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