diff options
| -rw-r--r-- | drivers/usb/gadget/printer.c | 447 |
1 files changed, 97 insertions, 350 deletions
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c index daef2741f452..f1f9290a2f47 100644 --- a/drivers/usb/gadget/printer.c +++ b/drivers/usb/gadget/printer.c @@ -51,6 +51,7 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ +#include "composite.c" #include "usbstring.c" #include "config.c" #include "epautoconf.c" @@ -75,8 +76,6 @@ struct printer_dev { /* lock buffer lists during read/write calls */ struct mutex lock_printer_io; struct usb_gadget *gadget; - struct usb_request *req; /* for control responses */ - u8 config; s8 interface; struct usb_ep *in_ep, *out_ep; @@ -100,6 +99,7 @@ struct printer_dev { struct device *pdev; u8 printer_cdev_open; wait_queue_head_t wait; + struct usb_function function; }; static struct printer_dev usb_printer_gadget; @@ -120,26 +120,6 @@ static struct printer_dev usb_printer_gadget; * parameters are in UTF-8 (superset of ASCII's 7 bit characters). */ -static ushort idVendor; -module_param(idVendor, ushort, S_IRUGO); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort idProduct; -module_param(idProduct, ushort, S_IRUGO); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort bcdDevice; -module_param(bcdDevice, ushort, S_IRUGO); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - -static char *iManufacturer; -module_param(iManufacturer, charp, S_IRUGO); -MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); - -static char *iProduct; -module_param(iProduct, charp, S_IRUGO); -MODULE_PARM_DESC(iProduct, "USB Product string"); - static char *iSerialNum; module_param(iSerialNum, charp, S_IRUGO); MODULE_PARM_DESC(iSerialNum, "1"); @@ -156,39 +136,6 @@ module_param(qlen, uint, S_IRUGO|S_IWUSR); /*-------------------------------------------------------------------------*/ -#define xprintk(d, level, fmt, args...) \ - printk(level "%s: " fmt, DRIVER_DESC, ## args) - -#ifdef DEBUG -#define DBG(dev, fmt, args...) \ - xprintk(dev, KERN_DEBUG, fmt, ## args) -#else -#define DBG(dev, fmt, args...) \ - do { } while (0) -#endif /* DEBUG */ - -#ifdef VERBOSE -#define VDBG(dev, fmt, args...) \ - xprintk(dev, KERN_DEBUG, fmt, ## args) -#else -#define VDBG(dev, fmt, args...) \ - do { } while (0) -#endif /* VERBOSE */ - -#define ERROR(dev, fmt, args...) \ - xprintk(dev, KERN_ERR, fmt, ## args) -#define WARNING(dev, fmt, args...) \ - xprintk(dev, KERN_WARNING, fmt, ## args) -#define INFO(dev, fmt, args...) \ - xprintk(dev, KERN_INFO, fmt, ## args) - -/*-------------------------------------------------------------------------*/ - -/* USB DRIVER HOOKUP (to the hardware driver, below us), mostly - * ep0 implementation: descriptors, config management, setup(). - * also optional class-specific notification interrupt transfer. - */ - /* * DESCRIPTORS ... most are static, but strings and (full) configuration * descriptors are built on demand. @@ -221,24 +168,6 @@ static struct usb_device_descriptor device_desc = { .bNumConfigurations = 1 }; -static struct usb_otg_descriptor otg_desc = { - .bLength = sizeof otg_desc, - .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP -}; - -static struct usb_config_descriptor config_desc = { - .bLength = sizeof config_desc, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 1, - .bConfigurationValue = DEV_CONFIG_VALUE, - .iConfiguration = 0, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, -}; - static struct usb_interface_descriptor intf_desc = { .bLength = sizeof intf_desc, .bDescriptorType = USB_DT_INTERFACE, @@ -264,8 +193,7 @@ static struct usb_endpoint_descriptor fs_ep_out_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK }; -static const struct usb_descriptor_header *fs_printer_function [11] = { - (struct usb_descriptor_header *) &otg_desc, +static struct usb_descriptor_header *fs_printer_function[] = { (struct usb_descriptor_header *) &intf_desc, (struct usb_descriptor_header *) &fs_ep_in_desc, (struct usb_descriptor_header *) &fs_ep_out_desc, @@ -299,14 +227,24 @@ static struct usb_qualifier_descriptor dev_qualifier = { .bNumConfigurations = 1 }; -static const struct usb_descriptor_header *hs_printer_function [11] = { - (struct usb_descriptor_header *) &otg_desc, +static struct usb_descriptor_header *hs_printer_function[] = { (struct usb_descriptor_header *) &intf_desc, (struct usb_descriptor_header *) &hs_ep_in_desc, (struct usb_descriptor_header *) &hs_ep_out_desc, NULL }; +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + .bmAttributes = USB_OTG_SRP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + /* maxpacket and other transfer characteristics vary by speed. */ #define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs)) @@ -328,11 +266,16 @@ static struct usb_string strings [] = { { } /* end of list */ }; -static struct usb_gadget_strings stringtab = { +static struct usb_gadget_strings stringtab_dev = { .language = 0x0409, /* en-us */ .strings = strings, }; +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + /*-------------------------------------------------------------------------*/ static struct usb_request * @@ -922,78 +865,8 @@ static void printer_reset_interface(struct printer_dev *dev) dev->interface = -1; } -/* change our operational config. must agree with the code - * that returns config descriptors, and altsetting code. - */ -static int -printer_set_config(struct printer_dev *dev, unsigned number) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - - switch (number) { - case DEV_CONFIG_VALUE: - result = 0; - break; - default: - result = -EINVAL; - /* FALL THROUGH */ - case 0: - break; - } - - if (result) { - usb_gadget_vbus_draw(dev->gadget, - dev->gadget->is_otg ? 8 : 100); - } else { - unsigned power; - - power = 2 * config_desc.bMaxPower; - usb_gadget_vbus_draw(dev->gadget, power); - - dev->config = number; - INFO(dev, "%s config #%d: %d mA, %s\n", - usb_speed_string(gadget->speed), - number, power, driver_desc); - } - return result; -} - -static int -config_buf(enum usb_device_speed speed, u8 *buf, u8 type, unsigned index, - int is_otg) -{ - int len; - const struct usb_descriptor_header **function; - int hs = (speed == USB_SPEED_HIGH); - - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; - - if (hs) { - function = hs_printer_function; - } else { - function = fs_printer_function; - } - - if (index >= device_desc.bNumConfigurations) - return -EINVAL; - - /* for now, don't advertise srp-only devices */ - if (!is_otg) - function++; - - len = usb_gadget_config_buf(&config_desc, buf, USB_DESC_BUFSIZE, - function); - if (len < 0) - return len; - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} - /* Change our operational Interface. */ -static int -set_interface(struct printer_dev *dev, unsigned number) +static int set_interface(struct printer_dev *dev, unsigned number) { int result = 0; @@ -1024,14 +897,6 @@ set_interface(struct printer_dev *dev, unsigned number) return result; } -static void printer_setup_complete(struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DBG((struct printer_dev *) ep->driver_data, - "setup complete --> %d, %d/%d\n", - req->status, req->actual, req->length); -} - static void printer_soft_reset(struct printer_dev *dev) { struct usb_request *req; @@ -1088,11 +953,12 @@ static void printer_soft_reset(struct printer_dev *dev) * The setup() callback implements all the ep0 functionality that's not * handled lower down. */ -static int -printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) +static int printer_func_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) { - struct printer_dev *dev = get_gadget_data(gadget); - struct usb_request *req = dev->req; + struct printer_dev *dev = container_of(f, struct printer_dev, function); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; int value = -EOPNOTSUPP; u16 wIndex = le16_to_cpu(ctrl->wIndex); u16 wValue = le16_to_cpu(ctrl->wValue); @@ -1101,100 +967,7 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) DBG(dev, "ctrl req%02x.%02x v%04x i%04x l%d\n", ctrl->bRequestType, ctrl->bRequest, wValue, wIndex, wLength); - req->complete = printer_setup_complete; - switch (ctrl->bRequestType&USB_TYPE_MASK) { - - case USB_TYPE_STANDARD: - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - break; - switch (wValue >> 8) { - - case USB_DT_DEVICE: - device_desc.bMaxPacketSize0 = - gadget->ep0->maxpacket; - value = min(wLength, (u16) sizeof device_desc); - memcpy(req->buf, &device_desc, value); - break; - case USB_DT_DEVICE_QUALIFIER: - if (!gadget_is_dualspeed(gadget)) - break; - /* - * assumes ep0 uses the same value for both - * speeds - */ - dev_qualifier.bMaxPacketSize0 = - gadget->ep0->maxpacket; - value = min(wLength, - (u16) sizeof dev_qualifier); - memcpy(req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget_is_dualspeed(gadget)) - break; - /* FALLTHROUGH */ - case USB_DT_CONFIG: - value = config_buf(gadget->speed, req->buf, - wValue >> 8, - wValue & 0xff, - gadget->is_otg); - if (value >= 0) - value = min(wLength, (u16) value); - break; - - case USB_DT_STRING: - value = usb_gadget_get_string(&stringtab, - wValue & 0xff, req->buf); - if (value >= 0) - value = min(wLength, (u16) value); - break; - } - break; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - break; - if (gadget->a_hnp_support) - DBG(dev, "HNP available\n"); - else if (gadget->a_alt_hnp_support) - DBG(dev, "HNP needs a different root port\n"); - value = printer_set_config(dev, wValue); - if (!value) - value = set_interface(dev, PRINTER_INTERFACE); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->config; - value = min(wLength, (u16) 1); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE || - !dev->config) - break; - - value = set_interface(dev, PRINTER_INTERFACE); - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != - (USB_DIR_IN|USB_RECIP_INTERFACE) - || !dev->config) - break; - - *(u8 *)req->buf = dev->interface; - value = min(wLength, (u16) 1); - break; - - default: - goto unknown; - } - break; - case USB_TYPE_CLASS: switch (ctrl->bRequest) { case 0: /* Get the IEEE-1284 PNP String */ @@ -1240,44 +1013,50 @@ unknown: wValue, wIndex, wLength); break; } - - /* respond with data transfer before status phase? */ - if (value >= 0) { - req->length = value; - req->zero = value < wLength; - value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); - if (value < 0) { - DBG(dev, "ep_queue --> %d\n", value); - req->status = 0; - printer_setup_complete(gadget->ep0, req); - } - } - /* host either stalls (value < 0) or reports success */ return value; } -static void -printer_disconnect(struct usb_gadget *gadget) +static int __init printer_func_bind(struct usb_configuration *c, + struct usb_function *f) +{ + return 0; +} + +static void printer_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ +} + +static int printer_func_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) { - struct printer_dev *dev = get_gadget_data(gadget); + struct printer_dev *dev = container_of(f, struct printer_dev, function); + int ret = -ENOTSUPP; + + if (!alt) + ret = set_interface(dev, PRINTER_INTERFACE); + return ret; +} + +static void printer_func_disable(struct usb_function *f) +{ + struct printer_dev *dev = container_of(f, struct printer_dev, function); unsigned long flags; DBG(dev, "%s\n", __func__); spin_lock_irqsave(&dev->lock, flags); - printer_reset_interface(dev); - spin_unlock_irqrestore(&dev->lock, flags); } -static void -printer_unbind(struct usb_gadget *gadget) +static void printer_cfg_unbind(struct usb_configuration *c) { - struct printer_dev *dev = get_gadget_data(gadget); + struct printer_dev *dev; struct usb_request *req; + dev = &usb_printer_gadget; DBG(dev, "%s\n", __func__); @@ -1315,18 +1094,18 @@ printer_unbind(struct usb_gadget *gadget) list_del(&req->list); printer_req_free(dev->out_ep, req); } - - if (dev->req) { - printer_req_free(gadget->ep0, dev->req); - dev->req = NULL; - } - - set_gadget_data(gadget, NULL); } -static int __init -printer_bind(struct usb_gadget *gadget) +static struct usb_configuration printer_cfg_driver = { + .label = "printer", + .unbind = printer_cfg_unbind, + .bConfigurationValue = 1, + .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, +}; + +static int __init printer_bind_config(struct usb_configuration *c) { + struct usb_gadget *gadget = c->cdev->gadget; struct printer_dev *dev; struct usb_ep *in_ep, *out_ep; int status = -ENOMEM; @@ -1337,6 +1116,14 @@ printer_bind(struct usb_gadget *gadget) dev = &usb_printer_gadget; + dev->function.name = shortname; + dev->function.descriptors = fs_printer_function; + dev->function.hs_descriptors = hs_printer_function; + dev->function.bind = printer_func_bind; + dev->function.setup = printer_func_setup; + dev->function.unbind = printer_func_unbind; + dev->function.set_alt = printer_func_set_alt; + dev->function.disable = printer_func_disable; /* Setup the sysfs files for the printer gadget. */ dev->pdev = device_create(usb_gadget_class, NULL, g_printer_devno, @@ -1372,29 +1159,6 @@ printer_bind(struct usb_gadget *gadget) init_utsname()->sysname, init_utsname()->release, gadget->name); - device_desc.idVendor = - cpu_to_le16(PRINTER_VENDOR_NUM); - device_desc.idProduct = - cpu_to_le16(PRINTER_PRODUCT_NUM); - - /* support optional vendor/distro customization */ - if (idVendor) { - if (!idProduct) { - dev_err(&gadget->dev, "idVendor needs idProduct!\n"); - return -ENODEV; - } - device_desc.idVendor = cpu_to_le16(idVendor); - device_desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - device_desc.bcdDevice = cpu_to_le16(bcdDevice); - } - - if (iManufacturer) - strlcpy(manufacturer, iManufacturer, sizeof manufacturer); - - if (iProduct) - strlcpy(product_desc, iProduct, sizeof product_desc); - if (iSerialNum) strlcpy(serial_num, iSerialNum, sizeof serial_num); @@ -1428,8 +1192,9 @@ autoconf_fail: usb_gadget_set_selfpowered(gadget); if (gadget->is_otg) { - otg_desc.bmAttributes |= USB_OTG_HNP, - config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + otg_descriptor.bmAttributes |= USB_OTG_HNP; + printer_cfg_driver.descriptors = otg_desc; + printer_cfg_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; } spin_lock_init(&dev->lock); @@ -1443,7 +1208,6 @@ autoconf_fail: init_waitqueue_head(&dev->tx_wait); init_waitqueue_head(&dev->tx_flush_wait); - dev->config = 0; dev->interface = -1; dev->printer_cdev_open = 0; dev->printer_status = PRINTER_NOT_ERROR; @@ -1454,14 +1218,6 @@ autoconf_fail: dev->in_ep = in_ep; dev->out_ep = out_ep; - /* preallocate control message data and buffer */ - dev->req = printer_req_alloc(gadget->ep0, USB_DESC_BUFSIZE, - GFP_KERNEL); - if (!dev->req) { - status = -ENOMEM; - goto fail; - } - for (i = 0; i < QLEN; i++) { req = printer_req_alloc(dev->in_ep, USB_BUFSIZE, GFP_KERNEL); if (!req) { @@ -1490,45 +1246,37 @@ autoconf_fail: list_add(&req->list, &dev->rx_reqs); } - dev->req->complete = printer_setup_complete; - /* finish hookup to lower layer ... */ dev->gadget = gadget; - set_gadget_data(gadget, dev); - gadget->ep0->driver_data = dev; INFO(dev, "%s, version: " DRIVER_VERSION "\n", driver_desc); INFO(dev, "using %s, OUT %s IN %s\n", gadget->name, out_ep->name, in_ep->name); - return 0; fail: - printer_unbind(gadget); + printer_cfg_unbind(c); return status; } -/*-------------------------------------------------------------------------*/ +static int printer_unbind(struct usb_composite_dev *cdev) +{ + return 0; +} -static struct usb_gadget_driver printer_driver = { - .max_speed = USB_SPEED_HIGH, +static int __init printer_bind(struct usb_composite_dev *cdev) +{ + return usb_add_config(cdev, &printer_cfg_driver, printer_bind_config); +} - .function = (char *) driver_desc, +static struct usb_composite_driver printer_driver = { + .name = shortname, + .dev = &device_desc, + .strings = dev_strings, + .max_speed = USB_SPEED_HIGH, .unbind = printer_unbind, - - .setup = printer_setup, - .disconnect = printer_disconnect, - - .driver = { - .name = (char *) shortname, - .owner = THIS_MODULE, - }, }; -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Craig Nadler"); -MODULE_LICENSE("GPL"); - static int __init init(void) { @@ -1537,23 +1285,23 @@ init(void) usb_gadget_class = class_create(THIS_MODULE, "usb_printer_gadget"); if (IS_ERR(usb_gadget_class)) { status = PTR_ERR(usb_gadget_class); - ERROR(dev, "unable to create usb_gadget class %d\n", status); + pr_err("unable to create usb_gadget class %d\n", status); return status; } status = alloc_chrdev_region(&g_printer_devno, 0, 1, "USB printer gadget"); if (status) { - ERROR(dev, "alloc_chrdev_region %d\n", status); + pr_err("alloc_chrdev_region %d\n", status); class_destroy(usb_gadget_class); return status; } - status = usb_gadget_probe_driver(&printer_driver, printer_bind); + status = usb_composite_probe(&printer_driver, printer_bind); if (status) { class_destroy(usb_gadget_class); unregister_chrdev_region(g_printer_devno, 1); - DBG(dev, "usb_gadget_probe_driver %x\n", status); + pr_err("usb_gadget_probe_driver %x\n", status); } return status; @@ -1563,15 +1311,14 @@ module_init(init); static void __exit cleanup(void) { - int status; - mutex_lock(&usb_printer_gadget.lock_printer_io); - status = usb_gadget_unregister_driver(&printer_driver); - if (status) - ERROR(dev, "usb_gadget_unregister_driver %x\n", status); - + usb_composite_unregister(&printer_driver); unregister_chrdev_region(g_printer_devno, 1); class_destroy(usb_gadget_class); mutex_unlock(&usb_printer_gadget.lock_printer_io); } module_exit(cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Craig Nadler"); +MODULE_LICENSE("GPL"); |