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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 | /* * Freescale QUICC Engine USB Host Controller Driver * * Copyright (c) Freescale Semicondutor, Inc. 2006. * Shlomi Gridish <gridish@freescale.com> * Jerry Huang <Chang-Ming.Huang@freescale.com> * Copyright (c) Logic Product Development, Inc. 2007 * Peter Barada <peterb@logicpd.com> * Copyright (c) MontaVista Software, Inc. 2008. * Anton Vorontsov <avorontsov@ru.mvista.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <linux/module.h> #include <linux/types.h> #include <linux/spinlock.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/of_platform.h> #include <linux/of_gpio.h> #include <linux/slab.h> #include <asm/qe.h> #include <asm/fsl_gtm.h> #include "fhci.h" void fhci_start_sof_timer(struct fhci_hcd *fhci) { fhci_dbg(fhci, "-> %s\n", __func__); /* clear frame_n */ out_be16(&fhci->pram->frame_num, 0); out_be16(&fhci->regs->usb_sof_tmr, 0); setbits8(&fhci->regs->usb_mod, USB_MODE_SFTE); fhci_dbg(fhci, "<- %s\n", __func__); } void fhci_stop_sof_timer(struct fhci_hcd *fhci) { fhci_dbg(fhci, "-> %s\n", __func__); clrbits8(&fhci->regs->usb_mod, USB_MODE_SFTE); gtm_stop_timer16(fhci->timer); fhci_dbg(fhci, "<- %s\n", __func__); } u16 fhci_get_sof_timer_count(struct fhci_usb *usb) { return be16_to_cpu(in_be16(&usb->fhci->regs->usb_sof_tmr) / 12); } /* initialize the endpoint zero */ static u32 endpoint_zero_init(struct fhci_usb *usb, enum fhci_mem_alloc data_mem, u32 ring_len) { u32 rc; rc = fhci_create_ep(usb, data_mem, ring_len); if (rc) return rc; /* inilialize endpoint registers */ fhci_init_ep_registers(usb, usb->ep0, data_mem); return 0; } /* enable the USB interrupts */ void fhci_usb_enable_interrupt(struct fhci_usb *usb) { struct fhci_hcd *fhci = usb->fhci; if (usb->intr_nesting_cnt == 1) { /* initialize the USB interrupt */ enable_irq(fhci_to_hcd(fhci)->irq); /* initialize the event register and mask register */ out_be16(&usb->fhci->regs->usb_event, 0xffff); out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); /* enable the timer interrupts */ enable_irq(fhci->timer->irq); } else if (usb->intr_nesting_cnt > 1) fhci_info(fhci, "unbalanced USB interrupts nesting\n"); usb->intr_nesting_cnt--; } /* disable the usb interrupt */ void fhci_usb_disable_interrupt(struct fhci_usb *usb) { struct fhci_hcd *fhci = usb->fhci; if (usb->intr_nesting_cnt == 0) { /* disable the timer interrupt */ disable_irq_nosync(fhci->timer->irq); /* disable the usb interrupt */ disable_irq_nosync(fhci_to_hcd(fhci)->irq); out_be16(&usb->fhci->regs->usb_mask, 0); } usb->intr_nesting_cnt++; } /* enable the USB controller */ static u32 fhci_usb_enable(struct fhci_hcd *fhci) { struct fhci_usb *usb = fhci->usb_lld; out_be16(&usb->fhci->regs->usb_event, 0xffff); out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); setbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); mdelay(100); return 0; } /* disable the USB controller */ static u32 fhci_usb_disable(struct fhci_hcd *fhci) { struct fhci_usb *usb = fhci->usb_lld; fhci_usb_disable_interrupt(usb); fhci_port_disable(fhci); /* disable the usb controller */ if (usb->port_status == FHCI_PORT_FULL || usb->port_status == FHCI_PORT_LOW) fhci_device_disconnected_interrupt(fhci); clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); return 0; } /* check the bus state by polling the QE bit on the IO ports */ int fhci_ioports_check_bus_state(struct fhci_hcd *fhci) { u8 bits = 0; /* check USBOE,if transmitting,exit */ if (!gpio_get_value(fhci->gpios[GPIO_USBOE])) return -1; /* check USBRP */ if (gpio_get_value(fhci->gpios[GPIO_USBRP])) bits |= 0x2; /* check USBRN */ if (gpio_get_value(fhci->gpios[GPIO_USBRN])) bits |= 0x1; return bits; } static void fhci_mem_free(struct fhci_hcd *fhci) { struct ed *ed; struct ed *next_ed; struct td *td; struct td *next_td; list_for_each_entry_safe(ed, next_ed, &fhci->empty_eds, node) { list_del(&ed->node); kfree(ed); } list_for_each_entry_safe(td, next_td, &fhci->empty_tds, node) { list_del(&td->node); kfree(td); } kfree(fhci->vroot_hub); fhci->vroot_hub = NULL; kfree(fhci->hc_list); fhci->hc_list = NULL; } static int fhci_mem_init(struct fhci_hcd *fhci) { int i; fhci->hc_list = kzalloc(sizeof(*fhci->hc_list), GFP_KERNEL); if (!fhci->hc_list) goto err; INIT_LIST_HEAD(&fhci->hc_list->ctrl_list); INIT_LIST_HEAD(&fhci->hc_list->bulk_list); INIT_LIST_HEAD(&fhci->hc_list->iso_list); INIT_LIST_HEAD(&fhci->hc_list->intr_list); INIT_LIST_HEAD(&fhci->hc_list->done_list); fhci->vroot_hub = kzalloc(sizeof(*fhci->vroot_hub), GFP_KERNEL); if (!fhci->vroot_hub) goto err; INIT_LIST_HEAD(&fhci->empty_eds); INIT_LIST_HEAD(&fhci->empty_tds); /* initialize work queue to handle done list */ fhci_tasklet.data = (unsigned long)fhci; fhci->process_done_task = &fhci_tasklet; for (i = 0; i < MAX_TDS; i++) { struct td *td; td = kmalloc(sizeof(*td), GFP_KERNEL); if (!td) goto err; fhci_recycle_empty_td(fhci, td); } for (i = 0; i < MAX_EDS; i++) { struct ed *ed; ed = kmalloc(sizeof(*ed), GFP_KERNEL); if (!ed) goto err; fhci_recycle_empty_ed(fhci, ed); } fhci->active_urbs = 0; return 0; err: fhci_mem_free(fhci); return -ENOMEM; } /* destroy the fhci_usb structure */ static void fhci_usb_free(void *lld) { struct fhci_usb *usb = lld; struct fhci_hcd *fhci; if (usb) { fhci = usb->fhci; fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF); fhci_ep0_free(usb); kfree(usb->actual_frame); kfree(usb); } } /* initialize the USB */ static int fhci_usb_init(struct fhci_hcd *fhci) { struct fhci_usb *usb = fhci->usb_lld; memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE); usb->port_status = FHCI_PORT_DISABLED; usb->max_frame_usage = FRAME_TIME_USAGE; usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION; usb->actual_frame = kzalloc(sizeof(*usb->actual_frame), GFP_KERNEL); if (!usb->actual_frame) { fhci_usb_free(usb); return -ENOMEM; } INIT_LIST_HEAD(&usb->actual_frame->tds_list); /* initializing registers on chip, clear frame number */ out_be16(&fhci->pram->frame_num, 0); /* clear rx state */ out_be32(&fhci->pram->rx_state, 0); /* set mask register */ usb->saved_msk = (USB_E_TXB_MASK | USB_E_TXE1_MASK | USB_E_IDLE_MASK | USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK); out_8(&usb->fhci->regs->usb_mod, USB_MODE_HOST | USB_MODE_EN); /* clearing the mask register */ out_be16(&usb->fhci->regs->usb_mask, 0); /* initialing the event register */ out_be16(&usb->fhci->regs->usb_event, 0xffff); if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) { fhci_usb_free(usb); return -EINVAL; } return 0; } /* initialize the fhci_usb struct and the corresponding data staruct */ static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci) { struct fhci_usb *usb; /* allocate memory for SCC data structure */ usb = kzalloc(sizeof(*usb), GFP_KERNEL); if (!usb) { fhci_err(fhci, "no memory for SCC data struct\n"); return NULL; } usb->fhci = fhci; usb->hc_list = fhci->hc_list; usb->vroot_hub = fhci->vroot_hub; usb->transfer_confirm = fhci_transfer_confirm_callback; return usb; } static int fhci_start(struct usb_hcd *hcd) { int ret; struct fhci_hcd *fhci = hcd_to_fhci(hcd); ret = fhci_mem_init(fhci); if (ret) { fhci_err(fhci, "failed to allocate memory\n"); goto err; } fhci->usb_lld = fhci_create_lld(fhci); if (!fhci->usb_lld) { fhci_err(fhci, "low level driver config failed\n"); ret = -ENOMEM; goto err; } ret = fhci_usb_init(fhci); if (ret) { fhci_err(fhci, "low level driver initialize failed\n"); goto err; } spin_lock_init(&fhci->lock); /* connect the virtual root hub */ fhci->vroot_hub->dev_num = 1; /* this field may be needed to fix */ fhci->vroot_hub->hub.wHubStatus = 0; fhci->vroot_hub->hub.wHubChange = 0; fhci->vroot_hub->port.wPortStatus = 0; fhci->vroot_hub->port.wPortChange = 0; hcd->state = HC_STATE_RUNNING; /* * From here on, khubd concurrently accesses the root * hub; drivers will be talking to enumerated devices. * (On restart paths, khubd already knows about the root * hub and could find work as soon as we wrote FLAG_CF.) * * Before this point the HC was idle/ready. After, khubd * and device drivers may start it running. */ fhci_usb_enable(fhci); return 0; err: fhci_mem_free(fhci); return ret; } static void fhci_stop(struct usb_hcd *hcd) { struct fhci_hcd *fhci = hcd_to_fhci(hcd); fhci_usb_disable_interrupt(fhci->usb_lld); fhci_usb_disable(fhci); fhci_usb_free(fhci->usb_lld); fhci->usb_lld = NULL; fhci_mem_free(fhci); } static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { struct fhci_hcd *fhci = hcd_to_fhci(hcd); u32 pipe = urb->pipe; int ret; int i; int size = 0; struct urb_priv *urb_priv; unsigned long flags; switch (usb_pipetype(pipe)) { case PIPE_CONTROL: /* 1 td fro setup,1 for ack */ size = 2; case PIPE_BULK: /* one td for every 4096 bytes(can be up to 8k) */ size += urb->transfer_buffer_length / 4096; /* ...add for any remaining bytes... */ if ((urb->transfer_buffer_length % 4096) != 0) size++; /* ..and maybe a zero length packet to wrap it up */ if (size == 0) size++; else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0 && (urb->transfer_buffer_length % usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe))) != 0) size++; break; case PIPE_ISOCHRONOUS: size = urb->number_of_packets; if (size <= 0) return -EINVAL; for (i = 0; i < urb->number_of_packets; i++) { urb->iso_frame_desc[i].actual_length = 0; urb->iso_frame_desc[i].status = (u32) (-EXDEV); } break; case PIPE_INTERRUPT: size = 1; } /* allocate the private part of the URB */ urb_priv = kzalloc(sizeof(*urb_priv), mem_flags); if (!urb_priv) return -ENOMEM; /* allocate the private part of the URB */ urb_priv->tds = kcalloc(size, sizeof(*urb_priv->tds), mem_flags); if (!urb_priv->tds) { kfree(urb_priv); return -ENOMEM; } spin_lock_irqsave(&fhci->lock, flags); ret = usb_hcd_link_urb_to_ep(hcd, urb); if (ret) goto err; /* fill the private part of the URB */ urb_priv->num_of_tds = size; urb->status = -EINPROGRESS; urb->actual_length = 0; urb->error_count = 0; urb->hcpriv = urb_priv; fhci_queue_urb(fhci, urb); err: if (ret) { kfree(urb_priv->tds); kfree(urb_priv); } spin_unlock_irqrestore(&fhci->lock, flags); return ret; } /* dequeue FHCI URB */ static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { struct fhci_hcd *fhci = hcd_to_fhci(hcd); struct fhci_usb *usb = fhci->usb_lld; int ret = -EINVAL; unsigned long flags; if (!urb || !urb->dev || !urb->dev->bus) goto out; spin_lock_irqsave(&fhci->lock, flags); ret = usb_hcd_check_unlink_urb(hcd, urb, status); if (ret) goto out2; if (usb->port_status != FHCI_PORT_DISABLED) { struct urb_priv *urb_priv; /* * flag the urb's data for deletion in some upcoming * SF interrupt's delete list processing */ urb_priv = urb->hcpriv; if (!urb_priv || (urb_priv->state == URB_DEL)) goto out2; urb_priv->state = URB_DEL; /* already pending? */ urb_priv->ed->state = FHCI_ED_URB_DEL; } else { fhci_urb_complete_free(fhci, urb); } out2: spin_unlock_irqrestore(&fhci->lock, flags); out: return ret; } static void fhci_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep) { struct fhci_hcd *fhci; struct ed *ed; unsigned long flags; fhci = hcd_to_fhci(hcd); spin_lock_irqsave(&fhci->lock, flags); ed = ep->hcpriv; if (ed) { while (ed->td_head != NULL) { struct td *td = fhci_remove_td_from_ed(ed); fhci_urb_complete_free(fhci, td->urb); } fhci_recycle_empty_ed(fhci, ed); ep->hcpriv = NULL; } spin_unlock_irqrestore(&fhci->lock, flags); } static int fhci_get_frame_number(struct usb_hcd *hcd) { struct fhci_hcd *fhci = hcd_to_fhci(hcd); return get_frame_num(fhci); } static const struct hc_driver fhci_driver = { .description = "fsl,usb-fhci", .product_desc = "FHCI HOST Controller", .hcd_priv_size = sizeof(struct fhci_hcd), /* generic hardware linkage */ .irq = fhci_irq, .flags = HCD_USB11 | HCD_MEMORY, /* basic lifecycle operation */ .start = fhci_start, .stop = fhci_stop, /* managing i/o requests and associated device resources */ .urb_enqueue = fhci_urb_enqueue, .urb_dequeue = fhci_urb_dequeue, .endpoint_disable = fhci_endpoint_disable, /* scheduling support */ .get_frame_number = fhci_get_frame_number, /* root hub support */ .hub_status_data = fhci_hub_status_data, .hub_control = fhci_hub_control, }; static int __devinit of_fhci_probe(struct platform_device *ofdev) { struct device *dev = &ofdev->dev; struct device_node *node = dev->of_node; struct usb_hcd *hcd; struct fhci_hcd *fhci; struct resource usb_regs; unsigned long pram_addr; unsigned int usb_irq; const char *sprop; const u32 *iprop; int size; int ret; int i; int j; if (usb_disabled()) return -ENODEV; sprop = of_get_property(node, "mode", NULL); if (sprop && strcmp(sprop, "host")) return -ENODEV; hcd = usb_create_hcd(&fhci_driver, dev, dev_name(dev)); if (!hcd) { dev_err(dev, "could not create hcd\n"); return -ENOMEM; } fhci = hcd_to_fhci(hcd); hcd->self.controller = dev; dev_set_drvdata(dev, hcd); iprop = of_get_property(node, "hub-power-budget", &size); if (iprop && size == sizeof(*iprop)) hcd->power_budget = *iprop; /* FHCI registers. */ ret = of_address_to_resource(node, 0, &usb_regs); if (ret) { dev_err(dev, "could not get regs\n"); goto err_regs; } hcd->regs = ioremap(usb_regs.start, usb_regs.end - usb_regs.start + 1); if (!hcd->regs) { dev_err(dev, "could not ioremap regs\n"); ret = -ENOMEM; goto err_regs; } fhci->regs = hcd->regs; /* Parameter RAM. */ iprop = of_get_property(node, "reg", &size); if (!iprop || size < sizeof(*iprop) * 4) { dev_err(dev, "can't get pram offset\n"); ret = -EINVAL; goto err_pram; } pram_addr = cpm_muram_alloc_fixed(iprop[2], FHCI_PRAM_SIZE); if (IS_ERR_VALUE(pram_addr)) { dev_err(dev, "failed to allocate usb pram\n"); ret = -ENOMEM; goto err_pram; } fhci->pram = cpm_muram_addr(pram_addr); /* GPIOs and pins */ for (i = 0; i < NUM_GPIOS; i++) { int gpio; enum of_gpio_flags flags; gpio = of_get_gpio_flags(node, i, &flags); fhci->gpios[i] = gpio; fhci->alow_gpios[i] = flags & OF_GPIO_ACTIVE_LOW; if (!gpio_is_valid(gpio)) { if (i < GPIO_SPEED) { dev_err(dev, "incorrect GPIO%d: %d\n", i, gpio); goto err_gpios; } else { dev_info(dev, "assuming board doesn't have " "%s gpio\n", i == GPIO_SPEED ? "speed" : "power"); continue; } } ret = gpio_request(gpio, dev_name(dev)); if (ret) { dev_err(dev, "failed to request gpio %d", i); goto err_gpios; } if (i >= GPIO_SPEED) { ret = gpio_direction_output(gpio, 0); if (ret) { dev_err(dev, "failed to set gpio %d as " "an output\n", i); i++; goto err_gpios; } } } for (j = 0; j < NUM_PINS; j++) { fhci->pins[j] = qe_pin_request(node, j); if (IS_ERR(fhci->pins[j])) { ret = PTR_ERR(fhci->pins[j]); dev_err(dev, "can't get pin %d: %d\n", j, ret); goto err_pins; } } /* Frame limit timer and its interrupt. */ fhci->timer = gtm_get_timer16(); if (IS_ERR(fhci->timer)) { ret = PTR_ERR(fhci->timer); dev_err(dev, "failed to request qe timer: %i", ret); goto err_get_timer; } ret = request_irq(fhci->timer->irq, fhci_frame_limit_timer_irq, IRQF_DISABLED, "qe timer (usb)", hcd); if (ret) { dev_err(dev, "failed to request timer irq"); goto err_timer_irq; } /* USB Host interrupt. */ usb_irq = irq_of_parse_and_map(node, 0); if (usb_irq == NO_IRQ) { dev_err(dev, "could not get usb irq\n"); ret = -EINVAL; goto err_usb_irq; } /* Clocks. */ sprop = of_get_property(node, "fsl,fullspeed-clock", NULL); if (sprop) { fhci->fullspeed_clk = qe_clock_source(sprop); if (fhci->fullspeed_clk == QE_CLK_DUMMY) { dev_err(dev, "wrong fullspeed-clock\n"); ret = -EINVAL; goto err_clocks; } } sprop = of_get_property(node, "fsl,lowspeed-clock", NULL); if (sprop) { fhci->lowspeed_clk = qe_clock_source(sprop); if (fhci->lowspeed_clk == QE_CLK_DUMMY) { dev_err(dev, "wrong lowspeed-clock\n"); ret = -EINVAL; goto err_clocks; } } if (fhci->fullspeed_clk == QE_CLK_NONE && fhci->lowspeed_clk == QE_CLK_NONE) { dev_err(dev, "no clocks specified\n"); ret = -EINVAL; goto err_clocks; } dev_info(dev, "at 0x%p, irq %d\n", hcd->regs, usb_irq); fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF); /* Start with full-speed, if possible. */ if (fhci->fullspeed_clk != QE_CLK_NONE) { fhci_config_transceiver(fhci, FHCI_PORT_FULL); qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK); } else { fhci_config_transceiver(fhci, FHCI_PORT_LOW); qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3); } /* Clear and disable any pending interrupts. */ out_be16(&fhci->regs->usb_event, 0xffff); out_be16(&fhci->regs->usb_mask, 0); ret = usb_add_hcd(hcd, usb_irq, IRQF_DISABLED); if (ret < 0) goto err_add_hcd; fhci_dfs_create(fhci); return 0; err_add_hcd: err_clocks: irq_dispose_mapping(usb_irq); err_usb_irq: free_irq(fhci->timer->irq, hcd); err_timer_irq: gtm_put_timer16(fhci->timer); err_get_timer: err_pins: while (--j >= 0) qe_pin_free(fhci->pins[j]); err_gpios: while (--i >= 0) { if (gpio_is_valid(fhci->gpios[i])) gpio_free(fhci->gpios[i]); } cpm_muram_free(pram_addr); err_pram: iounmap(hcd->regs); err_regs: usb_put_hcd(hcd); return ret; } static int __devexit fhci_remove(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct fhci_hcd *fhci = hcd_to_fhci(hcd); int i; int j; usb_remove_hcd(hcd); free_irq(fhci->timer->irq, hcd); gtm_put_timer16(fhci->timer); cpm_muram_free(cpm_muram_offset(fhci->pram)); for (i = 0; i < NUM_GPIOS; i++) { if (!gpio_is_valid(fhci->gpios[i])) continue; gpio_free(fhci->gpios[i]); } for (j = 0; j < NUM_PINS; j++) qe_pin_free(fhci->pins[j]); fhci_dfs_destroy(fhci); usb_put_hcd(hcd); return 0; } static int __devexit of_fhci_remove(struct platform_device *ofdev) { return fhci_remove(&ofdev->dev); } static const struct of_device_id of_fhci_match[] = { { .compatible = "fsl,mpc8323-qe-usb", }, {}, }; MODULE_DEVICE_TABLE(of, of_fhci_match); static struct platform_driver of_fhci_driver = { .driver = { .name = "fsl,usb-fhci", .owner = THIS_MODULE, .of_match_table = of_fhci_match, }, .probe = of_fhci_probe, .remove = __devexit_p(of_fhci_remove), }; static int __init fhci_module_init(void) { return platform_driver_register(&of_fhci_driver); } module_init(fhci_module_init); static void __exit fhci_module_exit(void) { platform_driver_unregister(&of_fhci_driver); } module_exit(fhci_module_exit); MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver"); MODULE_AUTHOR("Shlomi Gridish <gridish@freescale.com>, " "Jerry Huang <Chang-Ming.Huang@freescale.com>, " "Anton Vorontsov <avorontsov@ru.mvista.com>"); MODULE_LICENSE("GPL"); |