debloat the workaround

Signed-off-by: HiFiPhile <admin@hifiphile.com>

Author: HiFiPhile

src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c

@@ -393,7 +393,7 @@ void dcd_int_handler(uint8_t rhport) {
     const uint32_t ep_reg = ep_read(ep_id);
 
     if (ep_reg & U_EP_CTR_RX) {
-  #ifdef  CFG_TUSB_FSDEV_32BIT
+  #if defined(TUP_USBIP_FSDEV_STM32) && defined(CFG_TUSB_FSDEV_32BIT)
       fsdev_btable_workaround_delay(false);
   #endif
 

src/portable/st/stm32_fsdev/fsdev_common.h

@@ -307,24 +307,6 @@ typedef struct {
   #error "Unknown USB IP"
 #endif
 
-#if defined(TUP_USBIP_FSDEV_STM32) && defined(CFG_TUSB_FSDEV_32BIT)
-  #ifndef CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT
-    #if defined(FSDEV_STM32_CPU_MHZ)
-      #define CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT (FSDEV_STM32_CPU_MHZ / 4U)
-    #else
-      #error "Define CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT or FSDEV_STM32_CPU_MHZ for STM32 FSDEV 32-bit"
-    #endif
-  #endif
-
-  #ifndef CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT
-    #if defined(FSDEV_STM32_CPU_MHZ)
-      #define CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT (FSDEV_STM32_CPU_MHZ * 2U)
-    #else
-      #error "Define CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT or FSDEV_STM32_CPU_MHZ for STM32 FSDEV 32-bit"
-    #endif
-  #endif
-#endif
-
 //--------------------------------------------------------------------+
 // Endpoint Helper
 // - CTR is write 0 to clear
@@ -467,25 +449,6 @@ uint16_t pma_align_buffer_size(uint16_t size, uint8_t *blsize, uint8_t *num_bloc
 // Set RX buffer size
 void btable_set_rx_bufsize(uint32_t ep_id, uint8_t buf_id, uint16_t wCount);
 
-/* STM32 FSDEV PMA Buffer Description Table errata workaround:
- * - ES0561 (STM32H503), ES0587 (STM32U535/U545)
- * - CTR may trigger before final PMA SRAM accesses complete on OUT transfers.
- * - Insert delay before reading PMA count/data.
- *
- * Low-speed path uses CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT, otherwise full-speed count.
- */
-TU_ATTR_ALWAYS_INLINE static inline void fsdev_btable_workaround_delay(bool low_speed) {
-#if defined(TUP_USBIP_FSDEV_STM32) && defined(CFG_TUSB_FSDEV_32BIT)
-  uint32_t cycle_count = low_speed ? CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT : CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT;
-  volatile uint32_t delay_count = cycle_count;
-  while (delay_count > 0U) {
-    delay_count--;
-  }
-#else
-  (void) low_speed;
-#endif
-}
-
 #ifdef __cplusplus
 }
 #endif

src/portable/st/stm32_fsdev/fsdev_stm32.h

@@ -138,26 +138,6 @@
   #error "FSDEV_HAS_SBUF_ISO not defined"
 #endif
 
-#ifndef FSDEV_STM32_CPU_MHZ
-  // Max CPU frequency in MHz, used to derive conservative FSDEV PMA delay defaults.
-  #if CFG_TUSB_MCU == OPT_MCU_STM32H5
-    #define FSDEV_STM32_CPU_MHZ 250U
-  #elif CFG_TUSB_MCU == OPT_MCU_STM32U5
-    #define FSDEV_STM32_CPU_MHZ 160U
-  #elif CFG_TUSB_MCU == OPT_MCU_STM32U3
-    #define FSDEV_STM32_CPU_MHZ 96U
-  #elif CFG_TUSB_MCU == OPT_MCU_STM32U0
-    #define FSDEV_STM32_CPU_MHZ 56U
-  #elif CFG_TUSB_MCU == OPT_MCU_STM32G0
-    #define FSDEV_STM32_CPU_MHZ 64U
-  #elif CFG_TUSB_MCU == OPT_MCU_STM32C0
-    #define FSDEV_STM32_CPU_MHZ 48U
-  #elif defined(CFG_TUSB_FSDEV_32BIT) && \
-      (!defined(CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT) || !defined(CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT))
-    #error "Define FSDEV_STM32_CPU_MHZ or both CFG_TUSB_FSDEV_BTABLE_{FS,LS}_DELAY_COUNT for this STM32 MCU"
-  #endif
-#endif
-
 #ifndef CFG_TUD_FSDEV_DOUBLE_BUFFERED_ISO_EP
   // Default configuration for double-buffered isochronous endpoints:
   // - Enable double buffering on devices with >1KB Packet Memory Area (PMA)
@@ -271,6 +251,45 @@ TU_ATTR_ALWAYS_INLINE static inline void fsdev_int_disable(uint8_t rhport) {
   // CMSIS has a membar after disabling interrupts
 }
 
+//--------------------------------------------------------------------+
+// STM32 FSDEV PMA Buffer Description Table errata workaround:
+//--------------------------------------------------------------------+
+
+// ES0561 (STM32H503), ES0587 (STM32U535/U545)
+// CTR may trigger before final PMA SRAM accesses complete on OUT transfers.
+// Insert delay before reading PMA count/data.
+
+// Max CPU frequency in MHz, used to derive conservative FSDEV PMA delay defaults.
+#if CFG_TUSB_MCU == OPT_MCU_STM32H5
+  #define FSDEV_STM32_CPU_MHZ 250U
+#elif CFG_TUSB_MCU == OPT_MCU_STM32U5
+  #define FSDEV_STM32_CPU_MHZ 160U
+#elif CFG_TUSB_MCU == OPT_MCU_STM32U3
+  #define FSDEV_STM32_CPU_MHZ 96U
+#elif CFG_TUSB_MCU == OPT_MCU_STM32U0
+  #define FSDEV_STM32_CPU_MHZ 56U
+#elif CFG_TUSB_MCU == OPT_MCU_STM32G0
+  #define FSDEV_STM32_CPU_MHZ 64U
+#elif CFG_TUSB_MCU == OPT_MCU_STM32C0
+  #define FSDEV_STM32_CPU_MHZ 48U
+#endif
+
+#ifndef CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT
+  #define CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT (FSDEV_STM32_CPU_MHZ / 4U)
+#endif
+
+#ifndef CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT
+  #define CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT (FSDEV_STM32_CPU_MHZ * 2U)
+#endif
+
+TU_ATTR_ALWAYS_INLINE static inline void fsdev_btable_workaround_delay(bool low_speed) {
+  uint32_t cycle_count = low_speed ? CFG_TUSB_FSDEV_BTABLE_LS_DELAY_COUNT : CFG_TUSB_FSDEV_BTABLE_FS_DELAY_COUNT;
+  volatile uint32_t delay_count = cycle_count;
+  while (delay_count > 0U) {
+    delay_count--;
+  }
+}
+
 //--------------------------------------------------------------------+
 // Connect / Disconnect
 //--------------------------------------------------------------------+

src/portable/st/stm32_fsdev/hcd_stm32_fsdev.c

@@ -197,11 +197,7 @@ bool hcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   // If DCON_STAT is already set, the controller sometimes misses the initial connection interrupt
   if (FSDEV_REG->ISTR & U_ISTR_DCON_STAT) {
-    // Wait DP/DM stabilize time
-    volatile uint32_t cycle_count = FSDEV_STM32_CPU_MHZ / 4U;
-    while (cycle_count > 0U) {
-      cycle_count--;
-    }
+    tusb_time_delay_ms_api(2);
     port_status_handler(rhport, false);
   }