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/*
* 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 Thyrén <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 "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;
};
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(&onetouch->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->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);
}
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;
int pipe, maxp;
char path[64];
interface = ss->pusb_intf->cur_altsetting;
endpoint = &interface->endpoint[2].desc;
if(!(endpoint->bEndpointAddress & 0x80))
return -ENODEV;
if((endpoint->bmAttributes & 3) != 3)
return -ENODEV;
pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
if (!(onetouch = kcalloc(1, sizeof(struct usb_onetouch), GFP_KERNEL)))
return -ENOMEM;
onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN, SLAB_ATOMIC, &onetouch->data_dma);
if (!onetouch->data){
kfree(onetouch);
return -ENOMEM;
}
onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!onetouch->irq){
kfree(onetouch);
usb_buffer_free(udev, ONETOUCH_PKT_LEN, onetouch->data, onetouch->data_dma);
return -ENODEV;
}
onetouch->udev = udev;
set_bit(EV_KEY, onetouch->dev.evbit);
set_bit(ONETOUCH_BUTTON, onetouch->dev.keybit);
clear_bit(0, onetouch->dev.keybit);
onetouch->dev.private = onetouch;
onetouch->dev.open = usb_onetouch_open;
onetouch->dev.close = usb_onetouch_close;
usb_make_path(udev, path, 64);
sprintf(onetouch->phys, "%s/input0", path);
onetouch->dev.name = onetouch->name;
onetouch->dev.phys = onetouch->phys;
onetouch->dev.id.bustype = BUS_USB;
onetouch->dev.id.vendor = le16_to_cpu(udev->descriptor.idVendor);
onetouch->dev.id.product = le16_to_cpu(udev->descriptor.idProduct);
onetouch->dev.id.version = le16_to_cpu(udev->descriptor.bcdDevice);
onetouch->dev.dev = &udev->dev;
if (udev->manufacturer)
strcat(onetouch->name, udev->manufacturer);
if (udev->product)
sprintf(onetouch->name, "%s %s", onetouch->name,
udev->product);
if (!strlen(onetouch->name))
sprintf(onetouch->name, "Maxtor Onetouch %04x:%04x",
onetouch->dev.id.vendor, onetouch->dev.id.product);
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;
input_register_device(&onetouch->dev);
printk(KERN_INFO "usb-input: %s on %s\n", onetouch->dev.name, path);
return 0;
}
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);
printk(KERN_INFO "Maxtor Onetouch %04x:%04x Deregistered\n",
onetouch->dev.id.vendor, onetouch->dev.id.product);
}
}
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