drivers/usb/host/ehci-fsl.c

   1 /*
   2  * Copyright 2005-2009 MontaVista Software, Inc.
   3  * Copyright 2008,2012      Freescale Semiconductor, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software Foundation,
  17  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
  20  * by Hunter Wu.
  21  * Power Management support by Dave Liu <daveliu@freescale.com>,
  22  * Jerry Huang <Chang-Ming.Huang@freescale.com> and
  23  * Anton Vorontsov <avorontsov@ru.mvista.com>.
  24  */
  25
  26 #include <linux/kernel.h>
  27 #include <linux/types.h>
  28 #include <linux/delay.h>
  29 #include <linux/pm.h>
  30 #include <linux/err.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/fsl_devices.h>
  33
  34 #include "ehci-fsl.h"
  35
  36 /* configure so an HC device and id are always provided */
  37 /* always called with process context; sleeping is OK */
  38
  39 /**
  40  * usb_hcd_fsl_probe - initialize FSL-based HCDs
  41  * @drvier: Driver to be used for this HCD
  42  * @pdev: USB Host Controller being probed
  43  * Context: !in_interrupt()
  44  *
  45  * Allocates basic resources for this USB host controller.
  46  *
  47  */
  48 static int usb_hcd_fsl_probe(const struct hc_driver *driver,
  49                              struct platform_device *pdev)
  50 {
  51         struct fsl_usb2_platform_data *pdata;
  52         struct usb_hcd *hcd;
  53         struct resource *res;
  54         int irq;
  55         int retval;
  56
  57         pr_debug("initializing FSL-SOC USB Controller\n");
  58
  59         /* Need platform data for setup */
  60         pdata = dev_get_platdata(&pdev->dev);
  61         if (!pdata) {
  62                 dev_err(&pdev->dev,
  63                         "No platform data for %s.\n", dev_name(&pdev->dev));
  64                 return -ENODEV;
  65         }
  66
  67         /*
  68          * This is a host mode driver, verify that we're supposed to be
  69          * in host mode.
  70          */
  71         if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
  72               (pdata->operating_mode == FSL_USB2_MPH_HOST) ||
  73               (pdata->operating_mode == FSL_USB2_DR_OTG))) {
  74                 dev_err(&pdev->dev,
  75                         "Non Host Mode configured for %s. Wrong driver linked.\n",
  76                         dev_name(&pdev->dev));
  77                 return -ENODEV;
  78         }
  79
  80         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
  81         if (!res) {
  82                 dev_err(&pdev->dev,
  83                         "Found HC with no IRQ. Check %s setup!\n",
  84                         dev_name(&pdev->dev));
  85                 return -ENODEV;
  86         }
  87         irq = res->start;
  88
  89         hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
  90         if (!hcd) {
  91                 retval = -ENOMEM;
  92                 goto err1;
  93         }
  94
  95         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  96         if (!res) {
  97                 dev_err(&pdev->dev,
  98                         "Found HC with no register addr. Check %s setup!\n",
  99                         dev_name(&pdev->dev));
 100                 retval = -ENODEV;
 101                 goto err2;
 102         }
 103         hcd->rsrc_start = res->start;
 104         hcd->rsrc_len = resource_size(res);
 105         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
 106                                 driver->description)) {
 107                 dev_dbg(&pdev->dev, "controller already in use\n");
 108                 retval = -EBUSY;
 109                 goto err2;
 110         }
 111         hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 112
 113         if (hcd->regs == NULL) {
 114                 dev_dbg(&pdev->dev, "error mapping memory\n");
 115                 retval = -EFAULT;
 116                 goto err3;
 117         }
 118
 119         pdata->regs = hcd->regs;
 120
 121         if (pdata->power_budget)
 122                 hcd->power_budget = pdata->power_budget;
 123
 124         /*
 125          * do platform specific init: check the clock, grab/config pins, etc.
 126          */
 127         if (pdata->init && pdata->init(pdev)) {
 128                 retval = -ENODEV;
 129                 goto err4;
 130         }
 131
 132         /* Enable USB controller, 83xx or 8536 */
 133         if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6)
 134                 setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4);
 135
 136         /* Don't need to set host mode here. It will be done by tdi_reset() */
 137
 138         retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
 139         if (retval != 0)
 140                 goto err4;
 141
 142 #ifdef CONFIG_USB_OTG
 143         if (pdata->operating_mode == FSL_USB2_DR_OTG) {
 144                 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 145
 146                 hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
 147                 dev_dbg(&pdev->dev, "hcd=0x%p  ehci=0x%p, phy=0x%p\n",
 148                         hcd, ehci, hcd->phy);
 149
 150                 if (!IS_ERR_OR_NULL(hcd->phy)) {
 151                         retval = otg_set_host(hcd->phy->otg,
 152                                               &ehci_to_hcd(ehci)->self);
 153                         if (retval) {
 154                                 usb_put_phy(hcd->phy);
 155                                 goto err4;
 156                         }
 157                 } else {
 158                         dev_err(&pdev->dev, "can't find phy\n");
 159                         retval = -ENODEV;
 160                         goto err4;
 161                 }
 162         }
 163 #endif
 164         return retval;
 165
 166       err4:
 167         iounmap(hcd->regs);
 168       err3:
 169         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 170       err2:
 171         usb_put_hcd(hcd);
 172       err1:
 173         dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
 174         if (pdata->exit)
 175                 pdata->exit(pdev);
 176         return retval;
 177 }
 178
 179 /* may be called without controller electrically present */
 180 /* may be called with controller, bus, and devices active */
 181
 182 /**
 183  * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
 184  * @dev: USB Host Controller being removed
 185  * Context: !in_interrupt()
 186  *
 187  * Reverses the effect of usb_hcd_fsl_probe().
 188  *
 189  */
 190 static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
 191                                struct platform_device *pdev)
 192 {
 193         struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
 194
 195         if (!IS_ERR_OR_NULL(hcd->phy)) {
 196                 otg_set_host(hcd->phy->otg, NULL);
 197                 usb_put_phy(hcd->phy);
 198         }
 199
 200         usb_remove_hcd(hcd);
 201
 202         /*
 203          * do platform specific un-initialization:
 204          * release iomux pins, disable clock, etc.
 205          */
 206         if (pdata->exit)
 207                 pdata->exit(pdev);
 208         iounmap(hcd->regs);
 209         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 210         usb_put_hcd(hcd);
 211 }
 212
 213 static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
 214                                enum fsl_usb2_phy_modes phy_mode,
 215                                unsigned int port_offset)
 216 {
 217         u32 portsc;
 218         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 219         void __iomem *non_ehci = hcd->regs;
 220         struct device *dev = hcd->self.controller;
 221         struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
 222
 223         if (pdata->controller_ver < 0) {
 224                 dev_warn(hcd->self.controller, "Could not get controller version\n");
 225                 return -ENODEV;
 226         }
 227
 228         portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);
 229         portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
 230
 231         switch (phy_mode) {
 232         case FSL_USB2_PHY_ULPI:
 233                 if (pdata->have_sysif_regs && pdata->controller_ver) {
 234                         /* controller version 1.6 or above */
 235                         clrbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
 236                         setbits32(non_ehci + FSL_SOC_USB_CTRL,
 237                                 ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
 238                 }
 239                 portsc |= PORT_PTS_ULPI;
 240                 break;
 241         case FSL_USB2_PHY_SERIAL:
 242                 portsc |= PORT_PTS_SERIAL;
 243                 break;
 244         case FSL_USB2_PHY_UTMI_WIDE:
 245                 portsc |= PORT_PTS_PTW;
 246                 /* fall through */
 247         case FSL_USB2_PHY_UTMI:
 248                 if (pdata->have_sysif_regs && pdata->controller_ver) {
 249                         /* controller version 1.6 or above */
 250                         setbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
 251                         mdelay(FSL_UTMI_PHY_DLY);  /* Delay for UTMI PHY CLK to
 252                                                 become stable - 10ms*/
 253                 }
 254                 /* enable UTMI PHY */
 255                 if (pdata->have_sysif_regs)
 256                         setbits32(non_ehci + FSL_SOC_USB_CTRL,
 257                                   CTRL_UTMI_PHY_EN);
 258                 portsc |= PORT_PTS_UTMI;
 259                 break;
 260         case FSL_USB2_PHY_NONE:
 261                 break;
 262         }
 263
 264         if (pdata->have_sysif_regs && pdata->controller_ver &&
 265             (phy_mode == FSL_USB2_PHY_ULPI)) {
 266                 /* check PHY_CLK_VALID to get phy clk valid */
 267                 if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) &
 268                                 PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) ||
 269                                 in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) {
 270                         printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n");
 271                         return -EINVAL;
 272                 }
 273         }
 274
 275         ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
 276
 277         if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs)
 278                 setbits32(non_ehci + FSL_SOC_USB_CTRL, USB_CTRL_USB_EN);
 279
 280         return 0;
 281 }
 282
 283 static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 284 {
 285         struct usb_hcd *hcd = ehci_to_hcd(ehci);
 286         struct fsl_usb2_platform_data *pdata;
 287         void __iomem *non_ehci = hcd->regs;
 288
 289         pdata = dev_get_platdata(hcd->self.controller);
 290
 291         if (pdata->have_sysif_regs) {
 292                 /*
 293                 * Turn on cache snooping hardware, since some PowerPC platforms
 294                 * wholly rely on hardware to deal with cache coherent
 295                 */
 296
 297                 /* Setup Snooping for all the 4GB space */
 298                 /* SNOOP1 starts from 0x0, size 2G */
 299                 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
 300                 /* SNOOP2 starts from 0x80000000, size 2G */
 301                 out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
 302         }
 303
 304         if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
 305                         (pdata->operating_mode == FSL_USB2_DR_OTG))
 306                 if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
 307                         return -EINVAL;
 308
 309         if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
 310                 unsigned int chip, rev, svr;
 311
 312                 svr = mfspr(SPRN_SVR);
 313                 chip = svr >> 16;
 314                 rev = (svr >> 4) & 0xf;
 315
 316                 /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
 317                 if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
 318                         ehci->has_fsl_port_bug = 1;
 319
 320                 if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
 321                         if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
 322                                 return -EINVAL;
 323
 324                 if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
 325                         if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1))
 326                                 return -EINVAL;
 327         }
 328
 329         if (pdata->have_sysif_regs) {
 330 #ifdef CONFIG_FSL_SOC_BOOKE
 331                 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
 332                 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
 333 #else
 334                 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
 335                 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
 336 #endif
 337                 out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
 338         }
 339
 340         return 0;
 341 }
 342
 343 /* called after powerup, by probe or system-pm "wakeup" */
 344 static int ehci_fsl_reinit(struct ehci_hcd *ehci)
 345 {
 346         if (ehci_fsl_usb_setup(ehci))
 347                 return -EINVAL;
 348
 349         return 0;
 350 }
 351
 352 /* called during probe() after chip reset completes */
 353 static int ehci_fsl_setup(struct usb_hcd *hcd)
 354 {
 355         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 356         int retval;
 357         struct fsl_usb2_platform_data *pdata;
 358         struct device *dev;
 359
 360         dev = hcd->self.controller;
 361         pdata = dev_get_platdata(hcd->self.controller);
 362         ehci->big_endian_desc = pdata->big_endian_desc;
 363         ehci->big_endian_mmio = pdata->big_endian_mmio;
 364
 365         /* EHCI registers start at offset 0x100 */
 366         ehci->caps = hcd->regs + 0x100;
 367
 368 #ifdef CONFIG_PPC_83xx
 369         /*
 370          * Deal with MPC834X that need port power to be cycled after the power
 371          * fault condition is removed. Otherwise the state machine does not
 372          * reflect PORTSC[CSC] correctly.
 373          */
 374         ehci->need_oc_pp_cycle = 1;
 375 #endif
 376
 377         hcd->has_tt = 1;
 378
 379         retval = ehci_setup(hcd);
 380         if (retval)
 381                 return retval;
 382
 383         if (of_device_is_compatible(dev->parent->of_node,
 384                                     "fsl,mpc5121-usb2-dr")) {
 385                 /*
 386                  * set SBUSCFG:AHBBRST so that control msgs don't
 387                  * fail when doing heavy PATA writes.
 388                  */
 389                 ehci_writel(ehci, SBUSCFG_INCR8,
 390                             hcd->regs + FSL_SOC_USB_SBUSCFG);
 391         }
 392
 393         retval = ehci_fsl_reinit(ehci);
 394         return retval;
 395 }
 396
 397 struct ehci_fsl {
 398         struct ehci_hcd ehci;
 399
 400 #ifdef CONFIG_PM
 401         /* Saved USB PHY settings, need to restore after deep sleep. */
 402         u32 usb_ctrl;
 403 #endif
 404 };
 405
 406 #ifdef CONFIG_PM
 407
 408 #ifdef CONFIG_PPC_MPC512x
 409 static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 410 {
 411         struct usb_hcd *hcd = dev_get_drvdata(dev);
 412         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 413         struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
 414         u32 tmp;
 415
 416 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 417         u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);
 418         mode &= USBMODE_CM_MASK;
 419         tmp = ehci_readl(ehci, hcd->regs + 0x140);      /* usbcmd */
 420
 421         dev_dbg(dev, "suspend=%d already_suspended=%d "
 422                 "mode=%d  usbcmd %08x\n", pdata->suspended,
 423                 pdata->already_suspended, mode, tmp);
 424 #endif
 425
 426         /*
 427          * If the controller is already suspended, then this must be a
 428          * PM suspend.  Remember this fact, so that we will leave the
 429          * controller suspended at PM resume time.
 430          */
 431         if (pdata->suspended) {
 432                 dev_dbg(dev, "already suspended, leaving early\n");
 433                 pdata->already_suspended = 1;
 434                 return 0;
 435         }
 436
 437         dev_dbg(dev, "suspending...\n");
 438
 439         ehci->rh_state = EHCI_RH_SUSPENDED;
 440         dev->power.power_state = PMSG_SUSPEND;
 441
 442         /* ignore non-host interrupts */
 443         clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 444
 445         /* stop the controller */
 446         tmp = ehci_readl(ehci, &ehci->regs->command);
 447         tmp &= ~CMD_RUN;
 448         ehci_writel(ehci, tmp, &ehci->regs->command);
 449
 450         /* save EHCI registers */
 451         pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);
 452         pdata->pm_command &= ~CMD_RUN;
 453         pdata->pm_status  = ehci_readl(ehci, &ehci->regs->status);
 454         pdata->pm_intr_enable  = ehci_readl(ehci, &ehci->regs->intr_enable);
 455         pdata->pm_frame_index  = ehci_readl(ehci, &ehci->regs->frame_index);
 456         pdata->pm_segment  = ehci_readl(ehci, &ehci->regs->segment);
 457         pdata->pm_frame_list  = ehci_readl(ehci, &ehci->regs->frame_list);
 458         pdata->pm_async_next  = ehci_readl(ehci, &ehci->regs->async_next);
 459         pdata->pm_configured_flag  =
 460                 ehci_readl(ehci, &ehci->regs->configured_flag);
 461         pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);
 462         pdata->pm_usbgenctrl = ehci_readl(ehci,
 463                                           hcd->regs + FSL_SOC_USB_USBGENCTRL);
 464
 465         /* clear the W1C bits */
 466         pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);
 467
 468         pdata->suspended = 1;
 469
 470         /* clear PP to cut power to the port */
 471         tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);
 472         tmp &= ~PORT_POWER;
 473         ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);
 474
 475         return 0;
 476 }
 477
 478 static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 479 {
 480         struct usb_hcd *hcd = dev_get_drvdata(dev);
 481         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 482         struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
 483         u32 tmp;
 484
 485         dev_dbg(dev, "suspend=%d already_suspended=%d\n",
 486                 pdata->suspended, pdata->already_suspended);
 487
 488         /*
 489          * If the controller was already suspended at suspend time,
 490          * then don't resume it now.
 491          */
 492         if (pdata->already_suspended) {
 493                 dev_dbg(dev, "already suspended, leaving early\n");
 494                 pdata->already_suspended = 0;
 495                 return 0;
 496         }
 497
 498         if (!pdata->suspended) {
 499                 dev_dbg(dev, "not suspended, leaving early\n");
 500                 return 0;
 501         }
 502
 503         pdata->suspended = 0;
 504
 505         dev_dbg(dev, "resuming...\n");
 506
 507         /* set host mode */
 508         tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);
 509         ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);
 510
 511         ehci_writel(ehci, pdata->pm_usbgenctrl,
 512                     hcd->regs + FSL_SOC_USB_USBGENCTRL);
 513         ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
 514                     hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
 515
 516         ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
 517
 518         /* restore EHCI registers */
 519         ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
 520         ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);
 521         ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);
 522         ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);
 523         ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);
 524         ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);
 525         ehci_writel(ehci, pdata->pm_configured_flag,
 526                     &ehci->regs->configured_flag);
 527         ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
 528
 529         set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 530         ehci->rh_state = EHCI_RH_RUNNING;
 531         dev->power.power_state = PMSG_ON;
 532
 533         tmp = ehci_readl(ehci, &ehci->regs->command);
 534         tmp |= CMD_RUN;
 535         ehci_writel(ehci, tmp, &ehci->regs->command);
 536
 537         usb_hcd_resume_root_hub(hcd);
 538
 539         return 0;
 540 }
 541 #else
 542 static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 543 {
 544         return 0;
 545 }
 546
 547 static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 548 {
 549         return 0;
 550 }
 551 #endif /* CONFIG_PPC_MPC512x */
 552
 553 static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
 554 {
 555         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 556
 557         return container_of(ehci, struct ehci_fsl, ehci);
 558 }
 559
 560 static int ehci_fsl_drv_suspend(struct device *dev)
 561 {
 562         struct usb_hcd *hcd = dev_get_drvdata(dev);
 563         struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 564         void __iomem *non_ehci = hcd->regs;
 565
 566         if (of_device_is_compatible(dev->parent->of_node,
 567                                     "fsl,mpc5121-usb2-dr")) {
 568                 return ehci_fsl_mpc512x_drv_suspend(dev);
 569         }
 570
 571         ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
 572                         device_may_wakeup(dev));
 573         if (!fsl_deep_sleep())
 574                 return 0;
 575
 576         ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 577         return 0;
 578 }
 579
 580 static int ehci_fsl_drv_resume(struct device *dev)
 581 {
 582         struct usb_hcd *hcd = dev_get_drvdata(dev);
 583         struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 584         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 585         void __iomem *non_ehci = hcd->regs;
 586
 587         if (of_device_is_compatible(dev->parent->of_node,
 588                                     "fsl,mpc5121-usb2-dr")) {
 589                 return ehci_fsl_mpc512x_drv_resume(dev);
 590         }
 591
 592         ehci_prepare_ports_for_controller_resume(ehci);
 593         if (!fsl_deep_sleep())
 594                 return 0;
 595
 596         usb_root_hub_lost_power(hcd->self.root_hub);
 597
 598         /* Restore USB PHY settings and enable the controller. */
 599         out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
 600
 601         ehci_reset(ehci);
 602         ehci_fsl_reinit(ehci);
 603
 604         return 0;
 605 }
 606
 607 static int ehci_fsl_drv_restore(struct device *dev)
 608 {
 609         struct usb_hcd *hcd = dev_get_drvdata(dev);
 610
 611         usb_root_hub_lost_power(hcd->self.root_hub);
 612         return 0;
 613 }
 614
 615 static struct dev_pm_ops ehci_fsl_pm_ops = {
 616         .suspend = ehci_fsl_drv_suspend,
 617         .resume = ehci_fsl_drv_resume,
 618         .restore = ehci_fsl_drv_restore,
 619 };
 620
 621 #define EHCI_FSL_PM_OPS         (&ehci_fsl_pm_ops)
 622 #else
 623 #define EHCI_FSL_PM_OPS         NULL
 624 #endif /* CONFIG_PM */
 625
 626 #ifdef CONFIG_USB_OTG
 627 static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
 628 {
 629         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 630         u32 status;
 631
 632         if (!port)
 633                 return -EINVAL;
 634
 635         port--;
 636
 637         /* start port reset before HNP protocol time out */
 638         status = readl(&ehci->regs->port_status[port]);
 639         if (!(status & PORT_CONNECT))
 640                 return -ENODEV;
 641
 642         /* khubd will finish the reset later */
 643         if (ehci_is_TDI(ehci)) {
 644                 writel(PORT_RESET |
 645                        (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)),
 646                        &ehci->regs->port_status[port]);
 647         } else {
 648                 writel(PORT_RESET, &ehci->regs->port_status[port]);
 649         }
 650
 651         return 0;
 652 }
 653 #else
 654 #define ehci_start_port_reset   NULL
 655 #endif /* CONFIG_USB_OTG */
 656
 657
 658 static const struct hc_driver ehci_fsl_hc_driver = {
 659         .description = hcd_name,
 660         .product_desc = "Freescale On-Chip EHCI Host Controller",
 661         .hcd_priv_size = sizeof(struct ehci_fsl),
 662
 663         /*
 664          * generic hardware linkage
 665          */
 666         .irq = ehci_irq,
 667         .flags = HCD_USB2 | HCD_MEMORY | HCD_BH,
 668
 669         /*
 670          * basic lifecycle operations
 671          */
 672         .reset = ehci_fsl_setup,
 673         .start = ehci_run,
 674         .stop = ehci_stop,
 675         .shutdown = ehci_shutdown,
 676
 677         /*
 678          * managing i/o requests and associated device resources
 679          */
 680         .urb_enqueue = ehci_urb_enqueue,
 681         .urb_dequeue = ehci_urb_dequeue,
 682         .endpoint_disable = ehci_endpoint_disable,
 683         .endpoint_reset = ehci_endpoint_reset,
 684
 685         /*
 686          * scheduling support
 687          */
 688         .get_frame_number = ehci_get_frame,
 689
 690         /*
 691          * root hub support
 692          */
 693         .hub_status_data = ehci_hub_status_data,
 694         .hub_control = ehci_hub_control,
 695         .bus_suspend = ehci_bus_suspend,
 696         .bus_resume = ehci_bus_resume,
 697         .start_port_reset = ehci_start_port_reset,
 698         .relinquish_port = ehci_relinquish_port,
 699         .port_handed_over = ehci_port_handed_over,
 700
 701         .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 702 };
 703
 704 static int ehci_fsl_drv_probe(struct platform_device *pdev)
 705 {
 706         if (usb_disabled())
 707                 return -ENODEV;
 708
 709         /* FIXME we only want one one probe() not two */
 710         return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
 711 }
 712
 713 static int ehci_fsl_drv_remove(struct platform_device *pdev)
 714 {
 715         struct usb_hcd *hcd = platform_get_drvdata(pdev);
 716
 717         /* FIXME we only want one one remove() not two */
 718         usb_hcd_fsl_remove(hcd, pdev);
 719         return 0;
 720 }
 721
 722 MODULE_ALIAS("platform:fsl-ehci");
 723
 724 static struct platform_driver ehci_fsl_driver = {
 725         .probe = ehci_fsl_drv_probe,
 726         .remove = ehci_fsl_drv_remove,
 727         .shutdown = usb_hcd_platform_shutdown,
 728         .driver = {
 729                 .name = "fsl-ehci",
 730                 .owner  = THIS_MODULE,
 731                 .pm = EHCI_FSL_PM_OPS,
 732         },
 733 };