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 #undef err 139 #define err(format, arg...) printk(KERN_ERR format , ## arg) 140 141 struct ati_receiver_type { 142 /* either default_keymap or get_default_keymap should be set */ 143 const char *default_keymap; 144 const char *(*get_default_keymap)(struct usb_interface *interface); 145 }; 146 147 static const char *get_medion_keymap(struct usb_interface *interface) 148 { 149 struct usb_device *udev = interface_to_usbdev(interface); 150 151 /* 152 * There are many different Medion remotes shipped with a receiver 153 * with the same usb id, but the receivers have subtle differences 154 * in the USB descriptors allowing us to detect them. 155 */ 156 157 if (udev->manufacturer && udev->product) { 158 if (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP) { 159 160 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") 161 && !strcmp(udev->product, "USB Receiver")) 162 return RC_MAP_MEDION_X10_DIGITAINER; 163 164 if (!strcmp(udev->manufacturer, "X10 WTI") 165 && !strcmp(udev->product, "RF receiver")) 166 return RC_MAP_MEDION_X10_OR2X; 167 } else { 168 169 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") 170 && !strcmp(udev->product, "USB Receiver")) 171 return RC_MAP_MEDION_X10; 172 } 173 } 174 175 dev_info(&interface->dev, 176 "Unknown Medion X10 receiver, using default ati_remote Medion keymap\n"); 177 178 return RC_MAP_MEDION_X10; 179 } 180 181 static const struct ati_receiver_type type_ati = { 182 .default_keymap = RC_MAP_ATI_X10 183 }; 184 static const struct ati_receiver_type type_medion = { 185 .get_default_keymap = get_medion_keymap 186 }; 187 static const struct ati_receiver_type type_firefly = { 188 .default_keymap = RC_MAP_SNAPSTREAM_FIREFLY 189 }; 190 191 static const struct usb_device_id ati_remote_table[] = { 192 { 193 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID), 194 .driver_info = (unsigned long)&type_ati 195 }, 196 { 197 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID), 198 .driver_info = (unsigned long)&type_ati 199 }, 200 { 201 USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID), 202 .driver_info = (unsigned long)&type_ati 203 }, 204 { 205 USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID), 206 .driver_info = (unsigned long)&type_ati 207 }, 208 { 209 USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID), 210 .driver_info = (unsigned long)&type_medion 211 }, 212 { 213 USB_DEVICE(ATI_REMOTE_VENDOR_ID, FIREFLY_REMOTE_PRODUCT_ID), 214 .driver_info = (unsigned long)&type_firefly 215 }, 216 {} /* Terminating entry */ 217 }; 218 219 MODULE_DEVICE_TABLE(usb, ati_remote_table); 220 221 /* Get hi and low bytes of a 16-bits int */ 222 #define HI(a) ((unsigned char)((a) >> 8)) 223 #define LO(a) ((unsigned char)((a) & 0xff)) 224 225 #define SEND_FLAG_IN_PROGRESS 1 226 #define SEND_FLAG_COMPLETE 2 227 228 /* Device initialization strings */ 229 static char init1[] = { 0x01, 0x00, 0x20, 0x14 }; 230 static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 }; 231 232 struct ati_remote { 233 struct input_dev *idev; 234 struct rc_dev *rdev; 235 struct usb_device *udev; 236 struct usb_interface *interface; 237 238 struct urb *irq_urb; 239 struct urb *out_urb; 240 struct usb_endpoint_descriptor *endpoint_in; 241 struct usb_endpoint_descriptor *endpoint_out; 242 unsigned char *inbuf; 243 unsigned char *outbuf; 244 dma_addr_t inbuf_dma; 245 dma_addr_t outbuf_dma; 246 247 unsigned char old_data; /* Detect duplicate events */ 248 unsigned long old_jiffies; 249 unsigned long acc_jiffies; /* handle acceleration */ 250 unsigned long first_jiffies; 251 252 unsigned int repeat_count; 253 254 char rc_name[NAME_BUFSIZE]; 255 char rc_phys[NAME_BUFSIZE]; 256 char mouse_name[NAME_BUFSIZE]; 257 char mouse_phys[NAME_BUFSIZE]; 258 259 wait_queue_head_t wait; 260 int send_flags; 261 262 int users; /* 0-2, users are rc and input */ 263 struct mutex open_mutex; 264 }; 265 266 /* "Kinds" of messages sent from the hardware to the driver. */ 267 #define KIND_END 0 268 #define KIND_LITERAL 1 /* Simply pass to input system as EV_KEY */ 269 #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */ 270 #define KIND_ACCEL 3 /* Translate to EV_REL mouse-move events */ 271 272 /* Translation table from hardware messages to input events. */ 273 static const struct { 274 unsigned char kind; 275 unsigned char data; /* Raw key code from remote */ 276 unsigned short code; /* Input layer translation */ 277 } ati_remote_tbl[] = { 278 /* Directional control pad axes. Code is xxyy */ 279 {KIND_ACCEL, 0x70, 0xff00}, /* left */ 280 {KIND_ACCEL, 0x71, 0x0100}, /* right */ 281 {KIND_ACCEL, 0x72, 0x00ff}, /* up */ 282 {KIND_ACCEL, 0x73, 0x0001}, /* down */ 283 284 /* Directional control pad diagonals */ 285 {KIND_ACCEL, 0x74, 0xffff}, /* left up */ 286 {KIND_ACCEL, 0x75, 0x01ff}, /* right up */ 287 {KIND_ACCEL, 0x77, 0xff01}, /* left down */ 288 {KIND_ACCEL, 0x76, 0x0101}, /* right down */ 289 290 /* "Mouse button" buttons. The code below uses the fact that the 291 * lsbit of the raw code is a down/up indicator. */ 292 {KIND_LITERAL, 0x78, BTN_LEFT}, /* left btn down */ 293 {KIND_LITERAL, 0x79, BTN_LEFT}, /* left btn up */ 294 {KIND_LITERAL, 0x7c, BTN_RIGHT},/* right btn down */ 295 {KIND_LITERAL, 0x7d, BTN_RIGHT},/* right btn up */ 296 297 /* Artificial "double-click" events are generated by the hardware. 298 * They are mapped to the "side" and "extra" mouse buttons here. */ 299 {KIND_FILTERED, 0x7a, BTN_SIDE}, /* left dblclick */ 300 {KIND_FILTERED, 0x7e, BTN_EXTRA},/* right dblclick */ 301 302 /* Non-mouse events are handled by rc-core */ 303 {KIND_END, 0x00, 0} 304 }; 305 306 /* 307 * ati_remote_dump_input 308 */ 309 static void ati_remote_dump(struct device *dev, unsigned char *data, 310 unsigned int len) 311 { 312 if (len == 1) { 313 if (data[0] != (unsigned char)0xff && data[0] != 0x00) 314 dev_warn(dev, "Weird byte 0x%02x\n", data[0]); 315 } else if (len == 4) 316 dev_warn(dev, "Weird key %*ph\n", 4, data); 317 else 318 dev_warn(dev, "Weird data, len=%d %*ph ...\n", len, 6, data); 319 } 320 321 /* 322 * ati_remote_open 323 */ 324 static int ati_remote_open(struct ati_remote *ati_remote) 325 { 326 int err = 0; 327 328 mutex_lock(&ati_remote->open_mutex); 329 330 if (ati_remote->users++ != 0) 331 goto out; /* one was already active */ 332 333 /* On first open, submit the read urb which was set up previously. */ 334 ati_remote->irq_urb->dev = ati_remote->udev; 335 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) { 336 dev_err(&ati_remote->interface->dev, 337 "%s: usb_submit_urb failed!\n", __func__); 338 err = -EIO; 339 } 340 341 out: mutex_unlock(&ati_remote->open_mutex); 342 return err; 343 } 344 345 /* 346 * ati_remote_close 347 */ 348 static void ati_remote_close(struct ati_remote *ati_remote) 349 { 350 mutex_lock(&ati_remote->open_mutex); 351 if (--ati_remote->users == 0) 352 usb_kill_urb(ati_remote->irq_urb); 353 mutex_unlock(&ati_remote->open_mutex); 354 } 355 356 static int ati_remote_input_open(struct input_dev *inputdev) 357 { 358 struct ati_remote *ati_remote = input_get_drvdata(inputdev); 359 return ati_remote_open(ati_remote); 360 } 361 362 static void ati_remote_input_close(struct input_dev *inputdev) 363 { 364 struct ati_remote *ati_remote = input_get_drvdata(inputdev); 365 ati_remote_close(ati_remote); 366 } 367 368 static int ati_remote_rc_open(struct rc_dev *rdev) 369 { 370 struct ati_remote *ati_remote = rdev->priv; 371 return ati_remote_open(ati_remote); 372 } 373 374 static void ati_remote_rc_close(struct rc_dev *rdev) 375 { 376 struct ati_remote *ati_remote = rdev->priv; 377 ati_remote_close(ati_remote); 378 } 379 380 /* 381 * ati_remote_irq_out 382 */ 383 static void ati_remote_irq_out(struct urb *urb) 384 { 385 struct ati_remote *ati_remote = urb->context; 386 387 if (urb->status) { 388 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n", 389 __func__, urb->status); 390 return; 391 } 392 393 ati_remote->send_flags |= SEND_FLAG_COMPLETE; 394 wmb(); 395 wake_up(&ati_remote->wait); 396 } 397 398 /* 399 * ati_remote_sendpacket 400 * 401 * Used to send device initialization strings 402 */ 403 static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, 404 unsigned char *data) 405 { 406 int retval = 0; 407 408 /* Set up out_urb */ 409 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd)); 410 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd); 411 412 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1; 413 ati_remote->out_urb->dev = ati_remote->udev; 414 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS; 415 416 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC); 417 if (retval) { 418 dev_dbg(&ati_remote->interface->dev, 419 "sendpacket: usb_submit_urb failed: %d\n", retval); 420 return retval; 421 } 422 423 wait_event_timeout(ati_remote->wait, 424 ((ati_remote->out_urb->status != -EINPROGRESS) || 425 (ati_remote->send_flags & SEND_FLAG_COMPLETE)), 426 HZ); 427 usb_kill_urb(ati_remote->out_urb); 428 429 return retval; 430 } 431 432 struct accel_times { 433 const char value; 434 unsigned int msecs; 435 }; 436 437 static const struct accel_times accel[] = { 438 { 1, 125 }, 439 { 2, 250 }, 440 { 4, 500 }, 441 { 6, 1000 }, 442 { 9, 1500 }, 443 { 13, 2000 }, 444 { 20, 0 }, 445 }; 446 447 /* 448 * ati_remote_compute_accel 449 * 450 * Implements acceleration curve for directional control pad 451 * If elapsed time since last event is > 1/4 second, user "stopped", 452 * so reset acceleration. Otherwise, user is probably holding the control 453 * pad down, so we increase acceleration, ramping up over two seconds to 454 * a maximum speed. 455 */ 456 static int ati_remote_compute_accel(struct ati_remote *ati_remote) 457 { 458 unsigned long now = jiffies, reset_time; 459 int i; 460 461 reset_time = msecs_to_jiffies(250); 462 463 if (time_after(now, ati_remote->old_jiffies + reset_time)) { 464 ati_remote->acc_jiffies = now; 465 return 1; 466 } 467 for (i = 0; i < ARRAY_SIZE(accel) - 1; i++) { 468 unsigned long timeout = msecs_to_jiffies(accel[i].msecs); 469 470 if (time_before(now, ati_remote->acc_jiffies + timeout)) 471 return accel[i].value; 472 } 473 return accel[i].value; 474 } 475 476 /* 477 * ati_remote_report_input 478 */ 479 static void ati_remote_input_report(struct urb *urb) 480 { 481 struct ati_remote *ati_remote = urb->context; 482 unsigned char *data= ati_remote->inbuf; 483 struct input_dev *dev = ati_remote->idev; 484 int index = -1; 485 int remote_num; 486 unsigned char scancode; 487 u32 wheel_keycode = KEY_RESERVED; 488 int i; 489 490 /* 491 * data[0] = 0x14 492 * data[1] = data[2] + data[3] + 0xd5 (a checksum byte) 493 * data[2] = the key code (with toggle bit in MSB with some models) 494 * data[3] = channel << 4 (the low 4 bits must be zero) 495 */ 496 497 /* Deal with strange looking inputs */ 498 if ( urb->actual_length != 4 || data[0] != 0x14 || 499 data[1] != (unsigned char)(data[2] + data[3] + 0xD5) || 500 (data[3] & 0x0f) != 0x00) { 501 ati_remote_dump(&urb->dev->dev, data, urb->actual_length); 502 return; 503 } 504 505 if (data[1] != ((data[2] + data[3] + 0xd5) & 0xff)) { 506 dbginfo(&ati_remote->interface->dev, 507 "wrong checksum in input: %*ph\n", 4, data); 508 return; 509 } 510 511 /* Mask unwanted remote channels. */ 512 /* note: remote_num is 0-based, channel 1 on remote == 0 here */ 513 remote_num = (data[3] >> 4) & 0x0f; 514 if (channel_mask & (1 << (remote_num + 1))) { 515 dbginfo(&ati_remote->interface->dev, 516 "Masked input from channel 0x%02x: data %02x, mask= 0x%02lx\n", 517 remote_num, data[2], channel_mask); 518 return; 519 } 520 521 /* 522 * MSB is a toggle code, though only used by some devices 523 * (e.g. SnapStream Firefly) 524 */ 525 scancode = data[2] & 0x7f; 526 527 dbginfo(&ati_remote->interface->dev, 528 "channel 0x%02x; key data %02x, scancode %02x\n", 529 remote_num, data[2], scancode); 530 531 if (scancode >= 0x70) { 532 /* 533 * This is either a mouse or scrollwheel event, depending on 534 * the remote/keymap. 535 * Get the keycode assigned to scancode 0x78/0x70. If it is 536 * set, assume this is a scrollwheel up/down event. 537 */ 538 wheel_keycode = rc_g_keycode_from_table(ati_remote->rdev, 539 scancode & 0x78); 540 541 if (wheel_keycode == KEY_RESERVED) { 542 /* scrollwheel was not mapped, assume mouse */ 543 544 /* Look up event code index in the mouse translation 545 * table. 546 */ 547 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) { 548 if (scancode == ati_remote_tbl[i].data) { 549 index = i; 550 break; 551 } 552 } 553 } 554 } 555 556 if (index >= 0 && ati_remote_tbl[index].kind == KIND_LITERAL) { 557 /* 558 * The lsbit of the raw key code is a down/up flag. 559 * Invert it to match the input layer's conventions. 560 */ 561 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 562 !(data[2] & 1)); 563 564 ati_remote->old_jiffies = jiffies; 565 566 } else if (index < 0 || ati_remote_tbl[index].kind == KIND_FILTERED) { 567 unsigned long now = jiffies; 568 569 /* Filter duplicate events which happen "too close" together. */ 570 if (ati_remote->old_data == data[2] && 571 time_before(now, ati_remote->old_jiffies + 572 msecs_to_jiffies(repeat_filter))) { 573 ati_remote->repeat_count++; 574 } else { 575 ati_remote->repeat_count = 0; 576 ati_remote->first_jiffies = now; 577 } 578 579 ati_remote->old_jiffies = now; 580 581 /* Ensure we skip at least the 4 first duplicate events 582 * (generated by a single keypress), and continue skipping 583 * until repeat_delay msecs have passed. 584 */ 585 if (ati_remote->repeat_count > 0 && 586 (ati_remote->repeat_count < 5 || 587 time_before(now, ati_remote->first_jiffies + 588 msecs_to_jiffies(repeat_delay)))) 589 return; 590 591 if (index >= 0) { 592 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 1); 593 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 0); 594 } else { 595 /* Not a mouse event, hand it to rc-core. */ 596 int count = 1; 597 598 if (wheel_keycode != KEY_RESERVED) { 599 /* 600 * This is a scrollwheel event, send the 601 * scroll up (0x78) / down (0x70) scancode 602 * repeatedly as many times as indicated by 603 * rest of the scancode. 604 */ 605 count = (scancode & 0x07) + 1; 606 scancode &= 0x78; 607 } 608 609 while (count--) { 610 /* 611 * We don't use the rc-core repeat handling yet as 612 * it would cause ghost repeats which would be a 613 * regression for this driver. 614 */ 615 rc_keydown_notimeout(ati_remote->rdev, 616 RC_PROTO_OTHER, 617 scancode, data[2]); 618 rc_keyup(ati_remote->rdev); 619 } 620 goto nosync; 621 } 622 623 } else if (ati_remote_tbl[index].kind == KIND_ACCEL) { 624 signed char dx = ati_remote_tbl[index].code >> 8; 625 signed char dy = ati_remote_tbl[index].code & 255; 626 627 /* 628 * Other event kinds are from the directional control pad, and 629 * have an acceleration factor applied to them. Without this 630 * acceleration, the control pad is mostly unusable. 631 */ 632 int acc = ati_remote_compute_accel(ati_remote); 633 if (dx) 634 input_report_rel(dev, REL_X, dx * acc); 635 if (dy) 636 input_report_rel(dev, REL_Y, dy * acc); 637 ati_remote->old_jiffies = jiffies; 638 639 } else { 640 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n", 641 ati_remote_tbl[index].kind); 642 return; 643 } 644 input_sync(dev); 645 nosync: 646 ati_remote->old_data = data[2]; 647 } 648 649 /* 650 * ati_remote_irq_in 651 */ 652 static void ati_remote_irq_in(struct urb *urb) 653 { 654 struct ati_remote *ati_remote = urb->context; 655 int retval; 656 657 switch (urb->status) { 658 case 0: /* success */ 659 ati_remote_input_report(urb); 660 break; 661 case -ECONNRESET: /* unlink */ 662 case -ENOENT: 663 case -ESHUTDOWN: 664 dev_dbg(&ati_remote->interface->dev, 665 "%s: urb error status, unlink?\n", 666 __func__); 667 return; 668 default: /* error */ 669 dev_dbg(&ati_remote->interface->dev, 670 "%s: Nonzero urb status %d\n", 671 __func__, urb->status); 672 } 673 674 retval = usb_submit_urb(urb, GFP_ATOMIC); 675 if (retval) 676 dev_err(&ati_remote->interface->dev, 677 "%s: usb_submit_urb()=%d\n", 678 __func__, retval); 679 } 680 681 /* 682 * ati_remote_alloc_buffers 683 */ 684 static int ati_remote_alloc_buffers(struct usb_device *udev, 685 struct ati_remote *ati_remote) 686 { 687 ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, 688 &ati_remote->inbuf_dma); 689 if (!ati_remote->inbuf) 690 return -1; 691 692 ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, 693 &ati_remote->outbuf_dma); 694 if (!ati_remote->outbuf) 695 return -1; 696 697 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL); 698 if (!ati_remote->irq_urb) 699 return -1; 700 701 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL); 702 if (!ati_remote->out_urb) 703 return -1; 704 705 return 0; 706 } 707 708 /* 709 * ati_remote_free_buffers 710 */ 711 static void ati_remote_free_buffers(struct ati_remote *ati_remote) 712 { 713 usb_free_urb(ati_remote->irq_urb); 714 usb_free_urb(ati_remote->out_urb); 715 716 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, 717 ati_remote->inbuf, ati_remote->inbuf_dma); 718 719 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, 720 ati_remote->outbuf, ati_remote->outbuf_dma); 721 } 722 723 static void ati_remote_input_init(struct ati_remote *ati_remote) 724 { 725 struct input_dev *idev = ati_remote->idev; 726 int i; 727 728 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 729 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 730 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA); 731 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 732 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) 733 if (ati_remote_tbl[i].kind == KIND_LITERAL || 734 ati_remote_tbl[i].kind == KIND_FILTERED) 735 __set_bit(ati_remote_tbl[i].code, idev->keybit); 736 737 input_set_drvdata(idev, ati_remote); 738 739 idev->open = ati_remote_input_open; 740 idev->close = ati_remote_input_close; 741 742 idev->name = ati_remote->mouse_name; 743 idev->phys = ati_remote->mouse_phys; 744 745 usb_to_input_id(ati_remote->udev, &idev->id); 746 idev->dev.parent = &ati_remote->interface->dev; 747 } 748 749 static void ati_remote_rc_init(struct ati_remote *ati_remote) 750 { 751 struct rc_dev *rdev = ati_remote->rdev; 752 753 rdev->priv = ati_remote; 754 rdev->allowed_protocols = RC_PROTO_BIT_OTHER; 755 rdev->driver_name = "ati_remote"; 756 757 rdev->open = ati_remote_rc_open; 758 rdev->close = ati_remote_rc_close; 759 760 rdev->device_name = ati_remote->rc_name; 761 rdev->input_phys = ati_remote->rc_phys; 762 763 usb_to_input_id(ati_remote->udev, &rdev->input_id); 764 rdev->dev.parent = &ati_remote->interface->dev; 765 } 766 767 static int ati_remote_initialize(struct ati_remote *ati_remote) 768 { 769 struct usb_device *udev = ati_remote->udev; 770 int pipe, maxp; 771 772 init_waitqueue_head(&ati_remote->wait); 773 774 /* Set up irq_urb */ 775 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress); 776 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); 777 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; 778 779 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf, 780 maxp, ati_remote_irq_in, ati_remote, 781 ati_remote->endpoint_in->bInterval); 782 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma; 783 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 784 785 /* Set up out_urb */ 786 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress); 787 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); 788 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; 789 790 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf, 791 maxp, ati_remote_irq_out, ati_remote, 792 ati_remote->endpoint_out->bInterval); 793 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma; 794 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 795 796 /* send initialization strings */ 797 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) || 798 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) { 799 dev_err(&ati_remote->interface->dev, 800 "Initializing ati_remote hardware failed.\n"); 801 return -EIO; 802 } 803 804 return 0; 805 } 806 807 /* 808 * ati_remote_probe 809 */ 810 static int ati_remote_probe(struct usb_interface *interface, 811 const struct usb_device_id *id) 812 { 813 struct usb_device *udev = interface_to_usbdev(interface); 814 struct usb_host_interface *iface_host = interface->cur_altsetting; 815 struct usb_endpoint_descriptor *endpoint_in, *endpoint_out; 816 struct ati_receiver_type *type = (struct ati_receiver_type *)id->driver_info; 817 struct ati_remote *ati_remote; 818 struct input_dev *input_dev; 819 struct rc_dev *rc_dev; 820 int err = -ENOMEM; 821 822 if (iface_host->desc.bNumEndpoints != 2) { 823 err("%s: Unexpected desc.bNumEndpoints\n", __func__); 824 return -ENODEV; 825 } 826 827 endpoint_in = &iface_host->endpoint[0].desc; 828 endpoint_out = &iface_host->endpoint[1].desc; 829 830 if (!usb_endpoint_is_int_in(endpoint_in)) { 831 err("%s: Unexpected endpoint_in\n", __func__); 832 return -ENODEV; 833 } 834 if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) { 835 err("%s: endpoint_in message size==0? \n", __func__); 836 return -ENODEV; 837 } 838 if (!usb_endpoint_is_int_out(endpoint_out)) { 839 err("%s: Unexpected endpoint_out\n", __func__); 840 return -ENODEV; 841 } 842 843 ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL); 844 rc_dev = rc_allocate_device(RC_DRIVER_SCANCODE); 845 if (!ati_remote || !rc_dev) 846 goto exit_free_dev_rdev; 847 848 /* Allocate URB buffers, URBs */ 849 if (ati_remote_alloc_buffers(udev, ati_remote)) 850 goto exit_free_buffers; 851 852 ati_remote->endpoint_in = endpoint_in; 853 ati_remote->endpoint_out = endpoint_out; 854 ati_remote->udev = udev; 855 ati_remote->rdev = rc_dev; 856 ati_remote->interface = interface; 857 858 usb_make_path(udev, ati_remote->rc_phys, sizeof(ati_remote->rc_phys)); 859 strscpy(ati_remote->mouse_phys, ati_remote->rc_phys, 860 sizeof(ati_remote->mouse_phys)); 861 862 strlcat(ati_remote->rc_phys, "/input0", sizeof(ati_remote->rc_phys)); 863 strlcat(ati_remote->mouse_phys, "/input1", sizeof(ati_remote->mouse_phys)); 864 865 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), "%s%s%s", 866 udev->manufacturer ?: "", 867 udev->manufacturer && udev->product ? " " : "", 868 udev->product ?: ""); 869 870 if (!strlen(ati_remote->rc_name)) 871 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), 872 DRIVER_DESC "(%04x,%04x)", 873 le16_to_cpu(ati_remote->udev->descriptor.idVendor), 874 le16_to_cpu(ati_remote->udev->descriptor.idProduct)); 875 876 snprintf(ati_remote->mouse_name, sizeof(ati_remote->mouse_name), 877 "%s mouse", ati_remote->rc_name); 878 879 rc_dev->map_name = RC_MAP_ATI_X10; /* default map */ 880 881 /* set default keymap according to receiver model */ 882 if (type) { 883 if (type->default_keymap) 884 rc_dev->map_name = type->default_keymap; 885 else if (type->get_default_keymap) 886 rc_dev->map_name = type->get_default_keymap(interface); 887 } 888 889 ati_remote_rc_init(ati_remote); 890 mutex_init(&ati_remote->open_mutex); 891 892 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */ 893 err = ati_remote_initialize(ati_remote); 894 if (err) 895 goto exit_kill_urbs; 896 897 /* Set up and register rc device */ 898 err = rc_register_device(ati_remote->rdev); 899 if (err) 900 goto exit_kill_urbs; 901 902 /* Set up and register mouse input device */ 903 if (mouse) { 904 input_dev = input_allocate_device(); 905 if (!input_dev) { 906 err = -ENOMEM; 907 goto exit_unregister_device; 908 } 909 910 ati_remote->idev = input_dev; 911 ati_remote_input_init(ati_remote); 912 err = input_register_device(input_dev); 913 914 if (err) 915 goto exit_free_input_device; 916 } 917 918 usb_set_intfdata(interface, ati_remote); 919 return 0; 920 921 exit_free_input_device: 922 input_free_device(input_dev); 923 exit_unregister_device: 924 rc_unregister_device(rc_dev); 925 rc_dev = NULL; 926 exit_kill_urbs: 927 usb_kill_urb(ati_remote->irq_urb); 928 usb_kill_urb(ati_remote->out_urb); 929 exit_free_buffers: 930 ati_remote_free_buffers(ati_remote); 931 exit_free_dev_rdev: 932 rc_free_device(rc_dev); 933 kfree(ati_remote); 934 return err; 935 } 936 937 /* 938 * ati_remote_disconnect 939 */ 940 static void ati_remote_disconnect(struct usb_interface *interface) 941 { 942 struct ati_remote *ati_remote; 943 944 ati_remote = usb_get_intfdata(interface); 945 usb_set_intfdata(interface, NULL); 946 if (!ati_remote) { 947 dev_warn(&interface->dev, "%s - null device?\n", __func__); 948 return; 949 } 950 951 usb_kill_urb(ati_remote->irq_urb); 952 usb_kill_urb(ati_remote->out_urb); 953 if (ati_remote->idev) 954 input_unregister_device(ati_remote->idev); 955 rc_unregister_device(ati_remote->rdev); 956 ati_remote_free_buffers(ati_remote); 957 kfree(ati_remote); 958 } 959 960 /* usb specific object to register with the usb subsystem */ 961 static struct usb_driver ati_remote_driver = { 962 .name = "ati_remote", 963 .probe = ati_remote_probe, 964 .disconnect = ati_remote_disconnect, 965 .id_table = ati_remote_table, 966 }; 967 968 module_usb_driver(ati_remote_driver); 969 970 MODULE_AUTHOR(DRIVER_AUTHOR); 971 MODULE_DESCRIPTION(DRIVER_DESC); 972 MODULE_LICENSE("GPL"); 973