1 /* 2 * (C) Copyright 2008 3 * Texas Instruments, <www.ti.com> 4 * Sukumar Ghorai <s-ghorai@ti.com> 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation's version 2 of 12 * the License. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 22 * MA 02111-1307 USA 23 */ 24 25 #include <config.h> 26 #include <common.h> 27 #include <malloc.h> 28 #include <mmc.h> 29 #include <part.h> 30 #include <i2c.h> 31 #include <twl4030.h> 32 #include <twl6030.h> 33 #include <palmas.h> 34 #include <asm/io.h> 35 #include <asm/arch/mmc_host_def.h> 36 #if !defined(CONFIG_SOC_KEYSTONE) 37 #include <asm/gpio.h> 38 #include <asm/arch/sys_proto.h> 39 #endif 40 #ifdef CONFIG_MMC_OMAP36XX_PINS 41 #include <asm/arch/mux.h> 42 #endif 43 #include <dm.h> 44 45 DECLARE_GLOBAL_DATA_PTR; 46 47 /* simplify defines to OMAP_HSMMC_USE_GPIO */ 48 #if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \ 49 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT)) 50 #define OMAP_HSMMC_USE_GPIO 51 #else 52 #undef OMAP_HSMMC_USE_GPIO 53 #endif 54 55 /* common definitions for all OMAPs */ 56 #define SYSCTL_SRC (1 << 25) 57 #define SYSCTL_SRD (1 << 26) 58 59 struct omap2_mmc_platform_config { 60 u32 reg_offset; 61 }; 62 63 struct omap_hsmmc_data { 64 struct hsmmc *base_addr; 65 #ifndef CONFIG_DM_MMC 66 struct mmc_config cfg; 67 #endif 68 #ifdef OMAP_HSMMC_USE_GPIO 69 #ifdef CONFIG_DM_MMC 70 struct gpio_desc cd_gpio; /* Change Detect GPIO */ 71 struct gpio_desc wp_gpio; /* Write Protect GPIO */ 72 bool cd_inverted; 73 #else 74 int cd_gpio; 75 int wp_gpio; 76 #endif 77 #endif 78 }; 79 80 /* If we fail after 1 second wait, something is really bad */ 81 #define MAX_RETRY_MS 1000 82 83 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size); 84 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, 85 unsigned int siz); 86 87 static inline struct omap_hsmmc_data *omap_hsmmc_get_data(struct mmc *mmc) 88 { 89 #ifdef CONFIG_DM_MMC 90 return dev_get_priv(mmc->dev); 91 #else 92 return (struct omap_hsmmc_data *)mmc->priv; 93 #endif 94 } 95 static inline struct mmc_config *omap_hsmmc_get_cfg(struct mmc *mmc) 96 { 97 #ifdef CONFIG_DM_MMC 98 struct omap_hsmmc_plat *plat = dev_get_platdata(mmc->dev); 99 return &plat->cfg; 100 #else 101 return &((struct omap_hsmmc_data *)mmc->priv)->cfg; 102 #endif 103 } 104 105 #if defined(OMAP_HSMMC_USE_GPIO) && !defined(CONFIG_DM_MMC) 106 static int omap_mmc_setup_gpio_in(int gpio, const char *label) 107 { 108 int ret; 109 110 #ifndef CONFIG_DM_GPIO 111 if (!gpio_is_valid(gpio)) 112 return -1; 113 #endif 114 ret = gpio_request(gpio, label); 115 if (ret) 116 return ret; 117 118 ret = gpio_direction_input(gpio); 119 if (ret) 120 return ret; 121 122 return gpio; 123 } 124 #endif 125 126 static unsigned char mmc_board_init(struct mmc *mmc) 127 { 128 #if defined(CONFIG_OMAP34XX) 129 struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc); 130 t2_t *t2_base = (t2_t *)T2_BASE; 131 struct prcm *prcm_base = (struct prcm *)PRCM_BASE; 132 u32 pbias_lite; 133 #ifdef CONFIG_MMC_OMAP36XX_PINS 134 u32 wkup_ctrl = readl(OMAP34XX_CTRL_WKUP_CTRL); 135 #endif 136 137 pbias_lite = readl(&t2_base->pbias_lite); 138 pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0); 139 #ifdef CONFIG_TARGET_OMAP3_CAIRO 140 /* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */ 141 pbias_lite &= ~PBIASLITEVMODE0; 142 #endif 143 #ifdef CONFIG_MMC_OMAP36XX_PINS 144 if (get_cpu_family() == CPU_OMAP36XX) { 145 /* Disable extended drain IO before changing PBIAS */ 146 wkup_ctrl &= ~OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ; 147 writel(wkup_ctrl, OMAP34XX_CTRL_WKUP_CTRL); 148 } 149 #endif 150 writel(pbias_lite, &t2_base->pbias_lite); 151 152 writel(pbias_lite | PBIASLITEPWRDNZ1 | 153 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0, 154 &t2_base->pbias_lite); 155 156 #ifdef CONFIG_MMC_OMAP36XX_PINS 157 if (get_cpu_family() == CPU_OMAP36XX) 158 /* Enable extended drain IO after changing PBIAS */ 159 writel(wkup_ctrl | 160 OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ, 161 OMAP34XX_CTRL_WKUP_CTRL); 162 #endif 163 writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL, 164 &t2_base->devconf0); 165 166 writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL, 167 &t2_base->devconf1); 168 169 /* Change from default of 52MHz to 26MHz if necessary */ 170 if (!(cfg->host_caps & MMC_MODE_HS_52MHz)) 171 writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL, 172 &t2_base->ctl_prog_io1); 173 174 writel(readl(&prcm_base->fclken1_core) | 175 EN_MMC1 | EN_MMC2 | EN_MMC3, 176 &prcm_base->fclken1_core); 177 178 writel(readl(&prcm_base->iclken1_core) | 179 EN_MMC1 | EN_MMC2 | EN_MMC3, 180 &prcm_base->iclken1_core); 181 #endif 182 183 #if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX) 184 /* PBIAS config needed for MMC1 only */ 185 if (mmc_get_blk_desc(mmc)->devnum == 0) 186 vmmc_pbias_config(LDO_VOLT_3V0); 187 #endif 188 189 return 0; 190 } 191 192 void mmc_init_stream(struct hsmmc *mmc_base) 193 { 194 ulong start; 195 196 writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con); 197 198 writel(MMC_CMD0, &mmc_base->cmd); 199 start = get_timer(0); 200 while (!(readl(&mmc_base->stat) & CC_MASK)) { 201 if (get_timer(0) - start > MAX_RETRY_MS) { 202 printf("%s: timedout waiting for cc!\n", __func__); 203 return; 204 } 205 } 206 writel(CC_MASK, &mmc_base->stat) 207 ; 208 writel(MMC_CMD0, &mmc_base->cmd) 209 ; 210 start = get_timer(0); 211 while (!(readl(&mmc_base->stat) & CC_MASK)) { 212 if (get_timer(0) - start > MAX_RETRY_MS) { 213 printf("%s: timedout waiting for cc2!\n", __func__); 214 return; 215 } 216 } 217 writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con); 218 } 219 220 static int omap_hsmmc_init_setup(struct mmc *mmc) 221 { 222 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); 223 struct hsmmc *mmc_base; 224 unsigned int reg_val; 225 unsigned int dsor; 226 ulong start; 227 228 mmc_base = priv->base_addr; 229 mmc_board_init(mmc); 230 231 writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET, 232 &mmc_base->sysconfig); 233 start = get_timer(0); 234 while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) { 235 if (get_timer(0) - start > MAX_RETRY_MS) { 236 printf("%s: timedout waiting for cc2!\n", __func__); 237 return -ETIMEDOUT; 238 } 239 } 240 writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl); 241 start = get_timer(0); 242 while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) { 243 if (get_timer(0) - start > MAX_RETRY_MS) { 244 printf("%s: timedout waiting for softresetall!\n", 245 __func__); 246 return -ETIMEDOUT; 247 } 248 } 249 writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl); 250 writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP, 251 &mmc_base->capa); 252 253 reg_val = readl(&mmc_base->con) & RESERVED_MASK; 254 255 writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH | 256 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK | 257 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con); 258 259 dsor = 240; 260 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), 261 (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); 262 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, 263 (dsor << CLKD_OFFSET) | ICE_OSCILLATE); 264 start = get_timer(0); 265 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { 266 if (get_timer(0) - start > MAX_RETRY_MS) { 267 printf("%s: timedout waiting for ics!\n", __func__); 268 return -ETIMEDOUT; 269 } 270 } 271 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); 272 273 writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl); 274 275 writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE | 276 IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC, 277 &mmc_base->ie); 278 279 mmc_init_stream(mmc_base); 280 281 return 0; 282 } 283 284 /* 285 * MMC controller internal finite state machine reset 286 * 287 * Used to reset command or data internal state machines, using respectively 288 * SRC or SRD bit of SYSCTL register 289 */ 290 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit) 291 { 292 ulong start; 293 294 mmc_reg_out(&mmc_base->sysctl, bit, bit); 295 296 /* 297 * CMD(DAT) lines reset procedures are slightly different 298 * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx). 299 * According to OMAP3 TRM: 300 * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it 301 * returns to 0x0. 302 * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset 303 * procedure steps must be as follows: 304 * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in 305 * MMCHS_SYSCTL register (SD_SYSCTL for AM335x). 306 * 2. Poll the SRC(SRD) bit until it is set to 0x1. 307 * 3. Wait until the SRC (SRD) bit returns to 0x0 308 * (reset procedure is completed). 309 */ 310 #if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \ 311 defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX) 312 if (!(readl(&mmc_base->sysctl) & bit)) { 313 start = get_timer(0); 314 while (!(readl(&mmc_base->sysctl) & bit)) { 315 if (get_timer(0) - start > MAX_RETRY_MS) 316 return; 317 } 318 } 319 #endif 320 start = get_timer(0); 321 while ((readl(&mmc_base->sysctl) & bit) != 0) { 322 if (get_timer(0) - start > MAX_RETRY_MS) { 323 printf("%s: timedout waiting for sysctl %x to clear\n", 324 __func__, bit); 325 return; 326 } 327 } 328 } 329 #ifndef CONFIG_DM_MMC 330 static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, 331 struct mmc_data *data) 332 { 333 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); 334 #else 335 static int omap_hsmmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, 336 struct mmc_data *data) 337 { 338 struct omap_hsmmc_data *priv = dev_get_priv(dev); 339 #endif 340 struct hsmmc *mmc_base; 341 unsigned int flags, mmc_stat; 342 ulong start; 343 344 mmc_base = priv->base_addr; 345 start = get_timer(0); 346 while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) { 347 if (get_timer(0) - start > MAX_RETRY_MS) { 348 printf("%s: timedout waiting on cmd inhibit to clear\n", 349 __func__); 350 return -ETIMEDOUT; 351 } 352 } 353 writel(0xFFFFFFFF, &mmc_base->stat); 354 start = get_timer(0); 355 while (readl(&mmc_base->stat)) { 356 if (get_timer(0) - start > MAX_RETRY_MS) { 357 printf("%s: timedout waiting for STAT (%x) to clear\n", 358 __func__, readl(&mmc_base->stat)); 359 return -ETIMEDOUT; 360 } 361 } 362 /* 363 * CMDREG 364 * CMDIDX[13:8] : Command index 365 * DATAPRNT[5] : Data Present Select 366 * ENCMDIDX[4] : Command Index Check Enable 367 * ENCMDCRC[3] : Command CRC Check Enable 368 * RSPTYP[1:0] 369 * 00 = No Response 370 * 01 = Length 136 371 * 10 = Length 48 372 * 11 = Length 48 Check busy after response 373 */ 374 /* Delay added before checking the status of frq change 375 * retry not supported by mmc.c(core file) 376 */ 377 if (cmd->cmdidx == SD_CMD_APP_SEND_SCR) 378 udelay(50000); /* wait 50 ms */ 379 380 if (!(cmd->resp_type & MMC_RSP_PRESENT)) 381 flags = 0; 382 else if (cmd->resp_type & MMC_RSP_136) 383 flags = RSP_TYPE_LGHT136 | CICE_NOCHECK; 384 else if (cmd->resp_type & MMC_RSP_BUSY) 385 flags = RSP_TYPE_LGHT48B; 386 else 387 flags = RSP_TYPE_LGHT48; 388 389 /* enable default flags */ 390 flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK | 391 MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE); 392 393 if (cmd->resp_type & MMC_RSP_CRC) 394 flags |= CCCE_CHECK; 395 if (cmd->resp_type & MMC_RSP_OPCODE) 396 flags |= CICE_CHECK; 397 398 if (data) { 399 if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) || 400 (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) { 401 flags |= (MSBS_MULTIBLK | BCE_ENABLE); 402 data->blocksize = 512; 403 writel(data->blocksize | (data->blocks << 16), 404 &mmc_base->blk); 405 } else 406 writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk); 407 408 if (data->flags & MMC_DATA_READ) 409 flags |= (DP_DATA | DDIR_READ); 410 else 411 flags |= (DP_DATA | DDIR_WRITE); 412 } 413 414 writel(cmd->cmdarg, &mmc_base->arg); 415 udelay(20); /* To fix "No status update" error on eMMC */ 416 writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd); 417 418 start = get_timer(0); 419 do { 420 mmc_stat = readl(&mmc_base->stat); 421 if (get_timer(0) - start > MAX_RETRY_MS) { 422 printf("%s : timeout: No status update\n", __func__); 423 return -ETIMEDOUT; 424 } 425 } while (!mmc_stat); 426 427 if ((mmc_stat & IE_CTO) != 0) { 428 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); 429 return -ETIMEDOUT; 430 } else if ((mmc_stat & ERRI_MASK) != 0) 431 return -1; 432 433 if (mmc_stat & CC_MASK) { 434 writel(CC_MASK, &mmc_base->stat); 435 if (cmd->resp_type & MMC_RSP_PRESENT) { 436 if (cmd->resp_type & MMC_RSP_136) { 437 /* response type 2 */ 438 cmd->response[3] = readl(&mmc_base->rsp10); 439 cmd->response[2] = readl(&mmc_base->rsp32); 440 cmd->response[1] = readl(&mmc_base->rsp54); 441 cmd->response[0] = readl(&mmc_base->rsp76); 442 } else 443 /* response types 1, 1b, 3, 4, 5, 6 */ 444 cmd->response[0] = readl(&mmc_base->rsp10); 445 } 446 } 447 448 if (data && (data->flags & MMC_DATA_READ)) { 449 mmc_read_data(mmc_base, data->dest, 450 data->blocksize * data->blocks); 451 } else if (data && (data->flags & MMC_DATA_WRITE)) { 452 mmc_write_data(mmc_base, data->src, 453 data->blocksize * data->blocks); 454 } 455 return 0; 456 } 457 458 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size) 459 { 460 unsigned int *output_buf = (unsigned int *)buf; 461 unsigned int mmc_stat; 462 unsigned int count; 463 464 /* 465 * Start Polled Read 466 */ 467 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; 468 count /= 4; 469 470 while (size) { 471 ulong start = get_timer(0); 472 do { 473 mmc_stat = readl(&mmc_base->stat); 474 if (get_timer(0) - start > MAX_RETRY_MS) { 475 printf("%s: timedout waiting for status!\n", 476 __func__); 477 return -ETIMEDOUT; 478 } 479 } while (mmc_stat == 0); 480 481 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0) 482 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); 483 484 if ((mmc_stat & ERRI_MASK) != 0) 485 return 1; 486 487 if (mmc_stat & BRR_MASK) { 488 unsigned int k; 489 490 writel(readl(&mmc_base->stat) | BRR_MASK, 491 &mmc_base->stat); 492 for (k = 0; k < count; k++) { 493 *output_buf = readl(&mmc_base->data); 494 output_buf++; 495 } 496 size -= (count*4); 497 } 498 499 if (mmc_stat & BWR_MASK) 500 writel(readl(&mmc_base->stat) | BWR_MASK, 501 &mmc_base->stat); 502 503 if (mmc_stat & TC_MASK) { 504 writel(readl(&mmc_base->stat) | TC_MASK, 505 &mmc_base->stat); 506 break; 507 } 508 } 509 return 0; 510 } 511 512 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, 513 unsigned int size) 514 { 515 unsigned int *input_buf = (unsigned int *)buf; 516 unsigned int mmc_stat; 517 unsigned int count; 518 519 /* 520 * Start Polled Write 521 */ 522 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; 523 count /= 4; 524 525 while (size) { 526 ulong start = get_timer(0); 527 do { 528 mmc_stat = readl(&mmc_base->stat); 529 if (get_timer(0) - start > MAX_RETRY_MS) { 530 printf("%s: timedout waiting for status!\n", 531 __func__); 532 return -ETIMEDOUT; 533 } 534 } while (mmc_stat == 0); 535 536 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0) 537 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); 538 539 if ((mmc_stat & ERRI_MASK) != 0) 540 return 1; 541 542 if (mmc_stat & BWR_MASK) { 543 unsigned int k; 544 545 writel(readl(&mmc_base->stat) | BWR_MASK, 546 &mmc_base->stat); 547 for (k = 0; k < count; k++) { 548 writel(*input_buf, &mmc_base->data); 549 input_buf++; 550 } 551 size -= (count*4); 552 } 553 554 if (mmc_stat & BRR_MASK) 555 writel(readl(&mmc_base->stat) | BRR_MASK, 556 &mmc_base->stat); 557 558 if (mmc_stat & TC_MASK) { 559 writel(readl(&mmc_base->stat) | TC_MASK, 560 &mmc_base->stat); 561 break; 562 } 563 } 564 return 0; 565 } 566 567 #ifndef CONFIG_DM_MMC 568 static int omap_hsmmc_set_ios(struct mmc *mmc) 569 { 570 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); 571 #else 572 static int omap_hsmmc_set_ios(struct udevice *dev) 573 { 574 struct omap_hsmmc_data *priv = dev_get_priv(dev); 575 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); 576 struct mmc *mmc = upriv->mmc; 577 #endif 578 struct hsmmc *mmc_base; 579 unsigned int dsor = 0; 580 ulong start; 581 582 mmc_base = priv->base_addr; 583 /* configue bus width */ 584 switch (mmc->bus_width) { 585 case 8: 586 writel(readl(&mmc_base->con) | DTW_8_BITMODE, 587 &mmc_base->con); 588 break; 589 590 case 4: 591 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, 592 &mmc_base->con); 593 writel(readl(&mmc_base->hctl) | DTW_4_BITMODE, 594 &mmc_base->hctl); 595 break; 596 597 case 1: 598 default: 599 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, 600 &mmc_base->con); 601 writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE, 602 &mmc_base->hctl); 603 break; 604 } 605 606 /* configure clock with 96Mhz system clock. 607 */ 608 if (mmc->clock != 0) { 609 dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock); 610 if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock) 611 dsor++; 612 } 613 614 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), 615 (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); 616 617 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, 618 (dsor << CLKD_OFFSET) | ICE_OSCILLATE); 619 620 start = get_timer(0); 621 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { 622 if (get_timer(0) - start > MAX_RETRY_MS) { 623 printf("%s: timedout waiting for ics!\n", __func__); 624 return -ETIMEDOUT; 625 } 626 } 627 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); 628 629 return 0; 630 } 631 632 #ifdef OMAP_HSMMC_USE_GPIO 633 #ifdef CONFIG_DM_MMC 634 static int omap_hsmmc_getcd(struct udevice *dev) 635 { 636 struct omap_hsmmc_data *priv = dev_get_priv(dev); 637 int value; 638 639 value = dm_gpio_get_value(&priv->cd_gpio); 640 /* if no CD return as 1 */ 641 if (value < 0) 642 return 1; 643 644 if (priv->cd_inverted) 645 return !value; 646 return value; 647 } 648 649 static int omap_hsmmc_getwp(struct udevice *dev) 650 { 651 struct omap_hsmmc_data *priv = dev_get_priv(dev); 652 int value; 653 654 value = dm_gpio_get_value(&priv->wp_gpio); 655 /* if no WP return as 0 */ 656 if (value < 0) 657 return 0; 658 return value; 659 } 660 #else 661 static int omap_hsmmc_getcd(struct mmc *mmc) 662 { 663 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); 664 int cd_gpio; 665 666 /* if no CD return as 1 */ 667 cd_gpio = priv->cd_gpio; 668 if (cd_gpio < 0) 669 return 1; 670 671 /* NOTE: assumes card detect signal is active-low */ 672 return !gpio_get_value(cd_gpio); 673 } 674 675 static int omap_hsmmc_getwp(struct mmc *mmc) 676 { 677 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); 678 int wp_gpio; 679 680 /* if no WP return as 0 */ 681 wp_gpio = priv->wp_gpio; 682 if (wp_gpio < 0) 683 return 0; 684 685 /* NOTE: assumes write protect signal is active-high */ 686 return gpio_get_value(wp_gpio); 687 } 688 #endif 689 #endif 690 691 #ifdef CONFIG_DM_MMC 692 static const struct dm_mmc_ops omap_hsmmc_ops = { 693 .send_cmd = omap_hsmmc_send_cmd, 694 .set_ios = omap_hsmmc_set_ios, 695 #ifdef OMAP_HSMMC_USE_GPIO 696 .get_cd = omap_hsmmc_getcd, 697 .get_wp = omap_hsmmc_getwp, 698 #endif 699 }; 700 #else 701 static const struct mmc_ops omap_hsmmc_ops = { 702 .send_cmd = omap_hsmmc_send_cmd, 703 .set_ios = omap_hsmmc_set_ios, 704 .init = omap_hsmmc_init_setup, 705 #ifdef OMAP_HSMMC_USE_GPIO 706 .getcd = omap_hsmmc_getcd, 707 .getwp = omap_hsmmc_getwp, 708 #endif 709 }; 710 #endif 711 712 #ifndef CONFIG_DM_MMC 713 int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio, 714 int wp_gpio) 715 { 716 struct mmc *mmc; 717 struct omap_hsmmc_data *priv; 718 struct mmc_config *cfg; 719 uint host_caps_val; 720 721 priv = malloc(sizeof(*priv)); 722 if (priv == NULL) 723 return -1; 724 725 host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS; 726 727 switch (dev_index) { 728 case 0: 729 priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE; 730 break; 731 #ifdef OMAP_HSMMC2_BASE 732 case 1: 733 priv->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE; 734 #if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \ 735 defined(CONFIG_DRA7XX) || defined(CONFIG_AM33XX) || \ 736 defined(CONFIG_AM43XX) || defined(CONFIG_SOC_KEYSTONE)) && \ 737 defined(CONFIG_HSMMC2_8BIT) 738 /* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */ 739 host_caps_val |= MMC_MODE_8BIT; 740 #endif 741 break; 742 #endif 743 #ifdef OMAP_HSMMC3_BASE 744 case 2: 745 priv->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE; 746 #if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT) 747 /* Enable 8-bit interface for eMMC on DRA7XX */ 748 host_caps_val |= MMC_MODE_8BIT; 749 #endif 750 break; 751 #endif 752 default: 753 priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE; 754 return 1; 755 } 756 #ifdef OMAP_HSMMC_USE_GPIO 757 /* on error gpio values are set to -1, which is what we want */ 758 priv->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd"); 759 priv->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp"); 760 #endif 761 762 cfg = &priv->cfg; 763 764 cfg->name = "OMAP SD/MMC"; 765 cfg->ops = &omap_hsmmc_ops; 766 767 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; 768 cfg->host_caps = host_caps_val & ~host_caps_mask; 769 770 cfg->f_min = 400000; 771 772 if (f_max != 0) 773 cfg->f_max = f_max; 774 else { 775 if (cfg->host_caps & MMC_MODE_HS) { 776 if (cfg->host_caps & MMC_MODE_HS_52MHz) 777 cfg->f_max = 52000000; 778 else 779 cfg->f_max = 26000000; 780 } else 781 cfg->f_max = 20000000; 782 } 783 784 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; 785 786 #if defined(CONFIG_OMAP34XX) 787 /* 788 * Silicon revs 2.1 and older do not support multiblock transfers. 789 */ 790 if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21)) 791 cfg->b_max = 1; 792 #endif 793 mmc = mmc_create(cfg, priv); 794 if (mmc == NULL) 795 return -1; 796 797 return 0; 798 } 799 #else 800 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) 801 static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev) 802 { 803 struct omap_hsmmc_plat *plat = dev_get_platdata(dev); 804 struct mmc_config *cfg = &plat->cfg; 805 struct omap2_mmc_platform_config *data = 806 (struct omap2_mmc_platform_config *)dev_get_driver_data(dev); 807 const void *fdt = gd->fdt_blob; 808 int node = dev_of_offset(dev); 809 int val; 810 811 plat->base_addr = map_physmem(devfdt_get_addr(dev), 812 sizeof(struct hsmmc *), 813 MAP_NOCACHE) + data->reg_offset; 814 815 cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS; 816 val = fdtdec_get_int(fdt, node, "bus-width", -1); 817 if (val < 0) { 818 printf("error: bus-width property missing\n"); 819 return -ENOENT; 820 } 821 822 switch (val) { 823 case 0x8: 824 cfg->host_caps |= MMC_MODE_8BIT; 825 case 0x4: 826 cfg->host_caps |= MMC_MODE_4BIT; 827 break; 828 default: 829 printf("error: invalid bus-width property\n"); 830 return -ENOENT; 831 } 832 833 cfg->f_min = 400000; 834 cfg->f_max = fdtdec_get_int(fdt, node, "max-frequency", 52000000); 835 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; 836 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; 837 838 #ifdef OMAP_HSMMC_USE_GPIO 839 plat->cd_inverted = fdtdec_get_bool(fdt, node, "cd-inverted"); 840 #endif 841 842 return 0; 843 } 844 #endif 845 846 #ifdef CONFIG_BLK 847 848 static int omap_hsmmc_bind(struct udevice *dev) 849 { 850 struct omap_hsmmc_plat *plat = dev_get_platdata(dev); 851 852 return mmc_bind(dev, &plat->mmc, &plat->cfg); 853 } 854 #endif 855 static int omap_hsmmc_probe(struct udevice *dev) 856 { 857 struct omap_hsmmc_plat *plat = dev_get_platdata(dev); 858 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); 859 struct omap_hsmmc_data *priv = dev_get_priv(dev); 860 struct mmc_config *cfg = &plat->cfg; 861 struct mmc *mmc; 862 863 cfg->name = "OMAP SD/MMC"; 864 priv->base_addr = plat->base_addr; 865 #ifdef OMAP_HSMMC_USE_GPIO 866 priv->cd_inverted = plat->cd_inverted; 867 #endif 868 869 #ifdef CONFIG_BLK 870 mmc = &plat->mmc; 871 #else 872 mmc = mmc_create(cfg, priv); 873 if (mmc == NULL) 874 return -1; 875 #endif 876 877 #if defined(OMAP_HSMMC_USE_GPIO) && CONFIG_IS_ENABLED(OF_CONTROL) 878 gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN); 879 gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN); 880 #endif 881 882 mmc->dev = dev; 883 upriv->mmc = mmc; 884 885 return omap_hsmmc_init_setup(mmc); 886 } 887 888 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) 889 static const struct omap2_mmc_platform_config omap3_mmc_pdata = { 890 .reg_offset = 0, 891 }; 892 893 static const struct omap2_mmc_platform_config am33xx_mmc_pdata = { 894 .reg_offset = 0x100, 895 }; 896 897 static const struct omap2_mmc_platform_config omap4_mmc_pdata = { 898 .reg_offset = 0x100, 899 }; 900 901 static const struct udevice_id omap_hsmmc_ids[] = { 902 { 903 .compatible = "ti,omap3-hsmmc", 904 .data = (ulong)&omap3_mmc_pdata 905 }, 906 { 907 .compatible = "ti,omap4-hsmmc", 908 .data = (ulong)&omap4_mmc_pdata 909 }, 910 { 911 .compatible = "ti,am33xx-hsmmc", 912 .data = (ulong)&am33xx_mmc_pdata 913 }, 914 { } 915 }; 916 #endif 917 918 U_BOOT_DRIVER(omap_hsmmc) = { 919 .name = "omap_hsmmc", 920 .id = UCLASS_MMC, 921 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) 922 .of_match = omap_hsmmc_ids, 923 .ofdata_to_platdata = omap_hsmmc_ofdata_to_platdata, 924 .platdata_auto_alloc_size = sizeof(struct omap_hsmmc_plat), 925 #endif 926 #ifdef CONFIG_BLK 927 .bind = omap_hsmmc_bind, 928 #endif 929 .ops = &omap_hsmmc_ops, 930 .probe = omap_hsmmc_probe, 931 .priv_auto_alloc_size = sizeof(struct omap_hsmmc_data), 932 .flags = DM_FLAG_PRE_RELOC, 933 }; 934 #endif 935