* (C) Copyright 2001
* Denis Peter, MPL AG Switzerland
*
+ * Adapted for U-Boot driver model
+ * (C) Copyright 2015 Google, Inc
+ *
* SPDX-License-Identifier: GPL-2.0+
* Note: Part of this code has been derived from linux
*
#ifndef _USB_H_
#define _USB_H_
+#include <fdtdec.h>
#include <usb_defs.h>
#include <linux/usb/ch9.h>
#include <asm/cache.h>
/* device request (setup) */
struct devrequest {
- unsigned char requesttype;
- unsigned char request;
- unsigned short value;
- unsigned short index;
- unsigned short length;
+ __u8 requesttype;
+ __u8 request;
+ __le16 value;
+ __le16 index;
+ __le16 length;
} __attribute__ ((packed));
/* Interface */
struct usb_interface {
struct usb_interface_descriptor desc;
- unsigned char no_of_ep;
- unsigned char num_altsetting;
- unsigned char act_altsetting;
+ __u8 no_of_ep;
+ __u8 num_altsetting;
+ __u8 act_altsetting;
struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
/*
struct usb_config {
struct usb_config_descriptor desc;
- unsigned char no_of_if; /* number of interfaces */
+ __u8 no_of_if; /* number of interfaces */
struct usb_interface if_desc[USB_MAXINTERFACES];
} __attribute__ ((packed));
PACKET_SIZE_64 = 3,
};
+/**
+ * struct usb_device - information about a USB device
+ *
+ * With driver model both UCLASS_USB (the USB controllers) and UCLASS_USB_HUB
+ * (the hubs) have this as parent data. Hubs are children of controllers or
+ * other hubs and there is always a single root hub for each controller.
+ * Therefore struct usb_device can always be accessed with
+ * dev_get_parentdata(dev), where dev is a USB device.
+ *
+ * Pointers exist for obtaining both the device (could be any uclass) and
+ * controller (UCLASS_USB) from this structure. The controller does not have
+ * a struct usb_device since it is not a device.
+ */
struct usb_device {
int devnum; /* Device number on USB bus */
int speed; /* full/low/high */
* Each instance needs its own set of data structures.
*/
unsigned long status;
+ unsigned long int_pending; /* 1 bit per ep, used by int_queue */
int act_len; /* transfered bytes */
int maxchild; /* Number of ports if hub */
- int portnr;
+ int portnr; /* Port number, 1=first */
+#ifndef CONFIG_DM_USB
+ /* parent hub, or NULL if this is the root hub */
struct usb_device *parent;
struct usb_device *children[USB_MAXCHILDREN];
-
void *controller; /* hardware controller private data */
+#endif
/* slot_id - for xHCI enabled devices */
unsigned int slot_id;
+#ifdef CONFIG_DM_USB
+ struct udevice *dev; /* Pointer to associated device */
+ struct udevice *controller_dev; /* Pointer to associated controller */
+#endif
};
struct int_queue;
* this is how the lowlevel part communicate with the outer world
*/
-#if defined(CONFIG_USB_UHCI) || defined(CONFIG_USB_OHCI) || \
- defined(CONFIG_USB_EHCI) || defined(CONFIG_USB_OHCI_NEW) || \
- defined(CONFIG_USB_SL811HS) || defined(CONFIG_USB_ISP116X_HCD) || \
- defined(CONFIG_USB_R8A66597_HCD) || defined(CONFIG_USB_DAVINCI) || \
- defined(CONFIG_USB_OMAP3) || defined(CONFIG_USB_DA8XX) || \
- defined(CONFIG_USB_BLACKFIN) || defined(CONFIG_USB_AM35X) || \
- defined(CONFIG_USB_MUSB_DSPS) || defined(CONFIG_USB_MUSB_AM35X) || \
- defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined(CONFIG_USB_XHCI) || \
- defined(CONFIG_USB_DWC2)
-
int usb_lowlevel_init(int index, enum usb_init_type init, void **controller);
int usb_lowlevel_stop(int index);
+#if defined(CONFIG_USB_MUSB_HOST) || defined(CONFIG_DM_USB)
+int usb_reset_root_port(struct usb_device *dev);
+#else
+#define usb_reset_root_port(dev)
+#endif
+
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int transfer_len);
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int transfer_len, int interval);
-#ifdef CONFIG_USB_EHCI /* Only the ehci code has pollable int support */
+#if defined CONFIG_USB_EHCI || defined CONFIG_USB_MUSB_HOST || defined(CONFIG_DM_USB)
struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe,
- int queuesize, int elementsize, void *buffer);
+ int queuesize, int elementsize, void *buffer, int interval);
int destroy_int_queue(struct usb_device *dev, struct int_queue *queue);
void *poll_int_queue(struct usb_device *dev, struct int_queue *queue);
#endif
* in boards init functions e.g. udc_disconnect() used for
* forced device disconnection from host.
*/
-#elif defined(CONFIG_USB_GADGET_PXA2XX)
-
extern void udc_disconnect(void);
-#endif
-
/*
* board-specific hardware initialization, called by
* usb drivers and u-boot commands
/* routines */
int usb_init(void); /* initialize the USB Controller */
int usb_stop(void); /* stop the USB Controller */
+int usb_detect_change(void); /* detect if a USB device has been (un)plugged */
int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol);
int usb_set_idle(struct usb_device *dev, int ifnum, int duration,
int report_id);
-struct usb_device *usb_get_dev_index(int index);
int usb_control_msg(struct usb_device *dev, unsigned int pipe,
unsigned char request, unsigned char requesttype,
unsigned short value, unsigned short index,
int usb_clear_halt(struct usb_device *dev, int pipe);
int usb_string(struct usb_device *dev, int index, char *buf, size_t size);
int usb_set_interface(struct usb_device *dev, int interface, int alternate);
+int usb_get_port_status(struct usb_device *dev, int port, void *data);
/* big endian -> little endian conversion */
/* some CPUs are already little endian e.g. the ARM920T */
((usb_pipeendpoint(pipe) * 2) - \
(usb_pipein(pipe) ? 0 : 1))
+/**
+ * struct usb_device_id - identifies USB devices for probing and hotplugging
+ * @match_flags: Bit mask controlling which of the other fields are used to
+ * match against new devices. Any field except for driver_info may be
+ * used, although some only make sense in conjunction with other fields.
+ * This is usually set by a USB_DEVICE_*() macro, which sets all
+ * other fields in this structure except for driver_info.
+ * @idVendor: USB vendor ID for a device; numbers are assigned
+ * by the USB forum to its members.
+ * @idProduct: Vendor-assigned product ID.
+ * @bcdDevice_lo: Low end of range of vendor-assigned product version numbers.
+ * This is also used to identify individual product versions, for
+ * a range consisting of a single device.
+ * @bcdDevice_hi: High end of version number range. The range of product
+ * versions is inclusive.
+ * @bDeviceClass: Class of device; numbers are assigned
+ * by the USB forum. Products may choose to implement classes,
+ * or be vendor-specific. Device classes specify behavior of all
+ * the interfaces on a device.
+ * @bDeviceSubClass: Subclass of device; associated with bDeviceClass.
+ * @bDeviceProtocol: Protocol of device; associated with bDeviceClass.
+ * @bInterfaceClass: Class of interface; numbers are assigned
+ * by the USB forum. Products may choose to implement classes,
+ * or be vendor-specific. Interface classes specify behavior only
+ * of a given interface; other interfaces may support other classes.
+ * @bInterfaceSubClass: Subclass of interface; associated with bInterfaceClass.
+ * @bInterfaceProtocol: Protocol of interface; associated with bInterfaceClass.
+ * @bInterfaceNumber: Number of interface; composite devices may use
+ * fixed interface numbers to differentiate between vendor-specific
+ * interfaces.
+ * @driver_info: Holds information used by the driver. Usually it holds
+ * a pointer to a descriptor understood by the driver, or perhaps
+ * device flags.
+ *
+ * In most cases, drivers will create a table of device IDs by using
+ * USB_DEVICE(), or similar macros designed for that purpose.
+ * They will then export it to userspace using MODULE_DEVICE_TABLE(),
+ * and provide it to the USB core through their usb_driver structure.
+ *
+ * See the usb_match_id() function for information about how matches are
+ * performed. Briefly, you will normally use one of several macros to help
+ * construct these entries. Each entry you provide will either identify
+ * one or more specific products, or will identify a class of products
+ * which have agreed to behave the same. You should put the more specific
+ * matches towards the beginning of your table, so that driver_info can
+ * record quirks of specific products.
+ */
+struct usb_device_id {
+ /* which fields to match against? */
+ u16 match_flags;
+
+ /* Used for product specific matches; range is inclusive */
+ u16 idVendor;
+ u16 idProduct;
+ u16 bcdDevice_lo;
+ u16 bcdDevice_hi;
+
+ /* Used for device class matches */
+ u8 bDeviceClass;
+ u8 bDeviceSubClass;
+ u8 bDeviceProtocol;
+
+ /* Used for interface class matches */
+ u8 bInterfaceClass;
+ u8 bInterfaceSubClass;
+ u8 bInterfaceProtocol;
+
+ /* Used for vendor-specific interface matches */
+ u8 bInterfaceNumber;
+
+ /* not matched against */
+ ulong driver_info;
+};
+
+/* Some useful macros to use to create struct usb_device_id */
+#define USB_DEVICE_ID_MATCH_VENDOR 0x0001
+#define USB_DEVICE_ID_MATCH_PRODUCT 0x0002
+#define USB_DEVICE_ID_MATCH_DEV_LO 0x0004
+#define USB_DEVICE_ID_MATCH_DEV_HI 0x0008
+#define USB_DEVICE_ID_MATCH_DEV_CLASS 0x0010
+#define USB_DEVICE_ID_MATCH_DEV_SUBCLASS 0x0020
+#define USB_DEVICE_ID_MATCH_DEV_PROTOCOL 0x0040
+#define USB_DEVICE_ID_MATCH_INT_CLASS 0x0080
+#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
+#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
+#define USB_DEVICE_ID_MATCH_INT_NUMBER 0x0400
+
+/* Match anything, indicates this is a valid entry even if everything is 0 */
+#define USB_DEVICE_ID_MATCH_NONE 0x0800
+#define USB_DEVICE_ID_MATCH_ALL 0x07ff
+
+/**
+ * struct usb_driver_entry - Matches a driver to its usb_device_ids
+ * @driver: Driver to use
+ * @match: List of match records for this driver, terminated by {}
+ */
+struct usb_driver_entry {
+ struct driver *driver;
+ const struct usb_device_id *match;
+};
+
+#define USB_DEVICE_ID_MATCH_DEVICE \
+ (USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT)
+
+/**
+ * USB_DEVICE - macro used to describe a specific usb device
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific device.
+ */
+#define USB_DEVICE(vend, prod) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
+ .idVendor = (vend), \
+ .idProduct = (prod)
+
+#define U_BOOT_USB_DEVICE(__name, __match) \
+ ll_entry_declare(struct usb_driver_entry, __name, usb_driver_entry) = {\
+ .driver = llsym(struct driver, __name, driver), \
+ .match = __match, \
+ }
+
/*************************************************************************
* Hub Stuff
*/
struct usb_hub_descriptor desc;
};
+#ifdef CONFIG_DM_USB
+/**
+ * struct usb_platdata - Platform data about a USB controller
+ *
+ * Given a USB controller (UCLASS_USB) dev this is dev_get_platdata(dev)
+ */
+struct usb_platdata {
+ enum usb_init_type init_type;
+};
+
+/**
+ * struct usb_dev_platdata - Platform data about a USB device
+ *
+ * Given a USB device dev this structure is dev_get_parent_platdata(dev).
+ * This is used by sandbox to provide emulation data also.
+ *
+ * @id: ID used to match this device
+ * @devnum: Device address on the USB bus
+ * @udev: usb-uclass internal use only do NOT use
+ * @strings: List of descriptor strings (for sandbox emulation purposes)
+ * @desc_list: List of descriptors (for sandbox emulation purposes)
+ */
+struct usb_dev_platdata {
+ struct usb_device_id id;
+ int devnum;
+ /*
+ * This pointer is used to pass the usb_device used in usb_scan_device,
+ * to get the usb descriptors before the driver is known, to the
+ * actual udevice once the driver is known and the udevice is created.
+ * This will be NULL except during probe, do NOT use.
+ *
+ * This should eventually go away.
+ */
+ struct usb_device *udev;
+#ifdef CONFIG_SANDBOX
+ struct usb_string *strings;
+ /* NULL-terminated list of descriptor pointers */
+ struct usb_generic_descriptor **desc_list;
+#endif
+ int configno;
+};
+
+/**
+ * struct usb_bus_priv - information about the USB controller
+ *
+ * Given a USB controller (UCLASS_USB) 'dev', this is
+ * dev_get_uclass_priv(dev).
+ *
+ * @next_addr: Next device address to allocate minus 1. Incremented by 1
+ * each time a new device address is set, so this holds the
+ * number of devices on the bus
+ * @desc_before_addr: true if we can read a device descriptor before it
+ * has been assigned an address. For XHCI this is not possible
+ * so this will be false.
+ * @companion: True if this is a companion controller to another USB
+ * controller
+ */
+struct usb_bus_priv {
+ int next_addr;
+ bool desc_before_addr;
+ bool companion;
+};
+
+/**
+ * struct dm_usb_ops - USB controller operations
+ *
+ * This defines the operations supoorted on a USB controller. Common
+ * arguments are:
+ *
+ * @bus: USB bus (i.e. controller), which is in UCLASS_USB.
+ * @udev: USB device parent data. Controllers are not expected to need
+ * this, since the device address on the bus is encoded in @pipe.
+ * It is used for sandbox, and can be handy for debugging and
+ * logging.
+ * @pipe: An assortment of bitfields which provide address and packet
+ * type information. See create_pipe() above for encoding
+ * details
+ * @buffer: A buffer to use for sending/receiving. This should be
+ * DMA-aligned.
+ * @length: Buffer length in bytes
+ */
+struct dm_usb_ops {
+ /**
+ * control() - Send a control message
+ *
+ * Most parameters are as above.
+ *
+ * @setup: Additional setup information required by the message
+ */
+ int (*control)(struct udevice *bus, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length,
+ struct devrequest *setup);
+ /**
+ * bulk() - Send a bulk message
+ *
+ * Parameters are as above.
+ */
+ int (*bulk)(struct udevice *bus, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length);
+ /**
+ * interrupt() - Send an interrupt message
+ *
+ * Most parameters are as above.
+ *
+ * @interval: Interrupt interval
+ */
+ int (*interrupt)(struct udevice *bus, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length,
+ int interval);
+
+ /**
+ * create_int_queue() - Create and queue interrupt packets
+ *
+ * Create and queue @queuesize number of interrupt usb packets of
+ * @elementsize bytes each. @buffer must be atleast @queuesize *
+ * @elementsize bytes.
+ *
+ * Note some controllers only support a queuesize of 1.
+ *
+ * @interval: Interrupt interval
+ *
+ * @return A pointer to the created interrupt queue or NULL on error
+ */
+ struct int_queue * (*create_int_queue)(struct udevice *bus,
+ struct usb_device *udev, unsigned long pipe,
+ int queuesize, int elementsize, void *buffer,
+ int interval);
+
+ /**
+ * poll_int_queue() - Poll an interrupt queue for completed packets
+ *
+ * Poll an interrupt queue for completed packets. The return value
+ * points to the part of the buffer passed to create_int_queue()
+ * corresponding to the completed packet.
+ *
+ * @queue: queue to poll
+ *
+ * @return Pointer to the data of the first completed packet, or
+ * NULL if no packets are ready
+ */
+ void * (*poll_int_queue)(struct udevice *bus, struct usb_device *udev,
+ struct int_queue *queue);
+
+ /**
+ * destroy_int_queue() - Destroy an interrupt queue
+ *
+ * Destroy an interrupt queue created by create_int_queue().
+ *
+ * @queue: queue to poll
+ *
+ * @return 0 if OK, -ve on error
+ */
+ int (*destroy_int_queue)(struct udevice *bus, struct usb_device *udev,
+ struct int_queue *queue);
+
+ /**
+ * alloc_device() - Allocate a new device context (XHCI)
+ *
+ * Before sending packets to a new device on an XHCI bus, a device
+ * context must be created. If this method is not NULL it will be
+ * called before the device is enumerated (even before its descriptor
+ * is read). This should be NULL for EHCI, which does not need this.
+ */
+ int (*alloc_device)(struct udevice *bus, struct usb_device *udev);
+
+ /**
+ * reset_root_port() - Reset usb root port
+ */
+ int (*reset_root_port)(struct udevice *bus, struct usb_device *udev);
+};
+
+#define usb_get_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)
+#define usb_get_emul_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)
+
+/**
+ * usb_get_dev_index() - look up a device index number
+ *
+ * Look up devices using their index number (starting at 0). This works since
+ * in U-Boot device addresses are allocated starting at 1 with no gaps.
+ *
+ * TODO(sjg@chromium.org): Remove this function when usb_ether.c is modified
+ * to work better with driver model.
+ *
+ * @bus: USB bus to check
+ * @index: Index number of device to find (0=first). This is just the
+ * device address less 1.
+ */
+struct usb_device *usb_get_dev_index(struct udevice *bus, int index);
+
+/**
+ * usb_setup_device() - set up a device ready for use
+ *
+ * @dev: USB device pointer. This need not be a real device - it is
+ * common for it to just be a local variable with its ->dev
+ * member (i.e. @dev->dev) set to the parent device and
+ * dev->portnr set to the port number on the hub (1=first)
+ * @do_read: true to read the device descriptor before an address is set
+ * (should be false for XHCI buses, true otherwise)
+ * @parent: Parent device (either UCLASS_USB or UCLASS_USB_HUB)
+ * @return 0 if OK, -ve on error */
+int usb_setup_device(struct usb_device *dev, bool do_read,
+ struct usb_device *parent);
+
+/**
+ * usb_hub_scan() - Scan a hub and find its devices
+ *
+ * @hub: Hub device to scan
+ */
+int usb_hub_scan(struct udevice *hub);
+
+/**
+ * usb_scan_device() - Scan a device on a bus
+ *
+ * Scan a device on a bus. It has already been detected and is ready to
+ * be enumerated. This may be either the root hub (@parent is a bus) or a
+ * normal device (@parent is a hub)
+ *
+ * @parent: Parent device
+ * @port: Hub port number (numbered from 1)
+ * @speed: USB speed to use for this device
+ * @devp: Returns pointer to device if all is well
+ * @return 0 if OK, -ve on error
+ */
+int usb_scan_device(struct udevice *parent, int port,
+ enum usb_device_speed speed, struct udevice **devp);
+
+/**
+ * usb_get_bus() - Find the bus for a device
+ *
+ * Search up through parents to find the bus this device is connected to. This
+ * will be a device with uclass UCLASS_USB.
+ *
+ * @dev: Device to check
+ * @return The bus, or NULL if not found (this indicates a critical error in
+ * the USB stack
+ */
+struct udevice *usb_get_bus(struct udevice *dev);
+
+/**
+ * usb_select_config() - Set up a device ready for use
+ *
+ * This function assumes that the device already has an address and a driver
+ * bound, and is ready to be set up.
+ *
+ * This re-reads the device and configuration descriptors and sets the
+ * configuration
+ *
+ * @dev: Device to set up
+ */
+int usb_select_config(struct usb_device *dev);
+
+/**
+ * usb_child_pre_probe() - Pre-probe function for USB devices
+ *
+ * This is called on all children of hubs and USB controllers (i.e. UCLASS_USB
+ * and UCLASS_USB_HUB) when a new device is about to be probed. It sets up the
+ * device from the saved platform data and calls usb_select_config() to
+ * finish set up.
+ *
+ * Once this is done, the device's normal driver can take over, knowing the
+ * device is accessible on the USB bus.
+ *
+ * This function is for use only by the internal USB stack.
+ *
+ * @dev: Device to set up
+ */
+int usb_child_pre_probe(struct udevice *dev);
+
+struct ehci_ctrl;
+
+/**
+ * usb_setup_ehci_gadget() - Set up a USB device as a gadget
+ *
+ * TODO(sjg@chromium.org): Tidy this up when USB gadgets can use driver model
+ *
+ * This provides a way to tell a controller to start up as a USB device
+ * instead of as a host. It is untested.
+ */
+int usb_setup_ehci_gadget(struct ehci_ctrl **ctlrp);
+
+/**
+ * usb_stor_reset() - Prepare to scan USB storage devices
+ *
+ * Empty the list of USB storage devices in preparation for scanning them.
+ * This must be called before a USB scan.
+ */
+void usb_stor_reset(void);
+
+#else /* !CONFIG_DM_USB */
+
+struct usb_device *usb_get_dev_index(int index);
+
+#endif
+
+bool usb_device_has_child_on_port(struct usb_device *parent, int port);
+
int usb_hub_probe(struct usb_device *dev, int ifnum);
void usb_hub_reset(void);
-int hub_port_reset(struct usb_device *dev, int port,
+
+/**
+ * legacy_hub_port_reset() - reset a port given its usb_device pointer
+ *
+ * Reset a hub port and see if a device is present on that port, providing
+ * sufficient time for it to show itself. The port status is returned.
+ *
+ * With driver model this moves to hub_port_reset() and is passed a struct
+ * udevice.
+ *
+ * @dev: USB device to reset
+ * @port: Port number to reset (note ports are numbered from 0 here)
+ * @portstat: Returns port status
+ */
+int legacy_hub_port_reset(struct usb_device *dev, int port,
unsigned short *portstat);
-struct usb_device *usb_alloc_new_device(void *controller);
+int hub_port_reset(struct udevice *dev, int port, unsigned short *portstat);
+
+/**
+ * usb_alloc_new_device() - Allocate a new device
+ *
+ * @devp: returns a pointer of a new device structure. With driver model this
+ * is a device pointer, but with legacy USB this pointer is
+ * driver-specific.
+ * @return 0 if OK, -ENOSPC if we have found out of room for new devices
+ */
+int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp);
+
+/**
+ * usb_free_device() - Free a partially-inited device
+ *
+ * This is an internal function. It is used to reverse the action of
+ * usb_alloc_new_device() when we hit a problem during init.
+ */
+void usb_free_device(struct udevice *controller);
int usb_new_device(struct usb_device *dev);
-void usb_free_device(void);
+
int usb_alloc_device(struct usb_device *dev);
+/**
+ * usb_emul_setup_device() - Set up a new USB device emulation
+ *
+ * This is normally called when a new emulation device is bound. It tells
+ * the USB emulation uclass about the features of the emulator.
+ *
+ * @dev: Emulation device
+ * @maxpacketsize: Maximum packet size (e.g. PACKET_SIZE_64)
+ * @strings: List of USB string descriptors, terminated by a NULL
+ * entry
+ * @desc_list: List of points or USB descriptors, terminated by NULL.
+ * The first entry must be struct usb_device_descriptor,
+ * and others follow on after that.
+ * @return 0 if OK, -ve on error
+ */
+int usb_emul_setup_device(struct udevice *dev, int maxpacketsize,
+ struct usb_string *strings, void **desc_list);
+
+/**
+ * usb_emul_control() - Send a control packet to an emulator
+ *
+ * @emul: Emulator device
+ * @udev: USB device (which the emulator is causing to appear)
+ * See struct dm_usb_ops for details on other parameters
+ * @return 0 if OK, -ve on error
+ */
+int usb_emul_control(struct udevice *emul, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length,
+ struct devrequest *setup);
+
+/**
+ * usb_emul_bulk() - Send a bulk packet to an emulator
+ *
+ * @emul: Emulator device
+ * @udev: USB device (which the emulator is causing to appear)
+ * See struct dm_usb_ops for details on other parameters
+ * @return 0 if OK, -ve on error
+ */
+int usb_emul_bulk(struct udevice *emul, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length);
+
+/**
+ * usb_emul_find() - Find an emulator for a particular device
+ *
+ * Check @pipe to find a device number on bus @bus and return it.
+ *
+ * @bus: USB bus (controller)
+ * @pipe: Describes pipe being used, and includes the device number
+ * @emulp: Returns pointer to emulator, or NULL if not found
+ * @return 0 if found, -ve on error
+ */
+int usb_emul_find(struct udevice *bus, ulong pipe, struct udevice **emulp);
+
+/**
+ * usb_emul_reset() - Reset all emulators ready for use
+ *
+ * Clear out any address information in the emulators and make then ready for
+ * a new USB scan
+ */
+void usb_emul_reset(struct udevice *dev);
+
#endif /*_USB_H_ */
projects / karo-tx-uboot.git / blobdiff