// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* 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)
|
*
|
*/
|
#include <linux/kernel.h>
|
#include <linux/input.h>
|
#include <linux/slab.h>
|
#include <linux/module.h>
|
#include <linux/usb/input.h>
|
#include "usb.h"
|
#include "debug.h"
|
#include "scsiglue.h"
|
|
#define DRV_NAME "ums-onetouch"
|
|
MODULE_DESCRIPTION("Maxtor USB OneTouch hard drive button driver");
|
MODULE_AUTHOR("Nick Sillik <n.sillik@temple.edu>");
|
MODULE_LICENSE("GPL");
|
MODULE_IMPORT_NS(USB_STORAGE);
|
|
#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) }
|
|
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));
|
maxp = min(maxp, ONETOUCH_PKT_LEN);
|
|
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,
|
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 struct scsi_host_template onetouch_host_template;
|
|
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,
|
&onetouch_host_template);
|
if (result)
|
return result;
|
|
/* Use default transport and protocol */
|
|
result = usb_stor_probe2(us);
|
return result;
|
}
|
|
static struct usb_driver onetouch_driver = {
|
.name = DRV_NAME,
|
.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,
|
.no_dynamic_id = 1,
|
};
|
|
module_usb_stor_driver(onetouch_driver, onetouch_host_template, DRV_NAME);
|
