/* * Support for the Maxtor OneTouch USB hard drive's button * * Current development and maintenance by: * Copyright (c) 2005 Nick Sillik * * Initial work by: * Copyright (c) 2003 Erik Thyren * * Based on usbmouse.c (Vojtech Pavlik) and xpad.c (Marko Friedemann) * */ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include #include #include #include "usb.h" #include "debug.h" MODULE_DESCRIPTION("Maxtor USB OneTouch hard drive button driver"); MODULE_AUTHOR("Nick Sillik "); MODULE_LICENSE("GPL"); #define ONETOUCH_PKT_LEN 0x02 #define ONETOUCH_BUTTON KEY_PROG1 static int onetouch_connect_input(struct us_data *ss); static void onetouch_release_input(void *onetouch_); struct usb_onetouch { char name[128]; char phys[64]; struct input_dev *dev; /* input device interface */ struct usb_device *udev; /* usb device */ struct urb *irq; /* urb for interrupt in report */ unsigned char *data; /* input data */ dma_addr_t data_dma; unsigned int is_open:1; }; /* * The table of devices */ #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ vendorName, productName, useProtocol, useTransport, \ initFunction, flags) \ { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags)|(USB_US_TYPE_STOR<<24) } static struct usb_device_id onetouch_usb_ids[] = { # include "unusual_onetouch.h" { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, onetouch_usb_ids); #undef UNUSUAL_DEV /* * The flags table */ #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ vendor_name, product_name, use_protocol, use_transport, \ init_function, Flags) \ { \ .vendorName = vendor_name, \ .productName = product_name, \ .useProtocol = use_protocol, \ .useTransport = use_transport, \ .initFunction = init_function, \ } static struct us_unusual_dev onetouch_unusual_dev_list[] = { # include "unusual_onetouch.h" { } /* Terminating entry */ }; #undef UNUSUAL_DEV static void usb_onetouch_irq(struct urb *urb) { struct usb_onetouch *onetouch = urb->context; signed char *data = onetouch->data; struct input_dev *dev = onetouch->dev; int status = urb->status; int retval; switch (status) { case 0: /* success */ break; case -ECONNRESET: /* unlink */ case -ENOENT: case -ESHUTDOWN: return; /* -EPIPE: should clear the halt */ default: /* error */ goto resubmit; } input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02); input_sync(dev); resubmit: retval = usb_submit_urb (urb, GFP_ATOMIC); if (retval) dev_err(&dev->dev, "can't resubmit intr, %s-%s/input0, " "retval %d\n", onetouch->udev->bus->bus_name, onetouch->udev->devpath, retval); } static int usb_onetouch_open(struct input_dev *dev) { struct usb_onetouch *onetouch = input_get_drvdata(dev); onetouch->is_open = 1; onetouch->irq->dev = onetouch->udev; if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) { dev_err(&dev->dev, "usb_submit_urb failed\n"); return -EIO; } return 0; } static void usb_onetouch_close(struct input_dev *dev) { struct usb_onetouch *onetouch = input_get_drvdata(dev); usb_kill_urb(onetouch->irq); onetouch->is_open = 0; } #ifdef CONFIG_PM static void usb_onetouch_pm_hook(struct us_data *us, int action) { struct usb_onetouch *onetouch = (struct usb_onetouch *) us->extra; if (onetouch->is_open) { switch (action) { case US_SUSPEND: usb_kill_urb(onetouch->irq); break; case US_RESUME: if (usb_submit_urb(onetouch->irq, GFP_NOIO) != 0) dev_err(&onetouch->irq->dev->dev, "usb_submit_urb failed\n"); break; default: break; } } } #endif /* CONFIG_PM */ static int onetouch_connect_input(struct us_data *ss) { struct usb_device *udev = ss->pusb_dev; struct usb_host_interface *interface; struct usb_endpoint_descriptor *endpoint; struct usb_onetouch *onetouch; struct input_dev *input_dev; int pipe, maxp; int error = -ENOMEM; interface = ss->pusb_intf->cur_altsetting; if (interface->desc.bNumEndpoints != 3) return -ENODEV; endpoint = &interface->endpoint[2].desc; if (!usb_endpoint_is_int_in(endpoint)) return -ENODEV; pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL); input_dev = input_allocate_device(); if (!onetouch || !input_dev) goto fail1; onetouch->data = usb_alloc_coherent(udev, ONETOUCH_PKT_LEN, GFP_KERNEL, &onetouch->data_dma); if (!onetouch->data) goto fail1; onetouch->irq = usb_alloc_urb(0, GFP_KERNEL); if (!onetouch->irq) goto fail2; onetouch->udev = udev; onetouch->dev = input_dev; if (udev->manufacturer) strlcpy(onetouch->name, udev->manufacturer, sizeof(onetouch->name)); if (udev->product) { if (udev->manufacturer) strlcat(onetouch->name, " ", sizeof(onetouch->name)); strlcat(onetouch->name, udev->product, sizeof(onetouch->name)); } if (!strlen(onetouch->name)) snprintf(onetouch->name, sizeof(onetouch->name), "Maxtor Onetouch %04x:%04x", le16_to_cpu(udev->descriptor.idVendor), le16_to_cpu(udev->descriptor.idProduct)); usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys)); strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys)); input_dev->name = onetouch->name; input_dev->phys = onetouch->phys; usb_to_input_id(udev, &input_dev->id); input_dev->dev.parent = &udev->dev; set_bit(EV_KEY, input_dev->evbit); set_bit(ONETOUCH_BUTTON, input_dev->keybit); clear_bit(0, input_dev->keybit); input_set_drvdata(input_dev, onetouch); input_dev->open = usb_onetouch_open; input_dev->close = usb_onetouch_close; usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data, (maxp > 8 ? 8 : maxp), usb_onetouch_irq, onetouch, endpoint->bInterval); onetouch->irq->transfer_dma = onetouch->data_dma; onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; ss->extra_destructor = onetouch_release_input; ss->extra = onetouch; #ifdef CONFIG_PM ss->suspend_resume_hook = usb_onetouch_pm_hook; #endif error = input_register_device(onetouch->dev); if (error) goto fail3; return 0; fail3: usb_free_urb(onetouch->irq); fail2: usb_free_coherent(udev, ONETOUCH_PKT_LEN, onetouch->data, onetouch->data_dma); fail1: kfree(onetouch); input_free_device(input_dev); return error; } static void onetouch_release_input(void *onetouch_) { struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_; if (onetouch) { usb_kill_urb(onetouch->irq); input_unregister_device(onetouch->dev); usb_free_urb(onetouch->irq); usb_free_coherent(onetouch->udev, ONETOUCH_PKT_LEN, onetouch->data, onetouch->data_dma); } } static int onetouch_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct us_data *us; int result; result = usb_stor_probe1(&us, intf, id, (id - onetouch_usb_ids) + onetouch_unusual_dev_list); if (result) return result; /* Use default transport and protocol */ result = usb_stor_probe2(us); return result; } static struct usb_driver onetouch_driver = { .name = "ums-onetouch", .probe = onetouch_probe, .disconnect = usb_stor_disconnect, .suspend = usb_stor_suspend, .resume = usb_stor_resume, .reset_resume = usb_stor_reset_resume, .pre_reset = usb_stor_pre_reset, .post_reset = usb_stor_post_reset, .id_table = onetouch_usb_ids, .soft_unbind = 1, }; module_usb_driver(onetouch_driver);