1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31#include <linux/kernel.h>
32#include <linux/input.h>
33#include <linux/slab.h>
34#include <linux/module.h>
35#include <linux/usb/input.h>
36#include "usb.h"
37#include "debug.h"
38#include "scsiglue.h"
39
40#define DRV_NAME "ums-onetouch"
41
42MODULE_DESCRIPTION("Maxtor USB OneTouch hard drive button driver");
43MODULE_AUTHOR("Nick Sillik <n.sillik@temple.edu>");
44MODULE_LICENSE("GPL");
45
46#define ONETOUCH_PKT_LEN 0x02
47#define ONETOUCH_BUTTON KEY_PROG1
48
49static int onetouch_connect_input(struct us_data *ss);
50static void onetouch_release_input(void *onetouch_);
51
52struct usb_onetouch {
53 char name[128];
54 char phys[64];
55 struct input_dev *dev;
56 struct usb_device *udev;
57
58 struct urb *irq;
59 unsigned char *data;
60 dma_addr_t data_dma;
61 unsigned int is_open:1;
62};
63
64
65
66
67
68#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
69 vendorName, productName, useProtocol, useTransport, \
70 initFunction, flags) \
71{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
72 .driver_info = (flags) }
73
74static struct usb_device_id onetouch_usb_ids[] = {
75# include "unusual_onetouch.h"
76 { }
77};
78MODULE_DEVICE_TABLE(usb, onetouch_usb_ids);
79
80#undef UNUSUAL_DEV
81
82
83
84
85#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
86 vendor_name, product_name, use_protocol, use_transport, \
87 init_function, Flags) \
88{ \
89 .vendorName = vendor_name, \
90 .productName = product_name, \
91 .useProtocol = use_protocol, \
92 .useTransport = use_transport, \
93 .initFunction = init_function, \
94}
95
96static struct us_unusual_dev onetouch_unusual_dev_list[] = {
97# include "unusual_onetouch.h"
98 { }
99};
100
101#undef UNUSUAL_DEV
102
103
104static void usb_onetouch_irq(struct urb *urb)
105{
106 struct usb_onetouch *onetouch = urb->context;
107 signed char *data = onetouch->data;
108 struct input_dev *dev = onetouch->dev;
109 int status = urb->status;
110 int retval;
111
112 switch (status) {
113 case 0:
114 break;
115 case -ECONNRESET:
116 case -ENOENT:
117 case -ESHUTDOWN:
118 return;
119
120 default:
121 goto resubmit;
122 }
123
124 input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02);
125 input_sync(dev);
126
127resubmit:
128 retval = usb_submit_urb (urb, GFP_ATOMIC);
129 if (retval)
130 dev_err(&dev->dev, "can't resubmit intr, %s-%s/input0, "
131 "retval %d\n", onetouch->udev->bus->bus_name,
132 onetouch->udev->devpath, retval);
133}
134
135static int usb_onetouch_open(struct input_dev *dev)
136{
137 struct usb_onetouch *onetouch = input_get_drvdata(dev);
138
139 onetouch->is_open = 1;
140 onetouch->irq->dev = onetouch->udev;
141 if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) {
142 dev_err(&dev->dev, "usb_submit_urb failed\n");
143 return -EIO;
144 }
145
146 return 0;
147}
148
149static void usb_onetouch_close(struct input_dev *dev)
150{
151 struct usb_onetouch *onetouch = input_get_drvdata(dev);
152
153 usb_kill_urb(onetouch->irq);
154 onetouch->is_open = 0;
155}
156
157#ifdef CONFIG_PM
158static void usb_onetouch_pm_hook(struct us_data *us, int action)
159{
160 struct usb_onetouch *onetouch = (struct usb_onetouch *) us->extra;
161
162 if (onetouch->is_open) {
163 switch (action) {
164 case US_SUSPEND:
165 usb_kill_urb(onetouch->irq);
166 break;
167 case US_RESUME:
168 if (usb_submit_urb(onetouch->irq, GFP_NOIO) != 0)
169 dev_err(&onetouch->irq->dev->dev,
170 "usb_submit_urb failed\n");
171 break;
172 default:
173 break;
174 }
175 }
176}
177#endif
178
179static int onetouch_connect_input(struct us_data *ss)
180{
181 struct usb_device *udev = ss->pusb_dev;
182 struct usb_host_interface *interface;
183 struct usb_endpoint_descriptor *endpoint;
184 struct usb_onetouch *onetouch;
185 struct input_dev *input_dev;
186 int pipe, maxp;
187 int error = -ENOMEM;
188
189 interface = ss->pusb_intf->cur_altsetting;
190
191 if (interface->desc.bNumEndpoints != 3)
192 return -ENODEV;
193
194 endpoint = &interface->endpoint[2].desc;
195 if (!usb_endpoint_is_int_in(endpoint))
196 return -ENODEV;
197
198 pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
199 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
200 maxp = min(maxp, ONETOUCH_PKT_LEN);
201
202 onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
203 input_dev = input_allocate_device();
204 if (!onetouch || !input_dev)
205 goto fail1;
206
207 onetouch->data = usb_alloc_coherent(udev, ONETOUCH_PKT_LEN,
208 GFP_KERNEL, &onetouch->data_dma);
209 if (!onetouch->data)
210 goto fail1;
211
212 onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
213 if (!onetouch->irq)
214 goto fail2;
215
216 onetouch->udev = udev;
217 onetouch->dev = input_dev;
218
219 if (udev->manufacturer)
220 strlcpy(onetouch->name, udev->manufacturer,
221 sizeof(onetouch->name));
222 if (udev->product) {
223 if (udev->manufacturer)
224 strlcat(onetouch->name, " ", sizeof(onetouch->name));
225 strlcat(onetouch->name, udev->product, sizeof(onetouch->name));
226 }
227
228 if (!strlen(onetouch->name))
229 snprintf(onetouch->name, sizeof(onetouch->name),
230 "Maxtor Onetouch %04x:%04x",
231 le16_to_cpu(udev->descriptor.idVendor),
232 le16_to_cpu(udev->descriptor.idProduct));
233
234 usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys));
235 strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys));
236
237 input_dev->name = onetouch->name;
238 input_dev->phys = onetouch->phys;
239 usb_to_input_id(udev, &input_dev->id);
240 input_dev->dev.parent = &udev->dev;
241
242 set_bit(EV_KEY, input_dev->evbit);
243 set_bit(ONETOUCH_BUTTON, input_dev->keybit);
244 clear_bit(0, input_dev->keybit);
245
246 input_set_drvdata(input_dev, onetouch);
247
248 input_dev->open = usb_onetouch_open;
249 input_dev->close = usb_onetouch_close;
250
251 usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data, maxp,
252 usb_onetouch_irq, onetouch, endpoint->bInterval);
253 onetouch->irq->transfer_dma = onetouch->data_dma;
254 onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
255
256 ss->extra_destructor = onetouch_release_input;
257 ss->extra = onetouch;
258#ifdef CONFIG_PM
259 ss->suspend_resume_hook = usb_onetouch_pm_hook;
260#endif
261
262 error = input_register_device(onetouch->dev);
263 if (error)
264 goto fail3;
265
266 return 0;
267
268 fail3: usb_free_urb(onetouch->irq);
269 fail2: usb_free_coherent(udev, ONETOUCH_PKT_LEN,
270 onetouch->data, onetouch->data_dma);
271 fail1: kfree(onetouch);
272 input_free_device(input_dev);
273 return error;
274}
275
276static void onetouch_release_input(void *onetouch_)
277{
278 struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_;
279
280 if (onetouch) {
281 usb_kill_urb(onetouch->irq);
282 input_unregister_device(onetouch->dev);
283 usb_free_urb(onetouch->irq);
284 usb_free_coherent(onetouch->udev, ONETOUCH_PKT_LEN,
285 onetouch->data, onetouch->data_dma);
286 }
287}
288
289static struct scsi_host_template onetouch_host_template;
290
291static int onetouch_probe(struct usb_interface *intf,
292 const struct usb_device_id *id)
293{
294 struct us_data *us;
295 int result;
296
297 result = usb_stor_probe1(&us, intf, id,
298 (id - onetouch_usb_ids) + onetouch_unusual_dev_list,
299 &onetouch_host_template);
300 if (result)
301 return result;
302
303
304
305 result = usb_stor_probe2(us);
306 return result;
307}
308
309static struct usb_driver onetouch_driver = {
310 .name = DRV_NAME,
311 .probe = onetouch_probe,
312 .disconnect = usb_stor_disconnect,
313 .suspend = usb_stor_suspend,
314 .resume = usb_stor_resume,
315 .reset_resume = usb_stor_reset_resume,
316 .pre_reset = usb_stor_pre_reset,
317 .post_reset = usb_stor_post_reset,
318 .id_table = onetouch_usb_ids,
319 .soft_unbind = 1,
320 .no_dynamic_id = 1,
321};
322
323module_usb_stor_driver(onetouch_driver, onetouch_host_template, DRV_NAME);
324
