esp_phy: phy track pll logic refactor

components/esp_phy/CMakeLists.txt

@@ -5,7 +5,7 @@ if(IDF_TARGET STREQUAL "esp32p4")
     return()
 endif()
 
-set(srcs "src/phy_override.c" "src/lib_printf.c")
+set(srcs "src/phy_override.c" "src/lib_printf.c" "src/phy_common.c")
 
 if(CONFIG_APP_NO_BLOBS)
     set(link_binary_libs 0)

components/esp_phy/include/esp_phy_init.h

@@ -258,6 +258,17 @@ esp_err_t esp_phy_apply_phy_init_data(uint8_t *init_data);
  */
 char * get_phy_version_str(void);
 
+/**
+ * @brief Enable phy track pll
+ *
+ */
+void phy_track_pll_init(void);
+
+/**
+ * @brief Disable phy track pll
+ *
+ */
+void phy_track_pll_deinit(void);
 #ifdef __cplusplus
 }
 #endif

components/esp_phy/src/phy_common.c

@@ -0,0 +1,46 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "esp_timer.h"
+#include <stdint.h>
+
+
+extern void bt_track_pll_cap(void);
+static esp_timer_handle_t phy_track_pll_timer;
+static volatile int64_t s_previous_timestamp;
+#define PHY_TRACK_PLL_PERIOD_IN_US 1000000
+
+static void phy_track_pll_timer_callback(void* arg)
+{
+#if IEEE802154_ENABLED || BT_ENABLED
+    bt_track_pll_cap();
+#endif
+    s_previous_timestamp = esp_timer_get_time();
+}
+
+void phy_track_pll_init(void)
+{
+    // Light sleep scenario: enabling and disabling PHY frequently, the timer will not get triggered.
+    // Using a variable to record the previously tracked time when PLL was last called.
+    // If the duration is larger than PHY_TRACK_PLL_PERIOD_IN_US, then track PLL.
+    int64_t now = esp_timer_get_time();
+    if (now - s_previous_timestamp > PHY_TRACK_PLL_PERIOD_IN_US) {
+        phy_track_pll_timer_callback((void* )0);
+    }
+
+    const esp_timer_create_args_t phy_track_pll_timer_args = {
+            .callback = &phy_track_pll_timer_callback,
+            .name = "phy-track-pll-timer"
+    };
+    ESP_ERROR_CHECK(esp_timer_create(&phy_track_pll_timer_args, &phy_track_pll_timer));
+    ESP_ERROR_CHECK(esp_timer_start_periodic(phy_track_pll_timer, PHY_TRACK_PLL_PERIOD_IN_US));
+}
+
+void phy_track_pll_deinit(void)
+{
+    ESP_ERROR_CHECK(esp_timer_stop(phy_track_pll_timer));
+    ESP_ERROR_CHECK(esp_timer_delete(phy_track_pll_timer));
+}

components/esp_phy/src/phy_init_esp32hxx.c

@@ -53,6 +53,7 @@ void esp_phy_enable(void)
         } else {
             phy_wakeup_init();
         }
+        phy_track_pll_init();
     }
 
     s_phy_access_ref++;
@@ -69,6 +70,7 @@ void esp_phy_disable(void)
     }
 
     if (s_phy_access_ref == 0) {
+        phy_track_pll_deinit();
         phy_close_rf();
         phy_xpd_tsens();
     }