Merge branch 'bugfix/fix_wifi_fail_to_enter_lightsleep_when_disconnected_esp32c6' into 'master'

fix(sleep_modem): fix lightsleep failure if enable lightsleep at phy disabled

Closes WIFI-5725 and WIFI-6208

See merge request espressif/esp-idf!25902

components/esp_hw_support/include/esp_private/sleep_modem.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -161,6 +161,35 @@ void esp_pm_register_light_sleep_default_params_config_callback(update_light_sle
  */
 void esp_pm_unregister_light_sleep_default_params_config_callback(void);
 
+#if SOC_PM_SUPPORT_PMU_MODEM_STATE
+/**
+ * @brief Init Wi-Fi modem state.
+ *
+ * This function init wifi modem state.
+  * @return
+  *   - ESP_OK on success
+  *   - ESP_ERR_NO_MEM if no memory for link
+ */
+esp_err_t sleep_modem_wifi_modem_state_init(void);
+
+/**
+ * @brief  Deinit Wi-Fi modem state.
+ *
+ * This function deinit wifi modem state.
+ */
+void sleep_modem_wifi_modem_state_deinit(void);
+
+/**
+ * @brief Function to check Wi-Fi modem state to skip light sleep.
+ *
+ * This function is to check if light sleep should skip by Wi-Fi modem state .
+  * @return
+  *   - true skip light sleep
+  *   - false not skip light sleep
+ */
+bool sleep_modem_wifi_modem_state_skip_light_sleep(void);
+#endif
+
 #ifdef __cplusplus
 }
 #endif

components/esp_hw_support/sleep_modem.c

@@ -167,7 +167,7 @@ typedef struct sleep_modem_config {
 
 static sleep_modem_config_t s_sleep_modem = { .wifi.phy_link = NULL, .wifi.flags = 0 };
 
-static __attribute__((unused)) esp_err_t sleep_modem_wifi_modem_state_init(void)
+esp_err_t sleep_modem_wifi_modem_state_init(void)
 {
     esp_err_t err = ESP_OK;
     phy_i2c_master_command_attribute_t cmd;
@@ -244,7 +244,7 @@ static __attribute__((unused)) esp_err_t sleep_modem_wifi_modem_state_init(void)
     return err;
 }
 
-static __attribute__((unused)) void sleep_modem_wifi_modem_state_deinit(void)
+__attribute__((unused)) void sleep_modem_wifi_modem_state_deinit(void)
 {
     if (s_sleep_modem.wifi.phy_link) {
         regdma_link_destroy(s_sleep_modem.wifi.phy_link, 0);
@@ -302,7 +302,7 @@ uint32_t IRAM_ATTR sleep_modem_reject_triggers(void)
     return reject_triggers;
 }
 
-static __attribute__((unused)) bool IRAM_ATTR sleep_modem_wifi_modem_state_skip_light_sleep(void)
+bool IRAM_ATTR sleep_modem_wifi_modem_state_skip_light_sleep(void)
 {
     bool skip = false;
 #if SOC_PM_SUPPORT_PMU_MODEM_STATE
@@ -317,17 +317,8 @@ static __attribute__((unused)) bool IRAM_ATTR sleep_modem_wifi_modem_state_skip_
 esp_err_t sleep_modem_configure(int max_freq_mhz, int min_freq_mhz, bool light_sleep_enable)
 {
 #if CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
-    extern int esp_wifi_internal_mac_sleep_configure(bool, bool);
+    extern int esp_wifi_internal_light_sleep_configure(bool);
-    if (light_sleep_enable) {
+    esp_wifi_internal_light_sleep_configure(light_sleep_enable);
-        if (sleep_modem_wifi_modem_state_init() == ESP_OK) {
-            esp_pm_register_skip_light_sleep_callback(sleep_modem_wifi_modem_state_skip_light_sleep);
-            esp_wifi_internal_mac_sleep_configure(light_sleep_enable, true); /* require WiFi to enable automatically receives the beacon */
-        }
-    } else {
-        esp_wifi_internal_mac_sleep_configure(light_sleep_enable, false); /* require WiFi to disable automatically receives the beacon */
-        esp_pm_unregister_skip_light_sleep_callback(sleep_modem_wifi_modem_state_skip_light_sleep);
-        sleep_modem_wifi_modem_state_deinit();
-    }
 #endif
 #if CONFIG_PM_SLP_DEFAULT_PARAMS_OPT
     if (light_sleep_enable) {

components/esp_phy/src/phy_init.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -85,8 +85,10 @@ static bool s_is_phy_calibrated = false;
 static bool s_is_phy_reg_stored = false;
 /* Memory to store PHY digital registers */
 static uint32_t* s_phy_digital_regs_mem = NULL;
-static uint8_t s_phy_modem_init_ref = 0;
 #endif // SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
+#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA || CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+static uint8_t s_phy_modem_init_ref = 0;
+#endif
 
 
 #if CONFIG_ESP_PHY_MULTIPLE_INIT_DATA_BIN
@@ -349,23 +351,29 @@ void esp_wifi_bt_power_domain_off(void)
 
 void esp_phy_modem_init(void)
 {
-#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
+#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA || CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
     _lock_acquire(&s_phy_access_lock);
     s_phy_modem_init_ref++;
+#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
     if (s_phy_digital_regs_mem == NULL) {
         s_phy_digital_regs_mem = (uint32_t *)heap_caps_malloc(SOC_PHY_DIG_REGS_MEM_SIZE, MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
     }
-    _lock_release(&s_phy_access_lock);
 #endif // SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
+#if CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    sleep_modem_wifi_modem_state_init();
+#endif // CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    _lock_release(&s_phy_access_lock);
+#endif // SOC_PM_MODEM_RETENTION_BY_BACKUPDMA || CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
 }
 
 void esp_phy_modem_deinit(void)
 {
-#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
+#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA || CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
     _lock_acquire(&s_phy_access_lock);
 
     s_phy_modem_init_ref--;
     if (s_phy_modem_init_ref == 0) {
+#if SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
         s_is_phy_reg_stored = false;
         free(s_phy_digital_regs_mem);
         s_phy_digital_regs_mem = NULL;
@@ -374,11 +382,14 @@ void esp_phy_modem_deinit(void)
         */
 #if CONFIG_IDF_TARGET_ESP32C3
         phy_init_flag();
-#endif
+#endif // CONFIG_IDF_TARGET_ESP32C3
-    }
-
-    _lock_release(&s_phy_access_lock);
 #endif // SOC_PM_MODEM_RETENTION_BY_BACKUPDMA
+#if CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+        sleep_modem_wifi_modem_state_deinit();
+#endif // CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    }
+    _lock_release(&s_phy_access_lock);
+#endif // SOC_PM_MODEM_RETENTION_BY_BACKUPDMA || CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
 }
 
 #if CONFIG_MAC_BB_PD

components/esp_pm/pm_impl.c

@@ -123,6 +123,8 @@ static bool s_skipped_light_sleep[portNUM_PROCESSORS];
  */
 static bool s_skip_light_sleep[portNUM_PROCESSORS];
 #endif // portNUM_PROCESSORS == 2
+
+static _lock_t s_skip_light_sleep_lock;
 #endif // CONFIG_FREERTOS_USE_TICKLESS_IDLE
 
 /* A flag indicating that Idle hook has run on a given CPU;
@@ -547,25 +549,32 @@ static void IRAM_ATTR leave_idle(void)
 
 esp_err_t esp_pm_register_skip_light_sleep_callback(skip_light_sleep_cb_t cb)
 {
+    _lock_acquire(&s_skip_light_sleep_lock);
     for (int i = 0; i < PERIPH_SKIP_LIGHT_SLEEP_NO; i++) {
         if (s_periph_skip_light_sleep_cb[i] == cb) {
+            _lock_release(&s_skip_light_sleep_lock);
             return ESP_OK;
         } else if (s_periph_skip_light_sleep_cb[i] == NULL) {
             s_periph_skip_light_sleep_cb[i] = cb;
+            _lock_release(&s_skip_light_sleep_lock);
             return ESP_OK;
         }
     }
+    _lock_release(&s_skip_light_sleep_lock);
     return ESP_ERR_NO_MEM;
 }
 
 esp_err_t esp_pm_unregister_skip_light_sleep_callback(skip_light_sleep_cb_t cb)
 {
+    _lock_acquire(&s_skip_light_sleep_lock);
     for (int i = 0; i < PERIPH_SKIP_LIGHT_SLEEP_NO; i++) {
         if (s_periph_skip_light_sleep_cb[i] == cb) {
             s_periph_skip_light_sleep_cb[i] = NULL;
+            _lock_release(&s_skip_light_sleep_lock);
             return ESP_OK;
         }
     }
+    _lock_release(&s_skip_light_sleep_lock);
     return ESP_ERR_INVALID_STATE;
 }
 

components/esp_wifi/include/esp_private/wifi.h

@@ -629,15 +629,23 @@ void esp_wifi_set_keep_alive_time(uint32_t keep_alive_time);
 void esp_wifi_beacon_monitor_configure(wifi_beacon_monitor_config_t *config);
 
 /**
- * @brief   Require WiFi to enable or disable Advanced DTIM sleep function
+ * @brief   Set modem state mode to require WiFi to enable or disable Advanced DTIM sleep function
  *
- * @param   light_sleep_enable: true for light sleep mode is enabled, false for light sleep mode is disabled.
+ * @param   require_modem_state: true for require WiFi to enable Advanced DTIM sleep function,
- * @param   modem_state_enable: true for require WiFi to enable Advanced DTIM sleep function,
  *                              false for require WiFi to disable Advanced DTIM sleep function.
  * @return
  *    - ESP_OK: succeed
  */
-void esp_wifi_internal_mac_sleep_configure(bool light_sleep_enable, bool modem_state_enable);
+void esp_wifi_internal_modem_state_configure(bool require_modem_state);
+
+/**
+ * @brief   Set light sleep mode to require WiFi to enable or disable Advanced DTIM sleep function
+ *
+ * @param   light_sleep_enable: true for light sleep mode is enabled, false for light sleep mode is disabled.
+ * @return
+ *    - ESP_OK: succeed
+ */
+void esp_wifi_internal_light_sleep_configure(bool light_sleep_enable);
 
 /**
   * @brief      Start Publishing a service in the NAN cluster

components/esp_wifi/include/esp_wifi.h

@@ -1271,6 +1271,32 @@ esp_err_t esp_wifi_config_11b_rate(wifi_interface_t ifx, bool disable);
   */
 esp_err_t esp_wifi_connectionless_module_set_wake_interval(uint16_t wake_interval);
 
+/**
+  * @brief      Request extra reference of Wi-Fi radio.
+  *             Wi-Fi keep active state(RF opened) to be able to receive packets.
+  *
+  * @attention  Please pair the use of `esp_wifi_force_wakeup_acquire` with `esp_wifi_force_wakeup_release`.
+  *
+  * @return
+  *    - ESP_OK: succeed
+  *    - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
+  *    - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
+  */
+esp_err_t esp_wifi_force_wakeup_acquire(void);
+
+/**
+  * @brief      Release extra reference of Wi-Fi radio.
+  *             Wi-Fi go to sleep state(RF closed) if no more use of radio.
+  *
+  * @attention  Please pair the use of `esp_wifi_force_wakeup_acquire` with `esp_wifi_force_wakeup_release`.
+  *
+  * @return
+  *    - ESP_OK: succeed
+  *    - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
+  *    - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
+  */
+esp_err_t esp_wifi_force_wakeup_release(void);
+
 /**
   * @brief     configure country
   *

components/esp_wifi/lib

@@ -1 +1 @@
-Subproject commit b74ee0160632978f0e36763f55be0ea6ee18f0c8
+Subproject commit d5352da6c4f6e5d460a8f5af957b4e47420e7782

components/esp_wifi/src/wifi_init.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -167,6 +167,10 @@ esp_err_t esp_wifi_deinit(void)
 #if CONFIG_MAC_BB_PD
     esp_wifi_internal_set_mac_sleep(false);
     esp_mac_bb_pd_mem_deinit();
+#endif
+#if CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    esp_wifi_internal_modem_state_configure(false);
+    esp_pm_unregister_skip_light_sleep_callback(sleep_modem_wifi_modem_state_skip_light_sleep);
 #endif
     esp_phy_modem_deinit();
 
@@ -231,12 +235,12 @@ esp_err_t esp_wifi_init(const wifi_init_config_t *config)
 #endif
 
 #if CONFIG_ESP_WIFI_SLP_IRAM_OPT
-    esp_pm_register_light_sleep_default_params_config_callback(esp_wifi_internal_update_light_sleep_default_params);
-
     int min_freq_mhz = esp_pm_impl_get_cpu_freq(PM_MODE_LIGHT_SLEEP);
     int max_freq_mhz = esp_pm_impl_get_cpu_freq(PM_MODE_CPU_MAX);
     esp_wifi_internal_update_light_sleep_default_params(min_freq_mhz, max_freq_mhz);
 
+    esp_pm_register_light_sleep_default_params_config_callback(esp_wifi_internal_update_light_sleep_default_params);
+
     uint32_t sleep_delay_us = CONFIG_ESP_WIFI_SLP_DEFAULT_MIN_ACTIVE_TIME * 1000;
     esp_wifi_set_sleep_delay_time(sleep_delay_us);
 
@@ -291,6 +295,12 @@ esp_err_t esp_wifi_init(const wifi_init_config_t *config)
         esp_wifi_internal_set_mac_sleep(true);
 #endif
         esp_phy_modem_init();
+#if CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+        if (sleep_modem_wifi_modem_state_enabled()) {
+            esp_pm_register_skip_light_sleep_callback(sleep_modem_wifi_modem_state_skip_light_sleep);
+            esp_wifi_internal_modem_state_configure(true); /* require WiFi to enable automatically receives the beacon */
+        }
+#endif
 #if CONFIG_IDF_TARGET_ESP32
         s_wifi_mac_time_update_cb = esp_wifi_internal_update_mac_time;
 #endif