fix(usb_dwc_hal): Enabled precise detection of VBUS

components/hal/esp32p4/include/hal/usb_wrap_ll.h

@@ -12,6 +12,7 @@
 #include "soc/lp_system_struct.h"
 #include "soc/lp_clkrst_struct.h"
 #include "soc/hp_sys_clkrst_struct.h"
+#include "soc/hp_system_struct.h" // For HP_SYSTEM domain
 #include "soc/usb_wrap_struct.h"
 #include "hal/usb_wrap_types.h"
 
@@ -262,6 +263,14 @@ FORCE_INLINE_ATTR void usb_wrap_ll_reset_register(void)
 // P_AON_CLKRST.hp_usb_clkrst_ctrlx are shared registers, so this function must be used in an atomic way
 #define usb_wrap_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; usb_wrap_ll_reset_register(__VA_ARGS__)
 
+/* ------------------------------- HP System  ------------------------------- */
+
+FORCE_INLINE_ATTR void usb_wrap_ll_enable_precise_detection(void)
+{
+    // Enable VBUS precise detection
+    HP_SYSTEM.sys_usbotg20_ctrl.sys_otg_suspendm = 1;
+}
+
 #ifdef __cplusplus
 }
 #endif

components/usb/test_apps/hcd/main/test_hcd_port.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,29 @@
 #define URB_DATA_BUFF_SIZE          (sizeof(usb_setup_packet_t) + TRANSFER_MAX_BYTES)   // 256 is worst case size for configuration descriptors
 #define POST_ENQUEUE_DELAY_US       10
 
+/*
+Test a port for a disconnect event, when port is in ENABLED state
+
+Purpose: This test is essential on HS HCD ports, when device is detaching during the action.
+    When the HS port is ENABLED, the port operates in HS mode and device disconnection is detected by HS logic.
+    When the HS port is DISABLED (without issuing a reset), the port operates in FS mode and device disconnection differs for HS mode disconnection logic.
+
+Procedure:
+    - Setup the HCD and a port
+    - Trigger the port connection event
+    - Trigger the port disconnection event
+    - Teardown port and HCD
+*/
+TEST_CASE("Test HCD port disconnect event, port enabled", "[port][low_speed][full_speed]")
+{
+    usb_speed_t port_speed = test_hcd_wait_for_conn(port_hdl); // Trigger a connection
+    printf("Connected %s speed device \n", (char*[]) {
+        "Low", "Full", "High"
+    }[port_speed]);
+    vTaskDelay(pdMS_TO_TICKS(100)); // Short delay send of SOF (for FS) or EOPs (for LS)
+    test_hcd_wait_for_disconn(port_hdl, true);
+}
+
 /*
 Test a port sudden disconnect and port recovery
 

components/usb/usb_phy_p4.c

@@ -6,11 +6,27 @@
 
 // This is only a dummy USB PHY file for successful linking of ESP32-P4 target
 // The internal HS PHY is enabled by default, therefore it needs no configuration
+
+// TODO: Refactor during the IDF-9198
+#include "sdkconfig.h"
+#include "soc/usb_dwc_cfg.h"
+#include "hal/usb_wrap_hal.h"
 // TODO: Remove this file when proper support of P4 PHYs is implemented IDF-7323
 #include "esp_private/usb_phy.h"
 
 esp_err_t usb_new_phy(const usb_phy_config_t *config, usb_phy_handle_t *handle_ret)
 {
+#if (OTG_HSPHY_INTERFACE != 0)
+#if CONFIG_IDF_TARGET_ESP32P4
+    /*
+    Additional setting to solve missing DCONN event on ESP32P4 (IDF-9953).
+
+    Note: On ESP32P4, the HP_SYSTEM_OTG_SUSPENDM is not connected to 1 by hardware.
+    For correct detection of the device detaching, internal signal should be set to 1 by the software.
+    */
+    usb_wrap_ll_enable_precise_detection();
+#endif // CONFIG_IDF_TARGET_ESP32P4
+#endif // (OTG_HSPHY_INTERFACE != 0)
     return ESP_OK;
 }