1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * USB ATI Remote support 4 * 5 * Copyright (c) 2011, 2012 Anssi Hannula <anssi.hannula@iki.fi> 6 * Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net> 7 * Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev 8 * 9 * This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including 10 * porting to the 2.6 kernel interfaces, along with other modification 11 * to better match the style of the existing usb/input drivers. However, the 12 * protocol and hardware handling is essentially unchanged from 2.1.1. 13 * 14 * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by 15 * Vojtech Pavlik. 16 * 17 * Changes: 18 * 19 * Feb 2004: Torrey Hoffman <thoffman@arnor.net> 20 * Version 2.2.0 21 * Jun 2004: Torrey Hoffman <thoffman@arnor.net> 22 * Version 2.2.1 23 * Added key repeat support contributed by: 24 * Vincent Vanackere <vanackere@lif.univ-mrs.fr> 25 * Added support for the "Lola" remote contributed by: 26 * Seth Cohn <sethcohn@yahoo.com> 27 * 28 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 29 * 30 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 31 * 32 * Hardware & software notes 33 * 34 * These remote controls are distributed by ATI as part of their 35 * "All-In-Wonder" video card packages. The receiver self-identifies as a 36 * "USB Receiver" with manufacturer "X10 Wireless Technology Inc". 37 * 38 * The "Lola" remote is available from X10. See: 39 * http://www.x10.com/products/lola_sg1.htm 40 * The Lola is similar to the ATI remote but has no mouse support, and slightly 41 * different keys. 42 * 43 * It is possible to use multiple receivers and remotes on multiple computers 44 * simultaneously by configuring them to use specific channels. 45 * 46 * The RF protocol used by the remote supports 16 distinct channels, 1 to 16. 47 * Actually, it may even support more, at least in some revisions of the 48 * hardware. 49 * 50 * Each remote can be configured to transmit on one channel as follows: 51 * - Press and hold the "hand icon" button. 52 * - When the red LED starts to blink, let go of the "hand icon" button. 53 * - When it stops blinking, input the channel code as two digits, from 01 54 * to 16, and press the hand icon again. 55 * 56 * The timing can be a little tricky. Try loading the module with debug=1 57 * to have the kernel print out messages about the remote control number 58 * and mask. Note: debugging prints remote numbers as zero-based hexadecimal. 59 * 60 * The driver has a "channel_mask" parameter. This bitmask specifies which 61 * channels will be ignored by the module. To mask out channels, just add 62 * all the 2^channel_number values together. 63 * 64 * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote 65 * ignore signals coming from remote controls transmitting on channel 4, but 66 * accept all other channels. 67 * 68 * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be 69 * ignored. 70 * 71 * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this 72 * parameter are unused. 73 */ 74 75 #include <linux/kernel.h> 76 #include <linux/errno.h> 77 #include <linux/init.h> 78 #include <linux/slab.h> 79 #include <linux/module.h> 80 #include <linux/mutex.h> 81 #include <linux/usb/input.h> 82 #include <linux/wait.h> 83 #include <linux/jiffies.h> 84 #include <media/rc-core.h> 85 86 /* 87 * Module and Version Information, Module Parameters 88 */ 89 90 #define ATI_REMOTE_VENDOR_ID 0x0bc7 91 #define LOLA_REMOTE_PRODUCT_ID 0x0002 92 #define LOLA2_REMOTE_PRODUCT_ID 0x0003 93 #define ATI_REMOTE_PRODUCT_ID 0x0004 94 #define NVIDIA_REMOTE_PRODUCT_ID 0x0005 95 #define MEDION_REMOTE_PRODUCT_ID 0x0006 96 #define FIREFLY_REMOTE_PRODUCT_ID 0x0008 97 98 #define DRIVER_VERSION "2.2.1" 99 #define DRIVER_AUTHOR "Torrey Hoffman <thoffman@arnor.net>" 100 #define DRIVER_DESC "ATI/X10 RF USB Remote Control" 101 102 #define NAME_BUFSIZE 80 /* size of product name, path buffers */ 103 #define DATA_BUFSIZE 63 /* size of URB data buffers */ 104 105 /* 106 * Duplicate event filtering time. 107 * Sequential, identical KIND_FILTERED inputs with less than 108 * FILTER_TIME milliseconds between them are considered as repeat 109 * events. The hardware generates 5 events for the first keypress 110 * and we have to take this into account for an accurate repeat 111 * behaviour. 112 */ 113 #define FILTER_TIME 60 /* msec */ 114 #define REPEAT_DELAY 500 /* msec */ 115 116 static unsigned long channel_mask; 117 module_param(channel_mask, ulong, 0644); 118 MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore"); 119 120 static int debug; 121 module_param(debug, int, 0644); 122 MODULE_PARM_DESC(debug, "Enable extra debug messages and information"); 123 124 static int repeat_filter = FILTER_TIME; 125 module_param(repeat_filter, int, 0644); 126 MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec"); 127 128 static int repeat_delay = REPEAT_DELAY; 129 module_param(repeat_delay, int, 0644); 130 MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec"); 131 132 static bool mouse = true; 133 module_param(mouse, bool, 0444); 134 MODULE_PARM_DESC(mouse, "Enable mouse device, default = yes"); 135 136 #define dbginfo(dev, format, arg...) \ 137 do { if (debug) dev_info(dev , format , ## arg); } while (0) 138 139 struct ati_receiver_type { 140 /* either default_keymap or get_default_keymap should be set */ 141 const char *default_keymap; 142 const char *(*get_default_keymap)(struct usb_interface *interface); 143 }; 144 145 static const char *get_medion_keymap(struct usb_interface *interface) 146 { 147 struct usb_device *udev = interface_to_usbdev(interface); 148 149 /* 150 * There are many different Medion remotes shipped with a receiver 151 * with the same usb id, but the receivers have subtle differences 152 * in the USB descriptors allowing us to detect them. 153 */ 154 155 if (udev->manufacturer && udev->product) { 156 if (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP) { 157 158 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") 159 && !strcmp(udev->product, "USB Receiver")) 160 return RC_MAP_MEDION_X10_DIGITAINER; 161 162 if (!strcmp(udev->manufacturer, "X10 WTI") 163 && !strcmp(udev->product, "RF receiver")) 164 return RC_MAP_MEDION_X10_OR2X; 165 } else { 166 167 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") 168 && !strcmp(udev->product, "USB Receiver")) 169 return RC_MAP_MEDION_X10; 170 } 171 } 172 173 dev_info(&interface->dev, 174 "Unknown Medion X10 receiver, using default ati_remote Medion keymap\n"); 175 176 return RC_MAP_MEDION_X10; 177 } 178 179 static const struct ati_receiver_type type_ati = { 180 .default_keymap = RC_MAP_ATI_X10 181 }; 182 static const struct ati_receiver_type type_medion = { 183 .get_default_keymap = get_medion_keymap 184 }; 185 static const struct ati_receiver_type type_firefly = { 186 .default_keymap = RC_MAP_SNAPSTREAM_FIREFLY 187 }; 188 189 static const struct usb_device_id ati_remote_table[] = { 190 { 191 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID), 192 .driver_info = (unsigned long)&type_ati 193 }, 194 { 195 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID), 196 .driver_info = (unsigned long)&type_ati 197 }, 198 { 199 USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID), 200 .driver_info = (unsigned long)&type_ati 201 }, 202 { 203 USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID), 204 .driver_info = (unsigned long)&type_ati 205 }, 206 { 207 USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID), 208 .driver_info = (unsigned long)&type_medion 209 }, 210 { 211 USB_DEVICE(ATI_REMOTE_VENDOR_ID, FIREFLY_REMOTE_PRODUCT_ID), 212 .driver_info = (unsigned long)&type_firefly 213 }, 214 {} /* Terminating entry */ 215 }; 216 217 MODULE_DEVICE_TABLE(usb, ati_remote_table); 218 219 /* Get hi and low bytes of a 16-bits int */ 220 #define HI(a) ((unsigned char)((a) >> 8)) 221 #define LO(a) ((unsigned char)((a) & 0xff)) 222 223 #define SEND_FLAG_IN_PROGRESS 1 224 #define SEND_FLAG_COMPLETE 2 225 226 /* Device initialization strings */ 227 static char init1[] = { 0x01, 0x00, 0x20, 0x14 }; 228 static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 }; 229 230 struct ati_remote { 231 struct input_dev *idev; 232 struct rc_dev *rdev; 233 struct usb_device *udev; 234 struct usb_interface *interface; 235 236 struct urb *irq_urb; 237 struct urb *out_urb; 238 struct usb_endpoint_descriptor *endpoint_in; 239 struct usb_endpoint_descriptor *endpoint_out; 240 unsigned char *inbuf; 241 unsigned char *outbuf; 242 dma_addr_t inbuf_dma; 243 dma_addr_t outbuf_dma; 244 245 unsigned char old_data; /* Detect duplicate events */ 246 unsigned long old_jiffies; 247 unsigned long acc_jiffies; /* handle acceleration */ 248 unsigned long first_jiffies; 249 250 unsigned int repeat_count; 251 252 char rc_name[NAME_BUFSIZE]; 253 char rc_phys[NAME_BUFSIZE]; 254 char mouse_name[NAME_BUFSIZE]; 255 char mouse_phys[NAME_BUFSIZE]; 256 257 wait_queue_head_t wait; 258 int send_flags; 259 260 int users; /* 0-2, users are rc and input */ 261 struct mutex open_mutex; 262 }; 263 264 /* "Kinds" of messages sent from the hardware to the driver. */ 265 #define KIND_END 0 266 #define KIND_LITERAL 1 /* Simply pass to input system as EV_KEY */ 267 #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */ 268 #define KIND_ACCEL 3 /* Translate to EV_REL mouse-move events */ 269 270 /* Translation table from hardware messages to input events. */ 271 static const struct { 272 unsigned char kind; 273 unsigned char data; /* Raw key code from remote */ 274 unsigned short code; /* Input layer translation */ 275 } ati_remote_tbl[] = { 276 /* Directional control pad axes. Code is xxyy */ 277 {KIND_ACCEL, 0x70, 0xff00}, /* left */ 278 {KIND_ACCEL, 0x71, 0x0100}, /* right */ 279 {KIND_ACCEL, 0x72, 0x00ff}, /* up */ 280 {KIND_ACCEL, 0x73, 0x0001}, /* down */ 281 282 /* Directional control pad diagonals */ 283 {KIND_ACCEL, 0x74, 0xffff}, /* left up */ 284 {KIND_ACCEL, 0x75, 0x01ff}, /* right up */ 285 {KIND_ACCEL, 0x77, 0xff01}, /* left down */ 286 {KIND_ACCEL, 0x76, 0x0101}, /* right down */ 287 288 /* "Mouse button" buttons. The code below uses the fact that the 289 * lsbit of the raw code is a down/up indicator. */ 290 {KIND_LITERAL, 0x78, BTN_LEFT}, /* left btn down */ 291 {KIND_LITERAL, 0x79, BTN_LEFT}, /* left btn up */ 292 {KIND_LITERAL, 0x7c, BTN_RIGHT},/* right btn down */ 293 {KIND_LITERAL, 0x7d, BTN_RIGHT},/* right btn up */ 294 295 /* Artificial "double-click" events are generated by the hardware. 296 * They are mapped to the "side" and "extra" mouse buttons here. */ 297 {KIND_FILTERED, 0x7a, BTN_SIDE}, /* left dblclick */ 298 {KIND_FILTERED, 0x7e, BTN_EXTRA},/* right dblclick */ 299 300 /* Non-mouse events are handled by rc-core */ 301 {KIND_END, 0x00, 0} 302 }; 303 304 /* 305 * ati_remote_dump_input 306 */ 307 static void ati_remote_dump(struct device *dev, unsigned char *data, 308 unsigned int len) 309 { 310 if (len == 1) { 311 if (data[0] != (unsigned char)0xff && data[0] != 0x00) 312 dev_warn(dev, "Weird byte 0x%02x\n", data[0]); 313 } else if (len == 4) 314 dev_warn(dev, "Weird key %*ph\n", 4, data); 315 else 316 dev_warn(dev, "Weird data, len=%d %*ph ...\n", len, 6, data); 317 } 318 319 /* 320 * ati_remote_open 321 */ 322 static int ati_remote_open(struct ati_remote *ati_remote) 323 { 324 int err = 0; 325 326 mutex_lock(&ati_remote->open_mutex); 327 328 if (ati_remote->users++ != 0) 329 goto out; /* one was already active */ 330 331 /* On first open, submit the read urb which was set up previously. */ 332 ati_remote->irq_urb->dev = ati_remote->udev; 333 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) { 334 dev_err(&ati_remote->interface->dev, 335 "%s: usb_submit_urb failed!\n", __func__); 336 err = -EIO; 337 } 338 339 out: mutex_unlock(&ati_remote->open_mutex); 340 return err; 341 } 342 343 /* 344 * ati_remote_close 345 */ 346 static void ati_remote_close(struct ati_remote *ati_remote) 347 { 348 mutex_lock(&ati_remote->open_mutex); 349 if (--ati_remote->users == 0) 350 usb_kill_urb(ati_remote->irq_urb); 351 mutex_unlock(&ati_remote->open_mutex); 352 } 353 354 static int ati_remote_input_open(struct input_dev *inputdev) 355 { 356 struct ati_remote *ati_remote = input_get_drvdata(inputdev); 357 return ati_remote_open(ati_remote); 358 } 359 360 static void ati_remote_input_close(struct input_dev *inputdev) 361 { 362 struct ati_remote *ati_remote = input_get_drvdata(inputdev); 363 ati_remote_close(ati_remote); 364 } 365 366 static int ati_remote_rc_open(struct rc_dev *rdev) 367 { 368 struct ati_remote *ati_remote = rdev->priv; 369 return ati_remote_open(ati_remote); 370 } 371 372 static void ati_remote_rc_close(struct rc_dev *rdev) 373 { 374 struct ati_remote *ati_remote = rdev->priv; 375 ati_remote_close(ati_remote); 376 } 377 378 /* 379 * ati_remote_irq_out 380 */ 381 static void ati_remote_irq_out(struct urb *urb) 382 { 383 struct ati_remote *ati_remote = urb->context; 384 385 if (urb->status) { 386 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n", 387 __func__, urb->status); 388 return; 389 } 390 391 ati_remote->send_flags |= SEND_FLAG_COMPLETE; 392 wmb(); 393 wake_up(&ati_remote->wait); 394 } 395 396 /* 397 * ati_remote_sendpacket 398 * 399 * Used to send device initialization strings 400 */ 401 static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, 402 unsigned char *data) 403 { 404 int retval = 0; 405 406 /* Set up out_urb */ 407 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd)); 408 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd); 409 410 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1; 411 ati_remote->out_urb->dev = ati_remote->udev; 412 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS; 413 414 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC); 415 if (retval) { 416 dev_dbg(&ati_remote->interface->dev, 417 "sendpacket: usb_submit_urb failed: %d\n", retval); 418 return retval; 419 } 420 421 wait_event_timeout(ati_remote->wait, 422 ((ati_remote->out_urb->status != -EINPROGRESS) || 423 (ati_remote->send_flags & SEND_FLAG_COMPLETE)), 424 HZ); 425 usb_kill_urb(ati_remote->out_urb); 426 427 return retval; 428 } 429 430 struct accel_times { 431 const char value; 432 unsigned int msecs; 433 }; 434 435 static const struct accel_times accel[] = { 436 { 1, 125 }, 437 { 2, 250 }, 438 { 4, 500 }, 439 { 6, 1000 }, 440 { 9, 1500 }, 441 { 13, 2000 }, 442 { 20, 0 }, 443 }; 444 445 /* 446 * ati_remote_compute_accel 447 * 448 * Implements acceleration curve for directional control pad 449 * If elapsed time since last event is > 1/4 second, user "stopped", 450 * so reset acceleration. Otherwise, user is probably holding the control 451 * pad down, so we increase acceleration, ramping up over two seconds to 452 * a maximum speed. 453 */ 454 static int ati_remote_compute_accel(struct ati_remote *ati_remote) 455 { 456 unsigned long now = jiffies, reset_time; 457 int i; 458 459 reset_time = msecs_to_jiffies(250); 460 461 if (time_after(now, ati_remote->old_jiffies + reset_time)) { 462 ati_remote->acc_jiffies = now; 463 return 1; 464 } 465 for (i = 0; i < ARRAY_SIZE(accel) - 1; i++) { 466 unsigned long timeout = msecs_to_jiffies(accel[i].msecs); 467 468 if (time_before(now, ati_remote->acc_jiffies + timeout)) 469 return accel[i].value; 470 } 471 return accel[i].value; 472 } 473 474 /* 475 * ati_remote_report_input 476 */ 477 static void ati_remote_input_report(struct urb *urb) 478 { 479 struct ati_remote *ati_remote = urb->context; 480 unsigned char *data= ati_remote->inbuf; 481 struct input_dev *dev = ati_remote->idev; 482 int index = -1; 483 int remote_num; 484 unsigned char scancode; 485 u32 wheel_keycode = KEY_RESERVED; 486 int i; 487 488 /* 489 * data[0] = 0x14 490 * data[1] = data[2] + data[3] + 0xd5 (a checksum byte) 491 * data[2] = the key code (with toggle bit in MSB with some models) 492 * data[3] = channel << 4 (the low 4 bits must be zero) 493 */ 494 495 /* Deal with strange looking inputs */ 496 if ( urb->actual_length != 4 || data[0] != 0x14 || 497 data[1] != (unsigned char)(data[2] + data[3] + 0xD5) || 498 (data[3] & 0x0f) != 0x00) { 499 ati_remote_dump(&urb->dev->dev, data, urb->actual_length); 500 return; 501 } 502 503 if (data[1] != ((data[2] + data[3] + 0xd5) & 0xff)) { 504 dbginfo(&ati_remote->interface->dev, 505 "wrong checksum in input: %*ph\n", 4, data); 506 return; 507 } 508 509 /* Mask unwanted remote channels. */ 510 /* note: remote_num is 0-based, channel 1 on remote == 0 here */ 511 remote_num = (data[3] >> 4) & 0x0f; 512 if (channel_mask & (1 << (remote_num + 1))) { 513 dbginfo(&ati_remote->interface->dev, 514 "Masked input from channel 0x%02x: data %02x, mask= 0x%02lx\n", 515 remote_num, data[2], channel_mask); 516 return; 517 } 518 519 /* 520 * MSB is a toggle code, though only used by some devices 521 * (e.g. SnapStream Firefly) 522 */ 523 scancode = data[2] & 0x7f; 524 525 dbginfo(&ati_remote->interface->dev, 526 "channel 0x%02x; key data %02x, scancode %02x\n", 527 remote_num, data[2], scancode); 528 529 if (scancode >= 0x70) { 530 /* 531 * This is either a mouse or scrollwheel event, depending on 532 * the remote/keymap. 533 * Get the keycode assigned to scancode 0x78/0x70. If it is 534 * set, assume this is a scrollwheel up/down event. 535 */ 536 wheel_keycode = rc_g_keycode_from_table(ati_remote->rdev, 537 scancode & 0x78); 538 539 if (wheel_keycode == KEY_RESERVED) { 540 /* scrollwheel was not mapped, assume mouse */ 541 542 /* Look up event code index in the mouse translation 543 * table. 544 */ 545 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) { 546 if (scancode == ati_remote_tbl[i].data) { 547 index = i; 548 break; 549 } 550 } 551 } 552 } 553 554 if (index >= 0 && ati_remote_tbl[index].kind == KIND_LITERAL) { 555 /* 556 * The lsbit of the raw key code is a down/up flag. 557 * Invert it to match the input layer's conventions. 558 */ 559 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 560 !(data[2] & 1)); 561 562 ati_remote->old_jiffies = jiffies; 563 564 } else if (index < 0 || ati_remote_tbl[index].kind == KIND_FILTERED) { 565 unsigned long now = jiffies; 566 567 /* Filter duplicate events which happen "too close" together. */ 568 if (ati_remote->old_data == data[2] && 569 time_before(now, ati_remote->old_jiffies + 570 msecs_to_jiffies(repeat_filter))) { 571 ati_remote->repeat_count++; 572 } else { 573 ati_remote->repeat_count = 0; 574 ati_remote->first_jiffies = now; 575 } 576 577 ati_remote->old_jiffies = now; 578 579 /* Ensure we skip at least the 4 first duplicate events 580 * (generated by a single keypress), and continue skipping 581 * until repeat_delay msecs have passed. 582 */ 583 if (ati_remote->repeat_count > 0 && 584 (ati_remote->repeat_count < 5 || 585 time_before(now, ati_remote->first_jiffies + 586 msecs_to_jiffies(repeat_delay)))) 587 return; 588 589 if (index >= 0) { 590 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 1); 591 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 0); 592 } else { 593 /* Not a mouse event, hand it to rc-core. */ 594 int count = 1; 595 596 if (wheel_keycode != KEY_RESERVED) { 597 /* 598 * This is a scrollwheel event, send the 599 * scroll up (0x78) / down (0x70) scancode 600 * repeatedly as many times as indicated by 601 * rest of the scancode. 602 */ 603 count = (scancode & 0x07) + 1; 604 scancode &= 0x78; 605 } 606 607 while (count--) { 608 /* 609 * We don't use the rc-core repeat handling yet as 610 * it would cause ghost repeats which would be a 611 * regression for this driver. 612 */ 613 rc_keydown_notimeout(ati_remote->rdev, 614 RC_PROTO_OTHER, 615 scancode, data[2]); 616 rc_keyup(ati_remote->rdev); 617 } 618 goto nosync; 619 } 620 621 } else if (ati_remote_tbl[index].kind == KIND_ACCEL) { 622 signed char dx = ati_remote_tbl[index].code >> 8; 623 signed char dy = ati_remote_tbl[index].code & 255; 624 625 /* 626 * Other event kinds are from the directional control pad, and 627 * have an acceleration factor applied to them. Without this 628 * acceleration, the control pad is mostly unusable. 629 */ 630 int acc = ati_remote_compute_accel(ati_remote); 631 if (dx) 632 input_report_rel(dev, REL_X, dx * acc); 633 if (dy) 634 input_report_rel(dev, REL_Y, dy * acc); 635 ati_remote->old_jiffies = jiffies; 636 637 } else { 638 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n", 639 ati_remote_tbl[index].kind); 640 return; 641 } 642 input_sync(dev); 643 nosync: 644 ati_remote->old_data = data[2]; 645 } 646 647 /* 648 * ati_remote_irq_in 649 */ 650 static void ati_remote_irq_in(struct urb *urb) 651 { 652 struct ati_remote *ati_remote = urb->context; 653 int retval; 654 655 switch (urb->status) { 656 case 0: /* success */ 657 ati_remote_input_report(urb); 658 break; 659 case -ECONNRESET: /* unlink */ 660 case -ENOENT: 661 case -ESHUTDOWN: 662 dev_dbg(&ati_remote->interface->dev, 663 "%s: urb error status, unlink?\n", 664 __func__); 665 return; 666 default: /* error */ 667 dev_dbg(&ati_remote->interface->dev, 668 "%s: Nonzero urb status %d\n", 669 __func__, urb->status); 670 } 671 672 retval = usb_submit_urb(urb, GFP_ATOMIC); 673 if (retval) 674 dev_err(&ati_remote->interface->dev, 675 "%s: usb_submit_urb()=%d\n", 676 __func__, retval); 677 } 678 679 /* 680 * ati_remote_alloc_buffers 681 */ 682 static int ati_remote_alloc_buffers(struct usb_device *udev, 683 struct ati_remote *ati_remote) 684 { 685 ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, 686 &ati_remote->inbuf_dma); 687 if (!ati_remote->inbuf) 688 return -1; 689 690 ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, 691 &ati_remote->outbuf_dma); 692 if (!ati_remote->outbuf) 693 return -1; 694 695 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL); 696 if (!ati_remote->irq_urb) 697 return -1; 698 699 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL); 700 if (!ati_remote->out_urb) 701 return -1; 702 703 return 0; 704 } 705 706 /* 707 * ati_remote_free_buffers 708 */ 709 static void ati_remote_free_buffers(struct ati_remote *ati_remote) 710 { 711 usb_free_urb(ati_remote->irq_urb); 712 usb_free_urb(ati_remote->out_urb); 713 714 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, 715 ati_remote->inbuf, ati_remote->inbuf_dma); 716 717 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, 718 ati_remote->outbuf, ati_remote->outbuf_dma); 719 } 720 721 static void ati_remote_input_init(struct ati_remote *ati_remote) 722 { 723 struct input_dev *idev = ati_remote->idev; 724 int i; 725 726 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 727 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 728 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA); 729 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 730 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) 731 if (ati_remote_tbl[i].kind == KIND_LITERAL || 732 ati_remote_tbl[i].kind == KIND_FILTERED) 733 __set_bit(ati_remote_tbl[i].code, idev->keybit); 734 735 input_set_drvdata(idev, ati_remote); 736 737 idev->open = ati_remote_input_open; 738 idev->close = ati_remote_input_close; 739 740 idev->name = ati_remote->mouse_name; 741 idev->phys = ati_remote->mouse_phys; 742 743 usb_to_input_id(ati_remote->udev, &idev->id); 744 idev->dev.parent = &ati_remote->interface->dev; 745 } 746 747 static void ati_remote_rc_init(struct ati_remote *ati_remote) 748 { 749 struct rc_dev *rdev = ati_remote->rdev; 750 751 rdev->priv = ati_remote; 752 rdev->allowed_protocols = RC_PROTO_BIT_OTHER; 753 rdev->driver_name = "ati_remote"; 754 755 rdev->open = ati_remote_rc_open; 756 rdev->close = ati_remote_rc_close; 757 758 rdev->device_name = ati_remote->rc_name; 759 rdev->input_phys = ati_remote->rc_phys; 760 761 usb_to_input_id(ati_remote->udev, &rdev->input_id); 762 rdev->dev.parent = &ati_remote->interface->dev; 763 } 764 765 static int ati_remote_initialize(struct ati_remote *ati_remote) 766 { 767 struct usb_device *udev = ati_remote->udev; 768 int pipe, maxp; 769 770 init_waitqueue_head(&ati_remote->wait); 771 772 /* Set up irq_urb */ 773 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress); 774 maxp = usb_maxpacket(udev, pipe); 775 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; 776 777 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf, 778 maxp, ati_remote_irq_in, ati_remote, 779 ati_remote->endpoint_in->bInterval); 780 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma; 781 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 782 783 /* Set up out_urb */ 784 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress); 785 maxp = usb_maxpacket(udev, pipe); 786 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; 787 788 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf, 789 maxp, ati_remote_irq_out, ati_remote, 790 ati_remote->endpoint_out->bInterval); 791 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma; 792 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 793 794 /* send initialization strings */ 795 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) || 796 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) { 797 dev_err(&ati_remote->interface->dev, 798 "Initializing ati_remote hardware failed.\n"); 799 return -EIO; 800 } 801 802 return 0; 803 } 804 805 /* 806 * ati_remote_probe 807 */ 808 static int ati_remote_probe(struct usb_interface *interface, 809 const struct usb_device_id *id) 810 { 811 struct usb_device *udev = interface_to_usbdev(interface); 812 struct usb_host_interface *iface_host = interface->cur_altsetting; 813 struct usb_endpoint_descriptor *endpoint_in, *endpoint_out; 814 struct ati_receiver_type *type = (struct ati_receiver_type *)id->driver_info; 815 struct ati_remote *ati_remote; 816 struct input_dev *input_dev; 817 struct device *device = &interface->dev; 818 struct rc_dev *rc_dev; 819 int err = -ENOMEM; 820 821 if (iface_host->desc.bNumEndpoints != 2) { 822 dev_err(device, "%s: Unexpected desc.bNumEndpoints\n", __func__); 823 return -ENODEV; 824 } 825 826 endpoint_in = &iface_host->endpoint[0].desc; 827 endpoint_out = &iface_host->endpoint[1].desc; 828 829 if (!usb_endpoint_is_int_in(endpoint_in)) { 830 dev_err(device, "%s: Unexpected endpoint_in\n", __func__); 831 return -ENODEV; 832 } 833 if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) { 834 dev_err(device, "%s: endpoint_in message size==0?\n", __func__); 835 return -ENODEV; 836 } 837 if (!usb_endpoint_is_int_out(endpoint_out)) { 838 dev_err(device, "%s: Unexpected endpoint_out\n", __func__); 839 return -ENODEV; 840 } 841 842 ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL); 843 rc_dev = rc_allocate_device(RC_DRIVER_SCANCODE); 844 if (!ati_remote || !rc_dev) 845 goto exit_free_dev_rdev; 846 847 /* Allocate URB buffers, URBs */ 848 if (ati_remote_alloc_buffers(udev, ati_remote)) 849 goto exit_free_buffers; 850 851 ati_remote->endpoint_in = endpoint_in; 852 ati_remote->endpoint_out = endpoint_out; 853 ati_remote->udev = udev; 854 ati_remote->rdev = rc_dev; 855 ati_remote->interface = interface; 856 857 usb_make_path(udev, ati_remote->rc_phys, sizeof(ati_remote->rc_phys)); 858 strscpy(ati_remote->mouse_phys, ati_remote->rc_phys, 859 sizeof(ati_remote->mouse_phys)); 860 861 strlcat(ati_remote->rc_phys, "/input0", sizeof(ati_remote->rc_phys)); 862 strlcat(ati_remote->mouse_phys, "/input1", sizeof(ati_remote->mouse_phys)); 863 864 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), "%s%s%s", 865 udev->manufacturer ?: "", 866 udev->manufacturer && udev->product ? " " : "", 867 udev->product ?: ""); 868 869 if (!strlen(ati_remote->rc_name)) 870 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), 871 DRIVER_DESC "(%04x,%04x)", 872 le16_to_cpu(ati_remote->udev->descriptor.idVendor), 873 le16_to_cpu(ati_remote->udev->descriptor.idProduct)); 874 875 snprintf(ati_remote->mouse_name, sizeof(ati_remote->mouse_name), 876 "%s mouse", ati_remote->rc_name); 877 878 rc_dev->map_name = RC_MAP_ATI_X10; /* default map */ 879 880 /* set default keymap according to receiver model */ 881 if (type) { 882 if (type->default_keymap) 883 rc_dev->map_name = type->default_keymap; 884 else if (type->get_default_keymap) 885 rc_dev->map_name = type->get_default_keymap(interface); 886 } 887 888 ati_remote_rc_init(ati_remote); 889 mutex_init(&ati_remote->open_mutex); 890 891 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */ 892 err = ati_remote_initialize(ati_remote); 893 if (err) 894 goto exit_kill_urbs; 895 896 /* Set up and register rc device */ 897 err = rc_register_device(ati_remote->rdev); 898 if (err) 899 goto exit_kill_urbs; 900 901 /* Set up and register mouse input device */ 902 if (mouse) { 903 input_dev = input_allocate_device(); 904 if (!input_dev) { 905 err = -ENOMEM; 906 goto exit_unregister_device; 907 } 908 909 ati_remote->idev = input_dev; 910 ati_remote_input_init(ati_remote); 911 err = input_register_device(input_dev); 912 913 if (err) 914 goto exit_free_input_device; 915 } 916 917 usb_set_intfdata(interface, ati_remote); 918 return 0; 919 920 exit_free_input_device: 921 input_free_device(input_dev); 922 exit_unregister_device: 923 rc_unregister_device(rc_dev); 924 rc_dev = NULL; 925 exit_kill_urbs: 926 usb_kill_urb(ati_remote->irq_urb); 927 usb_kill_urb(ati_remote->out_urb); 928 exit_free_buffers: 929 ati_remote_free_buffers(ati_remote); 930 exit_free_dev_rdev: 931 rc_free_device(rc_dev); 932 kfree(ati_remote); 933 return err; 934 } 935 936 /* 937 * ati_remote_disconnect 938 */ 939 static void ati_remote_disconnect(struct usb_interface *interface) 940 { 941 struct ati_remote *ati_remote; 942 943 ati_remote = usb_get_intfdata(interface); 944 usb_set_intfdata(interface, NULL); 945 if (!ati_remote) { 946 dev_warn(&interface->dev, "%s - null device?\n", __func__); 947 return; 948 } 949 950 usb_kill_urb(ati_remote->irq_urb); 951 usb_kill_urb(ati_remote->out_urb); 952 if (ati_remote->idev) 953 input_unregister_device(ati_remote->idev); 954 rc_unregister_device(ati_remote->rdev); 955 ati_remote_free_buffers(ati_remote); 956 kfree(ati_remote); 957 } 958 959 /* usb specific object to register with the usb subsystem */ 960 static struct usb_driver ati_remote_driver = { 961 .name = "ati_remote", 962 .probe = ati_remote_probe, 963 .disconnect = ati_remote_disconnect, 964 .id_table = ati_remote_table, 965 }; 966 967 module_usb_driver(ati_remote_driver); 968 969 MODULE_AUTHOR(DRIVER_AUTHOR); 970 MODULE_DESCRIPTION(DRIVER_DESC); 971 MODULE_LICENSE("GPL"); 972