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Matthew Dharm
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Greg Kroah-Hartman
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Sep 8, 2005
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--- | ||
refs/heads/master: 26186ba77b493204ae0fadc3c88a67b14f22168f | ||
refs/heads/master: 34008dbfe8c00eca67f97bad484eb5cb03bafe66 |
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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) | ||
* | ||
*/ | ||
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/* | ||
* 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 | ||
* | ||
*/ | ||
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#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" | ||
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void onetouch_release_input(void *onetouch_); | ||
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struct usb_onetouch { | ||
char name[128]; | ||
char phys[64]; | ||
struct input_dev dev; /* input device interface */ | ||
struct usb_device *udev; /* usb device */ | ||
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struct urb *irq; /* urb for interrupt in report */ | ||
unsigned char *data; /* input data */ | ||
dma_addr_t data_dma; | ||
}; | ||
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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; | ||
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switch (urb->status) { | ||
case 0: /* success */ | ||
break; | ||
case -ECONNRESET: /* unlink */ | ||
case -ENOENT: | ||
case -ESHUTDOWN: | ||
return; | ||
/* -EPIPE: should clear the halt */ | ||
default: /* error */ | ||
goto resubmit; | ||
} | ||
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input_regs(dev, regs); | ||
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input_report_key(&onetouch->dev, ONETOUCH_BUTTON, | ||
data[0] & 0x02); | ||
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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); | ||
} | ||
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static int usb_onetouch_open(struct input_dev *dev) | ||
{ | ||
struct usb_onetouch *onetouch = dev->private; | ||
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onetouch->irq->dev = onetouch->udev; | ||
if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) { | ||
err("usb_submit_urb failed"); | ||
return -EIO; | ||
} | ||
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return 0; | ||
} | ||
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static void usb_onetouch_close(struct input_dev *dev) | ||
{ | ||
struct usb_onetouch *onetouch = dev->private; | ||
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usb_kill_urb(onetouch->irq); | ||
} | ||
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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]; | ||
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interface = ss->pusb_intf->cur_altsetting; | ||
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endpoint = &interface->endpoint[2].desc; | ||
if(!(endpoint->bEndpointAddress & 0x80)) | ||
return -ENODEV; | ||
if((endpoint->bmAttributes & 3) != 3) | ||
return -ENODEV; | ||
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pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); | ||
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); | ||
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if (!(onetouch = kcalloc(1, sizeof(struct usb_onetouch), GFP_KERNEL))) | ||
return -ENOMEM; | ||
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onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN, SLAB_ATOMIC, &onetouch->data_dma); | ||
if (!onetouch->data){ | ||
kfree(onetouch); | ||
return -ENOMEM; | ||
} | ||
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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; | ||
} | ||
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onetouch->udev = udev; | ||
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set_bit(EV_KEY, onetouch->dev.evbit); | ||
set_bit(ONETOUCH_BUTTON, onetouch->dev.keybit); | ||
clear_bit(0, onetouch->dev.keybit); | ||
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onetouch->dev.private = onetouch; | ||
onetouch->dev.open = usb_onetouch_open; | ||
onetouch->dev.close = usb_onetouch_close; | ||
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usb_make_path(udev, path, 64); | ||
sprintf(onetouch->phys, "%s/input0", path); | ||
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onetouch->dev.name = onetouch->name; | ||
onetouch->dev.phys = onetouch->phys; | ||
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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); | ||
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onetouch->dev.dev = &udev->dev; | ||
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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); | ||
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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; | ||
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ss->extra_destructor = onetouch_release_input; | ||
ss->extra = onetouch; | ||
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input_register_device(&onetouch->dev); | ||
printk(KERN_INFO "usb-input: %s on %s\n", onetouch->dev.name, path); | ||
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return 0; | ||
} | ||
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void onetouch_release_input(void *onetouch_) | ||
{ | ||
struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_; | ||
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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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#ifndef _ONETOUCH_H_ | ||
#define _ONETOUCH_H_ | ||
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#define ONETOUCH_PKT_LEN 0x02 | ||
#define ONETOUCH_BUTTON KEY_PROG1 | ||
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int onetouch_connect_input(struct us_data *ss); | ||
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#endif |
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