, &freq_config)) {
ESP_LOGW(TAG, "invalid min_freq_mhz value (%d)", min_freq_mhz);
return ESP_ERR_INVALID_ARG;
}
int xtal_freq_mhz = (int) rtc_clk_xtal_freq_get();
if (min_freq_mhz < xtal_freq_mhz && min_freq_mhz * MHZ / REF_CLK_FREQ < REF_CLK_DIV_MIN) {
ESP_LOGW(TAG, "min_freq_mhz should be >= %d", REF_CLK_FREQ * REF_CLK_DIV_MIN / MHZ);
return ESP_ERR_INVALID_ARG;
}
if (!rtc_clk_cpu_freq_mhz_to_config(max_freq_mhz, &freq_config)) {
ESP_LOGW(TAG, "invalid max_freq_mhz value (%d)", max_freq_mhz);
return ESP_ERR_INVALID_ARG;
}
int apb_max_freq = max_freq_mhz; /* CPU frequency in APB_MAX mode */
if (max_freq_mhz == 240) {
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/* We can't switch between 240 and 80/160 without disabling PLL,
* so use 240MHz CPU frequency when 80MHz APB frequency is requested.
*/
apb_max_freq = 240;
} else if (max_freq_mhz == 160 || max_freq_mhz == 80) {
/* Otherwise, can use 80MHz
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* CPU frequency when 80MHz APB frequency is requested.
*/
apb_max_freq = 80;
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}
apb_max_freq = MAX(apb_max_freq, min_freq_mhz);
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ESP_LOGI(TAG, "Frequency switching config: "
"CPU_MAX: %d, APB_MAX: %d, APB_MIN: %d, Light sleep: %s",
max_freq_mhz,
apb_max_freq,
min_freq_mhz,
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config->light_sleep_enable ? "ENABLED" : "DISABLED");
portENTER_CRITICAL(&s_switch_lock);
rtc_clk_cpu_freq_mhz_to_config(max_freq_mhz, &s_cpu_freq_by_mode[PM_MODE_CPU_MAX]);
rtc_clk_cpu_freq_mhz_to_config(apb_max_freq, &s_cpu_freq_by_mode[PM_MODE_APB_MAX]);
rtc_clk_cpu_freq_mhz_to_config(min_freq_mhz, &s_cpu_freq_by_mode[PM_MODE_APB_MIN]);
s_cpu_freq_by_mode[PM_MODE_LIGHT_SLEEP] = s_cpu_freq_by_mode[PM_MODE_APB_MIN];
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s_light_sleep_en = config->light_sleep_enable;
s_config_changed = true;
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portEXIT_CRITICAL(&s_switch_lock);
return ESP_OK;
}
static pm_mode_t IRAM_ATTR get_lowest_allowed_mode(void)
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{
/* TODO: optimize using ffs/clz */
if (s_mode_mask >= BIT(PM_MODE_CPU_MAX)) {
return PM_MODE_CPU_MAX;
} else if (s_mode_mask >= BIT(PM_MODE_APB_MAX)) {
return PM_MODE_APB_MAX;
} else if (s_mode_mask >= BIT(PM_MODE_APB_MIN) || !s_light_sleep_en) {
return PM_MODE_APB_MIN;
} else {
return PM_MODE_LIGHT_SLEEP;
}
}
void IRAM_ATTR esp_pm_impl_switch_mode(pm_mode_t mode,
pm_mode_switch_t lock_or_unlock, pm_time_t now)
{
bool need_switch = false;
uint32_t mode_mask = BIT(mode);
portENTER_CRITICAL_SAFE(&s_switch_lock);
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uint32_t count;
if (lock_or_unlock == MODE_LOCK) {
count = ++s_mode_lock_counts[mode];
} else {
count = s_mode_lock_counts[mode]--;
}
if (count == 1) {
if (lock_or_unlock == MODE_LOCK) {
s_mode_mask |= mode_mask;
} else {
s_mode_mask &= ~mode_mask;
}
need_switch = true;
}
pm_mode_t new_mode = s_mode;
if (need_switch) {
new_mode = get_lowest_allowed_mode();
#ifdef WITH_PROFILING
if (s_last_mode_change_time != 0) {
pm_time_t diff = now - s_last_mode_change_time;
s_time_in_mode[s_mode] += diff;
}
s_last_mode_change_time = now;
#endif // WITH_PROFILING
}
portEXIT_CRITICAL_SAFE(&s_switch_lock);
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if (need_switch && new_mode != s_mode) {
do_switch(new_mode);
}
}
/**
* @brief Update clock dividers in esp_timer and FreeRTOS, and adjust CCOMPARE
* values on both CPUs.
* @param old_ticks_per_us old CPU frequency
* @param ticks_per_us new CPU frequency
*/
static void IRAM_ATTR on_freq_update(uint32_t old_ticks_per_us, uint32_t ticks_per_us)
{
uint32_t old_apb_ticks_per_us = MIN(old_ticks_per_us, 80);
uint32_t apb_ticks_per_us = MIN(ticks_per_us, 80);
/* Update APB frequency value used by the timer */
if (old_apb_ticks_per_us != apb_ticks_per_us) {
esp_timer_impl_update_apb_freq(apb_ticks_per_us);
}
/* Calculate new tick divisor */
_xt_tick_divisor = ticks_per_us * MHZ / XT_TICK_PER_SEC;
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int core_id = xPortGetCoreID();
if (s_rtos_lock_handle[core_id] != NULL) {
ESP_PM_TRACE_ENTER(CCOMPARE_UPDATE, core_id);
/* ccount_div and ccount_mul are used in esp_pm_impl_update_ccompare
* to calculate new CCOMPARE value.
*/
s_ccount_div = old_ticks_per_us;
s_ccount_mul = ticks_per_us;
/* Update CCOMPARE value on this CPU */
update_ccompare();
#if portNUM_PROCESSORS == 2
/* Send interrupt to the other CPU to update CCOMPARE value */
int other_core_id = (core_id == 0) ? 1 : 0;
s_need_update_ccompare[other_core_id] = true;
esp_crosscore_int_send_freq_switch(other_core_id);
int timeout = 0;
while (s_need_update_ccompare[other_core_id]) {
if (++timeout == CCOMPARE_UPDATE_TIMEOUT) {
assert(false && "failed to update CCOMPARE, possible deadlock");
}
}
#endif // portNUM_PROCESSORS == 2
s_ccount_mul = 0;
s_ccount_div = 0;
ESP_PM_TRACE_EXIT(CCOMPARE_UPDATE, core_id);
}
}
/**
* Perform the switch to new power mode.
* Currently only changes the CPU frequency and adjusts clock dividers.
* No light sleep yet.
* @param new_mode mode to switch to
*/
static void IRAM_ATTR do_switch(pm_mode_t new_mode)
{
const int core_id = xPortGetCoreID();
do {
portENTER_CRITICAL_ISR(&s_switch_lock);
if (!s_is_switching) {
break;
}
if (s_new_mode <= new_mode) {
portEXIT_CRITICAL_ISR(&s_switch_lock);
return;
}
if (s_need_update_ccompare[core_id]) {
s_need_update_ccompare[core_id] = false;
}
portEXIT_CRITICAL_ISR(&s_switch_lock);
} while (true);
s_new_mode = new_mode;
s_is_switching = true;
bool config_changed = s_config_changed;
s_config_changed = false;
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portEXIT_CRITICAL_ISR(&s_switch_lock);
rtc_cpu_freq_config_t new_config = s_cpu_freq_by_mode[new_mode];
rtc_cpu_freq_config_t old_config;
if (!config_changed) {
old_config = s_cpu_freq_by_mode[s_mode];
} else {
rtc_clk_cpu_freq_get_config(&old_config);
}
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if (new_config.freq_mhz != old_config.freq_mhz) {
uint32_t old_ticks_per_us = old_config.freq_mhz;
uint32_t new_ticks_per_us = new_config.freq_mhz;
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bool switch_down = new_ticks_per_us < old_ticks_per_us;
ESP_PM_TRACE_ENTER(FREQ_SWITCH, core_id);
if (switch_down) {
on_freq_update(old_ticks_per_us, new_ticks_per_us);
}
rtc_clk_cpu_freq_set_config_fast(&new_config);
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if (!switch_down) {
on_freq_update(old_ticks_per_us, new_ticks_per_us);
}
ESP_PM_TRACE_EXIT(FREQ_SWITCH, core_id);
}
portENTER_CRITICAL_ISR(&s_switch_lock);
s_mode = new_mode;
s_is_switching = false;
portEXIT_CRITICAL_ISR(&s_switch_lock);
}
/**
* @brief Calculate new CCOMPARE value based on s_ccount_{mul,div}
*
* Adjusts CCOMPARE value so that the interrupt happens at the same time as it
* would happen without the frequency change.
* Assumes that the new_frequency = old_frequency * s_ccount_mul / s_ccount_div.
*/
static void IRAM_ATTR update_ccompare(void)
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{
uint32_t ccount = XTHAL_GET_CCOUNT();
uint32_t ccompare = XTHAL_GET_CCOMPARE(XT_TIMER_INDEX);
if ((ccompare - CCOMPARE_MIN_CYCLES_IN_FUTURE) - ccount < UINT32_MAX / 2) {
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uint32_t diff = ccompare - ccount;
uint32_t diff_scaled = (diff * s_ccount_mul + s_ccount_div - 1) / s_ccount_div;
if (diff_scaled < _xt_tick_divisor) {
uint32_t new_ccompare = ccount + diff_scaled;
XTHAL_SET_CCOMPARE(XT_TIMER_INDEX, new_ccompare);
}
}
}
static void IRAM_ATTR leave_idle(void)
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{
int core_id = xPortGetCoreID();
if (s_core_idle[core_id]) {
// TODO: possible optimization: raise frequency here first
esp_pm_lock_acquire(s_rtos_lock_handle[core_id]);
s_core_idle[core_id] = false;
}
}
void esp_pm_impl_idle_hook(void)
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{
int core_id = xPortGetCoreID();
uint32_t state = portENTER_CRITICAL_NESTED();
if (!s_core_idle[core_id]) {
esp_pm_lock_release(s_rtos_lock_handle[core_id]);
s_core_idle[core_id] = true;
}
portEXIT_CRITICAL_NESTED(state);
ESP_PM_TRACE_ENTER(IDLE, core_id);
}
void IRAM_ATTR esp_pm_impl_isr_hook(void)
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{
int core_id = xPortGetCoreID();
ESP_PM_TRACE_ENTER(ISR_HOOK, core_id);
/* Prevent higher level interrupts (than the one this function was called from)
* from happening in this section, since they will also call into esp_pm_impl_isr_hook.
*/
uint32_t state = portENTER_CRITICAL_NESTED();
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#if portNUM_PROCESSORS == 2
if (s_need_update_ccompare[core_id]) {
update_ccompare();
s_need_update_ccompare[core_id] = false;
} else {
leave_idle();
}
#else
leave_idle();
#endif // portNUM_PROCESSORS == 2
portEXIT_CRITICAL_NESTED(state);
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ESP_PM_TRACE_EXIT(ISR_HOOK, core_id);
}
void esp_pm_impl_waiti(void)
{
#if CONFIG_FREERTOS_USE_TICKLESS_IDLE
int core_id = xPortGetCoreID();
if (s_skipped_light_sleep[core_id]) {
asm("waiti 0");
/* Interrupt took the CPU out of waiti and s_rtos_lock_handle[core_id]
* is now taken. However since we are back to idle task, we can release
* the lock so that vApplicationSleep can attempt to enter light sleep.
*/
esp_pm_impl_idle_hook();
s_skipped_light_sleep[core_id] = false;
}
#else
asm("waiti 0");
#endif // CONFIG_FREERTOS_USE_TICKLESS_IDLE
}
#if CONFIG_FREERTOS_USE_TICKLESS_IDLE
static inline bool IRAM_ATTR should_skip_light_sleep(int core_id)
{
#if portNUM_PROCESSORS == 2
if (s_skip_light_sleep[core_id]) {
s_skip_light_sleep[core_id] = false;
s_skipped_light_sleep[core_id] = true;
return true;
}
#endif // portNUM_PROCESSORS == 2
if (s_mode != PM_MODE_LIGHT_SLEEP || s_is_switching) {
s_skipped_light_sleep[core_id] = true;
} else {
s_skipped_light_sleep[core_id] = false;
}
return s_skipped_light_sleep[core_id];
}
static inline void IRAM_ATTR other_core_should_skip_light_sleep(int core_id)
{
#if portNUM_PROCESSORS == 2
s_skip_light_sleep[!core_id] = true;
#endif
}
void IRAM_ATTR vApplicationSleep( TickType_t xExpectedIdleTime )
{
portENTER_CRITICAL(&s_switch_lock);
int core_id = xPortGetCoreID();
if (!should_skip_light_sleep(core_id)) {
/* Calculate how much we can sleep */
int64_t next_esp_timer_alarm = esp_timer_get_next_alarm();
int64_t now = esp_timer_get_time();
int64_t time_until_next_alarm = next_esp_timer_alarm - now;
int64_t wakeup_delay_us = portTICK_PERIOD_MS * 1000LL * xExpectedIdleTime;
int64_t sleep_time_us = MIN(wakeup_delay_us, time_until_next_alarm);
if (sleep_time_us >= configEXPECTED_IDLE_TIME_BEFORE_SLEEP * portTICK_PERIOD_MS * 1000LL) {
esp_sleep_enable_timer_wakeup(sleep_time_us - LIGHT_SLEEP_EARLY_WAKEUP_US);
#ifdef CONFIG_PM_TRACE
/* to force tracing GPIOs to keep state */
esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
#endif
/* Enter sleep */
ESP_PM_TRACE_ENTER(SLEEP, core_id);
int64_t sleep_start = esp_timer_get_time();
esp_light_sleep_start();
int64_t slept_us = esp_timer_get_time() - sleep_start;
ESP_PM_TRACE_EXIT(SLEEP, core_id);
uint32_t slept_ticks = slept_us / (portTICK_PERIOD_MS * 1000LL);
if (slept_ticks > 0) {
/* Adjust RTOS tick count based on the amount of time spent in sleep */
vTaskStepTick(slept_ticks);
/* Trigger tick interrupt, since sleep time was longer
* than portTICK_PERIOD_MS. Note that setting INTSET does not
* work for timer interrupt, and changing CCOMPARE would clear
* the interrupt flag.
*/
XTHAL_SET_CCOUNT(XTHAL_GET_CCOMPARE(XT_TIMER_INDEX) - 16);
while (!(XTHAL_GET_INTERRUPT() & BIT(XT_TIMER_INTNUM))) {
;
}
}
other_core_should_skip_light_sleep(core_id);
}
}
portEXIT_CRITICAL(&s_switch_lock);
}
#endif //CONFIG_FREERTOS_USE_TICKLESS_IDLE
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#ifdef WITH_PROFILING
void esp_pm_impl_dump_stats(FILE* out)
{
pm_time_t time_in_mode[PM_MODE_COUNT];
portENTER_CRITICAL_ISR(&s_switch_lock);
memcpy(time_in_mode, s_time_in_mode, sizeof(time_in_mode));
pm_time_t last_mode_change_time = s_last_mode_change_time;
pm_mode_t cur_mode = s_mode;
pm_time_t now = pm_get_time();
portEXIT_CRITICAL_ISR(&s_switch_lock);
time_in_mode[cur_mode] += now - last_mode_change_time;
fprintf(out, "Mode stats:\n");
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for (int i = 0; i < PM_MODE_COUNT; ++i) {
if (i == PM_MODE_LIGHT_SLEEP && !s_light_sleep_en) {
/* don't display light sleep mode if it's not enabled */
continue;
}
fprintf(out, "%8s %3dM %12lld %2d%%\n",
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s_mode_names[i],
s_cpu_freq_by_mode[i].freq_mhz,
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time_in_mode[i],
(int) (time_in_mode[i] * 100 / now));
}
}
#endif // WITH_PROFILING
void esp_pm_impl_init(void)
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{
#ifdef CONFIG_PM_TRACE
esp_pm_trace_init();
#endif
ESP_ERROR_CHECK(esp_pm_lock_create(ESP_PM_CPU_FREQ_MAX, 0, "rtos0",
&s_rtos_lock_handle[0]));
ESP_ERROR_CHECK(esp_pm_lock_acquire(s_rtos_lock_handle[0]));
#if portNUM_PROCESSORS == 2
ESP_ERROR_CHECK(esp_pm_lock_create(ESP_PM_CPU_FREQ_MAX, 0, "rtos1",
&s_rtos_lock_handle[1]));
ESP_ERROR_CHECK(esp_pm_lock_acquire(s_rtos_lock_handle[1]));
#endif // portNUM_PROCESSORS == 2
/* Configure all modes to use the default CPU frequency.
* This will be modified later by a call to esp_pm_configure.
*/
rtc_cpu_freq_config_t default_config;
if (!rtc_clk_cpu_freq_mhz_to_config(CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ, &default_config)) {
assert(false && "unsupported frequency");
}
for (size_t i = 0; i < PM_MODE_COUNT; ++i) {
s_cpu_freq_by_mode[i] = default_config;
}
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}