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 = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
  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)
 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 = pdev->dev.platform_data;
 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 void 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, temp;
 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->platform_data;
 222
 223         if (pdata->controller_ver < 0) {
 224                 dev_warn(hcd->self.controller, "Could not get controller version\n");
 225                 return;
 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->controller_ver) {
 234                         /* controller version 1.6 or above */
 235                         temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 236                         out_be32(non_ehci + FSL_SOC_USB_CTRL, temp |
 237                                 USB_CTRL_USB_EN | ULPI_PHY_CLK_SEL);
 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->controller_ver) {
 249                         /* controller version 1.6 or above */
 250                         temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 251                         out_be32(non_ehci + FSL_SOC_USB_CTRL, temp |
 252                                 UTMI_PHY_EN | USB_CTRL_USB_EN);
 253                         mdelay(FSL_UTMI_PHY_DLY);  /* Delay for UTMI PHY CLK to
 254                                                 become stable - 10ms*/
 255                 }
 256                 /* enable UTMI PHY */
 257                 if (pdata->have_sysif_regs)
 258                         setbits32(non_ehci + FSL_SOC_USB_CTRL,
 259                                   CTRL_UTMI_PHY_EN);
 260                 portsc |= PORT_PTS_UTMI;
 261                 break;
 262         case FSL_USB2_PHY_NONE:
 263                 break;
 264         }
 265         ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
 266 }
 267
 268 static void ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 269 {
 270         struct usb_hcd *hcd = ehci_to_hcd(ehci);
 271         struct fsl_usb2_platform_data *pdata;
 272         void __iomem *non_ehci = hcd->regs;
 273         u32 temp;
 274
 275         pdata = hcd->self.controller->platform_data;
 276
 277         /* Enable PHY interface in the control reg. */
 278         if (pdata->have_sysif_regs) {
 279                 temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 280                 out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);
 281
 282                 /*
 283                 * Turn on cache snooping hardware, since some PowerPC platforms
 284                 * wholly rely on hardware to deal with cache coherent
 285                 */
 286
 287                 /* Setup Snooping for all the 4GB space */
 288                 /* SNOOP1 starts from 0x0, size 2G */
 289                 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
 290                 /* SNOOP2 starts from 0x80000000, size 2G */
 291                 out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
 292         }
 293
 294         if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
 295                         (pdata->operating_mode == FSL_USB2_DR_OTG))
 296                 ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0);
 297
 298         if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
 299                 unsigned int chip, rev, svr;
 300
 301                 svr = mfspr(SPRN_SVR);
 302                 chip = svr >> 16;
 303                 rev = (svr >> 4) & 0xf;
 304
 305                 /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
 306                 if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
 307                         ehci->has_fsl_port_bug = 1;
 308
 309                 if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
 310                         ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0);
 311                 if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
 312                         ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1);
 313         }
 314
 315         if (pdata->have_sysif_regs) {
 316 #ifdef CONFIG_FSL_SOC_BOOKE
 317                 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
 318                 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
 319 #else
 320                 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
 321                 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
 322 #endif
 323                 out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
 324         }
 325 }
 326
 327 /* called after powerup, by probe or system-pm "wakeup" */
 328 static int ehci_fsl_reinit(struct ehci_hcd *ehci)
 329 {
 330         ehci_fsl_usb_setup(ehci);
 331         ehci_port_power(ehci, 0);
 332
 333         return 0;
 334 }
 335
 336 /* called during probe() after chip reset completes */
 337 static int ehci_fsl_setup(struct usb_hcd *hcd)
 338 {
 339         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 340         int retval;
 341         struct fsl_usb2_platform_data *pdata;
 342         struct device *dev;
 343
 344         dev = hcd->self.controller;
 345         pdata = hcd->self.controller->platform_data;
 346         ehci->big_endian_desc = pdata->big_endian_desc;
 347         ehci->big_endian_mmio = pdata->big_endian_mmio;
 348
 349         /* EHCI registers start at offset 0x100 */
 350         ehci->caps = hcd->regs + 0x100;
 351
 352         hcd->has_tt = 1;
 353
 354         retval = ehci_setup(hcd);
 355         if (retval)
 356                 return retval;
 357
 358         if (of_device_is_compatible(dev->parent->of_node,
 359                                     "fsl,mpc5121-usb2-dr")) {
 360                 /*
 361                  * set SBUSCFG:AHBBRST so that control msgs don't
 362                  * fail when doing heavy PATA writes.
 363                  */
 364                 ehci_writel(ehci, SBUSCFG_INCR8,
 365                             hcd->regs + FSL_SOC_USB_SBUSCFG);
 366         }
 367
 368         retval = ehci_fsl_reinit(ehci);
 369         return retval;
 370 }
 371
 372 struct ehci_fsl {
 373         struct ehci_hcd ehci;
 374
 375 #ifdef CONFIG_PM
 376         /* Saved USB PHY settings, need to restore after deep sleep. */
 377         u32 usb_ctrl;
 378 #endif
 379 };
 380
 381 #ifdef CONFIG_PM
 382
 383 #ifdef CONFIG_PPC_MPC512x
 384 static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 385 {
 386         struct usb_hcd *hcd = dev_get_drvdata(dev);
 387         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 388         struct fsl_usb2_platform_data *pdata = dev->platform_data;
 389         u32 tmp;
 390
 391 #ifdef DEBUG
 392         u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);
 393         mode &= USBMODE_CM_MASK;
 394         tmp = ehci_readl(ehci, hcd->regs + 0x140);      /* usbcmd */
 395
 396         dev_dbg(dev, "suspend=%d already_suspended=%d "
 397                 "mode=%d  usbcmd %08x\n", pdata->suspended,
 398                 pdata->already_suspended, mode, tmp);
 399 #endif
 400
 401         /*
 402          * If the controller is already suspended, then this must be a
 403          * PM suspend.  Remember this fact, so that we will leave the
 404          * controller suspended at PM resume time.
 405          */
 406         if (pdata->suspended) {
 407                 dev_dbg(dev, "already suspended, leaving early\n");
 408                 pdata->already_suspended = 1;
 409                 return 0;
 410         }
 411
 412         dev_dbg(dev, "suspending...\n");
 413
 414         ehci->rh_state = EHCI_RH_SUSPENDED;
 415         dev->power.power_state = PMSG_SUSPEND;
 416
 417         /* ignore non-host interrupts */
 418         clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 419
 420         /* stop the controller */
 421         tmp = ehci_readl(ehci, &ehci->regs->command);
 422         tmp &= ~CMD_RUN;
 423         ehci_writel(ehci, tmp, &ehci->regs->command);
 424
 425         /* save EHCI registers */
 426         pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);
 427         pdata->pm_command &= ~CMD_RUN;
 428         pdata->pm_status  = ehci_readl(ehci, &ehci->regs->status);
 429         pdata->pm_intr_enable  = ehci_readl(ehci, &ehci->regs->intr_enable);
 430         pdata->pm_frame_index  = ehci_readl(ehci, &ehci->regs->frame_index);
 431         pdata->pm_segment  = ehci_readl(ehci, &ehci->regs->segment);
 432         pdata->pm_frame_list  = ehci_readl(ehci, &ehci->regs->frame_list);
 433         pdata->pm_async_next  = ehci_readl(ehci, &ehci->regs->async_next);
 434         pdata->pm_configured_flag  =
 435                 ehci_readl(ehci, &ehci->regs->configured_flag);
 436         pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);
 437         pdata->pm_usbgenctrl = ehci_readl(ehci,
 438                                           hcd->regs + FSL_SOC_USB_USBGENCTRL);
 439
 440         /* clear the W1C bits */
 441         pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);
 442
 443         pdata->suspended = 1;
 444
 445         /* clear PP to cut power to the port */
 446         tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);
 447         tmp &= ~PORT_POWER;
 448         ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);
 449
 450         return 0;
 451 }
 452
 453 static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 454 {
 455         struct usb_hcd *hcd = dev_get_drvdata(dev);
 456         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 457         struct fsl_usb2_platform_data *pdata = dev->platform_data;
 458         u32 tmp;
 459
 460         dev_dbg(dev, "suspend=%d already_suspended=%d\n",
 461                 pdata->suspended, pdata->already_suspended);
 462
 463         /*
 464          * If the controller was already suspended at suspend time,
 465          * then don't resume it now.
 466          */
 467         if (pdata->already_suspended) {
 468                 dev_dbg(dev, "already suspended, leaving early\n");
 469                 pdata->already_suspended = 0;
 470                 return 0;
 471         }
 472
 473         if (!pdata->suspended) {
 474                 dev_dbg(dev, "not suspended, leaving early\n");
 475                 return 0;
 476         }
 477
 478         pdata->suspended = 0;
 479
 480         dev_dbg(dev, "resuming...\n");
 481
 482         /* set host mode */
 483         tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);
 484         ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);
 485
 486         ehci_writel(ehci, pdata->pm_usbgenctrl,
 487                     hcd->regs + FSL_SOC_USB_USBGENCTRL);
 488         ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
 489                     hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
 490
 491         ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
 492
 493         /* restore EHCI registers */
 494         ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
 495         ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);
 496         ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);
 497         ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);
 498         ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);
 499         ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);
 500         ehci_writel(ehci, pdata->pm_configured_flag,
 501                     &ehci->regs->configured_flag);
 502         ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
 503
 504         set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 505         ehci->rh_state = EHCI_RH_RUNNING;
 506         dev->power.power_state = PMSG_ON;
 507
 508         tmp = ehci_readl(ehci, &ehci->regs->command);
 509         tmp |= CMD_RUN;
 510         ehci_writel(ehci, tmp, &ehci->regs->command);
 511
 512         usb_hcd_resume_root_hub(hcd);
 513
 514         return 0;
 515 }
 516 #else
 517 static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 518 {
 519         return 0;
 520 }
 521
 522 static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 523 {
 524         return 0;
 525 }
 526 #endif /* CONFIG_PPC_MPC512x */
 527
 528 static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
 529 {
 530         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 531
 532         return container_of(ehci, struct ehci_fsl, ehci);
 533 }
 534
 535 static int ehci_fsl_drv_suspend(struct device *dev)
 536 {
 537         struct usb_hcd *hcd = dev_get_drvdata(dev);
 538         struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 539         void __iomem *non_ehci = hcd->regs;
 540
 541         if (of_device_is_compatible(dev->parent->of_node,
 542                                     "fsl,mpc5121-usb2-dr")) {
 543                 return ehci_fsl_mpc512x_drv_suspend(dev);
 544         }
 545
 546         ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
 547                         device_may_wakeup(dev));
 548         if (!fsl_deep_sleep())
 549                 return 0;
 550
 551         ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 552         return 0;
 553 }
 554
 555 static int ehci_fsl_drv_resume(struct device *dev)
 556 {
 557         struct usb_hcd *hcd = dev_get_drvdata(dev);
 558         struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 559         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 560         void __iomem *non_ehci = hcd->regs;
 561
 562         if (of_device_is_compatible(dev->parent->of_node,
 563                                     "fsl,mpc5121-usb2-dr")) {
 564                 return ehci_fsl_mpc512x_drv_resume(dev);
 565         }
 566
 567         ehci_prepare_ports_for_controller_resume(ehci);
 568         if (!fsl_deep_sleep())
 569                 return 0;
 570
 571         usb_root_hub_lost_power(hcd->self.root_hub);
 572
 573         /* Restore USB PHY settings and enable the controller. */
 574         out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
 575
 576         ehci_reset(ehci);
 577         ehci_fsl_reinit(ehci);
 578
 579         return 0;
 580 }
 581
 582 static int ehci_fsl_drv_restore(struct device *dev)
 583 {
 584         struct usb_hcd *hcd = dev_get_drvdata(dev);
 585
 586         usb_root_hub_lost_power(hcd->self.root_hub);
 587         return 0;
 588 }
 589
 590 static struct dev_pm_ops ehci_fsl_pm_ops = {
 591         .suspend = ehci_fsl_drv_suspend,
 592         .resume = ehci_fsl_drv_resume,
 593         .restore = ehci_fsl_drv_restore,
 594 };
 595
 596 #define EHCI_FSL_PM_OPS         (&ehci_fsl_pm_ops)
 597 #else
 598 #define EHCI_FSL_PM_OPS         NULL
 599 #endif /* CONFIG_PM */
 600
 601 #ifdef CONFIG_USB_OTG
 602 static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
 603 {
 604         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 605         u32 status;
 606
 607         if (!port)
 608                 return -EINVAL;
 609
 610         port--;
 611
 612         /* start port reset before HNP protocol time out */
 613         status = readl(&ehci->regs->port_status[port]);
 614         if (!(status & PORT_CONNECT))
 615                 return -ENODEV;
 616
 617         /* khubd will finish the reset later */
 618         if (ehci_is_TDI(ehci)) {
 619                 writel(PORT_RESET |
 620                        (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)),
 621                        &ehci->regs->port_status[port]);
 622         } else {
 623                 writel(PORT_RESET, &ehci->regs->port_status[port]);
 624         }
 625
 626         return 0;
 627 }
 628 #else
 629 #define ehci_start_port_reset   NULL
 630 #endif /* CONFIG_USB_OTG */
 631
 632
 633 static const struct hc_driver ehci_fsl_hc_driver = {
 634         .description = hcd_name,
 635         .product_desc = "Freescale On-Chip EHCI Host Controller",
 636         .hcd_priv_size = sizeof(struct ehci_fsl),
 637
 638         /*
 639          * generic hardware linkage
 640          */
 641         .irq = ehci_irq,
 642         .flags = HCD_USB2 | HCD_MEMORY,
 643
 644         /*
 645          * basic lifecycle operations
 646          */
 647         .reset = ehci_fsl_setup,
 648         .start = ehci_run,
 649         .stop = ehci_stop,
 650         .shutdown = ehci_shutdown,
 651
 652         /*
 653          * managing i/o requests and associated device resources
 654          */
 655         .urb_enqueue = ehci_urb_enqueue,
 656         .urb_dequeue = ehci_urb_dequeue,
 657         .endpoint_disable = ehci_endpoint_disable,
 658         .endpoint_reset = ehci_endpoint_reset,
 659
 660         /*
 661          * scheduling support
 662          */
 663         .get_frame_number = ehci_get_frame,
 664
 665         /*
 666          * root hub support
 667          */
 668         .hub_status_data = ehci_hub_status_data,
 669         .hub_control = ehci_hub_control,
 670         .bus_suspend = ehci_bus_suspend,
 671         .bus_resume = ehci_bus_resume,
 672         .start_port_reset = ehci_start_port_reset,
 673         .relinquish_port = ehci_relinquish_port,
 674         .port_handed_over = ehci_port_handed_over,
 675
 676         .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 677 };
 678
 679 static int ehci_fsl_drv_probe(struct platform_device *pdev)
 680 {
 681         if (usb_disabled())
 682                 return -ENODEV;
 683
 684         /* FIXME we only want one one probe() not two */
 685         return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
 686 }
 687
 688 static int ehci_fsl_drv_remove(struct platform_device *pdev)
 689 {
 690         struct usb_hcd *hcd = platform_get_drvdata(pdev);
 691
 692         /* FIXME we only want one one remove() not two */
 693         usb_hcd_fsl_remove(hcd, pdev);
 694         return 0;
 695 }
 696
 697 MODULE_ALIAS("platform:fsl-ehci");
 698
 699 static struct platform_driver ehci_fsl_driver = {
 700         .probe = ehci_fsl_drv_probe,
 701         .remove = ehci_fsl_drv_remove,
 702         .shutdown = usb_hcd_platform_shutdown,
 703         .driver = {
 704                 .name = "fsl-ehci",
 705                 .pm = EHCI_FSL_PM_OPS,
 706         },
 707 };