[RFC PATCH v2 49/64] usb: dwc3: import from kernel v6.5
Jens Wiklander
jens.wiklander at linaro.org
Thu May 7 11:27:56 CEST 2026
Sync Linux kernel dwc3 changes from v6.4 to v6.5.
The following files are preserved accross the import:
Makefile Kconfig dwc3-meson-g12a.c dwc3-meson-gxl.c dwc3-omap.c
dwc3-uniphier.c dwc3-generic.h dwc3-generic.c dwc3-generic-sti.c
dwc3-layerscape.c ti_usb_phy.c
Skipping unused files:
debugfs.c drd.c dwc3-exynos.c dwc3-haps.c dwc3-imx8mp.c dwc3-keystone.c
dwc3-octeon.c dwc3-of-simple.c dwc3-pci.c dwc3-qcom.c dwc3-qcom-legacy.c
dwc3-rtk.c dwc3-st.c dwc3-xilinx.c host.c trace.c trace.h ulpi.c
Note that this is a raw import and doesn't build.
A fixup commit at the end of the series fixes that.
List of commits: git log --oneline v6.4..v6.5
Commits imported:
3ddaa6a27457 usb: dwc3: Properly handle processing of pending events
b32b8f2b9542 usb: dwc3: pci: skip BYT GPIO lookup table for hardwired phy
734ae15ab95a Revert "usb: dwc3: core: Enable AutoRetry feature in the controller"
e835c0a4e23c usb: dwc3: don't reset device side if dwc3 was configured as host-only
56cbceab928d Merge tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
c0aabed9cabe usb: dwc3: gadget: Propagate core init errors to UDC during pullup
01052b91c980 usb: dwc3-meson-g12a: Fix an error handling path in dwc3_meson_g12a_probe()
60d5b71933c4 usb: dwc3: qcom: use dev_err_probe() where appropriate
4a944da70712 usb: dwc3: qcom: Fix an error handling path in dwc3_qcom_probe()
8fd95da2cfb5 usb: dwc3: qcom: Release the correct resources in dwc3_qcom_remove()
097fb3ee710d usb: dwc3: qcom: Fix potential memory leak
b4a4be847184 USB: fix up merge of 6.4-rc4 into usb-next
7e530d32a365 Merge 6.4-rc4 into usb-next
5b3eb973bf38 usb: dwc3-xilinx: Convert to platform remove callback returning void
2f6453761e7c usb: dwc3-st: Convert to platform remove callback returning void
d662268dcca8 usb: dwc3-qcom: Convert to platform remove callback returning void
abe04efc13ed usb: dwc3-omap: Convert to platform remove callback returning void
86a2b452179b usb: dwc3-of-simple: Convert to platform remove callback returning void
3ffea6e0f34c usb: dwc3-meson-g12a: Convert to platform remove callback returning void
039e3dede538 usb: dwc3-keystone: Convert to platform remove callback returning void
3791a3e6f455 usb: dwc3-imx8mp: Convert to platform remove callback returning void
8257d5f548d6 usb: dwc3-exynos: Convert to platform remove callback returning void
890258e22117 usb: dwc3-am62: Convert to platform remove callback returning void
0176568702a5 usb: core: Convert to platform remove callback returning void
6bae03b0484b usb: dwc3-meson-g12a: support OTG switch for all IP versions
813f44d57e19 usb: dwc3: gadget: Bail out in pullup if soft reset timeout happens
2f28c3c9c347 usb: dwc3: Add error logs for unknown endpoint events
ec5eb43813a4 usb: dwc3: core: add support for realtek SoCs custom's global register start address
Signed-off-by: Jens Wiklander <jens.wiklander at linaro.org>
---
drivers/usb/dwc3/core.c | 37 +++++++++++++++---------------------
drivers/usb/dwc3/core.h | 5 ++---
drivers/usb/dwc3/dwc3-am62.c | 5 ++---
drivers/usb/dwc3/ep0.c | 3 +++
drivers/usb/dwc3/gadget.c | 22 ++++++++++++++++++---
5 files changed, 41 insertions(+), 31 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index d68958e151a7..9c6bf054f15d 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -277,9 +277,9 @@ int dwc3_core_soft_reset(struct dwc3 *dwc)
/*
* We're resetting only the device side because, if we're in host mode,
* XHCI driver will reset the host block. If dwc3 was configured for
- * host-only mode, then we can return early.
+ * host-only mode or current role is host, then we can return early.
*/
- if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST)
+ if (dwc->dr_mode == USB_DR_MODE_HOST || dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST)
return 0;
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
@@ -1209,22 +1209,6 @@ static int dwc3_core_init(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_GUCTL1, reg);
}
- if (dwc->dr_mode == USB_DR_MODE_HOST ||
- dwc->dr_mode == USB_DR_MODE_OTG) {
- reg = dwc3_readl(dwc->regs, DWC3_GUCTL);
-
- /*
- * Enable Auto retry Feature to make the controller operating in
- * Host mode on seeing transaction errors(CRC errors or internal
- * overrun scenerios) on IN transfers to reply to the device
- * with a non-terminating retry ACK (i.e, an ACK transcation
- * packet with Retry=1 & Nump != 0)
- */
- reg |= DWC3_GUCTL_HSTINAUTORETRY;
-
- dwc3_writel(dwc->regs, DWC3_GUCTL, reg);
- }
-
/*
* Must config both number of packets and max burst settings to enable
* RX and/or TX threshold.
@@ -1800,6 +1784,17 @@ static int dwc3_probe(struct platform_device *pdev)
dwc_res = *res;
dwc_res.start += DWC3_GLOBALS_REGS_START;
+ if (dev->of_node) {
+ struct device_node *parent = of_get_parent(dev->of_node);
+
+ if (of_device_is_compatible(parent, "realtek,rtd-dwc3")) {
+ dwc_res.start -= DWC3_GLOBALS_REGS_START;
+ dwc_res.start += DWC3_RTK_RTD_GLOBALS_REGS_START;
+ }
+
+ of_node_put(parent);
+ }
+
regs = devm_ioremap_resource(dev, &dwc_res);
if (IS_ERR(regs))
return PTR_ERR(regs);
@@ -1913,7 +1908,7 @@ err_put_psy:
return ret;
}
-static int dwc3_remove(struct platform_device *pdev)
+static void dwc3_remove(struct platform_device *pdev)
{
struct dwc3 *dwc = platform_get_drvdata(pdev);
@@ -1940,8 +1935,6 @@ static int dwc3_remove(struct platform_device *pdev)
if (dwc->usb_psy)
power_supply_put(dwc->usb_psy);
-
- return 0;
}
#ifdef CONFIG_PM
@@ -2252,7 +2245,7 @@ MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match);
static struct platform_driver dwc3_driver = {
.probe = dwc3_probe,
- .remove = dwc3_remove,
+ .remove_new = dwc3_remove,
.driver = {
.name = "dwc3",
.of_match_table = of_match_ptr(of_dwc3_match),
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 1f043c31a096..a69ac67d89fe 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -84,6 +84,8 @@
#define DWC3_OTG_REGS_START 0xcc00
#define DWC3_OTG_REGS_END 0xccff
+#define DWC3_RTK_RTD_GLOBALS_REGS_START 0x8100
+
/* Global Registers */
#define DWC3_GSBUSCFG0 0xc100
#define DWC3_GSBUSCFG1 0xc104
@@ -254,9 +256,6 @@
#define DWC3_GCTL_GBLHIBERNATIONEN BIT(1)
#define DWC3_GCTL_DSBLCLKGTNG BIT(0)
-/* Global User Control Register */
-#define DWC3_GUCTL_HSTINAUTORETRY BIT(14)
-
/* Global User Control 1 Register */
#define DWC3_GUCTL1_DEV_DECOUPLE_L1L2_EVT BIT(31)
#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28)
diff --git a/drivers/usb/dwc3/dwc3-am62.c b/drivers/usb/dwc3/dwc3-am62.c
index cda9458c809b..1755f2f848c5 100644
--- a/drivers/usb/dwc3/dwc3-am62.c
+++ b/drivers/usb/dwc3/dwc3-am62.c
@@ -275,7 +275,7 @@ static int dwc3_ti_remove_core(struct device *dev, void *c)
return 0;
}
-static int dwc3_ti_remove(struct platform_device *pdev)
+static void dwc3_ti_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dwc3_data *data = platform_get_drvdata(pdev);
@@ -294,7 +294,6 @@ static int dwc3_ti_remove(struct platform_device *pdev)
pm_runtime_set_suspended(dev);
platform_set_drvdata(pdev, NULL);
- return 0;
}
#ifdef CONFIG_PM
@@ -362,7 +361,7 @@ MODULE_DEVICE_TABLE(of, dwc3_ti_of_match);
static struct platform_driver dwc3_ti_driver = {
.probe = dwc3_ti_probe,
- .remove = dwc3_ti_remove,
+ .remove_new = dwc3_ti_remove,
.driver = {
.name = "dwc3-am62",
.pm = DEV_PM_OPS,
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 953b752a5052..b94243237293 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -1207,5 +1207,8 @@ void dwc3_ep0_interrupt(struct dwc3 *dwc,
dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
}
break;
+ default:
+ dev_err(dwc->dev, "unknown endpoint event %d\n", event->endpoint_event);
+ break;
}
}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b78599dd705c..858fe4c299b7 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2703,13 +2703,17 @@ static int dwc3_gadget_soft_disconnect(struct dwc3 *dwc)
static int dwc3_gadget_soft_connect(struct dwc3 *dwc)
{
+ int ret;
+
/*
* In the Synopsys DWC_usb31 1.90a programming guide section
* 4.1.9, it specifies that for a reconnect after a
* device-initiated disconnect requires a core soft reset
* (DCTL.CSftRst) before enabling the run/stop bit.
*/
- dwc3_core_soft_reset(dwc);
+ ret = dwc3_core_soft_reset(dwc);
+ if (ret)
+ return ret;
dwc3_event_buffers_setup(dwc);
__dwc3_gadget_start(dwc);
@@ -2744,7 +2748,9 @@ static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
ret = pm_runtime_get_sync(dwc->dev);
if (!ret || ret < 0) {
pm_runtime_put(dwc->dev);
- return 0;
+ if (ret < 0)
+ pm_runtime_set_suspended(dwc->dev);
+ return ret;
}
if (dwc->pullups_connected == is_on) {
@@ -3809,6 +3815,9 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
break;
case DWC3_DEPEVT_RXTXFIFOEVT:
break;
+ default:
+ dev_err(dwc->dev, "unknown endpoint event %d\n", event->endpoint_event);
+ break;
}
}
@@ -4446,9 +4455,14 @@ static irqreturn_t dwc3_check_event_buf(struct dwc3_event_buffer *evt)
u32 count;
if (pm_runtime_suspended(dwc->dev)) {
+ dwc->pending_events = true;
+ /*
+ * Trigger runtime resume. The get() function will be balanced
+ * after processing the pending events in dwc3_process_pending
+ * events().
+ */
pm_runtime_get(dwc->dev);
disable_irq_nosync(dwc->irq_gadget);
- dwc->pending_events = true;
return IRQ_HANDLED;
}
@@ -4709,6 +4723,8 @@ void dwc3_gadget_process_pending_events(struct dwc3 *dwc)
{
if (dwc->pending_events) {
dwc3_interrupt(dwc->irq_gadget, dwc->ev_buf);
+ dwc3_thread_interrupt(dwc->irq_gadget, dwc->ev_buf);
+ pm_runtime_put(dwc->dev);
dwc->pending_events = false;
enable_irq(dwc->irq_gadget);
}
--
2.43.0
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