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 125static unsigned long channel_mask; 126module_param(channel_mask, ulong, 0644); 127MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore"); 128 129static int debug; 130module_param(debug, int, 0644); 131MODULE_PARM_DESC(debug, "Enable extra debug messages and information"); 132 133static int repeat_filter = FILTER_TIME; 134module_param(repeat_filter, int, 0644); 135MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec"); 136 137static int repeat_delay = REPEAT_DELAY; 138module_param(repeat_delay, int, 0644); 139MODULE_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 145static 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 152MODULE_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 */ 162static char init1[] = { 0x01, 0x00, 0x20, 0x14 }; 163static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 }; 164 165struct 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. */ 204static 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 */ 289static void ati_remote_dump (unsigned char *data, unsigned int actual_length); 290static int ati_remote_open (struct input_dev *inputdev); 291static void ati_remote_close (struct input_dev *inputdev); 292static int ati_remote_sendpacket (struct ati_remote *ati_remote, u16 cmd, unsigned char *data); 293static void ati_remote_irq_out (struct urb *urb); 294static void ati_remote_irq_in (struct urb *urb); 295static void ati_remote_input_report (struct urb *urb); 296static int ati_remote_initialize (struct ati_remote *ati_remote); 297static int ati_remote_probe (struct usb_interface *interface, const struct usb_device_id *id); 298static void ati_remote_disconnect (struct usb_interface *interface); 299 300/* usb specific object to register with the usb subsystem */ 301static 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 */ 311static 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 */ 326static 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 */ 344static 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 */ 354static 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 */ 374static 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 */ 405static 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 */ 432static 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 */ 463static 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 */ 592static 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 */ 621static 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 */ 648static 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 660static 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 685static 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 */ 728static 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 */ 811static 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 */ 832static 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 */ 848static void __exit ati_remote_exit(void) 849{ 850 usb_deregister(&ati_remote_driver); 851} 852 853/* 854 * module specification 855 */ 856 857module_init(ati_remote_init); 858module_exit(ati_remote_exit); 859 860MODULE_AUTHOR(DRIVER_AUTHOR); 861MODULE_DESCRIPTION(DRIVER_DESC); 862MODULE_LICENSE("GPL"); 863