[PATCH AUTOSEL 6.8 01/24] usb: gadget: uvc: configfs: ensure guid to be valid before set

[PATCH AUTOSEL 6.8 01/24] usb: gadget: uvc: configfs: ensure guid to be valid before set

[Sasha Levin]

From: Michael Grzeschik <m.grzeschik@pengutronix.de>

[ Upstream commit f7a7f80ccc8df017507e2b1e1dd652361374d25b ]

When setting the guid via configfs it is possible to test if
its value is one of the kernel supported ones by calling
uvc_format_by_guid on it. If the result is NULL, we know the
guid is unsupported and can be ignored.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20240221-uvc-gadget-configfs-guid-v1-1-f0678ca62ebb@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/function/uvc_configfs.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index a4377df612f51..6fac696ea8463 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -13,6 +13,7 @@
 #include "uvc_configfs.h"
 
 #include <linux/sort.h>
+#include <linux/usb/uvc.h>
 #include <linux/usb/video.h>
 
 /* -----------------------------------------------------------------------------
@@ -2260,6 +2261,8 @@ static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item,
 	struct f_uvc_opts *opts;
 	struct config_item *opts_item;
 	struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex;
+	const struct uvc_format_desc *format;
+	u8 tmpguidFormat[sizeof(ch->desc.guidFormat)];
 	int ret;
 
 	mutex_lock(su_mutex); /* for navigating configfs hierarchy */
@@ -2273,7 +2276,16 @@ static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item,
 		goto end;
 	}
 
-	memcpy(ch->desc.guidFormat, page,
+	memcpy(tmpguidFormat, page,
+	       min(sizeof(tmpguidFormat), len));
+
+	format = uvc_format_by_guid(tmpguidFormat);
+	if (!format) {
+		ret = -EINVAL;
+		goto end;
+	}
+
+	memcpy(ch->desc.guidFormat, tmpguidFormat,
 	       min(sizeof(ch->desc.guidFormat), len));
 	ret = sizeof(ch->desc.guidFormat);
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 03/24] usb: typec: ucsi_glink: rework quirks implementation

[Sasha Levin]

From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

[ Upstream commit 3f81cf54c1889eeecbb8d9188f5f2f597622170e ]

In preparation to adding more quirks, extract quirks to the static
variables and reference them through match->data. Otherwise adding
more quirks will add the table really cumbersome.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240329-qcom-ucsi-fixes-v2-8-0f5d37ed04db@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/typec/ucsi/ucsi_glink.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
index ce08eb33e5bec..0e6f837f6c31b 100644
--- a/drivers/usb/typec/ucsi/ucsi_glink.c
+++ b/drivers/usb/typec/ucsi/ucsi_glink.c
@@ -311,12 +311,14 @@ static void pmic_glink_ucsi_destroy(void *data)
 	mutex_unlock(&ucsi->lock);
 }
 
+static unsigned long quirk_sc8180x = UCSI_NO_PARTNER_PDOS;
+
 static const struct of_device_id pmic_glink_ucsi_of_quirks[] = {
-	{ .compatible = "qcom,qcm6490-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, },
-	{ .compatible = "qcom,sc8180x-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, },
-	{ .compatible = "qcom,sc8280xp-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, },
-	{ .compatible = "qcom,sm8350-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, },
-	{ .compatible = "qcom,sm8550-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, },
+	{ .compatible = "qcom,qcm6490-pmic-glink", .data = &quirk_sc8180x, },
+	{ .compatible = "qcom,sc8180x-pmic-glink", .data = &quirk_sc8180x, },
+	{ .compatible = "qcom,sc8280xp-pmic-glink", .data = &quirk_sc8180x, },
+	{ .compatible = "qcom,sm8350-pmic-glink", .data = &quirk_sc8180x, },
+	{ .compatible = "qcom,sm8550-pmic-glink", .data = &quirk_sc8180x, },
 	{}
 };
 
@@ -354,7 +356,7 @@ static int pmic_glink_ucsi_probe(struct auxiliary_device *adev,
 
 	match = of_match_device(pmic_glink_ucsi_of_quirks, dev->parent);
 	if (match)
-		ucsi->ucsi->quirks = (unsigned long)match->data;
+		ucsi->ucsi->quirks = *(unsigned long *)match->data;
 
 	ucsi_set_drvdata(ucsi->ucsi, ucsi);
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 04/24] usb: misc: uss720: check for incompatible versions of the Belkin F5U002

[Sasha Levin]

From: Alex Henrie <alexhenrie24@gmail.com>

[ Upstream commit 3295f1b866bfbcabd625511968e8a5c541f9ab32 ]

The incompatible device in my possession has a sticker that says
"F5U002 Rev 2" and "P80453-B", and lsusb identifies it as
"050d:0002 Belkin Components IEEE-1284 Controller". There is a bug
report from 2007 from Michael Trausch who was seeing the exact same
errors that I saw in 2024 trying to use this cable.

Link: https://lore.kernel.org/all/46DE5830.9060401@trausch.us/
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Link: https://lore.kernel.org/r/20240326150723.99939-5-alexhenrie24@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/misc/uss720.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c
index b00d92db5dfd1..eb5a8e0d9e2d6 100644
--- a/drivers/usb/misc/uss720.c
+++ b/drivers/usb/misc/uss720.c
@@ -677,7 +677,7 @@ static int uss720_probe(struct usb_interface *intf,
 	struct parport_uss720_private *priv;
 	struct parport *pp;
 	unsigned char reg;
-	int i;
+	int ret;
 
 	dev_dbg(&intf->dev, "probe: vendor id 0x%x, device id 0x%x\n",
 		le16_to_cpu(usbdev->descriptor.idVendor),
@@ -688,8 +688,8 @@ static int uss720_probe(struct usb_interface *intf,
 		usb_put_dev(usbdev);
 		return -ENODEV;
 	}
-	i = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2);
-	dev_dbg(&intf->dev, "set interface result %d\n", i);
+	ret = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2);
+	dev_dbg(&intf->dev, "set interface result %d\n", ret);
 
 	interface = intf->cur_altsetting;
 
@@ -725,12 +725,18 @@ static int uss720_probe(struct usb_interface *intf,
 	set_1284_register(pp, 7, 0x00, GFP_KERNEL);
 	set_1284_register(pp, 6, 0x30, GFP_KERNEL);  /* PS/2 mode */
 	set_1284_register(pp, 2, 0x0c, GFP_KERNEL);
-	/* debugging */
-	get_1284_register(pp, 0, &reg, GFP_KERNEL);
+
+	/* The Belkin F5U002 Rev 2 P80453-B USB parallel port adapter shares the
+	 * device ID 050d:0002 with some other device that works with this
+	 * driver, but it itself does not. Detect and handle the bad cable
+	 * here. */
+	ret = get_1284_register(pp, 0, &reg, GFP_KERNEL);
 	dev_dbg(&intf->dev, "reg: %7ph\n", priv->reg);
+	if (ret < 0)
+		return ret;
 
-	i = usb_find_last_int_in_endpoint(interface, &epd);
-	if (!i) {
+	ret = usb_find_last_int_in_endpoint(interface, &epd);
+	if (!ret) {
 		dev_dbg(&intf->dev, "epaddr %d interval %d\n",
 				epd->bEndpointAddress, epd->bInterval);
 	}
-- 
2.43.0

[PATCH AUTOSEL 6.8 06/24] usb: dwc3: pci: Don't set "linux,phy_charger_detect" property on Lenovo Yoga Tab2 1380

[Sasha Levin]

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 0fb782b5d5c462b2518b3b4fe7d652114c28d613 ]

The Lenovo Yoga Tablet 2 Pro 1380 model is the exception to the rule that
devices which use the Crystal Cove PMIC without using ACPI for battery and
AC power_supply class support use the USB-phy for charger detection.

Unlike the Lenovo Yoga Tablet 2 830 / 1050 models this model has an extra
LC824206XA Micro USB switch which does the charger detection.

Add a DMI quirk to not set the "linux,phy_charger_detect" property on
the 1380 model. This quirk matches on the BIOS version to differentiate
the 1380 model from the 830 and 1050 models which otherwise have
the same DMI strings.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240406140127.17885-1-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/dwc3-pci.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 497deed38c0c1..9ef821ca2fc71 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -8,6 +8,7 @@
  *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
  */
 
+#include <linux/dmi.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -220,6 +221,7 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc,
 
 		if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
 			struct gpio_desc *gpio;
+			const char *bios_ver;
 			int ret;
 
 			/* On BYT the FW does not always enable the refclock */
@@ -277,8 +279,12 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc,
 			 * detection. These can be identified by them _not_
 			 * using the standard ACPI battery and ac drivers.
 			 */
+			bios_ver = dmi_get_system_info(DMI_BIOS_VERSION);
 			if (acpi_dev_present("INT33FD", "1", 2) &&
-			    acpi_quirk_skip_acpi_ac_and_battery()) {
+			    acpi_quirk_skip_acpi_ac_and_battery() &&
+			    /* Lenovo Yoga Tablet 2 Pro 1380 uses LC824206XA instead */
+			    !(bios_ver &&
+			      strstarts(bios_ver, "BLADE_21.X64.0005.R00.1504101516"))) {
 				dev_info(&pdev->dev, "Using TUSB1211 phy for charger detection\n");
 				swnode = &dwc3_pci_intel_phy_charger_detect_swnode;
 			}
-- 
2.43.0

[PATCH AUTOSEL 6.8 07/24] usb: typec: ucsi_glink: drop special handling for CCI_BUSY

[Sasha Levin]

From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

[ Upstream commit 1a395af9d53c6240bf7799abc43b4dc292ca9dd0 ]

Newer Qualcomm platforms (sm8450+) successfully handle busy state and
send the Command Completion after sending the Busy state. Older devices
have firmware bug and can not continue after sending the CCI_BUSY state,
but the command that leads to CCI_BUSY is already forbidden by the
NO_PARTNER_PDOS quirk.

Follow other UCSI glue drivers and drop special handling for CCI_BUSY
event. Let the UCSI core properly handle this state.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240408-qcom-ucsi-fixes-bis-v1-3-716c145ca4b1@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/typec/ucsi/ucsi_glink.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
index 0e6f837f6c31b..1d0e2d87e9b31 100644
--- a/drivers/usb/typec/ucsi/ucsi_glink.c
+++ b/drivers/usb/typec/ucsi/ucsi_glink.c
@@ -176,7 +176,8 @@ static int pmic_glink_ucsi_sync_write(struct ucsi *__ucsi, unsigned int offset,
 	left = wait_for_completion_timeout(&ucsi->sync_ack, 5 * HZ);
 	if (!left) {
 		dev_err(ucsi->dev, "timeout waiting for UCSI sync write response\n");
-		ret = -ETIMEDOUT;
+		/* return 0 here and let core UCSI code handle the CCI_BUSY */
+		ret = 0;
 	} else if (ucsi->sync_val) {
 		dev_err(ucsi->dev, "sync write returned: %d\n", ucsi->sync_val);
 	}
@@ -243,10 +244,7 @@ static void pmic_glink_ucsi_notify(struct work_struct *work)
 		ucsi_connector_change(ucsi->ucsi, con_num);
 	}
 
-	if (ucsi->sync_pending && cci & UCSI_CCI_BUSY) {
-		ucsi->sync_val = -EBUSY;
-		complete(&ucsi->sync_ack);
-	} else if (ucsi->sync_pending &&
+	if (ucsi->sync_pending &&
 		   (cci & (UCSI_CCI_ACK_COMPLETE | UCSI_CCI_COMMAND_COMPLETE))) {
 		complete(&ucsi->sync_ack);
 	}
-- 
2.43.0

[PATCH AUTOSEL 6.8 14/24] usb: gadget: function: Remove usage of the deprecated ida_simple_xx() API

[Sasha Levin]

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit 920e7522e3bab5ebc2fb0cc1a034f4470c87fa97 ]

ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().

Note that the upper limit of ida_simple_get() is exclusive, but the one of
ida_alloc_max() is inclusive. So a -1 has been added when needed.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/7cd361e2b377a5373968fa7deee4169229992a1e.1713107386.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/function/f_hid.c     | 6 +++---
 drivers/usb/gadget/function/f_printer.c | 6 +++---
 drivers/usb/gadget/function/rndis.c     | 4 ++--
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index 3c8a9dd585c09..2db01e03bfbf0 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -1029,9 +1029,9 @@ static inline int hidg_get_minor(void)
 {
 	int ret;
 
-	ret = ida_simple_get(&hidg_ida, 0, 0, GFP_KERNEL);
+	ret = ida_alloc(&hidg_ida, GFP_KERNEL);
 	if (ret >= HIDG_MINORS) {
-		ida_simple_remove(&hidg_ida, ret);
+		ida_free(&hidg_ida, ret);
 		ret = -ENODEV;
 	}
 
@@ -1176,7 +1176,7 @@ static const struct config_item_type hid_func_type = {
 
 static inline void hidg_put_minor(int minor)
 {
-	ida_simple_remove(&hidg_ida, minor);
+	ida_free(&hidg_ida, minor);
 }
 
 static void hidg_free_inst(struct usb_function_instance *f)
diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c
index 076dd4c1be96c..ba7d180cc9e6d 100644
--- a/drivers/usb/gadget/function/f_printer.c
+++ b/drivers/usb/gadget/function/f_printer.c
@@ -1312,9 +1312,9 @@ static inline int gprinter_get_minor(void)
 {
 	int ret;
 
-	ret = ida_simple_get(&printer_ida, 0, 0, GFP_KERNEL);
+	ret = ida_alloc(&printer_ida, GFP_KERNEL);
 	if (ret >= PRINTER_MINORS) {
-		ida_simple_remove(&printer_ida, ret);
+		ida_free(&printer_ida, ret);
 		ret = -ENODEV;
 	}
 
@@ -1323,7 +1323,7 @@ static inline int gprinter_get_minor(void)
 
 static inline void gprinter_put_minor(int minor)
 {
-	ida_simple_remove(&printer_ida, minor);
+	ida_free(&printer_ida, minor);
 }
 
 static int gprinter_setup(int);
diff --git a/drivers/usb/gadget/function/rndis.c b/drivers/usb/gadget/function/rndis.c
index 29bf8664bf582..12c5d9cf450c1 100644
--- a/drivers/usb/gadget/function/rndis.c
+++ b/drivers/usb/gadget/function/rndis.c
@@ -869,12 +869,12 @@ EXPORT_SYMBOL_GPL(rndis_msg_parser);
 
 static inline int rndis_get_nr(void)
 {
-	return ida_simple_get(&rndis_ida, 0, 1000, GFP_KERNEL);
+	return ida_alloc_max(&rndis_ida, 999, GFP_KERNEL);
 }
 
 static inline void rndis_put_nr(int nr)
 {
-	ida_simple_remove(&rndis_ida, nr);
+	ida_free(&rndis_ida, nr);
 }
 
 struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v)
-- 
2.43.0

[PATCH AUTOSEL 6.8 15/24] usb: dwc3: core: Access XHCI address space temporarily to read port info

[Sasha Levin]

From: Krishna Kurapati <quic_kriskura@quicinc.com>

[ Upstream commit 921e109c6200741499ad0136e41cca9d16431c92 ]

All DWC3 Multi Port controllers that exist today only support host mode.
Temporarily map XHCI address space for host-only controllers and parse
XHCI Extended Capabilities registers to read number of usb2 ports and
usb3 ports present on multiport controller. Each USB Port is at least HS
capable.

The port info for usb2 and usb3 phy are identified as num_usb2_ports
and num_usb3_ports and these are used as iterators for phy operations
and for modifying GUSB2PHYCFG/ GUSB3PIPECTL registers accordingly.

Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240420044901.884098-3-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/core.c | 61 +++++++++++++++++++++++++++++++++++++++++
 drivers/usb/dwc3/core.h |  5 ++++
 2 files changed, 66 insertions(+)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 100041320e8dd..2a93468bdce50 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -39,6 +39,7 @@
 #include "io.h"
 
 #include "debug.h"
+#include "../host/xhci-ext-caps.h"
 
 #define DWC3_DEFAULT_AUTOSUSPEND_DELAY	5000 /* ms */
 
@@ -1867,10 +1868,56 @@ static int dwc3_get_clocks(struct dwc3 *dwc)
 	return 0;
 }
 
+static int dwc3_get_num_ports(struct dwc3 *dwc)
+{
+	void __iomem *base;
+	u8 major_revision;
+	u32 offset;
+	u32 val;
+
+	/*
+	 * Remap xHCI address space to access XHCI ext cap regs since it is
+	 * needed to get information on number of ports present.
+	 */
+	base = ioremap(dwc->xhci_resources[0].start,
+		       resource_size(&dwc->xhci_resources[0]));
+	if (!base)
+		return -ENOMEM;
+
+	offset = 0;
+	do {
+		offset = xhci_find_next_ext_cap(base, offset,
+						XHCI_EXT_CAPS_PROTOCOL);
+		if (!offset)
+			break;
+
+		val = readl(base + offset);
+		major_revision = XHCI_EXT_PORT_MAJOR(val);
+
+		val = readl(base + offset + 0x08);
+		if (major_revision == 0x03) {
+			dwc->num_usb3_ports += XHCI_EXT_PORT_COUNT(val);
+		} else if (major_revision <= 0x02) {
+			dwc->num_usb2_ports += XHCI_EXT_PORT_COUNT(val);
+		} else {
+			dev_warn(dwc->dev, "unrecognized port major revision %d\n",
+				 major_revision);
+		}
+	} while (1);
+
+	dev_dbg(dwc->dev, "hs-ports: %u ss-ports: %u\n",
+		dwc->num_usb2_ports, dwc->num_usb3_ports);
+
+	iounmap(base);
+
+	return 0;
+}
+
 static int dwc3_probe(struct platform_device *pdev)
 {
 	struct device		*dev = &pdev->dev;
 	struct resource		*res, dwc_res;
+	unsigned int		hw_mode;
 	void __iomem		*regs;
 	struct dwc3		*dwc;
 	int			ret;
@@ -1954,6 +2001,20 @@ static int dwc3_probe(struct platform_device *pdev)
 			goto err_disable_clks;
 	}
 
+	/*
+	 * Currently only DWC3 controllers that are host-only capable
+	 * can have more than one port.
+	 */
+	hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0);
+	if (hw_mode == DWC3_GHWPARAMS0_MODE_HOST) {
+		ret = dwc3_get_num_ports(dwc);
+		if (ret)
+			goto err_disable_clks;
+	} else {
+		dwc->num_usb2_ports = 1;
+		dwc->num_usb3_ports = 1;
+	}
+
 	spin_lock_init(&dwc->lock);
 	mutex_init(&dwc->mutex);
 
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index d96a28eecbcc3..9309f3dd94fcc 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1038,6 +1038,8 @@ struct dwc3_scratchpad_array {
  * @usb3_phy: pointer to USB3 PHY
  * @usb2_generic_phy: pointer to USB2 PHY
  * @usb3_generic_phy: pointer to USB3 PHY
+ * @num_usb2_ports: number of USB2 ports
+ * @num_usb3_ports: number of USB3 ports
  * @phys_ready: flag to indicate that PHYs are ready
  * @ulpi: pointer to ulpi interface
  * @ulpi_ready: flag to indicate that ULPI is initialized
@@ -1186,6 +1188,9 @@ struct dwc3 {
 	struct phy		*usb2_generic_phy;
 	struct phy		*usb3_generic_phy;
 
+	u8			num_usb2_ports;
+	u8			num_usb3_ports;
+
 	bool			phys_ready;
 
 	struct ulpi		*ulpi;
-- 
2.43.0

Re: [PATCH AUTOSEL 6.8 15/24] usb: dwc3: core: Access XHCI address space temporarily to read port info

[Johan Hovold]

On Wed, Jun 05, 2024 at 07:50:25AM -0400, Sasha Levin wrote:
> From: Krishna Kurapati <quic_kriskura@quicinc.com>
> 
> [ Upstream commit 921e109c6200741499ad0136e41cca9d16431c92 ]
> 
> All DWC3 Multi Port controllers that exist today only support host mode.
> Temporarily map XHCI address space for host-only controllers and parse
> XHCI Extended Capabilities registers to read number of usb2 ports and
> usb3 ports present on multiport controller. Each USB Port is at least HS
> capable.
> 
> The port info for usb2 and usb3 phy are identified as num_usb2_ports
> and num_usb3_ports and these are used as iterators for phy operations
> and for modifying GUSB2PHYCFG/ GUSB3PIPECTL registers accordingly.
> 
> Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
> Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
> Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
> Tested-by: Johan Hovold <johan+linaro@kernel.org>
> Link: https://lore.kernel.org/r/20240420044901.884098-3-quic_kriskura@quicinc.com
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Sasha Levin <sashal@kernel.org>

Same here. Not a fix. Please drop.

Johan

Re: [PATCH AUTOSEL 6.8 15/24] usb: dwc3: core: Access XHCI address space temporarily to read port info

[Sasha Levin]

On Wed, Jun 05, 2024 at 01:54:12PM +0200, Johan Hovold wrote:
>On Wed, Jun 05, 2024 at 07:50:25AM -0400, Sasha Levin wrote:
>> From: Krishna Kurapati <quic_kriskura@quicinc.com>
>>
>> [ Upstream commit 921e109c6200741499ad0136e41cca9d16431c92 ]
>>
>> All DWC3 Multi Port controllers that exist today only support host mode.
>> Temporarily map XHCI address space for host-only controllers and parse
>> XHCI Extended Capabilities registers to read number of usb2 ports and
>> usb3 ports present on multiport controller. Each USB Port is at least HS
>> capable.
>>
>> The port info for usb2 and usb3 phy are identified as num_usb2_ports
>> and num_usb3_ports and these are used as iterators for phy operations
>> and for modifying GUSB2PHYCFG/ GUSB3PIPECTL registers accordingly.
>>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
>> Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com>
>> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
>> Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
>> Tested-by: Johan Hovold <johan+linaro@kernel.org>
>> Link: https://lore.kernel.org/r/20240420044901.884098-3-quic_kriskura@quicinc.com
>> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>Same here. Not a fix. Please drop.

I'll drop the ones you've pointed out, thanks!

-- 
Thanks,
Sasha