uboot/drivers/mmc/omap_hsmmc.c
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   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 <cpu_func.h>
  28#include <log.h>
  29#include <malloc.h>
  30#include <memalign.h>
  31#include <mmc.h>
  32#include <part.h>
  33#include <i2c.h>
  34#if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
  35#include <palmas.h>
  36#endif
  37#include <asm/cache.h>
  38#include <asm/io.h>
  39#include <asm/arch/mmc_host_def.h>
  40#ifdef CONFIG_OMAP54XX
  41#include <asm/arch/mux_dra7xx.h>
  42#include <asm/arch/dra7xx_iodelay.h>
  43#endif
  44#if !defined(CONFIG_SOC_KEYSTONE)
  45#include <asm/gpio.h>
  46#include <asm/arch/sys_proto.h>
  47#endif
  48#ifdef CONFIG_MMC_OMAP36XX_PINS
  49#include <asm/arch/mux.h>
  50#endif
  51#include <dm.h>
  52#include <dm/devres.h>
  53#include <linux/bitops.h>
  54#include <linux/delay.h>
  55#include <linux/err.h>
  56#include <power/regulator.h>
  57#include <thermal.h>
  58
  59DECLARE_GLOBAL_DATA_PTR;
  60
  61/* simplify defines to OMAP_HSMMC_USE_GPIO */
  62#if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \
  63        (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
  64#define OMAP_HSMMC_USE_GPIO
  65#else
  66#undef OMAP_HSMMC_USE_GPIO
  67#endif
  68
  69/* common definitions for all OMAPs */
  70#define SYSCTL_SRC      (1 << 25)
  71#define SYSCTL_SRD      (1 << 26)
  72
  73#ifdef CONFIG_IODELAY_RECALIBRATION
  74struct omap_hsmmc_pinctrl_state {
  75        struct pad_conf_entry *padconf;
  76        int npads;
  77        struct iodelay_cfg_entry *iodelay;
  78        int niodelays;
  79};
  80#endif
  81
  82struct omap_hsmmc_data {
  83        struct hsmmc *base_addr;
  84#if !CONFIG_IS_ENABLED(DM_MMC)
  85        struct mmc_config cfg;
  86#endif
  87        uint bus_width;
  88        uint clock;
  89        ushort last_cmd;
  90#ifdef OMAP_HSMMC_USE_GPIO
  91#if CONFIG_IS_ENABLED(DM_MMC)
  92        struct gpio_desc cd_gpio;       /* Change Detect GPIO */
  93        struct gpio_desc wp_gpio;       /* Write Protect GPIO */
  94#else
  95        int cd_gpio;
  96        int wp_gpio;
  97#endif
  98#endif
  99#if CONFIG_IS_ENABLED(DM_MMC)
 100        enum bus_mode mode;
 101#endif
 102        u8 controller_flags;
 103#ifdef CONFIG_MMC_OMAP_HS_ADMA
 104        struct omap_hsmmc_adma_desc *adma_desc_table;
 105        uint desc_slot;
 106#endif
 107        const char *hw_rev;
 108        struct udevice *pbias_supply;
 109        uint signal_voltage;
 110#ifdef CONFIG_IODELAY_RECALIBRATION
 111        struct omap_hsmmc_pinctrl_state *default_pinctrl_state;
 112        struct omap_hsmmc_pinctrl_state *hs_pinctrl_state;
 113        struct omap_hsmmc_pinctrl_state *hs200_1_8v_pinctrl_state;
 114        struct omap_hsmmc_pinctrl_state *ddr_1_8v_pinctrl_state;
 115        struct omap_hsmmc_pinctrl_state *sdr12_pinctrl_state;
 116        struct omap_hsmmc_pinctrl_state *sdr25_pinctrl_state;
 117        struct omap_hsmmc_pinctrl_state *ddr50_pinctrl_state;
 118        struct omap_hsmmc_pinctrl_state *sdr50_pinctrl_state;
 119        struct omap_hsmmc_pinctrl_state *sdr104_pinctrl_state;
 120#endif
 121};
 122
 123struct omap_mmc_of_data {
 124        u8 controller_flags;
 125};
 126
 127#ifdef CONFIG_MMC_OMAP_HS_ADMA
 128struct omap_hsmmc_adma_desc {
 129        u8 attr;
 130        u8 reserved;
 131        u16 len;
 132        u32 addr;
 133};
 134
 135#define ADMA_MAX_LEN    63488
 136
 137/* Decriptor table defines */
 138#define ADMA_DESC_ATTR_VALID            BIT(0)
 139#define ADMA_DESC_ATTR_END              BIT(1)
 140#define ADMA_DESC_ATTR_INT              BIT(2)
 141#define ADMA_DESC_ATTR_ACT1             BIT(4)
 142#define ADMA_DESC_ATTR_ACT2             BIT(5)
 143
 144#define ADMA_DESC_TRANSFER_DATA         ADMA_DESC_ATTR_ACT2
 145#define ADMA_DESC_LINK_DESC     (ADMA_DESC_ATTR_ACT1 | ADMA_DESC_ATTR_ACT2)
 146#endif
 147
 148/* If we fail after 1 second wait, something is really bad */
 149#define MAX_RETRY_MS    1000
 150#define MMC_TIMEOUT_MS  20
 151
 152/* DMA transfers can take a long time if a lot a data is transferred.
 153 * The timeout must take in account the amount of data. Let's assume
 154 * that the time will never exceed 333 ms per MB (in other word we assume
 155 * that the bandwidth is always above 3MB/s).
 156 */
 157#define DMA_TIMEOUT_PER_MB      333
 158#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT           BIT(0)
 159#define OMAP_HSMMC_NO_1_8_V                     BIT(1)
 160#define OMAP_HSMMC_USE_ADMA                     BIT(2)
 161#define OMAP_HSMMC_REQUIRE_IODELAY              BIT(3)
 162
 163static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
 164static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
 165                        unsigned int siz);
 166static void omap_hsmmc_start_clock(struct hsmmc *mmc_base);
 167static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base);
 168static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit);
 169
 170static inline struct omap_hsmmc_data *omap_hsmmc_get_data(struct mmc *mmc)
 171{
 172#if CONFIG_IS_ENABLED(DM_MMC)
 173        return dev_get_priv(mmc->dev);
 174#else
 175        return (struct omap_hsmmc_data *)mmc->priv;
 176#endif
 177}
 178
 179#if defined(CONFIG_OMAP34XX) || defined(CONFIG_IODELAY_RECALIBRATION)
 180static inline struct mmc_config *omap_hsmmc_get_cfg(struct mmc *mmc)
 181{
 182#if CONFIG_IS_ENABLED(DM_MMC)
 183        struct omap_hsmmc_plat *plat = dev_get_platdata(mmc->dev);
 184        return &plat->cfg;
 185#else
 186        return &((struct omap_hsmmc_data *)mmc->priv)->cfg;
 187#endif
 188}
 189#endif
 190
 191#if defined(OMAP_HSMMC_USE_GPIO) && !CONFIG_IS_ENABLED(DM_MMC)
 192static int omap_mmc_setup_gpio_in(int gpio, const char *label)
 193{
 194        int ret;
 195
 196#if !CONFIG_IS_ENABLED(DM_GPIO)
 197        if (!gpio_is_valid(gpio))
 198                return -1;
 199#endif
 200        ret = gpio_request(gpio, label);
 201        if (ret)
 202                return ret;
 203
 204        ret = gpio_direction_input(gpio);
 205        if (ret)
 206                return ret;
 207
 208        return gpio;
 209}
 210#endif
 211
 212static unsigned char mmc_board_init(struct mmc *mmc)
 213{
 214#if defined(CONFIG_OMAP34XX)
 215        struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc);
 216        t2_t *t2_base = (t2_t *)T2_BASE;
 217        struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
 218        u32 pbias_lite;
 219#ifdef CONFIG_MMC_OMAP36XX_PINS
 220        u32 wkup_ctrl = readl(OMAP34XX_CTRL_WKUP_CTRL);
 221#endif
 222
 223        pbias_lite = readl(&t2_base->pbias_lite);
 224        pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
 225#ifdef CONFIG_TARGET_OMAP3_CAIRO
 226        /* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */
 227        pbias_lite &= ~PBIASLITEVMODE0;
 228#endif
 229#ifdef CONFIG_TARGET_OMAP3_LOGIC
 230        /* For Logic PD board, 1.8V bias to go enable gpio127 for mmc_cd */
 231        pbias_lite &= ~PBIASLITEVMODE1;
 232#endif
 233#ifdef CONFIG_MMC_OMAP36XX_PINS
 234        if (get_cpu_family() == CPU_OMAP36XX) {
 235                /* Disable extended drain IO before changing PBIAS */
 236                wkup_ctrl &= ~OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ;
 237                writel(wkup_ctrl, OMAP34XX_CTRL_WKUP_CTRL);
 238        }
 239#endif
 240        writel(pbias_lite, &t2_base->pbias_lite);
 241
 242        writel(pbias_lite | PBIASLITEPWRDNZ1 |
 243                PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
 244                &t2_base->pbias_lite);
 245
 246#ifdef CONFIG_MMC_OMAP36XX_PINS
 247        if (get_cpu_family() == CPU_OMAP36XX)
 248                /* Enable extended drain IO after changing PBIAS */
 249                writel(wkup_ctrl |
 250                                OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
 251                                OMAP34XX_CTRL_WKUP_CTRL);
 252#endif
 253        writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
 254                &t2_base->devconf0);
 255
 256        writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
 257                &t2_base->devconf1);
 258
 259        /* Change from default of 52MHz to 26MHz if necessary */
 260        if (!(cfg->host_caps & MMC_MODE_HS_52MHz))
 261                writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
 262                        &t2_base->ctl_prog_io1);
 263
 264        writel(readl(&prcm_base->fclken1_core) |
 265                EN_MMC1 | EN_MMC2 | EN_MMC3,
 266                &prcm_base->fclken1_core);
 267
 268        writel(readl(&prcm_base->iclken1_core) |
 269                EN_MMC1 | EN_MMC2 | EN_MMC3,
 270                &prcm_base->iclken1_core);
 271#endif
 272
 273#if (defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)) &&\
 274        !CONFIG_IS_ENABLED(DM_REGULATOR)
 275        /* PBIAS config needed for MMC1 only */
 276        if (mmc_get_blk_desc(mmc)->devnum == 0)
 277                vmmc_pbias_config(LDO_VOLT_3V3);
 278#endif
 279
 280        return 0;
 281}
 282
 283void mmc_init_stream(struct hsmmc *mmc_base)
 284{
 285        ulong start;
 286
 287        writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
 288
 289        writel(MMC_CMD0, &mmc_base->cmd);
 290        start = get_timer(0);
 291        while (!(readl(&mmc_base->stat) & CC_MASK)) {
 292                if (get_timer(0) - start > MAX_RETRY_MS) {
 293                        printf("%s: timedout waiting for cc!\n", __func__);
 294                        return;
 295                }
 296        }
 297        writel(CC_MASK, &mmc_base->stat)
 298                ;
 299        writel(MMC_CMD0, &mmc_base->cmd)
 300                ;
 301        start = get_timer(0);
 302        while (!(readl(&mmc_base->stat) & CC_MASK)) {
 303                if (get_timer(0) - start > MAX_RETRY_MS) {
 304                        printf("%s: timedout waiting for cc2!\n", __func__);
 305                        return;
 306                }
 307        }
 308        writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
 309}
 310
 311#if CONFIG_IS_ENABLED(DM_MMC)
 312#ifdef CONFIG_IODELAY_RECALIBRATION
 313static void omap_hsmmc_io_recalibrate(struct mmc *mmc)
 314{
 315        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 316        struct omap_hsmmc_pinctrl_state *pinctrl_state;
 317
 318        switch (priv->mode) {
 319        case MMC_HS_200:
 320                pinctrl_state = priv->hs200_1_8v_pinctrl_state;
 321                break;
 322        case UHS_SDR104:
 323                pinctrl_state = priv->sdr104_pinctrl_state;
 324                break;
 325        case UHS_SDR50:
 326                pinctrl_state = priv->sdr50_pinctrl_state;
 327                break;
 328        case UHS_DDR50:
 329                pinctrl_state = priv->ddr50_pinctrl_state;
 330                break;
 331        case UHS_SDR25:
 332                pinctrl_state = priv->sdr25_pinctrl_state;
 333                break;
 334        case UHS_SDR12:
 335                pinctrl_state = priv->sdr12_pinctrl_state;
 336                break;
 337        case SD_HS:
 338        case MMC_HS:
 339        case MMC_HS_52:
 340                pinctrl_state = priv->hs_pinctrl_state;
 341                break;
 342        case MMC_DDR_52:
 343                pinctrl_state = priv->ddr_1_8v_pinctrl_state;
 344        default:
 345                pinctrl_state = priv->default_pinctrl_state;
 346                break;
 347        }
 348
 349        if (!pinctrl_state)
 350                pinctrl_state = priv->default_pinctrl_state;
 351
 352        if (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY) {
 353                if (pinctrl_state->iodelay)
 354                        late_recalibrate_iodelay(pinctrl_state->padconf,
 355                                                 pinctrl_state->npads,
 356                                                 pinctrl_state->iodelay,
 357                                                 pinctrl_state->niodelays);
 358                else
 359                        do_set_mux32((*ctrl)->control_padconf_core_base,
 360                                     pinctrl_state->padconf,
 361                                     pinctrl_state->npads);
 362        }
 363}
 364#endif
 365static void omap_hsmmc_set_timing(struct mmc *mmc)
 366{
 367        u32 val;
 368        struct hsmmc *mmc_base;
 369        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 370
 371        mmc_base = priv->base_addr;
 372
 373        omap_hsmmc_stop_clock(mmc_base);
 374        val = readl(&mmc_base->ac12);
 375        val &= ~AC12_UHSMC_MASK;
 376        priv->mode = mmc->selected_mode;
 377
 378        if (mmc_is_mode_ddr(priv->mode))
 379                writel(readl(&mmc_base->con) | DDR, &mmc_base->con);
 380        else
 381                writel(readl(&mmc_base->con) & ~DDR, &mmc_base->con);
 382
 383        switch (priv->mode) {
 384        case MMC_HS_200:
 385        case UHS_SDR104:
 386                val |= AC12_UHSMC_SDR104;
 387                break;
 388        case UHS_SDR50:
 389                val |= AC12_UHSMC_SDR50;
 390                break;
 391        case MMC_DDR_52:
 392        case UHS_DDR50:
 393                val |= AC12_UHSMC_DDR50;
 394                break;
 395        case SD_HS:
 396        case MMC_HS_52:
 397        case UHS_SDR25:
 398                val |= AC12_UHSMC_SDR25;
 399                break;
 400        case MMC_LEGACY:
 401        case MMC_HS:
 402        case UHS_SDR12:
 403                val |= AC12_UHSMC_SDR12;
 404                break;
 405        default:
 406                val |= AC12_UHSMC_RES;
 407                break;
 408        }
 409        writel(val, &mmc_base->ac12);
 410
 411#ifdef CONFIG_IODELAY_RECALIBRATION
 412        omap_hsmmc_io_recalibrate(mmc);
 413#endif
 414        omap_hsmmc_start_clock(mmc_base);
 415}
 416
 417static void omap_hsmmc_conf_bus_power(struct mmc *mmc, uint signal_voltage)
 418{
 419        struct hsmmc *mmc_base;
 420        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 421        u32 hctl, ac12;
 422
 423        mmc_base = priv->base_addr;
 424
 425        hctl = readl(&mmc_base->hctl) & ~SDVS_MASK;
 426        ac12 = readl(&mmc_base->ac12) & ~AC12_V1V8_SIGEN;
 427
 428        switch (signal_voltage) {
 429        case MMC_SIGNAL_VOLTAGE_330:
 430                hctl |= SDVS_3V3;
 431                break;
 432        case MMC_SIGNAL_VOLTAGE_180:
 433                hctl |= SDVS_1V8;
 434                ac12 |= AC12_V1V8_SIGEN;
 435                break;
 436        }
 437
 438        writel(hctl, &mmc_base->hctl);
 439        writel(ac12, &mmc_base->ac12);
 440}
 441
 442static int omap_hsmmc_wait_dat0(struct udevice *dev, int state, int timeout_us)
 443{
 444        int ret = -ETIMEDOUT;
 445        u32 con;
 446        bool dat0_high;
 447        bool target_dat0_high = !!state;
 448        struct omap_hsmmc_data *priv = dev_get_priv(dev);
 449        struct hsmmc *mmc_base = priv->base_addr;
 450
 451        con = readl(&mmc_base->con);
 452        writel(con | CON_CLKEXTFREE | CON_PADEN, &mmc_base->con);
 453
 454        timeout_us = DIV_ROUND_UP(timeout_us, 10); /* check every 10 us. */
 455        while (timeout_us--) {
 456                dat0_high = !!(readl(&mmc_base->pstate) & PSTATE_DLEV_DAT0);
 457                if (dat0_high == target_dat0_high) {
 458                        ret = 0;
 459                        break;
 460                }
 461                udelay(10);
 462        }
 463        writel(con, &mmc_base->con);
 464
 465        return ret;
 466}
 467
 468#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
 469#if CONFIG_IS_ENABLED(DM_REGULATOR)
 470static int omap_hsmmc_set_io_regulator(struct mmc *mmc, int mV)
 471{
 472        int ret = 0;
 473        int uV = mV * 1000;
 474
 475        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 476
 477        if (!mmc->vqmmc_supply)
 478                return 0;
 479
 480        /* Disable PBIAS */
 481        ret = regulator_set_enable_if_allowed(priv->pbias_supply, false);
 482        if (ret)
 483                return ret;
 484
 485        /* Turn off IO voltage */
 486        ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, false);
 487        if (ret)
 488                return ret;
 489        /* Program a new IO voltage value */
 490        ret = regulator_set_value(mmc->vqmmc_supply, uV);
 491        if (ret)
 492                return ret;
 493        /* Turn on IO voltage */
 494        ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, true);
 495        if (ret)
 496                return ret;
 497
 498        /* Program PBIAS voltage*/
 499        ret = regulator_set_value(priv->pbias_supply, uV);
 500        if (ret && ret != -ENOSYS)
 501                return ret;
 502        /* Enable PBIAS */
 503        ret = regulator_set_enable_if_allowed(priv->pbias_supply, true);
 504        if (ret)
 505                return ret;
 506
 507        return 0;
 508}
 509#endif
 510
 511static int omap_hsmmc_set_signal_voltage(struct mmc *mmc)
 512{
 513        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 514        struct hsmmc *mmc_base = priv->base_addr;
 515        int mv = mmc_voltage_to_mv(mmc->signal_voltage);
 516        u32 capa_mask;
 517        __maybe_unused u8 palmas_ldo_volt;
 518        u32 val;
 519
 520        if (mv < 0)
 521                return -EINVAL;
 522
 523        if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
 524                mv = 3300;
 525                capa_mask = VS33_3V3SUP;
 526                palmas_ldo_volt = LDO_VOLT_3V3;
 527        } else if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) {
 528                capa_mask = VS18_1V8SUP;
 529                palmas_ldo_volt = LDO_VOLT_1V8;
 530        } else {
 531                return -EOPNOTSUPP;
 532        }
 533
 534        val = readl(&mmc_base->capa);
 535        if (!(val & capa_mask))
 536                return -EOPNOTSUPP;
 537
 538        priv->signal_voltage = mmc->signal_voltage;
 539
 540        omap_hsmmc_conf_bus_power(mmc, mmc->signal_voltage);
 541
 542#if CONFIG_IS_ENABLED(DM_REGULATOR)
 543        return omap_hsmmc_set_io_regulator(mmc, mv);
 544#elif (defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)) && \
 545        defined(CONFIG_PALMAS_POWER)
 546        if (mmc_get_blk_desc(mmc)->devnum == 0)
 547                vmmc_pbias_config(palmas_ldo_volt);
 548        return 0;
 549#else
 550        return 0;
 551#endif
 552}
 553#endif
 554
 555static uint32_t omap_hsmmc_set_capabilities(struct mmc *mmc)
 556{
 557        struct hsmmc *mmc_base;
 558        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 559        u32 val;
 560
 561        mmc_base = priv->base_addr;
 562        val = readl(&mmc_base->capa);
 563
 564        if (priv->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) {
 565                val |= (VS33_3V3SUP | VS18_1V8SUP);
 566        } else if (priv->controller_flags & OMAP_HSMMC_NO_1_8_V) {
 567                val |= VS33_3V3SUP;
 568                val &= ~VS18_1V8SUP;
 569        } else {
 570                val |= VS18_1V8SUP;
 571                val &= ~VS33_3V3SUP;
 572        }
 573
 574        writel(val, &mmc_base->capa);
 575
 576        return val;
 577}
 578
 579#ifdef MMC_SUPPORTS_TUNING
 580static void omap_hsmmc_disable_tuning(struct mmc *mmc)
 581{
 582        struct hsmmc *mmc_base;
 583        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 584        u32 val;
 585
 586        mmc_base = priv->base_addr;
 587        val = readl(&mmc_base->ac12);
 588        val &= ~(AC12_SCLK_SEL);
 589        writel(val, &mmc_base->ac12);
 590
 591        val = readl(&mmc_base->dll);
 592        val &= ~(DLL_FORCE_VALUE | DLL_SWT);
 593        writel(val, &mmc_base->dll);
 594}
 595
 596static void omap_hsmmc_set_dll(struct mmc *mmc, int count)
 597{
 598        int i;
 599        struct hsmmc *mmc_base;
 600        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 601        u32 val;
 602
 603        mmc_base = priv->base_addr;
 604        val = readl(&mmc_base->dll);
 605        val |= DLL_FORCE_VALUE;
 606        val &= ~(DLL_FORCE_SR_C_MASK << DLL_FORCE_SR_C_SHIFT);
 607        val |= (count << DLL_FORCE_SR_C_SHIFT);
 608        writel(val, &mmc_base->dll);
 609
 610        val |= DLL_CALIB;
 611        writel(val, &mmc_base->dll);
 612        for (i = 0; i < 1000; i++) {
 613                if (readl(&mmc_base->dll) & DLL_CALIB)
 614                        break;
 615        }
 616        val &= ~DLL_CALIB;
 617        writel(val, &mmc_base->dll);
 618}
 619
 620static int omap_hsmmc_execute_tuning(struct udevice *dev, uint opcode)
 621{
 622        struct omap_hsmmc_data *priv = dev_get_priv(dev);
 623        struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
 624        struct mmc *mmc = upriv->mmc;
 625        struct hsmmc *mmc_base;
 626        u32 val;
 627        u8 cur_match, prev_match = 0;
 628        int ret;
 629        u32 phase_delay = 0;
 630        u32 start_window = 0, max_window = 0;
 631        u32 length = 0, max_len = 0;
 632        bool single_point_failure = false;
 633        struct udevice *thermal_dev;
 634        int temperature;
 635        int i;
 636
 637        mmc_base = priv->base_addr;
 638        val = readl(&mmc_base->capa2);
 639
 640        /* clock tuning is not needed for upto 52MHz */
 641        if (!((mmc->selected_mode == MMC_HS_200) ||
 642              (mmc->selected_mode == UHS_SDR104) ||
 643              ((mmc->selected_mode == UHS_SDR50) && (val & CAPA2_TSDR50))))
 644                return 0;
 645
 646        ret = uclass_first_device(UCLASS_THERMAL, &thermal_dev);
 647        if (ret) {
 648                printf("Couldn't get thermal device for tuning\n");
 649                return ret;
 650        }
 651        ret = thermal_get_temp(thermal_dev, &temperature);
 652        if (ret) {
 653                printf("Couldn't get temperature for tuning\n");
 654                return ret;
 655        }
 656        val = readl(&mmc_base->dll);
 657        val |= DLL_SWT;
 658        writel(val, &mmc_base->dll);
 659
 660        /*
 661         * Stage 1: Search for a maximum pass window ignoring any
 662         * any single point failures. If the tuning value ends up
 663         * near it, move away from it in stage 2 below
 664         */
 665        while (phase_delay <= MAX_PHASE_DELAY) {
 666                omap_hsmmc_set_dll(mmc, phase_delay);
 667
 668                cur_match = !mmc_send_tuning(mmc, opcode, NULL);
 669
 670                if (cur_match) {
 671                        if (prev_match) {
 672                                length++;
 673                        } else if (single_point_failure) {
 674                                /* ignore single point failure */
 675                                length++;
 676                                single_point_failure = false;
 677                        } else {
 678                                start_window = phase_delay;
 679                                length = 1;
 680                        }
 681                } else {
 682                        single_point_failure = prev_match;
 683                }
 684
 685                if (length > max_len) {
 686                        max_window = start_window;
 687                        max_len = length;
 688                }
 689
 690                prev_match = cur_match;
 691                phase_delay += 4;
 692        }
 693
 694        if (!max_len) {
 695                ret = -EIO;
 696                goto tuning_error;
 697        }
 698
 699        val = readl(&mmc_base->ac12);
 700        if (!(val & AC12_SCLK_SEL)) {
 701                ret = -EIO;
 702                goto tuning_error;
 703        }
 704        /*
 705         * Assign tuning value as a ratio of maximum pass window based
 706         * on temperature
 707         */
 708        if (temperature < -20000)
 709                phase_delay = min(max_window + 4 * max_len - 24,
 710                                  max_window +
 711                                  DIV_ROUND_UP(13 * max_len, 16) * 4);
 712        else if (temperature < 20000)
 713                phase_delay = max_window + DIV_ROUND_UP(9 * max_len, 16) * 4;
 714        else if (temperature < 40000)
 715                phase_delay = max_window + DIV_ROUND_UP(8 * max_len, 16) * 4;
 716        else if (temperature < 70000)
 717                phase_delay = max_window + DIV_ROUND_UP(7 * max_len, 16) * 4;
 718        else if (temperature < 90000)
 719                phase_delay = max_window + DIV_ROUND_UP(5 * max_len, 16) * 4;
 720        else if (temperature < 120000)
 721                phase_delay = max_window + DIV_ROUND_UP(4 * max_len, 16) * 4;
 722        else
 723                phase_delay = max_window + DIV_ROUND_UP(3 * max_len, 16) * 4;
 724
 725        /*
 726         * Stage 2: Search for a single point failure near the chosen tuning
 727         * value in two steps. First in the +3 to +10 range and then in the
 728         * +2 to -10 range. If found, move away from it in the appropriate
 729         * direction by the appropriate amount depending on the temperature.
 730         */
 731        for (i = 3; i <= 10; i++) {
 732                omap_hsmmc_set_dll(mmc, phase_delay + i);
 733                if (mmc_send_tuning(mmc, opcode, NULL)) {
 734                        if (temperature < 10000)
 735                                phase_delay += i + 6;
 736                        else if (temperature < 20000)
 737                                phase_delay += i - 12;
 738                        else if (temperature < 70000)
 739                                phase_delay += i - 8;
 740                        else if (temperature < 90000)
 741                                phase_delay += i - 6;
 742                        else
 743                                phase_delay += i - 6;
 744
 745                        goto single_failure_found;
 746                }
 747        }
 748
 749        for (i = 2; i >= -10; i--) {
 750                omap_hsmmc_set_dll(mmc, phase_delay + i);
 751                if (mmc_send_tuning(mmc, opcode, NULL)) {
 752                        if (temperature < 10000)
 753                                phase_delay += i + 12;
 754                        else if (temperature < 20000)
 755                                phase_delay += i + 8;
 756                        else if (temperature < 70000)
 757                                phase_delay += i + 8;
 758                        else if (temperature < 90000)
 759                                phase_delay += i + 10;
 760                        else
 761                                phase_delay += i + 12;
 762
 763                        goto single_failure_found;
 764                }
 765        }
 766
 767single_failure_found:
 768
 769        omap_hsmmc_set_dll(mmc, phase_delay);
 770
 771        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
 772        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
 773
 774        return 0;
 775
 776tuning_error:
 777
 778        omap_hsmmc_disable_tuning(mmc);
 779        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
 780        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
 781
 782        return ret;
 783}
 784#endif
 785#endif
 786
 787static void mmc_enable_irq(struct mmc *mmc, struct mmc_cmd *cmd)
 788{
 789        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 790        struct hsmmc *mmc_base = priv->base_addr;
 791        u32 irq_mask = INT_EN_MASK;
 792
 793        /*
 794         * TODO: Errata i802 indicates only DCRC interrupts can occur during
 795         * tuning procedure and DCRC should be disabled. But see occurences
 796         * of DEB, CIE, CEB, CCRC interupts during tuning procedure. These
 797         * interrupts occur along with BRR, so the data is actually in the
 798         * buffer. It has to be debugged why these interrutps occur
 799         */
 800        if (cmd && mmc_is_tuning_cmd(cmd->cmdidx))
 801                irq_mask &= ~(IE_DEB | IE_DCRC | IE_CIE | IE_CEB | IE_CCRC);
 802
 803        writel(irq_mask, &mmc_base->ie);
 804}
 805
 806static int omap_hsmmc_init_setup(struct mmc *mmc)
 807{
 808        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 809        struct hsmmc *mmc_base;
 810        unsigned int reg_val;
 811        unsigned int dsor;
 812        ulong start;
 813
 814        mmc_base = priv->base_addr;
 815        mmc_board_init(mmc);
 816
 817        writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
 818                &mmc_base->sysconfig);
 819        start = get_timer(0);
 820        while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
 821                if (get_timer(0) - start > MAX_RETRY_MS) {
 822                        printf("%s: timedout waiting for cc2!\n", __func__);
 823                        return -ETIMEDOUT;
 824                }
 825        }
 826        writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
 827        start = get_timer(0);
 828        while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
 829                if (get_timer(0) - start > MAX_RETRY_MS) {
 830                        printf("%s: timedout waiting for softresetall!\n",
 831                                __func__);
 832                        return -ETIMEDOUT;
 833                }
 834        }
 835#ifdef CONFIG_MMC_OMAP_HS_ADMA
 836        reg_val = readl(&mmc_base->hl_hwinfo);
 837        if (reg_val & MADMA_EN)
 838                priv->controller_flags |= OMAP_HSMMC_USE_ADMA;
 839#endif
 840
 841#if CONFIG_IS_ENABLED(DM_MMC)
 842        reg_val = omap_hsmmc_set_capabilities(mmc);
 843        omap_hsmmc_conf_bus_power(mmc, (reg_val & VS33_3V3SUP) ?
 844                          MMC_SIGNAL_VOLTAGE_330 : MMC_SIGNAL_VOLTAGE_180);
 845#else
 846        writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V3, &mmc_base->hctl);
 847        writel(readl(&mmc_base->capa) | VS33_3V3SUP | VS18_1V8SUP,
 848                &mmc_base->capa);
 849#endif
 850
 851        reg_val = readl(&mmc_base->con) & RESERVED_MASK;
 852
 853        writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
 854                MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
 855                HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
 856
 857        dsor = 240;
 858        mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
 859                (ICE_STOP | DTO_15THDTO));
 860        mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
 861                (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
 862        start = get_timer(0);
 863        while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
 864                if (get_timer(0) - start > MAX_RETRY_MS) {
 865                        printf("%s: timedout waiting for ics!\n", __func__);
 866                        return -ETIMEDOUT;
 867                }
 868        }
 869        writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
 870
 871        writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
 872
 873        mmc_enable_irq(mmc, NULL);
 874
 875#if !CONFIG_IS_ENABLED(DM_MMC)
 876        mmc_init_stream(mmc_base);
 877#endif
 878
 879        return 0;
 880}
 881
 882/*
 883 * MMC controller internal finite state machine reset
 884 *
 885 * Used to reset command or data internal state machines, using respectively
 886 * SRC or SRD bit of SYSCTL register
 887 */
 888static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
 889{
 890        ulong start;
 891
 892        mmc_reg_out(&mmc_base->sysctl, bit, bit);
 893
 894        /*
 895         * CMD(DAT) lines reset procedures are slightly different
 896         * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx).
 897         * According to OMAP3 TRM:
 898         * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it
 899         * returns to 0x0.
 900         * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset
 901         * procedure steps must be as follows:
 902         * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in
 903         *    MMCHS_SYSCTL register (SD_SYSCTL for AM335x).
 904         * 2. Poll the SRC(SRD) bit until it is set to 0x1.
 905         * 3. Wait until the SRC (SRD) bit returns to 0x0
 906         *    (reset procedure is completed).
 907         */
 908#if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
 909        defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX)
 910        if (!(readl(&mmc_base->sysctl) & bit)) {
 911                start = get_timer(0);
 912                while (!(readl(&mmc_base->sysctl) & bit)) {
 913                        if (get_timer(0) - start > MMC_TIMEOUT_MS)
 914                                return;
 915                }
 916        }
 917#endif
 918        start = get_timer(0);
 919        while ((readl(&mmc_base->sysctl) & bit) != 0) {
 920                if (get_timer(0) - start > MAX_RETRY_MS) {
 921                        printf("%s: timedout waiting for sysctl %x to clear\n",
 922                                __func__, bit);
 923                        return;
 924                }
 925        }
 926}
 927
 928#ifdef CONFIG_MMC_OMAP_HS_ADMA
 929static void omap_hsmmc_adma_desc(struct mmc *mmc, char *buf, u16 len, bool end)
 930{
 931        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 932        struct omap_hsmmc_adma_desc *desc;
 933        u8 attr;
 934
 935        desc = &priv->adma_desc_table[priv->desc_slot];
 936
 937        attr = ADMA_DESC_ATTR_VALID | ADMA_DESC_TRANSFER_DATA;
 938        if (!end)
 939                priv->desc_slot++;
 940        else
 941                attr |= ADMA_DESC_ATTR_END;
 942
 943        desc->len = len;
 944        desc->addr = (u32)buf;
 945        desc->reserved = 0;
 946        desc->attr = attr;
 947}
 948
 949static void omap_hsmmc_prepare_adma_table(struct mmc *mmc,
 950                                          struct mmc_data *data)
 951{
 952        uint total_len = data->blocksize * data->blocks;
 953        uint desc_count = DIV_ROUND_UP(total_len, ADMA_MAX_LEN);
 954        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 955        int i = desc_count;
 956        char *buf;
 957
 958        priv->desc_slot = 0;
 959        priv->adma_desc_table = (struct omap_hsmmc_adma_desc *)
 960                                memalign(ARCH_DMA_MINALIGN, desc_count *
 961                                sizeof(struct omap_hsmmc_adma_desc));
 962
 963        if (data->flags & MMC_DATA_READ)
 964                buf = data->dest;
 965        else
 966                buf = (char *)data->src;
 967
 968        while (--i) {
 969                omap_hsmmc_adma_desc(mmc, buf, ADMA_MAX_LEN, false);
 970                buf += ADMA_MAX_LEN;
 971                total_len -= ADMA_MAX_LEN;
 972        }
 973
 974        omap_hsmmc_adma_desc(mmc, buf, total_len, true);
 975
 976        flush_dcache_range((long)priv->adma_desc_table,
 977                           (long)priv->adma_desc_table +
 978                           ROUND(desc_count *
 979                           sizeof(struct omap_hsmmc_adma_desc),
 980                           ARCH_DMA_MINALIGN));
 981}
 982
 983static void omap_hsmmc_prepare_data(struct mmc *mmc, struct mmc_data *data)
 984{
 985        struct hsmmc *mmc_base;
 986        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
 987        u32 val;
 988        char *buf;
 989
 990        mmc_base = priv->base_addr;
 991        omap_hsmmc_prepare_adma_table(mmc, data);
 992
 993        if (data->flags & MMC_DATA_READ)
 994                buf = data->dest;
 995        else
 996                buf = (char *)data->src;
 997
 998        val = readl(&mmc_base->hctl);
 999        val |= DMA_SELECT;
1000        writel(val, &mmc_base->hctl);
1001
1002        val = readl(&mmc_base->con);
1003        val |= DMA_MASTER;
1004        writel(val, &mmc_base->con);
1005
1006        writel((u32)priv->adma_desc_table, &mmc_base->admasal);
1007
1008        flush_dcache_range((u32)buf,
1009                           (u32)buf +
1010                           ROUND(data->blocksize * data->blocks,
1011                                 ARCH_DMA_MINALIGN));
1012}
1013
1014static void omap_hsmmc_dma_cleanup(struct mmc *mmc)
1015{
1016        struct hsmmc *mmc_base;
1017        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1018        u32 val;
1019
1020        mmc_base = priv->base_addr;
1021
1022        val = readl(&mmc_base->con);
1023        val &= ~DMA_MASTER;
1024        writel(val, &mmc_base->con);
1025
1026        val = readl(&mmc_base->hctl);
1027        val &= ~DMA_SELECT;
1028        writel(val, &mmc_base->hctl);
1029
1030        kfree(priv->adma_desc_table);
1031}
1032#else
1033#define omap_hsmmc_adma_desc
1034#define omap_hsmmc_prepare_adma_table
1035#define omap_hsmmc_prepare_data
1036#define omap_hsmmc_dma_cleanup
1037#endif
1038
1039#if !CONFIG_IS_ENABLED(DM_MMC)
1040static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
1041                        struct mmc_data *data)
1042{
1043        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1044#else
1045static int omap_hsmmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
1046                        struct mmc_data *data)
1047{
1048        struct omap_hsmmc_data *priv = dev_get_priv(dev);
1049        struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1050        struct mmc *mmc = upriv->mmc;
1051#endif
1052        struct hsmmc *mmc_base;
1053        unsigned int flags, mmc_stat;
1054        ulong start;
1055        priv->last_cmd = cmd->cmdidx;
1056
1057        mmc_base = priv->base_addr;
1058
1059        if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
1060                return 0;
1061
1062        start = get_timer(0);
1063        while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
1064                if (get_timer(0) - start > MAX_RETRY_MS) {
1065                        printf("%s: timedout waiting on cmd inhibit to clear\n",
1066                                        __func__);
1067                        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1068                        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
1069                        return -ETIMEDOUT;
1070                }
1071        }
1072        writel(0xFFFFFFFF, &mmc_base->stat);
1073        if (readl(&mmc_base->stat)) {
1074                mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1075                mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
1076        }
1077
1078        /*
1079         * CMDREG
1080         * CMDIDX[13:8] : Command index
1081         * DATAPRNT[5]  : Data Present Select
1082         * ENCMDIDX[4]  : Command Index Check Enable
1083         * ENCMDCRC[3]  : Command CRC Check Enable
1084         * RSPTYP[1:0]
1085         *      00 = No Response
1086         *      01 = Length 136
1087         *      10 = Length 48
1088         *      11 = Length 48 Check busy after response
1089         */
1090        /* Delay added before checking the status of frq change
1091         * retry not supported by mmc.c(core file)
1092         */
1093        if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
1094                udelay(50000); /* wait 50 ms */
1095
1096        if (!(cmd->resp_type & MMC_RSP_PRESENT))
1097                flags = 0;
1098        else if (cmd->resp_type & MMC_RSP_136)
1099                flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
1100        else if (cmd->resp_type & MMC_RSP_BUSY)
1101                flags = RSP_TYPE_LGHT48B;
1102        else
1103                flags = RSP_TYPE_LGHT48;
1104
1105        /* enable default flags */
1106        flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
1107                        MSBS_SGLEBLK);
1108        flags &= ~(ACEN_ENABLE | BCE_ENABLE | DE_ENABLE);
1109
1110        if (cmd->resp_type & MMC_RSP_CRC)
1111                flags |= CCCE_CHECK;
1112        if (cmd->resp_type & MMC_RSP_OPCODE)
1113                flags |= CICE_CHECK;
1114
1115        if (data) {
1116                if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
1117                         (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
1118                        flags |= (MSBS_MULTIBLK | BCE_ENABLE | ACEN_ENABLE);
1119                        data->blocksize = 512;
1120                        writel(data->blocksize | (data->blocks << 16),
1121                                                        &mmc_base->blk);
1122                } else
1123                        writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
1124
1125                if (data->flags & MMC_DATA_READ)
1126                        flags |= (DP_DATA | DDIR_READ);
1127                else
1128                        flags |= (DP_DATA | DDIR_WRITE);
1129
1130#ifdef CONFIG_MMC_OMAP_HS_ADMA
1131                if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) &&
1132                    !mmc_is_tuning_cmd(cmd->cmdidx)) {
1133                        omap_hsmmc_prepare_data(mmc, data);
1134                        flags |= DE_ENABLE;
1135                }
1136#endif
1137        }
1138
1139        mmc_enable_irq(mmc, cmd);
1140
1141        writel(cmd->cmdarg, &mmc_base->arg);
1142        udelay(20);             /* To fix "No status update" error on eMMC */
1143        writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
1144
1145        start = get_timer(0);
1146        do {
1147                mmc_stat = readl(&mmc_base->stat);
1148                if (get_timer(start) > MAX_RETRY_MS) {
1149                        printf("%s : timeout: No status update\n", __func__);
1150                        return -ETIMEDOUT;
1151                }
1152        } while (!mmc_stat);
1153
1154        if ((mmc_stat & IE_CTO) != 0) {
1155                mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
1156                return -ETIMEDOUT;
1157        } else if ((mmc_stat & ERRI_MASK) != 0)
1158                return -1;
1159
1160        if (mmc_stat & CC_MASK) {
1161                writel(CC_MASK, &mmc_base->stat);
1162                if (cmd->resp_type & MMC_RSP_PRESENT) {
1163                        if (cmd->resp_type & MMC_RSP_136) {
1164                                /* response type 2 */
1165                                cmd->response[3] = readl(&mmc_base->rsp10);
1166                                cmd->response[2] = readl(&mmc_base->rsp32);
1167                                cmd->response[1] = readl(&mmc_base->rsp54);
1168                                cmd->response[0] = readl(&mmc_base->rsp76);
1169                        } else
1170                                /* response types 1, 1b, 3, 4, 5, 6 */
1171                                cmd->response[0] = readl(&mmc_base->rsp10);
1172                }
1173        }
1174
1175#ifdef CONFIG_MMC_OMAP_HS_ADMA
1176        if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) && data &&
1177            !mmc_is_tuning_cmd(cmd->cmdidx)) {
1178                u32 sz_mb, timeout;
1179
1180                if (mmc_stat & IE_ADMAE) {
1181                        omap_hsmmc_dma_cleanup(mmc);
1182                        return -EIO;
1183                }
1184
1185                sz_mb = DIV_ROUND_UP(data->blocksize *  data->blocks, 1 << 20);
1186                timeout = sz_mb * DMA_TIMEOUT_PER_MB;
1187                if (timeout < MAX_RETRY_MS)
1188                        timeout = MAX_RETRY_MS;
1189
1190                start = get_timer(0);
1191                do {
1192                        mmc_stat = readl(&mmc_base->stat);
1193                        if (mmc_stat & TC_MASK) {
1194                                writel(readl(&mmc_base->stat) | TC_MASK,
1195                                       &mmc_base->stat);
1196                                break;
1197                        }
1198                        if (get_timer(start) > timeout) {
1199                                printf("%s : DMA timeout: No status update\n",
1200                                       __func__);
1201                                return -ETIMEDOUT;
1202                        }
1203                } while (1);
1204
1205                omap_hsmmc_dma_cleanup(mmc);
1206                return 0;
1207        }
1208#endif
1209
1210        if (data && (data->flags & MMC_DATA_READ)) {
1211                mmc_read_data(mmc_base, data->dest,
1212                                data->blocksize * data->blocks);
1213        } else if (data && (data->flags & MMC_DATA_WRITE)) {
1214                mmc_write_data(mmc_base, data->src,
1215                                data->blocksize * data->blocks);
1216        }
1217        return 0;
1218}
1219
1220static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
1221{
1222        unsigned int *output_buf = (unsigned int *)buf;
1223        unsigned int mmc_stat;
1224        unsigned int count;
1225
1226        /*
1227         * Start Polled Read
1228         */
1229        count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
1230        count /= 4;
1231
1232        while (size) {
1233                ulong start = get_timer(0);
1234                do {
1235                        mmc_stat = readl(&mmc_base->stat);
1236                        if (get_timer(0) - start > MAX_RETRY_MS) {
1237                                printf("%s: timedout waiting for status!\n",
1238                                                __func__);
1239                                return -ETIMEDOUT;
1240                        }
1241                } while (mmc_stat == 0);
1242
1243                if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
1244                        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1245
1246                if ((mmc_stat & ERRI_MASK) != 0)
1247                        return 1;
1248
1249                if (mmc_stat & BRR_MASK) {
1250                        unsigned int k;
1251
1252                        writel(readl(&mmc_base->stat) | BRR_MASK,
1253                                &mmc_base->stat);
1254                        for (k = 0; k < count; k++) {
1255                                *output_buf = readl(&mmc_base->data);
1256                                output_buf++;
1257                        }
1258                        size -= (count*4);
1259                }
1260
1261                if (mmc_stat & BWR_MASK)
1262                        writel(readl(&mmc_base->stat) | BWR_MASK,
1263                                &mmc_base->stat);
1264
1265                if (mmc_stat & TC_MASK) {
1266                        writel(readl(&mmc_base->stat) | TC_MASK,
1267                                &mmc_base->stat);
1268                        break;
1269                }
1270        }
1271        return 0;
1272}
1273
1274#if CONFIG_IS_ENABLED(MMC_WRITE)
1275static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
1276                          unsigned int size)
1277{
1278        unsigned int *input_buf = (unsigned int *)buf;
1279        unsigned int mmc_stat;
1280        unsigned int count;
1281
1282        /*
1283         * Start Polled Write
1284         */
1285        count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
1286        count /= 4;
1287
1288        while (size) {
1289                ulong start = get_timer(0);
1290                do {
1291                        mmc_stat = readl(&mmc_base->stat);
1292                        if (get_timer(0) - start > MAX_RETRY_MS) {
1293                                printf("%s: timedout waiting for status!\n",
1294                                                __func__);
1295                                return -ETIMEDOUT;
1296                        }
1297                } while (mmc_stat == 0);
1298
1299                if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
1300                        mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1301
1302                if ((mmc_stat & ERRI_MASK) != 0)
1303                        return 1;
1304
1305                if (mmc_stat & BWR_MASK) {
1306                        unsigned int k;
1307
1308                        writel(readl(&mmc_base->stat) | BWR_MASK,
1309                                        &mmc_base->stat);
1310                        for (k = 0; k < count; k++) {
1311                                writel(*input_buf, &mmc_base->data);
1312                                input_buf++;
1313                        }
1314                        size -= (count*4);
1315                }
1316
1317                if (mmc_stat & BRR_MASK)
1318                        writel(readl(&mmc_base->stat) | BRR_MASK,
1319                                &mmc_base->stat);
1320
1321                if (mmc_stat & TC_MASK) {
1322                        writel(readl(&mmc_base->stat) | TC_MASK,
1323                                &mmc_base->stat);
1324                        break;
1325                }
1326        }
1327        return 0;
1328}
1329#else
1330static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
1331                          unsigned int size)
1332{
1333        return -ENOTSUPP;
1334}
1335#endif
1336static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base)
1337{
1338        writel(readl(&mmc_base->sysctl) & ~CEN_ENABLE, &mmc_base->sysctl);
1339}
1340
1341static void omap_hsmmc_start_clock(struct hsmmc *mmc_base)
1342{
1343        writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
1344}
1345
1346static void omap_hsmmc_set_clock(struct mmc *mmc)
1347{
1348        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1349        struct hsmmc *mmc_base;
1350        unsigned int dsor = 0;
1351        ulong start;
1352
1353        mmc_base = priv->base_addr;
1354        omap_hsmmc_stop_clock(mmc_base);
1355
1356        /* TODO: Is setting DTO required here? */
1357        mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK),
1358                    (ICE_STOP | DTO_15THDTO));
1359
1360        if (mmc->clock != 0) {
1361                dsor = DIV_ROUND_UP(MMC_CLOCK_REFERENCE * 1000000, mmc->clock);
1362                if (dsor > CLKD_MAX)
1363                        dsor = CLKD_MAX;
1364        } else {
1365                dsor = CLKD_MAX;
1366        }
1367
1368        mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
1369                    (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
1370
1371        start = get_timer(0);
1372        while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
1373                if (get_timer(0) - start > MAX_RETRY_MS) {
1374                        printf("%s: timedout waiting for ics!\n", __func__);
1375                        return;
1376                }
1377        }
1378
1379        priv->clock = MMC_CLOCK_REFERENCE * 1000000 / dsor;
1380        mmc->clock = priv->clock;
1381        omap_hsmmc_start_clock(mmc_base);
1382}
1383
1384static void omap_hsmmc_set_bus_width(struct mmc *mmc)
1385{
1386        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1387        struct hsmmc *mmc_base;
1388
1389        mmc_base = priv->base_addr;
1390        /* configue bus width */
1391        switch (mmc->bus_width) {
1392        case 8:
1393                writel(readl(&mmc_base->con) | DTW_8_BITMODE,
1394                        &mmc_base->con);
1395                break;
1396
1397        case 4:
1398                writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
1399                        &mmc_base->con);
1400                writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
1401                        &mmc_base->hctl);
1402                break;
1403
1404        case 1:
1405        default:
1406                writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
1407                        &mmc_base->con);
1408                writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
1409                        &mmc_base->hctl);
1410                break;
1411        }
1412
1413        priv->bus_width = mmc->bus_width;
1414}
1415
1416#if !CONFIG_IS_ENABLED(DM_MMC)
1417static int omap_hsmmc_set_ios(struct mmc *mmc)
1418{
1419        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1420#else
1421static int omap_hsmmc_set_ios(struct udevice *dev)
1422{
1423        struct omap_hsmmc_data *priv = dev_get_priv(dev);
1424        struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1425        struct mmc *mmc = upriv->mmc;
1426#endif
1427        struct hsmmc *mmc_base = priv->base_addr;
1428        int ret = 0;
1429
1430        if (priv->bus_width != mmc->bus_width)
1431                omap_hsmmc_set_bus_width(mmc);
1432
1433        if (priv->clock != mmc->clock)
1434                omap_hsmmc_set_clock(mmc);
1435
1436        if (mmc->clk_disable)
1437                omap_hsmmc_stop_clock(mmc_base);
1438        else
1439                omap_hsmmc_start_clock(mmc_base);
1440
1441#if CONFIG_IS_ENABLED(DM_MMC)
1442        if (priv->mode != mmc->selected_mode)
1443                omap_hsmmc_set_timing(mmc);
1444
1445#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
1446        if (priv->signal_voltage != mmc->signal_voltage)
1447                ret = omap_hsmmc_set_signal_voltage(mmc);
1448#endif
1449#endif
1450        return ret;
1451}
1452
1453#ifdef OMAP_HSMMC_USE_GPIO
1454#if CONFIG_IS_ENABLED(DM_MMC)
1455static int omap_hsmmc_getcd(struct udevice *dev)
1456{
1457        int value = -1;
1458#if CONFIG_IS_ENABLED(DM_GPIO)
1459        struct omap_hsmmc_data *priv = dev_get_priv(dev);
1460        value = dm_gpio_get_value(&priv->cd_gpio);
1461#endif
1462        /* if no CD return as 1 */
1463        if (value < 0)
1464                return 1;
1465
1466        return value;
1467}
1468
1469static int omap_hsmmc_getwp(struct udevice *dev)
1470{
1471        int value = 0;
1472#if CONFIG_IS_ENABLED(DM_GPIO)
1473        struct omap_hsmmc_data *priv = dev_get_priv(dev);
1474        value = dm_gpio_get_value(&priv->wp_gpio);
1475#endif
1476        /* if no WP return as 0 */
1477        if (value < 0)
1478                return 0;
1479        return value;
1480}
1481#else
1482static int omap_hsmmc_getcd(struct mmc *mmc)
1483{
1484        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1485        int cd_gpio;
1486
1487        /* if no CD return as 1 */
1488        cd_gpio = priv->cd_gpio;
1489        if (cd_gpio < 0)
1490                return 1;
1491
1492        /* NOTE: assumes card detect signal is active-low */
1493        return !gpio_get_value(cd_gpio);
1494}
1495
1496static int omap_hsmmc_getwp(struct mmc *mmc)
1497{
1498        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1499        int wp_gpio;
1500
1501        /* if no WP return as 0 */
1502        wp_gpio = priv->wp_gpio;
1503        if (wp_gpio < 0)
1504                return 0;
1505
1506        /* NOTE: assumes write protect signal is active-high */
1507        return gpio_get_value(wp_gpio);
1508}
1509#endif
1510#endif
1511
1512#if CONFIG_IS_ENABLED(DM_MMC)
1513static const struct dm_mmc_ops omap_hsmmc_ops = {
1514        .send_cmd       = omap_hsmmc_send_cmd,
1515        .set_ios        = omap_hsmmc_set_ios,
1516#ifdef OMAP_HSMMC_USE_GPIO
1517        .get_cd         = omap_hsmmc_getcd,
1518        .get_wp         = omap_hsmmc_getwp,
1519#endif
1520#ifdef MMC_SUPPORTS_TUNING
1521        .execute_tuning = omap_hsmmc_execute_tuning,
1522#endif
1523        .wait_dat0      = omap_hsmmc_wait_dat0,
1524};
1525#else
1526static const struct mmc_ops omap_hsmmc_ops = {
1527        .send_cmd       = omap_hsmmc_send_cmd,
1528        .set_ios        = omap_hsmmc_set_ios,
1529        .init           = omap_hsmmc_init_setup,
1530#ifdef OMAP_HSMMC_USE_GPIO
1531        .getcd          = omap_hsmmc_getcd,
1532        .getwp          = omap_hsmmc_getwp,
1533#endif
1534};
1535#endif
1536
1537#if !CONFIG_IS_ENABLED(DM_MMC)
1538int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
1539                int wp_gpio)
1540{
1541        struct mmc *mmc;
1542        struct omap_hsmmc_data *priv;
1543        struct mmc_config *cfg;
1544        uint host_caps_val;
1545
1546        priv = calloc(1, sizeof(*priv));
1547        if (priv == NULL)
1548                return -1;
1549
1550        host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS;
1551
1552        switch (dev_index) {
1553        case 0:
1554                priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
1555                break;
1556#ifdef OMAP_HSMMC2_BASE
1557        case 1:
1558                priv->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
1559#if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
1560        defined(CONFIG_DRA7XX) || defined(CONFIG_AM33XX) || \
1561        defined(CONFIG_AM43XX) || defined(CONFIG_SOC_KEYSTONE)) && \
1562                defined(CONFIG_HSMMC2_8BIT)
1563                /* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */
1564                host_caps_val |= MMC_MODE_8BIT;
1565#endif
1566                break;
1567#endif
1568#ifdef OMAP_HSMMC3_BASE
1569        case 2:
1570                priv->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
1571#if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT)
1572                /* Enable 8-bit interface for eMMC on DRA7XX */
1573                host_caps_val |= MMC_MODE_8BIT;
1574#endif
1575                break;
1576#endif
1577        default:
1578                priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
1579                return 1;
1580        }
1581#ifdef OMAP_HSMMC_USE_GPIO
1582        /* on error gpio values are set to -1, which is what we want */
1583        priv->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd");
1584        priv->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp");
1585#endif
1586
1587        cfg = &priv->cfg;
1588
1589        cfg->name = "OMAP SD/MMC";
1590        cfg->ops = &omap_hsmmc_ops;
1591
1592        cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1593        cfg->host_caps = host_caps_val & ~host_caps_mask;
1594
1595        cfg->f_min = 400000;
1596
1597        if (f_max != 0)
1598                cfg->f_max = f_max;
1599        else {
1600                if (cfg->host_caps & MMC_MODE_HS) {
1601                        if (cfg->host_caps & MMC_MODE_HS_52MHz)
1602                                cfg->f_max = 52000000;
1603                        else
1604                                cfg->f_max = 26000000;
1605                } else
1606                        cfg->f_max = 20000000;
1607        }
1608
1609        cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1610
1611#if defined(CONFIG_OMAP34XX)
1612        /*
1613         * Silicon revs 2.1 and older do not support multiblock transfers.
1614         */
1615        if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
1616                cfg->b_max = 1;
1617#endif
1618
1619        mmc = mmc_create(cfg, priv);
1620        if (mmc == NULL)
1621                return -1;
1622
1623        return 0;
1624}
1625#else
1626
1627#ifdef CONFIG_IODELAY_RECALIBRATION
1628static struct pad_conf_entry *
1629omap_hsmmc_get_pad_conf_entry(const fdt32_t *pinctrl, int count)
1630{
1631        int index = 0;
1632        struct pad_conf_entry *padconf;
1633
1634        padconf = (struct pad_conf_entry *)malloc(sizeof(*padconf) * count);
1635        if (!padconf) {
1636                debug("failed to allocate memory\n");
1637                return 0;
1638        }
1639
1640        while (index < count) {
1641                padconf[index].offset = fdt32_to_cpu(pinctrl[2 * index]);
1642                padconf[index].val = fdt32_to_cpu(pinctrl[2 * index + 1]);
1643                index++;
1644        }
1645
1646        return padconf;
1647}
1648
1649static struct iodelay_cfg_entry *
1650omap_hsmmc_get_iodelay_cfg_entry(const fdt32_t *pinctrl, int count)
1651{
1652        int index = 0;
1653        struct iodelay_cfg_entry *iodelay;
1654
1655        iodelay = (struct iodelay_cfg_entry *)malloc(sizeof(*iodelay) * count);
1656        if (!iodelay) {
1657                debug("failed to allocate memory\n");
1658                return 0;
1659        }
1660
1661        while (index < count) {
1662                iodelay[index].offset = fdt32_to_cpu(pinctrl[3 * index]);
1663                iodelay[index].a_delay = fdt32_to_cpu(pinctrl[3 * index + 1]);
1664                iodelay[index].g_delay = fdt32_to_cpu(pinctrl[3 * index + 2]);
1665                index++;
1666        }
1667
1668        return iodelay;
1669}
1670
1671static const fdt32_t *omap_hsmmc_get_pinctrl_entry(u32  phandle,
1672                                                   const char *name, int *len)
1673{
1674        const void *fdt = gd->fdt_blob;
1675        int offset;
1676        const fdt32_t *pinctrl;
1677
1678        offset = fdt_node_offset_by_phandle(fdt, phandle);
1679        if (offset < 0) {
1680                debug("failed to get pinctrl node %s.\n",
1681                      fdt_strerror(offset));
1682                return 0;
1683        }
1684
1685        pinctrl = fdt_getprop(fdt, offset, name, len);
1686        if (!pinctrl) {
1687                debug("failed to get property %s\n", name);
1688                return 0;
1689        }
1690
1691        return pinctrl;
1692}
1693
1694static uint32_t omap_hsmmc_get_pad_conf_phandle(struct mmc *mmc,
1695                                                char *prop_name)
1696{
1697        const void *fdt = gd->fdt_blob;
1698        const __be32 *phandle;
1699        int node = dev_of_offset(mmc->dev);
1700
1701        phandle = fdt_getprop(fdt, node, prop_name, NULL);
1702        if (!phandle) {
1703                debug("failed to get property %s\n", prop_name);
1704                return 0;
1705        }
1706
1707        return fdt32_to_cpu(*phandle);
1708}
1709
1710static uint32_t omap_hsmmc_get_iodelay_phandle(struct mmc *mmc,
1711                                               char *prop_name)
1712{
1713        const void *fdt = gd->fdt_blob;
1714        const __be32 *phandle;
1715        int len;
1716        int count;
1717        int node = dev_of_offset(mmc->dev);
1718
1719        phandle = fdt_getprop(fdt, node, prop_name, &len);
1720        if (!phandle) {
1721                debug("failed to get property %s\n", prop_name);
1722                return 0;
1723        }
1724
1725        /* No manual mode iodelay values if count < 2 */
1726        count = len / sizeof(*phandle);
1727        if (count < 2)
1728                return 0;
1729
1730        return fdt32_to_cpu(*(phandle + 1));
1731}
1732
1733static struct pad_conf_entry *
1734omap_hsmmc_get_pad_conf(struct mmc *mmc, char *prop_name, int *npads)
1735{
1736        int len;
1737        int count;
1738        struct pad_conf_entry *padconf;
1739        u32 phandle;
1740        const fdt32_t *pinctrl;
1741
1742        phandle = omap_hsmmc_get_pad_conf_phandle(mmc, prop_name);
1743        if (!phandle)
1744                return ERR_PTR(-EINVAL);
1745
1746        pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-single,pins",
1747                                               &len);
1748        if (!pinctrl)
1749                return ERR_PTR(-EINVAL);
1750
1751        count = (len / sizeof(*pinctrl)) / 2;
1752        padconf = omap_hsmmc_get_pad_conf_entry(pinctrl, count);
1753        if (!padconf)
1754                return ERR_PTR(-EINVAL);
1755
1756        *npads = count;
1757
1758        return padconf;
1759}
1760
1761static struct iodelay_cfg_entry *
1762omap_hsmmc_get_iodelay(struct mmc *mmc, char *prop_name, int *niodelay)
1763{
1764        int len;
1765        int count;
1766        struct iodelay_cfg_entry *iodelay;
1767        u32 phandle;
1768        const fdt32_t *pinctrl;
1769
1770        phandle = omap_hsmmc_get_iodelay_phandle(mmc, prop_name);
1771        /* Not all modes have manual mode iodelay values. So its not fatal */
1772        if (!phandle)
1773                return 0;
1774
1775        pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-pin-array",
1776                                               &len);
1777        if (!pinctrl)
1778                return ERR_PTR(-EINVAL);
1779
1780        count = (len / sizeof(*pinctrl)) / 3;
1781        iodelay = omap_hsmmc_get_iodelay_cfg_entry(pinctrl, count);
1782        if (!iodelay)
1783                return ERR_PTR(-EINVAL);
1784
1785        *niodelay = count;
1786
1787        return iodelay;
1788}
1789
1790static struct omap_hsmmc_pinctrl_state *
1791omap_hsmmc_get_pinctrl_by_mode(struct mmc *mmc, char *mode)
1792{
1793        int index;
1794        int npads = 0;
1795        int niodelays = 0;
1796        const void *fdt = gd->fdt_blob;
1797        int node = dev_of_offset(mmc->dev);
1798        char prop_name[11];
1799        struct omap_hsmmc_pinctrl_state *pinctrl_state;
1800
1801        pinctrl_state = (struct omap_hsmmc_pinctrl_state *)
1802                         malloc(sizeof(*pinctrl_state));
1803        if (!pinctrl_state) {
1804                debug("failed to allocate memory\n");
1805                return 0;
1806        }
1807
1808        index = fdt_stringlist_search(fdt, node, "pinctrl-names", mode);
1809        if (index < 0) {
1810                debug("fail to find %s mode %s\n", mode, fdt_strerror(index));
1811                goto err_pinctrl_state;
1812        }
1813
1814        sprintf(prop_name, "pinctrl-%d", index);
1815
1816        pinctrl_state->padconf = omap_hsmmc_get_pad_conf(mmc, prop_name,
1817                                                         &npads);
1818        if (IS_ERR(pinctrl_state->padconf))
1819                goto err_pinctrl_state;
1820        pinctrl_state->npads = npads;
1821
1822        pinctrl_state->iodelay = omap_hsmmc_get_iodelay(mmc, prop_name,
1823                                                        &niodelays);
1824        if (IS_ERR(pinctrl_state->iodelay))
1825                goto err_padconf;
1826        pinctrl_state->niodelays = niodelays;
1827
1828        return pinctrl_state;
1829
1830err_padconf:
1831        kfree(pinctrl_state->padconf);
1832
1833err_pinctrl_state:
1834        kfree(pinctrl_state);
1835        return 0;
1836}
1837
1838#define OMAP_HSMMC_SETUP_PINCTRL(capmask, mode, optional)               \
1839        do {                                                            \
1840                struct omap_hsmmc_pinctrl_state *s = NULL;              \
1841                char str[20];                                           \
1842                if (!(cfg->host_caps & capmask))                        \
1843                        break;                                          \
1844                                                                        \
1845                if (priv->hw_rev) {                                     \
1846                        sprintf(str, "%s-%s", #mode, priv->hw_rev);     \
1847                        s = omap_hsmmc_get_pinctrl_by_mode(mmc, str);   \
1848                }                                                       \
1849                                                                        \
1850                if (!s)                                                 \
1851                        s = omap_hsmmc_get_pinctrl_by_mode(mmc, #mode); \
1852                                                                        \
1853                if (!s && !optional) {                                  \
1854                        debug("%s: no pinctrl for %s\n",                \
1855                              mmc->dev->name, #mode);                   \
1856                        cfg->host_caps &= ~(capmask);                   \
1857                } else {                                                \
1858                        priv->mode##_pinctrl_state = s;                 \
1859                }                                                       \
1860        } while (0)
1861
1862static int omap_hsmmc_get_pinctrl_state(struct mmc *mmc)
1863{
1864        struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1865        struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc);
1866        struct omap_hsmmc_pinctrl_state *default_pinctrl;
1867
1868        if (!(priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY))
1869                return 0;
1870
1871        default_pinctrl = omap_hsmmc_get_pinctrl_by_mode(mmc, "default");
1872        if (!default_pinctrl) {
1873                printf("no pinctrl state for default mode\n");
1874                return -EINVAL;
1875        }
1876
1877        priv->default_pinctrl_state = default_pinctrl;
1878
1879        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR104), sdr104, false);
1880        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR50), sdr50, false);
1881        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_DDR50), ddr50, false);
1882        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR25), sdr25, false);
1883        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR12), sdr12, false);
1884
1885        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_HS_200), hs200_1_8v, false);
1886        OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_DDR_52), ddr_1_8v, false);
1887        OMAP_HSMMC_SETUP_PINCTRL(MMC_MODE_HS, hs, true);
1888
1889        return 0;
1890}
1891#endif
1892
1893#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1894#ifdef CONFIG_OMAP54XX
1895__weak const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr)
1896{
1897        return NULL;
1898}
1899#endif
1900
1901static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
1902{
1903        struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
1904        struct omap_mmc_of_data *of_data = (void *)dev_get_driver_data(dev);
1905
1906        struct mmc_config *cfg = &plat->cfg;
1907#ifdef CONFIG_OMAP54XX
1908        const struct mmc_platform_fixups *fixups;
1909#endif
1910        const void *fdt = gd->fdt_blob;
1911        int node = dev_of_offset(dev);
1912        int ret;
1913
1914        plat->base_addr = map_physmem(dev_read_addr(dev),
1915                                      sizeof(struct hsmmc *),
1916                                      MAP_NOCACHE);
1917
1918        ret = mmc_of_parse(dev, cfg);
1919        if (ret < 0)
1920                return ret;
1921
1922        if (!cfg->f_max)
1923                cfg->f_max = 52000000;
1924        cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
1925        cfg->f_min = 400000;
1926        cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1927        cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1928        if (fdtdec_get_bool(fdt, node, "ti,dual-volt"))
1929                plat->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
1930        if (fdtdec_get_bool(fdt, node, "no-1-8-v"))
1931                plat->controller_flags |= OMAP_HSMMC_NO_1_8_V;
1932        if (of_data)
1933                plat->controller_flags |= of_data->controller_flags;
1934
1935#ifdef CONFIG_OMAP54XX
1936        fixups = platform_fixups_mmc(dev_read_addr(dev));
1937        if (fixups) {
1938                plat->hw_rev = fixups->hw_rev;
1939                cfg->host_caps &= ~fixups->unsupported_caps;
1940                cfg->f_max = fixups->max_freq;
1941        }
1942#endif
1943
1944        return 0;
1945}
1946#endif
1947
1948#ifdef CONFIG_BLK
1949
1950static int omap_hsmmc_bind(struct udevice *dev)
1951{
1952        struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
1953        plat->mmc = calloc(1, sizeof(struct mmc));
1954        return mmc_bind(dev, plat->mmc, &plat->cfg);
1955}
1956#endif
1957static int omap_hsmmc_probe(struct udevice *dev)
1958{
1959        struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
1960        struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1961        struct omap_hsmmc_data *priv = dev_get_priv(dev);
1962        struct mmc_config *cfg = &plat->cfg;
1963        struct mmc *mmc;
1964#ifdef CONFIG_IODELAY_RECALIBRATION
1965        int ret;
1966#endif
1967
1968        cfg->name = "OMAP SD/MMC";
1969        priv->base_addr = plat->base_addr;
1970        priv->controller_flags = plat->controller_flags;
1971        priv->hw_rev = plat->hw_rev;
1972
1973#ifdef CONFIG_BLK
1974        mmc = plat->mmc;
1975#else
1976        mmc = mmc_create(cfg, priv);
1977        if (mmc == NULL)
1978                return -1;
1979#endif
1980#if CONFIG_IS_ENABLED(DM_REGULATOR)
1981        device_get_supply_regulator(dev, "pbias-supply",
1982                                    &priv->pbias_supply);
1983#endif
1984#if defined(OMAP_HSMMC_USE_GPIO)
1985#if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_GPIO)
1986        gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN);
1987        gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN);
1988#endif
1989#endif
1990
1991        mmc->dev = dev;
1992        upriv->mmc = mmc;
1993
1994#ifdef CONFIG_IODELAY_RECALIBRATION
1995        ret = omap_hsmmc_get_pinctrl_state(mmc);
1996        /*
1997         * disable high speed modes for the platforms that require IO delay
1998         * and for which we don't have this information
1999         */
2000        if ((ret < 0) &&
2001            (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY)) {
2002                priv->controller_flags &= ~OMAP_HSMMC_REQUIRE_IODELAY;
2003                cfg->host_caps &= ~(MMC_CAP(MMC_HS_200) | MMC_CAP(MMC_DDR_52) |
2004                                    UHS_CAPS);
2005        }
2006#endif
2007
2008        return omap_hsmmc_init_setup(mmc);
2009}
2010
2011#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
2012
2013static const struct omap_mmc_of_data dra7_mmc_of_data = {
2014        .controller_flags = OMAP_HSMMC_REQUIRE_IODELAY,
2015};
2016
2017static const struct udevice_id omap_hsmmc_ids[] = {
2018        { .compatible = "ti,omap3-hsmmc" },
2019        { .compatible = "ti,omap4-hsmmc" },
2020        { .compatible = "ti,am33xx-hsmmc" },
2021        { .compatible = "ti,dra7-hsmmc", .data = (ulong)&dra7_mmc_of_data },
2022        { }
2023};
2024#endif
2025
2026U_BOOT_DRIVER(omap_hsmmc) = {
2027        .name   = "omap_hsmmc",
2028        .id     = UCLASS_MMC,
2029#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
2030        .of_match = omap_hsmmc_ids,
2031        .ofdata_to_platdata = omap_hsmmc_ofdata_to_platdata,
2032        .platdata_auto_alloc_size = sizeof(struct omap_hsmmc_plat),
2033#endif
2034#ifdef CONFIG_BLK
2035        .bind = omap_hsmmc_bind,
2036#endif
2037        .ops = &omap_hsmmc_ops,
2038        .probe  = omap_hsmmc_probe,
2039        .priv_auto_alloc_size = sizeof(struct omap_hsmmc_data),
2040#if !CONFIG_IS_ENABLED(OF_CONTROL)
2041        .flags  = DM_FLAG_PRE_RELOC,
2042#endif
2043};
2044#endif
2045