drivers/usb/musb/musb_core.h

   1 /*
   2  * MUSB OTG driver defines
   3  *
   4  * Copyright 2005 Mentor Graphics Corporation
   5  * Copyright (C) 2005-2006 by Texas Instruments
   6  * Copyright (C) 2006-2007 Nokia Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  25  * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  29  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #ifndef __MUSB_CORE_H__
  36 #define __MUSB_CORE_H__
  37
  38 #include <linux/slab.h>
  39 #include <linux/list.h>
  40 #include <linux/interrupt.h>
  41 #include <linux/errno.h>
  42 #include <linux/timer.h>
  43 #include <linux/clk.h>
  44 #include <linux/device.h>
  45 #include <linux/usb/ch9.h>
  46 #include <linux/usb/gadget.h>
  47 #include <linux/usb.h>
  48 #include <linux/usb/otg.h>
  49 #include <linux/usb/musb.h>
  50
  51 struct musb;
  52 struct musb_hw_ep;
  53 struct musb_ep;
  54
  55 /* Helper defines for struct musb->hwvers */
  56 #define MUSB_HWVERS_MAJOR(x)    ((x >> 10) & 0x1f)
  57 #define MUSB_HWVERS_MINOR(x)    (x & 0x3ff)
  58 #define MUSB_HWVERS_RC          0x8000
  59 #define MUSB_HWVERS_1300        0x52C
  60 #define MUSB_HWVERS_1400        0x590
  61 #define MUSB_HWVERS_1800        0x720
  62 #define MUSB_HWVERS_1900        0x784
  63 #define MUSB_HWVERS_2000        0x800
  64
  65 #include "musb_debug.h"
  66 #include "musb_dma.h"
  67
  68 #include "musb_io.h"
  69 #include "musb_regs.h"
  70
  71 #include "musb_gadget.h"
  72 #include <linux/usb/hcd.h>
  73 #include "musb_host.h"
  74
  75
  76
  77 #ifdef CONFIG_USB_MUSB_OTG
  78
  79 #define is_peripheral_enabled(musb)     ((musb)->board_mode != MUSB_HOST)
  80 #define is_host_enabled(musb)           ((musb)->board_mode != MUSB_PERIPHERAL)
  81 #define is_otg_enabled(musb)            ((musb)->board_mode == MUSB_OTG)
  82
  83 /* NOTE:  otg and peripheral-only state machines start at B_IDLE.
  84  * OTG or host-only go to A_IDLE when ID is sensed.
  85  */
  86 #define is_peripheral_active(m)         (!(m)->is_host)
  87 #define is_host_active(m)               ((m)->is_host)
  88
  89 #else
  90 #define is_peripheral_enabled(musb)     is_peripheral_capable()
  91 #define is_host_enabled(musb)           is_host_capable()
  92 #define is_otg_enabled(musb)            0
  93
  94 #define is_peripheral_active(musb)      is_peripheral_capable()
  95 #define is_host_active(musb)            is_host_capable()
  96 #endif
  97
  98 #if defined(CONFIG_USB_MUSB_OTG) || defined(CONFIG_USB_MUSB_PERIPHERAL)
  99 /* for some reason, the "select USB_GADGET_MUSB_HDRC" doesn't always
 100  * override that choice selection (often USB_GADGET_DUMMY_HCD).
 101  */
 102 #ifndef CONFIG_USB_GADGET_MUSB_HDRC
 103 #error bogus Kconfig output ... select CONFIG_USB_GADGET_MUSB_HDRC
 104 #endif
 105 #endif  /* need MUSB gadget selection */
 106
 107 #ifndef CONFIG_HAVE_CLK
 108 /* Dummy stub for clk framework */
 109 #define clk_get(dev, id)        NULL
 110 #define clk_put(clock)          do {} while (0)
 111 #define clk_enable(clock)       do {} while (0)
 112 #define clk_disable(clock)      do {} while (0)
 113 #endif
 114
 115 #ifdef CONFIG_PROC_FS
 116 #include <linux/fs.h>
 117 #define MUSB_CONFIG_PROC_FS
 118 #endif
 119
 120 /****************************** PERIPHERAL ROLE *****************************/
 121
 122 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 123
 124 #define is_peripheral_capable() (1)
 125
 126 extern irqreturn_t musb_g_ep0_irq(struct musb *);
 127 extern void musb_g_tx(struct musb *, u8);
 128 extern void musb_g_rx(struct musb *, u8);
 129 extern void musb_g_reset(struct musb *);
 130 extern void musb_g_suspend(struct musb *);
 131 extern void musb_g_resume(struct musb *);
 132 extern void musb_g_wakeup(struct musb *);
 133 extern void musb_g_disconnect(struct musb *);
 134
 135 #else
 136
 137 #define is_peripheral_capable() (0)
 138
 139 static inline irqreturn_t musb_g_ep0_irq(struct musb *m) { return IRQ_NONE; }
 140 static inline void musb_g_reset(struct musb *m) {}
 141 static inline void musb_g_suspend(struct musb *m) {}
 142 static inline void musb_g_resume(struct musb *m) {}
 143 static inline void musb_g_wakeup(struct musb *m) {}
 144 static inline void musb_g_disconnect(struct musb *m) {}
 145
 146 #endif
 147
 148 /****************************** HOST ROLE ***********************************/
 149
 150 #ifdef CONFIG_USB_MUSB_HDRC_HCD
 151
 152 #define is_host_capable()       (1)
 153
 154 extern irqreturn_t musb_h_ep0_irq(struct musb *);
 155 extern void musb_host_tx(struct musb *, u8);
 156 extern void musb_host_rx(struct musb *, u8);
 157
 158 #else
 159
 160 #define is_host_capable()       (0)
 161
 162 static inline irqreturn_t musb_h_ep0_irq(struct musb *m) { return IRQ_NONE; }
 163 static inline void musb_host_tx(struct musb *m, u8 e) {}
 164 static inline void musb_host_rx(struct musb *m, u8 e) {}
 165
 166 #endif
 167
 168
 169 /****************************** CONSTANTS ********************************/
 170
 171 #ifndef MUSB_C_NUM_EPS
 172 #define MUSB_C_NUM_EPS ((u8)16)
 173 #endif
 174
 175 #ifndef MUSB_MAX_END0_PACKET
 176 #define MUSB_MAX_END0_PACKET ((u16)MUSB_EP0_FIFOSIZE)
 177 #endif
 178
 179 /* host side ep0 states */
 180 enum musb_h_ep0_state {
 181         MUSB_EP0_IDLE,
 182         MUSB_EP0_START,                 /* expect ack of setup */
 183         MUSB_EP0_IN,                    /* expect IN DATA */
 184         MUSB_EP0_OUT,                   /* expect ack of OUT DATA */
 185         MUSB_EP0_STATUS,                /* expect ack of STATUS */
 186 } __attribute__ ((packed));
 187
 188 /* peripheral side ep0 states */
 189 enum musb_g_ep0_state {
 190         MUSB_EP0_STAGE_IDLE,            /* idle, waiting for SETUP */
 191         MUSB_EP0_STAGE_SETUP,           /* received SETUP */
 192         MUSB_EP0_STAGE_TX,              /* IN data */
 193         MUSB_EP0_STAGE_RX,              /* OUT data */
 194         MUSB_EP0_STAGE_STATUSIN,        /* (after OUT data) */
 195         MUSB_EP0_STAGE_STATUSOUT,       /* (after IN data) */
 196         MUSB_EP0_STAGE_ACKWAIT,         /* after zlp, before statusin */
 197 } __attribute__ ((packed));
 198
 199 /*
 200  * OTG protocol constants.  See USB OTG 1.3 spec,
 201  * sections 5.5 "Device Timings" and 6.6.5 "Timers".
 202  */
 203 #define OTG_TIME_A_WAIT_VRISE   100             /* msec (max) */
 204 #define OTG_TIME_A_WAIT_BCON    1100            /* min 1 second */
 205 #define OTG_TIME_A_AIDL_BDIS    200             /* min 200 msec */
 206 #define OTG_TIME_B_ASE0_BRST    100             /* min 3.125 ms */
 207
 208
 209 /*************************** REGISTER ACCESS ********************************/
 210
 211 /* Endpoint registers (other than dynfifo setup) can be accessed either
 212  * directly with the "flat" model, or after setting up an index register.
 213  */
 214
 215 #if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_ARCH_OMAP2430) \
 216                 || defined(CONFIG_ARCH_OMAP3430) || defined(CONFIG_BLACKFIN) \
 217                 || defined(CONFIG_ARCH_OMAP4)
 218 /* REVISIT indexed access seemed to
 219  * misbehave (on DaVinci) for at least peripheral IN ...
 220  */
 221 #define MUSB_FLAT_REG
 222 #endif
 223
 224 /* TUSB mapping: "flat" plus ep0 special cases */
 225 #if     defined(CONFIG_USB_MUSB_TUSB6010)
 226 #define musb_ep_select(_mbase, _epnum) \
 227         musb_writeb((_mbase), MUSB_INDEX, (_epnum))
 228 #define MUSB_EP_OFFSET                  MUSB_TUSB_OFFSET
 229
 230 /* "flat" mapping: each endpoint has its own i/o address */
 231 #elif   defined(MUSB_FLAT_REG)
 232 #define musb_ep_select(_mbase, _epnum)  (((void)(_mbase)), ((void)(_epnum)))
 233 #define MUSB_EP_OFFSET                  MUSB_FLAT_OFFSET
 234
 235 /* "indexed" mapping: INDEX register controls register bank select */
 236 #else
 237 #define musb_ep_select(_mbase, _epnum) \
 238         musb_writeb((_mbase), MUSB_INDEX, (_epnum))
 239 #define MUSB_EP_OFFSET                  MUSB_INDEXED_OFFSET
 240 #endif
 241
 242 /****************************** FUNCTIONS ********************************/
 243
 244 #define MUSB_HST_MODE(_musb)\
 245         { (_musb)->is_host = true; }
 246 #define MUSB_DEV_MODE(_musb) \
 247         { (_musb)->is_host = false; }
 248
 249 #define test_devctl_hst_mode(_x) \
 250         (musb_readb((_x)->mregs, MUSB_DEVCTL)&MUSB_DEVCTL_HM)
 251
 252 #define MUSB_MODE(musb) ((musb)->is_host ? "Host" : "Peripheral")
 253
 254 /******************************** TYPES *************************************/
 255
 256 /**
 257  * struct musb_platform_ops - Operations passed to musb_core by HW glue layer
 258  * @init:       turns on clocks, sets up platform-specific registers, etc
 259  * @exit:       undoes @init
 260  * @set_mode:   forcefully changes operating mode
 261  * @try_ilde:   tries to idle the IP
 262  * @vbus_status: returns vbus status if possible
 263  * @set_vbus:   forces vbus status
 264  */
 265 struct musb_platform_ops {
 266         int     (*init)(struct musb *musb);
 267         int     (*exit)(struct musb *musb);
 268
 269         void    (*enable)(struct musb *musb);
 270         void    (*disable)(struct musb *musb);
 271
 272         int     (*set_mode)(struct musb *musb, u8 mode);
 273         void    (*try_idle)(struct musb *musb, unsigned long timeout);
 274
 275         int     (*vbus_status)(struct musb *musb);
 276         void    (*set_vbus)(struct musb *musb, int on);
 277 };
 278
 279 /*
 280  * struct musb_hw_ep - endpoint hardware (bidirectional)
 281  *
 282  * Ordered slightly for better cacheline locality.
 283  */
 284 struct musb_hw_ep {
 285         struct musb             *musb;
 286         void __iomem            *fifo;
 287         void __iomem            *regs;
 288
 289 #ifdef CONFIG_USB_MUSB_TUSB6010
 290         void __iomem            *conf;
 291 #endif
 292
 293         /* index in musb->endpoints[]  */
 294         u8                      epnum;
 295
 296         /* hardware configuration, possibly dynamic */
 297         bool                    is_shared_fifo;
 298         bool                    tx_double_buffered;
 299         bool                    rx_double_buffered;
 300         u16                     max_packet_sz_tx;
 301         u16                     max_packet_sz_rx;
 302
 303         struct dma_channel      *tx_channel;
 304         struct dma_channel      *rx_channel;
 305
 306 #ifdef CONFIG_USB_MUSB_TUSB6010
 307         /* TUSB has "asynchronous" and "synchronous" dma modes */
 308         dma_addr_t              fifo_async;
 309         dma_addr_t              fifo_sync;
 310         void __iomem            *fifo_sync_va;
 311 #endif
 312
 313 #ifdef CONFIG_USB_MUSB_HDRC_HCD
 314         void __iomem            *target_regs;
 315
 316         /* currently scheduled peripheral endpoint */
 317         struct musb_qh          *in_qh;
 318         struct musb_qh          *out_qh;
 319
 320         u8                      rx_reinit;
 321         u8                      tx_reinit;
 322 #endif
 323
 324 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 325         /* peripheral side */
 326         struct musb_ep          ep_in;                  /* TX */
 327         struct musb_ep          ep_out;                 /* RX */
 328 #endif
 329 };
 330
 331 static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
 332 {
 333 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 334         return next_request(&hw_ep->ep_in);
 335 #else
 336         return NULL;
 337 #endif
 338 }
 339
 340 static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
 341 {
 342 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 343         return next_request(&hw_ep->ep_out);
 344 #else
 345         return NULL;
 346 #endif
 347 }
 348
 349 struct musb_csr_regs {
 350         /* FIFO registers */
 351         u16 txmaxp, txcsr, rxmaxp, rxcsr;
 352         u16 rxfifoadd, txfifoadd;
 353         u8 txtype, txinterval, rxtype, rxinterval;
 354         u8 rxfifosz, txfifosz;
 355         u8 txfunaddr, txhubaddr, txhubport;
 356         u8 rxfunaddr, rxhubaddr, rxhubport;
 357 };
 358
 359 struct musb_context_registers {
 360
 361 #if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
 362     defined(CONFIG_ARCH_OMAP4)
 363         u32 otg_sysconfig, otg_forcestandby;
 364 #endif
 365         u8 power;
 366         u16 intrtxe, intrrxe;
 367         u8 intrusbe;
 368         u16 frame;
 369         u8 index, testmode;
 370
 371         u8 devctl, busctl, misc;
 372
 373         struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
 374 };
 375
 376 /*
 377  * struct musb - Driver instance data.
 378  */
 379 struct musb {
 380         /* device lock */
 381         spinlock_t              lock;
 382
 383         const struct musb_platform_ops *ops;
 384         struct musb_context_registers context;
 385
 386         irqreturn_t             (*isr)(int, void *);
 387         struct work_struct      irq_work;
 388         u16                     hwvers;
 389
 390 /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
 391 #define MUSB_PORT_STAT_RESUME   (1 << 31)
 392
 393         u32                     port1_status;
 394
 395 #ifdef CONFIG_USB_MUSB_HDRC_HCD
 396         unsigned long           rh_timer;
 397
 398         enum musb_h_ep0_state   ep0_stage;
 399
 400         /* bulk traffic normally dedicates endpoint hardware, and each
 401          * direction has its own ring of host side endpoints.
 402          * we try to progress the transfer at the head of each endpoint's
 403          * queue until it completes or NAKs too much; then we try the next
 404          * endpoint.
 405          */
 406         struct musb_hw_ep       *bulk_ep;
 407
 408         struct list_head        control;        /* of musb_qh */
 409         struct list_head        in_bulk;        /* of musb_qh */
 410         struct list_head        out_bulk;       /* of musb_qh */
 411
 412         struct timer_list       otg_timer;
 413 #endif
 414         struct notifier_block   nb;
 415
 416         struct dma_controller   *dma_controller;
 417
 418         struct device           *controller;
 419         void __iomem            *ctrl_base;
 420         void __iomem            *mregs;
 421
 422 #ifdef CONFIG_USB_MUSB_TUSB6010
 423         dma_addr_t              async;
 424         dma_addr_t              sync;
 425         void __iomem            *sync_va;
 426 #endif
 427
 428         /* passed down from chip/board specific irq handlers */
 429         u8                      int_usb;
 430         u16                     int_rx;
 431         u16                     int_tx;
 432
 433         struct otg_transceiver  *xceiv;
 434
 435         int nIrq;
 436         unsigned                irq_wake:1;
 437
 438         struct musb_hw_ep        endpoints[MUSB_C_NUM_EPS];
 439 #define control_ep              endpoints
 440
 441 #define VBUSERR_RETRY_COUNT     3
 442         u16                     vbuserr_retry;
 443         u16 epmask;
 444         u8 nr_endpoints;
 445
 446         u8 board_mode;          /* enum musb_mode */
 447         int                     (*board_set_power)(int state);
 448
 449         u8                      min_power;      /* vbus for periph, in mA/2 */
 450
 451         bool                    is_host;
 452
 453         int                     a_wait_bcon;    /* VBUS timeout in msecs */
 454         unsigned long           idle_timeout;   /* Next timeout in jiffies */
 455
 456         /* active means connected and not suspended */
 457         unsigned                is_active:1;
 458
 459         unsigned is_multipoint:1;
 460         unsigned ignore_disconnect:1;   /* during bus resets */
 461
 462         unsigned                hb_iso_rx:1;    /* high bandwidth iso rx? */
 463         unsigned                hb_iso_tx:1;    /* high bandwidth iso tx? */
 464         unsigned                dyn_fifo:1;     /* dynamic FIFO supported? */
 465
 466         unsigned                bulk_split:1;
 467 #define can_bulk_split(musb,type) \
 468         (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_split)
 469
 470         unsigned                bulk_combine:1;
 471 #define can_bulk_combine(musb,type) \
 472         (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_combine)
 473
 474 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 475         /* is_suspended means USB B_PERIPHERAL suspend */
 476         unsigned                is_suspended:1;
 477
 478         /* may_wakeup means remote wakeup is enabled */
 479         unsigned                may_wakeup:1;
 480
 481         /* is_self_powered is reported in device status and the
 482          * config descriptor.  is_bus_powered means B_PERIPHERAL
 483          * draws some VBUS current; both can be true.
 484          */
 485         unsigned                is_self_powered:1;
 486         unsigned                is_bus_powered:1;
 487
 488         unsigned                set_address:1;
 489         unsigned                test_mode:1;
 490         unsigned                softconnect:1;
 491
 492         u8                      address;
 493         u8                      test_mode_nr;
 494         u16                     ackpend;                /* ep0 */
 495         enum musb_g_ep0_state   ep0_state;
 496         struct usb_gadget       g;                      /* the gadget */
 497         struct usb_gadget_driver *gadget_driver;        /* its driver */
 498 #endif
 499
 500         struct musb_hdrc_config *config;
 501
 502 #ifdef MUSB_CONFIG_PROC_FS
 503         struct proc_dir_entry *proc_entry;
 504 #endif
 505 };
 506
 507 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 508 static inline struct musb *gadget_to_musb(struct usb_gadget *g)
 509 {
 510         return container_of(g, struct musb, g);
 511 }
 512 #endif
 513
 514 #ifdef CONFIG_BLACKFIN
 515 static inline int musb_read_fifosize(struct musb *musb,
 516                 struct musb_hw_ep *hw_ep, u8 epnum)
 517 {
 518         musb->nr_endpoints++;
 519         musb->epmask |= (1 << epnum);
 520
 521         if (epnum < 5) {
 522                 hw_ep->max_packet_sz_tx = 128;
 523                 hw_ep->max_packet_sz_rx = 128;
 524         } else {
 525                 hw_ep->max_packet_sz_tx = 1024;
 526                 hw_ep->max_packet_sz_rx = 1024;
 527         }
 528         hw_ep->is_shared_fifo = false;
 529
 530         return 0;
 531 }
 532
 533 static inline void musb_configure_ep0(struct musb *musb)
 534 {
 535         musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
 536         musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
 537         musb->endpoints[0].is_shared_fifo = true;
 538 }
 539
 540 #else
 541
 542 static inline int musb_read_fifosize(struct musb *musb,
 543                 struct musb_hw_ep *hw_ep, u8 epnum)
 544 {
 545         void *mbase = musb->mregs;
 546         u8 reg = 0;
 547
 548         /* read from core using indexed model */
 549         reg = musb_readb(mbase, MUSB_EP_OFFSET(epnum, MUSB_FIFOSIZE));
 550         /* 0's returned when no more endpoints */
 551         if (!reg)
 552                 return -ENODEV;
 553
 554         musb->nr_endpoints++;
 555         musb->epmask |= (1 << epnum);
 556
 557         hw_ep->max_packet_sz_tx = 1 << (reg & 0x0f);
 558
 559         /* shared TX/RX FIFO? */
 560         if ((reg & 0xf0) == 0xf0) {
 561                 hw_ep->max_packet_sz_rx = hw_ep->max_packet_sz_tx;
 562                 hw_ep->is_shared_fifo = true;
 563                 return 0;
 564         } else {
 565                 hw_ep->max_packet_sz_rx = 1 << ((reg & 0xf0) >> 4);
 566                 hw_ep->is_shared_fifo = false;
 567         }
 568
 569         return 0;
 570 }
 571
 572 static inline void musb_configure_ep0(struct musb *musb)
 573 {
 574         musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
 575         musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
 576         musb->endpoints[0].is_shared_fifo = true;
 577 }
 578 #endif /* CONFIG_BLACKFIN */
 579
 580
 581 /***************************** Glue it together *****************************/
 582
 583 extern const char musb_driver_name[];
 584
 585 extern void musb_start(struct musb *musb);
 586 extern void musb_stop(struct musb *musb);
 587
 588 extern void musb_write_fifo(struct musb_hw_ep *ep, u16 len, const u8 *src);
 589 extern void musb_read_fifo(struct musb_hw_ep *ep, u16 len, u8 *dst);
 590
 591 extern void musb_load_testpacket(struct musb *);
 592
 593 extern irqreturn_t musb_interrupt(struct musb *);
 594
 595 extern void musb_hnp_stop(struct musb *musb);
 596
 597 static inline void musb_platform_set_vbus(struct musb *musb, int is_on)
 598 {
 599         if (musb->ops->set_vbus)
 600                 musb->ops->set_vbus(musb, is_on);
 601 }
 602
 603 static inline void musb_platform_enable(struct musb *musb)
 604 {
 605         if (musb->ops->enable)
 606                 musb->ops->enable(musb);
 607 }
 608
 609 static inline void musb_platform_disable(struct musb *musb)
 610 {
 611         if (musb->ops->disable)
 612                 musb->ops->disable(musb);
 613 }
 614
 615 static inline int musb_platform_set_mode(struct musb *musb, u8 mode)
 616 {
 617         if (!musb->ops->set_mode)
 618                 return 0;
 619
 620         return musb->ops->set_mode(musb, mode);
 621 }
 622
 623 static inline void musb_platform_try_idle(struct musb *musb,
 624                 unsigned long timeout)
 625 {
 626         if (musb->ops->try_idle)
 627                 musb->ops->try_idle(musb, timeout);
 628 }
 629
 630 static inline int musb_platform_get_vbus_status(struct musb *musb)
 631 {
 632         if (!musb->ops->vbus_status)
 633                 return 0;
 634
 635         return musb->ops->vbus_status(musb);
 636 }
 637
 638 static inline int musb_platform_init(struct musb *musb)
 639 {
 640         if (!musb->ops->init)
 641                 return -EINVAL;
 642
 643         return musb->ops->init(musb);
 644 }
 645
 646 static inline int musb_platform_exit(struct musb *musb)
 647 {
 648         if (!musb->ops->exit)
 649                 return -EINVAL;
 650
 651         return musb->ops->exit(musb);
 652 }
 653
 654 #endif  /* __MUSB_CORE_H__ */