Merge tag 'usb-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB and Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver changes for
  5.12-rc1.

  It's been an active set of development in these subsystems for the
  past few months:

   - loads of typec features added for new hardware

   - xhci features and bugfixes

   - dwc3 features added for more hardware support

   - dwc2 fixes and new hardware support

   - cdns3 driver updates for more hardware support

   - gadget driver cleanups and minor fixes

   - usb-serial fixes, new driver, and more devices supported

   - thunderbolt feature additions for new hardware

   - lots of other tiny fixups and additions

  The chrome driver changes are in here as well, as they depended on
  some of the typec changes, and the maintainer acked them.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (300 commits)
  dt-bindings: usb: mediatek: musb: add mt8516 compatbile
  dt-bindings: usb: mtk-xhci: add compatible for mt2701 and mt7623
  dt-bindings: usb: mtk-xhci: add optional assigned clock properties
  Documentation: connector: Update the description of sink-vdos
  usb: misc: usb3503: Fix logic in usb3503_init()
  dt-bindings: usb: usb-device: fix typo in required properties
  usb: Replace lkml.org links with lore
  dt-bindings: usb: dwc3: add description for rk3328
  dt-bindings: usb: convert rockchip,dwc3.txt to yaml
  usb: quirks: add quirk to start video capture on ELMO L-12F document camera reliable
  USB: quirks: sort quirk entries
  USB: serial: drop bogus to_usb_serial_port() checks
  USB: serial: make remove callback return void
  USB: serial: drop if with an always false condition
  usb: gadget: Assign boolean values to a bool variable
  usb: typec: tcpm: Get Sink VDO from fwnode
  dt-bindings: connector: Add SVDM VDO properties
  usb: typec: displayport: Fill the negotiated SVDM Version in the header
  usb: typec: ucsi: Determine common SVDM Version
  usb: typec: tcpm: Determine common SVDM Version
  ...

1 files changed, 107 insertions, 12 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 1682f8b454a2..9c3fe08e8f18 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -281,10 +281,16 @@ bool osc_sb_apei_support_acked;
 bool osc_pc_lpi_support_confirmed;
 EXPORT_SYMBOL_GPL(osc_pc_lpi_support_confirmed);
 
+/*
+ * ACPI 6.4 Operating System Capabilities for USB.
+ */
+bool osc_sb_native_usb4_support_confirmed;
+EXPORT_SYMBOL_GPL(osc_sb_native_usb4_support_confirmed);
+
 static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48";
-static void acpi_bus_osc_support(void)
+static void acpi_bus_osc_negotiate_platform_control(void)
 {
-	u32 capbuf[2];
+	u32 capbuf[2], *capbuf_ret;
 	struct acpi_osc_context context = {
 		.uuid_str = sb_uuid_str,
 		.rev = 1,
@@ -317,21 +323,109 @@ static void acpi_bus_osc_support(void)
 	if (IS_ENABLED(CONFIG_SCHED_MC_PRIO))
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_DIVERSE_HIGH_SUPPORT;
 
+	if (IS_ENABLED(CONFIG_USB4))
+		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_NATIVE_USB4_SUPPORT;
+
 	if (!ghes_disable)
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
 	if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
 		return;
-	if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
-		u32 *capbuf_ret = context.ret.pointer;
-		if (context.ret.length > OSC_SUPPORT_DWORD) {
-			osc_sb_apei_support_acked =
-				capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
-			osc_pc_lpi_support_confirmed =
-				capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_PCLPI_SUPPORT;
-		}
+
+	if (ACPI_FAILURE(acpi_run_osc(handle, &context)))
+		return;
+
+	capbuf_ret = context.ret.pointer;
+	if (context.ret.length <= OSC_SUPPORT_DWORD) {
 		kfree(context.ret.pointer);
+		return;
+	}
+
+	/*
+	 * Now run _OSC again with query flag clear and with the caps
+	 * supported by both the OS and the platform.
+	 */
+	capbuf[OSC_QUERY_DWORD] = 0;
+	capbuf[OSC_SUPPORT_DWORD] = capbuf_ret[OSC_SUPPORT_DWORD];
+	kfree(context.ret.pointer);
+
+	if (ACPI_FAILURE(acpi_run_osc(handle, &context)))
+		return;
+
+	capbuf_ret = context.ret.pointer;
+	if (context.ret.length > OSC_SUPPORT_DWORD) {
+		osc_sb_apei_support_acked =
+			capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
+		osc_pc_lpi_support_confirmed =
+			capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_PCLPI_SUPPORT;
+		osc_sb_native_usb4_support_confirmed =
+			capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_NATIVE_USB4_SUPPORT;
 	}
-	/* do we need to check other returned cap? Sounds no */
+
+	kfree(context.ret.pointer);
+}
+
+/*
+ * Native control of USB4 capabilities. If any of the tunneling bits is
+ * set it means OS is in control and we use software based connection
+ * manager.
+ */
+u32 osc_sb_native_usb4_control;
+EXPORT_SYMBOL_GPL(osc_sb_native_usb4_control);
+
+static void acpi_bus_decode_usb_osc(const char *msg, u32 bits)
+{
+	printk(KERN_INFO PREFIX "%s USB3%c DisplayPort%c PCIe%c XDomain%c\n", msg,
+	       (bits & OSC_USB_USB3_TUNNELING) ? '+' : '-',
+	       (bits & OSC_USB_DP_TUNNELING) ? '+' : '-',
+	       (bits & OSC_USB_PCIE_TUNNELING) ? '+' : '-',
+	       (bits & OSC_USB_XDOMAIN) ? '+' : '-');
+}
+
+static u8 sb_usb_uuid_str[] = "23A0D13A-26AB-486C-9C5F-0FFA525A575A";
+static void acpi_bus_osc_negotiate_usb_control(void)
+{
+	u32 capbuf[3];
+	struct acpi_osc_context context = {
+		.uuid_str = sb_usb_uuid_str,
+		.rev = 1,
+		.cap.length = sizeof(capbuf),
+		.cap.pointer = capbuf,
+	};
+	acpi_handle handle;
+	acpi_status status;
+	u32 control;
+
+	if (!osc_sb_native_usb4_support_confirmed)
+		return;
+
+	if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
+		return;
+
+	control = OSC_USB_USB3_TUNNELING | OSC_USB_DP_TUNNELING |
+		  OSC_USB_PCIE_TUNNELING | OSC_USB_XDOMAIN;
+
+	capbuf[OSC_QUERY_DWORD] = 0;
+	capbuf[OSC_SUPPORT_DWORD] = 0;
+	capbuf[OSC_CONTROL_DWORD] = control;
+
+	status = acpi_run_osc(handle, &context);
+	if (ACPI_FAILURE(status))
+		return;
+
+	if (context.ret.length != sizeof(capbuf)) {
+		printk(KERN_INFO PREFIX "USB4 _OSC: returned invalid length buffer\n");
+		goto out_free;
+	}
+
+	osc_sb_native_usb4_control =
+		control & ((u32 *)context.ret.pointer)[OSC_CONTROL_DWORD];
+
+	acpi_bus_decode_usb_osc("USB4 _OSC: OS supports", control);
+	acpi_bus_decode_usb_osc("USB4 _OSC: OS controls",
+				osc_sb_native_usb4_control);
+
+out_free:
+	kfree(context.ret.pointer);
 }
 
 /* --------------------------------------------------------------------------
@@ -1168,7 +1262,8 @@ static int __init acpi_bus_init(void)
 	 * _OSC method may exist in module level code,
 	 * so it must be run after ACPI_FULL_INITIALIZATION
 	 */
-	acpi_bus_osc_support();
+	acpi_bus_osc_negotiate_platform_control();
+	acpi_bus_osc_negotiate_usb_control();
 
 	/*
 	 * _PDC control method may load dynamic SSDT tables,