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IRQ: Typedef the IRQ handler function type
[deliverable/linux.git] / drivers / usb / input / ati_remote.c
CommitLineData
05f091ab 1/*
1da177e4
LT		 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
05f091ab 8 * porting to the 2.6 kernel interfaces, along with other modification
1da177e4
LT		 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.
05f091ab
DT		 11 *
12 * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by
1da177e4
LT		 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 *
05f091ab 26 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
1da177e4
LT		 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
05f091ab 30 * the Free Software Foundation; either version 2 of the License, or
1da177e4 31 * (at your option) any later version.
05f091ab 32 *
1da177e4
LT		 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.
05f091ab 37 *
1da177e4
LT		 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
05f091ab
DT		 41 *
42 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
1da177e4
LT		 43 *
44 * Hardware & software notes
45 *
05f091ab
DT		 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
1da177e4
LT		 48 * "USB Receiver" with manufacturer "X10 Wireless Technology Inc".
49 *
05f091ab 50 * The "Lola" remote is available from X10. See:
1da177e4
LT		 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 *
05f091ab 55 * It is possible to use multiple receivers and remotes on multiple computers
1da177e4 56 * simultaneously by configuring them to use specific channels.
05f091ab
DT		 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
1da177e4
LT		 60 * hardware.
61 *
62 * Each remote can be configured to transmit on one channel as follows:
05f091ab
DT		 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
1da177e4 66 * to 16, and press the hand icon again.
05f091ab 67 *
1da177e4
LT		 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
05f091ab 73 * channels will be ignored by the module. To mask out channels, just add
1da177e4
LT		 74 * all the 2^channel_number values together.
75 *
76 * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote
05f091ab 77 * ignore signals coming from remote controls transmitting on channel 4, but
1da177e4
LT		 78 * accept all other channels.
79 *
05f091ab 80 * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be
1da177e4
LT		 81 * ignored.
82 *
05f091ab 83 * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this
1da177e4
LT		 84 * parameter are unused.
85 *
86 */
87
1da177e4
LT		 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>
ae0dadcf 94#include <linux/usb/input.h>
1da177e4 95#include <linux/wait.h>
f0b80fbf 96#include <linux/jiffies.h>
1da177e4
LT		 97
98/*
99 * Module and Version Information, Module Parameters
100 */
05f091ab
DT		 101
102#define ATI_REMOTE_VENDOR_ID 0x0bc7
103#define ATI_REMOTE_PRODUCT_ID 0x004
104#define LOLA_REMOTE_PRODUCT_ID 0x002
1da177e4
LT		 105#define MEDION_REMOTE_PRODUCT_ID 0x006
106
05f091ab 107#define DRIVER_VERSION "2.2.1"
1da177e4
LT		 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 */
1da177e4 113
c6698697
EH		 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
65cde54b 124static unsigned long channel_mask;
c605b679 125module_param(channel_mask, ulong, 0644);
1da177e4
LT		 126MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");
127
65cde54b 128static int debug;
c605b679 129module_param(debug, int, 0644);
1da177e4
LT		 130MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
131
c6698697
EH		 132static int repeat_filter = FILTER_TIME;
133module_param(repeat_filter, int, 0644);
134MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec");
135
1da177e4
LT		 136#define dbginfo(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)
137#undef err
138#define err(format, arg...) printk(KERN_ERR format , ## arg)
05f091ab 139
1da177e4
LT		 140static struct usb_device_id ati_remote_table[] = {
141 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID) },
142 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID) },
143 { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID) },
144 {} /* Terminating entry */
145};
146
147MODULE_DEVICE_TABLE(usb, ati_remote_table);
148
149/* Get hi and low bytes of a 16-bits int */
150#define HI(a) ((unsigned char)((a) >> 8))
151#define LO(a) ((unsigned char)((a) & 0xff))
152
153#define SEND_FLAG_IN_PROGRESS 1
154#define SEND_FLAG_COMPLETE 2
155
156/* Device initialization strings */
157static char init1[] = { 0x01, 0x00, 0x20, 0x14 };
158static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };
159
1da177e4 160struct ati_remote {
c5b7c7c3 161 struct input_dev *idev;
1da177e4
LT		 162 struct usb_device *udev;
163 struct usb_interface *interface;
05f091ab 164
1da177e4
LT		 165 struct urb *irq_urb;
166 struct urb *out_urb;
167 struct usb_endpoint_descriptor *endpoint_in;
168 struct usb_endpoint_descriptor *endpoint_out;
169 unsigned char *inbuf;
170 unsigned char *outbuf;
171 dma_addr_t inbuf_dma;
172 dma_addr_t outbuf_dma;
173
1da177e4
LT		 174 unsigned char old_data[2]; /* Detect duplicate events */
175 unsigned long old_jiffies;
176 unsigned long acc_jiffies; /* handle acceleration */
177 unsigned int repeat_count;
05f091ab 178
1da177e4
LT		 179 char name[NAME_BUFSIZE];
180 char phys[NAME_BUFSIZE];
181
182 wait_queue_head_t wait;
183 int send_flags;
184};
185
186/* "Kinds" of messages sent from the hardware to the driver. */
187#define KIND_END 0
188#define KIND_LITERAL 1 /* Simply pass to input system */
189#define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */
190#define KIND_LU 3 /* Directional keypad diagonals - left up, */
191#define KIND_RU 4 /* right up, */
192#define KIND_LD 5 /* left down, */
193#define KIND_RD 6 /* right down */
194#define KIND_ACCEL 7 /* Directional keypad - left, right, up, down.*/
195
196/* Translation table from hardware messages to input events. */
4c4c9432 197static const struct {
1da177e4
LT		 198 short kind;
199 unsigned char data1, data2;
200 int type;
201 unsigned int code;
202 int value;
c5b7c7c3 203} ati_remote_tbl[] = {
1da177e4
LT		 204 /* Directional control pad axes */
205 {KIND_ACCEL, 0x35, 0x70, EV_REL, REL_X, -1}, /* left */
206 {KIND_ACCEL, 0x36, 0x71, EV_REL, REL_X, 1}, /* right */
207 {KIND_ACCEL, 0x37, 0x72, EV_REL, REL_Y, -1}, /* up */
208 {KIND_ACCEL, 0x38, 0x73, EV_REL, REL_Y, 1}, /* down */
05f091ab 209 /* Directional control pad diagonals */
1da177e4
LT		 210 {KIND_LU, 0x39, 0x74, EV_REL, 0, 0}, /* left up */
211 {KIND_RU, 0x3a, 0x75, EV_REL, 0, 0}, /* right up */
212 {KIND_LD, 0x3c, 0x77, EV_REL, 0, 0}, /* left down */
213 {KIND_RD, 0x3b, 0x76, EV_REL, 0, 0}, /* right down */
214
215 /* "Mouse button" buttons */
216 {KIND_LITERAL, 0x3d, 0x78, EV_KEY, BTN_LEFT, 1}, /* left btn down */
217 {KIND_LITERAL, 0x3e, 0x79, EV_KEY, BTN_LEFT, 0}, /* left btn up */
218 {KIND_LITERAL, 0x41, 0x7c, EV_KEY, BTN_RIGHT, 1},/* right btn down */
219 {KIND_LITERAL, 0x42, 0x7d, EV_KEY, BTN_RIGHT, 0},/* right btn up */
220
05f091ab 221 /* Artificial "doubleclick" events are generated by the hardware.
1da177e4
LT		 222 * They are mapped to the "side" and "extra" mouse buttons here. */
223 {KIND_FILTERED, 0x3f, 0x7a, EV_KEY, BTN_SIDE, 1}, /* left dblclick */
224 {KIND_FILTERED, 0x43, 0x7e, EV_KEY, BTN_EXTRA, 1},/* right dblclick */
225
226 /* keyboard. */
227 {KIND_FILTERED, 0xd2, 0x0d, EV_KEY, KEY_1, 1},
228 {KIND_FILTERED, 0xd3, 0x0e, EV_KEY, KEY_2, 1},
229 {KIND_FILTERED, 0xd4, 0x0f, EV_KEY, KEY_3, 1},
230 {KIND_FILTERED, 0xd5, 0x10, EV_KEY, KEY_4, 1},
231 {KIND_FILTERED, 0xd6, 0x11, EV_KEY, KEY_5, 1},
232 {KIND_FILTERED, 0xd7, 0x12, EV_KEY, KEY_6, 1},
233 {KIND_FILTERED, 0xd8, 0x13, EV_KEY, KEY_7, 1},
234 {KIND_FILTERED, 0xd9, 0x14, EV_KEY, KEY_8, 1},
235 {KIND_FILTERED, 0xda, 0x15, EV_KEY, KEY_9, 1},
236 {KIND_FILTERED, 0xdc, 0x17, EV_KEY, KEY_0, 1},
237 {KIND_FILTERED, 0xc5, 0x00, EV_KEY, KEY_A, 1},
238 {KIND_FILTERED, 0xc6, 0x01, EV_KEY, KEY_B, 1},
239 {KIND_FILTERED, 0xde, 0x19, EV_KEY, KEY_C, 1},
240 {KIND_FILTERED, 0xe0, 0x1b, EV_KEY, KEY_D, 1},
241 {KIND_FILTERED, 0xe6, 0x21, EV_KEY, KEY_E, 1},
242 {KIND_FILTERED, 0xe8, 0x23, EV_KEY, KEY_F, 1},
243
244 /* "special" keys */
245 {KIND_FILTERED, 0xdd, 0x18, EV_KEY, KEY_KPENTER, 1}, /* "check" */
246 {KIND_FILTERED, 0xdb, 0x16, EV_KEY, KEY_MENU, 1}, /* "menu" */
247 {KIND_FILTERED, 0xc7, 0x02, EV_KEY, KEY_POWER, 1}, /* Power */
248 {KIND_FILTERED, 0xc8, 0x03, EV_KEY, KEY_TV, 1}, /* TV */
249 {KIND_FILTERED, 0xc9, 0x04, EV_KEY, KEY_DVD, 1}, /* DVD */
250 {KIND_FILTERED, 0xca, 0x05, EV_KEY, KEY_WWW, 1}, /* WEB */
251 {KIND_FILTERED, 0xcb, 0x06, EV_KEY, KEY_BOOKMARKS, 1}, /* "book" */
252 {KIND_FILTERED, 0xcc, 0x07, EV_KEY, KEY_EDIT, 1}, /* "hand" */
253 {KIND_FILTERED, 0xe1, 0x1c, EV_KEY, KEY_COFFEE, 1}, /* "timer" */
254 {KIND_FILTERED, 0xe5, 0x20, EV_KEY, KEY_FRONT, 1}, /* "max" */
255 {KIND_FILTERED, 0xe2, 0x1d, EV_KEY, KEY_LEFT, 1}, /* left */
256 {KIND_FILTERED, 0xe4, 0x1f, EV_KEY, KEY_RIGHT, 1}, /* right */
257 {KIND_FILTERED, 0xe7, 0x22, EV_KEY, KEY_DOWN, 1}, /* down */
258 {KIND_FILTERED, 0xdf, 0x1a, EV_KEY, KEY_UP, 1}, /* up */
259 {KIND_FILTERED, 0xe3, 0x1e, EV_KEY, KEY_OK, 1}, /* "OK" */
260 {KIND_FILTERED, 0xce, 0x09, EV_KEY, KEY_VOLUMEDOWN, 1}, /* VOL + */
261 {KIND_FILTERED, 0xcd, 0x08, EV_KEY, KEY_VOLUMEUP, 1}, /* VOL - */
262 {KIND_FILTERED, 0xcf, 0x0a, EV_KEY, KEY_MUTE, 1}, /* MUTE */
263 {KIND_FILTERED, 0xd0, 0x0b, EV_KEY, KEY_CHANNELUP, 1}, /* CH + */
264 {KIND_FILTERED, 0xd1, 0x0c, EV_KEY, KEY_CHANNELDOWN, 1},/* CH - */
265 {KIND_FILTERED, 0xec, 0x27, EV_KEY, KEY_RECORD, 1}, /* ( o) red */
266 {KIND_FILTERED, 0xea, 0x25, EV_KEY, KEY_PLAY, 1}, /* ( >) */
267 {KIND_FILTERED, 0xe9, 0x24, EV_KEY, KEY_REWIND, 1}, /* (<<) */
268 {KIND_FILTERED, 0xeb, 0x26, EV_KEY, KEY_FORWARD, 1}, /* (>>) */
05f091ab 269 {KIND_FILTERED, 0xed, 0x28, EV_KEY, KEY_STOP, 1}, /* ([]) */
1da177e4
LT		 270 {KIND_FILTERED, 0xee, 0x29, EV_KEY, KEY_PAUSE, 1}, /* ('') */
271 {KIND_FILTERED, 0xf0, 0x2b, EV_KEY, KEY_PREVIOUS, 1}, /* (<-) */
272 {KIND_FILTERED, 0xef, 0x2a, EV_KEY, KEY_NEXT, 1}, /* (>+) */
273 {KIND_FILTERED, 0xf2, 0x2D, EV_KEY, KEY_INFO, 1}, /* PLAYING */
274 {KIND_FILTERED, 0xf3, 0x2E, EV_KEY, KEY_HOME, 1}, /* TOP */
275 {KIND_FILTERED, 0xf4, 0x2F, EV_KEY, KEY_END, 1}, /* END */
05f091ab
DT		 276 {KIND_FILTERED, 0xf5, 0x30, EV_KEY, KEY_SELECT, 1}, /* SELECT */
277
1da177e4
LT		 278 {KIND_END, 0x00, 0x00, EV_MAX + 1, 0, 0}
279};
280
281/* Local function prototypes */
282static void ati_remote_dump (unsigned char *data, unsigned int actual_length);
1da177e4
LT		 283static int ati_remote_open (struct input_dev *inputdev);
284static void ati_remote_close (struct input_dev *inputdev);
285static int ati_remote_sendpacket (struct ati_remote *ati_remote, u16 cmd, unsigned char *data);
286static void ati_remote_irq_out (struct urb *urb, struct pt_regs *regs);
287static void ati_remote_irq_in (struct urb *urb, struct pt_regs *regs);
288static void ati_remote_input_report (struct urb *urb, struct pt_regs *regs);
289static int ati_remote_initialize (struct ati_remote *ati_remote);
290static int ati_remote_probe (struct usb_interface *interface, const struct usb_device_id *id);
291static void ati_remote_disconnect (struct usb_interface *interface);
292
293/* usb specific object to register with the usb subsystem */
294static struct usb_driver ati_remote_driver = {
1da177e4
LT		 295 .name = "ati_remote",
296 .probe = ati_remote_probe,
297 .disconnect = ati_remote_disconnect,
298 .id_table = ati_remote_table,
299};
300
301/*
302 * ati_remote_dump_input
303 */
304static void ati_remote_dump(unsigned char *data, unsigned int len)
305{
306 if ((len == 1) && (data[0] != (unsigned char)0xff) && (data[0] != 0x00))
307 warn("Weird byte 0x%02x", data[0]);
308 else if (len == 4)
05f091ab 309 warn("Weird key %02x %02x %02x %02x",
1da177e4
LT		 310 data[0], data[1], data[2], data[3]);
311 else
312 warn("Weird data, len=%d %02x %02x %02x %02x %02x %02x ...",
313 len, data[0], data[1], data[2], data[3], data[4], data[5]);
314}
315
316/*
317 * ati_remote_open
318 */
319static int ati_remote_open(struct input_dev *inputdev)
320{
321 struct ati_remote *ati_remote = inputdev->private;
1da177e4
LT		 322
323 /* On first open, submit the read urb which was set up previously. */
324 ati_remote->irq_urb->dev = ati_remote->udev;
325 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) {
05f091ab 326 dev_err(&ati_remote->interface->dev,
1da177e4 327 "%s: usb_submit_urb failed!\n", __FUNCTION__);
65cde54b 328 return -EIO;
1da177e4
LT		 329 }
330
65cde54b 331 return 0;
1da177e4
LT		 332}
333
334/*
335 * ati_remote_close
336 */
337static void ati_remote_close(struct input_dev *inputdev)
338{
339 struct ati_remote *ati_remote = inputdev->private;
05f091ab 340
65cde54b 341 usb_kill_urb(ati_remote->irq_urb);
1da177e4
LT		 342}
343
344/*
345 * ati_remote_irq_out
346 */
347static void ati_remote_irq_out(struct urb *urb, struct pt_regs *regs)
348{
349 struct ati_remote *ati_remote = urb->context;
05f091ab 350
1da177e4
LT		 351 if (urb->status) {
352 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n",
353 __FUNCTION__, urb->status);
354 return;
355 }
05f091ab 356
1da177e4
LT		 357 ati_remote->send_flags |= SEND_FLAG_COMPLETE;
358 wmb();
359 wake_up(&ati_remote->wait);
360}
361
362/*
363 * ati_remote_sendpacket
05f091ab 364 *
1da177e4
LT		 365 * Used to send device initialization strings
366 */
367static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, unsigned char *data)
368{
369 int retval = 0;
05f091ab 370
1da177e4
LT		 371 /* Set up out_urb */
372 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd));
05f091ab 373 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd);
1da177e4
LT		 374
375 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1;
376 ati_remote->out_urb->dev = ati_remote->udev;
377 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS;
378
379 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC);
380 if (retval) {
05f091ab 381 dev_dbg(&ati_remote->interface->dev,
1da177e4
LT		 382 "sendpacket: usb_submit_urb failed: %d\n", retval);
383 return retval;
384 }
385
386 wait_event_timeout(ati_remote->wait,
387 ((ati_remote->out_urb->status != -EINPROGRESS) ||
05f091ab 388 (ati_remote->send_flags & SEND_FLAG_COMPLETE)),
1da177e4
LT		 389 HZ);
390 usb_kill_urb(ati_remote->out_urb);
05f091ab 391
1da177e4
LT		 392 return retval;
393}
394
395/*
396 * ati_remote_event_lookup
397 */
398static int ati_remote_event_lookup(int rem, unsigned char d1, unsigned char d2)
399{
400 int i;
401
402 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {
05f091ab
DT		 403 /*
404 * Decide if the table entry matches the remote input.
1da177e4
LT		 405 */
406 if ((((ati_remote_tbl[i].data1 & 0x0f) == (d1 & 0x0f))) &&
05f091ab
DT		 407 ((((ati_remote_tbl[i].data1 >> 4) -
408 (d1 >> 4) + rem) & 0x0f) == 0x0f) &&
1da177e4
LT		 409 (ati_remote_tbl[i].data2 == d2))
410 return i;
05f091ab 411
1da177e4
LT		 412 }
413 return -1;
414}
415
2ffc1cca
DT		 416/*
417 * ati_remote_compute_accel
418 *
419 * Implements acceleration curve for directional control pad
420 * If elapsed time since last event is > 1/4 second, user "stopped",
421 * so reset acceleration. Otherwise, user is probably holding the control
422 * pad down, so we increase acceleration, ramping up over two seconds to
423 * a maximum speed.
424 */
425static int ati_remote_compute_accel(struct ati_remote *ati_remote)
426{
427 static const char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
428 unsigned long now = jiffies;
429 int acc;
430
431 if (time_after(now, ati_remote->old_jiffies + msecs_to_jiffies(250))) {
432 acc = 1;
433 ati_remote->acc_jiffies = now;
434 }
435 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(125)))
436 acc = accel[0];
437 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(250)))
438 acc = accel[1];
439 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(500)))
440 acc = accel[2];
441 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1000)))
442 acc = accel[3];
443 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1500)))
444 acc = accel[4];
445 else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(2000)))
446 acc = accel[5];
447 else
448 acc = accel[6];
449
450 return acc;
451}
452
1da177e4
LT		 453/*
454 * ati_remote_report_input
455 */
05f091ab 456static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs)
1da177e4
LT		 457{
458 struct ati_remote *ati_remote = urb->context;
459 unsigned char *data= ati_remote->inbuf;
c5b7c7c3 460 struct input_dev *dev = ati_remote->idev;
1da177e4
LT		 461 int index, acc;
462 int remote_num;
05f091ab 463
1da177e4 464 /* Deal with strange looking inputs */
05f091ab 465 if ( (urb->actual_length != 4) || (data[0] != 0x14) ||
1da177e4
LT		 466 ((data[3] & 0x0f) != 0x00) ) {
467 ati_remote_dump(data, urb->actual_length);
468 return;
469 }
470
471 /* Mask unwanted remote channels. */
472 /* note: remote_num is 0-based, channel 1 on remote == 0 here */
473 remote_num = (data[3] >> 4) & 0x0f;
05f091ab 474 if (channel_mask & (1 << (remote_num + 1))) {
1da177e4
LT		 475 dbginfo(&ati_remote->interface->dev,
476 "Masked input from channel 0x%02x: data %02x,%02x, mask= 0x%02lx\n",
477 remote_num, data[1], data[2], channel_mask);
478 return;
479 }
480
481 /* Look up event code index in translation table */
482 index = ati_remote_event_lookup(remote_num, data[1], data[2]);
483 if (index < 0) {
05f091ab
DT		 484 dev_warn(&ati_remote->interface->dev,
485 "Unknown input from channel 0x%02x: data %02x,%02x\n",
1da177e4
LT		 486 remote_num, data[1], data[2]);
487 return;
05f091ab
DT		 488 }
489 dbginfo(&ati_remote->interface->dev,
1da177e4
LT		 490 "channel 0x%02x; data %02x,%02x; index %d; keycode %d\n",
491 remote_num, data[1], data[2], index, ati_remote_tbl[index].code);
05f091ab 492
1da177e4
LT		 493 if (ati_remote_tbl[index].kind == KIND_LITERAL) {
494 input_regs(dev, regs);
495 input_event(dev, ati_remote_tbl[index].type,
496 ati_remote_tbl[index].code,
497 ati_remote_tbl[index].value);
498 input_sync(dev);
05f091ab 499
1da177e4
LT		 500 ati_remote->old_jiffies = jiffies;
501 return;
502 }
05f091ab 503
1da177e4
LT		 504 if (ati_remote_tbl[index].kind == KIND_FILTERED) {
505 /* Filter duplicate events which happen "too close" together. */
c6698697
EH		 506 if (ati_remote->old_data[0] == data[1] &&
507 ati_remote->old_data[1] == data[2] &&
508 time_before(jiffies, ati_remote->old_jiffies + msecs_to_jiffies(repeat_filter))) {
1da177e4 509 ati_remote->repeat_count++;
05f091ab 510 } else {
1da177e4
LT		 511 ati_remote->repeat_count = 0;
512 }
05f091ab 513
1da177e4
LT		 514 ati_remote->old_data[0] = data[1];
515 ati_remote->old_data[1] = data[2];
516 ati_remote->old_jiffies = jiffies;
517
c6698697
EH		 518 if (ati_remote->repeat_count > 0 &&
519 ati_remote->repeat_count < 5)
1da177e4 520 return;
05f091ab 521
1da177e4
LT		 522
523 input_regs(dev, regs);
524 input_event(dev, ati_remote_tbl[index].type,
525 ati_remote_tbl[index].code, 1);
c3c38fbd 526 input_sync(dev);
1da177e4
LT		 527 input_event(dev, ati_remote_tbl[index].type,
528 ati_remote_tbl[index].code, 0);
529 input_sync(dev);
530
2ffc1cca 531 } else {
05f091ab 532
2ffc1cca
DT		 533 /*
534 * Other event kinds are from the directional control pad, and have an
535 * acceleration factor applied to them. Without this acceleration, the
536 * control pad is mostly unusable.
537 */
538 acc = ati_remote_compute_accel(ati_remote);
1da177e4 539
2ffc1cca
DT		 540 input_regs(dev, regs);
541 switch (ati_remote_tbl[index].kind) {
542 case KIND_ACCEL:
543 input_event(dev, ati_remote_tbl[index].type,
544 ati_remote_tbl[index].code,
545 ati_remote_tbl[index].value * acc);
546 break;
547 case KIND_LU:
548 input_report_rel(dev, REL_X, -acc);
549 input_report_rel(dev, REL_Y, -acc);
550 break;
551 case KIND_RU:
552 input_report_rel(dev, REL_X, acc);
553 input_report_rel(dev, REL_Y, -acc);
554 break;
555 case KIND_LD:
556 input_report_rel(dev, REL_X, -acc);
557 input_report_rel(dev, REL_Y, acc);
558 break;
559 case KIND_RD:
560 input_report_rel(dev, REL_X, acc);
561 input_report_rel(dev, REL_Y, acc);
562 break;
563 default:
564 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n",
565 ati_remote_tbl[index].kind);
566 }
567 input_sync(dev);
568
569 ati_remote->old_jiffies = jiffies;
570 ati_remote->old_data[0] = data[1];
571 ati_remote->old_data[1] = data[2];
572 }
1da177e4
LT		 573}
574
575/*
576 * ati_remote_irq_in
577 */
578static void ati_remote_irq_in(struct urb *urb, struct pt_regs *regs)
579{
580 struct ati_remote *ati_remote = urb->context;
581 int retval;
582
583 switch (urb->status) {
584 case 0: /* success */
585 ati_remote_input_report(urb, regs);
586 break;
587 case -ECONNRESET: /* unlink */
588 case -ENOENT:
589 case -ESHUTDOWN:
590 dev_dbg(&ati_remote->interface->dev, "%s: urb error status, unlink? \n",
591 __FUNCTION__);
05f091ab 592 return;
1da177e4 593 default: /* error */
05f091ab 594 dev_dbg(&ati_remote->interface->dev, "%s: Nonzero urb status %d\n",
1da177e4
LT		 595 __FUNCTION__, urb->status);
596 }
05f091ab 597
1da177e4
LT		 598 retval = usb_submit_urb(urb, SLAB_ATOMIC);
599 if (retval)
600 dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n",
601 __FUNCTION__, retval);
602}
603
604/*
c5b7c7c3 605 * ati_remote_alloc_buffers
1da177e4 606 */
c5b7c7c3
DT		 607static int ati_remote_alloc_buffers(struct usb_device *udev,
608 struct ati_remote *ati_remote)
1da177e4 609{
c5b7c7c3
DT		 610 ati_remote->inbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC,
611 &ati_remote->inbuf_dma);
612 if (!ati_remote->inbuf)
613 return -1;
1da177e4 614
c5b7c7c3
DT		 615 ati_remote->outbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC,
616 &ati_remote->outbuf_dma);
617 if (!ati_remote->outbuf)
618 return -1;
1da177e4 619
c5b7c7c3
DT		 620 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
621 if (!ati_remote->irq_urb)
622 return -1;
1da177e4 623
c5b7c7c3
DT		 624 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL);
625 if (!ati_remote->out_urb)
626 return -1;
05f091ab 627
c5b7c7c3
DT		 628 return 0;
629}
05f091ab 630
c5b7c7c3
DT		 631/*
632 * ati_remote_free_buffers
633 */
634static void ati_remote_free_buffers(struct ati_remote *ati_remote)
635{
1da177e4
LT		 636 if (ati_remote->irq_urb)
637 usb_free_urb(ati_remote->irq_urb);
05f091ab 638
1da177e4
LT		 639 if (ati_remote->out_urb)
640 usb_free_urb(ati_remote->out_urb);
641
c5b7c7c3
DT		 642 if (ati_remote->inbuf)
643 usb_buffer_free(ati_remote->udev, DATA_BUFSIZE,
644 ati_remote->inbuf, ati_remote->inbuf_dma);
645
646 if (ati_remote->outbuf)
647 usb_buffer_free(ati_remote->udev, DATA_BUFSIZE,
648 ati_remote->inbuf, ati_remote->outbuf_dma);
1da177e4
LT		 649}
650
651static void ati_remote_input_init(struct ati_remote *ati_remote)
652{
c5b7c7c3 653 struct input_dev *idev = ati_remote->idev;
1da177e4
LT		 654 int i;
655
656 idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
05f091ab 657 idev->keybit[LONG(BTN_MOUSE)] = ( BIT(BTN_LEFT) | BIT(BTN_RIGHT) |
1da177e4
LT		 658 BIT(BTN_SIDE) | BIT(BTN_EXTRA) );
659 idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
660 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++)
661 if (ati_remote_tbl[i].type == EV_KEY)
662 set_bit(ati_remote_tbl[i].code, idev->keybit);
05f091ab 663
1da177e4
LT		 664 idev->private = ati_remote;
665 idev->open = ati_remote_open;
666 idev->close = ati_remote_close;
05f091ab 667
1da177e4
LT		 668 idev->name = ati_remote->name;
669 idev->phys = ati_remote->phys;
05f091ab 670
16a334c0 671 usb_to_input_id(ati_remote->udev, &idev->id);
c5b7c7c3 672 idev->cdev.dev = &ati_remote->udev->dev;
1da177e4
LT		 673}
674
675static int ati_remote_initialize(struct ati_remote *ati_remote)
676{
677 struct usb_device *udev = ati_remote->udev;
678 int pipe, maxp;
05f091ab 679
1da177e4
LT		 680 init_waitqueue_head(&ati_remote->wait);
681
682 /* Set up irq_urb */
683 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
684 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
685 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
05f091ab
DT		 686
687 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
688 maxp, ati_remote_irq_in, ati_remote,
1da177e4
LT		 689 ati_remote->endpoint_in->bInterval);
690 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma;
691 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
05f091ab 692
1da177e4
LT		 693 /* Set up out_urb */
694 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
695 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
696 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
697
05f091ab
DT		 698 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
699 maxp, ati_remote_irq_out, ati_remote,
1da177e4
LT		 700 ati_remote->endpoint_out->bInterval);
701 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma;
702 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
703
704 /* send initialization strings */
705 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) ||
706 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) {
05f091ab 707 dev_err(&ati_remote->interface->dev,
1da177e4 708 "Initializing ati_remote hardware failed.\n");
c5b7c7c3 709 return -EIO;
1da177e4 710 }
05f091ab 711
1da177e4
LT		 712 return 0;
713}
714
715/*
716 * ati_remote_probe
717 */
718static int ati_remote_probe(struct usb_interface *interface, const struct usb_device_id *id)
719{
720 struct usb_device *udev = interface_to_usbdev(interface);
c5b7c7c3
DT		 721 struct usb_host_interface *iface_host = interface->cur_altsetting;
722 struct usb_endpoint_descriptor *endpoint_in, *endpoint_out;
723 struct ati_remote *ati_remote;
724 struct input_dev *input_dev;
725 int err = -ENOMEM;
1da177e4 726
1da177e4
LT		 727 if (iface_host->desc.bNumEndpoints != 2) {
728 err("%s: Unexpected desc.bNumEndpoints\n", __FUNCTION__);
c5b7c7c3 729 return -ENODEV;
1da177e4
LT		 730 }
731
c5b7c7c3
DT		 732 endpoint_in = &iface_host->endpoint[0].desc;
733 endpoint_out = &iface_host->endpoint[1].desc;
1da177e4 734
96642a2c
LFC		 735 if (!usb_endpoint_is_int_in(endpoint_in)) {
736 err("%s: Unexpected endpoint_in\n", __FUNCTION__);
c5b7c7c3 737 return -ENODEV;
1da177e4 738 }
c5b7c7c3 739 if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) {
1da177e4 740 err("%s: endpoint_in message size==0? \n", __FUNCTION__);
c5b7c7c3 741 return -ENODEV;
1da177e4
LT		 742 }
743
c5b7c7c3
DT		 744 ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL);
745 input_dev = input_allocate_device();
746 if (!ati_remote || !input_dev)
747 goto fail1;
1da177e4 748
c5b7c7c3
DT		 749 /* Allocate URB buffers, URBs */
750 if (ati_remote_alloc_buffers(udev, ati_remote))
751 goto fail2;
1da177e4 752
c5b7c7c3
DT		 753 ati_remote->endpoint_in = endpoint_in;
754 ati_remote->endpoint_out = endpoint_out;
755 ati_remote->udev = udev;
756 ati_remote->idev = input_dev;
757 ati_remote->interface = interface;
1da177e4 758
c5b7c7c3
DT		 759 usb_make_path(udev, ati_remote->phys, sizeof(ati_remote->phys));
760 strlcpy(ati_remote->phys, "/input0", sizeof(ati_remote->phys));
1da177e4 761
1da177e4 762 if (udev->manufacturer)
c5b7c7c3 763 strlcpy(ati_remote->name, udev->manufacturer, sizeof(ati_remote->name));
1da177e4
LT		 764
765 if (udev->product)
c5b7c7c3
DT		 766 snprintf(ati_remote->name, sizeof(ati_remote->name),
767 "%s %s", ati_remote->name, udev->product);
1da177e4
LT		 768
769 if (!strlen(ati_remote->name))
c5b7c7c3
DT		 770 snprintf(ati_remote->name, sizeof(ati_remote->name),
771 DRIVER_DESC "(%04x,%04x)",
05f091ab 772 le16_to_cpu(ati_remote->udev->descriptor.idVendor),
1da177e4
LT		 773 le16_to_cpu(ati_remote->udev->descriptor.idProduct));
774
c5b7c7c3
DT		 775 ati_remote_input_init(ati_remote);
776
1da177e4 777 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */
c5b7c7c3
DT		 778 err = ati_remote_initialize(ati_remote);
779 if (err)
780 goto fail3;
1da177e4
LT		 781
782 /* Set up and register input device */
c5b7c7c3 783 input_register_device(ati_remote->idev);
1da177e4
LT		 784
785 usb_set_intfdata(interface, ati_remote);
c5b7c7c3 786 return 0;
05f091ab 787
c5b7c7c3
DT		 788fail3: usb_kill_urb(ati_remote->irq_urb);
789 usb_kill_urb(ati_remote->out_urb);
790fail2: ati_remote_free_buffers(ati_remote);
791fail1: input_free_device(input_dev);
792 kfree(ati_remote);
793 return err;
1da177e4
LT		 794}
795
796/*
797 * ati_remote_disconnect
798 */
799static void ati_remote_disconnect(struct usb_interface *interface)
800{
801 struct ati_remote *ati_remote;
802
1da177e4
LT		 803 ati_remote = usb_get_intfdata(interface);
804 usb_set_intfdata(interface, NULL);
805 if (!ati_remote) {
806 warn("%s - null device?\n", __FUNCTION__);
807 return;
808 }
05f091ab 809
c5b7c7c3
DT		 810 usb_kill_urb(ati_remote->irq_urb);
811 usb_kill_urb(ati_remote->out_urb);
812 input_unregister_device(ati_remote->idev);
813 ati_remote_free_buffers(ati_remote);
814 kfree(ati_remote);
1da177e4
LT		 815}
816
817/*
818 * ati_remote_init
819 */
820static int __init ati_remote_init(void)
821{
822 int result;
05f091ab 823
1da177e4
LT		 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 */
836static void __exit ati_remote_exit(void)
837{
838 usb_deregister(&ati_remote_driver);
839}
840
05f091ab
DT		 841/*
842 * module specification
1da177e4
LT		 843 */
844
845module_init(ati_remote_init);
846module_exit(ati_remote_exit);
847
848MODULE_AUTHOR(DRIVER_AUTHOR);
849MODULE_DESCRIPTION(DRIVER_DESC);
850MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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