ci_hs: add deinit support

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

examples/dual/dynamic_switch/only.txt

@@ -1,4 +1,6 @@
 family:espressif
+mcu:LPC43XX
+mcu:MIMXRT1XXX
 mcu:STM32C0
 mcu:STM32G0
 mcu:STM32H5

hw/bsp/lpc43/family.c

@@ -185,8 +185,10 @@ void board_init(void)
    */
   Chip_USB1_Init();
 
+#ifdef _BOARD_EA4357_H
   // USB0 Vbus Power: P2_3 on EA4357 channel B U20 GPIO26 active low (base board)
   Chip_SCU_PinMuxSet(2, 3, SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC7);
+#endif
 
   #if defined(BOARD_TUD_RHPORT) &&  BOARD_TUD_RHPORT == 0
     // P9_5 (GPIO5[18]) (GPIO28 on oem base) as USB connect, active low.

src/portable/chipidea/ci_hs/dcd_ci_hs.c

@@ -285,6 +285,23 @@ bool dcd_init(uint8_t rhport, const tusb_rhport_init_t *rh_init) {
   return true;
 }
 
+bool dcd_deinit(uint8_t rhport) {
+  ci_hs_regs_t* dcd_reg = CI_HS_REG(rhport);
+
+  // disable all interrupt
+  dcd_reg->USBINTR = 0;
+
+  // unattach from bus
+  dcd_reg->USBCMD &= ~USBCMD_RUN_STOP;
+
+  // flush all endpoints
+  while (dcd_reg->ENDPTPRIME) {}
+  dcd_reg->ENDPTFLUSH = 0xFFFFFFFF;
+  while (dcd_reg->ENDPTFLUSH) {}
+
+  return true;
+}
+
 void dcd_int_enable(uint8_t rhport) {
   CI_DCD_INT_ENABLE(rhport);
 }

src/portable/chipidea/ci_hs/hcd_ci_hs.c

@@ -93,21 +93,25 @@ bool hcd_init(uint8_t rhport, const tusb_rhport_init_t *rh_init) {
   hcd_reg->USBCMD |= USBCMD_RESET;
   while (hcd_reg->USBCMD & USBCMD_RESET) {}
 
-  // Set mode to device, must be set immediately after reset
-  #if CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_LPC43XX
+  // Set mode to host, must be set immediately after reset
+#if CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_LPC43XX
   // LPC18XX/43XX need to set VBUS Power Select to HIGH
   // RHPORT1 is fullspeed only (need external PHY for Highspeed)
   hcd_reg->USBMODE = USBMODE_CM_HOST | USBMODE_VBUS_POWER_SELECT;
-  if (rhport == 1) {
-    hcd_reg->PORTSC1 |= PORTSC1_FORCE_FULL_SPEED;
-  }
-  #else
-  hcd_reg->USBMODE = USBMODE_CM_HOST;
+  #if !TUH_OPT_HIGH_SPEED
+  hcd_reg->PORTSC1 = PORTSC1_FORCE_FULL_SPEED;
   #endif
+#else
+  hcd_reg->USBMODE = USBMODE_CM_HOST;
+#endif
 
   return ehci_init(rhport, (uint32_t)&hcd_reg->CAPLENGTH, (uint32_t)&hcd_reg->USBCMD);
 }
 
+bool hcd_deinit(uint8_t rhport) {
+  return ehci_deinit(rhport);
+}
+
 void hcd_int_enable(uint8_t rhport) {
   CI_HCD_INT_ENABLE(rhport);
 }

src/portable/ehci/ehci.c

@@ -411,17 +411,22 @@ bool ehci_init(uint8_t rhport, uint32_t capability_reg, uint32_t operatial_reg)
   return true;
 }
 
-#if 0
-static void ehci_stop(uint8_t rhport) {
+bool ehci_deinit(uint8_t rhport) {
   (void) rhport;
 
   ehci_registers_t* regs = ehci_data.regs;
+
+  // Disable all the interrupt
+  regs->inten  = 0;
+
+  // Disable schedules
   regs->command_bm.run_stop = 0;
 
   // USB Spec: controller has to stop within 16 uframe = 2 frames
   while( regs->status_bm.hc_halted == 0 ) {}
+
+  return true;
 }
-#endif
 
 //--------------------------------------------------------------------+
 // Endpoint API

src/portable/ehci/ehci_api.h

@@ -38,6 +38,9 @@
 // Initialize EHCI driver
 bool ehci_init(uint8_t rhport, uint32_t capability_reg, uint32_t operatial_reg);
 
+// De-initialize EHCI driver
+bool ehci_deinit(uint8_t rhport);
+
 #ifdef __cplusplus
  }
 #endif