// 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 <[email protected]>
*
* Initial work by:
* Copyright (c) 2003 Erik Thyren <[email protected]>
*
* 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 <[email protected]>");
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 const 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 const 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);
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)
strscpy(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);
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