1 /* 2 * USB ATI Remote support 3 * 4 * Copyright (c) 2011, 2012 Anssi Hannula <anssi.hannula@iki.fi> 5 * Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net> 6 * Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev 7 * 8 * This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including 9 * porting to the 2.6 kernel interfaces, along with other modification 10 * to better match the style of the existing usb/input drivers. However, the 11 * protocol and hardware handling is essentially unchanged from 2.1.1. 12 * 13 * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by 14 * Vojtech Pavlik. 15 * 16 * Changes: 17 * 18 * Feb 2004: Torrey Hoffman <thoffman@arnor.net> 19 * Version 2.2.0 20 * Jun 2004: Torrey Hoffman <thoffman@arnor.net> 21 * Version 2.2.1 22 * Added key repeat support contributed by: 23 * Vincent Vanackere <vanackere@lif.univ-mrs.fr> 24 * Added support for the "Lola" remote contributed by: 25 * Seth Cohn <sethcohn@yahoo.com> 26 * 27 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 28 * 29 * This program is free software; you can redistribute it and/or modify 30 * it under the terms of the GNU General Public License as published by 31 * the Free Software Foundation; either version 2 of the License, or 32 * (at your option) any later version. 33 * 34 * This program is distributed in the hope that it will be useful, 35 * but WITHOUT ANY WARRANTY; without even the implied warranty of 36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 37 * GNU General Public License for more details. 38 * 39 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 40 * 41 * Hardware & software notes 42 * 43 * These remote controls are distributed by ATI as part of their 44 * "All-In-Wonder" video card packages. The receiver self-identifies as a 45 * "USB Receiver" with manufacturer "X10 Wireless Technology Inc". 46 * 47 * The "Lola" remote is available from X10. See: 48 * http://www.x10.com/products/lola_sg1.htm 49 * The Lola is similar to the ATI remote but has no mouse support, and slightly 50 * different keys. 51 * 52 * It is possible to use multiple receivers and remotes on multiple computers 53 * simultaneously by configuring them to use specific channels. 54 * 55 * The RF protocol used by the remote supports 16 distinct channels, 1 to 16. 56 * Actually, it may even support more, at least in some revisions of the 57 * hardware. 58 * 59 * Each remote can be configured to transmit on one channel as follows: 60 * - Press and hold the "hand icon" button. 61 * - When the red LED starts to blink, let go of the "hand icon" button. 62 * - When it stops blinking, input the channel code as two digits, from 01 63 * to 16, and press the hand icon again. 64 * 65 * The timing can be a little tricky. Try loading the module with debug=1 66 * to have the kernel print out messages about the remote control number 67 * and mask. Note: debugging prints remote numbers as zero-based hexadecimal. 68 * 69 * The driver has a "channel_mask" parameter. This bitmask specifies which 70 * channels will be ignored by the module. To mask out channels, just add 71 * all the 2^channel_number values together. 72 * 73 * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote 74 * ignore signals coming from remote controls transmitting on channel 4, but 75 * accept all other channels. 76 * 77 * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be 78 * ignored. 79 * 80 * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this 81 * parameter are unused. 82 * 83 */ 84 85 #include <linux/kernel.h> 86 #include <linux/errno.h> 87 #include <linux/init.h> 88 #include <linux/slab.h> 89 #include <linux/module.h> 90 #include <linux/mutex.h> 91 #include <linux/usb/input.h> 92 #include <linux/wait.h> 93 #include <linux/jiffies.h> 94 #include <media/rc-core.h> 95 96 /* 97 * Module and Version Information, Module Parameters 98 */ 99 100 #define ATI_REMOTE_VENDOR_ID 0x0bc7 101 #define LOLA_REMOTE_PRODUCT_ID 0x0002 102 #define LOLA2_REMOTE_PRODUCT_ID 0x0003 103 #define ATI_REMOTE_PRODUCT_ID 0x0004 104 #define NVIDIA_REMOTE_PRODUCT_ID 0x0005 105 #define MEDION_REMOTE_PRODUCT_ID 0x0006 106 #define FIREFLY_REMOTE_PRODUCT_ID 0x0008 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 */ 114 115 /* 116 * Duplicate event filtering time. 117 * Sequential, identical KIND_FILTERED inputs with less than 118 * FILTER_TIME milliseconds between them are considered as repeat 119 * events. The hardware generates 5 events for the first keypress 120 * and we have to take this into account for an accurate repeat 121 * behaviour. 122 */ 123 #define FILTER_TIME 60 /* msec */ 124 #define REPEAT_DELAY 500 /* msec */ 125 126 static unsigned long channel_mask; 127 module_param(channel_mask, ulong, 0644); 128 MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore"); 129 130 static int debug; 131 module_param(debug, int, 0644); 132 MODULE_PARM_DESC(debug, "Enable extra debug messages and information"); 133 134 static int repeat_filter = FILTER_TIME; 135 module_param(repeat_filter, int, 0644); 136 MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec"); 137 138 static int repeat_delay = REPEAT_DELAY; 139 module_param(repeat_delay, int, 0644); 140 MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec"); 141 142 static bool mouse = true; 143 module_param(mouse, bool, 0444); 144 MODULE_PARM_DESC(mouse, "Enable mouse device, default = yes"); 145 146 #define dbginfo(dev, format, arg...) \ 147 do { if (debug) dev_info(dev , format , ## arg); } while (0) 148 #undef err 149 #define err(format, arg...) printk(KERN_ERR format , ## arg) 150 151 struct ati_receiver_type { 152 /* either default_keymap or get_default_keymap should be set */ 153 const char *default_keymap; 154 const char *(*get_default_keymap)(struct usb_interface *interface); 155 }; 156 157 static const char *get_medion_keymap(struct usb_interface *interface) 158 { 159 struct usb_device *udev = interface_to_usbdev(interface); 160 161 /* 162 * There are many different Medion remotes shipped with a receiver 163 * with the same usb id, but the receivers have subtle differences 164 * in the USB descriptors allowing us to detect them. 165 */ 166 167 if (udev->manufacturer && udev->product) { 168 if (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP) { 169 170 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") 171 && !strcmp(udev->product, "USB Receiver")) 172 return RC_MAP_MEDION_X10_DIGITAINER; 173 174 if (!strcmp(udev->manufacturer, "X10 WTI") 175 && !strcmp(udev->product, "RF receiver")) 176 return RC_MAP_MEDION_X10_OR2X; 177 } else { 178 179 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") 180 && !strcmp(udev->product, "USB Receiver")) 181 return RC_MAP_MEDION_X10; 182 } 183 } 184 185 dev_info(&interface->dev, 186 "Unknown Medion X10 receiver, using default ati_remote Medion keymap\n"); 187 188 return RC_MAP_MEDION_X10; 189 } 190 191 static const struct ati_receiver_type type_ati = { 192 .default_keymap = RC_MAP_ATI_X10 193 }; 194 static const struct ati_receiver_type type_medion = { 195 .get_default_keymap = get_medion_keymap 196 }; 197 static const struct ati_receiver_type type_firefly = { 198 .default_keymap = RC_MAP_SNAPSTREAM_FIREFLY 199 }; 200 201 static struct usb_device_id ati_remote_table[] = { 202 { 203 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID), 204 .driver_info = (unsigned long)&type_ati 205 }, 206 { 207 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID), 208 .driver_info = (unsigned long)&type_ati 209 }, 210 { 211 USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID), 212 .driver_info = (unsigned long)&type_ati 213 }, 214 { 215 USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID), 216 .driver_info = (unsigned long)&type_ati 217 }, 218 { 219 USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID), 220 .driver_info = (unsigned long)&type_medion 221 }, 222 { 223 USB_DEVICE(ATI_REMOTE_VENDOR_ID, FIREFLY_REMOTE_PRODUCT_ID), 224 .driver_info = (unsigned long)&type_firefly 225 }, 226 {} /* Terminating entry */ 227 }; 228 229 MODULE_DEVICE_TABLE(usb, ati_remote_table); 230 231 /* Get hi and low bytes of a 16-bits int */ 232 #define HI(a) ((unsigned char)((a) >> 8)) 233 #define LO(a) ((unsigned char)((a) & 0xff)) 234 235 #define SEND_FLAG_IN_PROGRESS 1 236 #define SEND_FLAG_COMPLETE 2 237 238 /* Device initialization strings */ 239 static char init1[] = { 0x01, 0x00, 0x20, 0x14 }; 240 static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 }; 241 242 struct ati_remote { 243 struct input_dev *idev; 244 struct rc_dev *rdev; 245 struct usb_device *udev; 246 struct usb_interface *interface; 247 248 struct urb *irq_urb; 249 struct urb *out_urb; 250 struct usb_endpoint_descriptor *endpoint_in; 251 struct usb_endpoint_descriptor *endpoint_out; 252 unsigned char *inbuf; 253 unsigned char *outbuf; 254 dma_addr_t inbuf_dma; 255 dma_addr_t outbuf_dma; 256 257 unsigned char old_data; /* Detect duplicate events */ 258 unsigned long old_jiffies; 259 unsigned long acc_jiffies; /* handle acceleration */ 260 unsigned long first_jiffies; 261 262 unsigned int repeat_count; 263 264 char rc_name[NAME_BUFSIZE]; 265 char rc_phys[NAME_BUFSIZE]; 266 char mouse_name[NAME_BUFSIZE]; 267 char mouse_phys[NAME_BUFSIZE]; 268 269 wait_queue_head_t wait; 270 int send_flags; 271 272 int users; /* 0-2, users are rc and input */ 273 struct mutex open_mutex; 274 }; 275 276 /* "Kinds" of messages sent from the hardware to the driver. */ 277 #define KIND_END 0 278 #define KIND_LITERAL 1 /* Simply pass to input system as EV_KEY */ 279 #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */ 280 #define KIND_ACCEL 3 /* Translate to EV_REL mouse-move events */ 281 282 /* Translation table from hardware messages to input events. */ 283 static const struct { 284 unsigned char kind; 285 unsigned char data; /* Raw key code from remote */ 286 unsigned short code; /* Input layer translation */ 287 } ati_remote_tbl[] = { 288 /* Directional control pad axes. Code is xxyy */ 289 {KIND_ACCEL, 0x70, 0xff00}, /* left */ 290 {KIND_ACCEL, 0x71, 0x0100}, /* right */ 291 {KIND_ACCEL, 0x72, 0x00ff}, /* up */ 292 {KIND_ACCEL, 0x73, 0x0001}, /* down */ 293 294 /* Directional control pad diagonals */ 295 {KIND_ACCEL, 0x74, 0xffff}, /* left up */ 296 {KIND_ACCEL, 0x75, 0x01ff}, /* right up */ 297 {KIND_ACCEL, 0x77, 0xff01}, /* left down */ 298 {KIND_ACCEL, 0x76, 0x0101}, /* right down */ 299 300 /* "Mouse button" buttons. The code below uses the fact that the 301 * lsbit of the raw code is a down/up indicator. */ 302 {KIND_LITERAL, 0x78, BTN_LEFT}, /* left btn down */ 303 {KIND_LITERAL, 0x79, BTN_LEFT}, /* left btn up */ 304 {KIND_LITERAL, 0x7c, BTN_RIGHT},/* right btn down */ 305 {KIND_LITERAL, 0x7d, BTN_RIGHT},/* right btn up */ 306 307 /* Artificial "doubleclick" events are generated by the hardware. 308 * They are mapped to the "side" and "extra" mouse buttons here. */ 309 {KIND_FILTERED, 0x7a, BTN_SIDE}, /* left dblclick */ 310 {KIND_FILTERED, 0x7e, BTN_EXTRA},/* right dblclick */ 311 312 /* Non-mouse events are handled by rc-core */ 313 {KIND_END, 0x00, 0} 314 }; 315 316 /* 317 * ati_remote_dump_input 318 */ 319 static void ati_remote_dump(struct device *dev, unsigned char *data, 320 unsigned int len) 321 { 322 if (len == 1) { 323 if (data[0] != (unsigned char)0xff && data[0] != 0x00) 324 dev_warn(dev, "Weird byte 0x%02x\n", data[0]); 325 } else if (len == 4) 326 dev_warn(dev, "Weird key %*ph\n", 4, data); 327 else 328 dev_warn(dev, "Weird data, len=%d %*ph ...\n", len, 6, data); 329 } 330 331 /* 332 * ati_remote_open 333 */ 334 static int ati_remote_open(struct ati_remote *ati_remote) 335 { 336 int err = 0; 337 338 mutex_lock(&ati_remote->open_mutex); 339 340 if (ati_remote->users++ != 0) 341 goto out; /* one was already active */ 342 343 /* On first open, submit the read urb which was set up previously. */ 344 ati_remote->irq_urb->dev = ati_remote->udev; 345 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) { 346 dev_err(&ati_remote->interface->dev, 347 "%s: usb_submit_urb failed!\n", __func__); 348 err = -EIO; 349 } 350 351 out: mutex_unlock(&ati_remote->open_mutex); 352 return err; 353 } 354 355 /* 356 * ati_remote_close 357 */ 358 static void ati_remote_close(struct ati_remote *ati_remote) 359 { 360 mutex_lock(&ati_remote->open_mutex); 361 if (--ati_remote->users == 0) 362 usb_kill_urb(ati_remote->irq_urb); 363 mutex_unlock(&ati_remote->open_mutex); 364 } 365 366 static int ati_remote_input_open(struct input_dev *inputdev) 367 { 368 struct ati_remote *ati_remote = input_get_drvdata(inputdev); 369 return ati_remote_open(ati_remote); 370 } 371 372 static void ati_remote_input_close(struct input_dev *inputdev) 373 { 374 struct ati_remote *ati_remote = input_get_drvdata(inputdev); 375 ati_remote_close(ati_remote); 376 } 377 378 static int ati_remote_rc_open(struct rc_dev *rdev) 379 { 380 struct ati_remote *ati_remote = rdev->priv; 381 return ati_remote_open(ati_remote); 382 } 383 384 static void ati_remote_rc_close(struct rc_dev *rdev) 385 { 386 struct ati_remote *ati_remote = rdev->priv; 387 ati_remote_close(ati_remote); 388 } 389 390 /* 391 * ati_remote_irq_out 392 */ 393 static void ati_remote_irq_out(struct urb *urb) 394 { 395 struct ati_remote *ati_remote = urb->context; 396 397 if (urb->status) { 398 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n", 399 __func__, urb->status); 400 return; 401 } 402 403 ati_remote->send_flags |= SEND_FLAG_COMPLETE; 404 wmb(); 405 wake_up(&ati_remote->wait); 406 } 407 408 /* 409 * ati_remote_sendpacket 410 * 411 * Used to send device initialization strings 412 */ 413 static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, 414 unsigned char *data) 415 { 416 int retval = 0; 417 418 /* Set up out_urb */ 419 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd)); 420 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd); 421 422 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1; 423 ati_remote->out_urb->dev = ati_remote->udev; 424 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS; 425 426 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC); 427 if (retval) { 428 dev_dbg(&ati_remote->interface->dev, 429 "sendpacket: usb_submit_urb failed: %d\n", retval); 430 return retval; 431 } 432 433 wait_event_timeout(ati_remote->wait, 434 ((ati_remote->out_urb->status != -EINPROGRESS) || 435 (ati_remote->send_flags & SEND_FLAG_COMPLETE)), 436 HZ); 437 usb_kill_urb(ati_remote->out_urb); 438 439 return retval; 440 } 441 442 struct accel_times { 443 const char value; 444 unsigned int msecs; 445 }; 446 447 static const struct accel_times accel[] = { 448 { 1, 125 }, 449 { 2, 250 }, 450 { 4, 500 }, 451 { 6, 1000 }, 452 { 9, 1500 }, 453 { 13, 2000 }, 454 { 20, 0 }, 455 }; 456 457 /* 458 * ati_remote_compute_accel 459 * 460 * Implements acceleration curve for directional control pad 461 * If elapsed time since last event is > 1/4 second, user "stopped", 462 * so reset acceleration. Otherwise, user is probably holding the control 463 * pad down, so we increase acceleration, ramping up over two seconds to 464 * a maximum speed. 465 */ 466 static int ati_remote_compute_accel(struct ati_remote *ati_remote) 467 { 468 unsigned long now = jiffies, reset_time; 469 int i; 470 471 reset_time = msecs_to_jiffies(250); 472 473 if (time_after(now, ati_remote->old_jiffies + reset_time)) { 474 ati_remote->acc_jiffies = now; 475 return 1; 476 } 477 for (i = 0; i < ARRAY_SIZE(accel) - 1; i++) { 478 unsigned long timeout = msecs_to_jiffies(accel[i].msecs); 479 480 if (time_before(now, ati_remote->acc_jiffies + timeout)) 481 return accel[i].value; 482 } 483 return accel[i].value; 484 } 485 486 /* 487 * ati_remote_report_input 488 */ 489 static void ati_remote_input_report(struct urb *urb) 490 { 491 struct ati_remote *ati_remote = urb->context; 492 unsigned char *data= ati_remote->inbuf; 493 struct input_dev *dev = ati_remote->idev; 494 int index = -1; 495 int remote_num; 496 unsigned char scancode; 497 u32 wheel_keycode = KEY_RESERVED; 498 int i; 499 500 /* 501 * data[0] = 0x14 502 * data[1] = data[2] + data[3] + 0xd5 (a checksum byte) 503 * data[2] = the key code (with toggle bit in MSB with some models) 504 * data[3] = channel << 4 (the low 4 bits must be zero) 505 */ 506 507 /* Deal with strange looking inputs */ 508 if ( urb->actual_length != 4 || data[0] != 0x14 || 509 data[1] != (unsigned char)(data[2] + data[3] + 0xD5) || 510 (data[3] & 0x0f) != 0x00) { 511 ati_remote_dump(&urb->dev->dev, data, urb->actual_length); 512 return; 513 } 514 515 if (data[1] != ((data[2] + data[3] + 0xd5) & 0xff)) { 516 dbginfo(&ati_remote->interface->dev, 517 "wrong checksum in input: %*ph\n", 4, data); 518 return; 519 } 520 521 /* Mask unwanted remote channels. */ 522 /* note: remote_num is 0-based, channel 1 on remote == 0 here */ 523 remote_num = (data[3] >> 4) & 0x0f; 524 if (channel_mask & (1 << (remote_num + 1))) { 525 dbginfo(&ati_remote->interface->dev, 526 "Masked input from channel 0x%02x: data %02x, mask= 0x%02lx\n", 527 remote_num, data[2], channel_mask); 528 return; 529 } 530 531 /* 532 * MSB is a toggle code, though only used by some devices 533 * (e.g. SnapStream Firefly) 534 */ 535 scancode = data[2] & 0x7f; 536 537 dbginfo(&ati_remote->interface->dev, 538 "channel 0x%02x; key data %02x, scancode %02x\n", 539 remote_num, data[2], scancode); 540 541 if (scancode >= 0x70) { 542 /* 543 * This is either a mouse or scrollwheel event, depending on 544 * the remote/keymap. 545 * Get the keycode assigned to scancode 0x78/0x70. If it is 546 * set, assume this is a scrollwheel up/down event. 547 */ 548 wheel_keycode = rc_g_keycode_from_table(ati_remote->rdev, 549 scancode & 0x78); 550 551 if (wheel_keycode == KEY_RESERVED) { 552 /* scrollwheel was not mapped, assume mouse */ 553 554 /* Look up event code index in the mouse translation 555 * table. 556 */ 557 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) { 558 if (scancode == ati_remote_tbl[i].data) { 559 index = i; 560 break; 561 } 562 } 563 } 564 } 565 566 if (index >= 0 && ati_remote_tbl[index].kind == KIND_LITERAL) { 567 /* 568 * The lsbit of the raw key code is a down/up flag. 569 * Invert it to match the input layer's conventions. 570 */ 571 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 572 !(data[2] & 1)); 573 574 ati_remote->old_jiffies = jiffies; 575 576 } else if (index < 0 || ati_remote_tbl[index].kind == KIND_FILTERED) { 577 unsigned long now = jiffies; 578 579 /* Filter duplicate events which happen "too close" together. */ 580 if (ati_remote->old_data == data[2] && 581 time_before(now, ati_remote->old_jiffies + 582 msecs_to_jiffies(repeat_filter))) { 583 ati_remote->repeat_count++; 584 } else { 585 ati_remote->repeat_count = 0; 586 ati_remote->first_jiffies = now; 587 } 588 589 ati_remote->old_jiffies = now; 590 591 /* Ensure we skip at least the 4 first duplicate events 592 * (generated by a single keypress), and continue skipping 593 * until repeat_delay msecs have passed. 594 */ 595 if (ati_remote->repeat_count > 0 && 596 (ati_remote->repeat_count < 5 || 597 time_before(now, ati_remote->first_jiffies + 598 msecs_to_jiffies(repeat_delay)))) 599 return; 600 601 if (index >= 0) { 602 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 1); 603 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 0); 604 } else { 605 /* Not a mouse event, hand it to rc-core. */ 606 int count = 1; 607 608 if (wheel_keycode != KEY_RESERVED) { 609 /* 610 * This is a scrollwheel event, send the 611 * scroll up (0x78) / down (0x70) scancode 612 * repeatedly as many times as indicated by 613 * rest of the scancode. 614 */ 615 count = (scancode & 0x07) + 1; 616 scancode &= 0x78; 617 } 618 619 while (count--) { 620 /* 621 * We don't use the rc-core repeat handling yet as 622 * it would cause ghost repeats which would be a 623 * regression for this driver. 624 */ 625 rc_keydown_notimeout(ati_remote->rdev, 626 RC_PROTO_OTHER, 627 scancode, data[2]); 628 rc_keyup(ati_remote->rdev); 629 } 630 goto nosync; 631 } 632 633 } else if (ati_remote_tbl[index].kind == KIND_ACCEL) { 634 signed char dx = ati_remote_tbl[index].code >> 8; 635 signed char dy = ati_remote_tbl[index].code & 255; 636 637 /* 638 * Other event kinds are from the directional control pad, and 639 * have an acceleration factor applied to them. Without this 640 * acceleration, the control pad is mostly unusable. 641 */ 642 int acc = ati_remote_compute_accel(ati_remote); 643 if (dx) 644 input_report_rel(dev, REL_X, dx * acc); 645 if (dy) 646 input_report_rel(dev, REL_Y, dy * acc); 647 ati_remote->old_jiffies = jiffies; 648 649 } else { 650 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n", 651 ati_remote_tbl[index].kind); 652 return; 653 } 654 input_sync(dev); 655 nosync: 656 ati_remote->old_data = data[2]; 657 } 658 659 /* 660 * ati_remote_irq_in 661 */ 662 static void ati_remote_irq_in(struct urb *urb) 663 { 664 struct ati_remote *ati_remote = urb->context; 665 int retval; 666 667 switch (urb->status) { 668 case 0: /* success */ 669 ati_remote_input_report(urb); 670 break; 671 case -ECONNRESET: /* unlink */ 672 case -ENOENT: 673 case -ESHUTDOWN: 674 dev_dbg(&ati_remote->interface->dev, 675 "%s: urb error status, unlink?\n", 676 __func__); 677 return; 678 default: /* error */ 679 dev_dbg(&ati_remote->interface->dev, 680 "%s: Nonzero urb status %d\n", 681 __func__, urb->status); 682 } 683 684 retval = usb_submit_urb(urb, GFP_ATOMIC); 685 if (retval) 686 dev_err(&ati_remote->interface->dev, 687 "%s: usb_submit_urb()=%d\n", 688 __func__, retval); 689 } 690 691 /* 692 * ati_remote_alloc_buffers 693 */ 694 static int ati_remote_alloc_buffers(struct usb_device *udev, 695 struct ati_remote *ati_remote) 696 { 697 ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, 698 &ati_remote->inbuf_dma); 699 if (!ati_remote->inbuf) 700 return -1; 701 702 ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, 703 &ati_remote->outbuf_dma); 704 if (!ati_remote->outbuf) 705 return -1; 706 707 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL); 708 if (!ati_remote->irq_urb) 709 return -1; 710 711 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL); 712 if (!ati_remote->out_urb) 713 return -1; 714 715 return 0; 716 } 717 718 /* 719 * ati_remote_free_buffers 720 */ 721 static void ati_remote_free_buffers(struct ati_remote *ati_remote) 722 { 723 usb_free_urb(ati_remote->irq_urb); 724 usb_free_urb(ati_remote->out_urb); 725 726 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, 727 ati_remote->inbuf, ati_remote->inbuf_dma); 728 729 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, 730 ati_remote->outbuf, ati_remote->outbuf_dma); 731 } 732 733 static void ati_remote_input_init(struct ati_remote *ati_remote) 734 { 735 struct input_dev *idev = ati_remote->idev; 736 int i; 737 738 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 739 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 740 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA); 741 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 742 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) 743 if (ati_remote_tbl[i].kind == KIND_LITERAL || 744 ati_remote_tbl[i].kind == KIND_FILTERED) 745 __set_bit(ati_remote_tbl[i].code, idev->keybit); 746 747 input_set_drvdata(idev, ati_remote); 748 749 idev->open = ati_remote_input_open; 750 idev->close = ati_remote_input_close; 751 752 idev->name = ati_remote->mouse_name; 753 idev->phys = ati_remote->mouse_phys; 754 755 usb_to_input_id(ati_remote->udev, &idev->id); 756 idev->dev.parent = &ati_remote->interface->dev; 757 } 758 759 static void ati_remote_rc_init(struct ati_remote *ati_remote) 760 { 761 struct rc_dev *rdev = ati_remote->rdev; 762 763 rdev->priv = ati_remote; 764 rdev->allowed_protocols = RC_PROTO_BIT_OTHER; 765 rdev->driver_name = "ati_remote"; 766 767 rdev->open = ati_remote_rc_open; 768 rdev->close = ati_remote_rc_close; 769 770 rdev->device_name = ati_remote->rc_name; 771 rdev->input_phys = ati_remote->rc_phys; 772 773 usb_to_input_id(ati_remote->udev, &rdev->input_id); 774 rdev->dev.parent = &ati_remote->interface->dev; 775 } 776 777 static int ati_remote_initialize(struct ati_remote *ati_remote) 778 { 779 struct usb_device *udev = ati_remote->udev; 780 int pipe, maxp; 781 782 init_waitqueue_head(&ati_remote->wait); 783 784 /* Set up irq_urb */ 785 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress); 786 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); 787 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; 788 789 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf, 790 maxp, ati_remote_irq_in, ati_remote, 791 ati_remote->endpoint_in->bInterval); 792 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma; 793 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 794 795 /* Set up out_urb */ 796 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress); 797 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); 798 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; 799 800 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf, 801 maxp, ati_remote_irq_out, ati_remote, 802 ati_remote->endpoint_out->bInterval); 803 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma; 804 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 805 806 /* send initialization strings */ 807 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) || 808 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) { 809 dev_err(&ati_remote->interface->dev, 810 "Initializing ati_remote hardware failed.\n"); 811 return -EIO; 812 } 813 814 return 0; 815 } 816 817 /* 818 * ati_remote_probe 819 */ 820 static int ati_remote_probe(struct usb_interface *interface, 821 const struct usb_device_id *id) 822 { 823 struct usb_device *udev = interface_to_usbdev(interface); 824 struct usb_host_interface *iface_host = interface->cur_altsetting; 825 struct usb_endpoint_descriptor *endpoint_in, *endpoint_out; 826 struct ati_receiver_type *type = (struct ati_receiver_type *)id->driver_info; 827 struct ati_remote *ati_remote; 828 struct input_dev *input_dev; 829 struct rc_dev *rc_dev; 830 int err = -ENOMEM; 831 832 if (iface_host->desc.bNumEndpoints != 2) { 833 err("%s: Unexpected desc.bNumEndpoints\n", __func__); 834 return -ENODEV; 835 } 836 837 endpoint_in = &iface_host->endpoint[0].desc; 838 endpoint_out = &iface_host->endpoint[1].desc; 839 840 if (!usb_endpoint_is_int_in(endpoint_in)) { 841 err("%s: Unexpected endpoint_in\n", __func__); 842 return -ENODEV; 843 } 844 if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) { 845 err("%s: endpoint_in message size==0? \n", __func__); 846 return -ENODEV; 847 } 848 849 ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL); 850 rc_dev = rc_allocate_device(RC_DRIVER_SCANCODE); 851 if (!ati_remote || !rc_dev) 852 goto exit_free_dev_rdev; 853 854 /* Allocate URB buffers, URBs */ 855 if (ati_remote_alloc_buffers(udev, ati_remote)) 856 goto exit_free_buffers; 857 858 ati_remote->endpoint_in = endpoint_in; 859 ati_remote->endpoint_out = endpoint_out; 860 ati_remote->udev = udev; 861 ati_remote->rdev = rc_dev; 862 ati_remote->interface = interface; 863 864 usb_make_path(udev, ati_remote->rc_phys, sizeof(ati_remote->rc_phys)); 865 strlcpy(ati_remote->mouse_phys, ati_remote->rc_phys, 866 sizeof(ati_remote->mouse_phys)); 867 868 strlcat(ati_remote->rc_phys, "/input0", sizeof(ati_remote->rc_phys)); 869 strlcat(ati_remote->mouse_phys, "/input1", sizeof(ati_remote->mouse_phys)); 870 871 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), "%s%s%s", 872 udev->manufacturer ?: "", 873 udev->manufacturer && udev->product ? " " : "", 874 udev->product ?: ""); 875 876 if (!strlen(ati_remote->rc_name)) 877 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), 878 DRIVER_DESC "(%04x,%04x)", 879 le16_to_cpu(ati_remote->udev->descriptor.idVendor), 880 le16_to_cpu(ati_remote->udev->descriptor.idProduct)); 881 882 snprintf(ati_remote->mouse_name, sizeof(ati_remote->mouse_name), 883 "%s mouse", ati_remote->rc_name); 884 885 rc_dev->map_name = RC_MAP_ATI_X10; /* default map */ 886 887 /* set default keymap according to receiver model */ 888 if (type) { 889 if (type->default_keymap) 890 rc_dev->map_name = type->default_keymap; 891 else if (type->get_default_keymap) 892 rc_dev->map_name = type->get_default_keymap(interface); 893 } 894 895 ati_remote_rc_init(ati_remote); 896 mutex_init(&ati_remote->open_mutex); 897 898 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */ 899 err = ati_remote_initialize(ati_remote); 900 if (err) 901 goto exit_kill_urbs; 902 903 /* Set up and register rc device */ 904 err = rc_register_device(ati_remote->rdev); 905 if (err) 906 goto exit_kill_urbs; 907 908 /* Set up and register mouse input device */ 909 if (mouse) { 910 input_dev = input_allocate_device(); 911 if (!input_dev) { 912 err = -ENOMEM; 913 goto exit_unregister_device; 914 } 915 916 ati_remote->idev = input_dev; 917 ati_remote_input_init(ati_remote); 918 err = input_register_device(input_dev); 919 920 if (err) 921 goto exit_free_input_device; 922 } 923 924 usb_set_intfdata(interface, ati_remote); 925 return 0; 926 927 exit_free_input_device: 928 input_free_device(input_dev); 929 exit_unregister_device: 930 rc_unregister_device(rc_dev); 931 rc_dev = NULL; 932 exit_kill_urbs: 933 usb_kill_urb(ati_remote->irq_urb); 934 usb_kill_urb(ati_remote->out_urb); 935 exit_free_buffers: 936 ati_remote_free_buffers(ati_remote); 937 exit_free_dev_rdev: 938 rc_free_device(rc_dev); 939 kfree(ati_remote); 940 return err; 941 } 942 943 /* 944 * ati_remote_disconnect 945 */ 946 static void ati_remote_disconnect(struct usb_interface *interface) 947 { 948 struct ati_remote *ati_remote; 949 950 ati_remote = usb_get_intfdata(interface); 951 usb_set_intfdata(interface, NULL); 952 if (!ati_remote) { 953 dev_warn(&interface->dev, "%s - null device?\n", __func__); 954 return; 955 } 956 957 usb_kill_urb(ati_remote->irq_urb); 958 usb_kill_urb(ati_remote->out_urb); 959 if (ati_remote->idev) 960 input_unregister_device(ati_remote->idev); 961 rc_unregister_device(ati_remote->rdev); 962 ati_remote_free_buffers(ati_remote); 963 kfree(ati_remote); 964 } 965 966 /* usb specific object to register with the usb subsystem */ 967 static struct usb_driver ati_remote_driver = { 968 .name = "ati_remote", 969 .probe = ati_remote_probe, 970 .disconnect = ati_remote_disconnect, 971 .id_table = ati_remote_table, 972 }; 973 974 module_usb_driver(ati_remote_driver); 975 976 MODULE_AUTHOR(DRIVER_AUTHOR); 977 MODULE_DESCRIPTION(DRIVER_DESC); 978 MODULE_LICENSE("GPL"); 979