target/linux/gemini/patches-3.10/130-usb-ehci-gemini-fot2gxx-support.patch

   1 --- /dev/null
   2 +++ b/drivers/usb/host/ehci-fotg2xx.c
   3 @@ -0,0 +1,459 @@
   4 +/*
   5 + *  EHCI Host Controller driver
   6 + *
   7 + *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   8 + *  Copyright 2006 Sony Corp.
   9 + *
  10 + *  This program is free software; you can redistribute it and/or modify
  11 + *  it under the terms of the GNU General Public License as published by
  12 + *  the Free Software Foundation; version 2 of the License.
  13 + */
  14 +
  15 +#include <linux/platform_device.h>
  16 +#include <mach/hardware.h>
  17 +
  18 +#define otg_set(port, bits) writel(readl(hcd->regs + port) | bits, hcd->regs + port)
  19 +
  20 +#define otg_clear(port, bits) writel(readl(hcd->regs + port) & ~bits, hcd->regs + port)
  21 +
  22 +#define GLOBAL_ISR                     0xC0
  23 +#define GLOBAL_ICR                     0xC4
  24 +
  25 +#define HCD_MISC                       0x40
  26 +
  27 +#define OTGC_SCR                       0x80
  28 +#define OTGC_INT_EN                    0x88
  29 +
  30 +#define GLOBAL_INT_POLARITY            (1 << 3)
  31 +#define GLOBAL_INT_MASK_HC             (1 << 2)
  32 +#define GLOBAL_INT_MASK_OTG            (1 << 1)
  33 +#define GLOBAL_INT_MASK_DEV            (1 << 0)
  34 +
  35 +#define OTGC_SCR_ID                    (1 << 21)
  36 +#define OTGC_SCR_CROLE                 (1 << 20)
  37 +#define OTGC_SCR_VBUS_VLD              (1 << 19)
  38 +#define OTGC_SCR_A_SRP_RESP_TYPE       (1 << 8)
  39 +#define OTGC_SCR_A_SRP_DET_EN          (1 << 7)
  40 +#define OTGC_SCR_A_SET_B_HNP_EN                (1 << 6)
  41 +#define OTGC_SCR_A_BUS_DROP            (1 << 5)
  42 +#define OTGC_SCR_A_BUS_REQ             (1 << 4)
  43 +
  44 +#define OTGC_INT_APLGRMV               (1 << 12)
  45 +#define OTGC_INT_BPLGRMV               (1 << 11)
  46 +#define OTGC_INT_OVC                   (1 << 10)
  47 +#define OTGC_INT_IDCHG                 (1 << 9)
  48 +#define OTGC_INT_RLCHG                 (1 << 8)
  49 +#define OTGC_INT_AVBUSERR              (1 << 5)
  50 +#define OTGC_INT_ASRPDET               (1 << 4)
  51 +#define OTGC_INT_BSRPDN                        (1 << 0)
  52 +
  53 +#define OTGC_INT_A_TYPE                (OTGC_INT_ASRPDET|OTGC_INT_AVBUSERR|OTGC_INT_OVC|OTGC_INT_RLCHG|OTGC_INT_IDCHG|OTGC_INT_APLGRMV)
  54 +#define OTGC_INT_B_TYPE                (OTGC_INT_AVBUSERR|OTGC_INT_OVC|OTGC_INT_RLCHG|OTGC_INT_IDCHG)
  55 +
  56 +static void fotg2xx_otgc_role_change(struct usb_hcd *hcd);
  57 +
  58 +static void fotg2xx_otgc_init(struct usb_hcd *hcd)
  59 +{
  60 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  61 +       unsigned int reg;
  62 +
  63 +       reg = __raw_readl(hcd->regs + OTGC_SCR);
  64 +       ehci_info(ehci, "role detected: %s, ",
  65 +                 (reg & OTGC_SCR_CROLE) ? "Peripheral" : "Host");
  66 +
  67 +       if (reg & OTGC_SCR_ID)
  68 +               ehci_info(ehci, "B-Device (may be unsupported!)\n");
  69 +       else
  70 +               ehci_info(ehci, "A-Device\n");
  71 +
  72 +       /* Enable the SRP detect */
  73 +       reg &= ~OTGC_SCR_A_SRP_RESP_TYPE;
  74 +       __raw_writel(reg, hcd->regs + OTGC_SCR);
  75 +
  76 +       reg = __raw_readl(hcd->regs + OTGC_INT_EN);
  77 +       /* clear INT B: bits AVBUSERR | OVC | RLCHG | IDCHG */
  78 +       reg &= ~OTGC_INT_B_TYPE;
  79 +       /* set INT A: bits ASRPDET | AVBUSERR | OVC | RLCHG | IDCHG | APLGRMV */
  80 +       reg |= OTGC_INT_A_TYPE;
  81 +       __raw_writel(reg, hcd->regs + OTGC_INT_EN);
  82 +
  83 +       reg = __raw_readl(hcd->regs + GLOBAL_ICR);
  84 +       reg &= ~GLOBAL_INT_MASK_OTG;
  85 +       __raw_writel(reg, hcd->regs + GLOBAL_ICR);
  86 +
  87 +       /* setup MISC register, fixes timing problems */
  88 +       reg = __raw_readl(hcd->regs + HCD_MISC);
  89 +       reg |= 0xD;
  90 +       __raw_writel(reg, hcd->regs + HCD_MISC);
  91 +
  92 +       fotg2xx_otgc_role_change(hcd);
  93 +}
  94 +
  95 +static void fotg2xx_otgh_close(struct usb_hcd *hcd)
  96 +{
  97 +       unsigned int reg;
  98 +
  99 +       /* <1>.Enable Interrupt Mask */
 100 +       reg = __raw_readl(hcd->regs + GLOBAL_ICR);
 101 +       reg |= GLOBAL_INT_MASK_HC;
 102 +       __raw_writel(reg, hcd->regs + GLOBAL_ICR);
 103 +
 104 +       /* <2>.Clear the Interrupt status */
 105 +       reg = __raw_readl(hcd->regs + 0x18);
 106 +       reg &= 0x0000003F;
 107 +       __raw_writel(reg, hcd->regs + 0x14);
 108 +}
 109 +
 110 +static void fotg2xx_otgh_open(struct usb_hcd *hcd)
 111 +{
 112 +       unsigned int reg;
 113 +
 114 +       reg = __raw_readl(hcd->regs + OTGC_SCR);
 115 +       reg &= ~OTGC_SCR_A_SRP_DET_EN;
 116 +       __raw_writel(reg, hcd->regs + OTGC_SCR);
 117 +
 118 +       reg = __raw_readl(hcd->regs + GLOBAL_ICR);
 119 +       reg &= ~GLOBAL_INT_MASK_HC;
 120 +       __raw_writel(reg, hcd->regs + GLOBAL_ICR);
 121 +}
 122 +
 123 +/* change to host role */
 124 +static void fotg2xx_otgc_role_change(struct usb_hcd *hcd)
 125 +{
 126 +
 127 +       /* clear A_SET_B_HNP_EN */
 128 +       otg_clear(0x80, BIT(6));
 129 +
 130 +       /*** Enable VBUS driving */
 131 +       if (readl(hcd->regs + 0x80) & BIT(19))
 132 +               printk(KERN_INFO "VBUS already enabled\n");
 133 +       else {
 134 +               int cnt = 0;
 135 +
 136 +               /* clear A_BUS_DROP */
 137 +               otg_clear(0x80, BIT(5));
 138 +
 139 +               /* set A_BUS_REQ */
 140 +               otg_set(0x80, BIT(4));
 141 +
 142 +               /* set global bus reg to VBUS on */
 143 +               writel(readl(IO_ADDRESS(0x40000000) + 0x30) | ((BIT(21)|BIT(22))),
 144 +                       IO_ADDRESS(0x40000000) + 0x30);
 145 +
 146 +               if (readl(hcd->regs + 0x80) & (1<<19)) {
 147 +                       printk(KERN_INFO "Waiting for VBus");
 148 +                       while (!(readl(hcd->regs + 0x80) & (1<<19)) && (cnt < 80)) {
 149 +                               printk(KERN_CONT ".");
 150 +                               cnt++;
 151 +                       }
 152 +                       printk(KERN_CONT "\n");
 153 +               } else
 154 +                       printk(KERN_INFO "VBUS enabled.\n");
 155 +
 156 +               mdelay(1);
 157 +       }
 158 +       fotg2xx_otgh_open(hcd);
 159 +}
 160 +
 161 +static int fotg2xx_ehci_hc_reset(struct usb_hcd *hcd)
 162 +{
 163 +       int result;
 164 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 165 +
 166 +       ehci->caps = hcd->regs;
 167 +       ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 168 +
 169 +       dbg_hcs_params(ehci, "reset");
 170 +       dbg_hcc_params(ehci, "reset");
 171 +
 172 +       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 173 +       hcd->has_tt = 1;
 174 +
 175 +       result = ehci_halt(ehci);
 176 +       if (result)
 177 +               return result;
 178 +
 179 +       return ehci_init(hcd);
 180 +}
 181 +
 182 +/*
 183 + * Name: OTGC_INT_ISR
 184 + * Description:This interrupt service routine belongs to the OTG-Controller
 185 + *           <1>.Check for ID_Change
 186 + *           <2>.Check for RL_Change
 187 + *           <3>.Error Detect
 188 + * Input: wINTStatus
 189 + * Output:void
 190 + */
 191 +void fotg2xx_int_isr(struct usb_hcd *hcd, u32 wINTStatus)
 192 +{
 193 +       /* <1>.Check for ID_Change */
 194 +       if (wINTStatus&OTGC_INT_IDCHG) {
 195 +               if ((readl(hcd->regs + 0x80) & BIT(21)) != 0)
 196 +                       fotg2xx_otgc_init(hcd); /* Change to B Type */
 197 +               else
 198 +                       fotg2xx_otgc_init(hcd); /* Change to A Type */
 199 +
 200 +               return;
 201 +       }
 202 +
 203 +       /* <2>.Check for RL_Change */
 204 +       if (wINTStatus&OTGC_INT_RLCHG)
 205 +               fotg2xx_otgc_role_change(hcd);
 206 +
 207 +       /* <3>.Error Detect */
 208 +       if (wINTStatus&OTGC_INT_AVBUSERR)
 209 +               printk(KERN_ERR "VBus error!\n");
 210 +
 211 +       if (wINTStatus&OTGC_INT_OVC)
 212 +               printk(KERN_WARNING "Overcurrent detected!\n");
 213 +
 214 +       /* <3>.Check for Type-A/Type-B Interrupt */
 215 +       if ((readl(hcd->regs + 0x80) & BIT(21)) == 0) { /*For Type-A Interrupt*/
 216 +               if (wINTStatus & (OTGC_INT_A_TYPE | OTGC_INT_ASRPDET)) {
 217 +                       /* <1>.SRP detected => then set global variable */
 218 +                       printk(KERN_WARNING "SRP detected, but not implemented!\n");
 219 +
 220 +#if 0
 221 +                       u32 wTempCounter;
 222 +                       /* <2>.Turn on the V Bus */
 223 +                       pFTC_OTG->otg.state = OTG_STATE_A_WAIT_VRISE;
 224 +                       OTGC_enable_vbus_draw_storlink(1);
 225 +                       pFTC_OTG->otg.state = OTG_STATE_A_HOST;
 226 +                       /* <3>.Should waiting for Device-Connect Wait 300ms */
 227 +                       INFO(pFTC_OTG, ">>> OTG-A Waiting for OTG-B Connect,\n");
 228 +                       wTempCounter = 0;
 229 +                       while (mwHost20_PORTSC_ConnectStatus_Rd() == 0) {
 230 +                               mdelay(1);
 231 +                               wTempCounter++;
 232 +                               /* Waiting for 300 ms */
 233 +                               if (wTempCounter > 300) {
 234 +                                       mdwOTGC_Control_A_SRP_DET_EN_Clr();
 235 +                                       INFO(pFTC_OTG, ">>> OTG-B do not connect under 300 ms...\n");
 236 +                                       break;
 237 +                               }
 238 +                       }
 239 +                       /* <4>.If Connect => issue quick Reset */
 240 +                       if (mwHost20_PORTSC_ConnectStatus_Rd() > 0) {
 241 +                               mdelay(300); /* For OPT-A Test */
 242 +                               OTGH_host_quick_Reset();
 243 +                               OTGH_Open();
 244 +                               pFTC_OTG->otg.host->A_Disable_Set_Feature_HNP = 0;
 245 +                       }
 246 +#endif
 247 +               }
 248 +       } else { /* For Type-B Interrupt */
 249 +               BUG();
 250 +       }
 251 +}
 252 +
 253 +static irqreturn_t fotg2xx_ehci_irq(int irq, void *devid)
 254 +{
 255 +       struct usb_hcd *hcd = devid;
 256 +       u32 val;
 257 +
 258 +       /* OTG Interrupt Status Register */
 259 +       val = readl(hcd->regs + 0x84);
 260 +
 261 +       /* OTG stuff */
 262 +       if (val) {
 263 +               /* supposed to do "INT STS Clr" - XXX */
 264 +               writel(readl(hcd->regs + 0x84) | val, hcd->regs + 0x84);
 265 +
 266 +               fotg2xx_int_isr(hcd, val);
 267 +
 268 +               /* supposed to do "INT STS Clr" - XXX */
 269 +               writel(readl(hcd->regs + 0x84) | val, hcd->regs + 0x84);
 270 +
 271 +               return IRQ_HANDLED;
 272 +       }
 273 +
 274 +       if ((readl(hcd->regs + 0x80) & BIT(20)) == 0) { /* Role is HOST */
 275 +               if (readl(hcd->regs + 0xC0) & BIT(2)) { /* INT STS HOST */
 276 +                       /* leave this for ehci irq handler */
 277 +                       return IRQ_NONE;
 278 +               }
 279 +       } else
 280 +               printk(KERN_WARNING
 281 +                     "received irq for peripheral - don't know what to do!\n");
 282 +
 283 +       /* do not call the ehci irq handler */
 284 +       return IRQ_HANDLED;
 285 +}
 286 +
 287 +static int fotg2xx_ehci_run(struct usb_hcd *hcd)
 288 +{
 289 +       int retval;
 290 +
 291 +       retval = ehci_run(hcd);
 292 +
 293 +       fotg2xx_otgh_close(hcd);
 294 +       fotg2xx_otgc_init(hcd);
 295 +
 296 +       return retval;
 297 +}
 298 +
 299 +static const struct hc_driver fotg2xx_ehci_hc_driver = {
 300 +       .description            = hcd_name,
 301 +       .product_desc           = "FOTG2XX EHCI Host Controller",
 302 +       .hcd_priv_size          = sizeof(struct ehci_hcd),
 303 +       .irq                    = ehci_irq,
 304 +       .flags                  = HCD_MEMORY | HCD_USB2,
 305 +       .reset                  = fotg2xx_ehci_hc_reset,
 306 +       .start                  = fotg2xx_ehci_run,
 307 +       .stop                   = ehci_stop,
 308 +       .shutdown               = ehci_shutdown,
 309 +
 310 +       .urb_enqueue            = ehci_urb_enqueue,
 311 +       .urb_dequeue            = ehci_urb_dequeue,
 312 +       .endpoint_disable       = ehci_endpoint_disable,
 313 +       .endpoint_reset         = ehci_endpoint_reset,
 314 +
 315 +       .get_frame_number       = ehci_get_frame,
 316 +
 317 +       .hub_status_data        = ehci_hub_status_data,
 318 +       .hub_control            = ehci_hub_control,
 319 +#if defined(CONFIG_PM)
 320 +       .bus_suspend            = ehci_bus_suspend,
 321 +       .bus_resume             = ehci_bus_resume,
 322 +#endif
 323 +       .relinquish_port        = ehci_relinquish_port,
 324 +       .port_handed_over       = ehci_port_handed_over,
 325 +
 326 +       .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 327 +};
 328 +
 329 +static int fotg2xx_ehci_probe(struct platform_device *pdev)
 330 +{
 331 +       const struct hc_driver *driver = &fotg2xx_ehci_hc_driver;
 332 +       struct usb_hcd *hcd;
 333 +       struct resource *res;
 334 +       int irq;
 335 +       int retval;
 336 +
 337 +       pr_debug("initializing FOTG2XX-SOC USB Controller\n");
 338 +
 339 +       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 340 +       if (!res) {
 341 +               dev_err(&pdev->dev,
 342 +                       "Found HC with no IRQ. Check %s setup!\n",
 343 +                       dev_name(&pdev->dev));
 344 +               return -ENODEV;
 345 +       }
 346 +
 347 +       irq = res->start;
 348 +
 349 +       hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
 350 +       if (!hcd) {
 351 +               retval = -ENOMEM;
 352 +               goto err1;
 353 +       }
 354 +
 355 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 356 +       if (!res) {
 357 +               dev_err(&pdev->dev,
 358 +                       "Found HC with no register addr. Check %s setup!\n",
 359 +                       dev_name(&pdev->dev));
 360 +               retval = -ENODEV;
 361 +               goto err2;
 362 +       }
 363 +
 364 +       hcd->rsrc_start = res->start;
 365 +       hcd->rsrc_len = res->end - res->start + 1;
 366 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
 367 +                               driver->description)) {
 368 +               dev_dbg(&pdev->dev, "controller already in use\n");
 369 +               retval = -EBUSY;
 370 +               goto err2;
 371 +       }
 372 +
 373 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 374 +       if (hcd->regs == NULL) {
 375 +               dev_dbg(&pdev->dev, "error mapping memory\n");
 376 +               retval = -EFAULT;
 377 +               goto err3;
 378 +       }
 379 +
 380 +
 381 +       /* set global reg to mini-A host */
 382 +       writel(readl(IO_ADDRESS(0x40000000) + 0x30) & ~(BIT(30)|BIT(29)),
 383 +               IO_ADDRESS(0x40000000) + 0x30);
 384 +
 385 +       /* USB0&USB1 - VBUS off */
 386 +       writel(readl(IO_ADDRESS(0x40000000) + 0x30) & ~(BIT(21)|BIT(22)),
 387 +               IO_ADDRESS(0x40000000) + 0x30);
 388 +
 389 +       if ((readl(hcd->regs) == 0x01000010) &&
 390 +               (readl(hcd->regs + 4) == 0x00000001) &&
 391 +               (readl(hcd->regs + 8) == 0x00000006)) {
 392 +               dev_info(&pdev->dev,
 393 +                       "Found Faraday OTG 2XX controller (base = 0x%08lX)\n",
 394 +                       (unsigned long) hcd->rsrc_start);
 395 +       } else {
 396 +               dev_err(&pdev->dev, "fotg2xx id mismatch: found %d.%d.%d\n",
 397 +                       readl(hcd->regs + 0x00),
 398 +                       readl(hcd->regs + 0x04),
 399 +                       readl(hcd->regs + 0x08));
 400 +               retval = -ENODEV;
 401 +               goto err4;
 402 +       }
 403 +
 404 +       platform_set_drvdata(pdev, hcd);
 405 +
 406 +       /* mask interrupts - peripheral, otg, host, hi-active (bits 0,1,2,3) */
 407 +       otg_set(0xc4, BIT(3)); /* hi active */
 408 +
 409 +       otg_set(0xc4, BIT(2)); /* host */
 410 +       otg_set(0xc4, BIT(1)); /* otg */
 411 +       otg_set(0xc4, BIT(0)); /* peripheral */
 412 +
 413 +       /* register additional interrupt - here we check otg status */
 414 +       if ((request_irq(irq, &fotg2xx_ehci_irq, IRQF_SHARED | IRQF_DISABLED,
 415 +               hcd->irq_descr, hcd)) != 0) {
 416 +               dev_dbg(&pdev->dev, "error requesting irq %d\n", irq);
 417 +               retval = -EFAULT;
 418 +               goto err4;
 419 +       }
 420 +
 421 +       retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
 422 +       if (retval != 0)
 423 +               goto err4;
 424 +       return retval;
 425 +
 426 +err4:
 427 +       iounmap(hcd->regs);
 428 +err3:
 429 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 430 +err2:
 431 +       usb_put_hcd(hcd);
 432 +err1:
 433 +       dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
 434 +       return retval;
 435 +}
 436 +
 437 +/* may be called without controller electrically present */
 438 +/* may be called with controller, bus, and devices active */
 439 +
 440 +int fotg2xx_ehci_remove(struct platform_device *pdev)
 441 +{
 442 +       struct usb_hcd *hcd =
 443 +               (struct usb_hcd *)platform_get_drvdata(pdev);
 444 +
 445 +       usb_remove_hcd(hcd);
 446 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 447 +       iounmap(hcd->regs);
 448 +       usb_put_hcd(hcd);
 449 +       platform_set_drvdata(pdev, NULL);
 450 +
 451 +       return 0;
 452 +}
 453 +
 454 +MODULE_ALIAS("platform:ehci-fotg2xx");
 455 +
 456 +static struct platform_driver fotg2xx_ehci_driver = {
 457 +       .probe = fotg2xx_ehci_probe,
 458 +       .remove = fotg2xx_ehci_remove,
 459 +       .driver = {
 460 +               .name = "ehci-fotg2xx",
 461 +       },
 462 +};
 463 --- a/drivers/usb/host/ehci.h
 464 +++ b/drivers/usb/host/ehci.h
 465 @@ -603,7 +603,12 @@ static inline unsigned int
 466  ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
 467  {
 468         if (ehci_is_TDI(ehci)) {
 469 +#ifdef CONFIG_ARCH_GEMINI
 470 +               portsc = readl(ehci_to_hcd(ehci)->regs + 0x80);
 471 +               switch ((portsc>>22)&3) {
 472 +#else
 473                 switch ((portsc >> (ehci->has_hostpc ? 25 : 26)) & 3) {
 474 +#endif
 475                 case 0:
 476                         return 0;
 477                 case 1:
 478 --- a/drivers/usb/host/ehci-hcd.c
 479 +++ b/drivers/usb/host/ehci-hcd.c
 480 @@ -204,10 +204,12 @@ static int ehci_halt (struct ehci_hcd *e
 481          * This routine gets called during probe before ehci->command
 482          * has been initialized, so we can't rely on its value.
 483          */
 484 +#ifndef CONFIG_ARCH_GEMINI
 485         ehci->command &= ~CMD_RUN;
 486         temp = ehci_readl(ehci, &ehci->regs->command);
 487         temp &= ~(CMD_RUN | CMD_IAAD);
 488         ehci_writel(ehci, temp, &ehci->regs->command);
 489 +#endif
 490
 491         spin_unlock_irq(&ehci->lock);
 492         synchronize_irq(ehci_to_hcd(ehci)->irq);
 493 @@ -257,13 +259,17 @@ static int ehci_reset (struct ehci_hcd *
 494         if (ehci->has_hostpc) {
 495                 ehci_writel(ehci, USBMODE_EX_HC | USBMODE_EX_VBPS,
 496                                 &ehci->regs->usbmode_ex);
 497 +#ifndef CONFIG_ARCH_GEMINI
 498                 ehci_writel(ehci, TXFIFO_DEFAULT, &ehci->regs->txfill_tuning);
 499 +#endif
 500         }
 501         if (retval)
 502                 return retval;
 503
 504 +#ifndef CONFIG_ARCH_GEMINI
 505         if (ehci_is_TDI(ehci))
 506                 tdi_reset (ehci);
 507 +#endif
 508
 509         if (ehci->debug)
 510                 dbgp_external_startup(ehci_to_hcd(ehci));
 511 @@ -341,11 +347,14 @@ static void ehci_silence_controller(stru
 512         ehci->rh_state = EHCI_RH_HALTED;
 513         ehci_turn_off_all_ports(ehci);
 514
 515 +#ifndef CONFIG_ARCH_GEMINI
 516         /* make BIOS/etc use companion controller during reboot */
 517         ehci_writel(ehci, 0, &ehci->regs->configured_flag);
 518
 519         /* unblock posted writes */
 520         ehci_readl(ehci, &ehci->regs->configured_flag);
 521 +#endif
 522 +
 523         spin_unlock_irq(&ehci->lock);
 524  }
 525
 526 @@ -603,7 +612,9 @@ static int ehci_run (struct usb_hcd *hcd
 527         // Philips, Intel, and maybe others need CMD_RUN before the
 528         // root hub will detect new devices (why?); NEC doesn't
 529         ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
 530 +#ifndef CONFIG_ARCH_GEMINI
 531         ehci->command |= CMD_RUN;
 532 +#endif
 533         ehci_writel(ehci, ehci->command, &ehci->regs->command);
 534         dbg_cmd (ehci, "init", ehci->command);
 535
 536 @@ -623,9 +634,11 @@ static int ehci_run (struct usb_hcd *hcd
 537          */
 538         down_write(&ehci_cf_port_reset_rwsem);
 539         ehci->rh_state = EHCI_RH_RUNNING;
 540 +#ifndef CONFIG_ARCH_GEMINI
 541         ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
 542         ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
 543         msleep(5);
 544 +#endif /* !CONFIG_ARCH_GEMINI */
 545         up_write(&ehci_cf_port_reset_rwsem);
 546         ehci->last_periodic_enable = ktime_get_real();
 547
 548 @@ -1228,6 +1241,11 @@ MODULE_DESCRIPTION(DRIVER_DESC);
 549  MODULE_AUTHOR (DRIVER_AUTHOR);
 550  MODULE_LICENSE ("GPL");
 551
 552 +#ifdef CONFIG_ARCH_GEMINI
 553 +#include "ehci-fotg2xx.c"
 554 +#define PLATFORM_DRIVER                fotg2xx_ehci_driver
 555 +#endif
 556 +
 557  #ifdef CONFIG_USB_EHCI_FSL
 558  #include "ehci-fsl.c"
 559  #define        PLATFORM_DRIVER         ehci_fsl_driver
 560 --- a/drivers/usb/host/ehci-hub.c
 561 +++ b/drivers/usb/host/ehci-hub.c
 562 @@ -914,6 +914,12 @@ static int ehci_hub_control (
 563                         /* see what we found out */
 564                         temp = check_reset_complete (ehci, wIndex, status_reg,
 565                                         ehci_readl(ehci, status_reg));
 566 +#ifdef CONFIG_ARCH_GEMINI
 567 +                       /* restart schedule */
 568 +                       ehci_writel(ehci, ehci_readl(ehci, &ehci->regs->command) | CMD_RUN, &ehci->regs->command);
 569 +
 570 +//                     hcd->state = HC_STATE_RUNNING;
 571 +#endif
 572                 }
 573
 574                 if (!(temp & (PORT_RESUME|PORT_RESET))) {
 575 --- a/drivers/usb/Kconfig
 576 +++ b/drivers/usb/Kconfig
 577 @@ -47,6 +47,7 @@ config USB_ARCH_HAS_EHCI
 578         default y if MICROBLAZE
 579         default y if SPARC_LEON
 580         default y if ARCH_MMP
 581 +       default y if ARCH_GEMINI
 582         default y if MACH_LOONGSON1
 583         default y if PLAT_ORION
 584         default PCI
 585 @@ -96,7 +97,7 @@ config USB
 586           traditional PC serial port.  The bus supplies power to peripherals
 587           and allows for hot swapping.  Up to 127 USB peripherals can be
 588           connected to a single USB host in a tree structure.
 589 -
 590 +
 591           The USB host is the root of the tree, the peripherals are the
 592           leaves and the inner nodes are special USB devices called hubs.
 593           Most PCs now have USB host ports, used to connect peripherals
 594 --- a/include/linux/usb/ehci_def.h
 595 +++ b/include/linux/usb/ehci_def.h
 596 @@ -111,6 +111,7 @@ struct ehci_regs {
 597         /* ASYNCLISTADDR: offset 0x18 */
 598         u32             async_next;     /* address of next async queue head */
 599
 600 +#ifndef CONFIG_ARCH_GEMINI
 601         u32             reserved1[2];
 602
 603         /* TXFILLTUNING: offset 0x24 */
 604 @@ -118,6 +119,7 @@ struct ehci_regs {
 605  #define TXFIFO_DEFAULT (8<<16)         /* FIFO burst threshold 8 */
 606
 607         u32             reserved2[6];
 608 +#endif /* !CONFIG_ARCH_GEMINI */
 609
 610         /* CONFIGFLAG: offset 0x40 */
 611         u32             configured_flag;