1 /* 2 * Copyright (C) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org> 3 * Copyright (C) 2014 Marek Vasut <marex@denx.de> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <errno.h> 11 #include <usb.h> 12 #include <malloc.h> 13 #include <memalign.h> 14 #include <phys2bus.h> 15 #include <usbroothubdes.h> 16 #include <wait_bit.h> 17 #include <asm/io.h> 18 #include <power/regulator.h> 19 20 #include "dwc2.h" 21 22 DECLARE_GLOBAL_DATA_PTR; 23 24 /* Use only HC channel 0. */ 25 #define DWC2_HC_CHANNEL 0 26 27 #define DWC2_STATUS_BUF_SIZE 64 28 #define DWC2_DATA_BUF_SIZE (64 * 1024) 29 30 #define MAX_DEVICE 16 31 #define MAX_ENDPOINT 16 32 33 struct dwc2_priv { 34 #ifdef CONFIG_DM_USB 35 uint8_t aligned_buffer[DWC2_DATA_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN); 36 uint8_t status_buffer[DWC2_STATUS_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN); 37 #else 38 uint8_t *aligned_buffer; 39 uint8_t *status_buffer; 40 #endif 41 u8 in_data_toggle[MAX_DEVICE][MAX_ENDPOINT]; 42 u8 out_data_toggle[MAX_DEVICE][MAX_ENDPOINT]; 43 struct dwc2_core_regs *regs; 44 int root_hub_devnum; 45 bool ext_vbus; 46 bool oc_disable; 47 }; 48 49 #ifndef CONFIG_DM_USB 50 /* We need cacheline-aligned buffers for DMA transfers and dcache support */ 51 DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer_addr, DWC2_DATA_BUF_SIZE, 52 ARCH_DMA_MINALIGN); 53 DEFINE_ALIGN_BUFFER(uint8_t, status_buffer_addr, DWC2_STATUS_BUF_SIZE, 54 ARCH_DMA_MINALIGN); 55 56 static struct dwc2_priv local; 57 #endif 58 59 /* 60 * DWC2 IP interface 61 */ 62 63 /* 64 * Initializes the FSLSPClkSel field of the HCFG register 65 * depending on the PHY type. 66 */ 67 static void init_fslspclksel(struct dwc2_core_regs *regs) 68 { 69 uint32_t phyclk; 70 71 #if (CONFIG_DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS) 72 phyclk = DWC2_HCFG_FSLSPCLKSEL_48_MHZ; /* Full speed PHY */ 73 #else 74 /* High speed PHY running at full speed or high speed */ 75 phyclk = DWC2_HCFG_FSLSPCLKSEL_30_60_MHZ; 76 #endif 77 78 #ifdef CONFIG_DWC2_ULPI_FS_LS 79 uint32_t hwcfg2 = readl(®s->ghwcfg2); 80 uint32_t hval = (ghwcfg2 & DWC2_HWCFG2_HS_PHY_TYPE_MASK) >> 81 DWC2_HWCFG2_HS_PHY_TYPE_OFFSET; 82 uint32_t fval = (ghwcfg2 & DWC2_HWCFG2_FS_PHY_TYPE_MASK) >> 83 DWC2_HWCFG2_FS_PHY_TYPE_OFFSET; 84 85 if (hval == 2 && fval == 1) 86 phyclk = DWC2_HCFG_FSLSPCLKSEL_48_MHZ; /* Full speed PHY */ 87 #endif 88 89 clrsetbits_le32(®s->host_regs.hcfg, 90 DWC2_HCFG_FSLSPCLKSEL_MASK, 91 phyclk << DWC2_HCFG_FSLSPCLKSEL_OFFSET); 92 } 93 94 /* 95 * Flush a Tx FIFO. 96 * 97 * @param regs Programming view of DWC_otg controller. 98 * @param num Tx FIFO to flush. 99 */ 100 static void dwc_otg_flush_tx_fifo(struct dwc2_core_regs *regs, const int num) 101 { 102 int ret; 103 104 writel(DWC2_GRSTCTL_TXFFLSH | (num << DWC2_GRSTCTL_TXFNUM_OFFSET), 105 ®s->grstctl); 106 ret = wait_for_bit(__func__, ®s->grstctl, DWC2_GRSTCTL_TXFFLSH, 107 false, 1000, false); 108 if (ret) 109 printf("%s: Timeout!\n", __func__); 110 111 /* Wait for 3 PHY Clocks */ 112 udelay(1); 113 } 114 115 /* 116 * Flush Rx FIFO. 117 * 118 * @param regs Programming view of DWC_otg controller. 119 */ 120 static void dwc_otg_flush_rx_fifo(struct dwc2_core_regs *regs) 121 { 122 int ret; 123 124 writel(DWC2_GRSTCTL_RXFFLSH, ®s->grstctl); 125 ret = wait_for_bit(__func__, ®s->grstctl, DWC2_GRSTCTL_RXFFLSH, 126 false, 1000, false); 127 if (ret) 128 printf("%s: Timeout!\n", __func__); 129 130 /* Wait for 3 PHY Clocks */ 131 udelay(1); 132 } 133 134 /* 135 * Do core a soft reset of the core. Be careful with this because it 136 * resets all the internal state machines of the core. 137 */ 138 static void dwc_otg_core_reset(struct dwc2_core_regs *regs) 139 { 140 int ret; 141 142 /* Wait for AHB master IDLE state. */ 143 ret = wait_for_bit(__func__, ®s->grstctl, DWC2_GRSTCTL_AHBIDLE, 144 true, 1000, false); 145 if (ret) 146 printf("%s: Timeout!\n", __func__); 147 148 /* Core Soft Reset */ 149 writel(DWC2_GRSTCTL_CSFTRST, ®s->grstctl); 150 ret = wait_for_bit(__func__, ®s->grstctl, DWC2_GRSTCTL_CSFTRST, 151 false, 1000, false); 152 if (ret) 153 printf("%s: Timeout!\n", __func__); 154 155 /* 156 * Wait for core to come out of reset. 157 * NOTE: This long sleep is _very_ important, otherwise the core will 158 * not stay in host mode after a connector ID change! 159 */ 160 mdelay(100); 161 } 162 163 #if defined(CONFIG_DM_USB) && defined(CONFIG_DM_REGULATOR) 164 static int dwc_vbus_supply_init(struct udevice *dev) 165 { 166 struct udevice *vbus_supply; 167 int ret; 168 169 ret = device_get_supply_regulator(dev, "vbus-supply", &vbus_supply); 170 if (ret) { 171 debug("%s: No vbus supply\n", dev->name); 172 return 0; 173 } 174 175 ret = regulator_set_enable(vbus_supply, true); 176 if (ret) { 177 error("Error enabling vbus supply\n"); 178 return ret; 179 } 180 181 return 0; 182 } 183 #else 184 static int dwc_vbus_supply_init(struct udevice *dev) 185 { 186 return 0; 187 } 188 #endif 189 190 /* 191 * This function initializes the DWC_otg controller registers for 192 * host mode. 193 * 194 * This function flushes the Tx and Rx FIFOs and it flushes any entries in the 195 * request queues. Host channels are reset to ensure that they are ready for 196 * performing transfers. 197 * 198 * @param dev USB Device (NULL if driver model is not being used) 199 * @param regs Programming view of DWC_otg controller 200 * 201 */ 202 static void dwc_otg_core_host_init(struct udevice *dev, 203 struct dwc2_core_regs *regs) 204 { 205 uint32_t nptxfifosize = 0; 206 uint32_t ptxfifosize = 0; 207 uint32_t hprt0 = 0; 208 int i, ret, num_channels; 209 210 /* Restart the Phy Clock */ 211 writel(0, ®s->pcgcctl); 212 213 /* Initialize Host Configuration Register */ 214 init_fslspclksel(regs); 215 #ifdef CONFIG_DWC2_DFLT_SPEED_FULL 216 setbits_le32(®s->host_regs.hcfg, DWC2_HCFG_FSLSSUPP); 217 #endif 218 219 /* Configure data FIFO sizes */ 220 #ifdef CONFIG_DWC2_ENABLE_DYNAMIC_FIFO 221 if (readl(®s->ghwcfg2) & DWC2_HWCFG2_DYNAMIC_FIFO) { 222 /* Rx FIFO */ 223 writel(CONFIG_DWC2_HOST_RX_FIFO_SIZE, ®s->grxfsiz); 224 225 /* Non-periodic Tx FIFO */ 226 nptxfifosize |= CONFIG_DWC2_HOST_NPERIO_TX_FIFO_SIZE << 227 DWC2_FIFOSIZE_DEPTH_OFFSET; 228 nptxfifosize |= CONFIG_DWC2_HOST_RX_FIFO_SIZE << 229 DWC2_FIFOSIZE_STARTADDR_OFFSET; 230 writel(nptxfifosize, ®s->gnptxfsiz); 231 232 /* Periodic Tx FIFO */ 233 ptxfifosize |= CONFIG_DWC2_HOST_PERIO_TX_FIFO_SIZE << 234 DWC2_FIFOSIZE_DEPTH_OFFSET; 235 ptxfifosize |= (CONFIG_DWC2_HOST_RX_FIFO_SIZE + 236 CONFIG_DWC2_HOST_NPERIO_TX_FIFO_SIZE) << 237 DWC2_FIFOSIZE_STARTADDR_OFFSET; 238 writel(ptxfifosize, ®s->hptxfsiz); 239 } 240 #endif 241 242 /* Clear Host Set HNP Enable in the OTG Control Register */ 243 clrbits_le32(®s->gotgctl, DWC2_GOTGCTL_HSTSETHNPEN); 244 245 /* Make sure the FIFOs are flushed. */ 246 dwc_otg_flush_tx_fifo(regs, 0x10); /* All Tx FIFOs */ 247 dwc_otg_flush_rx_fifo(regs); 248 249 /* Flush out any leftover queued requests. */ 250 num_channels = readl(®s->ghwcfg2); 251 num_channels &= DWC2_HWCFG2_NUM_HOST_CHAN_MASK; 252 num_channels >>= DWC2_HWCFG2_NUM_HOST_CHAN_OFFSET; 253 num_channels += 1; 254 255 for (i = 0; i < num_channels; i++) 256 clrsetbits_le32(®s->hc_regs[i].hcchar, 257 DWC2_HCCHAR_CHEN | DWC2_HCCHAR_EPDIR, 258 DWC2_HCCHAR_CHDIS); 259 260 /* Halt all channels to put them into a known state. */ 261 for (i = 0; i < num_channels; i++) { 262 clrsetbits_le32(®s->hc_regs[i].hcchar, 263 DWC2_HCCHAR_EPDIR, 264 DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS); 265 ret = wait_for_bit(__func__, ®s->hc_regs[i].hcchar, 266 DWC2_HCCHAR_CHEN, false, 1000, false); 267 if (ret) 268 printf("%s: Timeout!\n", __func__); 269 } 270 271 /* Turn on the vbus power. */ 272 if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST) { 273 hprt0 = readl(®s->hprt0); 274 hprt0 &= ~(DWC2_HPRT0_PRTENA | DWC2_HPRT0_PRTCONNDET); 275 hprt0 &= ~(DWC2_HPRT0_PRTENCHNG | DWC2_HPRT0_PRTOVRCURRCHNG); 276 if (!(hprt0 & DWC2_HPRT0_PRTPWR)) { 277 hprt0 |= DWC2_HPRT0_PRTPWR; 278 writel(hprt0, ®s->hprt0); 279 } 280 } 281 282 if (dev) 283 dwc_vbus_supply_init(dev); 284 } 285 286 /* 287 * This function initializes the DWC_otg controller registers and 288 * prepares the core for device mode or host mode operation. 289 * 290 * @param regs Programming view of the DWC_otg controller 291 */ 292 static void dwc_otg_core_init(struct dwc2_priv *priv) 293 { 294 struct dwc2_core_regs *regs = priv->regs; 295 uint32_t ahbcfg = 0; 296 uint32_t usbcfg = 0; 297 uint8_t brst_sz = CONFIG_DWC2_DMA_BURST_SIZE; 298 299 /* Common Initialization */ 300 usbcfg = readl(®s->gusbcfg); 301 302 /* Program the ULPI External VBUS bit if needed */ 303 if (priv->ext_vbus) { 304 usbcfg |= DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV; 305 if (!priv->oc_disable) { 306 usbcfg |= DWC2_GUSBCFG_ULPI_INT_VBUS_INDICATOR | 307 DWC2_GUSBCFG_INDICATOR_PASSTHROUGH; 308 } 309 } else { 310 usbcfg &= ~DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV; 311 } 312 313 /* Set external TS Dline pulsing */ 314 #ifdef CONFIG_DWC2_TS_DLINE 315 usbcfg |= DWC2_GUSBCFG_TERM_SEL_DL_PULSE; 316 #else 317 usbcfg &= ~DWC2_GUSBCFG_TERM_SEL_DL_PULSE; 318 #endif 319 writel(usbcfg, ®s->gusbcfg); 320 321 /* Reset the Controller */ 322 dwc_otg_core_reset(regs); 323 324 /* 325 * This programming sequence needs to happen in FS mode before 326 * any other programming occurs 327 */ 328 #if defined(CONFIG_DWC2_DFLT_SPEED_FULL) && \ 329 (CONFIG_DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS) 330 /* If FS mode with FS PHY */ 331 setbits_le32(®s->gusbcfg, DWC2_GUSBCFG_PHYSEL); 332 333 /* Reset after a PHY select */ 334 dwc_otg_core_reset(regs); 335 336 /* 337 * Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS. 338 * Also do this on HNP Dev/Host mode switches (done in dev_init 339 * and host_init). 340 */ 341 if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST) 342 init_fslspclksel(regs); 343 344 #ifdef CONFIG_DWC2_I2C_ENABLE 345 /* Program GUSBCFG.OtgUtmifsSel to I2C */ 346 setbits_le32(®s->gusbcfg, DWC2_GUSBCFG_OTGUTMIFSSEL); 347 348 /* Program GI2CCTL.I2CEn */ 349 clrsetbits_le32(®s->gi2cctl, DWC2_GI2CCTL_I2CEN | 350 DWC2_GI2CCTL_I2CDEVADDR_MASK, 351 1 << DWC2_GI2CCTL_I2CDEVADDR_OFFSET); 352 setbits_le32(®s->gi2cctl, DWC2_GI2CCTL_I2CEN); 353 #endif 354 355 #else 356 /* High speed PHY. */ 357 358 /* 359 * HS PHY parameters. These parameters are preserved during 360 * soft reset so only program the first time. Do a soft reset 361 * immediately after setting phyif. 362 */ 363 usbcfg &= ~(DWC2_GUSBCFG_ULPI_UTMI_SEL | DWC2_GUSBCFG_PHYIF); 364 usbcfg |= CONFIG_DWC2_PHY_TYPE << DWC2_GUSBCFG_ULPI_UTMI_SEL_OFFSET; 365 366 if (usbcfg & DWC2_GUSBCFG_ULPI_UTMI_SEL) { /* ULPI interface */ 367 #ifdef CONFIG_DWC2_PHY_ULPI_DDR 368 usbcfg |= DWC2_GUSBCFG_DDRSEL; 369 #else 370 usbcfg &= ~DWC2_GUSBCFG_DDRSEL; 371 #endif 372 } else { /* UTMI+ interface */ 373 #if (CONFIG_DWC2_UTMI_PHY_WIDTH == 16) 374 usbcfg |= DWC2_GUSBCFG_PHYIF; 375 #endif 376 } 377 378 writel(usbcfg, ®s->gusbcfg); 379 380 /* Reset after setting the PHY parameters */ 381 dwc_otg_core_reset(regs); 382 #endif 383 384 usbcfg = readl(®s->gusbcfg); 385 usbcfg &= ~(DWC2_GUSBCFG_ULPI_FSLS | DWC2_GUSBCFG_ULPI_CLK_SUS_M); 386 #ifdef CONFIG_DWC2_ULPI_FS_LS 387 uint32_t hwcfg2 = readl(®s->ghwcfg2); 388 uint32_t hval = (ghwcfg2 & DWC2_HWCFG2_HS_PHY_TYPE_MASK) >> 389 DWC2_HWCFG2_HS_PHY_TYPE_OFFSET; 390 uint32_t fval = (ghwcfg2 & DWC2_HWCFG2_FS_PHY_TYPE_MASK) >> 391 DWC2_HWCFG2_FS_PHY_TYPE_OFFSET; 392 if (hval == 2 && fval == 1) { 393 usbcfg |= DWC2_GUSBCFG_ULPI_FSLS; 394 usbcfg |= DWC2_GUSBCFG_ULPI_CLK_SUS_M; 395 } 396 #endif 397 writel(usbcfg, ®s->gusbcfg); 398 399 /* Program the GAHBCFG Register. */ 400 switch (readl(®s->ghwcfg2) & DWC2_HWCFG2_ARCHITECTURE_MASK) { 401 case DWC2_HWCFG2_ARCHITECTURE_SLAVE_ONLY: 402 break; 403 case DWC2_HWCFG2_ARCHITECTURE_EXT_DMA: 404 while (brst_sz > 1) { 405 ahbcfg |= ahbcfg + (1 << DWC2_GAHBCFG_HBURSTLEN_OFFSET); 406 ahbcfg &= DWC2_GAHBCFG_HBURSTLEN_MASK; 407 brst_sz >>= 1; 408 } 409 410 #ifdef CONFIG_DWC2_DMA_ENABLE 411 ahbcfg |= DWC2_GAHBCFG_DMAENABLE; 412 #endif 413 break; 414 415 case DWC2_HWCFG2_ARCHITECTURE_INT_DMA: 416 ahbcfg |= DWC2_GAHBCFG_HBURSTLEN_INCR4; 417 #ifdef CONFIG_DWC2_DMA_ENABLE 418 ahbcfg |= DWC2_GAHBCFG_DMAENABLE; 419 #endif 420 break; 421 } 422 423 writel(ahbcfg, ®s->gahbcfg); 424 425 /* Program the GUSBCFG register for HNP/SRP. */ 426 setbits_le32(®s->gusbcfg, DWC2_GUSBCFG_HNPCAP | DWC2_GUSBCFG_SRPCAP); 427 428 #ifdef CONFIG_DWC2_IC_USB_CAP 429 setbits_le32(®s->gusbcfg, DWC2_GUSBCFG_IC_USB_CAP); 430 #endif 431 } 432 433 /* 434 * Prepares a host channel for transferring packets to/from a specific 435 * endpoint. The HCCHARn register is set up with the characteristics specified 436 * in _hc. Host channel interrupts that may need to be serviced while this 437 * transfer is in progress are enabled. 438 * 439 * @param regs Programming view of DWC_otg controller 440 * @param hc Information needed to initialize the host channel 441 */ 442 static void dwc_otg_hc_init(struct dwc2_core_regs *regs, uint8_t hc_num, 443 struct usb_device *dev, uint8_t dev_addr, uint8_t ep_num, 444 uint8_t ep_is_in, uint8_t ep_type, uint16_t max_packet) 445 { 446 struct dwc2_hc_regs *hc_regs = ®s->hc_regs[hc_num]; 447 uint32_t hcchar = (dev_addr << DWC2_HCCHAR_DEVADDR_OFFSET) | 448 (ep_num << DWC2_HCCHAR_EPNUM_OFFSET) | 449 (ep_is_in << DWC2_HCCHAR_EPDIR_OFFSET) | 450 (ep_type << DWC2_HCCHAR_EPTYPE_OFFSET) | 451 (max_packet << DWC2_HCCHAR_MPS_OFFSET); 452 453 if (dev->speed == USB_SPEED_LOW) 454 hcchar |= DWC2_HCCHAR_LSPDDEV; 455 456 /* 457 * Program the HCCHARn register with the endpoint characteristics 458 * for the current transfer. 459 */ 460 writel(hcchar, &hc_regs->hcchar); 461 462 /* Program the HCSPLIT register, default to no SPLIT */ 463 writel(0, &hc_regs->hcsplt); 464 } 465 466 static void dwc_otg_hc_init_split(struct dwc2_hc_regs *hc_regs, 467 uint8_t hub_devnum, uint8_t hub_port) 468 { 469 uint32_t hcsplt = 0; 470 471 hcsplt = DWC2_HCSPLT_SPLTENA; 472 hcsplt |= hub_devnum << DWC2_HCSPLT_HUBADDR_OFFSET; 473 hcsplt |= hub_port << DWC2_HCSPLT_PRTADDR_OFFSET; 474 475 /* Program the HCSPLIT register for SPLITs */ 476 writel(hcsplt, &hc_regs->hcsplt); 477 } 478 479 /* 480 * DWC2 to USB API interface 481 */ 482 /* Direction: In ; Request: Status */ 483 static int dwc_otg_submit_rh_msg_in_status(struct dwc2_core_regs *regs, 484 struct usb_device *dev, void *buffer, 485 int txlen, struct devrequest *cmd) 486 { 487 uint32_t hprt0 = 0; 488 uint32_t port_status = 0; 489 uint32_t port_change = 0; 490 int len = 0; 491 int stat = 0; 492 493 switch (cmd->requesttype & ~USB_DIR_IN) { 494 case 0: 495 *(uint16_t *)buffer = cpu_to_le16(1); 496 len = 2; 497 break; 498 case USB_RECIP_INTERFACE: 499 case USB_RECIP_ENDPOINT: 500 *(uint16_t *)buffer = cpu_to_le16(0); 501 len = 2; 502 break; 503 case USB_TYPE_CLASS: 504 *(uint32_t *)buffer = cpu_to_le32(0); 505 len = 4; 506 break; 507 case USB_RECIP_OTHER | USB_TYPE_CLASS: 508 hprt0 = readl(®s->hprt0); 509 if (hprt0 & DWC2_HPRT0_PRTCONNSTS) 510 port_status |= USB_PORT_STAT_CONNECTION; 511 if (hprt0 & DWC2_HPRT0_PRTENA) 512 port_status |= USB_PORT_STAT_ENABLE; 513 if (hprt0 & DWC2_HPRT0_PRTSUSP) 514 port_status |= USB_PORT_STAT_SUSPEND; 515 if (hprt0 & DWC2_HPRT0_PRTOVRCURRACT) 516 port_status |= USB_PORT_STAT_OVERCURRENT; 517 if (hprt0 & DWC2_HPRT0_PRTRST) 518 port_status |= USB_PORT_STAT_RESET; 519 if (hprt0 & DWC2_HPRT0_PRTPWR) 520 port_status |= USB_PORT_STAT_POWER; 521 522 if ((hprt0 & DWC2_HPRT0_PRTSPD_MASK) == DWC2_HPRT0_PRTSPD_LOW) 523 port_status |= USB_PORT_STAT_LOW_SPEED; 524 else if ((hprt0 & DWC2_HPRT0_PRTSPD_MASK) == 525 DWC2_HPRT0_PRTSPD_HIGH) 526 port_status |= USB_PORT_STAT_HIGH_SPEED; 527 528 if (hprt0 & DWC2_HPRT0_PRTENCHNG) 529 port_change |= USB_PORT_STAT_C_ENABLE; 530 if (hprt0 & DWC2_HPRT0_PRTCONNDET) 531 port_change |= USB_PORT_STAT_C_CONNECTION; 532 if (hprt0 & DWC2_HPRT0_PRTOVRCURRCHNG) 533 port_change |= USB_PORT_STAT_C_OVERCURRENT; 534 535 *(uint32_t *)buffer = cpu_to_le32(port_status | 536 (port_change << 16)); 537 len = 4; 538 break; 539 default: 540 puts("unsupported root hub command\n"); 541 stat = USB_ST_STALLED; 542 } 543 544 dev->act_len = min(len, txlen); 545 dev->status = stat; 546 547 return stat; 548 } 549 550 /* Direction: In ; Request: Descriptor */ 551 static int dwc_otg_submit_rh_msg_in_descriptor(struct usb_device *dev, 552 void *buffer, int txlen, 553 struct devrequest *cmd) 554 { 555 unsigned char data[32]; 556 uint32_t dsc; 557 int len = 0; 558 int stat = 0; 559 uint16_t wValue = cpu_to_le16(cmd->value); 560 uint16_t wLength = cpu_to_le16(cmd->length); 561 562 switch (cmd->requesttype & ~USB_DIR_IN) { 563 case 0: 564 switch (wValue & 0xff00) { 565 case 0x0100: /* device descriptor */ 566 len = min3(txlen, (int)sizeof(root_hub_dev_des), (int)wLength); 567 memcpy(buffer, root_hub_dev_des, len); 568 break; 569 case 0x0200: /* configuration descriptor */ 570 len = min3(txlen, (int)sizeof(root_hub_config_des), (int)wLength); 571 memcpy(buffer, root_hub_config_des, len); 572 break; 573 case 0x0300: /* string descriptors */ 574 switch (wValue & 0xff) { 575 case 0x00: 576 len = min3(txlen, (int)sizeof(root_hub_str_index0), 577 (int)wLength); 578 memcpy(buffer, root_hub_str_index0, len); 579 break; 580 case 0x01: 581 len = min3(txlen, (int)sizeof(root_hub_str_index1), 582 (int)wLength); 583 memcpy(buffer, root_hub_str_index1, len); 584 break; 585 } 586 break; 587 default: 588 stat = USB_ST_STALLED; 589 } 590 break; 591 592 case USB_TYPE_CLASS: 593 /* Root port config, set 1 port and nothing else. */ 594 dsc = 0x00000001; 595 596 data[0] = 9; /* min length; */ 597 data[1] = 0x29; 598 data[2] = dsc & RH_A_NDP; 599 data[3] = 0; 600 if (dsc & RH_A_PSM) 601 data[3] |= 0x1; 602 if (dsc & RH_A_NOCP) 603 data[3] |= 0x10; 604 else if (dsc & RH_A_OCPM) 605 data[3] |= 0x8; 606 607 /* corresponds to data[4-7] */ 608 data[5] = (dsc & RH_A_POTPGT) >> 24; 609 data[7] = dsc & RH_B_DR; 610 if (data[2] < 7) { 611 data[8] = 0xff; 612 } else { 613 data[0] += 2; 614 data[8] = (dsc & RH_B_DR) >> 8; 615 data[9] = 0xff; 616 data[10] = data[9]; 617 } 618 619 len = min3(txlen, (int)data[0], (int)wLength); 620 memcpy(buffer, data, len); 621 break; 622 default: 623 puts("unsupported root hub command\n"); 624 stat = USB_ST_STALLED; 625 } 626 627 dev->act_len = min(len, txlen); 628 dev->status = stat; 629 630 return stat; 631 } 632 633 /* Direction: In ; Request: Configuration */ 634 static int dwc_otg_submit_rh_msg_in_configuration(struct usb_device *dev, 635 void *buffer, int txlen, 636 struct devrequest *cmd) 637 { 638 int len = 0; 639 int stat = 0; 640 641 switch (cmd->requesttype & ~USB_DIR_IN) { 642 case 0: 643 *(uint8_t *)buffer = 0x01; 644 len = 1; 645 break; 646 default: 647 puts("unsupported root hub command\n"); 648 stat = USB_ST_STALLED; 649 } 650 651 dev->act_len = min(len, txlen); 652 dev->status = stat; 653 654 return stat; 655 } 656 657 /* Direction: In */ 658 static int dwc_otg_submit_rh_msg_in(struct dwc2_priv *priv, 659 struct usb_device *dev, void *buffer, 660 int txlen, struct devrequest *cmd) 661 { 662 switch (cmd->request) { 663 case USB_REQ_GET_STATUS: 664 return dwc_otg_submit_rh_msg_in_status(priv->regs, dev, buffer, 665 txlen, cmd); 666 case USB_REQ_GET_DESCRIPTOR: 667 return dwc_otg_submit_rh_msg_in_descriptor(dev, buffer, 668 txlen, cmd); 669 case USB_REQ_GET_CONFIGURATION: 670 return dwc_otg_submit_rh_msg_in_configuration(dev, buffer, 671 txlen, cmd); 672 default: 673 puts("unsupported root hub command\n"); 674 return USB_ST_STALLED; 675 } 676 } 677 678 /* Direction: Out */ 679 static int dwc_otg_submit_rh_msg_out(struct dwc2_priv *priv, 680 struct usb_device *dev, 681 void *buffer, int txlen, 682 struct devrequest *cmd) 683 { 684 struct dwc2_core_regs *regs = priv->regs; 685 int len = 0; 686 int stat = 0; 687 uint16_t bmrtype_breq = cmd->requesttype | (cmd->request << 8); 688 uint16_t wValue = cpu_to_le16(cmd->value); 689 690 switch (bmrtype_breq & ~USB_DIR_IN) { 691 case (USB_REQ_CLEAR_FEATURE << 8) | USB_RECIP_ENDPOINT: 692 case (USB_REQ_CLEAR_FEATURE << 8) | USB_TYPE_CLASS: 693 break; 694 695 case (USB_REQ_CLEAR_FEATURE << 8) | USB_RECIP_OTHER | USB_TYPE_CLASS: 696 switch (wValue) { 697 case USB_PORT_FEAT_C_CONNECTION: 698 setbits_le32(®s->hprt0, DWC2_HPRT0_PRTCONNDET); 699 break; 700 } 701 break; 702 703 case (USB_REQ_SET_FEATURE << 8) | USB_RECIP_OTHER | USB_TYPE_CLASS: 704 switch (wValue) { 705 case USB_PORT_FEAT_SUSPEND: 706 break; 707 708 case USB_PORT_FEAT_RESET: 709 clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA | 710 DWC2_HPRT0_PRTCONNDET | 711 DWC2_HPRT0_PRTENCHNG | 712 DWC2_HPRT0_PRTOVRCURRCHNG, 713 DWC2_HPRT0_PRTRST); 714 mdelay(50); 715 clrbits_le32(®s->hprt0, DWC2_HPRT0_PRTRST); 716 break; 717 718 case USB_PORT_FEAT_POWER: 719 clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA | 720 DWC2_HPRT0_PRTCONNDET | 721 DWC2_HPRT0_PRTENCHNG | 722 DWC2_HPRT0_PRTOVRCURRCHNG, 723 DWC2_HPRT0_PRTRST); 724 break; 725 726 case USB_PORT_FEAT_ENABLE: 727 break; 728 } 729 break; 730 case (USB_REQ_SET_ADDRESS << 8): 731 priv->root_hub_devnum = wValue; 732 break; 733 case (USB_REQ_SET_CONFIGURATION << 8): 734 break; 735 default: 736 puts("unsupported root hub command\n"); 737 stat = USB_ST_STALLED; 738 } 739 740 len = min(len, txlen); 741 742 dev->act_len = len; 743 dev->status = stat; 744 745 return stat; 746 } 747 748 static int dwc_otg_submit_rh_msg(struct dwc2_priv *priv, struct usb_device *dev, 749 unsigned long pipe, void *buffer, int txlen, 750 struct devrequest *cmd) 751 { 752 int stat = 0; 753 754 if (usb_pipeint(pipe)) { 755 puts("Root-Hub submit IRQ: NOT implemented\n"); 756 return 0; 757 } 758 759 if (cmd->requesttype & USB_DIR_IN) 760 stat = dwc_otg_submit_rh_msg_in(priv, dev, buffer, txlen, cmd); 761 else 762 stat = dwc_otg_submit_rh_msg_out(priv, dev, buffer, txlen, cmd); 763 764 mdelay(1); 765 766 return stat; 767 } 768 769 int wait_for_chhltd(struct dwc2_hc_regs *hc_regs, uint32_t *sub, u8 *toggle) 770 { 771 int ret; 772 uint32_t hcint, hctsiz; 773 774 ret = wait_for_bit(__func__, &hc_regs->hcint, DWC2_HCINT_CHHLTD, true, 775 1000, false); 776 if (ret) 777 return ret; 778 779 hcint = readl(&hc_regs->hcint); 780 hctsiz = readl(&hc_regs->hctsiz); 781 *sub = (hctsiz & DWC2_HCTSIZ_XFERSIZE_MASK) >> 782 DWC2_HCTSIZ_XFERSIZE_OFFSET; 783 *toggle = (hctsiz & DWC2_HCTSIZ_PID_MASK) >> DWC2_HCTSIZ_PID_OFFSET; 784 785 debug("%s: HCINT=%08x sub=%u toggle=%d\n", __func__, hcint, *sub, 786 *toggle); 787 788 if (hcint & DWC2_HCINT_XFERCOMP) 789 return 0; 790 791 if (hcint & (DWC2_HCINT_NAK | DWC2_HCINT_FRMOVRUN)) 792 return -EAGAIN; 793 794 debug("%s: Error (HCINT=%08x)\n", __func__, hcint); 795 return -EINVAL; 796 } 797 798 static int dwc2_eptype[] = { 799 DWC2_HCCHAR_EPTYPE_ISOC, 800 DWC2_HCCHAR_EPTYPE_INTR, 801 DWC2_HCCHAR_EPTYPE_CONTROL, 802 DWC2_HCCHAR_EPTYPE_BULK, 803 }; 804 805 static int transfer_chunk(struct dwc2_hc_regs *hc_regs, void *aligned_buffer, 806 u8 *pid, int in, void *buffer, int num_packets, 807 int xfer_len, int *actual_len, int odd_frame) 808 { 809 int ret = 0; 810 uint32_t sub; 811 812 debug("%s: chunk: pid %d xfer_len %u pkts %u\n", __func__, 813 *pid, xfer_len, num_packets); 814 815 writel((xfer_len << DWC2_HCTSIZ_XFERSIZE_OFFSET) | 816 (num_packets << DWC2_HCTSIZ_PKTCNT_OFFSET) | 817 (*pid << DWC2_HCTSIZ_PID_OFFSET), 818 &hc_regs->hctsiz); 819 820 if (!in && xfer_len) { 821 memcpy(aligned_buffer, buffer, xfer_len); 822 823 flush_dcache_range((unsigned long)aligned_buffer, 824 (unsigned long)aligned_buffer + 825 roundup(xfer_len, ARCH_DMA_MINALIGN)); 826 } 827 828 writel(phys_to_bus((unsigned long)aligned_buffer), &hc_regs->hcdma); 829 830 /* Clear old interrupt conditions for this host channel. */ 831 writel(0x3fff, &hc_regs->hcint); 832 833 /* Set host channel enable after all other setup is complete. */ 834 clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK | 835 DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS | 836 DWC2_HCCHAR_ODDFRM, 837 (1 << DWC2_HCCHAR_MULTICNT_OFFSET) | 838 (odd_frame << DWC2_HCCHAR_ODDFRM_OFFSET) | 839 DWC2_HCCHAR_CHEN); 840 841 ret = wait_for_chhltd(hc_regs, &sub, pid); 842 if (ret < 0) 843 return ret; 844 845 if (in) { 846 xfer_len -= sub; 847 848 invalidate_dcache_range((unsigned long)aligned_buffer, 849 (unsigned long)aligned_buffer + 850 roundup(xfer_len, ARCH_DMA_MINALIGN)); 851 852 memcpy(buffer, aligned_buffer, xfer_len); 853 } 854 *actual_len = xfer_len; 855 856 return ret; 857 } 858 859 int chunk_msg(struct dwc2_priv *priv, struct usb_device *dev, 860 unsigned long pipe, u8 *pid, int in, void *buffer, int len) 861 { 862 struct dwc2_core_regs *regs = priv->regs; 863 struct dwc2_hc_regs *hc_regs = ®s->hc_regs[DWC2_HC_CHANNEL]; 864 struct dwc2_host_regs *host_regs = ®s->host_regs; 865 int devnum = usb_pipedevice(pipe); 866 int ep = usb_pipeendpoint(pipe); 867 int max = usb_maxpacket(dev, pipe); 868 int eptype = dwc2_eptype[usb_pipetype(pipe)]; 869 int done = 0; 870 int ret = 0; 871 int do_split = 0; 872 int complete_split = 0; 873 uint32_t xfer_len; 874 uint32_t num_packets; 875 int stop_transfer = 0; 876 uint32_t max_xfer_len; 877 int ssplit_frame_num = 0; 878 879 debug("%s: msg: pipe %lx pid %d in %d len %d\n", __func__, pipe, *pid, 880 in, len); 881 882 max_xfer_len = CONFIG_DWC2_MAX_PACKET_COUNT * max; 883 if (max_xfer_len > CONFIG_DWC2_MAX_TRANSFER_SIZE) 884 max_xfer_len = CONFIG_DWC2_MAX_TRANSFER_SIZE; 885 if (max_xfer_len > DWC2_DATA_BUF_SIZE) 886 max_xfer_len = DWC2_DATA_BUF_SIZE; 887 888 /* Make sure that max_xfer_len is a multiple of max packet size. */ 889 num_packets = max_xfer_len / max; 890 max_xfer_len = num_packets * max; 891 892 /* Initialize channel */ 893 dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, dev, devnum, ep, in, 894 eptype, max); 895 896 /* Check if the target is a FS/LS device behind a HS hub */ 897 if (dev->speed != USB_SPEED_HIGH) { 898 uint8_t hub_addr; 899 uint8_t hub_port; 900 uint32_t hprt0 = readl(®s->hprt0); 901 if ((hprt0 & DWC2_HPRT0_PRTSPD_MASK) == 902 DWC2_HPRT0_PRTSPD_HIGH) { 903 usb_find_usb2_hub_address_port(dev, &hub_addr, 904 &hub_port); 905 dwc_otg_hc_init_split(hc_regs, hub_addr, hub_port); 906 907 do_split = 1; 908 num_packets = 1; 909 max_xfer_len = max; 910 } 911 } 912 913 do { 914 int actual_len = 0; 915 uint32_t hcint; 916 int odd_frame = 0; 917 xfer_len = len - done; 918 919 if (xfer_len > max_xfer_len) 920 xfer_len = max_xfer_len; 921 else if (xfer_len > max) 922 num_packets = (xfer_len + max - 1) / max; 923 else 924 num_packets = 1; 925 926 if (complete_split) 927 setbits_le32(&hc_regs->hcsplt, DWC2_HCSPLT_COMPSPLT); 928 else if (do_split) 929 clrbits_le32(&hc_regs->hcsplt, DWC2_HCSPLT_COMPSPLT); 930 931 if (eptype == DWC2_HCCHAR_EPTYPE_INTR) { 932 int uframe_num = readl(&host_regs->hfnum); 933 if (!(uframe_num & 0x1)) 934 odd_frame = 1; 935 } 936 937 ret = transfer_chunk(hc_regs, priv->aligned_buffer, pid, 938 in, (char *)buffer + done, num_packets, 939 xfer_len, &actual_len, odd_frame); 940 941 hcint = readl(&hc_regs->hcint); 942 if (complete_split) { 943 stop_transfer = 0; 944 if (hcint & DWC2_HCINT_NYET) { 945 ret = 0; 946 int frame_num = DWC2_HFNUM_MAX_FRNUM & 947 readl(&host_regs->hfnum); 948 if (((frame_num - ssplit_frame_num) & 949 DWC2_HFNUM_MAX_FRNUM) > 4) 950 ret = -EAGAIN; 951 } else 952 complete_split = 0; 953 } else if (do_split) { 954 if (hcint & DWC2_HCINT_ACK) { 955 ssplit_frame_num = DWC2_HFNUM_MAX_FRNUM & 956 readl(&host_regs->hfnum); 957 ret = 0; 958 complete_split = 1; 959 } 960 } 961 962 if (ret) 963 break; 964 965 if (actual_len < xfer_len) 966 stop_transfer = 1; 967 968 done += actual_len; 969 970 /* Transactions are done when when either all data is transferred or 971 * there is a short transfer. In case of a SPLIT make sure the CSPLIT 972 * is executed. 973 */ 974 } while (((done < len) && !stop_transfer) || complete_split); 975 976 writel(0, &hc_regs->hcintmsk); 977 writel(0xFFFFFFFF, &hc_regs->hcint); 978 979 dev->status = 0; 980 dev->act_len = done; 981 982 return ret; 983 } 984 985 /* U-Boot USB transmission interface */ 986 int _submit_bulk_msg(struct dwc2_priv *priv, struct usb_device *dev, 987 unsigned long pipe, void *buffer, int len) 988 { 989 int devnum = usb_pipedevice(pipe); 990 int ep = usb_pipeendpoint(pipe); 991 u8* pid; 992 993 if ((devnum >= MAX_DEVICE) || (devnum == priv->root_hub_devnum)) { 994 dev->status = 0; 995 return -EINVAL; 996 } 997 998 if (usb_pipein(pipe)) 999 pid = &priv->in_data_toggle[devnum][ep]; 1000 else 1001 pid = &priv->out_data_toggle[devnum][ep]; 1002 1003 return chunk_msg(priv, dev, pipe, pid, usb_pipein(pipe), buffer, len); 1004 } 1005 1006 static int _submit_control_msg(struct dwc2_priv *priv, struct usb_device *dev, 1007 unsigned long pipe, void *buffer, int len, 1008 struct devrequest *setup) 1009 { 1010 int devnum = usb_pipedevice(pipe); 1011 int ret, act_len; 1012 u8 pid; 1013 /* For CONTROL endpoint pid should start with DATA1 */ 1014 int status_direction; 1015 1016 if (devnum == priv->root_hub_devnum) { 1017 dev->status = 0; 1018 dev->speed = USB_SPEED_HIGH; 1019 return dwc_otg_submit_rh_msg(priv, dev, pipe, buffer, len, 1020 setup); 1021 } 1022 1023 /* SETUP stage */ 1024 pid = DWC2_HC_PID_SETUP; 1025 do { 1026 ret = chunk_msg(priv, dev, pipe, &pid, 0, setup, 8); 1027 } while (ret == -EAGAIN); 1028 if (ret) 1029 return ret; 1030 1031 /* DATA stage */ 1032 act_len = 0; 1033 if (buffer) { 1034 pid = DWC2_HC_PID_DATA1; 1035 do { 1036 ret = chunk_msg(priv, dev, pipe, &pid, usb_pipein(pipe), 1037 buffer, len); 1038 act_len += dev->act_len; 1039 buffer += dev->act_len; 1040 len -= dev->act_len; 1041 } while (ret == -EAGAIN); 1042 if (ret) 1043 return ret; 1044 status_direction = usb_pipeout(pipe); 1045 } else { 1046 /* No-data CONTROL always ends with an IN transaction */ 1047 status_direction = 1; 1048 } 1049 1050 /* STATUS stage */ 1051 pid = DWC2_HC_PID_DATA1; 1052 do { 1053 ret = chunk_msg(priv, dev, pipe, &pid, status_direction, 1054 priv->status_buffer, 0); 1055 } while (ret == -EAGAIN); 1056 if (ret) 1057 return ret; 1058 1059 dev->act_len = act_len; 1060 1061 return 0; 1062 } 1063 1064 int _submit_int_msg(struct dwc2_priv *priv, struct usb_device *dev, 1065 unsigned long pipe, void *buffer, int len, int interval) 1066 { 1067 unsigned long timeout; 1068 int ret; 1069 1070 /* FIXME: what is interval? */ 1071 1072 timeout = get_timer(0) + USB_TIMEOUT_MS(pipe); 1073 for (;;) { 1074 if (get_timer(0) > timeout) { 1075 printf("Timeout poll on interrupt endpoint\n"); 1076 return -ETIMEDOUT; 1077 } 1078 ret = _submit_bulk_msg(priv, dev, pipe, buffer, len); 1079 if (ret != -EAGAIN) 1080 return ret; 1081 } 1082 } 1083 1084 static int dwc2_init_common(struct udevice *dev, struct dwc2_priv *priv) 1085 { 1086 struct dwc2_core_regs *regs = priv->regs; 1087 uint32_t snpsid; 1088 int i, j; 1089 1090 snpsid = readl(®s->gsnpsid); 1091 printf("Core Release: %x.%03x\n", snpsid >> 12 & 0xf, snpsid & 0xfff); 1092 1093 if ((snpsid & DWC2_SNPSID_DEVID_MASK) != DWC2_SNPSID_DEVID_VER_2xx && 1094 (snpsid & DWC2_SNPSID_DEVID_MASK) != DWC2_SNPSID_DEVID_VER_3xx) { 1095 printf("SNPSID invalid (not DWC2 OTG device): %08x\n", snpsid); 1096 return -ENODEV; 1097 } 1098 1099 #ifdef CONFIG_DWC2_PHY_ULPI_EXT_VBUS 1100 priv->ext_vbus = 1; 1101 #else 1102 priv->ext_vbus = 0; 1103 #endif 1104 1105 dwc_otg_core_init(priv); 1106 dwc_otg_core_host_init(dev, regs); 1107 1108 clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA | 1109 DWC2_HPRT0_PRTCONNDET | DWC2_HPRT0_PRTENCHNG | 1110 DWC2_HPRT0_PRTOVRCURRCHNG, 1111 DWC2_HPRT0_PRTRST); 1112 mdelay(50); 1113 clrbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA | DWC2_HPRT0_PRTCONNDET | 1114 DWC2_HPRT0_PRTENCHNG | DWC2_HPRT0_PRTOVRCURRCHNG | 1115 DWC2_HPRT0_PRTRST); 1116 1117 for (i = 0; i < MAX_DEVICE; i++) { 1118 for (j = 0; j < MAX_ENDPOINT; j++) { 1119 priv->in_data_toggle[i][j] = DWC2_HC_PID_DATA0; 1120 priv->out_data_toggle[i][j] = DWC2_HC_PID_DATA0; 1121 } 1122 } 1123 1124 /* 1125 * Add a 1 second delay here. This gives the host controller 1126 * a bit time before the comminucation with the USB devices 1127 * is started (the bus is scanned) and fixes the USB detection 1128 * problems with some problematic USB keys. 1129 */ 1130 if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST) 1131 mdelay(1000); 1132 1133 return 0; 1134 } 1135 1136 static void dwc2_uninit_common(struct dwc2_core_regs *regs) 1137 { 1138 /* Put everything in reset. */ 1139 clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA | 1140 DWC2_HPRT0_PRTCONNDET | DWC2_HPRT0_PRTENCHNG | 1141 DWC2_HPRT0_PRTOVRCURRCHNG, 1142 DWC2_HPRT0_PRTRST); 1143 } 1144 1145 #ifndef CONFIG_DM_USB 1146 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1147 int len, struct devrequest *setup) 1148 { 1149 return _submit_control_msg(&local, dev, pipe, buffer, len, setup); 1150 } 1151 1152 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1153 int len) 1154 { 1155 return _submit_bulk_msg(&local, dev, pipe, buffer, len); 1156 } 1157 1158 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1159 int len, int interval) 1160 { 1161 return _submit_int_msg(&local, dev, pipe, buffer, len, interval); 1162 } 1163 1164 /* U-Boot USB control interface */ 1165 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) 1166 { 1167 struct dwc2_priv *priv = &local; 1168 1169 memset(priv, '\0', sizeof(*priv)); 1170 priv->root_hub_devnum = 0; 1171 priv->regs = (struct dwc2_core_regs *)CONFIG_USB_DWC2_REG_ADDR; 1172 priv->aligned_buffer = aligned_buffer_addr; 1173 priv->status_buffer = status_buffer_addr; 1174 1175 /* board-dependant init */ 1176 if (board_usb_init(index, USB_INIT_HOST)) 1177 return -1; 1178 1179 return dwc2_init_common(NULL, priv); 1180 } 1181 1182 int usb_lowlevel_stop(int index) 1183 { 1184 dwc2_uninit_common(local.regs); 1185 1186 return 0; 1187 } 1188 #endif 1189 1190 #ifdef CONFIG_DM_USB 1191 static int dwc2_submit_control_msg(struct udevice *dev, struct usb_device *udev, 1192 unsigned long pipe, void *buffer, int length, 1193 struct devrequest *setup) 1194 { 1195 struct dwc2_priv *priv = dev_get_priv(dev); 1196 1197 debug("%s: dev='%s', udev=%p, udev->dev='%s', portnr=%d\n", __func__, 1198 dev->name, udev, udev->dev->name, udev->portnr); 1199 1200 return _submit_control_msg(priv, udev, pipe, buffer, length, setup); 1201 } 1202 1203 static int dwc2_submit_bulk_msg(struct udevice *dev, struct usb_device *udev, 1204 unsigned long pipe, void *buffer, int length) 1205 { 1206 struct dwc2_priv *priv = dev_get_priv(dev); 1207 1208 debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); 1209 1210 return _submit_bulk_msg(priv, udev, pipe, buffer, length); 1211 } 1212 1213 static int dwc2_submit_int_msg(struct udevice *dev, struct usb_device *udev, 1214 unsigned long pipe, void *buffer, int length, 1215 int interval) 1216 { 1217 struct dwc2_priv *priv = dev_get_priv(dev); 1218 1219 debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); 1220 1221 return _submit_int_msg(priv, udev, pipe, buffer, length, interval); 1222 } 1223 1224 static int dwc2_usb_ofdata_to_platdata(struct udevice *dev) 1225 { 1226 struct dwc2_priv *priv = dev_get_priv(dev); 1227 const void *prop; 1228 fdt_addr_t addr; 1229 1230 addr = dev_get_addr(dev); 1231 if (addr == FDT_ADDR_T_NONE) 1232 return -EINVAL; 1233 priv->regs = (struct dwc2_core_regs *)addr; 1234 1235 prop = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), 1236 "disable-over-current", NULL); 1237 if (prop) 1238 priv->oc_disable = true; 1239 1240 return 0; 1241 } 1242 1243 static int dwc2_usb_probe(struct udevice *dev) 1244 { 1245 struct dwc2_priv *priv = dev_get_priv(dev); 1246 struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev); 1247 1248 bus_priv->desc_before_addr = true; 1249 1250 return dwc2_init_common(dev, priv); 1251 } 1252 1253 static int dwc2_usb_remove(struct udevice *dev) 1254 { 1255 struct dwc2_priv *priv = dev_get_priv(dev); 1256 1257 dwc2_uninit_common(priv->regs); 1258 1259 return 0; 1260 } 1261 1262 struct dm_usb_ops dwc2_usb_ops = { 1263 .control = dwc2_submit_control_msg, 1264 .bulk = dwc2_submit_bulk_msg, 1265 .interrupt = dwc2_submit_int_msg, 1266 }; 1267 1268 static const struct udevice_id dwc2_usb_ids[] = { 1269 { .compatible = "brcm,bcm2835-usb" }, 1270 { .compatible = "snps,dwc2" }, 1271 { } 1272 }; 1273 1274 U_BOOT_DRIVER(usb_dwc2) = { 1275 .name = "dwc2_usb", 1276 .id = UCLASS_USB, 1277 .of_match = dwc2_usb_ids, 1278 .ofdata_to_platdata = dwc2_usb_ofdata_to_platdata, 1279 .probe = dwc2_usb_probe, 1280 .remove = dwc2_usb_remove, 1281 .ops = &dwc2_usb_ops, 1282 .priv_auto_alloc_size = sizeof(struct dwc2_priv), 1283 .flags = DM_FLAG_ALLOC_PRIV_DMA, 1284 }; 1285 #endif 1286