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/platform_device.h>
  31 #include <linux/fsl_devices.h>
  32
  33 #include "ehci-fsl.h"
  34
  35 /* configure so an HC device and id are always provided */
  36 /* always called with process context; sleeping is OK */
  37
  38 /**
  39  * usb_hcd_fsl_probe - initialize FSL-based HCDs
  40  * @drvier: Driver to be used for this HCD
  41  * @pdev: USB Host Controller being probed
  42  * Context: !in_interrupt()
  43  *
  44  * Allocates basic resources for this USB host controller.
  45  *
  46  */
  47 static int usb_hcd_fsl_probe(const struct hc_driver *driver,
  48                              struct platform_device *pdev)
  49 {
  50         struct fsl_usb2_platform_data *pdata;
  51         struct usb_hcd *hcd;
  52         struct resource *res;
  53         int irq;
  54         int retval;
  55
  56         pr_debug("initializing FSL-SOC USB Controller\n");
  57
  58         /* Need platform data for setup */
  59         pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
  60         if (!pdata) {
  61                 dev_err(&pdev->dev,
  62                         "No platform data for %s.\n", dev_name(&pdev->dev));
  63                 return -ENODEV;
  64         }
  65
  66         /*
  67          * This is a host mode driver, verify that we're supposed to be
  68          * in host mode.
  69          */
  70         if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
  71               (pdata->operating_mode == FSL_USB2_MPH_HOST) ||
  72               (pdata->operating_mode == FSL_USB2_DR_OTG))) {
  73                 dev_err(&pdev->dev,
  74                         "Non Host Mode configured for %s. Wrong driver linked.\n",
  75                         dev_name(&pdev->dev));
  76                 return -ENODEV;
  77         }
  78
  79         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
  80         if (!res) {
  81                 dev_err(&pdev->dev,
  82                         "Found HC with no IRQ. Check %s setup!\n",
  83                         dev_name(&pdev->dev));
  84                 return -ENODEV;
  85         }
  86         irq = res->start;
  87
  88         hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
  89         if (!hcd) {
  90                 retval = -ENOMEM;
  91                 goto err1;
  92         }
  93
  94         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  95         if (!res) {
  96                 dev_err(&pdev->dev,
  97                         "Found HC with no register addr. Check %s setup!\n",
  98                         dev_name(&pdev->dev));
  99                 retval = -ENODEV;
 100                 goto err2;
 101         }
 102         hcd->rsrc_start = res->start;
 103         hcd->rsrc_len = resource_size(res);
 104         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
 105                                 driver->description)) {
 106                 dev_dbg(&pdev->dev, "controller already in use\n");
 107                 retval = -EBUSY;
 108                 goto err2;
 109         }
 110         hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 111
 112         if (hcd->regs == NULL) {
 113                 dev_dbg(&pdev->dev, "error mapping memory\n");
 114                 retval = -EFAULT;
 115                 goto err3;
 116         }
 117
 118         pdata->regs = hcd->regs;
 119
 120         if (pdata->power_budget)
 121                 hcd->power_budget = pdata->power_budget;
 122
 123         /*
 124          * do platform specific init: check the clock, grab/config pins, etc.
 125          */
 126         if (pdata->init && pdata->init(pdev)) {
 127                 retval = -ENODEV;
 128                 goto err4;
 129         }
 130
 131         /* Enable USB controller, 83xx or 8536 */
 132         if (pdata->have_sysif_regs)
 133                 setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4);
 134
 135         /* Don't need to set host mode here. It will be done by tdi_reset() */
 136
 137         retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
 138         if (retval != 0)
 139                 goto err4;
 140
 141 #ifdef CONFIG_USB_OTG
 142         if (pdata->operating_mode == FSL_USB2_DR_OTG) {
 143                 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 144
 145                 hcd->phy = usb_get_transceiver();
 146                 dev_dbg(&pdev->dev, "hcd=0x%p  ehci=0x%p, phy=0x%p\n",
 147                         hcd, ehci, hcd->phy);
 148
 149                 if (hcd->phy) {
 150                         retval = otg_set_host(hcd->phy->otg,
 151                                               &ehci_to_hcd(ehci)->self);
 152                         if (retval) {
 153                                 usb_put_transceiver(hcd->phy);
 154                                 goto err4;
 155                         }
 156                 } else {
 157                         dev_err(&pdev->dev, "can't find phy\n");
 158                         retval = -ENODEV;
 159                         goto err4;
 160                 }
 161         }
 162 #endif
 163         return retval;
 164
 165       err4:
 166         iounmap(hcd->regs);
 167       err3:
 168         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 169       err2:
 170         usb_put_hcd(hcd);
 171       err1:
 172         dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
 173         if (pdata->exit)
 174                 pdata->exit(pdev);
 175         return retval;
 176 }
 177
 178 /* may be called without controller electrically present */
 179 /* may be called with controller, bus, and devices active */
 180
 181 /**
 182  * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
 183  * @dev: USB Host Controller being removed
 184  * Context: !in_interrupt()
 185  *
 186  * Reverses the effect of usb_hcd_fsl_probe().
 187  *
 188  */
 189 static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
 190                                struct platform_device *pdev)
 191 {
 192         struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
 193
 194         if (hcd->phy) {
 195                 otg_set_host(hcd->phy->otg, NULL);
 196                 usb_put_transceiver(hcd->phy);
 197         }
 198
 199         usb_remove_hcd(hcd);
 200
 201         /*
 202          * do platform specific un-initialization:
 203          * release iomux pins, disable clock, etc.
 204          */
 205         if (pdata->exit)
 206                 pdata->exit(pdev);
 207         iounmap(hcd->regs);
 208         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 209         usb_put_hcd(hcd);
 210 }
 211
 212 static void ehci_fsl_setup_phy(struct usb_hcd *hcd,
 213                                enum fsl_usb2_phy_modes phy_mode,
 214                                unsigned int port_offset)
 215 {
 216         u32 portsc, temp;
 217         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 218         void __iomem *non_ehci = hcd->regs;
 219         struct device *dev = hcd->self.controller;
 220         struct fsl_usb2_platform_data *pdata = dev->platform_data;
 221
 222         if (pdata->controller_ver < 0) {
 223                 dev_warn(hcd->self.controller, "Could not get controller version\n");
 224                 return;
 225         }
 226
 227         portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);
 228         portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
 229
 230         switch (phy_mode) {
 231         case FSL_USB2_PHY_ULPI:
 232                 if (pdata->controller_ver) {
 233                         /* controller version 1.6 or above */
 234                         temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 235                         out_be32(non_ehci + FSL_SOC_USB_CTRL, temp |
 236                                 USB_CTRL_USB_EN | ULPI_PHY_CLK_SEL);
 237                 }
 238                 portsc |= PORT_PTS_ULPI;
 239                 break;
 240         case FSL_USB2_PHY_SERIAL:
 241                 portsc |= PORT_PTS_SERIAL;
 242                 break;
 243         case FSL_USB2_PHY_UTMI_WIDE:
 244                 portsc |= PORT_PTS_PTW;
 245                 /* fall through */
 246         case FSL_USB2_PHY_UTMI:
 247                 if (pdata->controller_ver) {
 248                         /* controller version 1.6 or above */
 249                         temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 250                         out_be32(non_ehci + FSL_SOC_USB_CTRL, temp |
 251                                 UTMI_PHY_EN | USB_CTRL_USB_EN);
 252                         mdelay(FSL_UTMI_PHY_DLY);  /* Delay for UTMI PHY CLK to
 253                                                 become stable - 10ms*/
 254                 }
 255                 /* enable UTMI PHY */
 256                 if (pdata->have_sysif_regs)
 257                         setbits32(non_ehci + FSL_SOC_USB_CTRL,
 258                                   CTRL_UTMI_PHY_EN);
 259                 portsc |= PORT_PTS_UTMI;
 260                 break;
 261         case FSL_USB2_PHY_NONE:
 262                 break;
 263         }
 264         ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
 265 }
 266
 267 static void ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 268 {
 269         struct usb_hcd *hcd = ehci_to_hcd(ehci);
 270         struct fsl_usb2_platform_data *pdata;
 271         void __iomem *non_ehci = hcd->regs;
 272         u32 temp;
 273
 274         pdata = hcd->self.controller->platform_data;
 275
 276         /* Enable PHY interface in the control reg. */
 277         if (pdata->have_sysif_regs) {
 278                 temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 279                 out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);
 280
 281                 /*
 282                 * Turn on cache snooping hardware, since some PowerPC platforms
 283                 * wholly rely on hardware to deal with cache coherent
 284                 */
 285
 286                 /* Setup Snooping for all the 4GB space */
 287                 /* SNOOP1 starts from 0x0, size 2G */
 288                 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
 289                 /* SNOOP2 starts from 0x80000000, size 2G */
 290                 out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
 291         }
 292
 293         if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
 294                         (pdata->operating_mode == FSL_USB2_DR_OTG))
 295                 ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0);
 296
 297         if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
 298                 unsigned int chip, rev, svr;
 299
 300                 svr = mfspr(SPRN_SVR);
 301                 chip = svr >> 16;
 302                 rev = (svr >> 4) & 0xf;
 303
 304                 /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
 305                 if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
 306                         ehci->has_fsl_port_bug = 1;
 307
 308                 if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
 309                         ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0);
 310                 if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
 311                         ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1);
 312         }
 313
 314         if (pdata->have_sysif_regs) {
 315 #ifdef CONFIG_PPC_85xx
 316                 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
 317                 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
 318 #else
 319                 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
 320                 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
 321 #endif
 322                 out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
 323         }
 324 }
 325
 326 /* called after powerup, by probe or system-pm "wakeup" */
 327 static int ehci_fsl_reinit(struct ehci_hcd *ehci)
 328 {
 329         ehci_fsl_usb_setup(ehci);
 330         ehci_port_power(ehci, 0);
 331
 332         return 0;
 333 }
 334
 335 /* called during probe() after chip reset completes */
 336 static int ehci_fsl_setup(struct usb_hcd *hcd)
 337 {
 338         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 339         int retval;
 340         struct fsl_usb2_platform_data *pdata;
 341         struct device *dev;
 342
 343         dev = hcd->self.controller;
 344         pdata = hcd->self.controller->platform_data;
 345         ehci->big_endian_desc = pdata->big_endian_desc;
 346         ehci->big_endian_mmio = pdata->big_endian_mmio;
 347
 348         /* EHCI registers start at offset 0x100 */
 349         ehci->caps = hcd->regs + 0x100;
 350         ehci->regs = hcd->regs + 0x100 +
 351                 HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 352         dbg_hcs_params(ehci, "reset");
 353         dbg_hcc_params(ehci, "reset");
 354
 355         /* cache this readonly data; minimize chip reads */
 356         ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 357
 358         hcd->has_tt = 1;
 359
 360         retval = ehci_halt(ehci);
 361         if (retval)
 362                 return retval;
 363
 364         /* data structure init */
 365         retval = ehci_init(hcd);
 366         if (retval)
 367                 return retval;
 368
 369         ehci->sbrn = 0x20;
 370
 371         ehci_reset(ehci);
 372
 373         if (of_device_is_compatible(dev->parent->of_node,
 374                                     "fsl,mpc5121-usb2-dr")) {
 375                 /*
 376                  * set SBUSCFG:AHBBRST so that control msgs don't
 377                  * fail when doing heavy PATA writes.
 378                  */
 379                 ehci_writel(ehci, SBUSCFG_INCR8,
 380                             hcd->regs + FSL_SOC_USB_SBUSCFG);
 381         }
 382
 383         retval = ehci_fsl_reinit(ehci);
 384         return retval;
 385 }
 386
 387 struct ehci_fsl {
 388         struct ehci_hcd ehci;
 389
 390 #ifdef CONFIG_PM
 391         /* Saved USB PHY settings, need to restore after deep sleep. */
 392         u32 usb_ctrl;
 393 #endif
 394 };
 395
 396 #ifdef CONFIG_PM
 397
 398 #ifdef CONFIG_PPC_MPC512x
 399 static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 400 {
 401         struct usb_hcd *hcd = dev_get_drvdata(dev);
 402         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 403         struct fsl_usb2_platform_data *pdata = dev->platform_data;
 404         u32 tmp;
 405
 406 #ifdef DEBUG
 407         u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);
 408         mode &= USBMODE_CM_MASK;
 409         tmp = ehci_readl(ehci, hcd->regs + 0x140);      /* usbcmd */
 410
 411         dev_dbg(dev, "suspend=%d already_suspended=%d "
 412                 "mode=%d  usbcmd %08x\n", pdata->suspended,
 413                 pdata->already_suspended, mode, tmp);
 414 #endif
 415
 416         /*
 417          * If the controller is already suspended, then this must be a
 418          * PM suspend.  Remember this fact, so that we will leave the
 419          * controller suspended at PM resume time.
 420          */
 421         if (pdata->suspended) {
 422                 dev_dbg(dev, "already suspended, leaving early\n");
 423                 pdata->already_suspended = 1;
 424                 return 0;
 425         }
 426
 427         dev_dbg(dev, "suspending...\n");
 428
 429         ehci->rh_state = EHCI_RH_SUSPENDED;
 430         dev->power.power_state = PMSG_SUSPEND;
 431
 432         /* ignore non-host interrupts */
 433         clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 434
 435         /* stop the controller */
 436         tmp = ehci_readl(ehci, &ehci->regs->command);
 437         tmp &= ~CMD_RUN;
 438         ehci_writel(ehci, tmp, &ehci->regs->command);
 439
 440         /* save EHCI registers */
 441         pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);
 442         pdata->pm_command &= ~CMD_RUN;
 443         pdata->pm_status  = ehci_readl(ehci, &ehci->regs->status);
 444         pdata->pm_intr_enable  = ehci_readl(ehci, &ehci->regs->intr_enable);
 445         pdata->pm_frame_index  = ehci_readl(ehci, &ehci->regs->frame_index);
 446         pdata->pm_segment  = ehci_readl(ehci, &ehci->regs->segment);
 447         pdata->pm_frame_list  = ehci_readl(ehci, &ehci->regs->frame_list);
 448         pdata->pm_async_next  = ehci_readl(ehci, &ehci->regs->async_next);
 449         pdata->pm_configured_flag  =
 450                 ehci_readl(ehci, &ehci->regs->configured_flag);
 451         pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);
 452         pdata->pm_usbgenctrl = ehci_readl(ehci,
 453                                           hcd->regs + FSL_SOC_USB_USBGENCTRL);
 454
 455         /* clear the W1C bits */
 456         pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);
 457
 458         pdata->suspended = 1;
 459
 460         /* clear PP to cut power to the port */
 461         tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);
 462         tmp &= ~PORT_POWER;
 463         ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);
 464
 465         return 0;
 466 }
 467
 468 static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 469 {
 470         struct usb_hcd *hcd = dev_get_drvdata(dev);
 471         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 472         struct fsl_usb2_platform_data *pdata = dev->platform_data;
 473         u32 tmp;
 474
 475         dev_dbg(dev, "suspend=%d already_suspended=%d\n",
 476                 pdata->suspended, pdata->already_suspended);
 477
 478         /*
 479          * If the controller was already suspended at suspend time,
 480          * then don't resume it now.
 481          */
 482         if (pdata->already_suspended) {
 483                 dev_dbg(dev, "already suspended, leaving early\n");
 484                 pdata->already_suspended = 0;
 485                 return 0;
 486         }
 487
 488         if (!pdata->suspended) {
 489                 dev_dbg(dev, "not suspended, leaving early\n");
 490                 return 0;
 491         }
 492
 493         pdata->suspended = 0;
 494
 495         dev_dbg(dev, "resuming...\n");
 496
 497         /* set host mode */
 498         tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);
 499         ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);
 500
 501         ehci_writel(ehci, pdata->pm_usbgenctrl,
 502                     hcd->regs + FSL_SOC_USB_USBGENCTRL);
 503         ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
 504                     hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
 505
 506         ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
 507
 508         /* restore EHCI registers */
 509         ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
 510         ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);
 511         ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);
 512         ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);
 513         ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);
 514         ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);
 515         ehci_writel(ehci, pdata->pm_configured_flag,
 516                     &ehci->regs->configured_flag);
 517         ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
 518
 519         set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 520         ehci->rh_state = EHCI_RH_RUNNING;
 521         dev->power.power_state = PMSG_ON;
 522
 523         tmp = ehci_readl(ehci, &ehci->regs->command);
 524         tmp |= CMD_RUN;
 525         ehci_writel(ehci, tmp, &ehci->regs->command);
 526
 527         usb_hcd_resume_root_hub(hcd);
 528
 529         return 0;
 530 }
 531 #else
 532 static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 533 {
 534         return 0;
 535 }
 536
 537 static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 538 {
 539         return 0;
 540 }
 541 #endif /* CONFIG_PPC_MPC512x */
 542
 543 static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
 544 {
 545         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 546
 547         return container_of(ehci, struct ehci_fsl, ehci);
 548 }
 549
 550 static int ehci_fsl_drv_suspend(struct device *dev)
 551 {
 552         struct usb_hcd *hcd = dev_get_drvdata(dev);
 553         struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 554         void __iomem *non_ehci = hcd->regs;
 555
 556         if (of_device_is_compatible(dev->parent->of_node,
 557                                     "fsl,mpc5121-usb2-dr")) {
 558                 return ehci_fsl_mpc512x_drv_suspend(dev);
 559         }
 560
 561         ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
 562                         device_may_wakeup(dev));
 563         if (!fsl_deep_sleep())
 564                 return 0;
 565
 566         ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 567         return 0;
 568 }
 569
 570 static int ehci_fsl_drv_resume(struct device *dev)
 571 {
 572         struct usb_hcd *hcd = dev_get_drvdata(dev);
 573         struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 574         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 575         void __iomem *non_ehci = hcd->regs;
 576
 577         if (of_device_is_compatible(dev->parent->of_node,
 578                                     "fsl,mpc5121-usb2-dr")) {
 579                 return ehci_fsl_mpc512x_drv_resume(dev);
 580         }
 581
 582         ehci_prepare_ports_for_controller_resume(ehci);
 583         if (!fsl_deep_sleep())
 584                 return 0;
 585
 586         usb_root_hub_lost_power(hcd->self.root_hub);
 587
 588         /* Restore USB PHY settings and enable the controller. */
 589         out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
 590
 591         ehci_reset(ehci);
 592         ehci_fsl_reinit(ehci);
 593
 594         return 0;
 595 }
 596
 597 static int ehci_fsl_drv_restore(struct device *dev)
 598 {
 599         struct usb_hcd *hcd = dev_get_drvdata(dev);
 600
 601         usb_root_hub_lost_power(hcd->self.root_hub);
 602         return 0;
 603 }
 604
 605 static struct dev_pm_ops ehci_fsl_pm_ops = {
 606         .suspend = ehci_fsl_drv_suspend,
 607         .resume = ehci_fsl_drv_resume,
 608         .restore = ehci_fsl_drv_restore,
 609 };
 610
 611 #define EHCI_FSL_PM_OPS         (&ehci_fsl_pm_ops)
 612 #else
 613 #define EHCI_FSL_PM_OPS         NULL
 614 #endif /* CONFIG_PM */
 615
 616 #ifdef CONFIG_USB_OTG
 617 static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
 618 {
 619         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 620         u32 status;
 621
 622         if (!port)
 623                 return -EINVAL;
 624
 625         port--;
 626
 627         /* start port reset before HNP protocol time out */
 628         status = readl(&ehci->regs->port_status[port]);
 629         if (!(status & PORT_CONNECT))
 630                 return -ENODEV;
 631
 632         /* khubd will finish the reset later */
 633         if (ehci_is_TDI(ehci)) {
 634                 writel(PORT_RESET |
 635                        (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)),
 636                        &ehci->regs->port_status[port]);
 637         } else {
 638                 writel(PORT_RESET, &ehci->regs->port_status[port]);
 639         }
 640
 641         return 0;
 642 }
 643 #else
 644 #define ehci_start_port_reset   NULL
 645 #endif /* CONFIG_USB_OTG */
 646
 647
 648 static const struct hc_driver ehci_fsl_hc_driver = {
 649         .description = hcd_name,
 650         .product_desc = "Freescale On-Chip EHCI Host Controller",
 651         .hcd_priv_size = sizeof(struct ehci_fsl),
 652
 653         /*
 654          * generic hardware linkage
 655          */
 656         .irq = ehci_irq,
 657         .flags = HCD_USB2 | HCD_MEMORY,
 658
 659         /*
 660          * basic lifecycle operations
 661          */
 662         .reset = ehci_fsl_setup,
 663         .start = ehci_run,
 664         .stop = ehci_stop,
 665         .shutdown = ehci_shutdown,
 666
 667         /*
 668          * managing i/o requests and associated device resources
 669          */
 670         .urb_enqueue = ehci_urb_enqueue,
 671         .urb_dequeue = ehci_urb_dequeue,
 672         .endpoint_disable = ehci_endpoint_disable,
 673         .endpoint_reset = ehci_endpoint_reset,
 674
 675         /*
 676          * scheduling support
 677          */
 678         .get_frame_number = ehci_get_frame,
 679
 680         /*
 681          * root hub support
 682          */
 683         .hub_status_data = ehci_hub_status_data,
 684         .hub_control = ehci_hub_control,
 685         .bus_suspend = ehci_bus_suspend,
 686         .bus_resume = ehci_bus_resume,
 687         .start_port_reset = ehci_start_port_reset,
 688         .relinquish_port = ehci_relinquish_port,
 689         .port_handed_over = ehci_port_handed_over,
 690
 691         .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 692 };
 693
 694 static int ehci_fsl_drv_probe(struct platform_device *pdev)
 695 {
 696         if (usb_disabled())
 697                 return -ENODEV;
 698
 699         /* FIXME we only want one one probe() not two */
 700         return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
 701 }
 702
 703 static int ehci_fsl_drv_remove(struct platform_device *pdev)
 704 {
 705         struct usb_hcd *hcd = platform_get_drvdata(pdev);
 706
 707         /* FIXME we only want one one remove() not two */
 708         usb_hcd_fsl_remove(hcd, pdev);
 709         return 0;
 710 }
 711
 712 MODULE_ALIAS("platform:fsl-ehci");
 713
 714 static struct platform_driver ehci_fsl_driver = {
 715         .probe = ehci_fsl_drv_probe,
 716         .remove = ehci_fsl_drv_remove,
 717         .shutdown = usb_hcd_platform_shutdown,
 718         .driver = {
 719                 .name = "fsl-ehci",
 720                 .pm = EHCI_FSL_PM_OPS,
 721         },
 722 };