drivers/mfd/omap-usb-host.c

   1 /**
   2  * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI
   3  *
   4  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
   5  * Author: Keshava Munegowda <keshava_mgowda@ti.com>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2  of
   9  * the License as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #include <linux/kernel.h>
  20 #include <linux/types.h>
  21 #include <linux/slab.h>
  22 #include <linux/delay.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/clk.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/gpio.h>
  28 #include <linux/regulator/consumer.h>
  29 #include <plat/usb.h>
  30
  31 #define USBHS_DRIVER_NAME       "usbhs-omap"
  32 #define OMAP_EHCI_DEVICE        "ehci-omap"
  33 #define OMAP_OHCI_DEVICE        "ohci-omap3"
  34
  35 /* OMAP USBHOST Register addresses  */
  36
  37 /* TLL Register Set */
  38 #define OMAP_USBTLL_REVISION                            (0x00)
  39 #define OMAP_USBTLL_SYSCONFIG                           (0x10)
  40 #define OMAP_USBTLL_SYSCONFIG_CACTIVITY                 (1 << 8)
  41 #define OMAP_USBTLL_SYSCONFIG_SIDLEMODE                 (1 << 3)
  42 #define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP                 (1 << 2)
  43 #define OMAP_USBTLL_SYSCONFIG_SOFTRESET                 (1 << 1)
  44 #define OMAP_USBTLL_SYSCONFIG_AUTOIDLE                  (1 << 0)
  45
  46 #define OMAP_USBTLL_SYSSTATUS                           (0x14)
  47 #define OMAP_USBTLL_SYSSTATUS_RESETDONE                 (1 << 0)
  48
  49 #define OMAP_USBTLL_IRQSTATUS                           (0x18)
  50 #define OMAP_USBTLL_IRQENABLE                           (0x1C)
  51
  52 #define OMAP_TLL_SHARED_CONF                            (0x30)
  53 #define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN             (1 << 6)
  54 #define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN            (1 << 5)
  55 #define OMAP_TLL_SHARED_CONF_USB_DIVRATION              (1 << 2)
  56 #define OMAP_TLL_SHARED_CONF_FCLK_REQ                   (1 << 1)
  57 #define OMAP_TLL_SHARED_CONF_FCLK_IS_ON                 (1 << 0)
  58
  59 #define OMAP_TLL_CHANNEL_CONF(num)                      (0x040 + 0x004 * num)
  60 #define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT            24
  61 #define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF            (1 << 11)
  62 #define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE         (1 << 10)
  63 #define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE              (1 << 9)
  64 #define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE               (1 << 8)
  65 #define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS             (1 << 1)
  66 #define OMAP_TLL_CHANNEL_CONF_CHANEN                    (1 << 0)
  67
  68 #define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0              0x0
  69 #define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM                0x1
  70 #define OMAP_TLL_FSLSMODE_3PIN_PHY                      0x2
  71 #define OMAP_TLL_FSLSMODE_4PIN_PHY                      0x3
  72 #define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0              0x4
  73 #define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM                0x5
  74 #define OMAP_TLL_FSLSMODE_3PIN_TLL                      0x6
  75 #define OMAP_TLL_FSLSMODE_4PIN_TLL                      0x7
  76 #define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0              0xA
  77 #define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM                0xB
  78
  79 #define OMAP_TLL_ULPI_FUNCTION_CTRL(num)                (0x804 + 0x100 * num)
  80 #define OMAP_TLL_ULPI_INTERFACE_CTRL(num)               (0x807 + 0x100 * num)
  81 #define OMAP_TLL_ULPI_OTG_CTRL(num)                     (0x80A + 0x100 * num)
  82 #define OMAP_TLL_ULPI_INT_EN_RISE(num)                  (0x80D + 0x100 * num)
  83 #define OMAP_TLL_ULPI_INT_EN_FALL(num)                  (0x810 + 0x100 * num)
  84 #define OMAP_TLL_ULPI_INT_STATUS(num)                   (0x813 + 0x100 * num)
  85 #define OMAP_TLL_ULPI_INT_LATCH(num)                    (0x814 + 0x100 * num)
  86 #define OMAP_TLL_ULPI_DEBUG(num)                        (0x815 + 0x100 * num)
  87 #define OMAP_TLL_ULPI_SCRATCH_REGISTER(num)             (0x816 + 0x100 * num)
  88
  89 #define OMAP_TLL_CHANNEL_COUNT                          3
  90 #define OMAP_TLL_CHANNEL_1_EN_MASK                      (1 << 0)
  91 #define OMAP_TLL_CHANNEL_2_EN_MASK                      (1 << 1)
  92 #define OMAP_TLL_CHANNEL_3_EN_MASK                      (1 << 2)
  93
  94 /* UHH Register Set */
  95 #define OMAP_UHH_REVISION                               (0x00)
  96 #define OMAP_UHH_SYSCONFIG                              (0x10)
  97 #define OMAP_UHH_SYSCONFIG_MIDLEMODE                    (1 << 12)
  98 #define OMAP_UHH_SYSCONFIG_CACTIVITY                    (1 << 8)
  99 #define OMAP_UHH_SYSCONFIG_SIDLEMODE                    (1 << 3)
 100 #define OMAP_UHH_SYSCONFIG_ENAWAKEUP                    (1 << 2)
 101 #define OMAP_UHH_SYSCONFIG_SOFTRESET                    (1 << 1)
 102 #define OMAP_UHH_SYSCONFIG_AUTOIDLE                     (1 << 0)
 103
 104 #define OMAP_UHH_SYSSTATUS                              (0x14)
 105 #define OMAP_UHH_HOSTCONFIG                             (0x40)
 106 #define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS                 (1 << 0)
 107 #define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS              (1 << 0)
 108 #define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS              (1 << 11)
 109 #define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS              (1 << 12)
 110 #define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN              (1 << 2)
 111 #define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN              (1 << 3)
 112 #define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN             (1 << 4)
 113 #define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN              (1 << 5)
 114 #define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS           (1 << 8)
 115 #define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS           (1 << 9)
 116 #define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS           (1 << 10)
 117 #define OMAP4_UHH_HOSTCONFIG_APP_START_CLK              (1 << 31)
 118
 119 /* OMAP4-specific defines */
 120 #define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR              (3 << 2)
 121 #define OMAP4_UHH_SYSCONFIG_NOIDLE                      (1 << 2)
 122 #define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR             (3 << 4)
 123 #define OMAP4_UHH_SYSCONFIG_NOSTDBY                     (1 << 4)
 124 #define OMAP4_UHH_SYSCONFIG_SOFTRESET                   (1 << 0)
 125
 126 #define OMAP4_P1_MODE_CLEAR                             (3 << 16)
 127 #define OMAP4_P1_MODE_TLL                               (1 << 16)
 128 #define OMAP4_P1_MODE_HSIC                              (3 << 16)
 129 #define OMAP4_P2_MODE_CLEAR                             (3 << 18)
 130 #define OMAP4_P2_MODE_TLL                               (1 << 18)
 131 #define OMAP4_P2_MODE_HSIC                              (3 << 18)
 132
 133 #define OMAP_REV2_TLL_CHANNEL_COUNT                     2
 134
 135 #define OMAP_UHH_DEBUG_CSR                              (0x44)
 136
 137 /* Values of UHH_REVISION - Note: these are not given in the TRM */
 138 #define OMAP_USBHS_REV1         0x00000010      /* OMAP3 */
 139 #define OMAP_USBHS_REV2         0x50700100      /* OMAP4 */
 140
 141 #define is_omap_usbhs_rev1(x)   (x->usbhs_rev == OMAP_USBHS_REV1)
 142 #define is_omap_usbhs_rev2(x)   (x->usbhs_rev == OMAP_USBHS_REV2)
 143
 144 #define is_ehci_phy_mode(x)     (x == OMAP_EHCI_PORT_MODE_PHY)
 145 #define is_ehci_tll_mode(x)     (x == OMAP_EHCI_PORT_MODE_TLL)
 146 #define is_ehci_hsic_mode(x)    (x == OMAP_EHCI_PORT_MODE_HSIC)
 147
 148
 149 struct usbhs_hcd_omap {
 150         struct clk                      *usbhost_ick;
 151         struct clk                      *usbhost_hs_fck;
 152         struct clk                      *usbhost_fs_fck;
 153         struct clk                      *xclk60mhsp1_ck;
 154         struct clk                      *xclk60mhsp2_ck;
 155         struct clk                      *utmi_p1_fck;
 156         struct clk                      *usbhost_p1_fck;
 157         struct clk                      *usbtll_p1_fck;
 158         struct clk                      *utmi_p2_fck;
 159         struct clk                      *usbhost_p2_fck;
 160         struct clk                      *usbtll_p2_fck;
 161         struct clk                      *init_60m_fclk;
 162         struct clk                      *usbtll_fck;
 163         struct clk                      *usbtll_ick;
 164
 165         void __iomem                    *uhh_base;
 166         void __iomem                    *tll_base;
 167
 168         struct usbhs_omap_platform_data platdata;
 169
 170         u32                             usbhs_rev;
 171         spinlock_t                      lock;
 172         int                             count;
 173 };
 174 /*-------------------------------------------------------------------------*/
 175
 176 const char usbhs_driver_name[] = USBHS_DRIVER_NAME;
 177 static u64 usbhs_dmamask = ~(u32)0;
 178
 179 /*-------------------------------------------------------------------------*/
 180
 181 static inline void usbhs_write(void __iomem *base, u32 reg, u32 val)
 182 {
 183         __raw_writel(val, base + reg);
 184 }
 185
 186 static inline u32 usbhs_read(void __iomem *base, u32 reg)
 187 {
 188         return __raw_readl(base + reg);
 189 }
 190
 191 static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val)
 192 {
 193         __raw_writeb(val, base + reg);
 194 }
 195
 196 static inline u8 usbhs_readb(void __iomem *base, u8 reg)
 197 {
 198         return __raw_readb(base + reg);
 199 }
 200
 201 /*-------------------------------------------------------------------------*/
 202
 203 static struct platform_device *omap_usbhs_alloc_child(const char *name,
 204                         struct resource *res, int num_resources, void *pdata,
 205                         size_t pdata_size, struct device *dev)
 206 {
 207         struct platform_device  *child;
 208         int                     ret;
 209
 210         child = platform_device_alloc(name, 0);
 211
 212         if (!child) {
 213                 dev_err(dev, "platform_device_alloc %s failed\n", name);
 214                 goto err_end;
 215         }
 216
 217         ret = platform_device_add_resources(child, res, num_resources);
 218         if (ret) {
 219                 dev_err(dev, "platform_device_add_resources failed\n");
 220                 goto err_alloc;
 221         }
 222
 223         ret = platform_device_add_data(child, pdata, pdata_size);
 224         if (ret) {
 225                 dev_err(dev, "platform_device_add_data failed\n");
 226                 goto err_alloc;
 227         }
 228
 229         child->dev.dma_mask             = &usbhs_dmamask;
 230         child->dev.coherent_dma_mask    = 0xffffffff;
 231         child->dev.parent               = dev;
 232
 233         ret = platform_device_add(child);
 234         if (ret) {
 235                 dev_err(dev, "platform_device_add failed\n");
 236                 goto err_alloc;
 237         }
 238
 239         return child;
 240
 241 err_alloc:
 242         platform_device_put(child);
 243
 244 err_end:
 245         return NULL;
 246 }
 247
 248 static int omap_usbhs_alloc_children(struct platform_device *pdev)
 249 {
 250         struct device                           *dev = &pdev->dev;
 251         struct usbhs_hcd_omap                   *omap;
 252         struct ehci_hcd_omap_platform_data      *ehci_data;
 253         struct ohci_hcd_omap_platform_data      *ohci_data;
 254         struct platform_device                  *ehci;
 255         struct platform_device                  *ohci;
 256         struct resource                         *res;
 257         struct resource                         resources[2];
 258         int                                     ret;
 259
 260         omap = platform_get_drvdata(pdev);
 261         ehci_data = omap->platdata.ehci_data;
 262         ohci_data = omap->platdata.ohci_data;
 263
 264         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci");
 265         if (!res) {
 266                 dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n");
 267                 ret = -ENODEV;
 268                 goto err_end;
 269         }
 270         resources[0] = *res;
 271
 272         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq");
 273         if (!res) {
 274                 dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed\n");
 275                 ret = -ENODEV;
 276                 goto err_end;
 277         }
 278         resources[1] = *res;
 279
 280         ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data,
 281                 sizeof(*ehci_data), dev);
 282
 283         if (!ehci) {
 284                 dev_err(dev, "omap_usbhs_alloc_child failed\n");
 285                 goto err_end;
 286         }
 287
 288         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci");
 289         if (!res) {
 290                 dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n");
 291                 ret = -ENODEV;
 292                 goto err_ehci;
 293         }
 294         resources[0] = *res;
 295
 296         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq");
 297         if (!res) {
 298                 dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed\n");
 299                 ret = -ENODEV;
 300                 goto err_ehci;
 301         }
 302         resources[1] = *res;
 303
 304         ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data,
 305                 sizeof(*ohci_data), dev);
 306         if (!ohci) {
 307                 dev_err(dev, "omap_usbhs_alloc_child failed\n");
 308                 goto err_ehci;
 309         }
 310
 311         return 0;
 312
 313 err_ehci:
 314         platform_device_put(ehci);
 315
 316 err_end:
 317         return ret;
 318 }
 319
 320 /**
 321  * usbhs_omap_probe - initialize TI-based HCDs
 322  *
 323  * Allocates basic resources for this USB host controller.
 324  */
 325 static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 326 {
 327         struct device                   *dev =  &pdev->dev;
 328         struct usbhs_omap_platform_data *pdata = dev->platform_data;
 329         struct usbhs_hcd_omap           *omap;
 330         struct resource                 *res;
 331         int                             ret = 0;
 332         int                             i;
 333
 334         if (!pdata) {
 335                 dev_err(dev, "Missing platform data\n");
 336                 ret = -ENOMEM;
 337                 goto end_probe;
 338         }
 339
 340         omap = kzalloc(sizeof(*omap), GFP_KERNEL);
 341         if (!omap) {
 342                 dev_err(dev, "Memory allocation failed\n");
 343                 ret = -ENOMEM;
 344                 goto end_probe;
 345         }
 346
 347         spin_lock_init(&omap->lock);
 348
 349         for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
 350                 omap->platdata.port_mode[i] = pdata->port_mode[i];
 351
 352         omap->platdata.ehci_data = pdata->ehci_data;
 353         omap->platdata.ohci_data = pdata->ohci_data;
 354
 355         omap->usbhost_ick = clk_get(dev, "usbhost_ick");
 356         if (IS_ERR(omap->usbhost_ick)) {
 357                 ret =  PTR_ERR(omap->usbhost_ick);
 358                 dev_err(dev, "usbhost_ick failed error:%d\n", ret);
 359                 goto err_end;
 360         }
 361
 362         omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
 363         if (IS_ERR(omap->usbhost_hs_fck)) {
 364                 ret = PTR_ERR(omap->usbhost_hs_fck);
 365                 dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
 366                 goto err_usbhost_ick;
 367         }
 368
 369         omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
 370         if (IS_ERR(omap->usbhost_fs_fck)) {
 371                 ret = PTR_ERR(omap->usbhost_fs_fck);
 372                 dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
 373                 goto err_usbhost_hs_fck;
 374         }
 375
 376         omap->usbtll_fck = clk_get(dev, "usbtll_fck");
 377         if (IS_ERR(omap->usbtll_fck)) {
 378                 ret = PTR_ERR(omap->usbtll_fck);
 379                 dev_err(dev, "usbtll_fck failed error:%d\n", ret);
 380                 goto err_usbhost_fs_fck;
 381         }
 382
 383         omap->usbtll_ick = clk_get(dev, "usbtll_ick");
 384         if (IS_ERR(omap->usbtll_ick)) {
 385                 ret = PTR_ERR(omap->usbtll_ick);
 386                 dev_err(dev, "usbtll_ick failed error:%d\n", ret);
 387                 goto err_usbtll_fck;
 388         }
 389
 390         omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
 391         if (IS_ERR(omap->utmi_p1_fck)) {
 392                 ret = PTR_ERR(omap->utmi_p1_fck);
 393                 dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
 394                 goto err_usbtll_ick;
 395         }
 396
 397         omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
 398         if (IS_ERR(omap->xclk60mhsp1_ck)) {
 399                 ret = PTR_ERR(omap->xclk60mhsp1_ck);
 400                 dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
 401                 goto err_utmi_p1_fck;
 402         }
 403
 404         omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
 405         if (IS_ERR(omap->utmi_p2_fck)) {
 406                 ret = PTR_ERR(omap->utmi_p2_fck);
 407                 dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
 408                 goto err_xclk60mhsp1_ck;
 409         }
 410
 411         omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
 412         if (IS_ERR(omap->xclk60mhsp2_ck)) {
 413                 ret = PTR_ERR(omap->xclk60mhsp2_ck);
 414                 dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
 415                 goto err_utmi_p2_fck;
 416         }
 417
 418         omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
 419         if (IS_ERR(omap->usbhost_p1_fck)) {
 420                 ret = PTR_ERR(omap->usbhost_p1_fck);
 421                 dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
 422                 goto err_xclk60mhsp2_ck;
 423         }
 424
 425         omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
 426         if (IS_ERR(omap->usbtll_p1_fck)) {
 427                 ret = PTR_ERR(omap->usbtll_p1_fck);
 428                 dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
 429                 goto err_usbhost_p1_fck;
 430         }
 431
 432         omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
 433         if (IS_ERR(omap->usbhost_p2_fck)) {
 434                 ret = PTR_ERR(omap->usbhost_p2_fck);
 435                 dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
 436                 goto err_usbtll_p1_fck;
 437         }
 438
 439         omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
 440         if (IS_ERR(omap->usbtll_p2_fck)) {
 441                 ret = PTR_ERR(omap->usbtll_p2_fck);
 442                 dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
 443                 goto err_usbhost_p2_fck;
 444         }
 445
 446         omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
 447         if (IS_ERR(omap->init_60m_fclk)) {
 448                 ret = PTR_ERR(omap->init_60m_fclk);
 449                 dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
 450                 goto err_usbtll_p2_fck;
 451         }
 452
 453         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
 454         if (!res) {
 455                 dev_err(dev, "UHH EHCI get resource failed\n");
 456                 ret = -ENODEV;
 457                 goto err_init_60m_fclk;
 458         }
 459
 460         omap->uhh_base = ioremap(res->start, resource_size(res));
 461         if (!omap->uhh_base) {
 462                 dev_err(dev, "UHH ioremap failed\n");
 463                 ret = -ENOMEM;
 464                 goto err_init_60m_fclk;
 465         }
 466
 467         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
 468         if (!res) {
 469                 dev_err(dev, "UHH EHCI get resource failed\n");
 470                 ret = -ENODEV;
 471                 goto err_tll;
 472         }
 473
 474         omap->tll_base = ioremap(res->start, resource_size(res));
 475         if (!omap->tll_base) {
 476                 dev_err(dev, "TLL ioremap failed\n");
 477                 ret = -ENOMEM;
 478                 goto err_tll;
 479         }
 480
 481         platform_set_drvdata(pdev, omap);
 482
 483         ret = omap_usbhs_alloc_children(pdev);
 484         if (ret) {
 485                 dev_err(dev, "omap_usbhs_alloc_children failed\n");
 486                 goto err_alloc;
 487         }
 488
 489         goto end_probe;
 490
 491 err_alloc:
 492         iounmap(omap->tll_base);
 493
 494 err_tll:
 495         iounmap(omap->uhh_base);
 496
 497 err_init_60m_fclk:
 498         clk_put(omap->init_60m_fclk);
 499
 500 err_usbtll_p2_fck:
 501         clk_put(omap->usbtll_p2_fck);
 502
 503 err_usbhost_p2_fck:
 504         clk_put(omap->usbhost_p2_fck);
 505
 506 err_usbtll_p1_fck:
 507         clk_put(omap->usbtll_p1_fck);
 508
 509 err_usbhost_p1_fck:
 510         clk_put(omap->usbhost_p1_fck);
 511
 512 err_xclk60mhsp2_ck:
 513         clk_put(omap->xclk60mhsp2_ck);
 514
 515 err_utmi_p2_fck:
 516         clk_put(omap->utmi_p2_fck);
 517
 518 err_xclk60mhsp1_ck:
 519         clk_put(omap->xclk60mhsp1_ck);
 520
 521 err_utmi_p1_fck:
 522         clk_put(omap->utmi_p1_fck);
 523
 524 err_usbtll_ick:
 525         clk_put(omap->usbtll_ick);
 526
 527 err_usbtll_fck:
 528         clk_put(omap->usbtll_fck);
 529
 530 err_usbhost_fs_fck:
 531         clk_put(omap->usbhost_fs_fck);
 532
 533 err_usbhost_hs_fck:
 534         clk_put(omap->usbhost_hs_fck);
 535
 536 err_usbhost_ick:
 537         clk_put(omap->usbhost_ick);
 538
 539 err_end:
 540         kfree(omap);
 541
 542 end_probe:
 543         return ret;
 544 }
 545
 546 /**
 547  * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
 548  * @pdev: USB Host Controller being removed
 549  *
 550  * Reverses the effect of usbhs_omap_probe().
 551  */
 552 static int __devexit usbhs_omap_remove(struct platform_device *pdev)
 553 {
 554         struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
 555
 556         if (omap->count != 0) {
 557                 dev_err(&pdev->dev,
 558                         "Either EHCI or OHCI is still using usbhs core\n");
 559                 return -EBUSY;
 560         }
 561
 562         iounmap(omap->tll_base);
 563         iounmap(omap->uhh_base);
 564         clk_put(omap->init_60m_fclk);
 565         clk_put(omap->usbtll_p2_fck);
 566         clk_put(omap->usbhost_p2_fck);
 567         clk_put(omap->usbtll_p1_fck);
 568         clk_put(omap->usbhost_p1_fck);
 569         clk_put(omap->xclk60mhsp2_ck);
 570         clk_put(omap->utmi_p2_fck);
 571         clk_put(omap->xclk60mhsp1_ck);
 572         clk_put(omap->utmi_p1_fck);
 573         clk_put(omap->usbtll_ick);
 574         clk_put(omap->usbtll_fck);
 575         clk_put(omap->usbhost_fs_fck);
 576         clk_put(omap->usbhost_hs_fck);
 577         clk_put(omap->usbhost_ick);
 578         kfree(omap);
 579
 580         return 0;
 581 }
 582
 583 static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
 584 {
 585         switch (pmode) {
 586         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
 587         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
 588         case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
 589         case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
 590         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
 591         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
 592         case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
 593         case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
 594         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
 595         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
 596                 return true;
 597
 598         default:
 599                 return false;
 600         }
 601 }
 602
 603 /*
 604  * convert the port-mode enum to a value we can use in the FSLSMODE
 605  * field of USBTLL_CHANNEL_CONF
 606  */
 607 static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
 608 {
 609         switch (mode) {
 610         case OMAP_USBHS_PORT_MODE_UNUSED:
 611         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
 612                 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
 613
 614         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
 615                 return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;
 616
 617         case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
 618                 return OMAP_TLL_FSLSMODE_3PIN_PHY;
 619
 620         case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
 621                 return OMAP_TLL_FSLSMODE_4PIN_PHY;
 622
 623         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
 624                 return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;
 625
 626         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
 627                 return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;
 628
 629         case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
 630                 return OMAP_TLL_FSLSMODE_3PIN_TLL;
 631
 632         case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
 633                 return OMAP_TLL_FSLSMODE_4PIN_TLL;
 634
 635         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
 636                 return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;
 637
 638         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
 639                 return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
 640         default:
 641                 pr_warning("Invalid port mode, using default\n");
 642                 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
 643         }
 644 }
 645
 646 static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
 647 {
 648         struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
 649         struct usbhs_omap_platform_data *pdata = dev->platform_data;
 650         unsigned                        reg;
 651         int                             i;
 652
 653         /* Program Common TLL register */
 654         reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF);
 655         reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
 656                 | OMAP_TLL_SHARED_CONF_USB_DIVRATION);
 657         reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
 658         reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
 659
 660         usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg);
 661
 662         /* Enable channels now */
 663         for (i = 0; i < tll_channel_count; i++) {
 664                 reg = usbhs_read(omap->tll_base,
 665                                 OMAP_TLL_CHANNEL_CONF(i));
 666
 667                 if (is_ohci_port(pdata->port_mode[i])) {
 668                         reg |= ohci_omap3_fslsmode(pdata->port_mode[i])
 669                                 << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
 670                         reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
 671                 } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) {
 672
 673                         /* Disable AutoIdle, BitStuffing and use SDR Mode */
 674                         reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
 675                                 | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
 676                                 | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
 677
 678                         reg |= (1 << (i + 1));
 679                 } else
 680                         continue;
 681
 682                 reg |= OMAP_TLL_CHANNEL_CONF_CHANEN;
 683                 usbhs_write(omap->tll_base,
 684                                 OMAP_TLL_CHANNEL_CONF(i), reg);
 685
 686                 usbhs_writeb(omap->tll_base,
 687                                 OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe);
 688         }
 689 }
 690
 691 static int usbhs_enable(struct device *dev)
 692 {
 693         struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
 694         struct usbhs_omap_platform_data *pdata = &omap->platdata;
 695         unsigned long                   flags = 0;
 696         int                             ret = 0;
 697         unsigned long                   timeout;
 698         unsigned                        reg;
 699
 700         dev_dbg(dev, "starting TI HSUSB Controller\n");
 701         if (!pdata) {
 702                 dev_dbg(dev, "missing platform_data\n");
 703                 ret =  -ENODEV;
 704                 goto end_enable;
 705         }
 706
 707         spin_lock_irqsave(&omap->lock, flags);
 708         if (omap->count > 0)
 709                 goto end_count;
 710
 711         clk_enable(omap->usbhost_ick);
 712         clk_enable(omap->usbhost_hs_fck);
 713         clk_enable(omap->usbhost_fs_fck);
 714         clk_enable(omap->usbtll_fck);
 715         clk_enable(omap->usbtll_ick);
 716
 717         if (pdata->ehci_data->phy_reset) {
 718                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
 719                         gpio_request(pdata->ehci_data->reset_gpio_port[0],
 720                                                 "USB1 PHY reset");
 721                         gpio_direction_output
 722                                 (pdata->ehci_data->reset_gpio_port[0], 1);
 723                 }
 724
 725                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
 726                         gpio_request(pdata->ehci_data->reset_gpio_port[1],
 727                                                 "USB2 PHY reset");
 728                         gpio_direction_output
 729                                 (pdata->ehci_data->reset_gpio_port[1], 1);
 730                 }
 731
 732                 /* Hold the PHY in RESET for enough time till DIR is high */
 733                 udelay(10);
 734         }
 735
 736         omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
 737         dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
 738
 739         /* perform TLL soft reset, and wait until reset is complete */
 740         usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
 741                         OMAP_USBTLL_SYSCONFIG_SOFTRESET);
 742
 743         /* Wait for TLL reset to complete */
 744         timeout = jiffies + msecs_to_jiffies(1000);
 745         while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
 746                         & OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
 747                 cpu_relax();
 748
 749                 if (time_after(jiffies, timeout)) {
 750                         dev_dbg(dev, "operation timed out\n");
 751                         ret = -EINVAL;
 752                         goto err_tll;
 753                 }
 754         }
 755
 756         dev_dbg(dev, "TLL RESET DONE\n");
 757
 758         /* (1<<3) = no idle mode only for initial debugging */
 759         usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
 760                         OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
 761                         OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
 762                         OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
 763
 764         /* Put UHH in NoIdle/NoStandby mode */
 765         reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
 766         if (is_omap_usbhs_rev1(omap)) {
 767                 reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
 768                                 | OMAP_UHH_SYSCONFIG_SIDLEMODE
 769                                 | OMAP_UHH_SYSCONFIG_CACTIVITY
 770                                 | OMAP_UHH_SYSCONFIG_MIDLEMODE);
 771                 reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
 772
 773
 774         } else if (is_omap_usbhs_rev2(omap)) {
 775                 reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
 776                 reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
 777                 reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
 778                 reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
 779         }
 780
 781         usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
 782
 783         reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
 784         /* setup ULPI bypass and burst configurations */
 785         reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
 786                         | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
 787                         | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN);
 788         reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK;
 789         reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;
 790
 791         if (is_omap_usbhs_rev1(omap)) {
 792                 if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED)
 793                         reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
 794                 if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED)
 795                         reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
 796                 if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED)
 797                         reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
 798
 799                 /* Bypass the TLL module for PHY mode operation */
 800                 if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
 801                         dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
 802                         if (is_ehci_phy_mode(pdata->port_mode[0]) ||
 803                                 is_ehci_phy_mode(pdata->port_mode[1]) ||
 804                                         is_ehci_phy_mode(pdata->port_mode[2]))
 805                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
 806                         else
 807                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
 808                 } else {
 809                         dev_dbg(dev, "OMAP3 ES version > ES2.1\n");
 810                         if (is_ehci_phy_mode(pdata->port_mode[0]))
 811                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
 812                         else
 813                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
 814                         if (is_ehci_phy_mode(pdata->port_mode[1]))
 815                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
 816                         else
 817                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
 818                         if (is_ehci_phy_mode(pdata->port_mode[2]))
 819                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
 820                         else
 821                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
 822                 }
 823         } else if (is_omap_usbhs_rev2(omap)) {
 824                 /* Clear port mode fields for PHY mode*/
 825                 reg &= ~OMAP4_P1_MODE_CLEAR;
 826                 reg &= ~OMAP4_P2_MODE_CLEAR;
 827
 828                 if (is_ehci_phy_mode(pdata->port_mode[0])) {
 829                         ret = clk_set_parent(omap->utmi_p1_fck,
 830                                                 omap->xclk60mhsp1_ck);
 831                         if (ret != 0) {
 832                                 dev_err(dev, "xclk60mhsp1_ck set parent"
 833                                 "failed error:%d\n", ret);
 834                                 goto err_tll;
 835                         }
 836                 } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
 837                         ret = clk_set_parent(omap->utmi_p1_fck,
 838                                                 omap->init_60m_fclk);
 839                         if (ret != 0) {
 840                                 dev_err(dev, "init_60m_fclk set parent"
 841                                 "failed error:%d\n", ret);
 842                                 goto err_tll;
 843                         }
 844                         clk_enable(omap->usbhost_p1_fck);
 845                         clk_enable(omap->usbtll_p1_fck);
 846                 }
 847
 848                 if (is_ehci_phy_mode(pdata->port_mode[1])) {
 849                         ret = clk_set_parent(omap->utmi_p2_fck,
 850                                                 omap->xclk60mhsp2_ck);
 851                         if (ret != 0) {
 852                                 dev_err(dev, "xclk60mhsp1_ck set parent"
 853                                         "failed error:%d\n", ret);
 854                                 goto err_tll;
 855                         }
 856                 } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
 857                         ret = clk_set_parent(omap->utmi_p2_fck,
 858                                                 omap->init_60m_fclk);
 859                         if (ret != 0) {
 860                                 dev_err(dev, "init_60m_fclk set parent"
 861                                 "failed error:%d\n", ret);
 862                                 goto err_tll;
 863                         }
 864                         clk_enable(omap->usbhost_p2_fck);
 865                         clk_enable(omap->usbtll_p2_fck);
 866                 }
 867
 868                 clk_enable(omap->utmi_p1_fck);
 869                 clk_enable(omap->utmi_p2_fck);
 870
 871                 if (is_ehci_tll_mode(pdata->port_mode[0]) ||
 872                         (is_ohci_port(pdata->port_mode[0])))
 873                         reg |= OMAP4_P1_MODE_TLL;
 874                 else if (is_ehci_hsic_mode(pdata->port_mode[0]))
 875                         reg |= OMAP4_P1_MODE_HSIC;
 876
 877                 if (is_ehci_tll_mode(pdata->port_mode[1]) ||
 878                         (is_ohci_port(pdata->port_mode[1])))
 879                         reg |= OMAP4_P2_MODE_TLL;
 880                 else if (is_ehci_hsic_mode(pdata->port_mode[1]))
 881                         reg |= OMAP4_P2_MODE_HSIC;
 882         }
 883
 884         usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
 885         dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
 886
 887         if (is_ehci_tll_mode(pdata->port_mode[0]) ||
 888                 is_ehci_tll_mode(pdata->port_mode[1]) ||
 889                 is_ehci_tll_mode(pdata->port_mode[2]) ||
 890                 (is_ohci_port(pdata->port_mode[0])) ||
 891                 (is_ohci_port(pdata->port_mode[1])) ||
 892                 (is_ohci_port(pdata->port_mode[2]))) {
 893
 894                 /* Enable UTMI mode for required TLL channels */
 895                 if (is_omap_usbhs_rev2(omap))
 896                         usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT);
 897                 else
 898                         usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT);
 899         }
 900
 901         if (pdata->ehci_data->phy_reset) {
 902                 /* Hold the PHY in RESET for enough time till
 903                  * PHY is settled and ready
 904                  */
 905                 udelay(10);
 906
 907                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 908                         gpio_set_value
 909                                 (pdata->ehci_data->reset_gpio_port[0], 0);
 910
 911                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 912                         gpio_set_value
 913                                 (pdata->ehci_data->reset_gpio_port[1], 0);
 914         }
 915
 916 end_count:
 917         omap->count++;
 918         goto end_enable;
 919
 920 err_tll:
 921         if (pdata->ehci_data->phy_reset) {
 922                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 923                         gpio_free(pdata->ehci_data->reset_gpio_port[0]);
 924
 925                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 926                         gpio_free(pdata->ehci_data->reset_gpio_port[1]);
 927         }
 928
 929         clk_disable(omap->usbtll_ick);
 930         clk_disable(omap->usbtll_fck);
 931         clk_disable(omap->usbhost_fs_fck);
 932         clk_disable(omap->usbhost_hs_fck);
 933         clk_disable(omap->usbhost_ick);
 934
 935 end_enable:
 936         spin_unlock_irqrestore(&omap->lock, flags);
 937         return ret;
 938 }
 939
 940 static void usbhs_disable(struct device *dev)
 941 {
 942         struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
 943         struct usbhs_omap_platform_data *pdata = &omap->platdata;
 944         unsigned long                   flags = 0;
 945         unsigned long                   timeout;
 946
 947         dev_dbg(dev, "stopping TI HSUSB Controller\n");
 948
 949         spin_lock_irqsave(&omap->lock, flags);
 950
 951         if (omap->count == 0)
 952                 goto end_disble;
 953
 954         omap->count--;
 955
 956         if (omap->count != 0)
 957                 goto end_disble;
 958
 959         /* Reset OMAP modules for insmod/rmmod to work */
 960         usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
 961                         is_omap_usbhs_rev2(omap) ?
 962                         OMAP4_UHH_SYSCONFIG_SOFTRESET :
 963                         OMAP_UHH_SYSCONFIG_SOFTRESET);
 964
 965         timeout = jiffies + msecs_to_jiffies(100);
 966         while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
 967                                 & (1 << 0))) {
 968                 cpu_relax();
 969
 970                 if (time_after(jiffies, timeout))
 971                         dev_dbg(dev, "operation timed out\n");
 972         }
 973
 974         while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
 975                                 & (1 << 1))) {
 976                 cpu_relax();
 977
 978                 if (time_after(jiffies, timeout))
 979                         dev_dbg(dev, "operation timed out\n");
 980         }
 981
 982         while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
 983                                 & (1 << 2))) {
 984                 cpu_relax();
 985
 986                 if (time_after(jiffies, timeout))
 987                         dev_dbg(dev, "operation timed out\n");
 988         }
 989
 990         usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
 991
 992         while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
 993                                 & (1 << 0))) {
 994                 cpu_relax();
 995
 996                 if (time_after(jiffies, timeout))
 997                         dev_dbg(dev, "operation timed out\n");
 998         }
 999
1000         if (pdata->ehci_data->phy_reset) {
1001                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
1002                         gpio_free(pdata->ehci_data->reset_gpio_port[0]);
1003
1004                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
1005                         gpio_free(pdata->ehci_data->reset_gpio_port[1]);
1006         }
1007
1008         clk_disable(omap->utmi_p2_fck);
1009         clk_disable(omap->utmi_p1_fck);
1010         clk_disable(omap->usbtll_ick);
1011         clk_disable(omap->usbtll_fck);
1012         clk_disable(omap->usbhost_fs_fck);
1013         clk_disable(omap->usbhost_hs_fck);
1014         clk_disable(omap->usbhost_ick);
1015
1016 end_disble:
1017         spin_unlock_irqrestore(&omap->lock, flags);
1018 }
1019
1020 int omap_usbhs_enable(struct device *dev)
1021 {
1022         return  usbhs_enable(dev->parent);
1023 }
1024 EXPORT_SYMBOL_GPL(omap_usbhs_enable);
1025
1026 void omap_usbhs_disable(struct device *dev)
1027 {
1028         usbhs_disable(dev->parent);
1029 }
1030 EXPORT_SYMBOL_GPL(omap_usbhs_disable);
1031
1032 static struct platform_driver usbhs_omap_driver = {
1033         .driver = {
1034                 .name           = (char *)usbhs_driver_name,
1035                 .owner          = THIS_MODULE,
1036         },
1037         .remove         = __exit_p(usbhs_omap_remove),
1038 };
1039
1040 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
1041 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
1042 MODULE_LICENSE("GPL v2");
1043 MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI");
1044
1045 static int __init omap_usbhs_drvinit(void)
1046 {
1047         return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe);
1048 }
1049
1050 /*
1051  * init before ehci and ohci drivers;
1052  * The usbhs core driver should be initialized much before
1053  * the omap ehci and ohci probe functions are called.
1054  */
1055 fs_initcall(omap_usbhs_drvinit);
1056
1057 static void __exit omap_usbhs_drvexit(void)
1058 {
1059         platform_driver_unregister(&usbhs_omap_driver);
1060 }
1061 module_exit(omap_usbhs_drvexit);