Merge tag 'usb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/Thunderbolt updates from Greg KH:
 "Here is the "big" set of USB and Thunderbolt changes for 6.7-rc1.
  Nothing really major in here, just lots of constant development for
  new hardware. Included in here are:

   - Thunderbolt (i.e. USB4) fixes for reported issues and support for
     new hardware types and devices

   - USB typec additions of new drivers and cleanups for some existing
     ones

   - xhci cleanups and expanded tracing support and some platform
     specific updates

   - USB "La Jolla Cove Adapter (LJCA)" support added, and the gpio,
     spi, and i2c drivers for that type of device (all acked by the
     respective subsystem maintainers.)

   - lots of USB gadget driver updates and cleanups

   - new USB dwc3 platforms supported, as well as other dwc3 fixes and
     cleanups

   - USB chipidea driver updates

   - other smaller driver cleanups and additions, full details in the
     shortlog

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

* tag 'usb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (167 commits)
  usb: gadget: uvc: Add missing initialization of ssp config descriptor
  usb: storage: set 1.50 as the lower bcdDevice for older "Super Top" compatibility
  usb: raw-gadget: report suspend, resume, reset, and disconnect events
  usb: raw-gadget: don't disable device if usb_ep_queue fails
  usb: raw-gadget: properly handle interrupted requests
  usb:cdnsp: remove TRB_FLUSH_ENDPOINT command
  usb: gadget: aspeed_udc: Convert to platform remove callback returning void
  dt-bindings: usb: fsa4480: Add compatible for OCP96011
  usb: typec: fsa4480: Add support to swap SBU orientation
  dt-bindings: usb: fsa4480: Add data-lanes property to endpoint
  usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()
  Revert "dt-bindings: usb: Add bindings for multiport properties on DWC3 controller"
  Revert "dt-bindings: usb: qcom,dwc3: Add bindings for SC8280 Multiport"
  thunderbolt: Fix one kernel-doc comment
  usb: gadget: f_ncm: Always set current gadget in ncm_bind()
  usb: core: Remove duplicated check in usb_hub_create_port_device
  usb: typec: tcpm: Add additional checks for contaminant
  arm64: dts: rockchip: rk3588s: Add USB3 host controller
  usb: dwc3: add optional PHY interface clocks
  dt-bindings: usb: add rk3588 compatible to rockchip,dwc3
  ...

1 files changed, 145 insertions, 0 deletions

diff --git a/include/linux/usb/ljca.h b/include/linux/usb/ljca.h
new file mode 100644
index 000000000000..47661feda96c
--- /dev/null
+++ b/include/linux/usb/ljca.h
@@ -0,0 +1,145 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2023, Intel Corporation. All rights reserved.
+ */
+#ifndef _LINUX_USB_LJCA_H_
+#define _LINUX_USB_LJCA_H_
+
+#include <linux/auxiliary_bus.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#define LJCA_MAX_GPIO_NUM 64
+
+#define auxiliary_dev_to_ljca_client(auxiliary_dev)			\
+		container_of(auxiliary_dev, struct ljca_client, auxdev)
+
+struct ljca_adapter;
+
+/**
+ * typedef ljca_event_cb_t - event callback function signature
+ *
+ * @context: the execution context of who registered this callback
+ * @cmd: the command from device for this event
+ * @evt_data: the event data payload
+ * @len: the event data payload length
+ *
+ * The callback function is called in interrupt context and the data payload is
+ * only valid during the call. If the user needs later access of the data, it
+ * must copy it.
+ */
+typedef void (*ljca_event_cb_t)(void *context, u8 cmd, const void *evt_data, int len);
+
+/**
+ * struct ljca_client - represent a ljca client device
+ *
+ * @type: ljca client type
+ * @id: ljca client id within same client type
+ * @link: ljca client on the same ljca adapter
+ * @auxdev: auxiliary device object
+ * @adapter: ljca adapter the ljca client sit on
+ * @context: the execution context of the event callback
+ * @event_cb: ljca client driver register this callback to get
+ *	firmware asynchronous rx buffer pending notifications
+ * @event_cb_lock: spinlock to protect event callback
+ */
+struct ljca_client {
+	u8 type;
+	u8 id;
+	struct list_head link;
+	struct auxiliary_device auxdev;
+	struct ljca_adapter *adapter;
+
+	void *context;
+	ljca_event_cb_t event_cb;
+	/* lock to protect event_cb */
+	spinlock_t event_cb_lock;
+};
+
+/**
+ * struct ljca_gpio_info - ljca gpio client device info
+ *
+ * @num: ljca gpio client device pin number
+ * @valid_pin_map: ljca gpio client device valid pin mapping
+ */
+struct ljca_gpio_info {
+	unsigned int num;
+	DECLARE_BITMAP(valid_pin_map, LJCA_MAX_GPIO_NUM);
+};
+
+/**
+ * struct ljca_i2c_info - ljca i2c client device info
+ *
+ * @id: ljca i2c client device identification number
+ * @capacity: ljca i2c client device capacity
+ * @intr_pin: ljca i2c client device interrupt pin number if exists
+ */
+struct ljca_i2c_info {
+	u8 id;
+	u8 capacity;
+	u8 intr_pin;
+};
+
+/**
+ * struct ljca_spi_info - ljca spi client device info
+ *
+ * @id: ljca spi client device identification number
+ * @capacity: ljca spi client device capacity
+ */
+struct ljca_spi_info {
+	u8 id;
+	u8 capacity;
+};
+
+/**
+ * ljca_register_event_cb - register a callback function to receive events
+ *
+ * @client: ljca client device
+ * @event_cb: callback function
+ * @context: execution context of event callback
+ *
+ * Return: 0 in case of success, negative value in case of error
+ */
+int ljca_register_event_cb(struct ljca_client *client, ljca_event_cb_t event_cb, void *context);
+
+/**
+ * ljca_unregister_event_cb - unregister the callback function for an event
+ *
+ * @client: ljca client device
+ */
+void ljca_unregister_event_cb(struct ljca_client *client);
+
+/**
+ * ljca_transfer - issue a LJCA command and wait for a response
+ *
+ * @client: ljca client device
+ * @cmd: the command to be sent to the device
+ * @obuf: the buffer to be sent to the device; it can be NULL if the user
+ *	doesn't need to transmit data with this command
+ * @obuf_len: the size of the buffer to be sent to the device; it should
+ *	be 0 when obuf is NULL
+ * @ibuf: any data associated with the response will be copied here; it can be
+ *	NULL if the user doesn't need the response data
+ * @ibuf_len: must be initialized to the input buffer size
+ *
+ * Return: the actual length of response data for success, negative value for errors
+ */
+int ljca_transfer(struct ljca_client *client, u8 cmd, const u8 *obuf,
+		  u8 obuf_len, u8 *ibuf, u8 ibuf_len);
+
+/**
+ * ljca_transfer_noack - issue a LJCA command without a response
+ *
+ * @client: ljca client device
+ * @cmd: the command to be sent to the device
+ * @obuf: the buffer to be sent to the device; it can be NULL if the user
+ *	doesn't need to transmit data with this command
+ * @obuf_len: the size of the buffer to be sent to the device
+ *
+ * Return: 0 for success, negative value for errors
+ */
+int ljca_transfer_noack(struct ljca_client *client, u8 cmd, const u8 *obuf,
+			u8 obuf_len);
+
+#endif