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 <plat/usb.h>
  29
  30 #define USBHS_DRIVER_NAME       "usbhs-omap"
  31 #define OMAP_EHCI_DEVICE        "ehci-omap"
  32 #define OMAP_OHCI_DEVICE        "ohci-omap3"
  33
  34 /* OMAP USBHOST Register addresses  */
  35
  36 /* TLL Register Set */
  37 #define OMAP_USBTLL_REVISION                            (0x00)
  38 #define OMAP_USBTLL_SYSCONFIG                           (0x10)
  39 #define OMAP_USBTLL_SYSCONFIG_CACTIVITY                 (1 << 8)
  40 #define OMAP_USBTLL_SYSCONFIG_SIDLEMODE                 (1 << 3)
  41 #define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP                 (1 << 2)
  42 #define OMAP_USBTLL_SYSCONFIG_SOFTRESET                 (1 << 1)
  43 #define OMAP_USBTLL_SYSCONFIG_AUTOIDLE                  (1 << 0)
  44
  45 #define OMAP_USBTLL_SYSSTATUS                           (0x14)
  46 #define OMAP_USBTLL_SYSSTATUS_RESETDONE                 (1 << 0)
  47
  48 #define OMAP_USBTLL_IRQSTATUS                           (0x18)
  49 #define OMAP_USBTLL_IRQENABLE                           (0x1C)
  50
  51 #define OMAP_TLL_SHARED_CONF                            (0x30)
  52 #define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN             (1 << 6)
  53 #define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN            (1 << 5)
  54 #define OMAP_TLL_SHARED_CONF_USB_DIVRATION              (1 << 2)
  55 #define OMAP_TLL_SHARED_CONF_FCLK_REQ                   (1 << 1)
  56 #define OMAP_TLL_SHARED_CONF_FCLK_IS_ON                 (1 << 0)
  57
  58 #define OMAP_TLL_CHANNEL_CONF(num)                      (0x040 + 0x004 * num)
  59 #define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT            24
  60 #define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF            (1 << 11)
  61 #define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE         (1 << 10)
  62 #define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE              (1 << 9)
  63 #define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE               (1 << 8)
  64 #define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS             (1 << 1)
  65 #define OMAP_TLL_CHANNEL_CONF_CHANEN                    (1 << 0)
  66
  67 #define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0              0x0
  68 #define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM                0x1
  69 #define OMAP_TLL_FSLSMODE_3PIN_PHY                      0x2
  70 #define OMAP_TLL_FSLSMODE_4PIN_PHY                      0x3
  71 #define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0              0x4
  72 #define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM                0x5
  73 #define OMAP_TLL_FSLSMODE_3PIN_TLL                      0x6
  74 #define OMAP_TLL_FSLSMODE_4PIN_TLL                      0x7
  75 #define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0              0xA
  76 #define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM                0xB
  77
  78 #define OMAP_TLL_ULPI_FUNCTION_CTRL(num)                (0x804 + 0x100 * num)
  79 #define OMAP_TLL_ULPI_INTERFACE_CTRL(num)               (0x807 + 0x100 * num)
  80 #define OMAP_TLL_ULPI_OTG_CTRL(num)                     (0x80A + 0x100 * num)
  81 #define OMAP_TLL_ULPI_INT_EN_RISE(num)                  (0x80D + 0x100 * num)
  82 #define OMAP_TLL_ULPI_INT_EN_FALL(num)                  (0x810 + 0x100 * num)
  83 #define OMAP_TLL_ULPI_INT_STATUS(num)                   (0x813 + 0x100 * num)
  84 #define OMAP_TLL_ULPI_INT_LATCH(num)                    (0x814 + 0x100 * num)
  85 #define OMAP_TLL_ULPI_DEBUG(num)                        (0x815 + 0x100 * num)
  86 #define OMAP_TLL_ULPI_SCRATCH_REGISTER(num)             (0x816 + 0x100 * num)
  87
  88 #define OMAP_TLL_CHANNEL_COUNT                          3
  89 #define OMAP_TLL_CHANNEL_1_EN_MASK                      (1 << 0)
  90 #define OMAP_TLL_CHANNEL_2_EN_MASK                      (1 << 1)
  91 #define OMAP_TLL_CHANNEL_3_EN_MASK                      (1 << 2)
  92
  93 /* UHH Register Set */
  94 #define OMAP_UHH_REVISION                               (0x00)
  95 #define OMAP_UHH_SYSCONFIG                              (0x10)
  96 #define OMAP_UHH_SYSCONFIG_MIDLEMODE                    (1 << 12)
  97 #define OMAP_UHH_SYSCONFIG_CACTIVITY                    (1 << 8)
  98 #define OMAP_UHH_SYSCONFIG_SIDLEMODE                    (1 << 3)
  99 #define OMAP_UHH_SYSCONFIG_ENAWAKEUP                    (1 << 2)
 100 #define OMAP_UHH_SYSCONFIG_SOFTRESET                    (1 << 1)
 101 #define OMAP_UHH_SYSCONFIG_AUTOIDLE                     (1 << 0)
 102
 103 #define OMAP_UHH_SYSSTATUS                              (0x14)
 104 #define OMAP_UHH_HOSTCONFIG                             (0x40)
 105 #define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS                 (1 << 0)
 106 #define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS              (1 << 0)
 107 #define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS              (1 << 11)
 108 #define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS              (1 << 12)
 109 #define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN              (1 << 2)
 110 #define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN              (1 << 3)
 111 #define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN             (1 << 4)
 112 #define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN              (1 << 5)
 113 #define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS           (1 << 8)
 114 #define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS           (1 << 9)
 115 #define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS           (1 << 10)
 116 #define OMAP4_UHH_HOSTCONFIG_APP_START_CLK              (1 << 31)
 117
 118 /* OMAP4-specific defines */
 119 #define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR              (3 << 2)
 120 #define OMAP4_UHH_SYSCONFIG_NOIDLE                      (1 << 2)
 121 #define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR             (3 << 4)
 122 #define OMAP4_UHH_SYSCONFIG_NOSTDBY                     (1 << 4)
 123 #define OMAP4_UHH_SYSCONFIG_SOFTRESET                   (1 << 0)
 124
 125 #define OMAP4_P1_MODE_CLEAR                             (3 << 16)
 126 #define OMAP4_P1_MODE_TLL                               (1 << 16)
 127 #define OMAP4_P1_MODE_HSIC                              (3 << 16)
 128 #define OMAP4_P2_MODE_CLEAR                             (3 << 18)
 129 #define OMAP4_P2_MODE_TLL                               (1 << 18)
 130 #define OMAP4_P2_MODE_HSIC                              (3 << 18)
 131
 132 #define OMAP_REV2_TLL_CHANNEL_COUNT                     2
 133
 134 #define OMAP_UHH_DEBUG_CSR                              (0x44)
 135
 136 /* Values of UHH_REVISION - Note: these are not given in the TRM */
 137 #define OMAP_USBHS_REV1         0x00000010      /* OMAP3 */
 138 #define OMAP_USBHS_REV2         0x50700100      /* OMAP4 */
 139
 140 #define is_omap_usbhs_rev1(x)   (x->usbhs_rev == OMAP_USBHS_REV1)
 141 #define is_omap_usbhs_rev2(x)   (x->usbhs_rev == OMAP_USBHS_REV2)
 142
 143 #define is_ehci_phy_mode(x)     (x == OMAP_EHCI_PORT_MODE_PHY)
 144 #define is_ehci_tll_mode(x)     (x == OMAP_EHCI_PORT_MODE_TLL)
 145 #define is_ehci_hsic_mode(x)    (x == OMAP_EHCI_PORT_MODE_HSIC)
 146
 147
 148 struct usbhs_hcd_omap {
 149         struct clk                      *usbhost_ick;
 150         struct clk                      *usbhost_hs_fck;
 151         struct clk                      *usbhost_fs_fck;
 152         struct clk                      *xclk60mhsp1_ck;
 153         struct clk                      *xclk60mhsp2_ck;
 154         struct clk                      *utmi_p1_fck;
 155         struct clk                      *usbhost_p1_fck;
 156         struct clk                      *usbtll_p1_fck;
 157         struct clk                      *utmi_p2_fck;
 158         struct clk                      *usbhost_p2_fck;
 159         struct clk                      *usbtll_p2_fck;
 160         struct clk                      *init_60m_fclk;
 161         struct clk                      *usbtll_fck;
 162         struct clk                      *usbtll_ick;
 163
 164         void __iomem                    *uhh_base;
 165         void __iomem                    *tll_base;
 166
 167         struct usbhs_omap_platform_data platdata;
 168
 169         u32                             usbhs_rev;
 170         spinlock_t                      lock;
 171         int                             count;
 172 };
 173 /*-------------------------------------------------------------------------*/
 174
 175 const char usbhs_driver_name[] = USBHS_DRIVER_NAME;
 176 static u64 usbhs_dmamask = ~(u32)0;
 177
 178 /*-------------------------------------------------------------------------*/
 179
 180 static inline void usbhs_write(void __iomem *base, u32 reg, u32 val)
 181 {
 182         __raw_writel(val, base + reg);
 183 }
 184
 185 static inline u32 usbhs_read(void __iomem *base, u32 reg)
 186 {
 187         return __raw_readl(base + reg);
 188 }
 189
 190 static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val)
 191 {
 192         __raw_writeb(val, base + reg);
 193 }
 194
 195 static inline u8 usbhs_readb(void __iomem *base, u8 reg)
 196 {
 197         return __raw_readb(base + reg);
 198 }
 199
 200 /*-------------------------------------------------------------------------*/
 201
 202 static struct platform_device *omap_usbhs_alloc_child(const char *name,
 203                         struct resource *res, int num_resources, void *pdata,
 204                         size_t pdata_size, struct device *dev)
 205 {
 206         struct platform_device  *child;
 207         int                     ret;
 208
 209         child = platform_device_alloc(name, 0);
 210
 211         if (!child) {
 212                 dev_err(dev, "platform_device_alloc %s failed\n", name);
 213                 goto err_end;
 214         }
 215
 216         ret = platform_device_add_resources(child, res, num_resources);
 217         if (ret) {
 218                 dev_err(dev, "platform_device_add_resources failed\n");
 219                 goto err_alloc;
 220         }
 221
 222         ret = platform_device_add_data(child, pdata, pdata_size);
 223         if (ret) {
 224                 dev_err(dev, "platform_device_add_data failed\n");
 225                 goto err_alloc;
 226         }
 227
 228         child->dev.dma_mask             = &usbhs_dmamask;
 229         child->dev.coherent_dma_mask    = 0xffffffff;
 230         child->dev.parent               = dev;
 231
 232         ret = platform_device_add(child);
 233         if (ret) {
 234                 dev_err(dev, "platform_device_add failed\n");
 235                 goto err_alloc;
 236         }
 237
 238         return child;
 239
 240 err_alloc:
 241         platform_device_put(child);
 242
 243 err_end:
 244         return NULL;
 245 }
 246
 247 static int omap_usbhs_alloc_children(struct platform_device *pdev)
 248 {
 249         struct device                           *dev = &pdev->dev;
 250         struct usbhs_hcd_omap                   *omap;
 251         struct ehci_hcd_omap_platform_data      *ehci_data;
 252         struct ohci_hcd_omap_platform_data      *ohci_data;
 253         struct platform_device                  *ehci;
 254         struct platform_device                  *ohci;
 255         struct resource                         *res;
 256         struct resource                         resources[2];
 257         int                                     ret;
 258
 259         omap = platform_get_drvdata(pdev);
 260         ehci_data = omap->platdata.ehci_data;
 261         ohci_data = omap->platdata.ohci_data;
 262
 263         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci");
 264         if (!res) {
 265                 dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n");
 266                 ret = -ENODEV;
 267                 goto err_end;
 268         }
 269         resources[0] = *res;
 270
 271         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq");
 272         if (!res) {
 273                 dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed\n");
 274                 ret = -ENODEV;
 275                 goto err_end;
 276         }
 277         resources[1] = *res;
 278
 279         ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data,
 280                 sizeof(*ehci_data), dev);
 281
 282         if (!ehci) {
 283                 dev_err(dev, "omap_usbhs_alloc_child failed\n");
 284                 ret = -ENOMEM;
 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                 ret = -ENOMEM;
 309                 goto err_ehci;
 310         }
 311
 312         return 0;
 313
 314 err_ehci:
 315         platform_device_unregister(ehci);
 316
 317 err_end:
 318         return ret;
 319 }
 320
 321 /**
 322  * usbhs_omap_probe - initialize TI-based HCDs
 323  *
 324  * Allocates basic resources for this USB host controller.
 325  */
 326 static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 327 {
 328         struct device                   *dev =  &pdev->dev;
 329         struct usbhs_omap_platform_data *pdata = dev->platform_data;
 330         struct usbhs_hcd_omap           *omap;
 331         struct resource                 *res;
 332         int                             ret = 0;
 333         int                             i;
 334
 335         if (!pdata) {
 336                 dev_err(dev, "Missing platform data\n");
 337                 ret = -ENOMEM;
 338                 goto end_probe;
 339         }
 340
 341         omap = kzalloc(sizeof(*omap), GFP_KERNEL);
 342         if (!omap) {
 343                 dev_err(dev, "Memory allocation failed\n");
 344                 ret = -ENOMEM;
 345                 goto end_probe;
 346         }
 347
 348         spin_lock_init(&omap->lock);
 349
 350         for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
 351                 omap->platdata.port_mode[i] = pdata->port_mode[i];
 352
 353         omap->platdata.ehci_data = pdata->ehci_data;
 354         omap->platdata.ohci_data = pdata->ohci_data;
 355
 356         omap->usbhost_ick = clk_get(dev, "usbhost_ick");
 357         if (IS_ERR(omap->usbhost_ick)) {
 358                 ret =  PTR_ERR(omap->usbhost_ick);
 359                 dev_err(dev, "usbhost_ick failed error:%d\n", ret);
 360                 goto err_end;
 361         }
 362
 363         omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
 364         if (IS_ERR(omap->usbhost_hs_fck)) {
 365                 ret = PTR_ERR(omap->usbhost_hs_fck);
 366                 dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
 367                 goto err_usbhost_ick;
 368         }
 369
 370         omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
 371         if (IS_ERR(omap->usbhost_fs_fck)) {
 372                 ret = PTR_ERR(omap->usbhost_fs_fck);
 373                 dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
 374                 goto err_usbhost_hs_fck;
 375         }
 376
 377         omap->usbtll_fck = clk_get(dev, "usbtll_fck");
 378         if (IS_ERR(omap->usbtll_fck)) {
 379                 ret = PTR_ERR(omap->usbtll_fck);
 380                 dev_err(dev, "usbtll_fck failed error:%d\n", ret);
 381                 goto err_usbhost_fs_fck;
 382         }
 383
 384         omap->usbtll_ick = clk_get(dev, "usbtll_ick");
 385         if (IS_ERR(omap->usbtll_ick)) {
 386                 ret = PTR_ERR(omap->usbtll_ick);
 387                 dev_err(dev, "usbtll_ick failed error:%d\n", ret);
 388                 goto err_usbtll_fck;
 389         }
 390
 391         omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
 392         if (IS_ERR(omap->utmi_p1_fck)) {
 393                 ret = PTR_ERR(omap->utmi_p1_fck);
 394                 dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
 395                 goto err_usbtll_ick;
 396         }
 397
 398         omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
 399         if (IS_ERR(omap->xclk60mhsp1_ck)) {
 400                 ret = PTR_ERR(omap->xclk60mhsp1_ck);
 401                 dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
 402                 goto err_utmi_p1_fck;
 403         }
 404
 405         omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
 406         if (IS_ERR(omap->utmi_p2_fck)) {
 407                 ret = PTR_ERR(omap->utmi_p2_fck);
 408                 dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
 409                 goto err_xclk60mhsp1_ck;
 410         }
 411
 412         omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
 413         if (IS_ERR(omap->xclk60mhsp2_ck)) {
 414                 ret = PTR_ERR(omap->xclk60mhsp2_ck);
 415                 dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
 416                 goto err_utmi_p2_fck;
 417         }
 418
 419         omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
 420         if (IS_ERR(omap->usbhost_p1_fck)) {
 421                 ret = PTR_ERR(omap->usbhost_p1_fck);
 422                 dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
 423                 goto err_xclk60mhsp2_ck;
 424         }
 425
 426         omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
 427         if (IS_ERR(omap->usbtll_p1_fck)) {
 428                 ret = PTR_ERR(omap->usbtll_p1_fck);
 429                 dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
 430                 goto err_usbhost_p1_fck;
 431         }
 432
 433         omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
 434         if (IS_ERR(omap->usbhost_p2_fck)) {
 435                 ret = PTR_ERR(omap->usbhost_p2_fck);
 436                 dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
 437                 goto err_usbtll_p1_fck;
 438         }
 439
 440         omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
 441         if (IS_ERR(omap->usbtll_p2_fck)) {
 442                 ret = PTR_ERR(omap->usbtll_p2_fck);
 443                 dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
 444                 goto err_usbhost_p2_fck;
 445         }
 446
 447         omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
 448         if (IS_ERR(omap->init_60m_fclk)) {
 449                 ret = PTR_ERR(omap->init_60m_fclk);
 450                 dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
 451                 goto err_usbtll_p2_fck;
 452         }
 453
 454         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
 455         if (!res) {
 456                 dev_err(dev, "UHH EHCI get resource failed\n");
 457                 ret = -ENODEV;
 458                 goto err_init_60m_fclk;
 459         }
 460
 461         omap->uhh_base = ioremap(res->start, resource_size(res));
 462         if (!omap->uhh_base) {
 463                 dev_err(dev, "UHH ioremap failed\n");
 464                 ret = -ENOMEM;
 465                 goto err_init_60m_fclk;
 466         }
 467
 468         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
 469         if (!res) {
 470                 dev_err(dev, "UHH EHCI get resource failed\n");
 471                 ret = -ENODEV;
 472                 goto err_tll;
 473         }
 474
 475         omap->tll_base = ioremap(res->start, resource_size(res));
 476         if (!omap->tll_base) {
 477                 dev_err(dev, "TLL ioremap failed\n");
 478                 ret = -ENOMEM;
 479                 goto err_tll;
 480         }
 481
 482         platform_set_drvdata(pdev, omap);
 483
 484         ret = omap_usbhs_alloc_children(pdev);
 485         if (ret) {
 486                 dev_err(dev, "omap_usbhs_alloc_children failed\n");
 487                 goto err_alloc;
 488         }
 489
 490         goto end_probe;
 491
 492 err_alloc:
 493         iounmap(omap->tll_base);
 494
 495 err_tll:
 496         iounmap(omap->uhh_base);
 497
 498 err_init_60m_fclk:
 499         clk_put(omap->init_60m_fclk);
 500
 501 err_usbtll_p2_fck:
 502         clk_put(omap->usbtll_p2_fck);
 503
 504 err_usbhost_p2_fck:
 505         clk_put(omap->usbhost_p2_fck);
 506
 507 err_usbtll_p1_fck:
 508         clk_put(omap->usbtll_p1_fck);
 509
 510 err_usbhost_p1_fck:
 511         clk_put(omap->usbhost_p1_fck);
 512
 513 err_xclk60mhsp2_ck:
 514         clk_put(omap->xclk60mhsp2_ck);
 515
 516 err_utmi_p2_fck:
 517         clk_put(omap->utmi_p2_fck);
 518
 519 err_xclk60mhsp1_ck:
 520         clk_put(omap->xclk60mhsp1_ck);
 521
 522 err_utmi_p1_fck:
 523         clk_put(omap->utmi_p1_fck);
 524
 525 err_usbtll_ick:
 526         clk_put(omap->usbtll_ick);
 527
 528 err_usbtll_fck:
 529         clk_put(omap->usbtll_fck);
 530
 531 err_usbhost_fs_fck:
 532         clk_put(omap->usbhost_fs_fck);
 533
 534 err_usbhost_hs_fck:
 535         clk_put(omap->usbhost_hs_fck);
 536
 537 err_usbhost_ick:
 538         clk_put(omap->usbhost_ick);
 539
 540 err_end:
 541         kfree(omap);
 542
 543 end_probe:
 544         return ret;
 545 }
 546
 547 /**
 548  * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
 549  * @pdev: USB Host Controller being removed
 550  *
 551  * Reverses the effect of usbhs_omap_probe().
 552  */
 553 static int __devexit usbhs_omap_remove(struct platform_device *pdev)
 554 {
 555         struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
 556
 557         if (omap->count != 0) {
 558                 dev_err(&pdev->dev,
 559                         "Either EHCI or OHCI is still using usbhs core\n");
 560                 return -EBUSY;
 561         }
 562
 563         iounmap(omap->tll_base);
 564         iounmap(omap->uhh_base);
 565         clk_put(omap->init_60m_fclk);
 566         clk_put(omap->usbtll_p2_fck);
 567         clk_put(omap->usbhost_p2_fck);
 568         clk_put(omap->usbtll_p1_fck);
 569         clk_put(omap->usbhost_p1_fck);
 570         clk_put(omap->xclk60mhsp2_ck);
 571         clk_put(omap->utmi_p2_fck);
 572         clk_put(omap->xclk60mhsp1_ck);
 573         clk_put(omap->utmi_p1_fck);
 574         clk_put(omap->usbtll_ick);
 575         clk_put(omap->usbtll_fck);
 576         clk_put(omap->usbhost_fs_fck);
 577         clk_put(omap->usbhost_hs_fck);
 578         clk_put(omap->usbhost_ick);
 579         kfree(omap);
 580
 581         return 0;
 582 }
 583
 584 static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
 585 {
 586         switch (pmode) {
 587         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
 588         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
 589         case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
 590         case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
 591         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
 592         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
 593         case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
 594         case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
 595         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
 596         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
 597                 return true;
 598
 599         default:
 600                 return false;
 601         }
 602 }
 603
 604 /*
 605  * convert the port-mode enum to a value we can use in the FSLSMODE
 606  * field of USBTLL_CHANNEL_CONF
 607  */
 608 static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
 609 {
 610         switch (mode) {
 611         case OMAP_USBHS_PORT_MODE_UNUSED:
 612         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
 613                 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
 614
 615         case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
 616                 return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;
 617
 618         case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
 619                 return OMAP_TLL_FSLSMODE_3PIN_PHY;
 620
 621         case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
 622                 return OMAP_TLL_FSLSMODE_4PIN_PHY;
 623
 624         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
 625                 return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;
 626
 627         case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
 628                 return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;
 629
 630         case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
 631                 return OMAP_TLL_FSLSMODE_3PIN_TLL;
 632
 633         case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
 634                 return OMAP_TLL_FSLSMODE_4PIN_TLL;
 635
 636         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
 637                 return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;
 638
 639         case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
 640                 return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
 641         default:
 642                 pr_warning("Invalid port mode, using default\n");
 643                 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
 644         }
 645 }
 646
 647 static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
 648 {
 649         struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
 650         struct usbhs_omap_platform_data *pdata = dev->platform_data;
 651         unsigned                        reg;
 652         int                             i;
 653
 654         /* Program Common TLL register */
 655         reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF);
 656         reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
 657                 | OMAP_TLL_SHARED_CONF_USB_DIVRATION);
 658         reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
 659         reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
 660
 661         usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg);
 662
 663         /* Enable channels now */
 664         for (i = 0; i < tll_channel_count; i++) {
 665                 reg = usbhs_read(omap->tll_base,
 666                                 OMAP_TLL_CHANNEL_CONF(i));
 667
 668                 if (is_ohci_port(pdata->port_mode[i])) {
 669                         reg |= ohci_omap3_fslsmode(pdata->port_mode[i])
 670                                 << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
 671                         reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
 672                 } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) {
 673
 674                         /* Disable AutoIdle, BitStuffing and use SDR Mode */
 675                         reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
 676                                 | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
 677                                 | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
 678
 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                 return  -ENODEV;
 704         }
 705
 706         spin_lock_irqsave(&omap->lock, flags);
 707         if (omap->count > 0)
 708                 goto end_count;
 709
 710         clk_enable(omap->usbhost_ick);
 711         clk_enable(omap->usbhost_hs_fck);
 712         clk_enable(omap->usbhost_fs_fck);
 713         clk_enable(omap->usbtll_fck);
 714         clk_enable(omap->usbtll_ick);
 715
 716         if (pdata->ehci_data->phy_reset) {
 717                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
 718                         gpio_request(pdata->ehci_data->reset_gpio_port[0],
 719                                                 "USB1 PHY reset");
 720                         gpio_direction_output
 721                                 (pdata->ehci_data->reset_gpio_port[0], 0);
 722                 }
 723
 724                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
 725                         gpio_request(pdata->ehci_data->reset_gpio_port[1],
 726                                                 "USB2 PHY reset");
 727                         gpio_direction_output
 728                                 (pdata->ehci_data->reset_gpio_port[1], 0);
 729                 }
 730
 731                 /* Hold the PHY in RESET for enough time till DIR is high */
 732                 udelay(10);
 733         }
 734
 735         omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
 736         dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
 737
 738         /* perform TLL soft reset, and wait until reset is complete */
 739         usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
 740                         OMAP_USBTLL_SYSCONFIG_SOFTRESET);
 741
 742         /* Wait for TLL reset to complete */
 743         timeout = jiffies + msecs_to_jiffies(1000);
 744         while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
 745                         & OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
 746                 cpu_relax();
 747
 748                 if (time_after(jiffies, timeout)) {
 749                         dev_dbg(dev, "operation timed out\n");
 750                         ret = -EINVAL;
 751                         goto err_tll;
 752                 }
 753         }
 754
 755         dev_dbg(dev, "TLL RESET DONE\n");
 756
 757         /* (1<<3) = no idle mode only for initial debugging */
 758         usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
 759                         OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
 760                         OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
 761                         OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
 762
 763         /* Put UHH in NoIdle/NoStandby mode */
 764         reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
 765         if (is_omap_usbhs_rev1(omap)) {
 766                 reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
 767                                 | OMAP_UHH_SYSCONFIG_SIDLEMODE
 768                                 | OMAP_UHH_SYSCONFIG_CACTIVITY
 769                                 | OMAP_UHH_SYSCONFIG_MIDLEMODE);
 770                 reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
 771
 772
 773         } else if (is_omap_usbhs_rev2(omap)) {
 774                 reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
 775                 reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
 776                 reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
 777                 reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
 778         }
 779
 780         usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
 781
 782         reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
 783         /* setup ULPI bypass and burst configurations */
 784         reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
 785                         | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
 786                         | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN);
 787         reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK;
 788         reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;
 789
 790         if (is_omap_usbhs_rev1(omap)) {
 791                 if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED)
 792                         reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
 793                 if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED)
 794                         reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
 795                 if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED)
 796                         reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
 797
 798                 /* Bypass the TLL module for PHY mode operation */
 799                 if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
 800                         dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
 801                         if (is_ehci_phy_mode(pdata->port_mode[0]) ||
 802                                 is_ehci_phy_mode(pdata->port_mode[1]) ||
 803                                         is_ehci_phy_mode(pdata->port_mode[2]))
 804                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
 805                         else
 806                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
 807                 } else {
 808                         dev_dbg(dev, "OMAP3 ES version > ES2.1\n");
 809                         if (is_ehci_phy_mode(pdata->port_mode[0]))
 810                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
 811                         else
 812                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
 813                         if (is_ehci_phy_mode(pdata->port_mode[1]))
 814                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
 815                         else
 816                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
 817                         if (is_ehci_phy_mode(pdata->port_mode[2]))
 818                                 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
 819                         else
 820                                 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
 821                 }
 822         } else if (is_omap_usbhs_rev2(omap)) {
 823                 /* Clear port mode fields for PHY mode*/
 824                 reg &= ~OMAP4_P1_MODE_CLEAR;
 825                 reg &= ~OMAP4_P2_MODE_CLEAR;
 826
 827                 if (is_ehci_phy_mode(pdata->port_mode[0])) {
 828                         ret = clk_set_parent(omap->utmi_p1_fck,
 829                                                 omap->xclk60mhsp1_ck);
 830                         if (ret != 0) {
 831                                 dev_err(dev, "xclk60mhsp1_ck set parent"
 832                                 "failed error:%d\n", ret);
 833                                 goto err_tll;
 834                         }
 835                 } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
 836                         ret = clk_set_parent(omap->utmi_p1_fck,
 837                                                 omap->init_60m_fclk);
 838                         if (ret != 0) {
 839                                 dev_err(dev, "init_60m_fclk set parent"
 840                                 "failed error:%d\n", ret);
 841                                 goto err_tll;
 842                         }
 843                         clk_enable(omap->usbhost_p1_fck);
 844                         clk_enable(omap->usbtll_p1_fck);
 845                 }
 846
 847                 if (is_ehci_phy_mode(pdata->port_mode[1])) {
 848                         ret = clk_set_parent(omap->utmi_p2_fck,
 849                                                 omap->xclk60mhsp2_ck);
 850                         if (ret != 0) {
 851                                 dev_err(dev, "xclk60mhsp1_ck set parent"
 852                                         "failed error:%d\n", ret);
 853                                 goto err_tll;
 854                         }
 855                 } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
 856                         ret = clk_set_parent(omap->utmi_p2_fck,
 857                                                 omap->init_60m_fclk);
 858                         if (ret != 0) {
 859                                 dev_err(dev, "init_60m_fclk set parent"
 860                                 "failed error:%d\n", ret);
 861                                 goto err_tll;
 862                         }
 863                         clk_enable(omap->usbhost_p2_fck);
 864                         clk_enable(omap->usbtll_p2_fck);
 865                 }
 866
 867                 clk_enable(omap->utmi_p1_fck);
 868                 clk_enable(omap->utmi_p2_fck);
 869
 870                 if (is_ehci_tll_mode(pdata->port_mode[0]) ||
 871                         (is_ohci_port(pdata->port_mode[0])))
 872                         reg |= OMAP4_P1_MODE_TLL;
 873                 else if (is_ehci_hsic_mode(pdata->port_mode[0]))
 874                         reg |= OMAP4_P1_MODE_HSIC;
 875
 876                 if (is_ehci_tll_mode(pdata->port_mode[1]) ||
 877                         (is_ohci_port(pdata->port_mode[1])))
 878                         reg |= OMAP4_P2_MODE_TLL;
 879                 else if (is_ehci_hsic_mode(pdata->port_mode[1]))
 880                         reg |= OMAP4_P2_MODE_HSIC;
 881         }
 882
 883         usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
 884         dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
 885
 886         if (is_ehci_tll_mode(pdata->port_mode[0]) ||
 887                 is_ehci_tll_mode(pdata->port_mode[1]) ||
 888                 is_ehci_tll_mode(pdata->port_mode[2]) ||
 889                 (is_ohci_port(pdata->port_mode[0])) ||
 890                 (is_ohci_port(pdata->port_mode[1])) ||
 891                 (is_ohci_port(pdata->port_mode[2]))) {
 892
 893                 /* Enable UTMI mode for required TLL channels */
 894                 if (is_omap_usbhs_rev2(omap))
 895                         usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT);
 896                 else
 897                         usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT);
 898         }
 899
 900         if (pdata->ehci_data->phy_reset) {
 901                 /* Hold the PHY in RESET for enough time till
 902                  * PHY is settled and ready
 903                  */
 904                 udelay(10);
 905
 906                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 907                         gpio_set_value
 908                                 (pdata->ehci_data->reset_gpio_port[0], 1);
 909
 910                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 911                         gpio_set_value
 912                                 (pdata->ehci_data->reset_gpio_port[1], 1);
 913         }
 914
 915 end_count:
 916         omap->count++;
 917         spin_unlock_irqrestore(&omap->lock, flags);
 918         return 0;
 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         spin_unlock_irqrestore(&omap->lock, flags);
 935         return ret;
 936 }
 937
 938 static void usbhs_disable(struct device *dev)
 939 {
 940         struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
 941         struct usbhs_omap_platform_data *pdata = &omap->platdata;
 942         unsigned long                   flags = 0;
 943         unsigned long                   timeout;
 944
 945         dev_dbg(dev, "stopping TI HSUSB Controller\n");
 946
 947         spin_lock_irqsave(&omap->lock, flags);
 948
 949         if (omap->count == 0)
 950                 goto end_disble;
 951
 952         omap->count--;
 953
 954         if (omap->count != 0)
 955                 goto end_disble;
 956
 957         /* Reset OMAP modules for insmod/rmmod to work */
 958         usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
 959                         is_omap_usbhs_rev2(omap) ?
 960                         OMAP4_UHH_SYSCONFIG_SOFTRESET :
 961                         OMAP_UHH_SYSCONFIG_SOFTRESET);
 962
 963         timeout = jiffies + msecs_to_jiffies(100);
 964         while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
 965                                 & (1 << 0))) {
 966                 cpu_relax();
 967
 968                 if (time_after(jiffies, timeout))
 969                         dev_dbg(dev, "operation timed out\n");
 970         }
 971
 972         while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
 973                                 & (1 << 1))) {
 974                 cpu_relax();
 975
 976                 if (time_after(jiffies, timeout))
 977                         dev_dbg(dev, "operation timed out\n");
 978         }
 979
 980         while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
 981                                 & (1 << 2))) {
 982                 cpu_relax();
 983
 984                 if (time_after(jiffies, timeout))
 985                         dev_dbg(dev, "operation timed out\n");
 986         }
 987
 988         usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
 989
 990         while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
 991                                 & (1 << 0))) {
 992                 cpu_relax();
 993
 994                 if (time_after(jiffies, timeout))
 995                         dev_dbg(dev, "operation timed out\n");
 996         }
 997
 998         if (is_omap_usbhs_rev2(omap)) {
 999                 if (is_ehci_tll_mode(pdata->port_mode[0]))
1000                         clk_enable(omap->usbtll_p1_fck);
1001                 if (is_ehci_tll_mode(pdata->port_mode[1]))
1002                         clk_enable(omap->usbtll_p2_fck);
1003                 clk_disable(omap->utmi_p2_fck);
1004                 clk_disable(omap->utmi_p1_fck);
1005         }
1006
1007         clk_disable(omap->usbtll_ick);
1008         clk_disable(omap->usbtll_fck);
1009         clk_disable(omap->usbhost_fs_fck);
1010         clk_disable(omap->usbhost_hs_fck);
1011         clk_disable(omap->usbhost_ick);
1012
1013         /* The gpio_free migh sleep; so unlock the spinlock */
1014         spin_unlock_irqrestore(&omap->lock, flags);
1015
1016         if (pdata->ehci_data->phy_reset) {
1017                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
1018                         gpio_free(pdata->ehci_data->reset_gpio_port[0]);
1019
1020                 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
1021                         gpio_free(pdata->ehci_data->reset_gpio_port[1]);
1022         }
1023         return;
1024
1025 end_disble:
1026         spin_unlock_irqrestore(&omap->lock, flags);
1027 }
1028
1029 int omap_usbhs_enable(struct device *dev)
1030 {
1031         return  usbhs_enable(dev->parent);
1032 }
1033 EXPORT_SYMBOL_GPL(omap_usbhs_enable);
1034
1035 void omap_usbhs_disable(struct device *dev)
1036 {
1037         usbhs_disable(dev->parent);
1038 }
1039 EXPORT_SYMBOL_GPL(omap_usbhs_disable);
1040
1041 static struct platform_driver usbhs_omap_driver = {
1042         .driver = {
1043                 .name           = (char *)usbhs_driver_name,
1044                 .owner          = THIS_MODULE,
1045         },
1046         .remove         = __exit_p(usbhs_omap_remove),
1047 };
1048
1049 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
1050 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
1051 MODULE_LICENSE("GPL v2");
1052 MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI");
1053
1054 static int __init omap_usbhs_drvinit(void)
1055 {
1056         return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe);
1057 }
1058
1059 /*
1060  * init before ehci and ohci drivers;
1061  * The usbhs core driver should be initialized much before
1062  * the omap ehci and ohci probe functions are called.
1063  */
1064 fs_initcall(omap_usbhs_drvinit);
1065
1066 static void __exit omap_usbhs_drvexit(void)
1067 {
1068         platform_driver_unregister(&usbhs_omap_driver);
1069 }
1070 module_exit(omap_usbhs_drvexit);