drivers/mmc/host/Kconfig

   1 #
   2 # MMC/SD host controller drivers
   3 #
   4
   5 comment "MMC/SD/SDIO Host Controller Drivers"
   6
   7 config MMC_ARMMMCI
   8         tristate "ARM AMBA Multimedia Card Interface support"
   9         depends on ARM_AMBA
  10         help
  11           This selects the ARM(R) AMBA(R) PrimeCell Multimedia Card
  12           Interface (PL180 and PL181) support.  If you have an ARM(R)
  13           platform with a Multimedia Card slot, say Y or M here.
  14
  15           If unsure, say N.
  16
  17 config MMC_PXA
  18         tristate "Intel PXA25x/26x/27x Multimedia Card Interface support"
  19         depends on ARCH_PXA
  20         help
  21           This selects the Intel(R) PXA(R) Multimedia card Interface.
  22           If you have a PXA(R) platform with a Multimedia Card slot,
  23           say Y or M here.
  24
  25           If unsure, say N.
  26
  27 config MMC_SDHCI
  28         tristate "Secure Digital Host Controller Interface support"
  29         depends on HAS_DMA
  30         help
  31           This selects the generic Secure Digital Host Controller Interface.
  32           It is used by manufacturers such as Texas Instruments(R), Ricoh(R)
  33           and Toshiba(R). Most controllers found in laptops are of this type.
  34
  35           If you have a controller with this interface, say Y or M here. You
  36           also need to enable an appropriate bus interface.
  37
  38           If unsure, say N.
  39
  40 config MMC_SDHCI_IO_ACCESSORS
  41         bool
  42         depends on MMC_SDHCI
  43         help
  44           This is silent Kconfig symbol that is selected by the drivers that
  45           need to overwrite SDHCI IO memory accessors.
  46
  47 config MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
  48         bool
  49         select MMC_SDHCI_IO_ACCESSORS
  50         help
  51           This option is selected by drivers running on big endian hosts
  52           and performing I/O to a SDHCI controller through a bus that
  53           implements a hardware byte swapper using a 32-bit datum.
  54           This endian mapping mode is called "data invariance" and
  55           has the effect of scrambling the addresses and formats of data
  56           accessed in sizes other than the datum size.
  57
  58           This is the case for the Freescale eSDHC and Nintendo Wii SDHCI.
  59
  60 config MMC_SDHCI_PCI
  61         tristate "SDHCI support on PCI bus"
  62         depends on MMC_SDHCI && PCI
  63         help
  64           This selects the PCI Secure Digital Host Controller Interface.
  65           Most controllers found today are PCI devices.
  66
  67           If you have a controller with this interface, say Y or M here.
  68
  69           If unsure, say N.
  70
  71 config MMC_RICOH_MMC
  72         bool "Ricoh MMC Controller Disabler"
  73         depends on MMC_SDHCI_PCI
  74         help
  75           This adds a pci quirk to disable Ricoh MMC Controller. This
  76           proprietary controller is unnecessary because the SDHCI driver
  77           supports MMC cards on the SD controller, but if it is not
  78           disabled, it will steal the MMC cards away - rendering them
  79           useless. It is safe to select this even if you don't
  80           have a Ricoh based card reader.
  81
  82           If unsure, say Y.
  83
  84 config MMC_SDHCI_ACPI
  85         tristate "SDHCI support for ACPI enumerated SDHCI controllers"
  86         depends on MMC_SDHCI && ACPI
  87         help
  88           This selects support for ACPI enumerated SDHCI controllers,
  89           identified by ACPI Compatibility ID PNP0D40 or specific
  90           ACPI Hardware IDs.
  91
  92           If you have a controller with this interface, say Y or M here.
  93
  94           If unsure, say N.
  95
  96 config MMC_SDHCI_PLTFM
  97         tristate "SDHCI platform and OF driver helper"
  98         depends on MMC_SDHCI
  99         help
 100           This selects the common helper functions support for Secure Digital
 101           Host Controller Interface based platform and OF drivers.
 102
 103           If you have a controller with this interface, say Y or M here.
 104
 105           If unsure, say N.
 106
 107 config MMC_SDHCI_OF_ESDHC
 108         tristate "SDHCI OF support for the Freescale eSDHC controller"
 109         depends on MMC_SDHCI_PLTFM
 110         depends on PPC_OF
 111         select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
 112         help
 113           This selects the Freescale eSDHC controller support.
 114
 115           If you have a controller with this interface, say Y or M here.
 116
 117           If unsure, say N.
 118
 119 config MMC_SDHCI_OF_HLWD
 120         tristate "SDHCI OF support for the Nintendo Wii SDHCI controllers"
 121         depends on MMC_SDHCI_PLTFM
 122         depends on PPC_OF
 123         select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
 124         help
 125           This selects the Secure Digital Host Controller Interface (SDHCI)
 126           found in the "Hollywood" chipset of the Nintendo Wii video game
 127           console.
 128
 129           If you have a controller with this interface, say Y or M here.
 130
 131           If unsure, say N.
 132
 133 config MMC_SDHCI_CNS3XXX
 134         tristate "SDHCI support on the Cavium Networks CNS3xxx SoC"
 135         depends on ARCH_CNS3XXX
 136         depends on MMC_SDHCI_PLTFM
 137         help
 138           This selects the SDHCI support for CNS3xxx System-on-Chip devices.
 139
 140           If you have a controller with this interface, say Y or M here.
 141
 142           If unsure, say N.
 143
 144 config MMC_SDHCI_ESDHC_IMX
 145         tristate "SDHCI support for the Freescale eSDHC/uSDHC i.MX controller"
 146         depends on ARCH_MXC
 147         depends on MMC_SDHCI_PLTFM
 148         select MMC_SDHCI_IO_ACCESSORS
 149         help
 150           This selects the Freescale eSDHC/uSDHC controller support
 151           found on i.MX25, i.MX35 i.MX5x and i.MX6x.
 152
 153           If you have a controller with this interface, say Y or M here.
 154
 155           If unsure, say N.
 156
 157 config MMC_SDHCI_DOVE
 158         tristate "SDHCI support on Marvell's Dove SoC"
 159         depends on ARCH_DOVE
 160         depends on MMC_SDHCI_PLTFM
 161         select MMC_SDHCI_IO_ACCESSORS
 162         help
 163           This selects the Secure Digital Host Controller Interface in
 164           Marvell's Dove SoC.
 165
 166           If you have a controller with this interface, say Y or M here.
 167
 168           If unsure, say N.
 169
 170 config MMC_SDHCI_TEGRA
 171         tristate "SDHCI platform support for the Tegra SD/MMC Controller"
 172         depends on ARCH_TEGRA
 173         depends on MMC_SDHCI_PLTFM
 174         select MMC_SDHCI_IO_ACCESSORS
 175         help
 176           This selects the Tegra SD/MMC controller. If you have a Tegra
 177           platform with SD or MMC devices, say Y or M here.
 178
 179           If unsure, say N.
 180
 181 config MMC_SDHCI_S3C
 182         tristate "SDHCI support on Samsung S3C SoC"
 183         depends on MMC_SDHCI && PLAT_SAMSUNG_SINGLE
 184         help
 185           This selects the Secure Digital Host Controller Interface (SDHCI)
 186           often referrered to as the HSMMC block in some of the Samsung S3C
 187           range of SoC.
 188
 189           If you have a controller with this interface, say Y or M here.
 190
 191           If unsure, say N.
 192
 193 config MMC_SDHCI_PXAV3
 194         tristate "Marvell MMP2 SD Host Controller support (PXAV3)"
 195         depends on CLKDEV_LOOKUP
 196         select MMC_SDHCI
 197         select MMC_SDHCI_PLTFM
 198         default CPU_MMP2
 199         help
 200           This selects the Marvell(R) PXAV3 SD Host Controller.
 201           If you have a MMP2 platform with SD Host Controller
 202           and a card slot, say Y or M here.
 203
 204           If unsure, say N.
 205
 206 config MMC_SDHCI_PXAV2
 207         tristate "Marvell PXA9XX SD Host Controller support (PXAV2)"
 208         depends on CLKDEV_LOOKUP
 209         select MMC_SDHCI
 210         select MMC_SDHCI_PLTFM
 211         default CPU_PXA910
 212         help
 213           This selects the Marvell(R) PXAV2 SD Host Controller.
 214           If you have a PXA9XX platform with SD Host Controller
 215           and a card slot, say Y or M here.
 216
 217           If unsure, say N.
 218
 219 config MMC_SDHCI_SPEAR
 220         tristate "SDHCI support on ST SPEAr platform"
 221         depends on MMC_SDHCI && PLAT_SPEAR
 222         help
 223           This selects the Secure Digital Host Controller Interface (SDHCI)
 224           often referrered to as the HSMMC block in some of the ST SPEAR range
 225           of SoC
 226
 227           If you have a controller with this interface, say Y or M here.
 228
 229           If unsure, say N.
 230
 231 config MMC_SDHCI_S3C_DMA
 232         bool "DMA support on S3C SDHCI"
 233         depends on MMC_SDHCI_S3C
 234         help
 235           Enable DMA support on the Samsung S3C SDHCI glue. The DMA
 236           has proved to be problematic if the controller encounters
 237           certain errors, and thus should be treated with care.
 238
 239           YMMV.
 240
 241 config MMC_SDHCI_BCM2835
 242         tristate "SDHCI platform support for the BCM2835 SD/MMC Controller"
 243         depends on ARCH_BCM2835
 244         depends on MMC_SDHCI_PLTFM
 245         select MMC_SDHCI_IO_ACCESSORS
 246         help
 247           This selects the BCM2835 SD/MMC controller. If you have a BCM2835
 248           platform with SD or MMC devices, say Y or M here.
 249
 250           If unsure, say N.
 251
 252 config MMC_OMAP
 253         tristate "TI OMAP Multimedia Card Interface support"
 254         depends on ARCH_OMAP
 255         select TPS65010 if MACH_OMAP_H2
 256         help
 257           This selects the TI OMAP Multimedia card Interface.
 258           If you have an OMAP board with a Multimedia Card slot,
 259           say Y or M here.
 260
 261           If unsure, say N.
 262
 263 config MMC_OMAP_HS
 264         tristate "TI OMAP High Speed Multimedia Card Interface support"
 265         depends on SOC_OMAP2430 || ARCH_OMAP3 || ARCH_OMAP4
 266         help
 267           This selects the TI OMAP High Speed Multimedia card Interface.
 268           If you have an OMAP2430 or OMAP3 board or OMAP4 board with a
 269           Multimedia Card slot, say Y or M here.
 270
 271           If unsure, say N.
 272
 273 config MMC_WBSD
 274         tristate "Winbond W83L51xD SD/MMC Card Interface support"
 275         depends on ISA_DMA_API
 276         help
 277           This selects the Winbond(R) W83L51xD Secure digital and
 278           Multimedia card Interface.
 279           If you have a machine with a integrated W83L518D or W83L519D
 280           SD/MMC card reader, say Y or M here.
 281
 282           If unsure, say N.
 283
 284 config MMC_AU1X
 285         tristate "Alchemy AU1XX0 MMC Card Interface support"
 286         depends on MIPS_ALCHEMY
 287         help
 288           This selects the AMD Alchemy(R) Multimedia card interface.
 289           If you have a Alchemy platform with a MMC slot, say Y or M here.
 290
 291           If unsure, say N.
 292
 293 config MMC_ATMELMCI
 294         tristate "Atmel SD/MMC Driver (Multimedia Card Interface)"
 295         depends on AVR32 || ARCH_AT91
 296         help
 297           This selects the Atmel Multimedia Card Interface driver. If
 298           you have an AT32 (AVR32) or AT91 platform with a Multimedia
 299           Card slot, say Y or M here.
 300
 301           If unsure, say N.
 302
 303 config MMC_ATMELMCI_DMA
 304         bool "Atmel MCI DMA support"
 305         depends on MMC_ATMELMCI && (AVR32 || ARCH_AT91SAM9G45) && DMA_ENGINE
 306         help
 307           Say Y here to have the Atmel MCI driver use a DMA engine to
 308           do data transfers and thus increase the throughput and
 309           reduce the CPU utilization.
 310
 311           If unsure, say N.
 312
 313 config MMC_MSM
 314         tristate "Qualcomm SDCC Controller Support"
 315         depends on MMC && ARCH_MSM
 316         help
 317           This provides support for the SD/MMC cell found in the
 318           MSM and QSD SOCs from Qualcomm. The controller also has
 319           support for SDIO devices.
 320
 321 config MMC_MXC
 322         tristate "Freescale i.MX21/27/31 Multimedia Card Interface support"
 323         depends on ARCH_MXC
 324         help
 325           This selects the Freescale i.MX21, i.MX27 and i.MX31 Multimedia card
 326           Interface. If you have a i.MX platform with a Multimedia Card slot,
 327           say Y or M here.
 328
 329           If unsure, say N.
 330
 331 config MMC_MXS
 332         tristate "Freescale MXS Multimedia Card Interface support"
 333         depends on ARCH_MXS && MXS_DMA
 334         help
 335           This selects the Freescale SSP MMC controller found on MXS based
 336           platforms like mx23/28.
 337
 338           If unsure, say N.
 339
 340 config MMC_TIFM_SD
 341         tristate "TI Flash Media MMC/SD Interface support"
 342         depends on PCI
 343         select TIFM_CORE
 344         help
 345           Say Y here if you want to be able to access MMC/SD cards with
 346           the Texas Instruments(R) Flash Media card reader, found in many
 347           laptops.
 348           This option 'selects' (turns on, enables) 'TIFM_CORE', but you
 349           probably also need appropriate card reader host adapter, such as
 350           'Misc devices: TI Flash Media PCI74xx/PCI76xx host adapter support
 351           (TIFM_7XX1)'.
 352
 353           To compile this driver as a module, choose M here: the
 354           module will be called tifm_sd.
 355
 356 config MMC_MVSDIO
 357         tristate "Marvell MMC/SD/SDIO host driver"
 358         depends on PLAT_ORION
 359         ---help---
 360           This selects the Marvell SDIO host driver.
 361           SDIO may currently be found on the Kirkwood 88F6281 and 88F6192
 362           SoC controllers.
 363
 364           To compile this driver as a module, choose M here: the
 365           module will be called mvsdio.
 366
 367 config MMC_DAVINCI
 368         tristate "TI DAVINCI Multimedia Card Interface support"
 369         depends on ARCH_DAVINCI
 370         help
 371           This selects the TI DAVINCI Multimedia card Interface.
 372           If you have an DAVINCI board with a Multimedia Card slot,
 373           say Y or M here.  If unsure, say N.
 374
 375 config MMC_GOLDFISH
 376         tristate "goldfish qemu Multimedia Card Interface support"
 377         depends on GOLDFISH
 378         help
 379           This selects the Goldfish Multimedia card Interface emulation
 380           found on the Goldfish Android virtual device emulation.
 381
 382 config MMC_SPI
 383         tristate "MMC/SD/SDIO over SPI"
 384         depends on SPI_MASTER && !HIGHMEM && HAS_DMA
 385         select CRC7
 386         select CRC_ITU_T
 387         help
 388           Some systems access MMC/SD/SDIO cards using a SPI controller
 389           instead of using a "native" MMC/SD/SDIO controller.  This has a
 390           disadvantage of being relatively high overhead, but a compensating
 391           advantage of working on many systems without dedicated MMC/SD/SDIO
 392           controllers.
 393
 394           If unsure, or if your system has no SPI master driver, say N.
 395
 396 config MMC_S3C
 397         tristate "Samsung S3C SD/MMC Card Interface support"
 398         depends on ARCH_S3C24XX
 399         help
 400           This selects a driver for the MCI interface found in
 401           Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.
 402           If you have a board based on one of those and a MMC/SD
 403           slot, say Y or M here.
 404
 405           If unsure, say N.
 406
 407 config MMC_S3C_HW_SDIO_IRQ
 408        bool "Hardware support for SDIO IRQ"
 409        depends on MMC_S3C
 410        help
 411          Enable the hardware support for SDIO interrupts instead of using
 412          the generic polling code.
 413
 414 choice
 415         prompt "Samsung S3C SD/MMC transfer code"
 416         depends on MMC_S3C
 417
 418 config MMC_S3C_PIO
 419         bool "Use PIO transfers only"
 420         help
 421           Use PIO to transfer data between memory and the hardware.
 422
 423           PIO is slower than DMA as it requires CPU instructions to
 424           move the data. This has been the traditional default for
 425           the S3C MCI driver.
 426
 427 config MMC_S3C_DMA
 428         bool "Use DMA transfers only"
 429         help
 430           Use DMA to transfer data between memory and the hardare.
 431
 432           Currently, the DMA support in this driver seems to not be
 433           working properly and needs to be debugged before this
 434           option is useful.
 435
 436 config MMC_S3C_PIODMA
 437         bool "Support for both PIO and DMA"
 438         help
 439           Compile both the PIO and DMA transfer routines into the
 440           driver and let the platform select at run-time which one
 441           is best.
 442
 443           See notes for the DMA option.
 444
 445 endchoice
 446
 447 config MMC_SDRICOH_CS
 448         tristate "MMC/SD driver for Ricoh Bay1Controllers"
 449         depends on PCI && PCMCIA
 450         help
 451           Say Y here if your Notebook reports a Ricoh Bay1Controller PCMCIA
 452           card whenever you insert a MMC or SD card into the card slot.
 453
 454           To compile this driver as a module, choose M here: the
 455           module will be called sdricoh_cs.
 456
 457 config MMC_TMIO_CORE
 458         tristate
 459
 460 config MMC_TMIO
 461         tristate "Toshiba Mobile IO Controller (TMIO) MMC/SD function support"
 462         depends on MFD_TMIO || MFD_ASIC3
 463         select MMC_TMIO_CORE
 464         help
 465           This provides support for the SD/MMC cell found in TC6393XB,
 466           T7L66XB and also HTC ASIC3
 467
 468 config MMC_SDHI
 469         tristate "SH-Mobile SDHI SD/SDIO controller support"
 470         depends on SUPERH || ARCH_SHMOBILE
 471         select MMC_TMIO_CORE
 472         help
 473           This provides support for the SDHI SD/SDIO controller found in
 474           SuperH and ARM SH-Mobile SoCs
 475
 476 config MMC_CB710
 477         tristate "ENE CB710 MMC/SD Interface support"
 478         depends on PCI && GENERIC_HARDIRQS
 479         select CB710_CORE
 480         help
 481           This option enables support for MMC/SD part of ENE CB710/720 Flash
 482           memory card reader found in some laptops (ie. some versions of
 483           HP Compaq nx9500).
 484
 485           This driver can also be built as a module. If so, the module
 486           will be called cb710-mmc.
 487
 488 config MMC_VIA_SDMMC
 489         tristate "VIA SD/MMC Card Reader Driver"
 490         depends on PCI
 491         help
 492           This selects the VIA SD/MMC Card Reader driver, say Y or M here.
 493           VIA provides one multi-functional card reader which integrated into
 494           some motherboards manufactured by VIA. This card reader supports
 495           SD/MMC/SDHC.
 496           If you have a controller with this interface, say Y or M here.
 497
 498           If unsure, say N.
 499
 500 config SDH_BFIN
 501         tristate "Blackfin Secure Digital Host support"
 502         depends on (BF54x && !BF544) || (BF51x && !BF512)
 503         help
 504           If you say yes here you will get support for the Blackfin on-chip
 505           Secure Digital Host interface.  This includes support for MMC and
 506           SD cards.
 507
 508           To compile this driver as a module, choose M here: the
 509           module will be called bfin_sdh.
 510
 511           If unsure, say N.
 512
 513 config SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND
 514         bool "Blackfin EZkit Missing SDH_CMD Pull Up Resistor Workaround"
 515         depends on SDH_BFIN
 516         help
 517           If you say yes here SD-Cards may work on the EZkit.
 518
 519 config MMC_DW
 520         tristate "Synopsys DesignWare Memory Card Interface"
 521         depends on ARM
 522         help
 523           This selects support for the Synopsys DesignWare Mobile Storage IP
 524           block, this provides host support for SD and MMC interfaces, in both
 525           PIO and external DMA modes.
 526
 527 config MMC_DW_IDMAC
 528         bool "Internal DMAC interface"
 529         depends on MMC_DW
 530         help
 531           This selects support for the internal DMAC block within the Synopsys
 532           Designware Mobile Storage IP block. This disables the external DMA
 533           interface.
 534
 535 config MMC_DW_PLTFM
 536         tristate "Synopsys Designware MCI Support as platform device"
 537         depends on MMC_DW
 538         default y
 539         help
 540           This selects the common helper functions support for Host Controller
 541           Interface based platform driver. Please select this option if the IP
 542           is present as a platform device. This is the common interface for the
 543           Synopsys Designware IP.
 544
 545           If you have a controller with this interface, say Y or M here.
 546
 547           If unsure, say Y.
 548
 549 config MMC_DW_EXYNOS
 550         tristate "Exynos specific extensions for Synopsys DW Memory Card Interface"
 551         depends on MMC_DW
 552         select MMC_DW_PLTFM
 553         help
 554           This selects support for Samsung Exynos SoC specific extensions to the
 555           Synopsys DesignWare Memory Card Interface driver. Select this option
 556           for platforms based on Exynos4 and Exynos5 SoC's.
 557
 558 config MMC_DW_PCI
 559         tristate "Synopsys Designware MCI support on PCI bus"
 560         depends on MMC_DW && PCI
 561         help
 562           This selects the PCI bus for the Synopsys Designware Mobile Storage IP.
 563           Select this option if the IP is present on PCI platform.
 564
 565           If you have a controller with this interface, say Y or M here.
 566
 567           If unsure, say N.
 568
 569 config MMC_SH_MMCIF
 570         tristate "SuperH Internal MMCIF support"
 571         depends on MMC_BLOCK && (SUPERH || ARCH_SHMOBILE)
 572         help
 573           This selects the MMC Host Interface controller (MMCIF).
 574
 575           This driver supports MMCIF in sh7724/sh7757/sh7372.
 576
 577 config MMC_JZ4740
 578         tristate "JZ4740 SD/Multimedia Card Interface support"
 579         depends on MACH_JZ4740
 580         help
 581           This selects support for the SD/MMC controller on Ingenic JZ4740
 582           SoCs.
 583           If you have a board based on such a SoC and with a SD/MMC slot,
 584           say Y or M here.
 585
 586 config MMC_VUB300
 587         tristate "VUB300 USB to SDIO/SD/MMC Host Controller support"
 588         depends on USB
 589         help
 590           This selects support for Elan Digital Systems' VUB300 chip.
 591
 592           The VUB300 is a USB-SDIO Host Controller Interface chip
 593           that enables the host computer to use SDIO/SD/MMC cards
 594           via a USB 2.0 or USB 1.1 host.
 595
 596           The VUB300 chip will be found in both physically separate
 597           USB to SDIO/SD/MMC adapters and embedded on some motherboards.
 598
 599           The VUB300 chip supports SD and MMC memory cards in addition
 600           to single and multifunction SDIO cards.
 601
 602           Some SDIO cards will need a firmware file to be loaded and
 603           sent to VUB300 chip in order to achieve better data throughput.
 604           Download these "Offload Pseudocode" from Elan Digital Systems'
 605           web-site http://www.elandigitalsystems.com/support/downloads.php
 606           and put them in /lib/firmware. Note that without these additional
 607           firmware files the VUB300 chip will still function, but not at
 608           the best obtainable data rate.
 609
 610           To compile this mmc host controller driver as a module,
 611           choose M here: the module will be called vub300.
 612
 613           If you have a computer with an embedded VUB300 chip
 614           or if you intend connecting a USB adapter based on a
 615           VUB300 chip say Y or M here.
 616
 617 config MMC_USHC
 618         tristate "USB SD Host Controller (USHC) support"
 619         depends on USB
 620         help
 621           This selects support for USB SD Host Controllers based on
 622           the Cypress Astoria chip with firmware compliant with CSR's
 623           USB SD Host Controller specification (CS-118793-SP).
 624
 625           CSR boards with this device include: USB<>SDIO (M1985v2),
 626           and Ultrasira.
 627
 628           Note: These controllers only support SDIO cards and do not
 629           support MMC or SD memory cards.
 630
 631 config MMC_WMT
 632         tristate "Wondermedia SD/MMC Host Controller support"
 633         depends on ARCH_VT8500
 634         default y
 635         help
 636           This selects support for the SD/MMC Host Controller on
 637           Wondermedia WM8505/WM8650 based SoCs.
 638
 639           To compile this driver as a module, choose M here: the
 640           module will be called wmt-sdmmc.
 641
 642 config MMC_REALTEK_PCI
 643         tristate "Realtek PCI-E SD/MMC Card Interface Driver"
 644         depends on MFD_RTSX_PCI
 645         help
 646           Say Y here to include driver code to support SD/MMC card interface
 647           of Realtek PCI-E card reader