1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * TUSB6010 USB 2.0 OTG Dual Role controller 4 * 5 * Copyright (C) 2006 Nokia Corporation 6 * Tony Lindgren <tony@atomide.com> 7 * 8 * Notes: 9 * - Driver assumes that interface to external host (main CPU) is 10 * configured for NOR FLASH interface instead of VLYNQ serial 11 * interface. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/errno.h> 17 #include <linux/err.h> 18 #include <linux/prefetch.h> 19 #include <linux/usb.h> 20 #include <linux/irq.h> 21 #include <linux/io.h> 22 #include <linux/device.h> 23 #include <linux/platform_device.h> 24 #include <linux/dma-mapping.h> 25 #include <linux/usb/usb_phy_generic.h> 26 27 #include "musb_core.h" 28 29 struct tusb6010_glue { 30 struct device *dev; 31 struct platform_device *musb; 32 struct platform_device *phy; 33 }; 34 35 static void tusb_musb_set_vbus(struct musb *musb, int is_on); 36 37 #define TUSB_REV_MAJOR(reg_val) ((reg_val >> 4) & 0xf) 38 #define TUSB_REV_MINOR(reg_val) (reg_val & 0xf) 39 40 /* 41 * Checks the revision. We need to use the DMA register as 3.0 does not 42 * have correct versions for TUSB_PRCM_REV or TUSB_INT_CTRL_REV. 43 */ 44 static u8 tusb_get_revision(struct musb *musb) 45 { 46 void __iomem *tbase = musb->ctrl_base; 47 u32 die_id; 48 u8 rev; 49 50 rev = musb_readl(tbase, TUSB_DMA_CTRL_REV) & 0xff; 51 if (TUSB_REV_MAJOR(rev) == 3) { 52 die_id = TUSB_DIDR1_HI_CHIP_REV(musb_readl(tbase, 53 TUSB_DIDR1_HI)); 54 if (die_id >= TUSB_DIDR1_HI_REV_31) 55 rev |= 1; 56 } 57 58 return rev; 59 } 60 61 static void tusb_print_revision(struct musb *musb) 62 { 63 void __iomem *tbase = musb->ctrl_base; 64 u8 rev; 65 66 rev = musb->tusb_revision; 67 68 pr_info("tusb: %s%i.%i %s%i.%i %s%i.%i %s%i.%i %s%i %s%i.%i\n", 69 "prcm", 70 TUSB_REV_MAJOR(musb_readl(tbase, TUSB_PRCM_REV)), 71 TUSB_REV_MINOR(musb_readl(tbase, TUSB_PRCM_REV)), 72 "int", 73 TUSB_REV_MAJOR(musb_readl(tbase, TUSB_INT_CTRL_REV)), 74 TUSB_REV_MINOR(musb_readl(tbase, TUSB_INT_CTRL_REV)), 75 "gpio", 76 TUSB_REV_MAJOR(musb_readl(tbase, TUSB_GPIO_REV)), 77 TUSB_REV_MINOR(musb_readl(tbase, TUSB_GPIO_REV)), 78 "dma", 79 TUSB_REV_MAJOR(musb_readl(tbase, TUSB_DMA_CTRL_REV)), 80 TUSB_REV_MINOR(musb_readl(tbase, TUSB_DMA_CTRL_REV)), 81 "dieid", 82 TUSB_DIDR1_HI_CHIP_REV(musb_readl(tbase, TUSB_DIDR1_HI)), 83 "rev", 84 TUSB_REV_MAJOR(rev), TUSB_REV_MINOR(rev)); 85 } 86 87 #define WBUS_QUIRK_MASK (TUSB_PHY_OTG_CTRL_TESTM2 | TUSB_PHY_OTG_CTRL_TESTM1 \ 88 | TUSB_PHY_OTG_CTRL_TESTM0) 89 90 /* 91 * Workaround for spontaneous WBUS wake-up issue #2 for tusb3.0. 92 * Disables power detection in PHY for the duration of idle. 93 */ 94 static void tusb_wbus_quirk(struct musb *musb, int enabled) 95 { 96 void __iomem *tbase = musb->ctrl_base; 97 static u32 phy_otg_ctrl, phy_otg_ena; 98 u32 tmp; 99 100 if (enabled) { 101 phy_otg_ctrl = musb_readl(tbase, TUSB_PHY_OTG_CTRL); 102 phy_otg_ena = musb_readl(tbase, TUSB_PHY_OTG_CTRL_ENABLE); 103 tmp = TUSB_PHY_OTG_CTRL_WRPROTECT 104 | phy_otg_ena | WBUS_QUIRK_MASK; 105 musb_writel(tbase, TUSB_PHY_OTG_CTRL, tmp); 106 tmp = phy_otg_ena & ~WBUS_QUIRK_MASK; 107 tmp |= TUSB_PHY_OTG_CTRL_WRPROTECT | TUSB_PHY_OTG_CTRL_TESTM2; 108 musb_writel(tbase, TUSB_PHY_OTG_CTRL_ENABLE, tmp); 109 dev_dbg(musb->controller, "Enabled tusb wbus quirk ctrl %08x ena %08x\n", 110 musb_readl(tbase, TUSB_PHY_OTG_CTRL), 111 musb_readl(tbase, TUSB_PHY_OTG_CTRL_ENABLE)); 112 } else if (musb_readl(tbase, TUSB_PHY_OTG_CTRL_ENABLE) 113 & TUSB_PHY_OTG_CTRL_TESTM2) { 114 tmp = TUSB_PHY_OTG_CTRL_WRPROTECT | phy_otg_ctrl; 115 musb_writel(tbase, TUSB_PHY_OTG_CTRL, tmp); 116 tmp = TUSB_PHY_OTG_CTRL_WRPROTECT | phy_otg_ena; 117 musb_writel(tbase, TUSB_PHY_OTG_CTRL_ENABLE, tmp); 118 dev_dbg(musb->controller, "Disabled tusb wbus quirk ctrl %08x ena %08x\n", 119 musb_readl(tbase, TUSB_PHY_OTG_CTRL), 120 musb_readl(tbase, TUSB_PHY_OTG_CTRL_ENABLE)); 121 phy_otg_ctrl = 0; 122 phy_otg_ena = 0; 123 } 124 } 125 126 static u32 tusb_fifo_offset(u8 epnum) 127 { 128 return 0x200 + (epnum * 0x20); 129 } 130 131 static u32 tusb_ep_offset(u8 epnum, u16 offset) 132 { 133 return 0x10 + offset; 134 } 135 136 /* TUSB mapping: "flat" plus ep0 special cases */ 137 static void tusb_ep_select(void __iomem *mbase, u8 epnum) 138 { 139 musb_writeb(mbase, MUSB_INDEX, epnum); 140 } 141 142 /* 143 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum. 144 */ 145 static u8 tusb_readb(void __iomem *addr, u32 offset) 146 { 147 u16 tmp; 148 u8 val; 149 150 tmp = __raw_readw(addr + (offset & ~1)); 151 if (offset & 1) 152 val = (tmp >> 8); 153 else 154 val = tmp & 0xff; 155 156 return val; 157 } 158 159 static void tusb_writeb(void __iomem *addr, u32 offset, u8 data) 160 { 161 u16 tmp; 162 163 tmp = __raw_readw(addr + (offset & ~1)); 164 if (offset & 1) 165 tmp = (data << 8) | (tmp & 0xff); 166 else 167 tmp = (tmp & 0xff00) | data; 168 169 __raw_writew(tmp, addr + (offset & ~1)); 170 } 171 172 /* 173 * TUSB 6010 may use a parallel bus that doesn't support byte ops; 174 * so both loading and unloading FIFOs need explicit byte counts. 175 */ 176 177 static inline void 178 tusb_fifo_write_unaligned(void __iomem *fifo, const u8 *buf, u16 len) 179 { 180 u32 val; 181 int i; 182 183 if (len > 4) { 184 for (i = 0; i < (len >> 2); i++) { 185 memcpy(&val, buf, 4); 186 musb_writel(fifo, 0, val); 187 buf += 4; 188 } 189 len %= 4; 190 } 191 if (len > 0) { 192 /* Write the rest 1 - 3 bytes to FIFO */ 193 memcpy(&val, buf, len); 194 musb_writel(fifo, 0, val); 195 } 196 } 197 198 static inline void tusb_fifo_read_unaligned(void __iomem *fifo, 199 void *buf, u16 len) 200 { 201 u32 val; 202 int i; 203 204 if (len > 4) { 205 for (i = 0; i < (len >> 2); i++) { 206 val = musb_readl(fifo, 0); 207 memcpy(buf, &val, 4); 208 buf += 4; 209 } 210 len %= 4; 211 } 212 if (len > 0) { 213 /* Read the rest 1 - 3 bytes from FIFO */ 214 val = musb_readl(fifo, 0); 215 memcpy(buf, &val, len); 216 } 217 } 218 219 static void tusb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf) 220 { 221 struct musb *musb = hw_ep->musb; 222 void __iomem *ep_conf = hw_ep->conf; 223 void __iomem *fifo = hw_ep->fifo; 224 u8 epnum = hw_ep->epnum; 225 226 prefetch(buf); 227 228 dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", 229 'T', epnum, fifo, len, buf); 230 231 if (epnum) 232 musb_writel(ep_conf, TUSB_EP_TX_OFFSET, 233 TUSB_EP_CONFIG_XFR_SIZE(len)); 234 else 235 musb_writel(ep_conf, 0, TUSB_EP0_CONFIG_DIR_TX | 236 TUSB_EP0_CONFIG_XFR_SIZE(len)); 237 238 if (likely((0x01 & (unsigned long) buf) == 0)) { 239 240 /* Best case is 32bit-aligned destination address */ 241 if ((0x02 & (unsigned long) buf) == 0) { 242 if (len >= 4) { 243 iowrite32_rep(fifo, buf, len >> 2); 244 buf += (len & ~0x03); 245 len &= 0x03; 246 } 247 } else { 248 if (len >= 2) { 249 u32 val; 250 int i; 251 252 /* Cannot use writesw, fifo is 32-bit */ 253 for (i = 0; i < (len >> 2); i++) { 254 val = (u32)(*(u16 *)buf); 255 buf += 2; 256 val |= (*(u16 *)buf) << 16; 257 buf += 2; 258 musb_writel(fifo, 0, val); 259 } 260 len &= 0x03; 261 } 262 } 263 } 264 265 if (len > 0) 266 tusb_fifo_write_unaligned(fifo, buf, len); 267 } 268 269 static void tusb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *buf) 270 { 271 struct musb *musb = hw_ep->musb; 272 void __iomem *ep_conf = hw_ep->conf; 273 void __iomem *fifo = hw_ep->fifo; 274 u8 epnum = hw_ep->epnum; 275 276 dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", 277 'R', epnum, fifo, len, buf); 278 279 if (epnum) 280 musb_writel(ep_conf, TUSB_EP_RX_OFFSET, 281 TUSB_EP_CONFIG_XFR_SIZE(len)); 282 else 283 musb_writel(ep_conf, 0, TUSB_EP0_CONFIG_XFR_SIZE(len)); 284 285 if (likely((0x01 & (unsigned long) buf) == 0)) { 286 287 /* Best case is 32bit-aligned destination address */ 288 if ((0x02 & (unsigned long) buf) == 0) { 289 if (len >= 4) { 290 ioread32_rep(fifo, buf, len >> 2); 291 buf += (len & ~0x03); 292 len &= 0x03; 293 } 294 } else { 295 if (len >= 2) { 296 u32 val; 297 int i; 298 299 /* Cannot use readsw, fifo is 32-bit */ 300 for (i = 0; i < (len >> 2); i++) { 301 val = musb_readl(fifo, 0); 302 *(u16 *)buf = (u16)(val & 0xffff); 303 buf += 2; 304 *(u16 *)buf = (u16)(val >> 16); 305 buf += 2; 306 } 307 len &= 0x03; 308 } 309 } 310 } 311 312 if (len > 0) 313 tusb_fifo_read_unaligned(fifo, buf, len); 314 } 315 316 static struct musb *the_musb; 317 318 /* This is used by gadget drivers, and OTG transceiver logic, allowing 319 * at most mA current to be drawn from VBUS during a Default-B session 320 * (that is, while VBUS exceeds 4.4V). In Default-A (including pure host 321 * mode), or low power Default-B sessions, something else supplies power. 322 * Caller must take care of locking. 323 */ 324 static int tusb_draw_power(struct usb_phy *x, unsigned mA) 325 { 326 struct musb *musb = the_musb; 327 void __iomem *tbase = musb->ctrl_base; 328 u32 reg; 329 330 /* tps65030 seems to consume max 100mA, with maybe 60mA available 331 * (measured on one board) for things other than tps and tusb. 332 * 333 * Boards sharing the CPU clock with CLKIN will need to prevent 334 * certain idle sleep states while the USB link is active. 335 * 336 * REVISIT we could use VBUS to supply only _one_ of { 1.5V, 3.3V }. 337 * The actual current usage would be very board-specific. For now, 338 * it's simpler to just use an aggregate (also board-specific). 339 */ 340 if (x->otg->default_a || mA < (musb->min_power << 1)) 341 mA = 0; 342 343 reg = musb_readl(tbase, TUSB_PRCM_MNGMT); 344 if (mA) { 345 musb->is_bus_powered = 1; 346 reg |= TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN; 347 } else { 348 musb->is_bus_powered = 0; 349 reg &= ~(TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN); 350 } 351 musb_writel(tbase, TUSB_PRCM_MNGMT, reg); 352 353 dev_dbg(musb->controller, "draw max %d mA VBUS\n", mA); 354 return 0; 355 } 356 357 /* workaround for issue 13: change clock during chip idle 358 * (to be fixed in rev3 silicon) ... symptoms include disconnect 359 * or looping suspend/resume cycles 360 */ 361 static void tusb_set_clock_source(struct musb *musb, unsigned mode) 362 { 363 void __iomem *tbase = musb->ctrl_base; 364 u32 reg; 365 366 reg = musb_readl(tbase, TUSB_PRCM_CONF); 367 reg &= ~TUSB_PRCM_CONF_SYS_CLKSEL(0x3); 368 369 /* 0 = refclk (clkin, XI) 370 * 1 = PHY 60 MHz (internal PLL) 371 * 2 = not supported 372 * 3 = what? 373 */ 374 if (mode > 0) 375 reg |= TUSB_PRCM_CONF_SYS_CLKSEL(mode & 0x3); 376 377 musb_writel(tbase, TUSB_PRCM_CONF, reg); 378 379 /* FIXME tusb6010_platform_retime(mode == 0); */ 380 } 381 382 /* 383 * Idle TUSB6010 until next wake-up event; NOR access always wakes. 384 * Other code ensures that we idle unless we're connected _and_ the 385 * USB link is not suspended ... and tells us the relevant wakeup 386 * events. SW_EN for voltage is handled separately. 387 */ 388 static void tusb_allow_idle(struct musb *musb, u32 wakeup_enables) 389 { 390 void __iomem *tbase = musb->ctrl_base; 391 u32 reg; 392 393 if ((wakeup_enables & TUSB_PRCM_WBUS) 394 && (musb->tusb_revision == TUSB_REV_30)) 395 tusb_wbus_quirk(musb, 1); 396 397 tusb_set_clock_source(musb, 0); 398 399 wakeup_enables |= TUSB_PRCM_WNORCS; 400 musb_writel(tbase, TUSB_PRCM_WAKEUP_MASK, ~wakeup_enables); 401 402 /* REVISIT writeup of WID implies that if WID set and ID is grounded, 403 * TUSB_PHY_OTG_CTRL.TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP must be cleared. 404 * Presumably that's mostly to save power, hence WID is immaterial ... 405 */ 406 407 reg = musb_readl(tbase, TUSB_PRCM_MNGMT); 408 /* issue 4: when driving vbus, use hipower (vbus_det) comparator */ 409 if (is_host_active(musb)) { 410 reg |= TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN; 411 reg &= ~TUSB_PRCM_MNGMT_OTG_SESS_END_EN; 412 } else { 413 reg |= TUSB_PRCM_MNGMT_OTG_SESS_END_EN; 414 reg &= ~TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN; 415 } 416 reg |= TUSB_PRCM_MNGMT_PM_IDLE | TUSB_PRCM_MNGMT_DEV_IDLE; 417 musb_writel(tbase, TUSB_PRCM_MNGMT, reg); 418 419 dev_dbg(musb->controller, "idle, wake on %02x\n", wakeup_enables); 420 } 421 422 /* 423 * Updates cable VBUS status. Caller must take care of locking. 424 */ 425 static int tusb_musb_vbus_status(struct musb *musb) 426 { 427 void __iomem *tbase = musb->ctrl_base; 428 u32 otg_stat, prcm_mngmt; 429 int ret = 0; 430 431 otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); 432 prcm_mngmt = musb_readl(tbase, TUSB_PRCM_MNGMT); 433 434 /* Temporarily enable VBUS detection if it was disabled for 435 * suspend mode. Unless it's enabled otg_stat and devctl will 436 * not show correct VBUS state. 437 */ 438 if (!(prcm_mngmt & TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN)) { 439 u32 tmp = prcm_mngmt; 440 tmp |= TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN; 441 musb_writel(tbase, TUSB_PRCM_MNGMT, tmp); 442 otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); 443 musb_writel(tbase, TUSB_PRCM_MNGMT, prcm_mngmt); 444 } 445 446 if (otg_stat & TUSB_DEV_OTG_STAT_VBUS_VALID) 447 ret = 1; 448 449 return ret; 450 } 451 452 static void musb_do_idle(struct timer_list *t) 453 { 454 struct musb *musb = from_timer(musb, t, dev_timer); 455 unsigned long flags; 456 457 spin_lock_irqsave(&musb->lock, flags); 458 459 switch (musb->xceiv->otg->state) { 460 case OTG_STATE_A_WAIT_BCON: 461 if ((musb->a_wait_bcon != 0) 462 && (musb->idle_timeout == 0 463 || time_after(jiffies, musb->idle_timeout))) { 464 dev_dbg(musb->controller, "Nothing connected %s, turning off VBUS\n", 465 usb_otg_state_string(musb->xceiv->otg->state)); 466 } 467 /* FALLTHROUGH */ 468 case OTG_STATE_A_IDLE: 469 tusb_musb_set_vbus(musb, 0); 470 default: 471 break; 472 } 473 474 if (!musb->is_active) { 475 u32 wakeups; 476 477 /* wait until hub_wq handles port change status */ 478 if (is_host_active(musb) && (musb->port1_status >> 16)) 479 goto done; 480 481 if (!musb->gadget_driver) { 482 wakeups = 0; 483 } else { 484 wakeups = TUSB_PRCM_WHOSTDISCON 485 | TUSB_PRCM_WBUS 486 | TUSB_PRCM_WVBUS; 487 wakeups |= TUSB_PRCM_WID; 488 } 489 tusb_allow_idle(musb, wakeups); 490 } 491 done: 492 spin_unlock_irqrestore(&musb->lock, flags); 493 } 494 495 /* 496 * Maybe put TUSB6010 into idle mode mode depending on USB link status, 497 * like "disconnected" or "suspended". We'll be woken out of it by 498 * connect, resume, or disconnect. 499 * 500 * Needs to be called as the last function everywhere where there is 501 * register access to TUSB6010 because of NOR flash wake-up. 502 * Caller should own controller spinlock. 503 * 504 * Delay because peripheral enables D+ pullup 3msec after SE0, and 505 * we don't want to treat that full speed J as a wakeup event. 506 * ... peripherals must draw only suspend current after 10 msec. 507 */ 508 static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout) 509 { 510 unsigned long default_timeout = jiffies + msecs_to_jiffies(3); 511 static unsigned long last_timer; 512 513 if (timeout == 0) 514 timeout = default_timeout; 515 516 /* Never idle if active, or when VBUS timeout is not set as host */ 517 if (musb->is_active || ((musb->a_wait_bcon == 0) 518 && (musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON))) { 519 dev_dbg(musb->controller, "%s active, deleting timer\n", 520 usb_otg_state_string(musb->xceiv->otg->state)); 521 del_timer(&musb->dev_timer); 522 last_timer = jiffies; 523 return; 524 } 525 526 if (time_after(last_timer, timeout)) { 527 if (!timer_pending(&musb->dev_timer)) 528 last_timer = timeout; 529 else { 530 dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); 531 return; 532 } 533 } 534 last_timer = timeout; 535 536 dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", 537 usb_otg_state_string(musb->xceiv->otg->state), 538 (unsigned long)jiffies_to_msecs(timeout - jiffies)); 539 mod_timer(&musb->dev_timer, timeout); 540 } 541 542 /* ticks of 60 MHz clock */ 543 #define DEVCLOCK 60000000 544 #define OTG_TIMER_MS(msecs) ((msecs) \ 545 ? (TUSB_DEV_OTG_TIMER_VAL((DEVCLOCK/1000)*(msecs)) \ 546 | TUSB_DEV_OTG_TIMER_ENABLE) \ 547 : 0) 548 549 static void tusb_musb_set_vbus(struct musb *musb, int is_on) 550 { 551 void __iomem *tbase = musb->ctrl_base; 552 u32 conf, prcm, timer; 553 u8 devctl; 554 struct usb_otg *otg = musb->xceiv->otg; 555 556 /* HDRC controls CPEN, but beware current surges during device 557 * connect. They can trigger transient overcurrent conditions 558 * that must be ignored. 559 */ 560 561 prcm = musb_readl(tbase, TUSB_PRCM_MNGMT); 562 conf = musb_readl(tbase, TUSB_DEV_CONF); 563 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); 564 565 if (is_on) { 566 timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE); 567 otg->default_a = 1; 568 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; 569 devctl |= MUSB_DEVCTL_SESSION; 570 571 conf |= TUSB_DEV_CONF_USB_HOST_MODE; 572 MUSB_HST_MODE(musb); 573 } else { 574 u32 otg_stat; 575 576 timer = 0; 577 578 /* If ID pin is grounded, we want to be a_idle */ 579 otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); 580 if (!(otg_stat & TUSB_DEV_OTG_STAT_ID_STATUS)) { 581 switch (musb->xceiv->otg->state) { 582 case OTG_STATE_A_WAIT_VRISE: 583 case OTG_STATE_A_WAIT_BCON: 584 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VFALL; 585 break; 586 case OTG_STATE_A_WAIT_VFALL: 587 musb->xceiv->otg->state = OTG_STATE_A_IDLE; 588 break; 589 default: 590 musb->xceiv->otg->state = OTG_STATE_A_IDLE; 591 } 592 musb->is_active = 0; 593 otg->default_a = 1; 594 MUSB_HST_MODE(musb); 595 } else { 596 musb->is_active = 0; 597 otg->default_a = 0; 598 musb->xceiv->otg->state = OTG_STATE_B_IDLE; 599 MUSB_DEV_MODE(musb); 600 } 601 602 devctl &= ~MUSB_DEVCTL_SESSION; 603 conf &= ~TUSB_DEV_CONF_USB_HOST_MODE; 604 } 605 prcm &= ~(TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN); 606 607 musb_writel(tbase, TUSB_PRCM_MNGMT, prcm); 608 musb_writel(tbase, TUSB_DEV_OTG_TIMER, timer); 609 musb_writel(tbase, TUSB_DEV_CONF, conf); 610 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); 611 612 dev_dbg(musb->controller, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n", 613 usb_otg_state_string(musb->xceiv->otg->state), 614 musb_readb(musb->mregs, MUSB_DEVCTL), 615 musb_readl(tbase, TUSB_DEV_OTG_STAT), 616 conf, prcm); 617 } 618 619 /* 620 * Sets the mode to OTG, peripheral or host by changing the ID detection. 621 * Caller must take care of locking. 622 * 623 * Note that if a mini-A cable is plugged in the ID line will stay down as 624 * the weak ID pull-up is not able to pull the ID up. 625 */ 626 static int tusb_musb_set_mode(struct musb *musb, u8 musb_mode) 627 { 628 void __iomem *tbase = musb->ctrl_base; 629 u32 otg_stat, phy_otg_ctrl, phy_otg_ena, dev_conf; 630 631 otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); 632 phy_otg_ctrl = musb_readl(tbase, TUSB_PHY_OTG_CTRL); 633 phy_otg_ena = musb_readl(tbase, TUSB_PHY_OTG_CTRL_ENABLE); 634 dev_conf = musb_readl(tbase, TUSB_DEV_CONF); 635 636 switch (musb_mode) { 637 638 case MUSB_HOST: /* Disable PHY ID detect, ground ID */ 639 phy_otg_ctrl &= ~TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 640 phy_otg_ena |= TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 641 dev_conf |= TUSB_DEV_CONF_ID_SEL; 642 dev_conf &= ~TUSB_DEV_CONF_SOFT_ID; 643 break; 644 case MUSB_PERIPHERAL: /* Disable PHY ID detect, keep ID pull-up on */ 645 phy_otg_ctrl |= TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 646 phy_otg_ena |= TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 647 dev_conf |= (TUSB_DEV_CONF_ID_SEL | TUSB_DEV_CONF_SOFT_ID); 648 break; 649 case MUSB_OTG: /* Use PHY ID detection */ 650 phy_otg_ctrl |= TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 651 phy_otg_ena |= TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 652 dev_conf &= ~(TUSB_DEV_CONF_ID_SEL | TUSB_DEV_CONF_SOFT_ID); 653 break; 654 655 default: 656 dev_dbg(musb->controller, "Trying to set mode %i\n", musb_mode); 657 return -EINVAL; 658 } 659 660 musb_writel(tbase, TUSB_PHY_OTG_CTRL, 661 TUSB_PHY_OTG_CTRL_WRPROTECT | phy_otg_ctrl); 662 musb_writel(tbase, TUSB_PHY_OTG_CTRL_ENABLE, 663 TUSB_PHY_OTG_CTRL_WRPROTECT | phy_otg_ena); 664 musb_writel(tbase, TUSB_DEV_CONF, dev_conf); 665 666 otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); 667 if ((musb_mode == MUSB_PERIPHERAL) && 668 !(otg_stat & TUSB_DEV_OTG_STAT_ID_STATUS)) 669 INFO("Cannot be peripheral with mini-A cable " 670 "otg_stat: %08x\n", otg_stat); 671 672 return 0; 673 } 674 675 static inline unsigned long 676 tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) 677 { 678 u32 otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); 679 unsigned long idle_timeout = 0; 680 struct usb_otg *otg = musb->xceiv->otg; 681 682 /* ID pin */ 683 if ((int_src & TUSB_INT_SRC_ID_STATUS_CHNG)) { 684 int default_a; 685 686 default_a = !(otg_stat & TUSB_DEV_OTG_STAT_ID_STATUS); 687 dev_dbg(musb->controller, "Default-%c\n", default_a ? 'A' : 'B'); 688 otg->default_a = default_a; 689 tusb_musb_set_vbus(musb, default_a); 690 691 /* Don't allow idling immediately */ 692 if (default_a) 693 idle_timeout = jiffies + (HZ * 3); 694 } 695 696 /* VBUS state change */ 697 if (int_src & TUSB_INT_SRC_VBUS_SENSE_CHNG) { 698 699 /* B-dev state machine: no vbus ~= disconnect */ 700 if (!otg->default_a) { 701 /* ? musb_root_disconnect(musb); */ 702 musb->port1_status &= 703 ~(USB_PORT_STAT_CONNECTION 704 | USB_PORT_STAT_ENABLE 705 | USB_PORT_STAT_LOW_SPEED 706 | USB_PORT_STAT_HIGH_SPEED 707 | USB_PORT_STAT_TEST 708 ); 709 710 if (otg_stat & TUSB_DEV_OTG_STAT_SESS_END) { 711 dev_dbg(musb->controller, "Forcing disconnect (no interrupt)\n"); 712 if (musb->xceiv->otg->state != OTG_STATE_B_IDLE) { 713 /* INTR_DISCONNECT can hide... */ 714 musb->xceiv->otg->state = OTG_STATE_B_IDLE; 715 musb->int_usb |= MUSB_INTR_DISCONNECT; 716 } 717 musb->is_active = 0; 718 } 719 dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", 720 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); 721 idle_timeout = jiffies + (1 * HZ); 722 schedule_delayed_work(&musb->irq_work, 0); 723 724 } else /* A-dev state machine */ { 725 dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", 726 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); 727 728 switch (musb->xceiv->otg->state) { 729 case OTG_STATE_A_IDLE: 730 dev_dbg(musb->controller, "Got SRP, turning on VBUS\n"); 731 musb_platform_set_vbus(musb, 1); 732 733 /* CONNECT can wake if a_wait_bcon is set */ 734 if (musb->a_wait_bcon != 0) 735 musb->is_active = 0; 736 else 737 musb->is_active = 1; 738 739 /* 740 * OPT FS A TD.4.6 needs few seconds for 741 * A_WAIT_VRISE 742 */ 743 idle_timeout = jiffies + (2 * HZ); 744 745 break; 746 case OTG_STATE_A_WAIT_VRISE: 747 /* ignore; A-session-valid < VBUS_VALID/2, 748 * we monitor this with the timer 749 */ 750 break; 751 case OTG_STATE_A_WAIT_VFALL: 752 /* REVISIT this irq triggers during short 753 * spikes caused by enumeration ... 754 */ 755 if (musb->vbuserr_retry) { 756 musb->vbuserr_retry--; 757 tusb_musb_set_vbus(musb, 1); 758 } else { 759 musb->vbuserr_retry 760 = VBUSERR_RETRY_COUNT; 761 tusb_musb_set_vbus(musb, 0); 762 } 763 break; 764 default: 765 break; 766 } 767 } 768 } 769 770 /* OTG timer expiration */ 771 if (int_src & TUSB_INT_SRC_OTG_TIMEOUT) { 772 u8 devctl; 773 774 dev_dbg(musb->controller, "%s timer, %03x\n", 775 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); 776 777 switch (musb->xceiv->otg->state) { 778 case OTG_STATE_A_WAIT_VRISE: 779 /* VBUS has probably been valid for a while now, 780 * but may well have bounced out of range a bit 781 */ 782 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); 783 if (otg_stat & TUSB_DEV_OTG_STAT_VBUS_VALID) { 784 if ((devctl & MUSB_DEVCTL_VBUS) 785 != MUSB_DEVCTL_VBUS) { 786 dev_dbg(musb->controller, "devctl %02x\n", devctl); 787 break; 788 } 789 musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON; 790 musb->is_active = 0; 791 idle_timeout = jiffies 792 + msecs_to_jiffies(musb->a_wait_bcon); 793 } else { 794 /* REVISIT report overcurrent to hub? */ 795 ERR("vbus too slow, devctl %02x\n", devctl); 796 tusb_musb_set_vbus(musb, 0); 797 } 798 break; 799 case OTG_STATE_A_WAIT_BCON: 800 if (musb->a_wait_bcon != 0) 801 idle_timeout = jiffies 802 + msecs_to_jiffies(musb->a_wait_bcon); 803 break; 804 case OTG_STATE_A_SUSPEND: 805 break; 806 case OTG_STATE_B_WAIT_ACON: 807 break; 808 default: 809 break; 810 } 811 } 812 schedule_delayed_work(&musb->irq_work, 0); 813 814 return idle_timeout; 815 } 816 817 static irqreturn_t tusb_musb_interrupt(int irq, void *__hci) 818 { 819 struct musb *musb = __hci; 820 void __iomem *tbase = musb->ctrl_base; 821 unsigned long flags, idle_timeout = 0; 822 u32 int_mask, int_src; 823 824 spin_lock_irqsave(&musb->lock, flags); 825 826 /* Mask all interrupts to allow using both edge and level GPIO irq */ 827 int_mask = musb_readl(tbase, TUSB_INT_MASK); 828 musb_writel(tbase, TUSB_INT_MASK, ~TUSB_INT_MASK_RESERVED_BITS); 829 830 int_src = musb_readl(tbase, TUSB_INT_SRC) & ~TUSB_INT_SRC_RESERVED_BITS; 831 dev_dbg(musb->controller, "TUSB IRQ %08x\n", int_src); 832 833 musb->int_usb = (u8) int_src; 834 835 /* Acknowledge wake-up source interrupts */ 836 if (int_src & TUSB_INT_SRC_DEV_WAKEUP) { 837 u32 reg; 838 u32 i; 839 840 if (musb->tusb_revision == TUSB_REV_30) 841 tusb_wbus_quirk(musb, 0); 842 843 /* there are issues re-locking the PLL on wakeup ... */ 844 845 /* work around issue 8 */ 846 for (i = 0xf7f7f7; i > 0xf7f7f7 - 1000; i--) { 847 musb_writel(tbase, TUSB_SCRATCH_PAD, 0); 848 musb_writel(tbase, TUSB_SCRATCH_PAD, i); 849 reg = musb_readl(tbase, TUSB_SCRATCH_PAD); 850 if (reg == i) 851 break; 852 dev_dbg(musb->controller, "TUSB NOR not ready\n"); 853 } 854 855 /* work around issue 13 (2nd half) */ 856 tusb_set_clock_source(musb, 1); 857 858 reg = musb_readl(tbase, TUSB_PRCM_WAKEUP_SOURCE); 859 musb_writel(tbase, TUSB_PRCM_WAKEUP_CLEAR, reg); 860 if (reg & ~TUSB_PRCM_WNORCS) { 861 musb->is_active = 1; 862 schedule_delayed_work(&musb->irq_work, 0); 863 } 864 dev_dbg(musb->controller, "wake %sactive %02x\n", 865 musb->is_active ? "" : "in", reg); 866 867 /* REVISIT host side TUSB_PRCM_WHOSTDISCON, TUSB_PRCM_WBUS */ 868 } 869 870 if (int_src & TUSB_INT_SRC_USB_IP_CONN) 871 del_timer(&musb->dev_timer); 872 873 /* OTG state change reports (annoyingly) not issued by Mentor core */ 874 if (int_src & (TUSB_INT_SRC_VBUS_SENSE_CHNG 875 | TUSB_INT_SRC_OTG_TIMEOUT 876 | TUSB_INT_SRC_ID_STATUS_CHNG)) 877 idle_timeout = tusb_otg_ints(musb, int_src, tbase); 878 879 /* 880 * Just clear the DMA interrupt if it comes as the completion for both 881 * TX and RX is handled by the DMA callback in tusb6010_omap 882 */ 883 if ((int_src & TUSB_INT_SRC_TXRX_DMA_DONE)) { 884 u32 dma_src = musb_readl(tbase, TUSB_DMA_INT_SRC); 885 886 dev_dbg(musb->controller, "DMA IRQ %08x\n", dma_src); 887 musb_writel(tbase, TUSB_DMA_INT_CLEAR, dma_src); 888 } 889 890 /* EP interrupts. In OCP mode tusb6010 mirrors the MUSB interrupts */ 891 if (int_src & (TUSB_INT_SRC_USB_IP_TX | TUSB_INT_SRC_USB_IP_RX)) { 892 u32 musb_src = musb_readl(tbase, TUSB_USBIP_INT_SRC); 893 894 musb_writel(tbase, TUSB_USBIP_INT_CLEAR, musb_src); 895 musb->int_rx = (((musb_src >> 16) & 0xffff) << 1); 896 musb->int_tx = (musb_src & 0xffff); 897 } else { 898 musb->int_rx = 0; 899 musb->int_tx = 0; 900 } 901 902 if (int_src & (TUSB_INT_SRC_USB_IP_TX | TUSB_INT_SRC_USB_IP_RX | 0xff)) 903 musb_interrupt(musb); 904 905 /* Acknowledge TUSB interrupts. Clear only non-reserved bits */ 906 musb_writel(tbase, TUSB_INT_SRC_CLEAR, 907 int_src & ~TUSB_INT_MASK_RESERVED_BITS); 908 909 tusb_musb_try_idle(musb, idle_timeout); 910 911 musb_writel(tbase, TUSB_INT_MASK, int_mask); 912 spin_unlock_irqrestore(&musb->lock, flags); 913 914 return IRQ_HANDLED; 915 } 916 917 static int dma_off; 918 919 /* 920 * Enables TUSB6010. Caller must take care of locking. 921 * REVISIT: 922 * - Check what is unnecessary in MGC_HdrcStart() 923 */ 924 static void tusb_musb_enable(struct musb *musb) 925 { 926 void __iomem *tbase = musb->ctrl_base; 927 928 /* Setup TUSB6010 main interrupt mask. Enable all interrupts except SOF. 929 * REVISIT: Enable and deal with TUSB_INT_SRC_USB_IP_SOF */ 930 musb_writel(tbase, TUSB_INT_MASK, TUSB_INT_SRC_USB_IP_SOF); 931 932 /* Setup TUSB interrupt, disable DMA and GPIO interrupts */ 933 musb_writel(tbase, TUSB_USBIP_INT_MASK, 0); 934 musb_writel(tbase, TUSB_DMA_INT_MASK, 0x7fffffff); 935 musb_writel(tbase, TUSB_GPIO_INT_MASK, 0x1ff); 936 937 /* Clear all subsystem interrups */ 938 musb_writel(tbase, TUSB_USBIP_INT_CLEAR, 0x7fffffff); 939 musb_writel(tbase, TUSB_DMA_INT_CLEAR, 0x7fffffff); 940 musb_writel(tbase, TUSB_GPIO_INT_CLEAR, 0x1ff); 941 942 /* Acknowledge pending interrupt(s) */ 943 musb_writel(tbase, TUSB_INT_SRC_CLEAR, ~TUSB_INT_MASK_RESERVED_BITS); 944 945 /* Only 0 clock cycles for minimum interrupt de-assertion time and 946 * interrupt polarity active low seems to work reliably here */ 947 musb_writel(tbase, TUSB_INT_CTRL_CONF, 948 TUSB_INT_CTRL_CONF_INT_RELCYC(0)); 949 950 irq_set_irq_type(musb->nIrq, IRQ_TYPE_LEVEL_LOW); 951 952 /* maybe force into the Default-A OTG state machine */ 953 if (!(musb_readl(tbase, TUSB_DEV_OTG_STAT) 954 & TUSB_DEV_OTG_STAT_ID_STATUS)) 955 musb_writel(tbase, TUSB_INT_SRC_SET, 956 TUSB_INT_SRC_ID_STATUS_CHNG); 957 958 if (is_dma_capable() && dma_off) 959 printk(KERN_WARNING "%s %s: dma not reactivated\n", 960 __FILE__, __func__); 961 else 962 dma_off = 1; 963 } 964 965 /* 966 * Disables TUSB6010. Caller must take care of locking. 967 */ 968 static void tusb_musb_disable(struct musb *musb) 969 { 970 void __iomem *tbase = musb->ctrl_base; 971 972 /* FIXME stop DMA, IRQs, timers, ... */ 973 974 /* disable all IRQs */ 975 musb_writel(tbase, TUSB_INT_MASK, ~TUSB_INT_MASK_RESERVED_BITS); 976 musb_writel(tbase, TUSB_USBIP_INT_MASK, 0x7fffffff); 977 musb_writel(tbase, TUSB_DMA_INT_MASK, 0x7fffffff); 978 musb_writel(tbase, TUSB_GPIO_INT_MASK, 0x1ff); 979 980 del_timer(&musb->dev_timer); 981 982 if (is_dma_capable() && !dma_off) { 983 printk(KERN_WARNING "%s %s: dma still active\n", 984 __FILE__, __func__); 985 dma_off = 1; 986 } 987 } 988 989 /* 990 * Sets up TUSB6010 CPU interface specific signals and registers 991 * Note: Settings optimized for OMAP24xx 992 */ 993 static void tusb_setup_cpu_interface(struct musb *musb) 994 { 995 void __iomem *tbase = musb->ctrl_base; 996 997 /* 998 * Disable GPIO[5:0] pullups (used as output DMA requests) 999 * Don't disable GPIO[7:6] as they are needed for wake-up. 1000 */ 1001 musb_writel(tbase, TUSB_PULLUP_1_CTRL, 0x0000003F); 1002 1003 /* Disable all pullups on NOR IF, DMAREQ0 and DMAREQ1 */ 1004 musb_writel(tbase, TUSB_PULLUP_2_CTRL, 0x01FFFFFF); 1005 1006 /* Turn GPIO[5:0] to DMAREQ[5:0] signals */ 1007 musb_writel(tbase, TUSB_GPIO_CONF, TUSB_GPIO_CONF_DMAREQ(0x3f)); 1008 1009 /* Burst size 16x16 bits, all six DMA requests enabled, DMA request 1010 * de-assertion time 2 system clocks p 62 */ 1011 musb_writel(tbase, TUSB_DMA_REQ_CONF, 1012 TUSB_DMA_REQ_CONF_BURST_SIZE(2) | 1013 TUSB_DMA_REQ_CONF_DMA_REQ_EN(0x3f) | 1014 TUSB_DMA_REQ_CONF_DMA_REQ_ASSER(2)); 1015 1016 /* Set 0 wait count for synchronous burst access */ 1017 musb_writel(tbase, TUSB_WAIT_COUNT, 1); 1018 } 1019 1020 static int tusb_musb_start(struct musb *musb) 1021 { 1022 void __iomem *tbase = musb->ctrl_base; 1023 int ret = 0; 1024 unsigned long flags; 1025 u32 reg; 1026 1027 if (musb->board_set_power) 1028 ret = musb->board_set_power(1); 1029 if (ret != 0) { 1030 printk(KERN_ERR "tusb: Cannot enable TUSB6010\n"); 1031 return ret; 1032 } 1033 1034 spin_lock_irqsave(&musb->lock, flags); 1035 1036 if (musb_readl(tbase, TUSB_PROD_TEST_RESET) != 1037 TUSB_PROD_TEST_RESET_VAL) { 1038 printk(KERN_ERR "tusb: Unable to detect TUSB6010\n"); 1039 goto err; 1040 } 1041 1042 musb->tusb_revision = tusb_get_revision(musb); 1043 tusb_print_revision(musb); 1044 if (musb->tusb_revision < 2) { 1045 printk(KERN_ERR "tusb: Unsupported TUSB6010 revision %i\n", 1046 musb->tusb_revision); 1047 goto err; 1048 } 1049 1050 /* The uint bit for "USB non-PDR interrupt enable" has to be 1 when 1051 * NOR FLASH interface is used */ 1052 musb_writel(tbase, TUSB_VLYNQ_CTRL, 8); 1053 1054 /* Select PHY free running 60MHz as a system clock */ 1055 tusb_set_clock_source(musb, 1); 1056 1057 /* VBus valid timer 1us, disable DFT/Debug and VLYNQ clocks for 1058 * power saving, enable VBus detect and session end comparators, 1059 * enable IDpullup, enable VBus charging */ 1060 musb_writel(tbase, TUSB_PRCM_MNGMT, 1061 TUSB_PRCM_MNGMT_VBUS_VALID_TIMER(0xa) | 1062 TUSB_PRCM_MNGMT_VBUS_VALID_FLT_EN | 1063 TUSB_PRCM_MNGMT_OTG_SESS_END_EN | 1064 TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN | 1065 TUSB_PRCM_MNGMT_OTG_ID_PULLUP); 1066 tusb_setup_cpu_interface(musb); 1067 1068 /* simplify: always sense/pullup ID pins, as if in OTG mode */ 1069 reg = musb_readl(tbase, TUSB_PHY_OTG_CTRL_ENABLE); 1070 reg |= TUSB_PHY_OTG_CTRL_WRPROTECT | TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 1071 musb_writel(tbase, TUSB_PHY_OTG_CTRL_ENABLE, reg); 1072 1073 reg = musb_readl(tbase, TUSB_PHY_OTG_CTRL); 1074 reg |= TUSB_PHY_OTG_CTRL_WRPROTECT | TUSB_PHY_OTG_CTRL_OTG_ID_PULLUP; 1075 musb_writel(tbase, TUSB_PHY_OTG_CTRL, reg); 1076 1077 spin_unlock_irqrestore(&musb->lock, flags); 1078 1079 return 0; 1080 1081 err: 1082 spin_unlock_irqrestore(&musb->lock, flags); 1083 1084 if (musb->board_set_power) 1085 musb->board_set_power(0); 1086 1087 return -ENODEV; 1088 } 1089 1090 static int tusb_musb_init(struct musb *musb) 1091 { 1092 struct platform_device *pdev; 1093 struct resource *mem; 1094 void __iomem *sync = NULL; 1095 int ret; 1096 1097 musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); 1098 if (IS_ERR_OR_NULL(musb->xceiv)) 1099 return -EPROBE_DEFER; 1100 1101 pdev = to_platform_device(musb->controller); 1102 1103 /* dma address for async dma */ 1104 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1105 musb->async = mem->start; 1106 1107 /* dma address for sync dma */ 1108 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 1109 if (!mem) { 1110 pr_debug("no sync dma resource?\n"); 1111 ret = -ENODEV; 1112 goto done; 1113 } 1114 musb->sync = mem->start; 1115 1116 sync = ioremap(mem->start, resource_size(mem)); 1117 if (!sync) { 1118 pr_debug("ioremap for sync failed\n"); 1119 ret = -ENOMEM; 1120 goto done; 1121 } 1122 musb->sync_va = sync; 1123 1124 /* Offsets from base: VLYNQ at 0x000, MUSB regs at 0x400, 1125 * FIFOs at 0x600, TUSB at 0x800 1126 */ 1127 musb->mregs += TUSB_BASE_OFFSET; 1128 1129 ret = tusb_musb_start(musb); 1130 if (ret) { 1131 printk(KERN_ERR "Could not start tusb6010 (%d)\n", 1132 ret); 1133 goto done; 1134 } 1135 musb->isr = tusb_musb_interrupt; 1136 1137 musb->xceiv->set_power = tusb_draw_power; 1138 the_musb = musb; 1139 1140 timer_setup(&musb->dev_timer, musb_do_idle, 0); 1141 1142 done: 1143 if (ret < 0) { 1144 if (sync) 1145 iounmap(sync); 1146 1147 usb_put_phy(musb->xceiv); 1148 } 1149 return ret; 1150 } 1151 1152 static int tusb_musb_exit(struct musb *musb) 1153 { 1154 del_timer_sync(&musb->dev_timer); 1155 the_musb = NULL; 1156 1157 if (musb->board_set_power) 1158 musb->board_set_power(0); 1159 1160 iounmap(musb->sync_va); 1161 1162 usb_put_phy(musb->xceiv); 1163 return 0; 1164 } 1165 1166 static const struct musb_platform_ops tusb_ops = { 1167 .quirks = MUSB_DMA_TUSB_OMAP | MUSB_IN_TUSB | 1168 MUSB_G_NO_SKB_RESERVE, 1169 .init = tusb_musb_init, 1170 .exit = tusb_musb_exit, 1171 1172 .ep_offset = tusb_ep_offset, 1173 .ep_select = tusb_ep_select, 1174 .fifo_offset = tusb_fifo_offset, 1175 .readb = tusb_readb, 1176 .writeb = tusb_writeb, 1177 .read_fifo = tusb_read_fifo, 1178 .write_fifo = tusb_write_fifo, 1179 #ifdef CONFIG_USB_TUSB_OMAP_DMA 1180 .dma_init = tusb_dma_controller_create, 1181 .dma_exit = tusb_dma_controller_destroy, 1182 #endif 1183 .enable = tusb_musb_enable, 1184 .disable = tusb_musb_disable, 1185 1186 .set_mode = tusb_musb_set_mode, 1187 .try_idle = tusb_musb_try_idle, 1188 1189 .vbus_status = tusb_musb_vbus_status, 1190 .set_vbus = tusb_musb_set_vbus, 1191 }; 1192 1193 static const struct platform_device_info tusb_dev_info = { 1194 .name = "musb-hdrc", 1195 .id = PLATFORM_DEVID_AUTO, 1196 .dma_mask = DMA_BIT_MASK(32), 1197 }; 1198 1199 static int tusb_probe(struct platform_device *pdev) 1200 { 1201 struct resource musb_resources[3]; 1202 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); 1203 struct platform_device *musb; 1204 struct tusb6010_glue *glue; 1205 struct platform_device_info pinfo; 1206 int ret; 1207 1208 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); 1209 if (!glue) 1210 return -ENOMEM; 1211 1212 glue->dev = &pdev->dev; 1213 1214 pdata->platform_ops = &tusb_ops; 1215 1216 usb_phy_generic_register(); 1217 platform_set_drvdata(pdev, glue); 1218 1219 memset(musb_resources, 0x00, sizeof(*musb_resources) * 1220 ARRAY_SIZE(musb_resources)); 1221 1222 musb_resources[0].name = pdev->resource[0].name; 1223 musb_resources[0].start = pdev->resource[0].start; 1224 musb_resources[0].end = pdev->resource[0].end; 1225 musb_resources[0].flags = pdev->resource[0].flags; 1226 1227 musb_resources[1].name = pdev->resource[1].name; 1228 musb_resources[1].start = pdev->resource[1].start; 1229 musb_resources[1].end = pdev->resource[1].end; 1230 musb_resources[1].flags = pdev->resource[1].flags; 1231 1232 musb_resources[2].name = pdev->resource[2].name; 1233 musb_resources[2].start = pdev->resource[2].start; 1234 musb_resources[2].end = pdev->resource[2].end; 1235 musb_resources[2].flags = pdev->resource[2].flags; 1236 1237 pinfo = tusb_dev_info; 1238 pinfo.parent = &pdev->dev; 1239 pinfo.res = musb_resources; 1240 pinfo.num_res = ARRAY_SIZE(musb_resources); 1241 pinfo.data = pdata; 1242 pinfo.size_data = sizeof(*pdata); 1243 1244 glue->musb = musb = platform_device_register_full(&pinfo); 1245 if (IS_ERR(musb)) { 1246 ret = PTR_ERR(musb); 1247 dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); 1248 return ret; 1249 } 1250 1251 return 0; 1252 } 1253 1254 static int tusb_remove(struct platform_device *pdev) 1255 { 1256 struct tusb6010_glue *glue = platform_get_drvdata(pdev); 1257 1258 platform_device_unregister(glue->musb); 1259 usb_phy_generic_unregister(glue->phy); 1260 1261 return 0; 1262 } 1263 1264 static struct platform_driver tusb_driver = { 1265 .probe = tusb_probe, 1266 .remove = tusb_remove, 1267 .driver = { 1268 .name = "musb-tusb", 1269 }, 1270 }; 1271 1272 MODULE_DESCRIPTION("TUSB6010 MUSB Glue Layer"); 1273 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 1274 MODULE_LICENSE("GPL v2"); 1275 module_platform_driver(tusb_driver); 1276