1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ati_remote2 - ATI/Philips USB RF remote driver 4 * 5 * Copyright (C) 2005-2008 Ville Syrjala <syrjala@sci.fi> 6 * Copyright (C) 2007-2008 Peter Stokes <linux@dadeos.co.uk> 7 */ 8 9 #include <linux/usb/input.h> 10 #include <linux/slab.h> 11 #include <linux/module.h> 12 13 #define DRIVER_DESC "ATI/Philips USB RF remote driver" 14 15 MODULE_DESCRIPTION(DRIVER_DESC); 16 MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>"); 17 MODULE_LICENSE("GPL"); 18 19 /* 20 * ATI Remote Wonder II Channel Configuration 21 * 22 * The remote control can be assigned one of sixteen "channels" in order to facilitate 23 * the use of multiple remote controls within range of each other. 24 * A remote's "channel" may be altered by pressing and holding the "PC" button for 25 * approximately 3 seconds, after which the button will slowly flash the count of the 26 * currently configured "channel", using the numeric keypad enter a number between 1 and 27 * 16 and then press the "PC" button again, the button will slowly flash the count of the 28 * newly configured "channel". 29 */ 30 31 enum { 32 ATI_REMOTE2_MAX_CHANNEL_MASK = 0xFFFF, 33 ATI_REMOTE2_MAX_MODE_MASK = 0x1F, 34 }; 35 36 static int ati_remote2_set_mask(const char *val, 37 const struct kernel_param *kp, 38 unsigned int max) 39 { 40 unsigned int mask; 41 int ret; 42 43 if (!val) 44 return -EINVAL; 45 46 ret = kstrtouint(val, 0, &mask); 47 if (ret) 48 return ret; 49 50 if (mask & ~max) 51 return -EINVAL; 52 53 *(unsigned int *)kp->arg = mask; 54 55 return 0; 56 } 57 58 static int ati_remote2_set_channel_mask(const char *val, 59 const struct kernel_param *kp) 60 { 61 pr_debug("%s()\n", __func__); 62 63 return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_CHANNEL_MASK); 64 } 65 66 static int ati_remote2_get_channel_mask(char *buffer, 67 const struct kernel_param *kp) 68 { 69 pr_debug("%s()\n", __func__); 70 71 return sprintf(buffer, "0x%04x\n", *(unsigned int *)kp->arg); 72 } 73 74 static int ati_remote2_set_mode_mask(const char *val, 75 const struct kernel_param *kp) 76 { 77 pr_debug("%s()\n", __func__); 78 79 return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_MODE_MASK); 80 } 81 82 static int ati_remote2_get_mode_mask(char *buffer, 83 const struct kernel_param *kp) 84 { 85 pr_debug("%s()\n", __func__); 86 87 return sprintf(buffer, "0x%02x\n", *(unsigned int *)kp->arg); 88 } 89 90 static unsigned int channel_mask = ATI_REMOTE2_MAX_CHANNEL_MASK; 91 #define param_check_channel_mask(name, p) __param_check(name, p, unsigned int) 92 static const struct kernel_param_ops param_ops_channel_mask = { 93 .set = ati_remote2_set_channel_mask, 94 .get = ati_remote2_get_channel_mask, 95 }; 96 module_param(channel_mask, channel_mask, 0644); 97 MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>"); 98 99 static unsigned int mode_mask = ATI_REMOTE2_MAX_MODE_MASK; 100 #define param_check_mode_mask(name, p) __param_check(name, p, unsigned int) 101 static const struct kernel_param_ops param_ops_mode_mask = { 102 .set = ati_remote2_set_mode_mask, 103 .get = ati_remote2_get_mode_mask, 104 }; 105 module_param(mode_mask, mode_mask, 0644); 106 MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>"); 107 108 static const struct usb_device_id ati_remote2_id_table[] = { 109 { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */ 110 { } 111 }; 112 MODULE_DEVICE_TABLE(usb, ati_remote2_id_table); 113 114 static DEFINE_MUTEX(ati_remote2_mutex); 115 116 enum { 117 ATI_REMOTE2_OPENED = 0x1, 118 ATI_REMOTE2_SUSPENDED = 0x2, 119 }; 120 121 enum { 122 ATI_REMOTE2_AUX1, 123 ATI_REMOTE2_AUX2, 124 ATI_REMOTE2_AUX3, 125 ATI_REMOTE2_AUX4, 126 ATI_REMOTE2_PC, 127 ATI_REMOTE2_MODES, 128 }; 129 130 static const struct { 131 u8 hw_code; 132 u16 keycode; 133 } ati_remote2_key_table[] = { 134 { 0x00, KEY_0 }, 135 { 0x01, KEY_1 }, 136 { 0x02, KEY_2 }, 137 { 0x03, KEY_3 }, 138 { 0x04, KEY_4 }, 139 { 0x05, KEY_5 }, 140 { 0x06, KEY_6 }, 141 { 0x07, KEY_7 }, 142 { 0x08, KEY_8 }, 143 { 0x09, KEY_9 }, 144 { 0x0c, KEY_POWER }, 145 { 0x0d, KEY_MUTE }, 146 { 0x10, KEY_VOLUMEUP }, 147 { 0x11, KEY_VOLUMEDOWN }, 148 { 0x20, KEY_CHANNELUP }, 149 { 0x21, KEY_CHANNELDOWN }, 150 { 0x28, KEY_FORWARD }, 151 { 0x29, KEY_REWIND }, 152 { 0x2c, KEY_PLAY }, 153 { 0x30, KEY_PAUSE }, 154 { 0x31, KEY_STOP }, 155 { 0x37, KEY_RECORD }, 156 { 0x38, KEY_DVD }, 157 { 0x39, KEY_TV }, 158 { 0x3f, KEY_PROG1 }, /* AUX1-AUX4 and PC */ 159 { 0x54, KEY_MENU }, 160 { 0x58, KEY_UP }, 161 { 0x59, KEY_DOWN }, 162 { 0x5a, KEY_LEFT }, 163 { 0x5b, KEY_RIGHT }, 164 { 0x5c, KEY_OK }, 165 { 0x78, KEY_A }, 166 { 0x79, KEY_B }, 167 { 0x7a, KEY_C }, 168 { 0x7b, KEY_D }, 169 { 0x7c, KEY_E }, 170 { 0x7d, KEY_F }, 171 { 0x82, KEY_ENTER }, 172 { 0x8e, KEY_VENDOR }, 173 { 0x96, KEY_COFFEE }, 174 { 0xa9, BTN_LEFT }, 175 { 0xaa, BTN_RIGHT }, 176 { 0xbe, KEY_QUESTION }, 177 { 0xd0, KEY_EDIT }, 178 { 0xd5, KEY_FRONT }, 179 { 0xf9, KEY_INFO }, 180 }; 181 182 struct ati_remote2 { 183 struct input_dev *idev; 184 struct usb_device *udev; 185 186 struct usb_interface *intf[2]; 187 struct usb_endpoint_descriptor *ep[2]; 188 struct urb *urb[2]; 189 void *buf[2]; 190 dma_addr_t buf_dma[2]; 191 192 unsigned long jiffies; 193 int mode; 194 195 char name[64]; 196 char phys[64]; 197 198 /* Each mode (AUX1-AUX4 and PC) can have an independent keymap. */ 199 u16 keycode[ATI_REMOTE2_MODES][ARRAY_SIZE(ati_remote2_key_table)]; 200 201 unsigned int flags; 202 203 unsigned int channel_mask; 204 unsigned int mode_mask; 205 }; 206 207 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id); 208 static void ati_remote2_disconnect(struct usb_interface *interface); 209 static int ati_remote2_suspend(struct usb_interface *interface, pm_message_t message); 210 static int ati_remote2_resume(struct usb_interface *interface); 211 static int ati_remote2_reset_resume(struct usb_interface *interface); 212 static int ati_remote2_pre_reset(struct usb_interface *interface); 213 static int ati_remote2_post_reset(struct usb_interface *interface); 214 215 static struct usb_driver ati_remote2_driver = { 216 .name = "ati_remote2", 217 .probe = ati_remote2_probe, 218 .disconnect = ati_remote2_disconnect, 219 .id_table = ati_remote2_id_table, 220 .suspend = ati_remote2_suspend, 221 .resume = ati_remote2_resume, 222 .reset_resume = ati_remote2_reset_resume, 223 .pre_reset = ati_remote2_pre_reset, 224 .post_reset = ati_remote2_post_reset, 225 .supports_autosuspend = 1, 226 }; 227 228 static int ati_remote2_submit_urbs(struct ati_remote2 *ar2) 229 { 230 int r; 231 232 r = usb_submit_urb(ar2->urb[0], GFP_KERNEL); 233 if (r) { 234 dev_err(&ar2->intf[0]->dev, 235 "%s(): usb_submit_urb() = %d\n", __func__, r); 236 return r; 237 } 238 r = usb_submit_urb(ar2->urb[1], GFP_KERNEL); 239 if (r) { 240 usb_kill_urb(ar2->urb[0]); 241 dev_err(&ar2->intf[1]->dev, 242 "%s(): usb_submit_urb() = %d\n", __func__, r); 243 return r; 244 } 245 246 return 0; 247 } 248 249 static void ati_remote2_kill_urbs(struct ati_remote2 *ar2) 250 { 251 usb_kill_urb(ar2->urb[1]); 252 usb_kill_urb(ar2->urb[0]); 253 } 254 255 static int ati_remote2_open(struct input_dev *idev) 256 { 257 struct ati_remote2 *ar2 = input_get_drvdata(idev); 258 int r; 259 260 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 261 262 r = usb_autopm_get_interface(ar2->intf[0]); 263 if (r) { 264 dev_err(&ar2->intf[0]->dev, 265 "%s(): usb_autopm_get_interface() = %d\n", __func__, r); 266 goto fail1; 267 } 268 269 mutex_lock(&ati_remote2_mutex); 270 271 if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) { 272 r = ati_remote2_submit_urbs(ar2); 273 if (r) 274 goto fail2; 275 } 276 277 ar2->flags |= ATI_REMOTE2_OPENED; 278 279 mutex_unlock(&ati_remote2_mutex); 280 281 usb_autopm_put_interface(ar2->intf[0]); 282 283 return 0; 284 285 fail2: 286 mutex_unlock(&ati_remote2_mutex); 287 usb_autopm_put_interface(ar2->intf[0]); 288 fail1: 289 return r; 290 } 291 292 static void ati_remote2_close(struct input_dev *idev) 293 { 294 struct ati_remote2 *ar2 = input_get_drvdata(idev); 295 296 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 297 298 mutex_lock(&ati_remote2_mutex); 299 300 if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) 301 ati_remote2_kill_urbs(ar2); 302 303 ar2->flags &= ~ATI_REMOTE2_OPENED; 304 305 mutex_unlock(&ati_remote2_mutex); 306 } 307 308 static void ati_remote2_input_mouse(struct ati_remote2 *ar2) 309 { 310 struct input_dev *idev = ar2->idev; 311 u8 *data = ar2->buf[0]; 312 int channel, mode; 313 314 channel = data[0] >> 4; 315 316 if (!((1 << channel) & ar2->channel_mask)) 317 return; 318 319 mode = data[0] & 0x0F; 320 321 if (mode > ATI_REMOTE2_PC) { 322 dev_err(&ar2->intf[0]->dev, 323 "Unknown mode byte (%02x %02x %02x %02x)\n", 324 data[3], data[2], data[1], data[0]); 325 return; 326 } 327 328 if (!((1 << mode) & ar2->mode_mask)) 329 return; 330 331 input_event(idev, EV_REL, REL_X, (s8) data[1]); 332 input_event(idev, EV_REL, REL_Y, (s8) data[2]); 333 input_sync(idev); 334 } 335 336 static int ati_remote2_lookup(unsigned int hw_code) 337 { 338 int i; 339 340 for (i = 0; i < ARRAY_SIZE(ati_remote2_key_table); i++) 341 if (ati_remote2_key_table[i].hw_code == hw_code) 342 return i; 343 344 return -1; 345 } 346 347 static void ati_remote2_input_key(struct ati_remote2 *ar2) 348 { 349 struct input_dev *idev = ar2->idev; 350 u8 *data = ar2->buf[1]; 351 int channel, mode, hw_code, index; 352 353 channel = data[0] >> 4; 354 355 if (!((1 << channel) & ar2->channel_mask)) 356 return; 357 358 mode = data[0] & 0x0F; 359 360 if (mode > ATI_REMOTE2_PC) { 361 dev_err(&ar2->intf[1]->dev, 362 "Unknown mode byte (%02x %02x %02x %02x)\n", 363 data[3], data[2], data[1], data[0]); 364 return; 365 } 366 367 hw_code = data[2]; 368 if (hw_code == 0x3f) { 369 /* 370 * For some incomprehensible reason the mouse pad generates 371 * events which look identical to the events from the last 372 * pressed mode key. Naturally we don't want to generate key 373 * events for the mouse pad so we filter out any subsequent 374 * events from the same mode key. 375 */ 376 if (ar2->mode == mode) 377 return; 378 379 if (data[1] == 0) 380 ar2->mode = mode; 381 } 382 383 if (!((1 << mode) & ar2->mode_mask)) 384 return; 385 386 index = ati_remote2_lookup(hw_code); 387 if (index < 0) { 388 dev_err(&ar2->intf[1]->dev, 389 "Unknown code byte (%02x %02x %02x %02x)\n", 390 data[3], data[2], data[1], data[0]); 391 return; 392 } 393 394 switch (data[1]) { 395 case 0: /* release */ 396 break; 397 case 1: /* press */ 398 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]); 399 break; 400 case 2: /* repeat */ 401 402 /* No repeat for mouse buttons. */ 403 if (ar2->keycode[mode][index] == BTN_LEFT || 404 ar2->keycode[mode][index] == BTN_RIGHT) 405 return; 406 407 if (!time_after_eq(jiffies, ar2->jiffies)) 408 return; 409 410 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]); 411 break; 412 default: 413 dev_err(&ar2->intf[1]->dev, 414 "Unknown state byte (%02x %02x %02x %02x)\n", 415 data[3], data[2], data[1], data[0]); 416 return; 417 } 418 419 input_event(idev, EV_KEY, ar2->keycode[mode][index], data[1]); 420 input_sync(idev); 421 } 422 423 static void ati_remote2_complete_mouse(struct urb *urb) 424 { 425 struct ati_remote2 *ar2 = urb->context; 426 int r; 427 428 switch (urb->status) { 429 case 0: 430 usb_mark_last_busy(ar2->udev); 431 ati_remote2_input_mouse(ar2); 432 break; 433 case -ENOENT: 434 case -EILSEQ: 435 case -ECONNRESET: 436 case -ESHUTDOWN: 437 dev_dbg(&ar2->intf[0]->dev, 438 "%s(): urb status = %d\n", __func__, urb->status); 439 return; 440 default: 441 usb_mark_last_busy(ar2->udev); 442 dev_err(&ar2->intf[0]->dev, 443 "%s(): urb status = %d\n", __func__, urb->status); 444 } 445 446 r = usb_submit_urb(urb, GFP_ATOMIC); 447 if (r) 448 dev_err(&ar2->intf[0]->dev, 449 "%s(): usb_submit_urb() = %d\n", __func__, r); 450 } 451 452 static void ati_remote2_complete_key(struct urb *urb) 453 { 454 struct ati_remote2 *ar2 = urb->context; 455 int r; 456 457 switch (urb->status) { 458 case 0: 459 usb_mark_last_busy(ar2->udev); 460 ati_remote2_input_key(ar2); 461 break; 462 case -ENOENT: 463 case -EILSEQ: 464 case -ECONNRESET: 465 case -ESHUTDOWN: 466 dev_dbg(&ar2->intf[1]->dev, 467 "%s(): urb status = %d\n", __func__, urb->status); 468 return; 469 default: 470 usb_mark_last_busy(ar2->udev); 471 dev_err(&ar2->intf[1]->dev, 472 "%s(): urb status = %d\n", __func__, urb->status); 473 } 474 475 r = usb_submit_urb(urb, GFP_ATOMIC); 476 if (r) 477 dev_err(&ar2->intf[1]->dev, 478 "%s(): usb_submit_urb() = %d\n", __func__, r); 479 } 480 481 static int ati_remote2_getkeycode(struct input_dev *idev, 482 struct input_keymap_entry *ke) 483 { 484 struct ati_remote2 *ar2 = input_get_drvdata(idev); 485 unsigned int mode; 486 int offset; 487 unsigned int index; 488 unsigned int scancode; 489 490 if (ke->flags & INPUT_KEYMAP_BY_INDEX) { 491 index = ke->index; 492 if (index >= ATI_REMOTE2_MODES * 493 ARRAY_SIZE(ati_remote2_key_table)) 494 return -EINVAL; 495 496 mode = ke->index / ARRAY_SIZE(ati_remote2_key_table); 497 offset = ke->index % ARRAY_SIZE(ati_remote2_key_table); 498 scancode = (mode << 8) + ati_remote2_key_table[offset].hw_code; 499 } else { 500 if (input_scancode_to_scalar(ke, &scancode)) 501 return -EINVAL; 502 503 mode = scancode >> 8; 504 if (mode > ATI_REMOTE2_PC) 505 return -EINVAL; 506 507 offset = ati_remote2_lookup(scancode & 0xff); 508 if (offset < 0) 509 return -EINVAL; 510 511 index = mode * ARRAY_SIZE(ati_remote2_key_table) + offset; 512 } 513 514 ke->keycode = ar2->keycode[mode][offset]; 515 ke->len = sizeof(scancode); 516 memcpy(&ke->scancode, &scancode, sizeof(scancode)); 517 ke->index = index; 518 519 return 0; 520 } 521 522 static int ati_remote2_setkeycode(struct input_dev *idev, 523 const struct input_keymap_entry *ke, 524 unsigned int *old_keycode) 525 { 526 struct ati_remote2 *ar2 = input_get_drvdata(idev); 527 unsigned int mode; 528 int offset; 529 unsigned int index; 530 unsigned int scancode; 531 532 if (ke->flags & INPUT_KEYMAP_BY_INDEX) { 533 if (ke->index >= ATI_REMOTE2_MODES * 534 ARRAY_SIZE(ati_remote2_key_table)) 535 return -EINVAL; 536 537 mode = ke->index / ARRAY_SIZE(ati_remote2_key_table); 538 offset = ke->index % ARRAY_SIZE(ati_remote2_key_table); 539 } else { 540 if (input_scancode_to_scalar(ke, &scancode)) 541 return -EINVAL; 542 543 mode = scancode >> 8; 544 if (mode > ATI_REMOTE2_PC) 545 return -EINVAL; 546 547 offset = ati_remote2_lookup(scancode & 0xff); 548 if (offset < 0) 549 return -EINVAL; 550 } 551 552 *old_keycode = ar2->keycode[mode][offset]; 553 ar2->keycode[mode][offset] = ke->keycode; 554 __set_bit(ke->keycode, idev->keybit); 555 556 for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) { 557 for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) { 558 if (ar2->keycode[mode][index] == *old_keycode) 559 return 0; 560 } 561 } 562 563 __clear_bit(*old_keycode, idev->keybit); 564 565 return 0; 566 } 567 568 static int ati_remote2_input_init(struct ati_remote2 *ar2) 569 { 570 struct input_dev *idev; 571 int index, mode, retval; 572 573 idev = input_allocate_device(); 574 if (!idev) 575 return -ENOMEM; 576 577 ar2->idev = idev; 578 input_set_drvdata(idev, ar2); 579 580 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL); 581 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 582 BIT_MASK(BTN_RIGHT); 583 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 584 585 for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) { 586 for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) { 587 ar2->keycode[mode][index] = ati_remote2_key_table[index].keycode; 588 __set_bit(ar2->keycode[mode][index], idev->keybit); 589 } 590 } 591 592 /* AUX1-AUX4 and PC generate the same scancode. */ 593 index = ati_remote2_lookup(0x3f); 594 ar2->keycode[ATI_REMOTE2_AUX1][index] = KEY_PROG1; 595 ar2->keycode[ATI_REMOTE2_AUX2][index] = KEY_PROG2; 596 ar2->keycode[ATI_REMOTE2_AUX3][index] = KEY_PROG3; 597 ar2->keycode[ATI_REMOTE2_AUX4][index] = KEY_PROG4; 598 ar2->keycode[ATI_REMOTE2_PC][index] = KEY_PC; 599 __set_bit(KEY_PROG1, idev->keybit); 600 __set_bit(KEY_PROG2, idev->keybit); 601 __set_bit(KEY_PROG3, idev->keybit); 602 __set_bit(KEY_PROG4, idev->keybit); 603 __set_bit(KEY_PC, idev->keybit); 604 605 idev->rep[REP_DELAY] = 250; 606 idev->rep[REP_PERIOD] = 33; 607 608 idev->open = ati_remote2_open; 609 idev->close = ati_remote2_close; 610 611 idev->getkeycode = ati_remote2_getkeycode; 612 idev->setkeycode = ati_remote2_setkeycode; 613 614 idev->name = ar2->name; 615 idev->phys = ar2->phys; 616 617 usb_to_input_id(ar2->udev, &idev->id); 618 idev->dev.parent = &ar2->udev->dev; 619 620 retval = input_register_device(idev); 621 if (retval) 622 input_free_device(idev); 623 624 return retval; 625 } 626 627 static int ati_remote2_urb_init(struct ati_remote2 *ar2) 628 { 629 struct usb_device *udev = ar2->udev; 630 int i, pipe, maxp; 631 632 for (i = 0; i < 2; i++) { 633 ar2->buf[i] = usb_alloc_coherent(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]); 634 if (!ar2->buf[i]) 635 return -ENOMEM; 636 637 ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL); 638 if (!ar2->urb[i]) 639 return -ENOMEM; 640 641 pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress); 642 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); 643 maxp = maxp > 4 ? 4 : maxp; 644 645 usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp, 646 i ? ati_remote2_complete_key : ati_remote2_complete_mouse, 647 ar2, ar2->ep[i]->bInterval); 648 ar2->urb[i]->transfer_dma = ar2->buf_dma[i]; 649 ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 650 } 651 652 return 0; 653 } 654 655 static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2) 656 { 657 int i; 658 659 for (i = 0; i < 2; i++) { 660 usb_free_urb(ar2->urb[i]); 661 usb_free_coherent(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]); 662 } 663 } 664 665 static int ati_remote2_setup(struct ati_remote2 *ar2, unsigned int ch_mask) 666 { 667 int r, i, channel; 668 669 /* 670 * Configure receiver to only accept input from remote "channel" 671 * channel == 0 -> Accept input from any remote channel 672 * channel == 1 -> Only accept input from remote channel 1 673 * channel == 2 -> Only accept input from remote channel 2 674 * ... 675 * channel == 16 -> Only accept input from remote channel 16 676 */ 677 678 channel = 0; 679 for (i = 0; i < 16; i++) { 680 if ((1 << i) & ch_mask) { 681 if (!(~(1 << i) & ch_mask)) 682 channel = i + 1; 683 break; 684 } 685 } 686 687 r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0), 688 0x20, 689 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, 690 channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT); 691 if (r) { 692 dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n", 693 __func__, r); 694 return r; 695 } 696 697 return 0; 698 } 699 700 static ssize_t ati_remote2_show_channel_mask(struct device *dev, 701 struct device_attribute *attr, 702 char *buf) 703 { 704 struct usb_device *udev = to_usb_device(dev); 705 struct usb_interface *intf = usb_ifnum_to_if(udev, 0); 706 struct ati_remote2 *ar2 = usb_get_intfdata(intf); 707 708 return sprintf(buf, "0x%04x\n", ar2->channel_mask); 709 } 710 711 static ssize_t ati_remote2_store_channel_mask(struct device *dev, 712 struct device_attribute *attr, 713 const char *buf, size_t count) 714 { 715 struct usb_device *udev = to_usb_device(dev); 716 struct usb_interface *intf = usb_ifnum_to_if(udev, 0); 717 struct ati_remote2 *ar2 = usb_get_intfdata(intf); 718 unsigned int mask; 719 int r; 720 721 r = kstrtouint(buf, 0, &mask); 722 if (r) 723 return r; 724 725 if (mask & ~ATI_REMOTE2_MAX_CHANNEL_MASK) 726 return -EINVAL; 727 728 r = usb_autopm_get_interface(ar2->intf[0]); 729 if (r) { 730 dev_err(&ar2->intf[0]->dev, 731 "%s(): usb_autopm_get_interface() = %d\n", __func__, r); 732 return r; 733 } 734 735 mutex_lock(&ati_remote2_mutex); 736 737 if (mask != ar2->channel_mask) { 738 r = ati_remote2_setup(ar2, mask); 739 if (!r) 740 ar2->channel_mask = mask; 741 } 742 743 mutex_unlock(&ati_remote2_mutex); 744 745 usb_autopm_put_interface(ar2->intf[0]); 746 747 return r ? r : count; 748 } 749 750 static ssize_t ati_remote2_show_mode_mask(struct device *dev, 751 struct device_attribute *attr, 752 char *buf) 753 { 754 struct usb_device *udev = to_usb_device(dev); 755 struct usb_interface *intf = usb_ifnum_to_if(udev, 0); 756 struct ati_remote2 *ar2 = usb_get_intfdata(intf); 757 758 return sprintf(buf, "0x%02x\n", ar2->mode_mask); 759 } 760 761 static ssize_t ati_remote2_store_mode_mask(struct device *dev, 762 struct device_attribute *attr, 763 const char *buf, size_t count) 764 { 765 struct usb_device *udev = to_usb_device(dev); 766 struct usb_interface *intf = usb_ifnum_to_if(udev, 0); 767 struct ati_remote2 *ar2 = usb_get_intfdata(intf); 768 unsigned int mask; 769 int err; 770 771 err = kstrtouint(buf, 0, &mask); 772 if (err) 773 return err; 774 775 if (mask & ~ATI_REMOTE2_MAX_MODE_MASK) 776 return -EINVAL; 777 778 ar2->mode_mask = mask; 779 780 return count; 781 } 782 783 static DEVICE_ATTR(channel_mask, 0644, ati_remote2_show_channel_mask, 784 ati_remote2_store_channel_mask); 785 786 static DEVICE_ATTR(mode_mask, 0644, ati_remote2_show_mode_mask, 787 ati_remote2_store_mode_mask); 788 789 static struct attribute *ati_remote2_attrs[] = { 790 &dev_attr_channel_mask.attr, 791 &dev_attr_mode_mask.attr, 792 NULL, 793 }; 794 795 static struct attribute_group ati_remote2_attr_group = { 796 .attrs = ati_remote2_attrs, 797 }; 798 799 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id) 800 { 801 struct usb_device *udev = interface_to_usbdev(interface); 802 struct usb_host_interface *alt = interface->cur_altsetting; 803 struct ati_remote2 *ar2; 804 int r; 805 806 if (alt->desc.bInterfaceNumber) 807 return -ENODEV; 808 809 ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL); 810 if (!ar2) 811 return -ENOMEM; 812 813 ar2->udev = udev; 814 815 /* Sanity check, first interface must have an endpoint */ 816 if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) { 817 dev_err(&interface->dev, 818 "%s(): interface 0 must have an endpoint\n", __func__); 819 r = -ENODEV; 820 goto fail1; 821 } 822 ar2->intf[0] = interface; 823 ar2->ep[0] = &alt->endpoint[0].desc; 824 825 /* Sanity check, the device must have two interfaces */ 826 ar2->intf[1] = usb_ifnum_to_if(udev, 1); 827 if ((udev->actconfig->desc.bNumInterfaces < 2) || !ar2->intf[1]) { 828 dev_err(&interface->dev, "%s(): need 2 interfaces, found %d\n", 829 __func__, udev->actconfig->desc.bNumInterfaces); 830 r = -ENODEV; 831 goto fail1; 832 } 833 834 r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2); 835 if (r) 836 goto fail1; 837 838 /* Sanity check, second interface must have an endpoint */ 839 alt = ar2->intf[1]->cur_altsetting; 840 if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) { 841 dev_err(&interface->dev, 842 "%s(): interface 1 must have an endpoint\n", __func__); 843 r = -ENODEV; 844 goto fail2; 845 } 846 ar2->ep[1] = &alt->endpoint[0].desc; 847 848 r = ati_remote2_urb_init(ar2); 849 if (r) 850 goto fail3; 851 852 ar2->channel_mask = channel_mask; 853 ar2->mode_mask = mode_mask; 854 855 r = ati_remote2_setup(ar2, ar2->channel_mask); 856 if (r) 857 goto fail3; 858 859 usb_make_path(udev, ar2->phys, sizeof(ar2->phys)); 860 strlcat(ar2->phys, "/input0", sizeof(ar2->phys)); 861 862 strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name)); 863 864 r = sysfs_create_group(&udev->dev.kobj, &ati_remote2_attr_group); 865 if (r) 866 goto fail3; 867 868 r = ati_remote2_input_init(ar2); 869 if (r) 870 goto fail4; 871 872 usb_set_intfdata(interface, ar2); 873 874 interface->needs_remote_wakeup = 1; 875 876 return 0; 877 878 fail4: 879 sysfs_remove_group(&udev->dev.kobj, &ati_remote2_attr_group); 880 fail3: 881 ati_remote2_urb_cleanup(ar2); 882 fail2: 883 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]); 884 fail1: 885 kfree(ar2); 886 887 return r; 888 } 889 890 static void ati_remote2_disconnect(struct usb_interface *interface) 891 { 892 struct ati_remote2 *ar2; 893 struct usb_host_interface *alt = interface->cur_altsetting; 894 895 if (alt->desc.bInterfaceNumber) 896 return; 897 898 ar2 = usb_get_intfdata(interface); 899 usb_set_intfdata(interface, NULL); 900 901 input_unregister_device(ar2->idev); 902 903 sysfs_remove_group(&ar2->udev->dev.kobj, &ati_remote2_attr_group); 904 905 ati_remote2_urb_cleanup(ar2); 906 907 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]); 908 909 kfree(ar2); 910 } 911 912 static int ati_remote2_suspend(struct usb_interface *interface, 913 pm_message_t message) 914 { 915 struct ati_remote2 *ar2; 916 struct usb_host_interface *alt = interface->cur_altsetting; 917 918 if (alt->desc.bInterfaceNumber) 919 return 0; 920 921 ar2 = usb_get_intfdata(interface); 922 923 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 924 925 mutex_lock(&ati_remote2_mutex); 926 927 if (ar2->flags & ATI_REMOTE2_OPENED) 928 ati_remote2_kill_urbs(ar2); 929 930 ar2->flags |= ATI_REMOTE2_SUSPENDED; 931 932 mutex_unlock(&ati_remote2_mutex); 933 934 return 0; 935 } 936 937 static int ati_remote2_resume(struct usb_interface *interface) 938 { 939 struct ati_remote2 *ar2; 940 struct usb_host_interface *alt = interface->cur_altsetting; 941 int r = 0; 942 943 if (alt->desc.bInterfaceNumber) 944 return 0; 945 946 ar2 = usb_get_intfdata(interface); 947 948 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 949 950 mutex_lock(&ati_remote2_mutex); 951 952 if (ar2->flags & ATI_REMOTE2_OPENED) 953 r = ati_remote2_submit_urbs(ar2); 954 955 if (!r) 956 ar2->flags &= ~ATI_REMOTE2_SUSPENDED; 957 958 mutex_unlock(&ati_remote2_mutex); 959 960 return r; 961 } 962 963 static int ati_remote2_reset_resume(struct usb_interface *interface) 964 { 965 struct ati_remote2 *ar2; 966 struct usb_host_interface *alt = interface->cur_altsetting; 967 int r = 0; 968 969 if (alt->desc.bInterfaceNumber) 970 return 0; 971 972 ar2 = usb_get_intfdata(interface); 973 974 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 975 976 mutex_lock(&ati_remote2_mutex); 977 978 r = ati_remote2_setup(ar2, ar2->channel_mask); 979 if (r) 980 goto out; 981 982 if (ar2->flags & ATI_REMOTE2_OPENED) 983 r = ati_remote2_submit_urbs(ar2); 984 985 if (!r) 986 ar2->flags &= ~ATI_REMOTE2_SUSPENDED; 987 988 out: 989 mutex_unlock(&ati_remote2_mutex); 990 991 return r; 992 } 993 994 static int ati_remote2_pre_reset(struct usb_interface *interface) 995 { 996 struct ati_remote2 *ar2; 997 struct usb_host_interface *alt = interface->cur_altsetting; 998 999 if (alt->desc.bInterfaceNumber) 1000 return 0; 1001 1002 ar2 = usb_get_intfdata(interface); 1003 1004 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 1005 1006 mutex_lock(&ati_remote2_mutex); 1007 1008 if (ar2->flags == ATI_REMOTE2_OPENED) 1009 ati_remote2_kill_urbs(ar2); 1010 1011 return 0; 1012 } 1013 1014 static int ati_remote2_post_reset(struct usb_interface *interface) 1015 { 1016 struct ati_remote2 *ar2; 1017 struct usb_host_interface *alt = interface->cur_altsetting; 1018 int r = 0; 1019 1020 if (alt->desc.bInterfaceNumber) 1021 return 0; 1022 1023 ar2 = usb_get_intfdata(interface); 1024 1025 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); 1026 1027 if (ar2->flags == ATI_REMOTE2_OPENED) 1028 r = ati_remote2_submit_urbs(ar2); 1029 1030 mutex_unlock(&ati_remote2_mutex); 1031 1032 return r; 1033 } 1034 1035 module_usb_driver(ati_remote2_driver); 1036