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Linux 2.6.33-rc8
[linux-2.6/lguest.git] / drivers / input / misc / cm109.c
blob86457feccfc4f2fdbf3834adea42b1a32ed9e0d6
1 /*
2 * Driver for the VoIP USB phones with CM109 chipsets.
3 *
4 * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@db.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
9 */
10
11 /*
12 * Tested devices:
13 * - Komunikate KIP1000
14 * - Genius G-talk
15 * - Allied-Telesis Corega USBPH01
16 * - ...
17 *
18 * This driver is based on the yealink.c driver
19 *
20 * Thanks to:
21 * - Authors of yealink.c
22 * - Thomas Reitmayr
23 * - Oliver Neukum for good review comments and code
24 * - Shaun Jackman <sjackman@gmail.com> for Genius G-talk keymap
25 * - Dmitry Torokhov for valuable input and review
26 *
27 * Todo:
28 * - Read/write EEPROM
29 */
30
31 #include <linux/kernel.h>
32 #include <linux/init.h>
33 #include <linux/slab.h>
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/rwsem.h>
37 #include <linux/usb/input.h>
38
39 #define DRIVER_VERSION "20080805"
40 #define DRIVER_AUTHOR "Alfred E. Heggestad"
41 #define DRIVER_DESC "CM109 phone driver"
42
43 static char *phone = "kip1000";
44 module_param(phone, charp, S_IRUSR);
45 MODULE_PARM_DESC(phone, "Phone name {kip1000, gtalk, usbph01, atcom}");
46
47 enum {
48 /* HID Registers */
49 HID_IR0 = 0x00, /* Record/Playback-mute button, Volume up/down */
50 HID_IR1 = 0x01, /* GPI, generic registers or EEPROM_DATA0 */
51 HID_IR2 = 0x02, /* Generic registers or EEPROM_DATA1 */
52 HID_IR3 = 0x03, /* Generic registers or EEPROM_CTRL */
53 HID_OR0 = 0x00, /* Mapping control, buzzer, SPDIF (offset 0x04) */
54 HID_OR1 = 0x01, /* GPO - General Purpose Output */
55 HID_OR2 = 0x02, /* Set GPIO to input/output mode */
56 HID_OR3 = 0x03, /* SPDIF status channel or EEPROM_CTRL */
57
58 /* HID_IR0 */
59 RECORD_MUTE = 1 << 3,
60 PLAYBACK_MUTE = 1 << 2,
61 VOLUME_DOWN = 1 << 1,
62 VOLUME_UP = 1 << 0,
63
64 /* HID_OR0 */
65 /* bits 7-6
66 0: HID_OR1-2 are used for GPO; HID_OR0, 3 are used for buzzer
67 and SPDIF
68 1: HID_OR0-3 are used as generic HID registers
69 2: Values written to HID_OR0-3 are also mapped to MCU_CTRL,
70 EEPROM_DATA0-1, EEPROM_CTRL (see Note)
71 3: Reserved
72 */
73 HID_OR_GPO_BUZ_SPDIF = 0 << 6,
74 HID_OR_GENERIC_HID_REG = 1 << 6,
75 HID_OR_MAP_MCU_EEPROM = 2 << 6,
76
77 BUZZER_ON = 1 << 5,
78
79 /* up to 256 normal keys, up to 16 special keys */
80 KEYMAP_SIZE = 256 + 16,
81 };
82
83 /* CM109 protocol packet */
84 struct cm109_ctl_packet {
85 u8 byte[4];
86 } __attribute__ ((packed));
87
88 enum { USB_PKT_LEN = sizeof(struct cm109_ctl_packet) };
89
90 /* CM109 device structure */
91 struct cm109_dev {
92 struct input_dev *idev; /* input device */
93 struct usb_device *udev; /* usb device */
94 struct usb_interface *intf;
95
96 /* irq input channel */
97 struct cm109_ctl_packet *irq_data;
98 dma_addr_t irq_dma;
99 struct urb *urb_irq;
100
101 /* control output channel */
102 struct cm109_ctl_packet *ctl_data;
103 dma_addr_t ctl_dma;
104 struct usb_ctrlrequest *ctl_req;
105 dma_addr_t ctl_req_dma;
106 struct urb *urb_ctl;
107 /*
108 * The 3 bitfields below are protected by ctl_submit_lock.
109 * They have to be separate since they are accessed from IRQ
110 * context.
111 */
112 unsigned irq_urb_pending:1; /* irq_urb is in flight */
113 unsigned ctl_urb_pending:1; /* ctl_urb is in flight */
114 unsigned buzzer_pending:1; /* need to issue buzz command */
115 spinlock_t ctl_submit_lock;
116
117 unsigned char buzzer_state; /* on/off */
118
119 /* flags */
120 unsigned open:1;
121 unsigned resetting:1;
122 unsigned shutdown:1;
123
124 /* This mutex protects writes to the above flags */
125 struct mutex pm_mutex;
126
127 unsigned short keymap[KEYMAP_SIZE];
128
129 char phys[64]; /* physical device path */
130 int key_code; /* last reported key */
131 int keybit; /* 0=new scan 1,2,4,8=scan columns */
132 u8 gpi; /* Cached value of GPI (high nibble) */
133 };
134
135 /******************************************************************************
136 * CM109 key interface
137 *****************************************************************************/
138
139 static unsigned short special_keymap(int code)
140 {
141 if (code > 0xff) {
142 switch (code - 0xff) {
143 case RECORD_MUTE: return KEY_MUTE;
144 case PLAYBACK_MUTE: return KEY_MUTE;
145 case VOLUME_DOWN: return KEY_VOLUMEDOWN;
146 case VOLUME_UP: return KEY_VOLUMEUP;
147 }
148 }
149 return KEY_RESERVED;
150 }
151
152 /* Map device buttons to internal key events.
153 *
154 * The "up" and "down" keys, are symbolised by arrows on the button.
155 * The "pickup" and "hangup" keys are symbolised by a green and red phone
156 * on the button.
157
158 Komunikate KIP1000 Keyboard Matrix
159
160 -> -- 1 -- 2 -- 3 --> GPI pin 4 (0x10)
161 | | | |
162 <- -- 4 -- 5 -- 6 --> GPI pin 5 (0x20)
163 | | | |
164 END - 7 -- 8 -- 9 --> GPI pin 6 (0x40)
165 | | | |
166 OK -- * -- 0 -- # --> GPI pin 7 (0x80)
167 | | | |
168
169 /|\ /|\ /|\ /|\
170 | | | |
171 GPO
172 pin: 3 2 1 0
173 0x8 0x4 0x2 0x1
174
175 */
176 static unsigned short keymap_kip1000(int scancode)
177 {
178 switch (scancode) { /* phone key: */
179 case 0x82: return KEY_NUMERIC_0; /* 0 */
180 case 0x14: return KEY_NUMERIC_1; /* 1 */
181 case 0x12: return KEY_NUMERIC_2; /* 2 */
182 case 0x11: return KEY_NUMERIC_3; /* 3 */
183 case 0x24: return KEY_NUMERIC_4; /* 4 */
184 case 0x22: return KEY_NUMERIC_5; /* 5 */
185 case 0x21: return KEY_NUMERIC_6; /* 6 */
186 case 0x44: return KEY_NUMERIC_7; /* 7 */
187 case 0x42: return KEY_NUMERIC_8; /* 8 */
188 case 0x41: return KEY_NUMERIC_9; /* 9 */
189 case 0x81: return KEY_NUMERIC_POUND; /* # */
190 case 0x84: return KEY_NUMERIC_STAR; /* * */
191 case 0x88: return KEY_ENTER; /* pickup */
192 case 0x48: return KEY_ESC; /* hangup */
193 case 0x28: return KEY_LEFT; /* IN */
194 case 0x18: return KEY_RIGHT; /* OUT */
195 default: return special_keymap(scancode);
196 }
197 }
198
199 /*
200 Contributed by Shaun Jackman <sjackman@gmail.com>
201
202 Genius G-Talk keyboard matrix
203 0 1 2 3
204 4: 0 4 8 Talk
205 5: 1 5 9 End
206 6: 2 6 # Up
207 7: 3 7 * Down
208 */
209 static unsigned short keymap_gtalk(int scancode)
210 {
211 switch (scancode) {
212 case 0x11: return KEY_NUMERIC_0;
213 case 0x21: return KEY_NUMERIC_1;
214 case 0x41: return KEY_NUMERIC_2;
215 case 0x81: return KEY_NUMERIC_3;
216 case 0x12: return KEY_NUMERIC_4;
217 case 0x22: return KEY_NUMERIC_5;
218 case 0x42: return KEY_NUMERIC_6;
219 case 0x82: return KEY_NUMERIC_7;
220 case 0x14: return KEY_NUMERIC_8;
221 case 0x24: return KEY_NUMERIC_9;
222 case 0x44: return KEY_NUMERIC_POUND; /* # */
223 case 0x84: return KEY_NUMERIC_STAR; /* * */
224 case 0x18: return KEY_ENTER; /* Talk (green handset) */
225 case 0x28: return KEY_ESC; /* End (red handset) */
226 case 0x48: return KEY_UP; /* Menu up (rocker switch) */
227 case 0x88: return KEY_DOWN; /* Menu down (rocker switch) */
228 default: return special_keymap(scancode);
229 }
230 }
231
232 /*
233 * Keymap for Allied-Telesis Corega USBPH01
234 * http://www.alliedtelesis-corega.com/2/1344/1437/1360/chprd.html
235 *
236 * Contributed by july@nat.bg
237 */
238 static unsigned short keymap_usbph01(int scancode)
239 {
240 switch (scancode) {
241 case 0x11: return KEY_NUMERIC_0; /* 0 */
242 case 0x21: return KEY_NUMERIC_1; /* 1 */
243 case 0x41: return KEY_NUMERIC_2; /* 2 */
244 case 0x81: return KEY_NUMERIC_3; /* 3 */
245 case 0x12: return KEY_NUMERIC_4; /* 4 */
246 case 0x22: return KEY_NUMERIC_5; /* 5 */
247 case 0x42: return KEY_NUMERIC_6; /* 6 */
248 case 0x82: return KEY_NUMERIC_7; /* 7 */
249 case 0x14: return KEY_NUMERIC_8; /* 8 */
250 case 0x24: return KEY_NUMERIC_9; /* 9 */
251 case 0x44: return KEY_NUMERIC_POUND; /* # */
252 case 0x84: return KEY_NUMERIC_STAR; /* * */
253 case 0x18: return KEY_ENTER; /* pickup */
254 case 0x28: return KEY_ESC; /* hangup */
255 case 0x48: return KEY_LEFT; /* IN */
256 case 0x88: return KEY_RIGHT; /* OUT */
257 default: return special_keymap(scancode);
258 }
259 }
260
261 /*
262 * Keymap for ATCom AU-100
263 * http://www.atcom.cn/En_products_AU100.html
264 * http://www.packetizer.com/products/au100/
265 * http://www.voip-info.org/wiki/view/AU-100
266 *
267 * Contributed by daniel@gimpelevich.san-francisco.ca.us
268 */
269 static unsigned short keymap_atcom(int scancode)
270 {
271 switch (scancode) { /* phone key: */
272 case 0x82: return KEY_NUMERIC_0; /* 0 */
273 case 0x11: return KEY_NUMERIC_1; /* 1 */
274 case 0x12: return KEY_NUMERIC_2; /* 2 */
275 case 0x14: return KEY_NUMERIC_3; /* 3 */
276 case 0x21: return KEY_NUMERIC_4; /* 4 */
277 case 0x22: return KEY_NUMERIC_5; /* 5 */
278 case 0x24: return KEY_NUMERIC_6; /* 6 */
279 case 0x41: return KEY_NUMERIC_7; /* 7 */
280 case 0x42: return KEY_NUMERIC_8; /* 8 */
281 case 0x44: return KEY_NUMERIC_9; /* 9 */
282 case 0x84: return KEY_NUMERIC_POUND; /* # */
283 case 0x81: return KEY_NUMERIC_STAR; /* * */
284 case 0x18: return KEY_ENTER; /* pickup */
285 case 0x28: return KEY_ESC; /* hangup */
286 case 0x48: return KEY_LEFT; /* left arrow */
287 case 0x88: return KEY_RIGHT; /* right arrow */
288 default: return special_keymap(scancode);
289 }
290 }
291
292 static unsigned short (*keymap)(int) = keymap_kip1000;
293
294 /*
295 * Completes a request by converting the data into events for the
296 * input subsystem.
297 */
298 static void report_key(struct cm109_dev *dev, int key)
299 {
300 struct input_dev *idev = dev->idev;
301
302 if (dev->key_code >= 0) {
303 /* old key up */
304 input_report_key(idev, dev->key_code, 0);
305 }
306
307 dev->key_code = key;
308 if (key >= 0) {
309 /* new valid key */
310 input_report_key(idev, key, 1);
311 }
312
313 input_sync(idev);
314 }
315
316 /******************************************************************************
317 * CM109 usb communication interface
318 *****************************************************************************/
319
320 static void cm109_submit_buzz_toggle(struct cm109_dev *dev)
321 {
322 int error;
323
324 if (dev->buzzer_state)
325 dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
326 else
327 dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
328
329 error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
330 if (error)
331 err("%s: usb_submit_urb (urb_ctl) failed %d", __func__, error);
332 }
333
334 /*
335 * IRQ handler
336 */
337 static void cm109_urb_irq_callback(struct urb *urb)
338 {
339 struct cm109_dev *dev = urb->context;
340 const int status = urb->status;
341 int error;
342
343 dev_dbg(&urb->dev->dev, "### URB IRQ: [0x%02x 0x%02x 0x%02x 0x%02x] keybit=0x%02x\n",
344 dev->irq_data->byte[0],
345 dev->irq_data->byte[1],
346 dev->irq_data->byte[2],
347 dev->irq_data->byte[3],
348 dev->keybit);
349
350 if (status) {
351 if (status == -ESHUTDOWN)
352 return;
353 err("%s: urb status %d", __func__, status);
354 }
355
356 /* Special keys */
357 if (dev->irq_data->byte[HID_IR0] & 0x0f) {
358 const int code = (dev->irq_data->byte[HID_IR0] & 0x0f);
359 report_key(dev, dev->keymap[0xff + code]);
360 }
361
362 /* Scan key column */
363 if (dev->keybit == 0xf) {
364
365 /* Any changes ? */
366 if ((dev->gpi & 0xf0) == (dev->irq_data->byte[HID_IR1] & 0xf0))
367 goto out;
368
369 dev->gpi = dev->irq_data->byte[HID_IR1] & 0xf0;
370 dev->keybit = 0x1;
371 } else {
372 report_key(dev, dev->keymap[dev->irq_data->byte[HID_IR1]]);
373
374 dev->keybit <<= 1;
375 if (dev->keybit > 0x8)
376 dev->keybit = 0xf;
377 }
378
379 out:
380
381 spin_lock(&dev->ctl_submit_lock);
382
383 dev->irq_urb_pending = 0;
384
385 if (likely(!dev->shutdown)) {
386
387 if (dev->buzzer_state)
388 dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
389 else
390 dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
391
392 dev->ctl_data->byte[HID_OR1] = dev->keybit;
393 dev->ctl_data->byte[HID_OR2] = dev->keybit;
394
395 dev->buzzer_pending = 0;
396 dev->ctl_urb_pending = 1;
397
398 error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
399 if (error)
400 err("%s: usb_submit_urb (urb_ctl) failed %d",
401 __func__, error);
402 }
403
404 spin_unlock(&dev->ctl_submit_lock);
405 }
406
407 static void cm109_urb_ctl_callback(struct urb *urb)
408 {
409 struct cm109_dev *dev = urb->context;
410 const int status = urb->status;
411 int error;
412
413 dev_dbg(&urb->dev->dev, "### URB CTL: [0x%02x 0x%02x 0x%02x 0x%02x]\n",
414 dev->ctl_data->byte[0],
415 dev->ctl_data->byte[1],
416 dev->ctl_data->byte[2],
417 dev->ctl_data->byte[3]);
418
419 if (status)
420 err("%s: urb status %d", __func__, status);
421
422 spin_lock(&dev->ctl_submit_lock);
423
424 dev->ctl_urb_pending = 0;
425
426 if (likely(!dev->shutdown)) {
427
428 if (dev->buzzer_pending) {
429 dev->buzzer_pending = 0;
430 dev->ctl_urb_pending = 1;
431 cm109_submit_buzz_toggle(dev);
432 } else if (likely(!dev->irq_urb_pending)) {
433 /* ask for key data */
434 dev->irq_urb_pending = 1;
435 error = usb_submit_urb(dev->urb_irq, GFP_ATOMIC);
436 if (error)
437 err("%s: usb_submit_urb (urb_irq) failed %d",
438 __func__, error);
439 }
440 }
441
442 spin_unlock(&dev->ctl_submit_lock);
443 }
444
445 static void cm109_toggle_buzzer_async(struct cm109_dev *dev)
446 {
447 unsigned long flags;
448
449 spin_lock_irqsave(&dev->ctl_submit_lock, flags);
450
451 if (dev->ctl_urb_pending) {
452 /* URB completion will resubmit */
453 dev->buzzer_pending = 1;
454 } else {
455 dev->ctl_urb_pending = 1;
456 cm109_submit_buzz_toggle(dev);
457 }
458
459 spin_unlock_irqrestore(&dev->ctl_submit_lock, flags);
460 }
461
462 static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on)
463 {
464 int error;
465
466 if (on)
467 dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
468 else
469 dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
470
471 error = usb_control_msg(dev->udev,
472 usb_sndctrlpipe(dev->udev, 0),
473 dev->ctl_req->bRequest,
474 dev->ctl_req->bRequestType,
475 le16_to_cpu(dev->ctl_req->wValue),
476 le16_to_cpu(dev->ctl_req->wIndex),
477 dev->ctl_data,
478 USB_PKT_LEN, USB_CTRL_SET_TIMEOUT);
479 if (error && error != EINTR)
480 err("%s: usb_control_msg() failed %d", __func__, error);
481 }
482
483 static void cm109_stop_traffic(struct cm109_dev *dev)
484 {
485 dev->shutdown = 1;
486 /*
487 * Make sure other CPUs see this
488 */
489 smp_wmb();
490
491 usb_kill_urb(dev->urb_ctl);
492 usb_kill_urb(dev->urb_irq);
493
494 cm109_toggle_buzzer_sync(dev, 0);
495
496 dev->shutdown = 0;
497 smp_wmb();
498 }
499
500 static void cm109_restore_state(struct cm109_dev *dev)
501 {
502 if (dev->open) {
503 /*
504 * Restore buzzer state.
505 * This will also kick regular URB submission
506 */
507 cm109_toggle_buzzer_async(dev);
508 }
509 }
510
511 /******************************************************************************
512 * input event interface
513 *****************************************************************************/
514
515 static int cm109_input_open(struct input_dev *idev)
516 {
517 struct cm109_dev *dev = input_get_drvdata(idev);
518 int error;
519
520 error = usb_autopm_get_interface(dev->intf);
521 if (error < 0) {
522 err("%s - cannot autoresume, result %d",
523 __func__, error);
524 return error;
525 }
526
527 mutex_lock(&dev->pm_mutex);
528
529 dev->buzzer_state = 0;
530 dev->key_code = -1; /* no keys pressed */
531 dev->keybit = 0xf;
532
533 /* issue INIT */
534 dev->ctl_data->byte[HID_OR0] = HID_OR_GPO_BUZ_SPDIF;
535 dev->ctl_data->byte[HID_OR1] = dev->keybit;
536 dev->ctl_data->byte[HID_OR2] = dev->keybit;
537 dev->ctl_data->byte[HID_OR3] = 0x00;
538
539 error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL);
540 if (error)
541 err("%s: usb_submit_urb (urb_ctl) failed %d", __func__, error);
542 else
543 dev->open = 1;
544
545 mutex_unlock(&dev->pm_mutex);
546
547 if (error)
548 usb_autopm_put_interface(dev->intf);
549
550 return error;
551 }
552
553 static void cm109_input_close(struct input_dev *idev)
554 {
555 struct cm109_dev *dev = input_get_drvdata(idev);
556
557 mutex_lock(&dev->pm_mutex);
558
559 /*
560 * Once we are here event delivery is stopped so we
561 * don't need to worry about someone starting buzzer
562 * again
563 */
564 cm109_stop_traffic(dev);
565 dev->open = 0;
566
567 mutex_unlock(&dev->pm_mutex);
568
569 usb_autopm_put_interface(dev->intf);
570 }
571
572 static int cm109_input_ev(struct input_dev *idev, unsigned int type,
573 unsigned int code, int value)
574 {
575 struct cm109_dev *dev = input_get_drvdata(idev);
576
577 dev_dbg(&dev->udev->dev,
578 "input_ev: type=%u code=%u value=%d\n", type, code, value);
579
580 if (type != EV_SND)
581 return -EINVAL;
582
583 switch (code) {
584 case SND_TONE:
585 case SND_BELL:
586 dev->buzzer_state = !!value;
587 if (!dev->resetting)
588 cm109_toggle_buzzer_async(dev);
589 return 0;
590
591 default:
592 return -EINVAL;
593 }
594 }
595
596
597 /******************************************************************************
598 * Linux interface and usb initialisation
599 *****************************************************************************/
600
601 struct driver_info {
602 char *name;
603 };
604
605 static const struct driver_info info_cm109 = {
606 .name = "CM109 USB driver",
607 };
608
609 enum {
610 VENDOR_ID = 0x0d8c, /* C-Media Electronics */
611 PRODUCT_ID_CM109 = 0x000e, /* CM109 defines range 0x0008 - 0x000f */
612 };
613
614 /* table of devices that work with this driver */
615 static const struct usb_device_id cm109_usb_table[] = {
616 {
617 .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
618 USB_DEVICE_ID_MATCH_INT_INFO,
619 .idVendor = VENDOR_ID,
620 .idProduct = PRODUCT_ID_CM109,
621 .bInterfaceClass = USB_CLASS_HID,
622 .bInterfaceSubClass = 0,
623 .bInterfaceProtocol = 0,
624 .driver_info = (kernel_ulong_t) &info_cm109
625 },
626 /* you can add more devices here with product ID 0x0008 - 0x000f */
627 { }
628 };
629
630 static void cm109_usb_cleanup(struct cm109_dev *dev)
631 {
632 if (dev->ctl_req)
633 usb_buffer_free(dev->udev, sizeof(*(dev->ctl_req)),
634 dev->ctl_req, dev->ctl_req_dma);
635 if (dev->ctl_data)
636 usb_buffer_free(dev->udev, USB_PKT_LEN,
637 dev->ctl_data, dev->ctl_dma);
638 if (dev->irq_data)
639 usb_buffer_free(dev->udev, USB_PKT_LEN,
640 dev->irq_data, dev->irq_dma);
641
642 usb_free_urb(dev->urb_irq); /* parameter validation in core/urb */
643 usb_free_urb(dev->urb_ctl); /* parameter validation in core/urb */
644 kfree(dev);
645 }
646
647 static void cm109_usb_disconnect(struct usb_interface *interface)
648 {
649 struct cm109_dev *dev = usb_get_intfdata(interface);
650
651 usb_set_intfdata(interface, NULL);
652 input_unregister_device(dev->idev);
653 cm109_usb_cleanup(dev);
654 }
655
656 static int cm109_usb_probe(struct usb_interface *intf,
657 const struct usb_device_id *id)
658 {
659 struct usb_device *udev = interface_to_usbdev(intf);
660 struct driver_info *nfo = (struct driver_info *)id->driver_info;
661 struct usb_host_interface *interface;
662 struct usb_endpoint_descriptor *endpoint;
663 struct cm109_dev *dev;
664 struct input_dev *input_dev = NULL;
665 int ret, pipe, i;
666 int error = -ENOMEM;
667
668 interface = intf->cur_altsetting;
669 endpoint = &interface->endpoint[0].desc;
670
671 if (!usb_endpoint_is_int_in(endpoint))
672 return -ENODEV;
673
674 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
675 if (!dev)
676 return -ENOMEM;
677
678 spin_lock_init(&dev->ctl_submit_lock);
679 mutex_init(&dev->pm_mutex);
680
681 dev->udev = udev;
682 dev->intf = intf;
683
684 dev->idev = input_dev = input_allocate_device();
685 if (!input_dev)
686 goto err_out;
687
688 /* allocate usb buffers */
689 dev->irq_data = usb_buffer_alloc(udev, USB_PKT_LEN,
690 GFP_KERNEL, &dev->irq_dma);
691 if (!dev->irq_data)
692 goto err_out;
693
694 dev->ctl_data = usb_buffer_alloc(udev, USB_PKT_LEN,
695 GFP_KERNEL, &dev->ctl_dma);
696 if (!dev->ctl_data)
697 goto err_out;
698
699 dev->ctl_req = usb_buffer_alloc(udev, sizeof(*(dev->ctl_req)),
700 GFP_KERNEL, &dev->ctl_req_dma);
701 if (!dev->ctl_req)
702 goto err_out;
703
704 /* allocate urb structures */
705 dev->urb_irq = usb_alloc_urb(0, GFP_KERNEL);
706 if (!dev->urb_irq)
707 goto err_out;
708
709 dev->urb_ctl = usb_alloc_urb(0, GFP_KERNEL);
710 if (!dev->urb_ctl)
711 goto err_out;
712
713 /* get a handle to the interrupt data pipe */
714 pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
715 ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
716 if (ret != USB_PKT_LEN)
717 err("invalid payload size %d, expected %d", ret, USB_PKT_LEN);
718
719 /* initialise irq urb */
720 usb_fill_int_urb(dev->urb_irq, udev, pipe, dev->irq_data,
721 USB_PKT_LEN,
722 cm109_urb_irq_callback, dev, endpoint->bInterval);
723 dev->urb_irq->transfer_dma = dev->irq_dma;
724 dev->urb_irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
725 dev->urb_irq->dev = udev;
726
727 /* initialise ctl urb */
728 dev->ctl_req->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE |
729 USB_DIR_OUT;
730 dev->ctl_req->bRequest = USB_REQ_SET_CONFIGURATION;
731 dev->ctl_req->wValue = cpu_to_le16(0x200);
732 dev->ctl_req->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
733 dev->ctl_req->wLength = cpu_to_le16(USB_PKT_LEN);
734
735 usb_fill_control_urb(dev->urb_ctl, udev, usb_sndctrlpipe(udev, 0),
736 (void *)dev->ctl_req, dev->ctl_data, USB_PKT_LEN,
737 cm109_urb_ctl_callback, dev);
738 dev->urb_ctl->setup_dma = dev->ctl_req_dma;
739 dev->urb_ctl->transfer_dma = dev->ctl_dma;
740 dev->urb_ctl->transfer_flags |= URB_NO_SETUP_DMA_MAP |
741 URB_NO_TRANSFER_DMA_MAP;
742 dev->urb_ctl->dev = udev;
743
744 /* find out the physical bus location */
745 usb_make_path(udev, dev->phys, sizeof(dev->phys));
746 strlcat(dev->phys, "/input0", sizeof(dev->phys));
747
748 /* register settings for the input device */
749 input_dev->name = nfo->name;
750 input_dev->phys = dev->phys;
751 usb_to_input_id(udev, &input_dev->id);
752 input_dev->dev.parent = &intf->dev;
753
754 input_set_drvdata(input_dev, dev);
755 input_dev->open = cm109_input_open;
756 input_dev->close = cm109_input_close;
757 input_dev->event = cm109_input_ev;
758
759 input_dev->keycode = dev->keymap;
760 input_dev->keycodesize = sizeof(unsigned char);
761 input_dev->keycodemax = ARRAY_SIZE(dev->keymap);
762
763 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_SND);
764 input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
765
766 /* register available key events */
767 for (i = 0; i < KEYMAP_SIZE; i++) {
768 unsigned short k = keymap(i);
769 dev->keymap[i] = k;
770 __set_bit(k, input_dev->keybit);
771 }
772 __clear_bit(KEY_RESERVED, input_dev->keybit);
773
774 error = input_register_device(dev->idev);
775 if (error)
776 goto err_out;
777
778 usb_set_intfdata(intf, dev);
779
780 return 0;
781
782 err_out:
783 input_free_device(input_dev);
784 cm109_usb_cleanup(dev);
785 return error;
786 }
787
788 static int cm109_usb_suspend(struct usb_interface *intf, pm_message_t message)
789 {
790 struct cm109_dev *dev = usb_get_intfdata(intf);
791
792 dev_info(&intf->dev, "cm109: usb_suspend (event=%d)\n", message.event);
793
794 mutex_lock(&dev->pm_mutex);
795 cm109_stop_traffic(dev);
796 mutex_unlock(&dev->pm_mutex);
797
798 return 0;
799 }
800
801 static int cm109_usb_resume(struct usb_interface *intf)
802 {
803 struct cm109_dev *dev = usb_get_intfdata(intf);
804
805 dev_info(&intf->dev, "cm109: usb_resume\n");
806
807 mutex_lock(&dev->pm_mutex);
808 cm109_restore_state(dev);
809 mutex_unlock(&dev->pm_mutex);
810
811 return 0;
812 }
813
814 static int cm109_usb_pre_reset(struct usb_interface *intf)
815 {
816 struct cm109_dev *dev = usb_get_intfdata(intf);
817
818 mutex_lock(&dev->pm_mutex);
819
820 /*
821 * Make sure input events don't try to toggle buzzer
822 * while we are resetting
823 */
824 dev->resetting = 1;
825 smp_wmb();
826
827 cm109_stop_traffic(dev);
828
829 return 0;
830 }
831
832 static int cm109_usb_post_reset(struct usb_interface *intf)
833 {
834 struct cm109_dev *dev = usb_get_intfdata(intf);
835
836 dev->resetting = 0;
837 smp_wmb();
838
839 cm109_restore_state(dev);
840
841 mutex_unlock(&dev->pm_mutex);
842
843 return 0;
844 }
845
846 static struct usb_driver cm109_driver = {
847 .name = "cm109",
848 .probe = cm109_usb_probe,
849 .disconnect = cm109_usb_disconnect,
850 .suspend = cm109_usb_suspend,
851 .resume = cm109_usb_resume,
852 .reset_resume = cm109_usb_resume,
853 .pre_reset = cm109_usb_pre_reset,
854 .post_reset = cm109_usb_post_reset,
855 .id_table = cm109_usb_table,
856 .supports_autosuspend = 1,
857 };
858
859 static int __init cm109_select_keymap(void)
860 {
861 /* Load the phone keymap */
862 if (!strcasecmp(phone, "kip1000")) {
863 keymap = keymap_kip1000;
864 printk(KERN_INFO KBUILD_MODNAME ": "
865 "Keymap for Komunikate KIP1000 phone loaded\n");
866 } else if (!strcasecmp(phone, "gtalk")) {
867 keymap = keymap_gtalk;
868 printk(KERN_INFO KBUILD_MODNAME ": "
869 "Keymap for Genius G-talk phone loaded\n");
870 } else if (!strcasecmp(phone, "usbph01")) {
871 keymap = keymap_usbph01;
872 printk(KERN_INFO KBUILD_MODNAME ": "
873 "Keymap for Allied-Telesis Corega USBPH01 phone loaded\n");
874 } else if (!strcasecmp(phone, "atcom")) {
875 keymap = keymap_atcom;
876 printk(KERN_INFO KBUILD_MODNAME ": "
877 "Keymap for ATCom AU-100 phone loaded\n");
878 } else {
879 printk(KERN_ERR KBUILD_MODNAME ": "
880 "Unsupported phone: %s\n", phone);
881 return -EINVAL;
882 }
883
884 return 0;
885 }
886
887 static int __init cm109_init(void)
888 {
889 int err;
890
891 err = cm109_select_keymap();
892 if (err)
893 return err;
894
895 err = usb_register(&cm109_driver);
896 if (err)
897 return err;
898
899 printk(KERN_INFO KBUILD_MODNAME ": "
900 DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR "\n");
901
902 return 0;
903 }
904
905 static void __exit cm109_exit(void)
906 {
907 usb_deregister(&cm109_driver);
908 }
909
910 module_init(cm109_init);
911 module_exit(cm109_exit);
912
913 MODULE_DEVICE_TABLE(usb, cm109_usb_table);
914
915 MODULE_AUTHOR(DRIVER_AUTHOR);
916 MODULE_DESCRIPTION(DRIVER_DESC);
917 MODULE_LICENSE("GPL");
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