| /* |
| * (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> |
| #include <part.h> |
| |
| /* |
| * The EHCI spec says that we must align to at least 32 bytes. However, |
| * some platforms require larger alignment. |
| */ |
| #if ARCH_DMA_MINALIGN > 32 |
| #define USB_DMA_MINALIGN ARCH_DMA_MINALIGN |
| #else |
| #define USB_DMA_MINALIGN 32 |
| #endif |
| |
| /* Everything is aribtrary */ |
| #define USB_ALTSETTINGALLOC 4 |
| #define USB_MAXALTSETTING 128 /* Hard limit */ |
| |
| #define USB_MAX_DEVICE 32 |
| #define USB_MAXCONFIG 8 |
| #define USB_MAXINTERFACES 8 |
| #define USB_MAXENDPOINTS 16 |
| #define USB_MAXCHILDREN 8 /* This is arbitrary */ |
| #define USB_MAX_HUB 16 |
| |
| #define USB_CNTL_TIMEOUT 100 /* 100ms timeout */ |
| |
| /* |
| * This is the timeout to allow for submitting an urb in ms. We allow more |
| * time for a BULK device to react - some are slow. |
| */ |
| #define USB_TIMEOUT_MS(pipe) (usb_pipebulk(pipe) ? 5000 : 1000) |
| |
| /* device request (setup) */ |
| struct devrequest { |
| __u8 requesttype; |
| __u8 request; |
| __le16 value; |
| __le16 index; |
| __le16 length; |
| } __attribute__ ((packed)); |
| |
| /* Interface */ |
| struct usb_interface { |
| struct usb_interface_descriptor desc; |
| |
| __u8 no_of_ep; |
| __u8 num_altsetting; |
| __u8 act_altsetting; |
| |
| struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS]; |
| /* |
| * Super Speed Device will have Super Speed Endpoint |
| * Companion Descriptor (section 9.6.7 of usb 3.0 spec) |
| * Revision 1.0 June 6th 2011 |
| */ |
| struct usb_ss_ep_comp_descriptor ss_ep_comp_desc[USB_MAXENDPOINTS]; |
| } __attribute__ ((packed)); |
| |
| /* Configuration information.. */ |
| struct usb_config { |
| struct usb_config_descriptor desc; |
| |
| __u8 no_of_if; /* number of interfaces */ |
| struct usb_interface if_desc[USB_MAXINTERFACES]; |
| } __attribute__ ((packed)); |
| |
| enum { |
| /* Maximum packet size; encoded as 0,1,2,3 = 8,16,32,64 */ |
| PACKET_SIZE_8 = 0, |
| PACKET_SIZE_16 = 1, |
| PACKET_SIZE_32 = 2, |
| 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 */ |
| char mf[32]; /* manufacturer */ |
| char prod[32]; /* product */ |
| char serial[32]; /* serial number */ |
| |
| /* Maximum packet size; one of: PACKET_SIZE_* */ |
| int maxpacketsize; |
| /* one bit for each endpoint ([0] = IN, [1] = OUT) */ |
| unsigned int toggle[2]; |
| /* endpoint halts; one bit per endpoint # & direction; |
| * [0] = IN, [1] = OUT |
| */ |
| unsigned int halted[2]; |
| int epmaxpacketin[16]; /* INput endpoint specific maximums */ |
| int epmaxpacketout[16]; /* OUTput endpoint specific maximums */ |
| |
| int configno; /* selected config number */ |
| /* Device Descriptor */ |
| struct usb_device_descriptor descriptor |
| __attribute__((aligned(ARCH_DMA_MINALIGN))); |
| struct usb_config config; /* config descriptor */ |
| |
| int have_langid; /* whether string_langid is valid yet */ |
| int string_langid; /* language ID for strings */ |
| int (*irq_handle)(struct usb_device *dev); |
| unsigned long irq_status; |
| int irq_act_len; /* transfered bytes */ |
| void *privptr; |
| /* |
| * Child devices - if this is a hub device |
| * 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; /* 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; |
| |
| /* |
| * You can initialize platform's USB host or device |
| * ports by passing this enum as an argument to |
| * board_usb_init(). |
| */ |
| enum usb_init_type { |
| USB_INIT_HOST, |
| USB_INIT_DEVICE |
| }; |
| |
| /********************************************************************** |
| * 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_MUSB_SUNXI) || \ |
| 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_MUSB_HOST) || defined(CONFIG_DM_USB) |
| int usb_reset_root_port(void); |
| #else |
| #define usb_reset_root_port() |
| #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 transfer_len, struct devrequest *setup); |
| int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, |
| int transfer_len, int interval); |
| |
| #if defined CONFIG_USB_EHCI || defined CONFIG_MUSB_HOST |
| struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe, |
| 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 |
| |
| /* Defines */ |
| #define USB_UHCI_VEND_ID 0x8086 |
| #define USB_UHCI_DEV_ID 0x7112 |
| |
| /* |
| * PXA25x can only act as USB device. There are drivers |
| * which works with USB CDC gadgets implementations. |
| * Some of them have common routines which can be used |
| * 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 |
| * |
| * @param index USB controller number |
| * @param init initializes controller as USB host or device |
| */ |
| int board_usb_init(int index, enum usb_init_type init); |
| |
| /* |
| * can be used to clean up after failed USB initialization attempt |
| * vide: board_usb_init() |
| * |
| * @param index USB controller number for selective cleanup |
| * @param init usb_init_type passed to board_usb_init() |
| */ |
| int board_usb_cleanup(int index, enum usb_init_type init); |
| |
| #ifdef CONFIG_USB_STORAGE |
| |
| #define USB_MAX_STOR_DEV 5 |
| block_dev_desc_t *usb_stor_get_dev(int index); |
| int usb_stor_scan(int mode); |
| int usb_stor_info(void); |
| |
| #endif |
| |
| #ifdef CONFIG_USB_HOST_ETHER |
| |
| #define USB_MAX_ETH_DEV 5 |
| int usb_host_eth_scan(int mode); |
| |
| #endif |
| |
| #ifdef CONFIG_USB_KEYBOARD |
| |
| int drv_usb_kbd_init(void); |
| int usb_kbd_deregister(int force); |
| |
| #endif |
| /* routines */ |
| int usb_init(void); /* initialize the USB Controller */ |
| int usb_stop(void); /* stop the USB Controller */ |
| |
| |
| 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); |
| int usb_control_msg(struct usb_device *dev, unsigned int pipe, |
| unsigned char request, unsigned char requesttype, |
| unsigned short value, unsigned short index, |
| void *data, unsigned short size, int timeout); |
| int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, |
| void *data, int len, int *actual_length, int timeout); |
| int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, |
| void *buffer, int transfer_len, int interval); |
| int usb_disable_asynch(int disable); |
| int usb_maxpacket(struct usb_device *dev, unsigned long pipe); |
| int usb_get_configuration_no(struct usb_device *dev, unsigned char *buffer, |
| int cfgno); |
| int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, |
| unsigned char id, void *buf, int size); |
| int usb_get_class_descriptor(struct usb_device *dev, int ifnum, |
| unsigned char type, unsigned char id, void *buf, |
| int size); |
| 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); |
| |
| /* big endian -> little endian conversion */ |
| /* some CPUs are already little endian e.g. the ARM920T */ |
| #define __swap_16(x) \ |
| ({ unsigned short x_ = (unsigned short)x; \ |
| (unsigned short)( \ |
| ((x_ & 0x00FFU) << 8) | ((x_ & 0xFF00U) >> 8)); \ |
| }) |
| #define __swap_32(x) \ |
| ({ unsigned long x_ = (unsigned long)x; \ |
| (unsigned long)( \ |
| ((x_ & 0x000000FFUL) << 24) | \ |
| ((x_ & 0x0000FF00UL) << 8) | \ |
| ((x_ & 0x00FF0000UL) >> 8) | \ |
| ((x_ & 0xFF000000UL) >> 24)); \ |
| }) |
| |
| #ifdef __LITTLE_ENDIAN |
| # define swap_16(x) (x) |
| # define swap_32(x) (x) |
| #else |
| # define swap_16(x) __swap_16(x) |
| # define swap_32(x) __swap_32(x) |
| #endif |
| |
| /* |
| * Calling this entity a "pipe" is glorifying it. A USB pipe |
| * is something embarrassingly simple: it basically consists |
| * of the following information: |
| * - device number (7 bits) |
| * - endpoint number (4 bits) |
| * - current Data0/1 state (1 bit) |
| * - direction (1 bit) |
| * - speed (2 bits) |
| * - max packet size (2 bits: 8, 16, 32 or 64) |
| * - pipe type (2 bits: control, interrupt, bulk, isochronous) |
| * |
| * That's 18 bits. Really. Nothing more. And the USB people have |
| * documented these eighteen bits as some kind of glorious |
| * virtual data structure. |
| * |
| * Let's not fall in that trap. We'll just encode it as a simple |
| * unsigned int. The encoding is: |
| * |
| * - max size: bits 0-1 (00 = 8, 01 = 16, 10 = 32, 11 = 64) |
| * - direction: bit 7 (0 = Host-to-Device [Out], |
| * (1 = Device-to-Host [In]) |
| * - device: bits 8-14 |
| * - endpoint: bits 15-18 |
| * - Data0/1: bit 19 |
| * - pipe type: bits 30-31 (00 = isochronous, 01 = interrupt, |
| * 10 = control, 11 = bulk) |
| * |
| * Why? Because it's arbitrary, and whatever encoding we select is really |
| * up to us. This one happens to share a lot of bit positions with the UHCI |
| * specification, so that much of the uhci driver can just mask the bits |
| * appropriately. |
| */ |
| /* Create various pipes... */ |
| #define create_pipe(dev,endpoint) \ |
| (((dev)->devnum << 8) | ((endpoint) << 15) | \ |
| (dev)->maxpacketsize) |
| #define default_pipe(dev) ((dev)->speed << 26) |
| |
| #define usb_sndctrlpipe(dev, endpoint) ((PIPE_CONTROL << 30) | \ |
| create_pipe(dev, endpoint)) |
| #define usb_rcvctrlpipe(dev, endpoint) ((PIPE_CONTROL << 30) | \ |
| create_pipe(dev, endpoint) | \ |
| USB_DIR_IN) |
| #define usb_sndisocpipe(dev, endpoint) ((PIPE_ISOCHRONOUS << 30) | \ |
| create_pipe(dev, endpoint)) |
| #define usb_rcvisocpipe(dev, endpoint) ((PIPE_ISOCHRONOUS << 30) | \ |
| create_pipe(dev, endpoint) | \ |
| USB_DIR_IN) |
| #define usb_sndbulkpipe(dev, endpoint) ((PIPE_BULK << 30) | \ |
| create_pipe(dev, endpoint)) |
| #define usb_rcvbulkpipe(dev, endpoint) ((PIPE_BULK << 30) | \ |
| create_pipe(dev, endpoint) | \ |
| USB_DIR_IN) |
| #define usb_sndintpipe(dev, endpoint) ((PIPE_INTERRUPT << 30) | \ |
| create_pipe(dev, endpoint)) |
| #define usb_rcvintpipe(dev, endpoint) ((PIPE_INTERRUPT << 30) | \ |
| create_pipe(dev, endpoint) | \ |
| USB_DIR_IN) |
| #define usb_snddefctrl(dev) ((PIPE_CONTROL << 30) | \ |
| default_pipe(dev)) |
| #define usb_rcvdefctrl(dev) ((PIPE_CONTROL << 30) | \ |
| default_pipe(dev) | \ |
| USB_DIR_IN) |
| |
| /* The D0/D1 toggle bits */ |
| #define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> ep) & 1) |
| #define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << ep)) |
| #define usb_settoggle(dev, ep, out, bit) ((dev)->toggle[out] = \ |
| ((dev)->toggle[out] & \ |
| ~(1 << ep)) | ((bit) << ep)) |
| |
| /* Endpoint halt control/status */ |
| #define usb_endpoint_out(ep_dir) (((ep_dir >> 7) & 1) ^ 1) |
| #define usb_endpoint_halt(dev, ep, out) ((dev)->halted[out] |= (1 << (ep))) |
| #define usb_endpoint_running(dev, ep, out) ((dev)->halted[out] &= ~(1 << (ep))) |
| #define usb_endpoint_halted(dev, ep, out) ((dev)->halted[out] & (1 << (ep))) |
| |
| #define usb_packetid(pipe) (((pipe) & USB_DIR_IN) ? USB_PID_IN : \ |
| USB_PID_OUT) |
| |
| #define usb_pipeout(pipe) ((((pipe) >> 7) & 1) ^ 1) |
| #define usb_pipein(pipe) (((pipe) >> 7) & 1) |
| #define usb_pipedevice(pipe) (((pipe) >> 8) & 0x7f) |
| #define usb_pipe_endpdev(pipe) (((pipe) >> 8) & 0x7ff) |
| #define usb_pipeendpoint(pipe) (((pipe) >> 15) & 0xf) |
| #define usb_pipedata(pipe) (((pipe) >> 19) & 1) |
| #define usb_pipetype(pipe) (((pipe) >> 30) & 3) |
| #define usb_pipeisoc(pipe) (usb_pipetype((pipe)) == PIPE_ISOCHRONOUS) |
| #define usb_pipeint(pipe) (usb_pipetype((pipe)) == PIPE_INTERRUPT) |
| #define usb_pipecontrol(pipe) (usb_pipetype((pipe)) == PIPE_CONTROL) |
| #define usb_pipebulk(pipe) (usb_pipetype((pipe)) == PIPE_BULK) |
| |
| #define usb_pipe_ep_index(pipe) \ |
| usb_pipecontrol(pipe) ? (usb_pipeendpoint(pipe) * 2) : \ |
| ((usb_pipeendpoint(pipe) * 2) - \ |
| (usb_pipein(pipe) ? 0 : 1)) |
| |
| /************************************************************************* |
| * Hub Stuff |
| */ |
| struct usb_port_status { |
| unsigned short wPortStatus; |
| unsigned short wPortChange; |
| } __attribute__ ((packed)); |
| |
| struct usb_hub_status { |
| unsigned short wHubStatus; |
| unsigned short wHubChange; |
| } __attribute__ ((packed)); |
| |
| |
| /* Hub descriptor */ |
| struct usb_hub_descriptor { |
| unsigned char bLength; |
| unsigned char bDescriptorType; |
| unsigned char bNbrPorts; |
| unsigned short wHubCharacteristics; |
| unsigned char bPwrOn2PwrGood; |
| unsigned char bHubContrCurrent; |
| unsigned char DeviceRemovable[(USB_MAXCHILDREN+1+7)/8]; |
| unsigned char PortPowerCtrlMask[(USB_MAXCHILDREN+1+7)/8]; |
| /* DeviceRemovable and PortPwrCtrlMask want to be variable-length |
| bitmaps that hold max 255 entries. (bit0 is ignored) */ |
| } __attribute__ ((packed)); |
| |
| |
| struct usb_hub_device { |
| struct usb_device *pusb_dev; |
| 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 |
| * @speed: Stores the speed associated with a USB device |
| * @devnum: Device address on the USB bus |
| * @slot_id: USB3 slot ID, which is separate from the device address |
| * @portnr: Port number of this device on its parent hub, numbered from 1 |
| * (0 mean this device is the root hub) |
| * @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; |
| enum usb_device_speed speed; |
| int devnum; |
| int slot_id; |
| int portnr; /* Hub port number, 1..n */ |
| #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. |
| */ |
| struct usb_bus_priv { |
| int next_addr; |
| bool desc_before_addr; |
| }; |
| |
| /** |
| * 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); |
| /** |
| * 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); |
| }; |
| |
| #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) |
| |
| #ifdef CONFIG_MUSB_HOST |
| int usb_reset_root_port(void); |
| #endif |
| |
| /** |
| * 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_legacy_port_reset() - Legacy function to reset a hub port |
| * |
| * @hub: Hub device |
| * @portnr: Port number (1=first) |
| */ |
| int usb_legacy_port_reset(struct usb_device *hub, int portnr); |
| |
| /** |
| * 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 |
| * @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) |
| * @portnr: Port number on hub (1=first) or 0 for none |
| * @return 0 if OK, -ve on error */ |
| int usb_setup_device(struct usb_device *dev, bool do_read, |
| struct usb_device *parent, int portnr); |
| |
| /** |
| * 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 |
| * @busp: Returns bus, or NULL if not found |
| * @return 0 if OK, -EXDEV is somehow this bus does not have a controller (this |
| * indicates a critical error in the USB stack |
| */ |
| int usb_get_bus(struct udevice *dev, struct udevice **busp); |
| |
| /** |
| * 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, |
| 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); |
| |
| int usb_alloc_device(struct usb_device *dev); |
| |
| #endif /*_USB_H_ */ |