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fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / drivers / input / misc / ati_remote.c
blob471aab206443bd8641d03e561aa58565ce5b3cb4
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/kernel.h>
89 #include <linux/errno.h>
90 #include <linux/init.h>
91 #include <linux/slab.h>
92 #include <linux/module.h>
93 #include <linux/moduleparam.h>
94 #include <linux/usb/input.h>
95 #include <linux/wait.h>
96 #include <linux/jiffies.h>
97
98 /*
99 * Module and Version Information, Module Parameters
100 */
101
102 #define ATI_REMOTE_VENDOR_ID 0x0bc7
103 #define ATI_REMOTE_PRODUCT_ID 0x004
104 #define LOLA_REMOTE_PRODUCT_ID 0x002
105 #define MEDION_REMOTE_PRODUCT_ID 0x006
106
107 #define DRIVER_VERSION "2.2.1"
108 #define DRIVER_AUTHOR "Torrey Hoffman <thoffman@arnor.net>"
109 #define DRIVER_DESC "ATI/X10 RF USB Remote Control"
110
111 #define NAME_BUFSIZE 80 /* size of product name, path buffers */
112 #define DATA_BUFSIZE 63 /* size of URB data buffers */
113
114 /*
115 * Duplicate event filtering time.
116 * Sequential, identical KIND_FILTERED inputs with less than
117 * FILTER_TIME milliseconds between them are considered as repeat
118 * events. The hardware generates 5 events for the first keypress
119 * and we have to take this into account for an accurate repeat
120 * behaviour.
121 */
122 #define FILTER_TIME 60 /* msec */
123 #define REPEAT_DELAY 500 /* msec */
124
125 static unsigned long channel_mask;
126 module_param(channel_mask, ulong, 0644);
127 MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");
128
129 static int debug;
130 module_param(debug, int, 0644);
131 MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
132
133 static int repeat_filter = FILTER_TIME;
134 module_param(repeat_filter, int, 0644);
135 MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec");
136
137 static int repeat_delay = REPEAT_DELAY;
138 module_param(repeat_delay, int, 0644);
139 MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec");
140
141 #define dbginfo(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)
142 #undef err
143 #define err(format, arg...) printk(KERN_ERR format , ## arg)
144
145 static struct usb_device_id ati_remote_table[] = {
146 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID) },
147 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID) },
148 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID) },
149 {} /* Terminating entry */
150 };
151
152 MODULE_DEVICE_TABLE(usb, ati_remote_table);
153
154 /* Get hi and low bytes of a 16-bits int */
155 #define HI(a) ((unsigned char)((a) >> 8))
156 #define LO(a) ((unsigned char)((a) & 0xff))
157
158 #define SEND_FLAG_IN_PROGRESS 1
159 #define SEND_FLAG_COMPLETE 2
160
161 /* Device initialization strings */
162 static char init1[] = { 0x01, 0x00, 0x20, 0x14 };
163 static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };
164
165 struct ati_remote {
166 struct input_dev *idev;
167 struct usb_device *udev;
168 struct usb_interface *interface;
169
170 struct urb *irq_urb;
171 struct urb *out_urb;
172 struct usb_endpoint_descriptor *endpoint_in;
173 struct usb_endpoint_descriptor *endpoint_out;
174 unsigned char *inbuf;
175 unsigned char *outbuf;
176 dma_addr_t inbuf_dma;
177 dma_addr_t outbuf_dma;
178
179 unsigned char old_data[2]; /* Detect duplicate events */
180 unsigned long old_jiffies;
181 unsigned long acc_jiffies; /* handle acceleration */
182 unsigned long first_jiffies;
183
184 unsigned int repeat_count;
185
186 char name[NAME_BUFSIZE];
187 char phys[NAME_BUFSIZE];
188
189 wait_queue_head_t wait;
190 int send_flags;
191 };
192
193 /* "Kinds" of messages sent from the hardware to the driver. */
194 #define KIND_END 0
195 #define KIND_LITERAL 1 /* Simply pass to input system */
196 #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */
197 #define KIND_LU 3 /* Directional keypad diagonals - left up, */
198 #define KIND_RU 4 /* right up, */
199 #define KIND_LD 5 /* left down, */
200 #define KIND_RD 6 /* right down */
201 #define KIND_ACCEL 7 /* Directional keypad - left, right, up, down.*/
202
203 /* Translation table from hardware messages to input events. */
204 static const struct {
205 short kind;
206 unsigned char data1, data2;
207 int type;
208 unsigned int code;
209 int value;
210 } ati_remote_tbl[] = {
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 int ati_remote_open (struct input_dev *inputdev);
291 static void ati_remote_close (struct input_dev *inputdev);
292 static int ati_remote_sendpacket (struct ati_remote *ati_remote, u16 cmd, unsigned char *data);
293 static void ati_remote_irq_out (struct urb *urb);
294 static void ati_remote_irq_in (struct urb *urb);
295 static void ati_remote_input_report (struct urb *urb);
296 static int ati_remote_initialize (struct ati_remote *ati_remote);
297 static int ati_remote_probe (struct usb_interface *interface, const struct usb_device_id *id);
298 static void ati_remote_disconnect (struct usb_interface *interface);
299
300 /* usb specific object to register with the usb subsystem */
301 static struct usb_driver ati_remote_driver = {
302 .name = "ati_remote",
303 .probe = ati_remote_probe,
304 .disconnect = ati_remote_disconnect,
305 .id_table = ati_remote_table,
306 };
307
308 /*
309 * ati_remote_dump_input
310 */
311 static void ati_remote_dump(unsigned char *data, unsigned int len)
312 {
313 if ((len == 1) && (data[0] != (unsigned char)0xff) && (data[0] != 0x00))
314 warn("Weird byte 0x%02x", data[0]);
315 else if (len == 4)
316 warn("Weird key %02x %02x %02x %02x",
317 data[0], data[1], data[2], data[3]);
318 else
319 warn("Weird data, len=%d %02x %02x %02x %02x %02x %02x ...",
320 len, data[0], data[1], data[2], data[3], data[4], data[5]);
321 }
322
323 /*
324 * ati_remote_open
325 */
326 static int ati_remote_open(struct input_dev *inputdev)
327 {
328 struct ati_remote *ati_remote = input_get_drvdata(inputdev);
329
330 /* On first open, submit the read urb which was set up previously. */
331 ati_remote->irq_urb->dev = ati_remote->udev;
332 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) {
333 dev_err(&ati_remote->interface->dev,
334 "%s: usb_submit_urb failed!\n", __FUNCTION__);
335 return -EIO;
336 }
337
338 return 0;
339 }
340
341 /*
342 * ati_remote_close
343 */
344 static void ati_remote_close(struct input_dev *inputdev)
345 {
346 struct ati_remote *ati_remote = input_get_drvdata(inputdev);
347
348 usb_kill_urb(ati_remote->irq_urb);
349 }
350
351 /*
352 * ati_remote_irq_out
353 */
354 static void ati_remote_irq_out(struct urb *urb)
355 {
356 struct ati_remote *ati_remote = urb->context;
357
358 if (urb->status) {
359 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n",
360 __FUNCTION__, urb->status);
361 return;
362 }
363
364 ati_remote->send_flags |= SEND_FLAG_COMPLETE;
365 wmb();
366 wake_up(&ati_remote->wait);
367 }
368
369 /*
370 * ati_remote_sendpacket
371 *
372 * Used to send device initialization strings
373 */
374 static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, unsigned char *data)
375 {
376 int retval = 0;
377
378 /* Set up out_urb */
379 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd));
380 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd);
381
382 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1;
383 ati_remote->out_urb->dev = ati_remote->udev;
384 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS;
385
386 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC);
387 if (retval) {
388 dev_dbg(&ati_remote->interface->dev,
389 "sendpacket: usb_submit_urb failed: %d\n", retval);
390 return retval;
391 }
392
393 wait_event_timeout(ati_remote->wait,
394 ((ati_remote->out_urb->status != -EINPROGRESS) ||
395 (ati_remote->send_flags & SEND_FLAG_COMPLETE)),
396 HZ);
397 usb_kill_urb(ati_remote->out_urb);
398
399 return retval;
400 }
401
402 /*
403 * ati_remote_event_lookup
404 */
405 static int ati_remote_event_lookup(int rem, unsigned char d1, unsigned char d2)
406 {
407 int i;
408
409 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {
410 /*
411 * Decide if the table entry matches the remote input.
412 */
413 if ((((ati_remote_tbl[i].data1 & 0x0f) == (d1 & 0x0f))) &&
414 ((((ati_remote_tbl[i].data1 >> 4) -
415 (d1 >> 4) + rem) & 0x0f) == 0x0f) &&
416 (ati_remote_tbl[i].data2 == d2))
417 return i;
418
419 }
420 return -1;
421 }
422
423 /*
424 * ati_remote_compute_accel
425 *
426 * Implements acceleration curve for directional control pad
427 * If elapsed time since last event is > 1/4 second, user "stopped",
428 * so reset acceleration. Otherwise, user is probably holding the control
429 * pad down, so we increase acceleration, ramping up over two seconds to
430 * a maximum speed.
431 */
432 static int ati_remote_compute_accel(struct ati_remote *ati_remote)
433 {
434 static const char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
435 unsigned long now = jiffies;
436 int acc;
437
438 if (time_after(now, ati_remote->old_jiffies + msecs_to_jiffies(250))) {
439 acc = 1;
440 ati_remote->acc_jiffies = now;
441 }
442 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(125)))
443 acc = accel[0];
444 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(250)))
445 acc = accel[1];
446 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(500)))
447 acc = accel[2];
448 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1000)))
449 acc = accel[3];
450 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1500)))
451 acc = accel[4];
452 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(2000)))
453 acc = accel[5];
454 else
455 acc = accel[6];
456
457 return acc;
458 }
459
460 /*
461 * ati_remote_report_input
462 */
463 static void ati_remote_input_report(struct urb *urb)
464 {
465 struct ati_remote *ati_remote = urb->context;
466 unsigned char *data= ati_remote->inbuf;
467 struct input_dev *dev = ati_remote->idev;
468 int index, acc;
469 int remote_num;
470
471 /* Deal with strange looking inputs */
472 if ( (urb->actual_length != 4) || (data[0] != 0x14) ||
473 ((data[3] & 0x0f) != 0x00) ) {
474 ati_remote_dump(data, urb->actual_length);
475 return;
476 }
477
478 /* Mask unwanted remote channels. */
479 /* note: remote_num is 0-based, channel 1 on remote == 0 here */
480 remote_num = (data[3] >> 4) & 0x0f;
481 if (channel_mask & (1 << (remote_num + 1))) {
482 dbginfo(&ati_remote->interface->dev,
483 "Masked input from channel 0x%02x: data %02x,%02x, mask= 0x%02lx\n",
484 remote_num, data[1], data[2], channel_mask);
485 return;
486 }
487
488 /* Look up event code index in translation table */
489 index = ati_remote_event_lookup(remote_num, data[1], data[2]);
490 if (index < 0) {
491 dev_warn(&ati_remote->interface->dev,
492 "Unknown input from channel 0x%02x: data %02x,%02x\n",
493 remote_num, data[1], data[2]);
494 return;
495 }
496 dbginfo(&ati_remote->interface->dev,
497 "channel 0x%02x; data %02x,%02x; index %d; keycode %d\n",
498 remote_num, data[1], data[2], index, ati_remote_tbl[index].code);
499
500 if (ati_remote_tbl[index].kind == KIND_LITERAL) {
501 input_event(dev, ati_remote_tbl[index].type,
502 ati_remote_tbl[index].code,
503 ati_remote_tbl[index].value);
504 input_sync(dev);
505
506 ati_remote->old_jiffies = jiffies;
507 return;
508 }
509
510 if (ati_remote_tbl[index].kind == KIND_FILTERED) {
511 unsigned long now = jiffies;
512
513 /* Filter duplicate events which happen "too close" together. */
514 if (ati_remote->old_data[0] == data[1] &&
515 ati_remote->old_data[1] == data[2] &&
516 time_before(now, ati_remote->old_jiffies +
517 msecs_to_jiffies(repeat_filter))) {
518 ati_remote->repeat_count++;
519 } else {
520 ati_remote->repeat_count = 0;
521 ati_remote->first_jiffies = now;
522 }
523
524 ati_remote->old_data[0] = data[1];
525 ati_remote->old_data[1] = data[2];
526 ati_remote->old_jiffies = now;
527
528 /* Ensure we skip at least the 4 first duplicate events (generated
529 * by a single keypress), and continue skipping until repeat_delay
530 * msecs have passed
531 */
532 if (ati_remote->repeat_count > 0 &&
533 (ati_remote->repeat_count < 5 ||
534 time_before(now, ati_remote->first_jiffies +
535 msecs_to_jiffies(repeat_delay))))
536 return;
537
538
539 input_event(dev, ati_remote_tbl[index].type,
540 ati_remote_tbl[index].code, 1);
541 input_sync(dev);
542 input_event(dev, ati_remote_tbl[index].type,
543 ati_remote_tbl[index].code, 0);
544 input_sync(dev);
545
546 } else {
547
548 /*
549 * Other event kinds are from the directional control pad, and have an
550 * acceleration factor applied to them. Without this acceleration, the
551 * control pad is mostly unusable.
552 */
553 acc = ati_remote_compute_accel(ati_remote);
554
555 switch (ati_remote_tbl[index].kind) {
556 case KIND_ACCEL:
557 input_event(dev, ati_remote_tbl[index].type,
558 ati_remote_tbl[index].code,
559 ati_remote_tbl[index].value * acc);
560 break;
561 case KIND_LU:
562 input_report_rel(dev, REL_X, -acc);
563 input_report_rel(dev, REL_Y, -acc);
564 break;
565 case KIND_RU:
566 input_report_rel(dev, REL_X, acc);
567 input_report_rel(dev, REL_Y, -acc);
568 break;
569 case KIND_LD:
570 input_report_rel(dev, REL_X, -acc);
571 input_report_rel(dev, REL_Y, acc);
572 break;
573 case KIND_RD:
574 input_report_rel(dev, REL_X, acc);
575 input_report_rel(dev, REL_Y, acc);
576 break;
577 default:
578 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n",
579 ati_remote_tbl[index].kind);
580 }
581 input_sync(dev);
582
583 ati_remote->old_jiffies = jiffies;
584 ati_remote->old_data[0] = data[1];
585 ati_remote->old_data[1] = data[2];
586 }
587 }
588
589 /*
590 * ati_remote_irq_in
591 */
592 static void ati_remote_irq_in(struct urb *urb)
593 {
594 struct ati_remote *ati_remote = urb->context;
595 int retval;
596
597 switch (urb->status) {
598 case 0: /* success */
599 ati_remote_input_report(urb);
600 break;
601 case -ECONNRESET: /* unlink */
602 case -ENOENT:
603 case -ESHUTDOWN:
604 dev_dbg(&ati_remote->interface->dev, "%s: urb error status, unlink? \n",
605 __FUNCTION__);
606 return;
607 default: /* error */
608 dev_dbg(&ati_remote->interface->dev, "%s: Nonzero urb status %d\n",
609 __FUNCTION__, urb->status);
610 }
611
612 retval = usb_submit_urb(urb, GFP_ATOMIC);
613 if (retval)
614 dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n",
615 __FUNCTION__, retval);
616 }
617
618 /*
619 * ati_remote_alloc_buffers
620 */
621 static int ati_remote_alloc_buffers(struct usb_device *udev,
622 struct ati_remote *ati_remote)
623 {
624 ati_remote->inbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, GFP_ATOMIC,
625 &ati_remote->inbuf_dma);
626 if (!ati_remote->inbuf)
627 return -1;
628
629 ati_remote->outbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, GFP_ATOMIC,
630 &ati_remote->outbuf_dma);
631 if (!ati_remote->outbuf)
632 return -1;
633
634 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
635 if (!ati_remote->irq_urb)
636 return -1;
637
638 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL);
639 if (!ati_remote->out_urb)
640 return -1;
641
642 return 0;
643 }
644
645 /*
646 * ati_remote_free_buffers
647 */
648 static void ati_remote_free_buffers(struct ati_remote *ati_remote)
649 {
650 usb_free_urb(ati_remote->irq_urb);
651 usb_free_urb(ati_remote->out_urb);
652
653 usb_buffer_free(ati_remote->udev, DATA_BUFSIZE,
654 ati_remote->inbuf, ati_remote->inbuf_dma);
655
656 usb_buffer_free(ati_remote->udev, DATA_BUFSIZE,
657 ati_remote->outbuf, ati_remote->outbuf_dma);
658 }
659
660 static void ati_remote_input_init(struct ati_remote *ati_remote)
661 {
662 struct input_dev *idev = ati_remote->idev;
663 int i;
664
665 idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
666 idev->keybit[LONG(BTN_MOUSE)] = ( BIT(BTN_LEFT) | BIT(BTN_RIGHT) |
667 BIT(BTN_SIDE) | BIT(BTN_EXTRA) );
668 idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
669 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++)
670 if (ati_remote_tbl[i].type == EV_KEY)
671 set_bit(ati_remote_tbl[i].code, idev->keybit);
672
673 input_set_drvdata(idev, ati_remote);
674
675 idev->open = ati_remote_open;
676 idev->close = ati_remote_close;
677
678 idev->name = ati_remote->name;
679 idev->phys = ati_remote->phys;
680
681 usb_to_input_id(ati_remote->udev, &idev->id);
682 idev->dev.parent = &ati_remote->udev->dev;
683 }
684
685 static int ati_remote_initialize(struct ati_remote *ati_remote)
686 {
687 struct usb_device *udev = ati_remote->udev;
688 int pipe, maxp;
689
690 init_waitqueue_head(&ati_remote->wait);
691
692 /* Set up irq_urb */
693 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
694 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
695 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
696
697 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
698 maxp, ati_remote_irq_in, ati_remote,
699 ati_remote->endpoint_in->bInterval);
700 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma;
701 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
702
703 /* Set up out_urb */
704 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
705 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
706 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
707
708 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
709 maxp, ati_remote_irq_out, ati_remote,
710 ati_remote->endpoint_out->bInterval);
711 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma;
712 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
713
714 /* send initialization strings */
715 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) ||
716 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) {
717 dev_err(&ati_remote->interface->dev,
718 "Initializing ati_remote hardware failed.\n");
719 return -EIO;
720 }
721
722 return 0;
723 }
724
725 /*
726 * ati_remote_probe
727 */
728 static int ati_remote_probe(struct usb_interface *interface, const struct usb_device_id *id)
729 {
730 struct usb_device *udev = interface_to_usbdev(interface);
731 struct usb_host_interface *iface_host = interface->cur_altsetting;
732 struct usb_endpoint_descriptor *endpoint_in, *endpoint_out;
733 struct ati_remote *ati_remote;
734 struct input_dev *input_dev;
735 int err = -ENOMEM;
736
737 if (iface_host->desc.bNumEndpoints != 2) {
738 err("%s: Unexpected desc.bNumEndpoints\n", __FUNCTION__);
739 return -ENODEV;
740 }
741
742 endpoint_in = &iface_host->endpoint[0].desc;
743 endpoint_out = &iface_host->endpoint[1].desc;
744
745 if (!usb_endpoint_is_int_in(endpoint_in)) {
746 err("%s: Unexpected endpoint_in\n", __FUNCTION__);
747 return -ENODEV;
748 }
749 if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) {
750 err("%s: endpoint_in message size==0? \n", __FUNCTION__);
751 return -ENODEV;
752 }
753
754 ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL);
755 input_dev = input_allocate_device();
756 if (!ati_remote || !input_dev)
757 goto fail1;
758
759 /* Allocate URB buffers, URBs */
760 if (ati_remote_alloc_buffers(udev, ati_remote))
761 goto fail2;
762
763 ati_remote->endpoint_in = endpoint_in;
764 ati_remote->endpoint_out = endpoint_out;
765 ati_remote->udev = udev;
766 ati_remote->idev = input_dev;
767 ati_remote->interface = interface;
768
769 usb_make_path(udev, ati_remote->phys, sizeof(ati_remote->phys));
770 strlcpy(ati_remote->phys, "/input0", sizeof(ati_remote->phys));
771
772 if (udev->manufacturer)
773 strlcpy(ati_remote->name, udev->manufacturer, sizeof(ati_remote->name));
774
775 if (udev->product)
776 snprintf(ati_remote->name, sizeof(ati_remote->name),
777 "%s %s", ati_remote->name, udev->product);
778
779 if (!strlen(ati_remote->name))
780 snprintf(ati_remote->name, sizeof(ati_remote->name),
781 DRIVER_DESC "(%04x,%04x)",
782 le16_to_cpu(ati_remote->udev->descriptor.idVendor),
783 le16_to_cpu(ati_remote->udev->descriptor.idProduct));
784
785 ati_remote_input_init(ati_remote);
786
787 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */
788 err = ati_remote_initialize(ati_remote);
789 if (err)
790 goto fail3;
791
792 /* Set up and register input device */
793 err = input_register_device(ati_remote->idev);
794 if (err)
795 goto fail3;
796
797 usb_set_intfdata(interface, ati_remote);
798 return 0;
799
800 fail3: usb_kill_urb(ati_remote->irq_urb);
801 usb_kill_urb(ati_remote->out_urb);
802 fail2: ati_remote_free_buffers(ati_remote);
803 fail1: input_free_device(input_dev);
804 kfree(ati_remote);
805 return err;
806 }
807
808 /*
809 * ati_remote_disconnect
810 */
811 static void ati_remote_disconnect(struct usb_interface *interface)
812 {
813 struct ati_remote *ati_remote;
814
815 ati_remote = usb_get_intfdata(interface);
816 usb_set_intfdata(interface, NULL);
817 if (!ati_remote) {
818 warn("%s - null device?\n", __FUNCTION__);
819 return;
820 }
821
822 usb_kill_urb(ati_remote->irq_urb);
823 usb_kill_urb(ati_remote->out_urb);
824 input_unregister_device(ati_remote->idev);
825 ati_remote_free_buffers(ati_remote);
826 kfree(ati_remote);
827 }
828
829 /*
830 * ati_remote_init
831 */
832 static int __init ati_remote_init(void)
833 {
834 int result;
835
836 result = usb_register(&ati_remote_driver);
837 if (result)
838 err("usb_register error #%d\n", result);
839 else
840 info("Registered USB driver " DRIVER_DESC " v. " DRIVER_VERSION);
841
842 return result;
843 }
844
845 /*
846 * ati_remote_exit
847 */
848 static void __exit ati_remote_exit(void)
849 {
850 usb_deregister(&ati_remote_driver);
851 }
852
853 /*
854 * module specification
855 */
856
857 module_init(ati_remote_init);
858 module_exit(ati_remote_exit);
859
860 MODULE_AUTHOR(DRIVER_AUTHOR);
861 MODULE_DESCRIPTION(DRIVER_DESC);
862 MODULE_LICENSE("GPL");
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