From 3302c07d129e8a6c2631a9b15d5a3549b455a3ea Mon Sep 17 00:00:00 2001
From: HiFiPhile <admin@hifiphile.com>
Date: Fri, 28 Nov 2025 15:37:57 +0100
Subject: dwc2: implement deinit

Signed-off-by: HiFiPhile <admin@hifiphile.com>
---
 src/portable/synopsys/dwc2/dcd_dwc2.c    | 12 ++++++++++++
 src/portable/synopsys/dwc2/dwc2_common.c | 13 +++++++++++++
 src/portable/synopsys/dwc2/dwc2_common.h |  1 +
 src/portable/synopsys/dwc2/hcd_dwc2.c    | 10 ++++++++++
 4 files changed, 36 insertions(+)

(limited to 'src')

diff --git a/src/portable/synopsys/dwc2/dcd_dwc2.c b/src/portable/synopsys/dwc2/dcd_dwc2.c
index 44f7137f9..57dcb6fba 100644
--- a/src/portable/synopsys/dwc2/dcd_dwc2.c
+++ b/src/portable/synopsys/dwc2/dcd_dwc2.c
@@ -491,6 +491,18 @@ bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   return true;
 }
 
+bool dcd_deinit(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  // Disable global interrupt
+  dwc2->gahbcfg &= ~GAHBCFG_GINT;
+
+  dcd_disconnect(rhport);
+
+  dwc2_core_deinit(rhport);
+  return true;
+}
+
 void dcd_int_enable(uint8_t rhport) {
   dwc2_dcd_int_enable(rhport);
 }
diff --git a/src/portable/synopsys/dwc2/dwc2_common.c b/src/portable/synopsys/dwc2/dwc2_common.c
index a7e6188df..ce38ed6ec 100644
--- a/src/portable/synopsys/dwc2/dwc2_common.c
+++ b/src/portable/synopsys/dwc2/dwc2_common.c
@@ -251,6 +251,19 @@ bool dwc2_core_init(uint8_t rhport, bool is_highspeed, bool is_dma) {
   return true;
 }
 
+void dwc2_core_deinit(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  // Soft disconnect
+  dwc2->dctl |= DCTL_SDIS;
+
+  // Reset global registers
+  dwc2->gotgctl = 0;
+
+  // Reset core
+  reset_core(dwc2);
+}
+
 // void dwc2_core_handle_common_irq(uint8_t rhport, bool in_isr) {
 //   (void) in_isr;
 //   dwc2_regs_t * const dwc2 = DWC2_REG(rhport);
diff --git a/src/portable/synopsys/dwc2/dwc2_common.h b/src/portable/synopsys/dwc2/dwc2_common.h
index 428304ba9..af532dc5e 100644
--- a/src/portable/synopsys/dwc2/dwc2_common.h
+++ b/src/portable/synopsys/dwc2/dwc2_common.h
@@ -86,6 +86,7 @@ TU_ATTR_ALWAYS_INLINE static inline dwc2_regs_t* DWC2_REG(uint8_t rhport) {
 
 bool dwc2_core_is_highspeed(dwc2_regs_t* dwc2, tusb_role_t role);
 bool dwc2_core_init(uint8_t rhport, bool is_highspeed, bool is_dma);
+void dwc2_core_deinit(uint8_t rhport);
 void dwc2_core_handle_common_irq(uint8_t rhport, bool in_isr);
 
 //--------------------------------------------------------------------+
diff --git a/src/portable/synopsys/dwc2/hcd_dwc2.c b/src/portable/synopsys/dwc2/hcd_dwc2.c
index c40703b09..fc27b3f55 100644
--- a/src/portable/synopsys/dwc2/hcd_dwc2.c
+++ b/src/portable/synopsys/dwc2/hcd_dwc2.c
@@ -445,6 +445,16 @@ bool hcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   return true;
 }
 
+bool hcd_deinit(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  // Disable global interrupt
+  dwc2->gahbcfg &= ~GAHBCFG_GINT;
+
+  dwc2_core_deinit(rhport);
+  return true;
+}
+
 // Enable USB interrupt
 void hcd_int_enable (uint8_t rhport) {
   dwc2_int_set(rhport, TUSB_ROLE_HOST, true);
-- 
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