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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / usb / input / ati_remote.c
blob860df26323b163ede689f4b259ff9dcef19e405c
1 /*
2 * USB ATI Remote support
3 *
4 * Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net>
5 * Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev
6 *
7 * This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including
8 * porting to the 2.6 kernel interfaces, along with other modification
9 * to better match the style of the existing usb/input drivers. However, the
10 * protocol and hardware handling is essentially unchanged from 2.1.1.
11 *
12 * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by
13 * Vojtech Pavlik.
14 *
15 * Changes:
16 *
17 * Feb 2004: Torrey Hoffman <thoffman@arnor.net>
18 * Version 2.2.0
19 * Jun 2004: Torrey Hoffman <thoffman@arnor.net>
20 * Version 2.2.1
21 * Added key repeat support contributed by:
22 * Vincent Vanackere <vanackere@lif.univ-mrs.fr>
23 * Added support for the "Lola" remote contributed by:
24 * Seth Cohn <sethcohn@yahoo.com>
25 *
26 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
27 *
28 * This program is free software; you can redistribute it and/or modify
29 * it under the terms of the GNU General Public License as published by
30 * the Free Software Foundation; either version 2 of the License, or
31 * (at your option) any later version.
32 *
33 * This program is distributed in the hope that it will be useful,
34 * but WITHOUT ANY WARRANTY; without even the implied warranty of
35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
36 * GNU General Public License for more details.
37 *
38 * You should have received a copy of the GNU General Public License
39 * along with this program; if not, write to the Free Software
40 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
41 *
42 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
43 *
44 * Hardware & software notes
45 *
46 * These remote controls are distributed by ATI as part of their
47 * "All-In-Wonder" video card packages. The receiver self-identifies as a
48 * "USB Receiver" with manufacturer "X10 Wireless Technology Inc".
49 *
50 * The "Lola" remote is available from X10. See:
51 * http://www.x10.com/products/lola_sg1.htm
52 * The Lola is similar to the ATI remote but has no mouse support, and slightly
53 * different keys.
54 *
55 * It is possible to use multiple receivers and remotes on multiple computers
56 * simultaneously by configuring them to use specific channels.
57 *
58 * The RF protocol used by the remote supports 16 distinct channels, 1 to 16.
59 * Actually, it may even support more, at least in some revisions of the
60 * hardware.
61 *
62 * Each remote can be configured to transmit on one channel as follows:
63 * - Press and hold the "hand icon" button.
64 * - When the red LED starts to blink, let go of the "hand icon" button.
65 * - When it stops blinking, input the channel code as two digits, from 01
66 * to 16, and press the hand icon again.
67 *
68 * The timing can be a little tricky. Try loading the module with debug=1
69 * to have the kernel print out messages about the remote control number
70 * and mask. Note: debugging prints remote numbers as zero-based hexadecimal.
71 *
72 * The driver has a "channel_mask" parameter. This bitmask specifies which
73 * channels will be ignored by the module. To mask out channels, just add
74 * all the 2^channel_number values together.
75 *
76 * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote
77 * ignore signals coming from remote controls transmitting on channel 4, but
78 * accept all other channels.
79 *
80 * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be
81 * ignored.
82 *
83 * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this
84 * parameter are unused.
85 *
86 */
87
88 #include <linux/config.h>
89 #include <linux/kernel.h>
90 #include <linux/errno.h>
91 #include <linux/init.h>
92 #include <linux/slab.h>
93 #include <linux/module.h>
94 #include <linux/moduleparam.h>
95 #include <linux/input.h>
96 #include <linux/usb.h>
97 #include <linux/wait.h>
98
99 /*
100 * Module and Version Information, Module Parameters
101 */
102
103 #define ATI_REMOTE_VENDOR_ID 0x0bc7
104 #define ATI_REMOTE_PRODUCT_ID 0x004
105 #define LOLA_REMOTE_PRODUCT_ID 0x002
106 #define MEDION_REMOTE_PRODUCT_ID 0x006
107
108 #define DRIVER_VERSION "2.2.1"
109 #define DRIVER_AUTHOR "Torrey Hoffman <thoffman@arnor.net>"
110 #define DRIVER_DESC "ATI/X10 RF USB Remote Control"
111
112 #define NAME_BUFSIZE 80 /* size of product name, path buffers */
113 #define DATA_BUFSIZE 63 /* size of URB data buffers */
114 #define ATI_INPUTNUM 1 /* Which input device to register as */
115
116 static unsigned long channel_mask = 0;
117 module_param(channel_mask, ulong, 0444);
118 MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");
119
120 static int debug = 0;
121 module_param(debug, int, 0444);
122 MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
123
124 #define dbginfo(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)
125 #undef err
126 #define err(format, arg...) printk(KERN_ERR format , ## arg)
127
128 static struct usb_device_id ati_remote_table[] = {
129 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID) },
130 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID) },
131 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID) },
132 {} /* Terminating entry */
133 };
134
135 MODULE_DEVICE_TABLE(usb, ati_remote_table);
136
137 /* Get hi and low bytes of a 16-bits int */
138 #define HI(a) ((unsigned char)((a) >> 8))
139 #define LO(a) ((unsigned char)((a) & 0xff))
140
141 #define SEND_FLAG_IN_PROGRESS 1
142 #define SEND_FLAG_COMPLETE 2
143
144 /* Device initialization strings */
145 static char init1[] = { 0x01, 0x00, 0x20, 0x14 };
146 static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };
147
148 /* Acceleration curve for directional control pad */
149 static char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
150
151 /* Duplicate event filtering time.
152 * Sequential, identical KIND_FILTERED inputs with less than
153 * FILTER_TIME jiffies between them are considered as repeat
154 * events. The hardware generates 5 events for the first keypress
155 * and we have to take this into account for an accurate repeat
156 * behaviour.
157 * (HZ / 20) == 50 ms and works well for me.
158 */
159 #define FILTER_TIME (HZ / 20)
160
161 static DECLARE_MUTEX(disconnect_sem);
162
163 struct ati_remote {
164 struct input_dev idev;
165 struct usb_device *udev;
166 struct usb_interface *interface;
167
168 struct urb *irq_urb;
169 struct urb *out_urb;
170 struct usb_endpoint_descriptor *endpoint_in;
171 struct usb_endpoint_descriptor *endpoint_out;
172 unsigned char *inbuf;
173 unsigned char *outbuf;
174 dma_addr_t inbuf_dma;
175 dma_addr_t outbuf_dma;
176
177 int open; /* open counter */
178
179 unsigned char old_data[2]; /* Detect duplicate events */
180 unsigned long old_jiffies;
181 unsigned long acc_jiffies; /* handle acceleration */
182 unsigned int repeat_count;
183
184 char name[NAME_BUFSIZE];
185 char phys[NAME_BUFSIZE];
186
187 wait_queue_head_t wait;
188 int send_flags;
189 };
190
191 /* "Kinds" of messages sent from the hardware to the driver. */
192 #define KIND_END 0
193 #define KIND_LITERAL 1 /* Simply pass to input system */
194 #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */
195 #define KIND_LU 3 /* Directional keypad diagonals - left up, */
196 #define KIND_RU 4 /* right up, */
197 #define KIND_LD 5 /* left down, */
198 #define KIND_RD 6 /* right down */
199 #define KIND_ACCEL 7 /* Directional keypad - left, right, up, down.*/
200
201 /* Translation table from hardware messages to input events. */
202 static struct
203 {
204 short kind;
205 unsigned char data1, data2;
206 int type;
207 unsigned int code;
208 int value;
209 } ati_remote_tbl[] =
210 {
211 /* Directional control pad axes */
212 {KIND_ACCEL, 0x35, 0x70, EV_REL, REL_X, -1}, /* left */
213 {KIND_ACCEL, 0x36, 0x71, EV_REL, REL_X, 1}, /* right */
214 {KIND_ACCEL, 0x37, 0x72, EV_REL, REL_Y, -1}, /* up */
215 {KIND_ACCEL, 0x38, 0x73, EV_REL, REL_Y, 1}, /* down */
216 /* Directional control pad diagonals */
217 {KIND_LU, 0x39, 0x74, EV_REL, 0, 0}, /* left up */
218 {KIND_RU, 0x3a, 0x75, EV_REL, 0, 0}, /* right up */
219 {KIND_LD, 0x3c, 0x77, EV_REL, 0, 0}, /* left down */
220 {KIND_RD, 0x3b, 0x76, EV_REL, 0, 0}, /* right down */
221
222 /* "Mouse button" buttons */
223 {KIND_LITERAL, 0x3d, 0x78, EV_KEY, BTN_LEFT, 1}, /* left btn down */
224 {KIND_LITERAL, 0x3e, 0x79, EV_KEY, BTN_LEFT, 0}, /* left btn up */
225 {KIND_LITERAL, 0x41, 0x7c, EV_KEY, BTN_RIGHT, 1},/* right btn down */
226 {KIND_LITERAL, 0x42, 0x7d, EV_KEY, BTN_RIGHT, 0},/* right btn up */
227
228 /* Artificial "doubleclick" events are generated by the hardware.
229 * They are mapped to the "side" and "extra" mouse buttons here. */
230 {KIND_FILTERED, 0x3f, 0x7a, EV_KEY, BTN_SIDE, 1}, /* left dblclick */
231 {KIND_FILTERED, 0x43, 0x7e, EV_KEY, BTN_EXTRA, 1},/* right dblclick */
232
233 /* keyboard. */
234 {KIND_FILTERED, 0xd2, 0x0d, EV_KEY, KEY_1, 1},
235 {KIND_FILTERED, 0xd3, 0x0e, EV_KEY, KEY_2, 1},
236 {KIND_FILTERED, 0xd4, 0x0f, EV_KEY, KEY_3, 1},
237 {KIND_FILTERED, 0xd5, 0x10, EV_KEY, KEY_4, 1},
238 {KIND_FILTERED, 0xd6, 0x11, EV_KEY, KEY_5, 1},
239 {KIND_FILTERED, 0xd7, 0x12, EV_KEY, KEY_6, 1},
240 {KIND_FILTERED, 0xd8, 0x13, EV_KEY, KEY_7, 1},
241 {KIND_FILTERED, 0xd9, 0x14, EV_KEY, KEY_8, 1},
242 {KIND_FILTERED, 0xda, 0x15, EV_KEY, KEY_9, 1},
243 {KIND_FILTERED, 0xdc, 0x17, EV_KEY, KEY_0, 1},
244 {KIND_FILTERED, 0xc5, 0x00, EV_KEY, KEY_A, 1},
245 {KIND_FILTERED, 0xc6, 0x01, EV_KEY, KEY_B, 1},
246 {KIND_FILTERED, 0xde, 0x19, EV_KEY, KEY_C, 1},
247 {KIND_FILTERED, 0xe0, 0x1b, EV_KEY, KEY_D, 1},
248 {KIND_FILTERED, 0xe6, 0x21, EV_KEY, KEY_E, 1},
249 {KIND_FILTERED, 0xe8, 0x23, EV_KEY, KEY_F, 1},
250
251 /* "special" keys */
252 {KIND_FILTERED, 0xdd, 0x18, EV_KEY, KEY_KPENTER, 1}, /* "check" */
253 {KIND_FILTERED, 0xdb, 0x16, EV_KEY, KEY_MENU, 1}, /* "menu" */
254 {KIND_FILTERED, 0xc7, 0x02, EV_KEY, KEY_POWER, 1}, /* Power */
255 {KIND_FILTERED, 0xc8, 0x03, EV_KEY, KEY_TV, 1}, /* TV */
256 {KIND_FILTERED, 0xc9, 0x04, EV_KEY, KEY_DVD, 1}, /* DVD */
257 {KIND_FILTERED, 0xca, 0x05, EV_KEY, KEY_WWW, 1}, /* WEB */
258 {KIND_FILTERED, 0xcb, 0x06, EV_KEY, KEY_BOOKMARKS, 1}, /* "book" */
259 {KIND_FILTERED, 0xcc, 0x07, EV_KEY, KEY_EDIT, 1}, /* "hand" */
260 {KIND_FILTERED, 0xe1, 0x1c, EV_KEY, KEY_COFFEE, 1}, /* "timer" */
261 {KIND_FILTERED, 0xe5, 0x20, EV_KEY, KEY_FRONT, 1}, /* "max" */
262 {KIND_FILTERED, 0xe2, 0x1d, EV_KEY, KEY_LEFT, 1}, /* left */
263 {KIND_FILTERED, 0xe4, 0x1f, EV_KEY, KEY_RIGHT, 1}, /* right */
264 {KIND_FILTERED, 0xe7, 0x22, EV_KEY, KEY_DOWN, 1}, /* down */
265 {KIND_FILTERED, 0xdf, 0x1a, EV_KEY, KEY_UP, 1}, /* up */
266 {KIND_FILTERED, 0xe3, 0x1e, EV_KEY, KEY_OK, 1}, /* "OK" */
267 {KIND_FILTERED, 0xce, 0x09, EV_KEY, KEY_VOLUMEDOWN, 1}, /* VOL + */
268 {KIND_FILTERED, 0xcd, 0x08, EV_KEY, KEY_VOLUMEUP, 1}, /* VOL - */
269 {KIND_FILTERED, 0xcf, 0x0a, EV_KEY, KEY_MUTE, 1}, /* MUTE */
270 {KIND_FILTERED, 0xd0, 0x0b, EV_KEY, KEY_CHANNELUP, 1}, /* CH + */
271 {KIND_FILTERED, 0xd1, 0x0c, EV_KEY, KEY_CHANNELDOWN, 1},/* CH - */
272 {KIND_FILTERED, 0xec, 0x27, EV_KEY, KEY_RECORD, 1}, /* ( o) red */
273 {KIND_FILTERED, 0xea, 0x25, EV_KEY, KEY_PLAY, 1}, /* ( >) */
274 {KIND_FILTERED, 0xe9, 0x24, EV_KEY, KEY_REWIND, 1}, /* (<<) */
275 {KIND_FILTERED, 0xeb, 0x26, EV_KEY, KEY_FORWARD, 1}, /* (>>) */
276 {KIND_FILTERED, 0xed, 0x28, EV_KEY, KEY_STOP, 1}, /* ([]) */
277 {KIND_FILTERED, 0xee, 0x29, EV_KEY, KEY_PAUSE, 1}, /* ('') */
278 {KIND_FILTERED, 0xf0, 0x2b, EV_KEY, KEY_PREVIOUS, 1}, /* (<-) */
279 {KIND_FILTERED, 0xef, 0x2a, EV_KEY, KEY_NEXT, 1}, /* (>+) */
280 {KIND_FILTERED, 0xf2, 0x2D, EV_KEY, KEY_INFO, 1}, /* PLAYING */
281 {KIND_FILTERED, 0xf3, 0x2E, EV_KEY, KEY_HOME, 1}, /* TOP */
282 {KIND_FILTERED, 0xf4, 0x2F, EV_KEY, KEY_END, 1}, /* END */
283 {KIND_FILTERED, 0xf5, 0x30, EV_KEY, KEY_SELECT, 1}, /* SELECT */
284
285 {KIND_END, 0x00, 0x00, EV_MAX + 1, 0, 0}
286 };
287
288 /* Local function prototypes */
289 static void ati_remote_dump (unsigned char *data, unsigned int actual_length);
290 static void ati_remote_delete (struct ati_remote *dev);
291 static int ati_remote_open (struct input_dev *inputdev);
292 static void ati_remote_close (struct input_dev *inputdev);
293 static int ati_remote_sendpacket (struct ati_remote *ati_remote, u16 cmd, unsigned char *data);
294 static void ati_remote_irq_out (struct urb *urb, struct pt_regs *regs);
295 static void ati_remote_irq_in (struct urb *urb, struct pt_regs *regs);
296 static void ati_remote_input_report (struct urb *urb, struct pt_regs *regs);
297 static int ati_remote_initialize (struct ati_remote *ati_remote);
298 static int ati_remote_probe (struct usb_interface *interface, const struct usb_device_id *id);
299 static void ati_remote_disconnect (struct usb_interface *interface);
300
301 /* usb specific object to register with the usb subsystem */
302 static struct usb_driver ati_remote_driver = {
303 .owner = THIS_MODULE,
304 .name = "ati_remote",
305 .probe = ati_remote_probe,
306 .disconnect = ati_remote_disconnect,
307 .id_table = ati_remote_table,
308 };
309
310 /*
311 * ati_remote_dump_input
312 */
313 static void ati_remote_dump(unsigned char *data, unsigned int len)
314 {
315 if ((len == 1) && (data[0] != (unsigned char)0xff) && (data[0] != 0x00))
316 warn("Weird byte 0x%02x", data[0]);
317 else if (len == 4)
318 warn("Weird key %02x %02x %02x %02x",
319 data[0], data[1], data[2], data[3]);
320 else
321 warn("Weird data, len=%d %02x %02x %02x %02x %02x %02x ...",
322 len, data[0], data[1], data[2], data[3], data[4], data[5]);
323 }
324
325 /*
326 * ati_remote_open
327 */
328 static int ati_remote_open(struct input_dev *inputdev)
329 {
330 struct ati_remote *ati_remote = inputdev->private;
331 int retval = 0;
332
333 down(&disconnect_sem);
334
335 if (ati_remote->open++)
336 goto exit;
337
338 /* On first open, submit the read urb which was set up previously. */
339 ati_remote->irq_urb->dev = ati_remote->udev;
340 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) {
341 dev_err(&ati_remote->interface->dev,
342 "%s: usb_submit_urb failed!\n", __FUNCTION__);
343 ati_remote->open--;
344 retval = -EIO;
345 }
346
347 exit:
348 up(&disconnect_sem);
349 return retval;
350 }
351
352 /*
353 * ati_remote_close
354 */
355 static void ati_remote_close(struct input_dev *inputdev)
356 {
357 struct ati_remote *ati_remote = inputdev->private;
358
359 if (!--ati_remote->open)
360 usb_kill_urb(ati_remote->irq_urb);
361 }
362
363 /*
364 * ati_remote_irq_out
365 */
366 static void ati_remote_irq_out(struct urb *urb, struct pt_regs *regs)
367 {
368 struct ati_remote *ati_remote = urb->context;
369
370 if (urb->status) {
371 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n",
372 __FUNCTION__, urb->status);
373 return;
374 }
375
376 ati_remote->send_flags |= SEND_FLAG_COMPLETE;
377 wmb();
378 wake_up(&ati_remote->wait);
379 }
380
381 /*
382 * ati_remote_sendpacket
383 *
384 * Used to send device initialization strings
385 */
386 static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, unsigned char *data)
387 {
388 int retval = 0;
389
390 /* Set up out_urb */
391 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd));
392 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd);
393
394 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1;
395 ati_remote->out_urb->dev = ati_remote->udev;
396 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS;
397
398 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC);
399 if (retval) {
400 dev_dbg(&ati_remote->interface->dev,
401 "sendpacket: usb_submit_urb failed: %d\n", retval);
402 return retval;
403 }
404
405 wait_event_timeout(ati_remote->wait,
406 ((ati_remote->out_urb->status != -EINPROGRESS) ||
407 (ati_remote->send_flags & SEND_FLAG_COMPLETE)),
408 HZ);
409 usb_kill_urb(ati_remote->out_urb);
410
411 return retval;
412 }
413
414 /*
415 * ati_remote_event_lookup
416 */
417 static int ati_remote_event_lookup(int rem, unsigned char d1, unsigned char d2)
418 {
419 int i;
420
421 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {
422 /*
423 * Decide if the table entry matches the remote input.
424 */
425 if ((((ati_remote_tbl[i].data1 & 0x0f) == (d1 & 0x0f))) &&
426 ((((ati_remote_tbl[i].data1 >> 4) -
427 (d1 >> 4) + rem) & 0x0f) == 0x0f) &&
428 (ati_remote_tbl[i].data2 == d2))
429 return i;
430
431 }
432 return -1;
433 }
434
435 /*
436 * ati_remote_report_input
437 */
438 static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs)
439 {
440 struct ati_remote *ati_remote = urb->context;
441 unsigned char *data= ati_remote->inbuf;
442 struct input_dev *dev = &ati_remote->idev;
443 int index, acc;
444 int remote_num;
445
446 /* Deal with strange looking inputs */
447 if ( (urb->actual_length != 4) || (data[0] != 0x14) ||
448 ((data[3] & 0x0f) != 0x00) ) {
449 ati_remote_dump(data, urb->actual_length);
450 return;
451 }
452
453 /* Mask unwanted remote channels. */
454 /* note: remote_num is 0-based, channel 1 on remote == 0 here */
455 remote_num = (data[3] >> 4) & 0x0f;
456 if (channel_mask & (1 << (remote_num + 1))) {
457 dbginfo(&ati_remote->interface->dev,
458 "Masked input from channel 0x%02x: data %02x,%02x, mask= 0x%02lx\n",
459 remote_num, data[1], data[2], channel_mask);
460 return;
461 }
462
463 /* Look up event code index in translation table */
464 index = ati_remote_event_lookup(remote_num, data[1], data[2]);
465 if (index < 0) {
466 dev_warn(&ati_remote->interface->dev,
467 "Unknown input from channel 0x%02x: data %02x,%02x\n",
468 remote_num, data[1], data[2]);
469 return;
470 }
471 dbginfo(&ati_remote->interface->dev,
472 "channel 0x%02x; data %02x,%02x; index %d; keycode %d\n",
473 remote_num, data[1], data[2], index, ati_remote_tbl[index].code);
474
475 if (ati_remote_tbl[index].kind == KIND_LITERAL) {
476 input_regs(dev, regs);
477 input_event(dev, ati_remote_tbl[index].type,
478 ati_remote_tbl[index].code,
479 ati_remote_tbl[index].value);
480 input_sync(dev);
481
482 ati_remote->old_jiffies = jiffies;
483 return;
484 }
485
486 if (ati_remote_tbl[index].kind == KIND_FILTERED) {
487 /* Filter duplicate events which happen "too close" together. */
488 if ((ati_remote->old_data[0] == data[1]) &&
489 (ati_remote->old_data[1] == data[2]) &&
490 ((ati_remote->old_jiffies + FILTER_TIME) > jiffies)) {
491 ati_remote->repeat_count++;
492 }
493 else {
494 ati_remote->repeat_count = 0;
495 }
496
497 ati_remote->old_data[0] = data[1];
498 ati_remote->old_data[1] = data[2];
499 ati_remote->old_jiffies = jiffies;
500
501 if ((ati_remote->repeat_count > 0)
502 && (ati_remote->repeat_count < 5))
503 return;
504
505
506 input_regs(dev, regs);
507 input_event(dev, ati_remote_tbl[index].type,
508 ati_remote_tbl[index].code, 1);
509 input_event(dev, ati_remote_tbl[index].type,
510 ati_remote_tbl[index].code, 0);
511 input_sync(dev);
512
513 return;
514 }
515
516 /*
517 * Other event kinds are from the directional control pad, and have an
518 * acceleration factor applied to them. Without this acceleration, the
519 * control pad is mostly unusable.
520 *
521 * If elapsed time since last event is > 1/4 second, user "stopped",
522 * so reset acceleration. Otherwise, user is probably holding the control
523 * pad down, so we increase acceleration, ramping up over two seconds to
524 * a maximum speed. The acceleration curve is #defined above.
525 */
526 if ((jiffies - ati_remote->old_jiffies) > (HZ >> 2)) {
527 acc = 1;
528 ati_remote->acc_jiffies = jiffies;
529 }
530 else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 3)) acc = accel[0];
531 else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 2)) acc = accel[1];
532 else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 1)) acc = accel[2];
533 else if ((jiffies - ati_remote->acc_jiffies) < HZ ) acc = accel[3];
534 else if ((jiffies - ati_remote->acc_jiffies) < HZ+(HZ>>1)) acc = accel[4];
535 else if ((jiffies - ati_remote->acc_jiffies) < (HZ << 1)) acc = accel[5];
536 else acc = accel[6];
537
538 input_regs(dev, regs);
539 switch (ati_remote_tbl[index].kind) {
540 case KIND_ACCEL:
541 input_event(dev, ati_remote_tbl[index].type,
542 ati_remote_tbl[index].code,
543 ati_remote_tbl[index].value * acc);
544 break;
545 case KIND_LU:
546 input_report_rel(dev, REL_X, -acc);
547 input_report_rel(dev, REL_Y, -acc);
548 break;
549 case KIND_RU:
550 input_report_rel(dev, REL_X, acc);
551 input_report_rel(dev, REL_Y, -acc);
552 break;
553 case KIND_LD:
554 input_report_rel(dev, REL_X, -acc);
555 input_report_rel(dev, REL_Y, acc);
556 break;
557 case KIND_RD:
558 input_report_rel(dev, REL_X, acc);
559 input_report_rel(dev, REL_Y, acc);
560 break;
561 default:
562 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n",
563 ati_remote_tbl[index].kind);
564 }
565 input_sync(dev);
566
567 ati_remote->old_jiffies = jiffies;
568 ati_remote->old_data[0] = data[1];
569 ati_remote->old_data[1] = data[2];
570 }
571
572 /*
573 * ati_remote_irq_in
574 */
575 static void ati_remote_irq_in(struct urb *urb, struct pt_regs *regs)
576 {
577 struct ati_remote *ati_remote = urb->context;
578 int retval;
579
580 switch (urb->status) {
581 case 0: /* success */
582 ati_remote_input_report(urb, regs);
583 break;
584 case -ECONNRESET: /* unlink */
585 case -ENOENT:
586 case -ESHUTDOWN:
587 dev_dbg(&ati_remote->interface->dev, "%s: urb error status, unlink? \n",
588 __FUNCTION__);
589 return;
590 default: /* error */
591 dev_dbg(&ati_remote->interface->dev, "%s: Nonzero urb status %d\n",
592 __FUNCTION__, urb->status);
593 }
594
595 retval = usb_submit_urb(urb, SLAB_ATOMIC);
596 if (retval)
597 dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n",
598 __FUNCTION__, retval);
599 }
600
601 /*
602 * ati_remote_delete
603 */
604 static void ati_remote_delete(struct ati_remote *ati_remote)
605 {
606 if (!ati_remote) return;
607
608 if (ati_remote->irq_urb)
609 usb_kill_urb(ati_remote->irq_urb);
610
611 if (ati_remote->out_urb)
612 usb_kill_urb(ati_remote->out_urb);
613
614 input_unregister_device(&ati_remote->idev);
615
616 if (ati_remote->inbuf)
617 usb_buffer_free(ati_remote->udev, DATA_BUFSIZE,
618 ati_remote->inbuf, ati_remote->inbuf_dma);
619
620 if (ati_remote->outbuf)
621 usb_buffer_free(ati_remote->udev, DATA_BUFSIZE,
622 ati_remote->outbuf, ati_remote->outbuf_dma);
623
624 if (ati_remote->irq_urb)
625 usb_free_urb(ati_remote->irq_urb);
626
627 if (ati_remote->out_urb)
628 usb_free_urb(ati_remote->out_urb);
629
630 kfree(ati_remote);
631 }
632
633 static void ati_remote_input_init(struct ati_remote *ati_remote)
634 {
635 struct input_dev *idev = &(ati_remote->idev);
636 int i;
637
638 idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
639 idev->keybit[LONG(BTN_MOUSE)] = ( BIT(BTN_LEFT) | BIT(BTN_RIGHT) |
640 BIT(BTN_SIDE) | BIT(BTN_EXTRA) );
641 idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
642 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++)
643 if (ati_remote_tbl[i].type == EV_KEY)
644 set_bit(ati_remote_tbl[i].code, idev->keybit);
645
646 idev->private = ati_remote;
647 idev->open = ati_remote_open;
648 idev->close = ati_remote_close;
649
650 idev->name = ati_remote->name;
651 idev->phys = ati_remote->phys;
652
653 idev->id.bustype = BUS_USB;
654 idev->id.vendor = le16_to_cpu(ati_remote->udev->descriptor.idVendor);
655 idev->id.product = le16_to_cpu(ati_remote->udev->descriptor.idProduct);
656 idev->id.version = le16_to_cpu(ati_remote->udev->descriptor.bcdDevice);
657 }
658
659 static int ati_remote_initialize(struct ati_remote *ati_remote)
660 {
661 struct usb_device *udev = ati_remote->udev;
662 int pipe, maxp;
663
664 init_waitqueue_head(&ati_remote->wait);
665
666 /* Set up irq_urb */
667 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
668 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
669 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
670
671 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
672 maxp, ati_remote_irq_in, ati_remote,
673 ati_remote->endpoint_in->bInterval);
674 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma;
675 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
676
677 /* Set up out_urb */
678 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
679 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
680 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
681
682 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
683 maxp, ati_remote_irq_out, ati_remote,
684 ati_remote->endpoint_out->bInterval);
685 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma;
686 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
687
688 /* send initialization strings */
689 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) ||
690 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) {
691 dev_err(&ati_remote->interface->dev,
692 "Initializing ati_remote hardware failed.\n");
693 return 1;
694 }
695
696 return 0;
697 }
698
699 /*
700 * ati_remote_probe
701 */
702 static int ati_remote_probe(struct usb_interface *interface, const struct usb_device_id *id)
703 {
704 struct usb_device *udev = interface_to_usbdev(interface);
705 struct ati_remote *ati_remote = NULL;
706 struct usb_host_interface *iface_host;
707 int retval = -ENOMEM;
708 char path[64];
709
710 /* Allocate and clear an ati_remote struct */
711 if (!(ati_remote = kmalloc(sizeof (struct ati_remote), GFP_KERNEL)))
712 return -ENOMEM;
713 memset(ati_remote, 0x00, sizeof (struct ati_remote));
714
715 iface_host = interface->cur_altsetting;
716 if (iface_host->desc.bNumEndpoints != 2) {
717 err("%s: Unexpected desc.bNumEndpoints\n", __FUNCTION__);
718 retval = -ENODEV;
719 goto error;
720 }
721
722 ati_remote->endpoint_in = &(iface_host->endpoint[0].desc);
723 ati_remote->endpoint_out = &(iface_host->endpoint[1].desc);
724 ati_remote->udev = udev;
725 ati_remote->interface = interface;
726
727 if (!(ati_remote->endpoint_in->bEndpointAddress & 0x80)) {
728 err("%s: Unexpected endpoint_in->bEndpointAddress\n", __FUNCTION__);
729 retval = -ENODEV;
730 goto error;
731 }
732 if ((ati_remote->endpoint_in->bmAttributes & 3) != 3) {
733 err("%s: Unexpected endpoint_in->bmAttributes\n", __FUNCTION__);
734 retval = -ENODEV;
735 goto error;
736 }
737 if (le16_to_cpu(ati_remote->endpoint_in->wMaxPacketSize) == 0) {
738 err("%s: endpoint_in message size==0? \n", __FUNCTION__);
739 retval = -ENODEV;
740 goto error;
741 }
742
743 /* Allocate URB buffers, URBs */
744 ati_remote->inbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC,
745 &ati_remote->inbuf_dma);
746 if (!ati_remote->inbuf)
747 goto error;
748
749 ati_remote->outbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC,
750 &ati_remote->outbuf_dma);
751 if (!ati_remote->outbuf)
752 goto error;
753
754 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
755 if (!ati_remote->irq_urb)
756 goto error;
757
758 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL);
759 if (!ati_remote->out_urb)
760 goto error;
761
762 usb_make_path(udev, path, NAME_BUFSIZE);
763 sprintf(ati_remote->phys, "%s/input%d", path, ATI_INPUTNUM);
764 if (udev->manufacturer)
765 strcat(ati_remote->name, udev->manufacturer);
766
767 if (udev->product)
768 sprintf(ati_remote->name, "%s %s", ati_remote->name, udev->product);
769
770 if (!strlen(ati_remote->name))
771 sprintf(ati_remote->name, DRIVER_DESC "(%04x,%04x)",
772 le16_to_cpu(ati_remote->udev->descriptor.idVendor),
773 le16_to_cpu(ati_remote->udev->descriptor.idProduct));
774
775 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */
776 retval = ati_remote_initialize(ati_remote);
777 if (retval)
778 goto error;
779
780 /* Set up and register input device */
781 ati_remote_input_init(ati_remote);
782 input_register_device(&ati_remote->idev);
783
784 dev_info(&ati_remote->interface->dev, "Input registered: %s on %s\n",
785 ati_remote->name, path);
786
787 usb_set_intfdata(interface, ati_remote);
788
789 error:
790 if (retval)
791 ati_remote_delete(ati_remote);
792
793 return retval;
794 }
795
796 /*
797 * ati_remote_disconnect
798 */
799 static void ati_remote_disconnect(struct usb_interface *interface)
800 {
801 struct ati_remote *ati_remote;
802
803 down(&disconnect_sem);
804
805 ati_remote = usb_get_intfdata(interface);
806 usb_set_intfdata(interface, NULL);
807 if (!ati_remote) {
808 warn("%s - null device?\n", __FUNCTION__);
809 return;
810 }
811
812 ati_remote_delete(ati_remote);
813
814 up(&disconnect_sem);
815 }
816
817 /*
818 * ati_remote_init
819 */
820 static int __init ati_remote_init(void)
821 {
822 int result;
823
824 result = usb_register(&ati_remote_driver);
825 if (result)
826 err("usb_register error #%d\n", result);
827 else
828 info("Registered USB driver " DRIVER_DESC " v. " DRIVER_VERSION);
829
830 return result;
831 }
832
833 /*
834 * ati_remote_exit
835 */
836 static void __exit ati_remote_exit(void)
837 {
838 usb_deregister(&ati_remote_driver);
839 }
840
841 /*
842 * module specification
843 */
844
845 module_init(ati_remote_init);
846 module_exit(ati_remote_exit);
847
848 MODULE_AUTHOR(DRIVER_AUTHOR);
849 MODULE_DESCRIPTION(DRIVER_DESC);
850 MODULE_LICENSE("GPL");
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