esp-idf/components/esp_hw_support/sleep_clock.c

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/*
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stddef.h>
#include <string.h>
#include <stdarg.h>
#include "sdkconfig.h"
#include "soc/soc_caps.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_attr.h"
#include "esp_check.h"
#include "esp_regdma.h"
#include "esp_private/startup_internal.h"
#include "esp_private/sleep_retention.h"
#include "esp_private/sleep_clock.h"
#include "soc/pcr_reg.h"
#include "modem/modem_syscon_reg.h"
#if SOC_PM_RETENTION_SW_TRIGGER_REGDMA
#include "modem/modem_lpcon_reg.h"
#endif
static __attribute__((unused)) const char *TAG = "sleep_clock";
static esp_err_t sleep_clock_system_retention_init(void *arg)
{
#if CONFIG_IDF_TARGET_ESP32C6
#define N_REGS_PCR() (((PCR_SRAM_POWER_CONF_REG - DR_REG_PCR_BASE) / 4) + 1)
#elif CONFIG_IDF_TARGET_ESP32H2
#define N_REGS_PCR() (((PCR_PWDET_SAR_CLK_CONF_REG - DR_REG_PCR_BASE) / 4) + 1)
#endif
const static sleep_retention_entries_config_t pcr_regs_retention[] = {
[0] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_PCR_LINK(0), DR_REG_PCR_BASE, DR_REG_PCR_BASE, N_REGS_PCR(), 0, 0), .owner = ENTRY(0) | ENTRY(2) } /* pcr */
};
esp_err_t err = sleep_retention_entries_create(pcr_regs_retention, ARRAY_SIZE(pcr_regs_retention), REGDMA_LINK_PRI_0, SLEEP_RETENTION_MODULE_CLOCK_SYSTEM);
ESP_RETURN_ON_ERROR(err, TAG, "failed to allocate memory for system (PCR) retention");
ESP_LOGI(TAG, "System Power, Clock and Reset sleep retention initialization");
return ESP_OK;
}
#if CONFIG_MAC_BB_PD || CONFIG_BT_LE_SLEEP_ENABLE || CONFIG_IEEE802154_SLEEP_ENABLE
static esp_err_t sleep_clock_modem_retention_init(void *arg)
{
#define N_REGS_SYSCON() (((MODEM_SYSCON_MEM_CONF_REG - MODEM_SYSCON_TEST_CONF_REG) / 4) + 1)
#if SOC_PM_RETENTION_SW_TRIGGER_REGDMA
#define N_REGS_LPCON() (((MODEM_LPCON_MEM_CONF_REG - MODEM_LPCON_TEST_CONF_REG) / 4) + 1)
#endif
const static sleep_retention_entries_config_t modem_regs_retention[] = {
[0] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEMSYSCON_LINK(0), MODEM_SYSCON_TEST_CONF_REG, MODEM_SYSCON_TEST_CONF_REG, N_REGS_SYSCON(), 0, 0), .owner = ENTRY(0) | ENTRY(1) }, /* MODEM SYSCON */
#if SOC_PM_RETENTION_SW_TRIGGER_REGDMA
[1] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEMLPCON_LINK(0), MODEM_LPCON_TEST_CONF_REG, MODEM_LPCON_TEST_CONF_REG, N_REGS_LPCON(), 0, 0), .owner = ENTRY(0) | ENTRY(1) } /* MODEM LPCON */
#endif
};
esp_err_t err = sleep_retention_entries_create(modem_regs_retention, ARRAY_SIZE(modem_regs_retention), REGDMA_LINK_PRI_1, SLEEP_RETENTION_MODULE_CLOCK_MODEM);
auto beacon: support esp32c6 autobeacon (advanced DTIM sleep feature) modem retention: Support esp32c6 wifi MAC and baseband sleep retention sleep_modem: wifi MAC modem wakeup protect in modem state before PMU trigger sleep enable request sleep modem: provide a interface to get whether the Modem power domain is allowed to power off during sleep add i2c_ana master header file to project auto beacon: release PMU's lock on root clock source (it is locked in the PLL) wifi receiving beacon frame in PMU modem state strongly depends on the BBPLL clock, PMU will forcibly lock the root clock source as PLL, when the root clock source of the software system is selected as PLL, we need to release the root clock source locking. When it is judged that the PLL is locked by PMU after wakeing up from the PMU modem state, switch the root clock source to the PLL in the sleep process (a critical section). auto beacon: fix the failure to receive broadcast/multicast frames in modem state When the multicast field in the beacon frame received in the PMU modem state is True, the PMU switches to the PMU active state (the PMU waits for the HP LDO to stabilize and then restores the MAC context) and starts to receive broadcast/multicast frames (Broadcast/Multicast frames will be sent after a minimum delay of 48 us after the beacon frame), because the PMU waits for the HP LDO to stabilize too long (~154 us), which will cause broadcast/multicast frame reception to be missed. auto beacon: select the PLL clock source as the REGDMA backup clock source when the PMU switches to ACTIVE from MODEM state update Digital Peripheral (M2A switch) REGDMA restore time parameter auto beacon: fix the issue that only channel 1 can connect to AP in modem state
2022-03-13 23:33:01 -04:00
ESP_RETURN_ON_ERROR(err, TAG, "failed to allocate memory for modem (SYSCON) retention, 2 level priority");
ESP_LOGI(TAG, "Modem Power, Clock and Reset sleep retention initialization");
return ESP_OK;
}
#endif
bool IRAM_ATTR clock_domain_pd_allowed(void)
{
const uint32_t inited_modules = sleep_retention_get_inited_modules();
const uint32_t created_modules = sleep_retention_get_created_modules();
const uint32_t sys_clk_dep_modules = (const uint32_t) (BIT(SLEEP_RETENTION_MODULE_SYS_PERIPH));
/* The clock and reset of MODEM (WiFi, BLE and 15.4) modules are managed
* through MODEM_SYSCON, when one or more MODEMs are initialized, it is
* necessary to check the state of CLOCK_MODEM to determine MODEM domain on
* or off. The clock and reset of digital peripherals are managed through
* PCR, with TOP domain similar to MODEM domain. */
uint32_t modem_clk_dep_modules = 0;
#if SOC_WIFI_SUPPORTED
modem_clk_dep_modules |= BIT(SLEEP_RETENTION_MODULE_WIFI_MAC) | BIT(SLEEP_RETENTION_MODULE_WIFI_BB);
#endif
#if SOC_BT_SUPPORTED
modem_clk_dep_modules |= BIT(SLEEP_RETENTION_MODULE_BLE_MAC) | BIT(SLEEP_RETENTION_MODULE_BT_BB);
#endif
#if SOC_IEEE802154_SUPPORTED
modem_clk_dep_modules |= BIT(SLEEP_RETENTION_MODULE_802154_MAC) | BIT(SLEEP_RETENTION_MODULE_BT_BB);
#endif
uint32_t mask = 0;
if (inited_modules & sys_clk_dep_modules) {
mask |= BIT(SLEEP_RETENTION_MODULE_CLOCK_SYSTEM);
}
if (inited_modules & modem_clk_dep_modules) {
#if SOC_WIFI_SUPPORTED || SOC_BT_SUPPORTED || SOC_IEEE802154_SUPPORTED
mask |= BIT(SLEEP_RETENTION_MODULE_CLOCK_MODEM);
#endif
}
return ((inited_modules & mask) == (created_modules & mask));
}
ESP_SYSTEM_INIT_FN(sleep_clock_startup_init, BIT(0), 106)
{
sleep_retention_module_init_param_t init_param = {
.cbs = { .create = { .handle = sleep_clock_system_retention_init, .arg = NULL } },
.attribute = SLEEP_RETENTION_MODULE_ATTR_PASSIVE
};
sleep_retention_module_init(SLEEP_RETENTION_MODULE_CLOCK_SYSTEM, &init_param);
auto beacon: support esp32c6 autobeacon (advanced DTIM sleep feature) modem retention: Support esp32c6 wifi MAC and baseband sleep retention sleep_modem: wifi MAC modem wakeup protect in modem state before PMU trigger sleep enable request sleep modem: provide a interface to get whether the Modem power domain is allowed to power off during sleep add i2c_ana master header file to project auto beacon: release PMU's lock on root clock source (it is locked in the PLL) wifi receiving beacon frame in PMU modem state strongly depends on the BBPLL clock, PMU will forcibly lock the root clock source as PLL, when the root clock source of the software system is selected as PLL, we need to release the root clock source locking. When it is judged that the PLL is locked by PMU after wakeing up from the PMU modem state, switch the root clock source to the PLL in the sleep process (a critical section). auto beacon: fix the failure to receive broadcast/multicast frames in modem state When the multicast field in the beacon frame received in the PMU modem state is True, the PMU switches to the PMU active state (the PMU waits for the HP LDO to stabilize and then restores the MAC context) and starts to receive broadcast/multicast frames (Broadcast/Multicast frames will be sent after a minimum delay of 48 us after the beacon frame), because the PMU waits for the HP LDO to stabilize too long (~154 us), which will cause broadcast/multicast frame reception to be missed. auto beacon: select the PLL clock source as the REGDMA backup clock source when the PMU switches to ACTIVE from MODEM state update Digital Peripheral (M2A switch) REGDMA restore time parameter auto beacon: fix the issue that only channel 1 can connect to AP in modem state
2022-03-13 23:33:01 -04:00
2023-05-25 06:18:03 -04:00
#if CONFIG_MAC_BB_PD || CONFIG_BT_LE_SLEEP_ENABLE || CONFIG_IEEE802154_SLEEP_ENABLE
init_param = (sleep_retention_module_init_param_t) {
.cbs = { .create = { .handle = sleep_clock_modem_retention_init, .arg = NULL } },
.attribute = SLEEP_RETENTION_MODULE_ATTR_PASSIVE
};
sleep_retention_module_init(SLEEP_RETENTION_MODULE_CLOCK_MODEM, &init_param);
#endif
return ESP_OK;
}