drivers/usb/chipidea/usbmisc_imx.c

   1 /*
   2  * Copyright 2012-2015 Freescale Semiconductor, Inc.
   3  *
   4  * The code contained herein is licensed under the GNU General Public
   5  * License. You may obtain a copy of the GNU General Public License
   6  * Version 2 or later at the following locations:
   7  *
   8  * http://www.opensource.org/licenses/gpl-license.html
   9  * http://www.gnu.org/copyleft/gpl.html
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/of_platform.h>
  14 #include <linux/err.h>
  15 #include <linux/io.h>
  16 #include <linux/delay.h>
  17 #include <linux/regmap.h>
  18 #include <linux/regulator/consumer.h>
  19
  20 #include "ci_hdrc_imx.h"
  21
  22 #define MX25_USB_PHY_CTRL_OFFSET        0x08
  23 #define MX25_BM_EXTERNAL_VBUS_DIVIDER   BIT(23)
  24
  25 #define MX25_EHCI_INTERFACE_SINGLE_UNI  (2 << 0)
  26 #define MX25_EHCI_INTERFACE_DIFF_UNI    (0 << 0)
  27 #define MX25_EHCI_INTERFACE_MASK        (0xf)
  28
  29 #define MX25_OTG_SIC_SHIFT              29
  30 #define MX25_OTG_SIC_MASK               (0x3 << MX25_OTG_SIC_SHIFT)
  31 #define MX25_OTG_PM_BIT                 BIT(24)
  32 #define MX25_OTG_PP_BIT                 BIT(11)
  33 #define MX25_OTG_OCPOL_BIT              BIT(3)
  34
  35 #define MX25_H1_SIC_SHIFT               21
  36 #define MX25_H1_SIC_MASK                (0x3 << MX25_H1_SIC_SHIFT)
  37 #define MX25_H1_PP_BIT                  BIT(18)
  38 #define MX25_H1_PM_BIT                  BIT(16)
  39 #define MX25_H1_IPPUE_UP_BIT            BIT(7)
  40 #define MX25_H1_IPPUE_DOWN_BIT          BIT(6)
  41 #define MX25_H1_TLL_BIT                 BIT(5)
  42 #define MX25_H1_USBTE_BIT               BIT(4)
  43 #define MX25_H1_OCPOL_BIT               BIT(2)
  44
  45 #define MX27_H1_PM_BIT                  BIT(8)
  46 #define MX27_H2_PM_BIT                  BIT(16)
  47 #define MX27_OTG_PM_BIT                 BIT(24)
  48
  49 #define MX53_USB_OTG_PHY_CTRL_0_OFFSET  0x08
  50 #define MX53_USB_OTG_PHY_CTRL_1_OFFSET  0x0c
  51 #define MX53_USB_UH2_CTRL_OFFSET        0x14
  52 #define MX53_USB_UH3_CTRL_OFFSET        0x18
  53 #define MX53_BM_OVER_CUR_DIS_H1         BIT(5)
  54 #define MX53_BM_OVER_CUR_DIS_OTG        BIT(8)
  55 #define MX53_BM_OVER_CUR_DIS_UHx        BIT(30)
  56 #define MX53_USB_PHYCTRL1_PLLDIV_MASK   0x3
  57 #define MX53_USB_PLL_DIV_24_MHZ         0x01
  58
  59 #define MX6_BM_UNBURST_SETTING          BIT(1)
  60 #define MX6_BM_OVER_CUR_DIS             BIT(7)
  61 #define MX6_BM_WAKEUP_ENABLE            BIT(10)
  62 #define MX6_BM_UTMI_ON_CLOCK            BIT(13)
  63 #define MX6_BM_ID_WAKEUP                BIT(16)
  64 #define MX6_BM_VBUS_WAKEUP              BIT(17)
  65 #define MX6SX_BM_DPDM_WAKEUP_EN         BIT(29)
  66 #define MX6_BM_WAKEUP_INTR              BIT(31)
  67
  68 #define MX6_USB_HSIC_CTRL_OFFSET        0x10
  69 /* Send resume signal without 480Mhz PHY clock */
  70 #define MX6SX_BM_HSIC_AUTO_RESUME       BIT(23)
  71 /* set before portsc.suspendM = 1 */
  72 #define MX6_BM_HSIC_DEV_CONN            BIT(21)
  73 /* HSIC enable */
  74 #define MX6_BM_HSIC_EN                  BIT(12)
  75 /* Force HSIC module 480M clock on, even when in Host is in suspend mode */
  76 #define MX6_BM_HSIC_CLK_ON              BIT(11)
  77
  78 #define MX6_USB_OTG1_PHY_CTRL           0x18
  79 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */
  80 #define MX6_USB_OTG2_PHY_CTRL           0x1c
  81 #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
  82 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS       MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
  83 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID     MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
  84 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID     MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
  85 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END   MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
  86
  87 #define VF610_OVER_CUR_DIS              BIT(7)
  88
  89 #define ANADIG_ANA_MISC0                0x150
  90 #define ANADIG_ANA_MISC0_SET            0x154
  91 #define ANADIG_ANA_MISC0_CLK_DELAY(x)   ((x >> 26) & 0x7)
  92
  93 struct usbmisc_ops {
  94         /* It's called once when probe a usb device */
  95         int (*init)(struct imx_usbmisc_data *data);
  96         /* It's called once after adding a usb device */
  97         int (*post)(struct imx_usbmisc_data *data);
  98         /* It's called when we need to enable/disable usb wakeup */
  99         int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
 100         /* It's called when system resume from usb power lost */
 101         int (*power_lost_check)(struct imx_usbmisc_data *data);
 102         /* It's called before setting portsc.suspendM */
 103         int (*hsic_set_connect)(struct imx_usbmisc_data *data);
 104         /* It's called during suspend/resume */
 105         int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled);
 106 };
 107
 108 struct imx_usbmisc {
 109         void __iomem *base;
 110         spinlock_t lock;
 111         const struct usbmisc_ops *ops;
 112 };
 113
 114 static struct regulator *vbus_wakeup_reg;
 115
 116 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
 117 {
 118         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 119         unsigned long flags;
 120         u32 val = 0;
 121
 122         if (data->index > 1)
 123                 return -EINVAL;
 124
 125         spin_lock_irqsave(&usbmisc->lock, flags);
 126         switch (data->index) {
 127         case 0:
 128                 val = readl(usbmisc->base);
 129                 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
 130                 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
 131                 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
 132                 writel(val, usbmisc->base);
 133                 break;
 134         case 1:
 135                 val = readl(usbmisc->base);
 136                 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT |  MX25_H1_IPPUE_UP_BIT);
 137                 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
 138                 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
 139                         MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
 140
 141                 writel(val, usbmisc->base);
 142
 143                 break;
 144         }
 145         spin_unlock_irqrestore(&usbmisc->lock, flags);
 146
 147         return 0;
 148 }
 149
 150 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
 151 {
 152         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 153         void __iomem *reg;
 154         unsigned long flags;
 155         u32 val;
 156
 157         if (data->index > 2)
 158                 return -EINVAL;
 159
 160         if (data->evdo) {
 161                 spin_lock_irqsave(&usbmisc->lock, flags);
 162                 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
 163                 val = readl(reg);
 164                 writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
 165                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 166                 usleep_range(5000, 10000); /* needed to stabilize voltage */
 167         }
 168
 169         return 0;
 170 }
 171
 172 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
 173 {
 174         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 175         unsigned long flags;
 176         u32 val;
 177
 178         switch (data->index) {
 179         case 0:
 180                 val = MX27_OTG_PM_BIT;
 181                 break;
 182         case 1:
 183                 val = MX27_H1_PM_BIT;
 184                 break;
 185         case 2:
 186                 val = MX27_H2_PM_BIT;
 187                 break;
 188         default:
 189                 return -EINVAL;
 190         };
 191
 192         spin_lock_irqsave(&usbmisc->lock, flags);
 193         if (data->disable_oc)
 194                 val = readl(usbmisc->base) | val;
 195         else
 196                 val = readl(usbmisc->base) & ~val;
 197         writel(val, usbmisc->base);
 198         spin_unlock_irqrestore(&usbmisc->lock, flags);
 199
 200         return 0;
 201 }
 202
 203 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
 204 {
 205         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 206         void __iomem *reg = NULL;
 207         unsigned long flags;
 208         u32 val = 0;
 209
 210         if (data->index > 3)
 211                 return -EINVAL;
 212
 213         /* Select a 24 MHz reference clock for the PHY  */
 214         val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
 215         val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
 216         val |= MX53_USB_PLL_DIV_24_MHZ;
 217         writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
 218
 219         if (data->disable_oc) {
 220                 spin_lock_irqsave(&usbmisc->lock, flags);
 221                 switch (data->index) {
 222                 case 0:
 223                         reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
 224                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
 225                         break;
 226                 case 1:
 227                         reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
 228                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
 229                         break;
 230                 case 2:
 231                         reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
 232                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
 233                         break;
 234                 case 3:
 235                         reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
 236                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
 237                         break;
 238                 }
 239                 if (reg && val)
 240                         writel(val, reg);
 241                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 242         }
 243
 244         return 0;
 245 }
 246
 247 static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data)
 248 {
 249         unsigned long flags;
 250         u32 val;
 251         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 252
 253         spin_lock_irqsave(&usbmisc->lock, flags);
 254         if (data->index == 2 || data->index == 3) {
 255                 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
 256                                                 + (data->index - 2) * 4);
 257                 if (!(val & MX6_BM_HSIC_DEV_CONN))
 258                         writel(val | MX6_BM_HSIC_DEV_CONN,
 259                                 usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
 260                                                 + (data->index - 2) * 4);
 261         }
 262         spin_unlock_irqrestore(&usbmisc->lock, flags);
 263
 264         return 0;
 265 }
 266
 267 static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
 268 {
 269         unsigned long flags;
 270         u32 val;
 271         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 272
 273         spin_lock_irqsave(&usbmisc->lock, flags);
 274         if (data->index == 2 || data->index == 3) {
 275                 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
 276                                                 + (data->index - 2) * 4);
 277                 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
 278                 if (on)
 279                         val |= MX6_BM_HSIC_CLK_ON;
 280                 else
 281                         val &= ~MX6_BM_HSIC_CLK_ON;
 282                 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
 283                                                 + (data->index - 2) * 4);
 284         }
 285         spin_unlock_irqrestore(&usbmisc->lock, flags);
 286
 287         return 0;
 288 }
 289
 290 static u32 imx6q_finalize_wakeup_setting(struct imx_usbmisc_data *data)
 291 {
 292         if (data->available_role == USB_DR_MODE_PERIPHERAL)
 293                 return MX6_BM_VBUS_WAKEUP;
 294         else if (data->available_role == USB_DR_MODE_OTG)
 295                 return MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP;
 296
 297         return 0;
 298 }
 299
 300 static int usbmisc_imx6q_set_wakeup
 301         (struct imx_usbmisc_data *data, bool enabled)
 302 {
 303         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 304         unsigned long flags;
 305         u32 val;
 306         u32 wakeup_setting = MX6_BM_WAKEUP_ENABLE;
 307         int ret = 0;
 308
 309         if (data->index > 3)
 310                 return -EINVAL;
 311
 312         spin_lock_irqsave(&usbmisc->lock, flags);
 313         val = readl(usbmisc->base + data->index * 4);
 314         if (enabled) {
 315                 wakeup_setting |= imx6q_finalize_wakeup_setting(data);
 316                 writel(val | wakeup_setting, usbmisc->base + data->index * 4);
 317                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 318                 if (vbus_wakeup_reg)
 319                         ret = regulator_enable(vbus_wakeup_reg);
 320         } else {
 321                 if (val & MX6_BM_WAKEUP_INTR)
 322                         pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
 323                 wakeup_setting |= MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP;
 324                 writel(val & ~wakeup_setting, usbmisc->base + data->index * 4);
 325                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 326                 if (vbus_wakeup_reg && regulator_is_enabled(vbus_wakeup_reg))
 327                         regulator_disable(vbus_wakeup_reg);
 328         }
 329
 330         return ret;
 331 }
 332
 333 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
 334 {
 335         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 336         unsigned long flags;
 337         u32 reg;
 338
 339         if (data->index > 3)
 340                 return -EINVAL;
 341
 342         spin_lock_irqsave(&usbmisc->lock, flags);
 343
 344         if (data->disable_oc) {
 345                 reg = readl(usbmisc->base + data->index * 4);
 346                 writel(reg | MX6_BM_OVER_CUR_DIS,
 347                         usbmisc->base + data->index * 4);
 348         }
 349
 350         /* SoC unburst setting */
 351         reg = readl(usbmisc->base + data->index * 4);
 352         writel(reg | MX6_BM_UNBURST_SETTING,
 353                         usbmisc->base + data->index * 4);
 354
 355         spin_unlock_irqrestore(&usbmisc->lock, flags);
 356
 357         usbmisc_imx6q_set_wakeup(data, false);
 358
 359         return 0;
 360 }
 361
 362 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
 363 {
 364         void __iomem *reg = NULL;
 365         unsigned long flags;
 366         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 367         u32 val;
 368         int ret = 0;
 369
 370         usbmisc_imx6q_init(data);
 371
 372         if (data->index == 0 || data->index == 1) {
 373                 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
 374                 spin_lock_irqsave(&usbmisc->lock, flags);
 375                 /* Set vbus wakeup source as bvalid */
 376                 val = readl(reg);
 377                 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
 378                 /*
 379                  * Disable dp/dm wakeup in device mode when vbus is
 380                  * not there.
 381                  */
 382                 val = readl(usbmisc->base + data->index * 4);
 383                 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
 384                         usbmisc->base + data->index * 4);
 385                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 386         }
 387
 388         /* For HSIC controller */
 389         if (data->index == 2) {
 390                 spin_lock_irqsave(&usbmisc->lock, flags);
 391                 val = readl(usbmisc->base + data->index * 4);
 392                 writel(val | MX6_BM_UTMI_ON_CLOCK,
 393                         usbmisc->base + data->index * 4);
 394                 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
 395                                                 + (data->index - 2) * 4);
 396                 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON |
 397                                         MX6SX_BM_HSIC_AUTO_RESUME;
 398                 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
 399                                                 + (data->index - 2) * 4);
 400                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 401
 402                 /*
 403                  * Need to add delay to wait 24M OSC to be stable,
 404                  * it's board specific.
 405                  */
 406                 regmap_read(data->anatop, ANADIG_ANA_MISC0, &val);
 407                 /* 0 <= data->osc_clkgate_delay <= 7 */
 408                 if (data->osc_clkgate_delay > ANADIG_ANA_MISC0_CLK_DELAY(val))
 409                         regmap_write(data->anatop, ANADIG_ANA_MISC0_SET,
 410                                         (data->osc_clkgate_delay) << 26);
 411         }
 412
 413         return ret;
 414 }
 415
 416 static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
 417 {
 418         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 419         u32 reg;
 420
 421         /*
 422          * Vybrid only has one misc register set, but in two different
 423          * areas. These is reflected in two instances of this driver.
 424          */
 425         if (data->index >= 1)
 426                 return -EINVAL;
 427
 428         if (data->disable_oc) {
 429                 reg = readl(usbmisc->base);
 430                 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
 431         }
 432
 433         return 0;
 434 }
 435
 436 static int usbmisc_imx6sx_power_lost_check(struct imx_usbmisc_data *data)
 437 {
 438         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 439         unsigned long flags;
 440         u32 val;
 441
 442         spin_lock_irqsave(&usbmisc->lock, flags);
 443         val = readl(usbmisc->base + data->index * 4);
 444         spin_unlock_irqrestore(&usbmisc->lock, flags);
 445         /*
 446          * Here use a power on reset value to judge
 447          * if the controller experienced a power lost
 448          */
 449         if (val == 0x30001000)
 450                 return 1;
 451         else
 452                 return 0;
 453 }
 454
 455 static const struct usbmisc_ops imx25_usbmisc_ops = {
 456         .init = usbmisc_imx25_init,
 457         .post = usbmisc_imx25_post,
 458 };
 459
 460 static const struct usbmisc_ops imx27_usbmisc_ops = {
 461         .init = usbmisc_imx27_init,
 462 };
 463
 464 static const struct usbmisc_ops imx53_usbmisc_ops = {
 465         .init = usbmisc_imx53_init,
 466 };
 467
 468 static const struct usbmisc_ops imx6q_usbmisc_ops = {
 469         .set_wakeup = usbmisc_imx6q_set_wakeup,
 470         .init = usbmisc_imx6q_init,
 471         .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
 472         .hsic_set_clk   = usbmisc_imx6_hsic_set_clk,
 473 };
 474
 475 static const struct usbmisc_ops vf610_usbmisc_ops = {
 476         .init = usbmisc_vf610_init,
 477 };
 478
 479 static const struct usbmisc_ops imx6sx_usbmisc_ops = {
 480         .set_wakeup = usbmisc_imx6q_set_wakeup,
 481         .init = usbmisc_imx6sx_init,
 482         .power_lost_check = usbmisc_imx6sx_power_lost_check,
 483         .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
 484         .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
 485 };
 486
 487 int imx_usbmisc_init(struct imx_usbmisc_data *data)
 488 {
 489         struct imx_usbmisc *usbmisc;
 490
 491         if (!data)
 492                 return 0;
 493
 494         usbmisc = dev_get_drvdata(data->dev);
 495         if (!usbmisc->ops->init)
 496                 return 0;
 497         return usbmisc->ops->init(data);
 498 }
 499 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
 500
 501 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
 502 {
 503         struct imx_usbmisc *usbmisc;
 504
 505         if (!data)
 506                 return 0;
 507
 508         usbmisc = dev_get_drvdata(data->dev);
 509         if (!usbmisc->ops->post)
 510                 return 0;
 511         return usbmisc->ops->post(data);
 512 }
 513 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
 514
 515 int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
 516 {
 517         struct imx_usbmisc *usbmisc;
 518
 519         if (!data)
 520                 return 0;
 521
 522         usbmisc = dev_get_drvdata(data->dev);
 523         if (!usbmisc->ops->set_wakeup)
 524                 return 0;
 525         return usbmisc->ops->set_wakeup(data, enabled);
 526 }
 527 EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
 528
 529 int imx_usbmisc_power_lost_check(struct imx_usbmisc_data *data)
 530 {
 531         struct imx_usbmisc *usbmisc;
 532
 533         if (!data)
 534                 return 0;
 535
 536         usbmisc = dev_get_drvdata(data->dev);
 537         if (!usbmisc->ops->power_lost_check)
 538                 return 0;
 539         return usbmisc->ops->power_lost_check(data);
 540 }
 541 EXPORT_SYMBOL_GPL(imx_usbmisc_power_lost_check);
 542
 543 int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data)
 544 {
 545         struct imx_usbmisc *usbmisc;
 546
 547         if (!data)
 548                 return 0;
 549
 550         usbmisc = dev_get_drvdata(data->dev);
 551         if (!usbmisc->ops->hsic_set_connect)
 552                 return 0;
 553         return usbmisc->ops->hsic_set_connect(data);
 554 }
 555 EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect);
 556
 557 int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
 558 {
 559         struct imx_usbmisc *usbmisc;
 560
 561         if (!data)
 562                 return 0;
 563
 564         usbmisc = dev_get_drvdata(data->dev);
 565         if (!usbmisc->ops->hsic_set_clk)
 566                 return 0;
 567         return usbmisc->ops->hsic_set_clk(data, on);
 568 }
 569 EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_clk);
 570
 571 static const struct of_device_id usbmisc_imx_dt_ids[] = {
 572         {
 573                 .compatible = "fsl,imx25-usbmisc",
 574                 .data = &imx25_usbmisc_ops,
 575         },
 576         {
 577                 .compatible = "fsl,imx35-usbmisc",
 578                 .data = &imx25_usbmisc_ops,
 579         },
 580         {
 581                 .compatible = "fsl,imx27-usbmisc",
 582                 .data = &imx27_usbmisc_ops,
 583         },
 584         {
 585                 .compatible = "fsl,imx51-usbmisc",
 586                 .data = &imx53_usbmisc_ops,
 587         },
 588         {
 589                 .compatible = "fsl,imx53-usbmisc",
 590                 .data = &imx53_usbmisc_ops,
 591         },
 592         {
 593                 .compatible = "fsl,imx6q-usbmisc",
 594                 .data = &imx6q_usbmisc_ops,
 595         },
 596         {
 597                 .compatible = "fsl,vf610-usbmisc",
 598                 .data = &vf610_usbmisc_ops,
 599         },
 600         {
 601                 .compatible = "fsl,imx6sx-usbmisc",
 602                 .data = &imx6sx_usbmisc_ops,
 603         },
 604         { /* sentinel */ }
 605 };
 606 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
 607
 608 static int usbmisc_imx_probe(struct platform_device *pdev)
 609 {
 610         struct resource *res;
 611         struct imx_usbmisc *data;
 612         struct of_device_id *tmp_dev;
 613
 614         data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 615         if (!data)
 616                 return -ENOMEM;
 617
 618         spin_lock_init(&data->lock);
 619
 620         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 621         data->base = devm_ioremap_resource(&pdev->dev, res);
 622         if (IS_ERR(data->base))
 623                 return PTR_ERR(data->base);
 624
 625         tmp_dev = (struct of_device_id *)
 626                 of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
 627         data->ops = (const struct usbmisc_ops *)tmp_dev->data;
 628         platform_set_drvdata(pdev, data);
 629
 630         vbus_wakeup_reg = devm_regulator_get(&pdev->dev, "vbus-wakeup");
 631         if (PTR_ERR(vbus_wakeup_reg) == -EPROBE_DEFER)
 632                 return -EPROBE_DEFER;
 633         else if (PTR_ERR(vbus_wakeup_reg) == -ENODEV)
 634                 /* no vbus regualator is needed */
 635                 vbus_wakeup_reg = NULL;
 636         else if (IS_ERR(vbus_wakeup_reg)) {
 637                 dev_err(&pdev->dev, "Getting regulator error: %ld\n",
 638                         PTR_ERR(vbus_wakeup_reg));
 639                 return PTR_ERR(vbus_wakeup_reg);
 640         }
 641
 642         return 0;
 643 }
 644
 645 static int usbmisc_imx_remove(struct platform_device *pdev)
 646 {
 647         return 0;
 648 }
 649
 650 static struct platform_driver usbmisc_imx_driver = {
 651         .probe = usbmisc_imx_probe,
 652         .remove = usbmisc_imx_remove,
 653         .driver = {
 654                 .name = "usbmisc_imx",
 655                 .owner = THIS_MODULE,
 656                 .of_match_table = usbmisc_imx_dt_ids,
 657          },
 658 };
 659
 660 module_platform_driver(usbmisc_imx_driver);
 661
 662 MODULE_ALIAS("platform:usbmisc-imx");
 663 MODULE_LICENSE("GPL v2");
 664 MODULE_DESCRIPTION("driver for imx usb non-core registers");
 665 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");