drivers/usb/chipidea/usbmisc_imx.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2012 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/of_platform.h>
   8 #include <linux/err.h>
   9 #include <linux/io.h>
  10 #include <linux/delay.h>
  11
  12 #include "ci_hdrc_imx.h"
  13
  14 #define MX25_USB_PHY_CTRL_OFFSET        0x08
  15 #define MX25_BM_EXTERNAL_VBUS_DIVIDER   BIT(23)
  16
  17 #define MX25_EHCI_INTERFACE_SINGLE_UNI  (2 << 0)
  18 #define MX25_EHCI_INTERFACE_DIFF_UNI    (0 << 0)
  19 #define MX25_EHCI_INTERFACE_MASK        (0xf)
  20
  21 #define MX25_OTG_SIC_SHIFT              29
  22 #define MX25_OTG_SIC_MASK               (0x3 << MX25_OTG_SIC_SHIFT)
  23 #define MX25_OTG_PM_BIT                 BIT(24)
  24 #define MX25_OTG_PP_BIT                 BIT(11)
  25 #define MX25_OTG_OCPOL_BIT              BIT(3)
  26
  27 #define MX25_H1_SIC_SHIFT               21
  28 #define MX25_H1_SIC_MASK                (0x3 << MX25_H1_SIC_SHIFT)
  29 #define MX25_H1_PP_BIT                  BIT(18)
  30 #define MX25_H1_PM_BIT                  BIT(16)
  31 #define MX25_H1_IPPUE_UP_BIT            BIT(7)
  32 #define MX25_H1_IPPUE_DOWN_BIT          BIT(6)
  33 #define MX25_H1_TLL_BIT                 BIT(5)
  34 #define MX25_H1_USBTE_BIT               BIT(4)
  35 #define MX25_H1_OCPOL_BIT               BIT(2)
  36
  37 #define MX27_H1_PM_BIT                  BIT(8)
  38 #define MX27_H2_PM_BIT                  BIT(16)
  39 #define MX27_OTG_PM_BIT                 BIT(24)
  40
  41 #define MX53_USB_OTG_PHY_CTRL_0_OFFSET  0x08
  42 #define MX53_USB_OTG_PHY_CTRL_1_OFFSET  0x0c
  43 #define MX53_USB_CTRL_1_OFFSET          0x10
  44 #define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK (0x11 << 2)
  45 #define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI BIT(2)
  46 #define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK (0x11 << 6)
  47 #define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
  48 #define MX53_USB_UH2_CTRL_OFFSET        0x14
  49 #define MX53_USB_UH3_CTRL_OFFSET        0x18
  50 #define MX53_USB_CLKONOFF_CTRL_OFFSET   0x24
  51 #define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21)
  52 #define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22)
  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_CTRL_1_UH2_ULPI_EN     BIT(26)
  57 #define MX53_USB_CTRL_1_UH3_ULPI_EN     BIT(27)
  58 #define MX53_USB_UHx_CTRL_WAKE_UP_EN    BIT(7)
  59 #define MX53_USB_UHx_CTRL_ULPI_INT_EN   BIT(8)
  60 #define MX53_USB_PHYCTRL1_PLLDIV_MASK   0x3
  61 #define MX53_USB_PLL_DIV_24_MHZ         0x01
  62
  63 #define MX6_BM_NON_BURST_SETTING        BIT(1)
  64 #define MX6_BM_OVER_CUR_DIS             BIT(7)
  65 #define MX6_BM_OVER_CUR_POLARITY        BIT(8)
  66 #define MX6_BM_WAKEUP_ENABLE            BIT(10)
  67 #define MX6_BM_ID_WAKEUP                BIT(16)
  68 #define MX6_BM_VBUS_WAKEUP              BIT(17)
  69 #define MX6SX_BM_DPDM_WAKEUP_EN         BIT(29)
  70 #define MX6_BM_WAKEUP_INTR              BIT(31)
  71 #define MX6_USB_OTG1_PHY_CTRL           0x18
  72 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */
  73 #define MX6_USB_OTG2_PHY_CTRL           0x1c
  74 #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
  75 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS       MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
  76 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID     MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
  77 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID     MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
  78 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END   MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
  79
  80 #define VF610_OVER_CUR_DIS              BIT(7)
  81
  82 #define MX7D_USBNC_USB_CTRL2            0x4
  83 #define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK        0x3
  84 #define MX7D_USB_VBUS_WAKEUP_SOURCE(v)          (v << 0)
  85 #define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS        MX7D_USB_VBUS_WAKEUP_SOURCE(0)
  86 #define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID      MX7D_USB_VBUS_WAKEUP_SOURCE(1)
  87 #define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID      MX7D_USB_VBUS_WAKEUP_SOURCE(2)
  88 #define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END    MX7D_USB_VBUS_WAKEUP_SOURCE(3)
  89
  90 struct usbmisc_ops {
  91         /* It's called once when probe a usb device */
  92         int (*init)(struct imx_usbmisc_data *data);
  93         /* It's called once after adding a usb device */
  94         int (*post)(struct imx_usbmisc_data *data);
  95         /* It's called when we need to enable/disable usb wakeup */
  96         int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
  97 };
  98
  99 struct imx_usbmisc {
 100         void __iomem *base;
 101         spinlock_t lock;
 102         const struct usbmisc_ops *ops;
 103 };
 104
 105 static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
 106
 107 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
 108 {
 109         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 110         unsigned long flags;
 111         u32 val = 0;
 112
 113         if (data->index > 1)
 114                 return -EINVAL;
 115
 116         spin_lock_irqsave(&usbmisc->lock, flags);
 117         switch (data->index) {
 118         case 0:
 119                 val = readl(usbmisc->base);
 120                 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
 121                 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
 122                 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
 123                 writel(val, usbmisc->base);
 124                 break;
 125         case 1:
 126                 val = readl(usbmisc->base);
 127                 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT |  MX25_H1_IPPUE_UP_BIT);
 128                 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
 129                 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
 130                         MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
 131
 132                 writel(val, usbmisc->base);
 133
 134                 break;
 135         }
 136         spin_unlock_irqrestore(&usbmisc->lock, flags);
 137
 138         return 0;
 139 }
 140
 141 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
 142 {
 143         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 144         void __iomem *reg;
 145         unsigned long flags;
 146         u32 val;
 147
 148         if (data->index > 2)
 149                 return -EINVAL;
 150
 151         if (data->evdo) {
 152                 spin_lock_irqsave(&usbmisc->lock, flags);
 153                 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
 154                 val = readl(reg);
 155                 writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
 156                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 157                 usleep_range(5000, 10000); /* needed to stabilize voltage */
 158         }
 159
 160         return 0;
 161 }
 162
 163 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
 164 {
 165         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 166         unsigned long flags;
 167         u32 val;
 168
 169         switch (data->index) {
 170         case 0:
 171                 val = MX27_OTG_PM_BIT;
 172                 break;
 173         case 1:
 174                 val = MX27_H1_PM_BIT;
 175                 break;
 176         case 2:
 177                 val = MX27_H2_PM_BIT;
 178                 break;
 179         default:
 180                 return -EINVAL;
 181         }
 182
 183         spin_lock_irqsave(&usbmisc->lock, flags);
 184         if (data->disable_oc)
 185                 val = readl(usbmisc->base) | val;
 186         else
 187                 val = readl(usbmisc->base) & ~val;
 188         writel(val, usbmisc->base);
 189         spin_unlock_irqrestore(&usbmisc->lock, flags);
 190
 191         return 0;
 192 }
 193
 194 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
 195 {
 196         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 197         void __iomem *reg = NULL;
 198         unsigned long flags;
 199         u32 val = 0;
 200
 201         if (data->index > 3)
 202                 return -EINVAL;
 203
 204         /* Select a 24 MHz reference clock for the PHY  */
 205         val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
 206         val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
 207         val |= MX53_USB_PLL_DIV_24_MHZ;
 208         writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
 209
 210         spin_lock_irqsave(&usbmisc->lock, flags);
 211
 212         switch (data->index) {
 213         case 0:
 214                 if (data->disable_oc) {
 215                         reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
 216                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
 217                         writel(val, reg);
 218                 }
 219                 break;
 220         case 1:
 221                 if (data->disable_oc) {
 222                         reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
 223                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
 224                         writel(val, reg);
 225                 }
 226                 break;
 227         case 2:
 228                 if (data->ulpi) {
 229                         /* set USBH2 into ULPI-mode. */
 230                         reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
 231                         val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
 232                         /* select ULPI clock */
 233                         val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
 234                         val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
 235                         writel(val, reg);
 236                         /* Set interrupt wake up enable */
 237                         reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
 238                         val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
 239                                 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
 240                         writel(val, reg);
 241                         if (is_imx53_usbmisc(data)) {
 242                                 /* Disable internal 60Mhz clock */
 243                                 reg = usbmisc->base +
 244                                         MX53_USB_CLKONOFF_CTRL_OFFSET;
 245                                 val = readl(reg) |
 246                                         MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
 247                                 writel(val, reg);
 248                         }
 249
 250                 }
 251                 if (data->disable_oc) {
 252                         reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
 253                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
 254                         writel(val, reg);
 255                 }
 256                 break;
 257         case 3:
 258                 if (data->ulpi) {
 259                         /* set USBH3 into ULPI-mode. */
 260                         reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
 261                         val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
 262                         /* select ULPI clock */
 263                         val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
 264                         val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
 265                         writel(val, reg);
 266                         /* Set interrupt wake up enable */
 267                         reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
 268                         val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
 269                                 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
 270                         writel(val, reg);
 271
 272                         if (is_imx53_usbmisc(data)) {
 273                                 /* Disable internal 60Mhz clock */
 274                                 reg = usbmisc->base +
 275                                         MX53_USB_CLKONOFF_CTRL_OFFSET;
 276                                 val = readl(reg) |
 277                                         MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
 278                                 writel(val, reg);
 279                         }
 280                 }
 281                 if (data->disable_oc) {
 282                         reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
 283                         val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
 284                         writel(val, reg);
 285                 }
 286                 break;
 287         }
 288
 289         spin_unlock_irqrestore(&usbmisc->lock, flags);
 290
 291         return 0;
 292 }
 293
 294 static int usbmisc_imx6q_set_wakeup
 295         (struct imx_usbmisc_data *data, bool enabled)
 296 {
 297         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 298         unsigned long flags;
 299         u32 val;
 300         u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
 301                 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
 302         int ret = 0;
 303
 304         if (data->index > 3)
 305                 return -EINVAL;
 306
 307         spin_lock_irqsave(&usbmisc->lock, flags);
 308         val = readl(usbmisc->base + data->index * 4);
 309         if (enabled) {
 310                 val |= wakeup_setting;
 311                 writel(val, usbmisc->base + data->index * 4);
 312         } else {
 313                 if (val & MX6_BM_WAKEUP_INTR)
 314                         pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
 315                 val &= ~wakeup_setting;
 316                 writel(val, usbmisc->base + data->index * 4);
 317         }
 318         spin_unlock_irqrestore(&usbmisc->lock, flags);
 319
 320         return ret;
 321 }
 322
 323 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
 324 {
 325         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 326         unsigned long flags;
 327         u32 reg;
 328
 329         if (data->index > 3)
 330                 return -EINVAL;
 331
 332         spin_lock_irqsave(&usbmisc->lock, flags);
 333
 334         reg = readl(usbmisc->base + data->index * 4);
 335         if (data->disable_oc) {
 336                 reg |= MX6_BM_OVER_CUR_DIS;
 337         } else if (data->oc_polarity == 1) {
 338                 /* High active */
 339                 reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
 340         }
 341         writel(reg, usbmisc->base + data->index * 4);
 342
 343         /* SoC non-burst setting */
 344         reg = readl(usbmisc->base + data->index * 4);
 345         writel(reg | MX6_BM_NON_BURST_SETTING,
 346                         usbmisc->base + data->index * 4);
 347
 348         spin_unlock_irqrestore(&usbmisc->lock, flags);
 349
 350         usbmisc_imx6q_set_wakeup(data, false);
 351
 352         return 0;
 353 }
 354
 355 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
 356 {
 357         void __iomem *reg = NULL;
 358         unsigned long flags;
 359         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 360         u32 val;
 361
 362         usbmisc_imx6q_init(data);
 363
 364         if (data->index == 0 || data->index == 1) {
 365                 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
 366                 spin_lock_irqsave(&usbmisc->lock, flags);
 367                 /* Set vbus wakeup source as bvalid */
 368                 val = readl(reg);
 369                 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
 370                 /*
 371                  * Disable dp/dm wakeup in device mode when vbus is
 372                  * not there.
 373                  */
 374                 val = readl(usbmisc->base + data->index * 4);
 375                 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
 376                         usbmisc->base + data->index * 4);
 377                 spin_unlock_irqrestore(&usbmisc->lock, flags);
 378         }
 379
 380         return 0;
 381 }
 382
 383 static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
 384 {
 385         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 386         u32 reg;
 387
 388         /*
 389          * Vybrid only has one misc register set, but in two different
 390          * areas. These is reflected in two instances of this driver.
 391          */
 392         if (data->index >= 1)
 393                 return -EINVAL;
 394
 395         if (data->disable_oc) {
 396                 reg = readl(usbmisc->base);
 397                 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
 398         }
 399
 400         return 0;
 401 }
 402
 403 static int usbmisc_imx7d_set_wakeup
 404         (struct imx_usbmisc_data *data, bool enabled)
 405 {
 406         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 407         unsigned long flags;
 408         u32 val;
 409         u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
 410                 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
 411
 412         spin_lock_irqsave(&usbmisc->lock, flags);
 413         val = readl(usbmisc->base);
 414         if (enabled) {
 415                 writel(val | wakeup_setting, usbmisc->base);
 416         } else {
 417                 if (val & MX6_BM_WAKEUP_INTR)
 418                         dev_dbg(data->dev, "wakeup int\n");
 419                 writel(val & ~wakeup_setting, usbmisc->base);
 420         }
 421         spin_unlock_irqrestore(&usbmisc->lock, flags);
 422
 423         return 0;
 424 }
 425
 426 static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
 427 {
 428         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 429         unsigned long flags;
 430         u32 reg;
 431
 432         if (data->index >= 1)
 433                 return -EINVAL;
 434
 435         spin_lock_irqsave(&usbmisc->lock, flags);
 436         reg = readl(usbmisc->base);
 437         if (data->disable_oc) {
 438                 reg |= MX6_BM_OVER_CUR_DIS;
 439         } else if (data->oc_polarity == 1) {
 440                 /* High active */
 441                 reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
 442         }
 443         writel(reg, usbmisc->base);
 444
 445         reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
 446         reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
 447         writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
 448                  usbmisc->base + MX7D_USBNC_USB_CTRL2);
 449         spin_unlock_irqrestore(&usbmisc->lock, flags);
 450
 451         usbmisc_imx7d_set_wakeup(data, false);
 452
 453         return 0;
 454 }
 455
 456 static const struct usbmisc_ops imx25_usbmisc_ops = {
 457         .init = usbmisc_imx25_init,
 458         .post = usbmisc_imx25_post,
 459 };
 460
 461 static const struct usbmisc_ops imx27_usbmisc_ops = {
 462         .init = usbmisc_imx27_init,
 463 };
 464
 465 static const struct usbmisc_ops imx51_usbmisc_ops = {
 466         .init = usbmisc_imx53_init,
 467 };
 468
 469 static const struct usbmisc_ops imx53_usbmisc_ops = {
 470         .init = usbmisc_imx53_init,
 471 };
 472
 473 static const struct usbmisc_ops imx6q_usbmisc_ops = {
 474         .set_wakeup = usbmisc_imx6q_set_wakeup,
 475         .init = usbmisc_imx6q_init,
 476 };
 477
 478 static const struct usbmisc_ops vf610_usbmisc_ops = {
 479         .init = usbmisc_vf610_init,
 480 };
 481
 482 static const struct usbmisc_ops imx6sx_usbmisc_ops = {
 483         .set_wakeup = usbmisc_imx6q_set_wakeup,
 484         .init = usbmisc_imx6sx_init,
 485 };
 486
 487 static const struct usbmisc_ops imx7d_usbmisc_ops = {
 488         .init = usbmisc_imx7d_init,
 489         .set_wakeup = usbmisc_imx7d_set_wakeup,
 490 };
 491
 492 static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
 493 {
 494         struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 495
 496         return usbmisc->ops == &imx53_usbmisc_ops;
 497 }
 498
 499 int imx_usbmisc_init(struct imx_usbmisc_data *data)
 500 {
 501         struct imx_usbmisc *usbmisc;
 502
 503         if (!data)
 504                 return 0;
 505
 506         usbmisc = dev_get_drvdata(data->dev);
 507         if (!usbmisc->ops->init)
 508                 return 0;
 509         return usbmisc->ops->init(data);
 510 }
 511 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
 512
 513 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
 514 {
 515         struct imx_usbmisc *usbmisc;
 516
 517         if (!data)
 518                 return 0;
 519
 520         usbmisc = dev_get_drvdata(data->dev);
 521         if (!usbmisc->ops->post)
 522                 return 0;
 523         return usbmisc->ops->post(data);
 524 }
 525 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
 526
 527 int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
 528 {
 529         struct imx_usbmisc *usbmisc;
 530
 531         if (!data)
 532                 return 0;
 533
 534         usbmisc = dev_get_drvdata(data->dev);
 535         if (!usbmisc->ops->set_wakeup)
 536                 return 0;
 537         return usbmisc->ops->set_wakeup(data, enabled);
 538 }
 539 EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
 540
 541 static const struct of_device_id usbmisc_imx_dt_ids[] = {
 542         {
 543                 .compatible = "fsl,imx25-usbmisc",
 544                 .data = &imx25_usbmisc_ops,
 545         },
 546         {
 547                 .compatible = "fsl,imx35-usbmisc",
 548                 .data = &imx25_usbmisc_ops,
 549         },
 550         {
 551                 .compatible = "fsl,imx27-usbmisc",
 552                 .data = &imx27_usbmisc_ops,
 553         },
 554         {
 555                 .compatible = "fsl,imx51-usbmisc",
 556                 .data = &imx51_usbmisc_ops,
 557         },
 558         {
 559                 .compatible = "fsl,imx53-usbmisc",
 560                 .data = &imx53_usbmisc_ops,
 561         },
 562         {
 563                 .compatible = "fsl,imx6q-usbmisc",
 564                 .data = &imx6q_usbmisc_ops,
 565         },
 566         {
 567                 .compatible = "fsl,vf610-usbmisc",
 568                 .data = &vf610_usbmisc_ops,
 569         },
 570         {
 571                 .compatible = "fsl,imx6sx-usbmisc",
 572                 .data = &imx6sx_usbmisc_ops,
 573         },
 574         {
 575                 .compatible = "fsl,imx6ul-usbmisc",
 576                 .data = &imx6sx_usbmisc_ops,
 577         },
 578         {
 579                 .compatible = "fsl,imx7d-usbmisc",
 580                 .data = &imx7d_usbmisc_ops,
 581         },
 582         { /* sentinel */ }
 583 };
 584 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
 585
 586 static int usbmisc_imx_probe(struct platform_device *pdev)
 587 {
 588         struct resource *res;
 589         struct imx_usbmisc *data;
 590         const struct of_device_id *of_id;
 591
 592         of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
 593         if (!of_id)
 594                 return -ENODEV;
 595
 596         data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 597         if (!data)
 598                 return -ENOMEM;
 599
 600         spin_lock_init(&data->lock);
 601
 602         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 603         data->base = devm_ioremap_resource(&pdev->dev, res);
 604         if (IS_ERR(data->base))
 605                 return PTR_ERR(data->base);
 606
 607         data->ops = (const struct usbmisc_ops *)of_id->data;
 608         platform_set_drvdata(pdev, data);
 609
 610         return 0;
 611 }
 612
 613 static int usbmisc_imx_remove(struct platform_device *pdev)
 614 {
 615         return 0;
 616 }
 617
 618 static struct platform_driver usbmisc_imx_driver = {
 619         .probe = usbmisc_imx_probe,
 620         .remove = usbmisc_imx_remove,
 621         .driver = {
 622                 .name = "usbmisc_imx",
 623                 .of_match_table = usbmisc_imx_dt_ids,
 624          },
 625 };
 626
 627 module_platform_driver(usbmisc_imx_driver);
 628
 629 MODULE_ALIAS("platform:usbmisc-imx");
 630 MODULE_LICENSE("GPL v2");
 631 MODULE_DESCRIPTION("driver for imx usb non-core registers");
 632 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");