Merge branch 'bugfix/esp32c6_deep_sleep_minor_fixes' into 'master'

bugfix: esp32c6 deep sleep minor fixes

Closes WIFI-5559, WIFI-5425, WIFI-3494, WIFI-3495, WIFI-4163, and WIFI-4164

See merge request espressif/esp-idf!22697

components/esp_hw_support/include/esp_sleep.h

@@ -18,6 +18,11 @@
 extern "C" {
 #endif
 
+/*
+ Definitions for the deepsleep prepare callbacks
+*/
+typedef void (*esp_deep_sleep_cb_t)(void);
+
 /**
  * @brief Logic function used for EXT1 wakeup mode.
  */
@@ -453,6 +458,27 @@ esp_err_t esp_light_sleep_start(void);
 void esp_deep_sleep(uint64_t time_in_us) __attribute__((noreturn));
 
 
+/**
+  * @brief Register a callback to be called from the deep sleep prepare
+  *
+  * @warning deepsleep callbacks should without parameters, and MUST NOT,
+  *          UNDER ANY CIRCUMSTANCES, CALL A FUNCTION THAT MIGHT BLOCK.
+  *
+  * @param new_dslp_cb     Callback to be called
+  *
+  * @return
+  *     - ESP_OK:         Callback registered to the deepsleep misc_modules_sleep_prepare
+  *     - ESP_ERR_NO_MEM: No more hook space for register the callback
+  */
+esp_err_t esp_deep_sleep_register_hook(esp_deep_sleep_cb_t new_dslp_cb);
+
+/**
+  * @brief Unregister an deepsleep callback
+  *
+  * @param old_dslp_cb     Callback to be unregistered
+  */
+void esp_deep_sleep_deregister_hook(esp_deep_sleep_cb_t old_dslp_cb);
+
 /**
  * @brief Get the wakeup source which caused wakeup from sleep
  *

components/esp_hw_support/modem_clock.c

@@ -64,7 +64,7 @@ static void IRAM_ATTR modem_clock_wifi_bb_configure(modem_clock_context_t *ctx,
 static void IRAM_ATTR modem_clock_ble_mac_configure(modem_clock_context_t *ctx, bool enable)
 {
     modem_syscon_ll_enable_etm_clock(ctx->hal->syscon_dev, enable);
-    modem_syscom_ll_enable_modem_sec_clock(ctx->hal->syscon_dev, enable);
+    modem_syscon_ll_enable_modem_sec_clock(ctx->hal->syscon_dev, enable);
     modem_syscon_ll_enable_ble_timer_clock(ctx->hal->syscon_dev, enable);
 }
 
@@ -98,7 +98,6 @@ static void IRAM_ATTR modem_clock_fe_configure(modem_clock_context_t *ctx, bool
 static void IRAM_ATTR modem_clock_i2c_master_configure(modem_clock_context_t *ctx, bool enable)
 {
     modem_lpcon_ll_enable_i2c_master_clock(ctx->hal->lpcon_dev, enable);
-    modem_lpcon_ll_enable_i2c_master_160m_clock(ctx->hal->lpcon_dev, enable);
 }
 
 static void IRAM_ATTR modem_clock_etm_configure(modem_clock_context_t *ctx, bool enable)

components/esp_hw_support/port/esp32c6/pmu_sleep.c

@@ -20,23 +20,32 @@
 #define HP(state)   (PMU_MODE_HP_ ## state)
 #define LP(state)   (PMU_MODE_LP_ ## state)
 
+
+static bool s_pmu_sleep_regdma_backup_enabled;
+
 void pmu_sleep_enable_regdma_backup(void)
 {
-    assert(PMU_instance()->hal);
-    /* entry 0, 1, 2 is used by pmu HP_SLEEP and HP_ACTIVE, HP_SLEEP
-     * and HP_MODEM or HP_MODEM and HP_ACTIVE states switching,
-     * respectively. entry 3 is reserved, not used yet! */
-    pmu_hal_hp_set_sleep_active_backup_enable(PMU_instance()->hal);
-    pmu_hal_hp_set_sleep_modem_backup_enable(PMU_instance()->hal);
-    pmu_hal_hp_set_modem_active_backup_enable(PMU_instance()->hal);
+    if(!s_pmu_sleep_regdma_backup_enabled){
+        assert(PMU_instance()->hal);
+        /* entry 0, 1, 2 is used by pmu HP_SLEEP and HP_ACTIVE, HP_SLEEP
+         * and HP_MODEM or HP_MODEM and HP_ACTIVE states switching,
+         * respectively. entry 3 is reserved, not used yet! */
+        pmu_hal_hp_set_sleep_active_backup_enable(PMU_instance()->hal);
+        pmu_hal_hp_set_sleep_modem_backup_enable(PMU_instance()->hal);
+        pmu_hal_hp_set_modem_active_backup_enable(PMU_instance()->hal);
+        s_pmu_sleep_regdma_backup_enabled = true;
+    }
 }
 
 void pmu_sleep_disable_regdma_backup(void)
 {
-    assert(PMU_instance()->hal);
-    pmu_hal_hp_set_sleep_active_backup_disable(PMU_instance()->hal);
-    pmu_hal_hp_set_sleep_modem_backup_disable(PMU_instance()->hal);
-    pmu_hal_hp_set_modem_active_backup_disable(PMU_instance()->hal);
+    if(s_pmu_sleep_regdma_backup_enabled){
+        assert(PMU_instance()->hal);
+        pmu_hal_hp_set_sleep_active_backup_disable(PMU_instance()->hal);
+        pmu_hal_hp_set_sleep_modem_backup_disable(PMU_instance()->hal);
+        pmu_hal_hp_set_modem_active_backup_disable(PMU_instance()->hal);
+        s_pmu_sleep_regdma_backup_enabled = false;
+    }
 }
 
 uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t pd_flags, uint32_t slowclk_period, uint32_t fastclk_period)

components/esp_hw_support/sleep_modem.c

@@ -203,15 +203,14 @@ static __attribute__((unused)) esp_err_t sleep_modem_wifi_modem_state_init(void)
         [22] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x14), I2C_ANA_MST_ANA_CONF0_REG,        0x4,                       0xc,        0, 1), /* BBPLL calibration disable */
 
         [23] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x15), MODEM_LPCON_CLK_CONF_REG,         0,                         MODEM_LPCON_CLK_I2C_MST_EN_M,       0, 1), /* I2C MST disable */
-        [24] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x16), MODEM_LPCON_I2C_MST_CLK_CONF_REG, 0,                         MODEM_LPCON_CLK_I2C_MST_SEL_160M_M, 0, 1), /* I2C MST sel 160m disable */
 
         /* PMU to trigger disable RXBLOCK */
-        [25] = REGDMA_LINK_WAIT_INIT (REGDMA_PHY_LINK(0x17), WDEVTXQ_BLOCK,                    0,                         0x6000,     0, 1),
-        [26] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x18), WDEVTXQ_BLOCK,                    WDEV_RXBLOCK,              0x1000,     0, 1),
-        [27] = REGDMA_LINK_WAIT_INIT (REGDMA_PHY_LINK(0x19), WDEVTXQ_BLOCK,                    0,                         0x6000,     0, 1),
+        [24] = REGDMA_LINK_WAIT_INIT (REGDMA_PHY_LINK(0x17), WDEVTXQ_BLOCK,                    0,                         0x6000,     0, 1),
+        [25] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x18), WDEVTXQ_BLOCK,                    WDEV_RXBLOCK,              0x1000,     0, 1),
+        [26] = REGDMA_LINK_WAIT_INIT (REGDMA_PHY_LINK(0x19), WDEVTXQ_BLOCK,                    0,                         0x6000,     0, 1),
 
-        [28] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x1a), PMU_SLP_WAKEUP_CNTL7_REG,         0x200000,                  0xffff0000, 1, 0),
-        [29] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x1b), PMU_SLP_WAKEUP_CNTL7_REG,         0x9730000,                 0xffff0000, 0, 1)
+        [27] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x1a), PMU_SLP_WAKEUP_CNTL7_REG,         0x200000,                  0xffff0000, 1, 0),
+        [28] = REGDMA_LINK_WRITE_INIT(REGDMA_PHY_LINK(0x1b), PMU_SLP_WAKEUP_CNTL7_REG,         0x9730000,                 0xffff0000, 0, 1)
     };
     wifi_modem_config[7].write_wait.value  = I2C_BURST_VAL(cmd.config[1].host_id, cmd.config[1].start, cmd.config[1].end);
     wifi_modem_config[18].write_wait.value = I2C_BURST_VAL(cmd.config[0].host_id, cmd.config[0].start, cmd.config[0].end);

components/esp_hw_support/sleep_modes.c

@@ -150,6 +150,10 @@
 #define CHECK_SOURCE(source, value, mask) ((s_config.wakeup_triggers & mask) && \
                                             (source == value))
 
+#define MAX_DSLP_HOOKS      3
+
+static esp_deep_sleep_cb_t s_dslp_cb[MAX_DSLP_HOOKS]={0};
+
 /**
  * Internal structure which holds all requested deep sleep parameters
  */
@@ -343,6 +347,32 @@ void esp_deep_sleep(uint64_t time_in_us)
     esp_deep_sleep_start();
 }
 
+esp_err_t esp_deep_sleep_register_hook(esp_deep_sleep_cb_t new_dslp_cb)
+{
+    portENTER_CRITICAL(&spinlock_rtc_deep_sleep);
+    for(int n = 0; n < MAX_DSLP_HOOKS; n++){
+        if (s_dslp_cb[n]==NULL || s_dslp_cb[n]==new_dslp_cb) {
+            s_dslp_cb[n]=new_dslp_cb;
+            portEXIT_CRITICAL(&spinlock_rtc_deep_sleep);
+            return ESP_OK;
+        }
+    }
+    portEXIT_CRITICAL(&spinlock_rtc_deep_sleep);
+    ESP_LOGE(TAG, "Registered deepsleep callbacks exceeds MAX_DSLP_HOOKS");
+    return ESP_ERR_NO_MEM;
+}
+
+void esp_deep_sleep_deregister_hook(esp_deep_sleep_cb_t old_dslp_cb)
+{
+    portENTER_CRITICAL(&spinlock_rtc_deep_sleep);
+    for(int n = 0; n < MAX_DSLP_HOOKS; n++){
+        if(s_dslp_cb[n] == old_dslp_cb) {
+            s_dslp_cb[n] = NULL;
+        }
+    }
+    portEXIT_CRITICAL(&spinlock_rtc_deep_sleep);
+}
+
 // [refactor-todo] provide target logic for body of uart functions below
 static void IRAM_ATTR flush_uarts(void)
 {
@@ -392,21 +422,29 @@ static void IRAM_ATTR resume_uarts(void)
 /**
  * These save-restore workaround should be moved to lower layer
  */
-inline static void IRAM_ATTR misc_modules_sleep_prepare(void)
+inline static void IRAM_ATTR misc_modules_sleep_prepare(bool deep_sleep)
 {
+    if (deep_sleep){
+        for (int n = 0; n < MAX_DSLP_HOOKS; n++) {
+            if (s_dslp_cb[n] != NULL) {
+                s_dslp_cb[n]();
+            }
+        }
+    } else {
 #if CONFIG_MAC_BB_PD
-    mac_bb_power_down_cb_execute();
+        mac_bb_power_down_cb_execute();
 #endif
 #if CONFIG_GPIO_ESP32_SUPPORT_SWITCH_SLP_PULL
-    gpio_sleep_mode_config_apply();
+        gpio_sleep_mode_config_apply();
 #endif
 #if SOC_PM_SUPPORT_CPU_PD && SOC_PM_CPU_RETENTION_BY_RTCCNTL
-    sleep_enable_cpu_retention();
+        sleep_enable_cpu_retention();
 #endif
 #if REGI2C_ANA_CALI_PD_WORKAROUND
-    regi2c_analog_cali_reg_read();
+        regi2c_analog_cali_reg_read();
 #endif
-    sar_periph_ctrl_power_disable();
+        sar_periph_ctrl_power_disable();
+    }
 }
 
 /**
@@ -511,9 +549,7 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags, esp_sleep_mode_t mo
 #endif
 #endif //!CONFIG_IDF_TARGET_ESP32C6
 
-    if (!deep_sleep) {
-        misc_modules_sleep_prepare();
-    }
+    misc_modules_sleep_prepare(deep_sleep);
 
 #if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
     if (deep_sleep) {
@@ -723,8 +759,7 @@ void IRAM_ATTR esp_deep_sleep_start(void)
 
 #if SOC_PMU_SUPPORTED
     uint32_t force_pd_flags = PMU_SLEEP_PD_TOP | PMU_SLEEP_PD_VDDSDIO | PMU_SLEEP_PD_MODEM | PMU_SLEEP_PD_HP_PERIPH \
-                            | PMU_SLEEP_PD_CPU | PMU_SLEEP_PD_MEM | PMU_SLEEP_PD_XTAL | PMU_SLEEP_PD_RC_FAST \
-                            | PMU_SLEEP_PD_XTAL32K |PMU_SLEEP_PD_RC32K;
+                            | PMU_SLEEP_PD_CPU | PMU_SLEEP_PD_MEM | PMU_SLEEP_PD_XTAL;
 #else
     uint32_t force_pd_flags = RTC_SLEEP_PD_DIG | RTC_SLEEP_PD_VDDSDIO | RTC_SLEEP_PD_INT_8M | RTC_SLEEP_PD_XTAL;
 #endif

components/esp_hw_support/sleep_retention.c

@@ -9,9 +9,11 @@
 #include <sys/lock.h>
 #include <sys/param.h>
 
+#include "esp_err.h"
 #include "esp_attr.h"
 #include "esp_log.h"
 #include "esp_heap_caps.h"
+#include "esp_sleep.h"
 #include "soc/soc_caps.h"
 #include "esp_private/esp_regdma.h"
 #include "esp_private/esp_pau.h"
@@ -433,6 +435,7 @@ esp_err_t sleep_retention_entries_create(const sleep_retention_entries_config_t
     err = sleep_retention_entries_create_wrapper(retent, num, priority, module);
     if (err)  goto error;
     pmu_sleep_enable_regdma_backup();
+    ESP_ERROR_CHECK(esp_deep_sleep_register_hook(&pmu_sleep_disable_regdma_backup));
 
 error:
     return err;

components/hal/esp32c6/include/hal/modem_syscon_ll.h

@@ -49,7 +49,7 @@ static inline void modem_syscon_ll_enable_ieee802154_mac_clock(modem_syscon_dev_
 }
 
 __attribute__((always_inline))
-static inline void modem_syscom_ll_enable_modem_sec_clock(modem_syscon_dev_t *hw, bool en)
+static inline void modem_syscon_ll_enable_modem_sec_clock(modem_syscon_dev_t *hw, bool en)
 {
     hw->clk_conf.clk_modem_sec_en = en;
     hw->clk_conf.clk_modem_sec_ecb_en = en;

components/soc/esp32c6/include/soc/Kconfig.soc_caps.in

@@ -1103,6 +1103,10 @@ config SOC_PM_SUPPORT_MAC_BB_PD
     bool
     default y
 
+config SOC_PM_SUPPORT_RTC_PERIPH_PD
+    bool
+    default y
+
 config SOC_PM_SUPPORT_PMU_MODEM_STATE
     bool
     default y

components/soc/esp32c6/include/soc/soc_caps.h

@@ -454,6 +454,7 @@
 #define SOC_PM_SUPPORT_VDDSDIO_PD       (1)
 #define SOC_PM_SUPPORT_TOP_PD           (1)
 #define SOC_PM_SUPPORT_MAC_BB_PD        (1)
+#define SOC_PM_SUPPORT_RTC_PERIPH_PD    (1)
 
 #define SOC_PM_SUPPORT_PMU_MODEM_STATE  (1)
 /* macro redefine for pass esp_wifi headers md5sum check */