| /* |
| * Support for the Maxtor OneTouch USB hard drive's button |
| * |
| * Current development and maintenance by: |
| * Copyright (c) 2005 Nick Sillik <n.sillik@temple.edu> |
| * |
| * Initial work by: |
| * Copyright (c) 2003 Erik Thyren <erth7411@student.uu.se> |
| * |
| * 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 <linux/kernel.h> |
| #include <linux/input.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/usb/input.h> |
| #include "usb.h" |
| #include "debug.h" |
| |
| MODULE_DESCRIPTION("Maxtor USB OneTouch hard drive button driver"); |
| MODULE_AUTHOR("Nick Sillik <n.sillik@temple.edu>"); |
| 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) } |
| |
| 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, |
| }; |
| |
| static int __init onetouch_init(void) |
| { |
| return usb_register(&onetouch_driver); |
| } |
| |
| static void __exit onetouch_exit(void) |
| { |
| usb_deregister(&onetouch_driver); |
| } |
| |
| module_init(onetouch_init); |
| module_exit(onetouch_exit); |