drivers/spi/ich.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2011-12 The Chromium OS Authors.
   4  *
   5  * This file is derived from the flashrom project.
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <errno.h>
  11 #include <malloc.h>
  12 #include <pch.h>
  13 #include <pci.h>
  14 #include <pci_ids.h>
  15 #include <spi.h>
  16 #include <asm/io.h>
  17 #include <spi-mem.h>
  18 #include <div64.h>
  19
  20 #include "ich.h"
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 #ifdef DEBUG_TRACE
  25 #define debug_trace(fmt, args...) debug(fmt, ##args)
  26 #else
  27 #define debug_trace(x, args...)
  28 #endif
  29
  30 static u8 ich_readb(struct ich_spi_priv *priv, int reg)
  31 {
  32         u8 value = readb(priv->base + reg);
  33
  34         debug_trace("read %2.2x from %4.4x\n", value, reg);
  35
  36         return value;
  37 }
  38
  39 static u16 ich_readw(struct ich_spi_priv *priv, int reg)
  40 {
  41         u16 value = readw(priv->base + reg);
  42
  43         debug_trace("read %4.4x from %4.4x\n", value, reg);
  44
  45         return value;
  46 }
  47
  48 static u32 ich_readl(struct ich_spi_priv *priv, int reg)
  49 {
  50         u32 value = readl(priv->base + reg);
  51
  52         debug_trace("read %8.8x from %4.4x\n", value, reg);
  53
  54         return value;
  55 }
  56
  57 static void ich_writeb(struct ich_spi_priv *priv, u8 value, int reg)
  58 {
  59         writeb(value, priv->base + reg);
  60         debug_trace("wrote %2.2x to %4.4x\n", value, reg);
  61 }
  62
  63 static void ich_writew(struct ich_spi_priv *priv, u16 value, int reg)
  64 {
  65         writew(value, priv->base + reg);
  66         debug_trace("wrote %4.4x to %4.4x\n", value, reg);
  67 }
  68
  69 static void ich_writel(struct ich_spi_priv *priv, u32 value, int reg)
  70 {
  71         writel(value, priv->base + reg);
  72         debug_trace("wrote %8.8x to %4.4x\n", value, reg);
  73 }
  74
  75 static void write_reg(struct ich_spi_priv *priv, const void *value,
  76                       int dest_reg, uint32_t size)
  77 {
  78         memcpy_toio(priv->base + dest_reg, value, size);
  79 }
  80
  81 static void read_reg(struct ich_spi_priv *priv, int src_reg, void *value,
  82                      uint32_t size)
  83 {
  84         memcpy_fromio(value, priv->base + src_reg, size);
  85 }
  86
  87 static void ich_set_bbar(struct ich_spi_priv *ctlr, uint32_t minaddr)
  88 {
  89         const uint32_t bbar_mask = 0x00ffff00;
  90         uint32_t ichspi_bbar;
  91
  92         minaddr &= bbar_mask;
  93         ichspi_bbar = ich_readl(ctlr, ctlr->bbar) & ~bbar_mask;
  94         ichspi_bbar |= minaddr;
  95         ich_writel(ctlr, ichspi_bbar, ctlr->bbar);
  96 }
  97
  98 /* @return 1 if the SPI flash supports the 33MHz speed */
  99 static int ich9_can_do_33mhz(struct udevice *dev)
 100 {
 101         u32 fdod, speed;
 102
 103         /* Observe SPI Descriptor Component Section 0 */
 104         dm_pci_write_config32(dev->parent, 0xb0, 0x1000);
 105
 106         /* Extract the Write/Erase SPI Frequency from descriptor */
 107         dm_pci_read_config32(dev->parent, 0xb4, &fdod);
 108
 109         /* Bits 23:21 have the fast read clock frequency, 0=20MHz, 1=33MHz */
 110         speed = (fdod >> 21) & 7;
 111
 112         return speed == 1;
 113 }
 114
 115 static void spi_lock_down(struct ich_spi_platdata *plat, void *sbase)
 116 {
 117         if (plat->ich_version == ICHV_7) {
 118                 struct ich7_spi_regs *ich7_spi = sbase;
 119
 120                 setbits_le16(&ich7_spi->spis, SPIS_LOCK);
 121         } else if (plat->ich_version == ICHV_9) {
 122                 struct ich9_spi_regs *ich9_spi = sbase;
 123
 124                 setbits_le16(&ich9_spi->hsfs, HSFS_FLOCKDN);
 125         }
 126 }
 127
 128 static bool spi_lock_status(struct ich_spi_platdata *plat, void *sbase)
 129 {
 130         int lock = 0;
 131
 132         if (plat->ich_version == ICHV_7) {
 133                 struct ich7_spi_regs *ich7_spi = sbase;
 134
 135                 lock = readw(&ich7_spi->spis) & SPIS_LOCK;
 136         } else if (plat->ich_version == ICHV_9) {
 137                 struct ich9_spi_regs *ich9_spi = sbase;
 138
 139                 lock = readw(&ich9_spi->hsfs) & HSFS_FLOCKDN;
 140         }
 141
 142         return lock != 0;
 143 }
 144
 145 static int spi_setup_opcode(struct ich_spi_priv *ctlr, struct spi_trans *trans,
 146                             bool lock)
 147 {
 148         uint16_t optypes;
 149         uint8_t opmenu[ctlr->menubytes];
 150
 151         if (!lock) {
 152                 /* The lock is off, so just use index 0. */
 153                 ich_writeb(ctlr, trans->opcode, ctlr->opmenu);
 154                 optypes = ich_readw(ctlr, ctlr->optype);
 155                 optypes = (optypes & 0xfffc) | (trans->type & 0x3);
 156                 ich_writew(ctlr, optypes, ctlr->optype);
 157                 return 0;
 158         } else {
 159                 /* The lock is on. See if what we need is on the menu. */
 160                 uint8_t optype;
 161                 uint16_t opcode_index;
 162
 163                 /* Write Enable is handled as atomic prefix */
 164                 if (trans->opcode == SPI_OPCODE_WREN)
 165                         return 0;
 166
 167                 read_reg(ctlr, ctlr->opmenu, opmenu, sizeof(opmenu));
 168                 for (opcode_index = 0; opcode_index < ctlr->menubytes;
 169                                 opcode_index++) {
 170                         if (opmenu[opcode_index] == trans->opcode)
 171                                 break;
 172                 }
 173
 174                 if (opcode_index == ctlr->menubytes) {
 175                         printf("ICH SPI: Opcode %x not found\n",
 176                                trans->opcode);
 177                         return -EINVAL;
 178                 }
 179
 180                 optypes = ich_readw(ctlr, ctlr->optype);
 181                 optype = (optypes >> (opcode_index * 2)) & 0x3;
 182
 183                 if (optype != trans->type) {
 184                         printf("ICH SPI: Transaction doesn't fit type %d\n",
 185                                optype);
 186                         return -ENOSPC;
 187                 }
 188                 return opcode_index;
 189         }
 190 }
 191
 192 /*
 193  * Wait for up to 6s til status register bit(s) turn 1 (in case wait_til_set
 194  * below is true) or 0. In case the wait was for the bit(s) to set - write
 195  * those bits back, which would cause resetting them.
 196  *
 197  * Return the last read status value on success or -1 on failure.
 198  */
 199 static int ich_status_poll(struct ich_spi_priv *ctlr, u16 bitmask,
 200                            int wait_til_set)
 201 {
 202         int timeout = 600000; /* This will result in 6s */
 203         u16 status = 0;
 204
 205         while (timeout--) {
 206                 status = ich_readw(ctlr, ctlr->status);
 207                 if (wait_til_set ^ ((status & bitmask) == 0)) {
 208                         if (wait_til_set) {
 209                                 ich_writew(ctlr, status & bitmask,
 210                                            ctlr->status);
 211                         }
 212                         return status;
 213                 }
 214                 udelay(10);
 215         }
 216
 217         printf("ICH SPI: SCIP timeout, read %x, expected %x\n",
 218                status, bitmask);
 219         return -ETIMEDOUT;
 220 }
 221
 222 static void ich_spi_config_opcode(struct udevice *dev)
 223 {
 224         struct ich_spi_priv *ctlr = dev_get_priv(dev);
 225
 226         /*
 227          * PREOP, OPTYPE, OPMENU1/OPMENU2 registers can be locked down
 228          * to prevent accidental or intentional writes. Before they get
 229          * locked down, these registers should be initialized properly.
 230          */
 231         ich_writew(ctlr, SPI_OPPREFIX, ctlr->preop);
 232         ich_writew(ctlr, SPI_OPTYPE, ctlr->optype);
 233         ich_writel(ctlr, SPI_OPMENU_LOWER, ctlr->opmenu);
 234         ich_writel(ctlr, SPI_OPMENU_UPPER, ctlr->opmenu + sizeof(u32));
 235 }
 236
 237 static int ich_spi_exec_op(struct spi_slave *slave, const struct spi_mem_op *op)
 238 {
 239         struct udevice *bus = dev_get_parent(slave->dev);
 240         struct ich_spi_platdata *plat = dev_get_platdata(bus);
 241         struct ich_spi_priv *ctlr = dev_get_priv(bus);
 242         uint16_t control;
 243         int16_t opcode_index;
 244         int with_address;
 245         int status;
 246         struct spi_trans *trans = &ctlr->trans;
 247         bool lock = spi_lock_status(plat, ctlr->base);
 248         int ret = 0;
 249
 250         trans->in = NULL;
 251         trans->out = NULL;
 252         trans->type = 0xFF;
 253
 254         if (op->data.nbytes) {
 255                 if (op->data.dir == SPI_MEM_DATA_IN) {
 256                         trans->in = op->data.buf.in;
 257                         trans->bytesin = op->data.nbytes;
 258                 } else {
 259                         trans->out = op->data.buf.out;
 260                         trans->bytesout = op->data.nbytes;
 261                 }
 262         }
 263
 264         if (trans->opcode != op->cmd.opcode)
 265                 trans->opcode = op->cmd.opcode;
 266
 267         if (lock && trans->opcode == SPI_OPCODE_WRDIS)
 268                 return 0;
 269
 270         if (trans->opcode == SPI_OPCODE_WREN) {
 271                 /*
 272                  * Treat Write Enable as Atomic Pre-Op if possible
 273                  * in order to prevent the Management Engine from
 274                  * issuing a transaction between WREN and DATA.
 275                  */
 276                 if (!lock)
 277                         ich_writew(ctlr, trans->opcode, ctlr->preop);
 278                 return 0;
 279         }
 280
 281         ret = ich_status_poll(ctlr, SPIS_SCIP, 0);
 282         if (ret < 0)
 283                 return ret;
 284
 285         if (plat->ich_version == ICHV_7)
 286                 ich_writew(ctlr, SPIS_CDS | SPIS_FCERR, ctlr->status);
 287         else
 288                 ich_writeb(ctlr, SPIS_CDS | SPIS_FCERR, ctlr->status);
 289
 290         /* Try to guess spi transaction type */
 291         if (op->data.dir == SPI_MEM_DATA_OUT) {
 292                 if (op->addr.nbytes)
 293                         trans->type = SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS;
 294                 else
 295                         trans->type = SPI_OPCODE_TYPE_WRITE_NO_ADDRESS;
 296         } else {
 297                 if (op->addr.nbytes)
 298                         trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS;
 299                 else
 300                         trans->type = SPI_OPCODE_TYPE_READ_NO_ADDRESS;
 301         }
 302         /* Special erase case handling */
 303         if (op->addr.nbytes && !op->data.buswidth)
 304                 trans->type = SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS;
 305
 306         opcode_index = spi_setup_opcode(ctlr, trans, lock);
 307         if (opcode_index < 0)
 308                 return -EINVAL;
 309
 310         if (op->addr.nbytes) {
 311                 trans->offset = op->addr.val;
 312                 with_address = 1;
 313         }
 314
 315         if (ctlr->speed && ctlr->max_speed >= 33000000) {
 316                 int byte;
 317
 318                 byte = ich_readb(ctlr, ctlr->speed);
 319                 if (ctlr->cur_speed >= 33000000)
 320                         byte |= SSFC_SCF_33MHZ;
 321                 else
 322                         byte &= ~SSFC_SCF_33MHZ;
 323                 ich_writeb(ctlr, byte, ctlr->speed);
 324         }
 325
 326         /* Preset control fields */
 327         control = SPIC_SCGO | ((opcode_index & 0x07) << 4);
 328
 329         /* Issue atomic preop cycle if needed */
 330         if (ich_readw(ctlr, ctlr->preop))
 331                 control |= SPIC_ACS;
 332
 333         if (!trans->bytesout && !trans->bytesin) {
 334                 /* SPI addresses are 24 bit only */
 335                 if (with_address) {
 336                         ich_writel(ctlr, trans->offset & 0x00FFFFFF,
 337                                    ctlr->addr);
 338                 }
 339                 /*
 340                  * This is a 'no data' command (like Write Enable), its
 341                  * bitesout size was 1, decremented to zero while executing
 342                  * spi_setup_opcode() above. Tell the chip to send the
 343                  * command.
 344                  */
 345                 ich_writew(ctlr, control, ctlr->control);
 346
 347                 /* wait for the result */
 348                 status = ich_status_poll(ctlr, SPIS_CDS | SPIS_FCERR, 1);
 349                 if (status < 0)
 350                         return status;
 351
 352                 if (status & SPIS_FCERR) {
 353                         debug("ICH SPI: Command transaction error\n");
 354                         return -EIO;
 355                 }
 356
 357                 return 0;
 358         }
 359
 360         while (trans->bytesout || trans->bytesin) {
 361                 uint32_t data_length;
 362
 363                 /* SPI addresses are 24 bit only */
 364                 ich_writel(ctlr, trans->offset & 0x00FFFFFF, ctlr->addr);
 365
 366                 if (trans->bytesout)
 367                         data_length = min(trans->bytesout, ctlr->databytes);
 368                 else
 369                         data_length = min(trans->bytesin, ctlr->databytes);
 370
 371                 /* Program data into FDATA0 to N */
 372                 if (trans->bytesout) {
 373                         write_reg(ctlr, trans->out, ctlr->data, data_length);
 374                         trans->bytesout -= data_length;
 375                 }
 376
 377                 /* Add proper control fields' values */
 378                 control &= ~((ctlr->databytes - 1) << 8);
 379                 control |= SPIC_DS;
 380                 control |= (data_length - 1) << 8;
 381
 382                 /* write it */
 383                 ich_writew(ctlr, control, ctlr->control);
 384
 385                 /* Wait for Cycle Done Status or Flash Cycle Error */
 386                 status = ich_status_poll(ctlr, SPIS_CDS | SPIS_FCERR, 1);
 387                 if (status < 0)
 388                         return status;
 389
 390                 if (status & SPIS_FCERR) {
 391                         debug("ICH SPI: Data transaction error %x\n", status);
 392                         return -EIO;
 393                 }
 394
 395                 if (trans->bytesin) {
 396                         read_reg(ctlr, ctlr->data, trans->in, data_length);
 397                         trans->bytesin -= data_length;
 398                 }
 399         }
 400
 401         /* Clear atomic preop now that xfer is done */
 402         if (!lock)
 403                 ich_writew(ctlr, 0, ctlr->preop);
 404
 405         return 0;
 406 }
 407
 408 static int ich_spi_adjust_size(struct spi_slave *slave, struct spi_mem_op *op)
 409 {
 410         unsigned int page_offset;
 411         int addr = op->addr.val;
 412         unsigned int byte_count = op->data.nbytes;
 413
 414         if (hweight32(ICH_BOUNDARY) == 1) {
 415                 page_offset = addr & (ICH_BOUNDARY - 1);
 416         } else {
 417                 u64 aux = addr;
 418
 419                 page_offset = do_div(aux, ICH_BOUNDARY);
 420         }
 421
 422         if (op->data.dir == SPI_MEM_DATA_IN && slave->max_read_size) {
 423                 op->data.nbytes = min(ICH_BOUNDARY - page_offset,
 424                                       slave->max_read_size);
 425         } else if (slave->max_write_size) {
 426                 op->data.nbytes = min(ICH_BOUNDARY - page_offset,
 427                                       slave->max_write_size);
 428         }
 429
 430         op->data.nbytes = min(op->data.nbytes, byte_count);
 431
 432         return 0;
 433 }
 434
 435 static int ich_init_controller(struct udevice *dev,
 436                                struct ich_spi_platdata *plat,
 437                                struct ich_spi_priv *ctlr)
 438 {
 439         ulong sbase_addr;
 440         void *sbase;
 441
 442         /* SBASE is similar */
 443         pch_get_spi_base(dev->parent, &sbase_addr);
 444         sbase = (void *)sbase_addr;
 445         debug("%s: sbase=%p\n", __func__, sbase);
 446
 447         if (plat->ich_version == ICHV_7) {
 448                 struct ich7_spi_regs *ich7_spi = sbase;
 449
 450                 ctlr->opmenu = offsetof(struct ich7_spi_regs, opmenu);
 451                 ctlr->menubytes = sizeof(ich7_spi->opmenu);
 452                 ctlr->optype = offsetof(struct ich7_spi_regs, optype);
 453                 ctlr->addr = offsetof(struct ich7_spi_regs, spia);
 454                 ctlr->data = offsetof(struct ich7_spi_regs, spid);
 455                 ctlr->databytes = sizeof(ich7_spi->spid);
 456                 ctlr->status = offsetof(struct ich7_spi_regs, spis);
 457                 ctlr->control = offsetof(struct ich7_spi_regs, spic);
 458                 ctlr->bbar = offsetof(struct ich7_spi_regs, bbar);
 459                 ctlr->preop = offsetof(struct ich7_spi_regs, preop);
 460                 ctlr->base = ich7_spi;
 461         } else if (plat->ich_version == ICHV_9) {
 462                 struct ich9_spi_regs *ich9_spi = sbase;
 463
 464                 ctlr->opmenu = offsetof(struct ich9_spi_regs, opmenu);
 465                 ctlr->menubytes = sizeof(ich9_spi->opmenu);
 466                 ctlr->optype = offsetof(struct ich9_spi_regs, optype);
 467                 ctlr->addr = offsetof(struct ich9_spi_regs, faddr);
 468                 ctlr->data = offsetof(struct ich9_spi_regs, fdata);
 469                 ctlr->databytes = sizeof(ich9_spi->fdata);
 470                 ctlr->status = offsetof(struct ich9_spi_regs, ssfs);
 471                 ctlr->control = offsetof(struct ich9_spi_regs, ssfc);
 472                 ctlr->speed = ctlr->control + 2;
 473                 ctlr->bbar = offsetof(struct ich9_spi_regs, bbar);
 474                 ctlr->preop = offsetof(struct ich9_spi_regs, preop);
 475                 ctlr->bcr = offsetof(struct ich9_spi_regs, bcr);
 476                 ctlr->pr = &ich9_spi->pr[0];
 477                 ctlr->base = ich9_spi;
 478         } else {
 479                 debug("ICH SPI: Unrecognised ICH version %d\n",
 480                       plat->ich_version);
 481                 return -EINVAL;
 482         }
 483
 484         /* Work out the maximum speed we can support */
 485         ctlr->max_speed = 20000000;
 486         if (plat->ich_version == ICHV_9 && ich9_can_do_33mhz(dev))
 487                 ctlr->max_speed = 33000000;
 488         debug("ICH SPI: Version ID %d detected at %p, speed %ld\n",
 489               plat->ich_version, ctlr->base, ctlr->max_speed);
 490
 491         ich_set_bbar(ctlr, 0);
 492
 493         return 0;
 494 }
 495
 496 static int ich_spi_probe(struct udevice *dev)
 497 {
 498         struct ich_spi_platdata *plat = dev_get_platdata(dev);
 499         struct ich_spi_priv *priv = dev_get_priv(dev);
 500         uint8_t bios_cntl;
 501         int ret;
 502
 503         ret = ich_init_controller(dev, plat, priv);
 504         if (ret)
 505                 return ret;
 506         /* Disable the BIOS write protect so write commands are allowed */
 507         ret = pch_set_spi_protect(dev->parent, false);
 508         if (ret == -ENOSYS) {
 509                 bios_cntl = ich_readb(priv, priv->bcr);
 510                 bios_cntl &= ~BIT(5);   /* clear Enable InSMM_STS (EISS) */
 511                 bios_cntl |= 1;         /* Write Protect Disable (WPD) */
 512                 ich_writeb(priv, bios_cntl, priv->bcr);
 513         } else if (ret) {
 514                 debug("%s: Failed to disable write-protect: err=%d\n",
 515                       __func__, ret);
 516                 return ret;
 517         }
 518
 519         /* Lock down SPI controller settings if required */
 520         if (plat->lockdown) {
 521                 ich_spi_config_opcode(dev);
 522                 spi_lock_down(plat, priv->base);
 523         }
 524
 525         priv->cur_speed = priv->max_speed;
 526
 527         return 0;
 528 }
 529
 530 static int ich_spi_remove(struct udevice *bus)
 531 {
 532         /*
 533          * Configure SPI controller so that the Linux MTD driver can fully
 534          * access the SPI NOR chip
 535          */
 536         ich_spi_config_opcode(bus);
 537
 538         return 0;
 539 }
 540
 541 static int ich_spi_set_speed(struct udevice *bus, uint speed)
 542 {
 543         struct ich_spi_priv *priv = dev_get_priv(bus);
 544
 545         priv->cur_speed = speed;
 546
 547         return 0;
 548 }
 549
 550 static int ich_spi_set_mode(struct udevice *bus, uint mode)
 551 {
 552         debug("%s: mode=%d\n", __func__, mode);
 553
 554         return 0;
 555 }
 556
 557 static int ich_spi_child_pre_probe(struct udevice *dev)
 558 {
 559         struct udevice *bus = dev_get_parent(dev);
 560         struct ich_spi_platdata *plat = dev_get_platdata(bus);
 561         struct ich_spi_priv *priv = dev_get_priv(bus);
 562         struct spi_slave *slave = dev_get_parent_priv(dev);
 563
 564         /*
 565          * Yes this controller can only write a small number of bytes at
 566          * once! The limit is typically 64 bytes.
 567          */
 568         slave->max_write_size = priv->databytes;
 569         /*
 570          * ICH 7 SPI controller only supports array read command
 571          * and byte program command for SST flash
 572          */
 573         if (plat->ich_version == ICHV_7)
 574                 slave->mode = SPI_RX_SLOW | SPI_TX_BYTE;
 575
 576         return 0;
 577 }
 578
 579 static int ich_spi_ofdata_to_platdata(struct udevice *dev)
 580 {
 581         struct ich_spi_platdata *plat = dev_get_platdata(dev);
 582         int node = dev_of_offset(dev);
 583         int ret;
 584
 585         ret = fdt_node_check_compatible(gd->fdt_blob, node, "intel,ich7-spi");
 586         if (ret == 0) {
 587                 plat->ich_version = ICHV_7;
 588         } else {
 589                 ret = fdt_node_check_compatible(gd->fdt_blob, node,
 590                                                 "intel,ich9-spi");
 591                 if (ret == 0)
 592                         plat->ich_version = ICHV_9;
 593         }
 594
 595         plat->lockdown = fdtdec_get_bool(gd->fdt_blob, node,
 596                                          "intel,spi-lock-down");
 597
 598         return ret;
 599 }
 600
 601 static const struct spi_controller_mem_ops ich_controller_mem_ops = {
 602         .adjust_op_size = ich_spi_adjust_size,
 603         .supports_op    = NULL,
 604         .exec_op        = ich_spi_exec_op,
 605 };
 606
 607 static const struct dm_spi_ops ich_spi_ops = {
 608         /* xfer is not supported */
 609         .set_speed      = ich_spi_set_speed,
 610         .set_mode       = ich_spi_set_mode,
 611         .mem_ops        = &ich_controller_mem_ops,
 612         /*
 613          * cs_info is not needed, since we require all chip selects to be
 614          * in the device tree explicitly
 615          */
 616 };
 617
 618 static const struct udevice_id ich_spi_ids[] = {
 619         { .compatible = "intel,ich7-spi" },
 620         { .compatible = "intel,ich9-spi" },
 621         { }
 622 };
 623
 624 U_BOOT_DRIVER(ich_spi) = {
 625         .name   = "ich_spi",
 626         .id     = UCLASS_SPI,
 627         .of_match = ich_spi_ids,
 628         .ops    = &ich_spi_ops,
 629         .ofdata_to_platdata = ich_spi_ofdata_to_platdata,
 630         .platdata_auto_alloc_size = sizeof(struct ich_spi_platdata),
 631         .priv_auto_alloc_size = sizeof(struct ich_spi_priv),
 632         .child_pre_probe = ich_spi_child_pre_probe,
 633         .probe  = ich_spi_probe,
 634         .remove = ich_spi_remove,
 635         .flags  = DM_FLAG_OS_PREPARE,
 636 };