| /* |
| * 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/config.h> |
| #include <linux/kernel.h> |
| #include <linux/input.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/usb.h> |
| #include <linux/usb_ch9.h> |
| #include <linux/usb_input.h> |
| #include "usb.h" |
| #include "onetouch.h" |
| #include "debug.h" |
| |
| 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; |
| }; |
| |
| static void usb_onetouch_irq(struct urb *urb, struct pt_regs *regs) |
| { |
| struct usb_onetouch *onetouch = urb->context; |
| signed char *data = onetouch->data; |
| struct input_dev *dev = onetouch->dev; |
| int status; |
| |
| switch (urb->status) { |
| case 0: /* success */ |
| break; |
| case -ECONNRESET: /* unlink */ |
| case -ENOENT: |
| case -ESHUTDOWN: |
| return; |
| /* -EPIPE: should clear the halt */ |
| default: /* error */ |
| goto resubmit; |
| } |
| |
| input_regs(dev, regs); |
| input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02); |
| input_sync(dev); |
| |
| resubmit: |
| status = usb_submit_urb (urb, SLAB_ATOMIC); |
| if (status) |
| err ("can't resubmit intr, %s-%s/input0, status %d", |
| onetouch->udev->bus->bus_name, |
| onetouch->udev->devpath, status); |
| } |
| |
| static int usb_onetouch_open(struct input_dev *dev) |
| { |
| struct usb_onetouch *onetouch = dev->private; |
| |
| onetouch->is_open = 1; |
| onetouch->irq->dev = onetouch->udev; |
| if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) { |
| err("usb_submit_urb failed"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static void usb_onetouch_close(struct input_dev *dev) |
| { |
| struct usb_onetouch *onetouch = dev->private; |
| |
| 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_KERNEL) != 0) |
| err("usb_submit_urb failed"); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| #endif /* CONFIG_PM */ |
| |
| 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; |
| |
| interface = ss->pusb_intf->cur_altsetting; |
| |
| if (interface->desc.bNumEndpoints != 3) |
| return -ENODEV; |
| |
| endpoint = &interface->endpoint[2].desc; |
| if (!(endpoint->bEndpointAddress & USB_DIR_IN)) |
| return -ENODEV; |
| if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) |
| != USB_ENDPOINT_XFER_INT) |
| 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_buffer_alloc(udev, ONETOUCH_PKT_LEN, |
| SLAB_ATOMIC, &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->cdev.dev = &udev->dev; |
| |
| set_bit(EV_KEY, input_dev->evbit); |
| set_bit(ONETOUCH_BUTTON, input_dev->keybit); |
| clear_bit(0, input_dev->keybit); |
| |
| input_dev->private = 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 |
| |
| input_register_device(onetouch->dev); |
| |
| return 0; |
| |
| fail2: usb_buffer_free(udev, ONETOUCH_PKT_LEN, |
| onetouch->data, onetouch->data_dma); |
| fail1: kfree(onetouch); |
| input_free_device(input_dev); |
| return -ENOMEM; |
| } |
| |
| 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_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN, |
| onetouch->data, onetouch->data_dma); |
| } |
| } |