Merge 6.11-rc7 into usb-next

We need the USB fixes in here as well, and this also resolves the merge
conflict in:
	drivers/usb/typec/ucsi/ucsi.c

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 34 insertions, 24 deletions

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index ccc3895dbd7f..9eb085f359ce 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1387,6 +1387,21 @@ static int dwc3_core_init(struct dwc3 *dwc)
 	}
 
 	/*
+	 * STAR 9001285599: This issue affects DWC_usb3 version 3.20a
+	 * only. If the PM TIMER ECM is enabled through GUCTL2[19], the
+	 * link compliance test (TD7.21) may fail. If the ECN is not
+	 * enabled (GUCTL2[19] = 0), the controller will use the old timer
+	 * value (5us), which is still acceptable for the link compliance
+	 * test. Therefore, do not enable PM TIMER ECM in 3.20a by
+	 * setting GUCTL2[19] by default; instead, use GUCTL2[19] = 0.
+	 */
+	if (DWC3_VER_IS(DWC3, 320A)) {
+		reg = dwc3_readl(dwc->regs, DWC3_GUCTL2);
+		reg &= ~DWC3_GUCTL2_LC_TIMER;
+		dwc3_writel(dwc->regs, DWC3_GUCTL2, reg);
+	}
+
+	/*
 	 * When configured in HOST mode, after issuing U3/L2 exit controller
 	 * fails to send proper CRC checksum in CRC5 feild. Because of this
 	 * behaviour Transaction Error is generated, resulting in reset and
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 1e561fd8b86e..c71240e8f7c7 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -421,6 +421,7 @@
 
 /* Global User Control Register 2 */
 #define DWC3_GUCTL2_RST_ACTBITLATER		BIT(14)
+#define DWC3_GUCTL2_LC_TIMER			BIT(19)
 
 /* Global User Control Register 3 */
 #define DWC3_GUCTL3_SPLITDISABLE		BIT(14)
@@ -1269,6 +1270,7 @@ struct dwc3 {
 #define DWC3_REVISION_290A	0x5533290a
 #define DWC3_REVISION_300A	0x5533300a
 #define DWC3_REVISION_310A	0x5533310a
+#define DWC3_REVISION_320A	0x5533320a
 #define DWC3_REVISION_330A	0x5533330a
 
 #define DWC31_REVISION_ANY	0x0
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 89fc690fdf34..291bc549935b 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -287,6 +287,23 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc, bool async);
  *
  * Caller should handle locking. This function will issue @cmd with given
  * @params to @dep and wait for its completion.
+ *
+ * According to the programming guide, if the link state is in L1/L2/U3,
+ * then sending the Start Transfer command may not complete. The
+ * programming guide suggested to bring the link state back to ON/U0 by
+ * performing remote wakeup prior to sending the command. However, don't
+ * initiate remote wakeup when the user/function does not send wakeup
+ * request via wakeup ops. Send the command when it's allowed.
+ *
+ * Notes:
+ * For L1 link state, issuing a command requires the clearing of
+ * GUSB2PHYCFG.SUSPENDUSB2, which turns on the signal required to complete
+ * the given command (usually within 50us). This should happen within the
+ * command timeout set by driver. No additional step is needed.
+ *
+ * For L2 or U3 link state, the gadget is in USB suspend. Care should be
+ * taken when sending Start Transfer command to ensure that it's done after
+ * USB resume.
  */
 int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
 		struct dwc3_gadget_ep_cmd_params *params)
@@ -327,30 +344,6 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
 			dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
 	}
 
-	if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
-		int link_state;
-
-		/*
-		 * Initiate remote wakeup if the link state is in U3 when
-		 * operating in SS/SSP or L1/L2 when operating in HS/FS. If the
-		 * link state is in U1/U2, no remote wakeup is needed. The Start
-		 * Transfer command will initiate the link recovery.
-		 */
-		link_state = dwc3_gadget_get_link_state(dwc);
-		switch (link_state) {
-		case DWC3_LINK_STATE_U2:
-			if (dwc->gadget->speed >= USB_SPEED_SUPER)
-				break;
-
-			fallthrough;
-		case DWC3_LINK_STATE_U3:
-			ret = __dwc3_gadget_wakeup(dwc, false);
-			dev_WARN_ONCE(dwc->dev, ret, "wakeup failed --> %d\n",
-					ret);
-			break;
-		}
-	}
-
 	/*
 	 * For some commands such as Update Transfer command, DEPCMDPARn
 	 * registers are reserved. Since the driver often sends Update Transfer