linux-stable/drivers/usb/storage/onetouch.c
Matthias Maennich 32bca2df7d usb-storage: export symbols in USB_STORAGE namespace
Modules using these symbols are required to explicitly import the
namespace. This patch was generated with the following steps and serves
as a reference to use the symbol namespace feature:

 1) Define DEFAULT_SYMBOL_NAMESPACE in the corresponding Makefile
 2) make  (see warnings during modpost about missing imports)
 3) make nsdeps

Instead of a DEFAULT_SYMBOL_NAMESPACE definition, the EXPORT_SYMBOL_NS
variants can be used to explicitly specify the namespace. The advantage
of the method used here is that newly added symbols are automatically
exported and existing ones are exported without touching their
respective EXPORT_SYMBOL macro expansion.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
2019-09-10 10:30:57 +02:00

307 lines
7.6 KiB
C

// 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);