drivers/dma/Kconfig

   1 #
   2 # DMA engine configuration
   3 #
   4
   5 menuconfig DMADEVICES
   6         bool "DMA Engine support"
   7         depends on HAS_DMA
   8         help
   9           DMA engines can do asynchronous data transfers without
  10           involving the host CPU.  Currently, this framework can be
  11           used to offload memory copies in the network stack and
  12           RAID operations in the MD driver.  This menu only presents
  13           DMA Device drivers supported by the configured arch, it may
  14           be empty in some cases.
  15
  16 config DMADEVICES_DEBUG
  17         bool "DMA Engine debugging"
  18         depends on DMADEVICES != n
  19         help
  20           This is an option for use by developers; most people should
  21           say N here.  This enables DMA engine core and driver debugging.
  22
  23 config DMADEVICES_VDEBUG
  24         bool "DMA Engine verbose debugging"
  25         depends on DMADEVICES_DEBUG != n
  26         help
  27           This is an option for use by developers; most people should
  28           say N here.  This enables deeper (more verbose) debugging of
  29           the DMA engine core and drivers.
  30
  31
  32 if DMADEVICES
  33
  34 comment "DMA Devices"
  35
  36 #core
  37 config ASYNC_TX_ENABLE_CHANNEL_SWITCH
  38         bool
  39
  40 config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
  41         bool
  42
  43 config DMA_ENGINE
  44         bool
  45
  46 config DMA_VIRTUAL_CHANNELS
  47         tristate
  48
  49 config DMA_ACPI
  50         def_bool y
  51         depends on ACPI
  52
  53 config DMA_OF
  54         def_bool y
  55         depends on OF
  56         select DMA_ENGINE
  57
  58 #devices
  59 config ALTERA_MSGDMA
  60         tristate "Altera / Intel mSGDMA Engine"
  61         select DMA_ENGINE
  62         help
  63           Enable support for Altera / Intel mSGDMA controller.
  64
  65 config AMBA_PL08X
  66         bool "ARM PrimeCell PL080 or PL081 support"
  67         depends on ARM_AMBA
  68         select DMA_ENGINE
  69         select DMA_VIRTUAL_CHANNELS
  70         help
  71           Say yes if your platform has a PL08x DMAC device which can
  72           provide DMA engine support. This includes the original ARM
  73           PL080 and PL081, Samsungs PL080 derivative and Faraday
  74           Technology's FTDMAC020 PL080 derivative.
  75
  76 config AMCC_PPC440SPE_ADMA
  77         tristate "AMCC PPC440SPe ADMA support"
  78         depends on 440SPe || 440SP
  79         select DMA_ENGINE
  80         select DMA_ENGINE_RAID
  81         select ARCH_HAS_ASYNC_TX_FIND_CHANNEL
  82         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
  83         help
  84           Enable support for the AMCC PPC440SPe RAID engines.
  85
  86 config AT_HDMAC
  87         tristate "Atmel AHB DMA support"
  88         depends on ARCH_AT91
  89         select DMA_ENGINE
  90         help
  91           Support the Atmel AHB DMA controller.
  92
  93 config AT_XDMAC
  94         tristate "Atmel XDMA support"
  95         depends on ARCH_AT91
  96         select DMA_ENGINE
  97         help
  98           Support the Atmel XDMA controller.
  99
 100 config AXI_DMAC
 101         tristate "Analog Devices AXI-DMAC DMA support"
 102         depends on MICROBLAZE || NIOS2 || ARCH_ZYNQ || ARCH_SOCFPGA || COMPILE_TEST
 103         select DMA_ENGINE
 104         select DMA_VIRTUAL_CHANNELS
 105         help
 106           Enable support for the Analog Devices AXI-DMAC peripheral. This DMA
 107           controller is often used in Analog Device's reference designs for FPGA
 108           platforms.
 109
 110 config BCM_SBA_RAID
 111         tristate "Broadcom SBA RAID engine support"
 112         depends on ARM64 || COMPILE_TEST
 113         depends on MAILBOX && RAID6_PQ
 114         select DMA_ENGINE
 115         select DMA_ENGINE_RAID
 116         select ASYNC_TX_DISABLE_XOR_VAL_DMA
 117         select ASYNC_TX_DISABLE_PQ_VAL_DMA
 118         default m if ARCH_BCM_IPROC
 119         help
 120           Enable support for Broadcom SBA RAID Engine. The SBA RAID
 121           engine is available on most of the Broadcom iProc SoCs. It
 122           has the capability to offload memcpy, xor and pq computation
 123           for raid5/6.
 124
 125 config COH901318
 126         bool "ST-Ericsson COH901318 DMA support"
 127         select DMA_ENGINE
 128         depends on ARCH_U300 || COMPILE_TEST
 129         help
 130           Enable support for ST-Ericsson COH 901 318 DMA.
 131
 132 config DMA_BCM2835
 133         tristate "BCM2835 DMA engine support"
 134         depends on ARCH_BCM2835
 135         select DMA_ENGINE
 136         select DMA_VIRTUAL_CHANNELS
 137
 138 config DMA_JZ4740
 139         tristate "JZ4740 DMA support"
 140         depends on MACH_JZ4740 || COMPILE_TEST
 141         select DMA_ENGINE
 142         select DMA_VIRTUAL_CHANNELS
 143
 144 config DMA_JZ4780
 145         tristate "JZ4780 DMA support"
 146         depends on MACH_JZ4780 || COMPILE_TEST
 147         select DMA_ENGINE
 148         select DMA_VIRTUAL_CHANNELS
 149         help
 150           This selects support for the DMA controller in Ingenic JZ4780 SoCs.
 151           If you have a board based on such a SoC and wish to use DMA for
 152           devices which can use the DMA controller, say Y or M here.
 153
 154 config DMA_OMAP
 155         tristate "OMAP DMA support"
 156         depends on ARCH_OMAP || COMPILE_TEST
 157         select DMA_ENGINE
 158         select DMA_VIRTUAL_CHANNELS
 159         select TI_DMA_CROSSBAR if (SOC_DRA7XX || COMPILE_TEST)
 160
 161 config DMA_SA11X0
 162         tristate "SA-11x0 DMA support"
 163         depends on ARCH_SA1100 || COMPILE_TEST
 164         select DMA_ENGINE
 165         select DMA_VIRTUAL_CHANNELS
 166         help
 167           Support the DMA engine found on Intel StrongARM SA-1100 and
 168           SA-1110 SoCs.  This DMA engine can only be used with on-chip
 169           devices.
 170
 171 config DMA_SUN4I
 172         tristate "Allwinner A10 DMA SoCs support"
 173         depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
 174         default (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I)
 175         select DMA_ENGINE
 176         select DMA_VIRTUAL_CHANNELS
 177         help
 178           Enable support for the DMA controller present in the sun4i,
 179           sun5i and sun7i Allwinner ARM SoCs.
 180
 181 config DMA_SUN6I
 182         tristate "Allwinner A31 SoCs DMA support"
 183         depends on MACH_SUN6I || MACH_SUN8I || (ARM64 && ARCH_SUNXI) || COMPILE_TEST
 184         depends on RESET_CONTROLLER
 185         select DMA_ENGINE
 186         select DMA_VIRTUAL_CHANNELS
 187         help
 188           Support for the DMA engine first found in Allwinner A31 SoCs.
 189
 190 config EP93XX_DMA
 191         bool "Cirrus Logic EP93xx DMA support"
 192         depends on ARCH_EP93XX || COMPILE_TEST
 193         select DMA_ENGINE
 194         help
 195           Enable support for the Cirrus Logic EP93xx M2P/M2M DMA controller.
 196
 197 config FSL_DMA
 198         tristate "Freescale Elo series DMA support"
 199         depends on FSL_SOC
 200         select DMA_ENGINE
 201         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
 202         ---help---
 203           Enable support for the Freescale Elo series DMA controllers.
 204           The Elo is the DMA controller on some mpc82xx and mpc83xx parts, the
 205           EloPlus is on mpc85xx and mpc86xx and Pxxx parts, and the Elo3 is on
 206           some Txxx and Bxxx parts.
 207
 208 config FSL_EDMA
 209         tristate "Freescale eDMA engine support"
 210         depends on OF
 211         select DMA_ENGINE
 212         select DMA_VIRTUAL_CHANNELS
 213         help
 214           Support the Freescale eDMA engine with programmable channel
 215           multiplexing capability for DMA request sources(slot).
 216           This module can be found on Freescale Vybrid and LS-1 SoCs.
 217
 218 config FSL_RAID
 219         tristate "Freescale RAID engine Support"
 220         depends on FSL_SOC && !ASYNC_TX_ENABLE_CHANNEL_SWITCH
 221         select DMA_ENGINE
 222         select DMA_ENGINE_RAID
 223         ---help---
 224           Enable support for Freescale RAID Engine. RAID Engine is
 225           available on some QorIQ SoCs (like P5020/P5040). It has
 226           the capability to offload memcpy, xor and pq computation
 227           for raid5/6.
 228
 229 config IMG_MDC_DMA
 230         tristate "IMG MDC support"
 231         depends on MIPS || COMPILE_TEST
 232         depends on MFD_SYSCON
 233         select DMA_ENGINE
 234         select DMA_VIRTUAL_CHANNELS
 235         help
 236           Enable support for the IMG multi-threaded DMA controller (MDC).
 237
 238 config IMX_DMA
 239         tristate "i.MX DMA support"
 240         depends on ARCH_MXC
 241         select DMA_ENGINE
 242         help
 243           Support the i.MX DMA engine. This engine is integrated into
 244           Freescale i.MX1/21/27 chips.
 245
 246 config IMX_SDMA
 247         tristate "i.MX SDMA support"
 248         depends on ARCH_MXC
 249         select DMA_ENGINE
 250         help
 251           Support the i.MX SDMA engine. This engine is integrated into
 252           Freescale i.MX25/31/35/51/53/6 chips.
 253
 254 config INTEL_IDMA64
 255         tristate "Intel integrated DMA 64-bit support"
 256         select DMA_ENGINE
 257         select DMA_VIRTUAL_CHANNELS
 258         help
 259           Enable DMA support for Intel Low Power Subsystem such as found on
 260           Intel Skylake PCH.
 261
 262 config INTEL_IOATDMA
 263         tristate "Intel I/OAT DMA support"
 264         depends on PCI && X86_64
 265         select DMA_ENGINE
 266         select DMA_ENGINE_RAID
 267         select DCA
 268         help
 269           Enable support for the Intel(R) I/OAT DMA engine present
 270           in recent Intel Xeon chipsets.
 271
 272           Say Y here if you have such a chipset.
 273
 274           If unsure, say N.
 275
 276 config INTEL_IOP_ADMA
 277         tristate "Intel IOP ADMA support"
 278         depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
 279         select DMA_ENGINE
 280         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
 281         help
 282           Enable support for the Intel(R) IOP Series RAID engines.
 283
 284 config INTEL_MIC_X100_DMA
 285         tristate "Intel MIC X100 DMA Driver"
 286         depends on 64BIT && X86 && INTEL_MIC_BUS
 287         select DMA_ENGINE
 288         help
 289           This enables DMA support for the Intel Many Integrated Core
 290           (MIC) family of PCIe form factor coprocessor X100 devices that
 291           run a 64 bit Linux OS. This driver will be used by both MIC
 292           host and card drivers.
 293
 294           If you are building host kernel with a MIC device or a card
 295           kernel for a MIC device, then say M (recommended) or Y, else
 296           say N. If unsure say N.
 297
 298           More information about the Intel MIC family as well as the Linux
 299           OS and tools for MIC to use with this driver are available from
 300           <http://software.intel.com/en-us/mic-developer>.
 301
 302 config K3_DMA
 303         tristate "Hisilicon K3 DMA support"
 304         depends on ARCH_HI3xxx || ARCH_HISI || COMPILE_TEST
 305         select DMA_ENGINE
 306         select DMA_VIRTUAL_CHANNELS
 307         help
 308           Support the DMA engine for Hisilicon K3 platform
 309           devices.
 310
 311 config LPC18XX_DMAMUX
 312         bool "NXP LPC18xx/43xx DMA MUX for PL080"
 313         depends on ARCH_LPC18XX || COMPILE_TEST
 314         depends on OF && AMBA_PL08X
 315         select MFD_SYSCON
 316         help
 317           Enable support for DMA on NXP LPC18xx/43xx platforms
 318           with PL080 and multiplexed DMA request lines.
 319
 320 config MMP_PDMA
 321         bool "MMP PDMA support"
 322         depends on ARCH_MMP || ARCH_PXA || COMPILE_TEST
 323         select DMA_ENGINE
 324         help
 325           Support the MMP PDMA engine for PXA and MMP platform.
 326
 327 config MMP_TDMA
 328         bool "MMP Two-Channel DMA support"
 329         depends on ARCH_MMP || COMPILE_TEST
 330         select DMA_ENGINE
 331         select MMP_SRAM if ARCH_MMP
 332         select GENERIC_ALLOCATOR
 333         help
 334           Support the MMP Two-Channel DMA engine.
 335           This engine used for MMP Audio DMA and pxa910 SQU.
 336           It needs sram driver under mach-mmp.
 337
 338 config MOXART_DMA
 339         tristate "MOXART DMA support"
 340         depends on ARCH_MOXART
 341         select DMA_ENGINE
 342         select DMA_VIRTUAL_CHANNELS
 343         help
 344           Enable support for the MOXA ART SoC DMA controller.
 345
 346           Say Y here if you enabled MMP ADMA, otherwise say N.
 347
 348 config MPC512X_DMA
 349         tristate "Freescale MPC512x built-in DMA engine support"
 350         depends on PPC_MPC512x || PPC_MPC831x
 351         select DMA_ENGINE
 352         ---help---
 353           Enable support for the Freescale MPC512x built-in DMA engine.
 354
 355 config MV_XOR
 356         bool "Marvell XOR engine support"
 357         depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
 358         select DMA_ENGINE
 359         select DMA_ENGINE_RAID
 360         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
 361         ---help---
 362           Enable support for the Marvell XOR engine.
 363
 364 config MV_XOR_V2
 365         bool "Marvell XOR engine version 2 support "
 366         depends on ARM64
 367         select DMA_ENGINE
 368         select DMA_ENGINE_RAID
 369         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
 370         select GENERIC_MSI_IRQ_DOMAIN
 371         ---help---
 372           Enable support for the Marvell version 2 XOR engine.
 373
 374           This engine provides acceleration for copy, XOR and RAID6
 375           operations, and is available on Marvell Armada 7K and 8K
 376           platforms.
 377
 378 config MXS_DMA
 379         bool "MXS DMA support"
 380         depends on ARCH_MXS || ARCH_MXC || COMPILE_TEST
 381         select STMP_DEVICE
 382         select DMA_ENGINE
 383         help
 384           Support the MXS DMA engine. This engine including APBH-DMA
 385           and APBX-DMA is integrated into some Freescale chips.
 386
 387 config MX3_IPU
 388         bool "MX3x Image Processing Unit support"
 389         depends on ARCH_MXC
 390         select DMA_ENGINE
 391         default y
 392         help
 393           If you plan to use the Image Processing unit in the i.MX3x, say
 394           Y here. If unsure, select Y.
 395
 396 config MX3_IPU_IRQS
 397         int "Number of dynamically mapped interrupts for IPU"
 398         depends on MX3_IPU
 399         range 2 137
 400         default 4
 401         help
 402           Out of 137 interrupt sources on i.MX31 IPU only very few are used.
 403           To avoid bloating the irq_desc[] array we allocate a sufficient
 404           number of IRQ slots and map them dynamically to specific sources.
 405
 406 config NBPFAXI_DMA
 407         tristate "Renesas Type-AXI NBPF DMA support"
 408         select DMA_ENGINE
 409         depends on ARM || COMPILE_TEST
 410         help
 411           Support for "Type-AXI" NBPF DMA IPs from Renesas
 412
 413 config PCH_DMA
 414         tristate "Intel EG20T PCH / LAPIS Semicon IOH(ML7213/ML7223/ML7831) DMA"
 415         depends on PCI && (X86_32 || COMPILE_TEST)
 416         select DMA_ENGINE
 417         help
 418           Enable support for Intel EG20T PCH DMA engine.
 419
 420           This driver also can be used for LAPIS Semiconductor IOH(Input/
 421           Output Hub), ML7213, ML7223 and ML7831.
 422           ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
 423           for MP(Media Phone) use and ML7831 IOH is for general purpose use.
 424           ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 425           ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 426
 427 config PL330_DMA
 428         tristate "DMA API Driver for PL330"
 429         select DMA_ENGINE
 430         depends on ARM_AMBA
 431         help
 432           Select if your platform has one or more PL330 DMACs.
 433           You need to provide platform specific settings via
 434           platform_data for a dma-pl330 device.
 435
 436 config PXA_DMA
 437         bool "PXA DMA support"
 438         depends on (ARCH_MMP || ARCH_PXA)
 439         select DMA_ENGINE
 440         select DMA_VIRTUAL_CHANNELS
 441         help
 442           Support the DMA engine for PXA. It is also compatible with MMP PDMA
 443           platform. The internal DMA IP of all PXA variants is supported, with
 444           16 to 32 channels for peripheral to memory or memory to memory
 445           transfers.
 446
 447 config SIRF_DMA
 448         tristate "CSR SiRFprimaII/SiRFmarco DMA support"
 449         depends on ARCH_SIRF
 450         select DMA_ENGINE
 451         help
 452           Enable support for the CSR SiRFprimaII DMA engine.
 453
 454 config STE_DMA40
 455         bool "ST-Ericsson DMA40 support"
 456         depends on ARCH_U8500
 457         select DMA_ENGINE
 458         help
 459           Support for ST-Ericsson DMA40 controller
 460
 461 config ST_FDMA
 462         tristate "ST FDMA dmaengine support"
 463         depends on ARCH_STI
 464         depends on REMOTEPROC
 465         select ST_SLIM_REMOTEPROC
 466         select DMA_ENGINE
 467         select DMA_VIRTUAL_CHANNELS
 468         help
 469           Enable support for ST FDMA controller.
 470           It supports 16 independent DMA channels, accepts up to 32 DMA requests
 471
 472           Say Y here if you have such a chipset.
 473           If unsure, say N.
 474
 475 config STM32_DMA
 476         bool "STMicroelectronics STM32 DMA support"
 477         depends on ARCH_STM32 || COMPILE_TEST
 478         select DMA_ENGINE
 479         select DMA_VIRTUAL_CHANNELS
 480         help
 481           Enable support for the on-chip DMA controller on STMicroelectronics
 482           STM32 MCUs.
 483           If you have a board based on such a MCU and wish to use DMA say Y
 484           here.
 485
 486 config STM32_DMAMUX
 487         bool "STMicroelectronics STM32 dma multiplexer support"
 488         depends on STM32_DMA || COMPILE_TEST
 489         help
 490           Enable support for the on-chip DMA multiplexer on STMicroelectronics
 491           STM32 MCUs.
 492           If you have a board based on such a MCU and wish to use DMAMUX say Y
 493           here.
 494
 495 config STM32_MDMA
 496         bool "STMicroelectronics STM32 master dma support"
 497         depends on ARCH_STM32 || COMPILE_TEST
 498         depends on OF
 499         select DMA_ENGINE
 500         select DMA_VIRTUAL_CHANNELS
 501         help
 502           Enable support for the on-chip MDMA controller on STMicroelectronics
 503           STM32 platforms.
 504           If you have a board based on STM32 SoC and wish to use the master DMA
 505           say Y here.
 506
 507 config SPRD_DMA
 508         tristate "Spreadtrum DMA support"
 509         depends on ARCH_SPRD || COMPILE_TEST
 510         select DMA_ENGINE
 511         select DMA_VIRTUAL_CHANNELS
 512         help
 513           Enable support for the on-chip DMA controller on Spreadtrum platform.
 514
 515 config S3C24XX_DMAC
 516         bool "Samsung S3C24XX DMA support"
 517         depends on ARCH_S3C24XX || COMPILE_TEST
 518         select DMA_ENGINE
 519         select DMA_VIRTUAL_CHANNELS
 520         help
 521           Support for the Samsung S3C24XX DMA controller driver. The
 522           DMA controller is having multiple DMA channels which can be
 523           configured for different peripherals like audio, UART, SPI.
 524           The DMA controller can transfer data from memory to peripheral,
 525           periphal to memory, periphal to periphal and memory to memory.
 526
 527 config TXX9_DMAC
 528         tristate "Toshiba TXx9 SoC DMA support"
 529         depends on MACH_TX49XX || MACH_TX39XX
 530         select DMA_ENGINE
 531         help
 532           Support the TXx9 SoC internal DMA controller.  This can be
 533           integrated in chips such as the Toshiba TX4927/38/39.
 534
 535 config TEGRA20_APB_DMA
 536         bool "NVIDIA Tegra20 APB DMA support"
 537         depends on ARCH_TEGRA
 538         select DMA_ENGINE
 539         help
 540           Support for the NVIDIA Tegra20 APB DMA controller driver. The
 541           DMA controller is having multiple DMA channel which can be
 542           configured for different peripherals like audio, UART, SPI,
 543           I2C etc which is in APB bus.
 544           This DMA controller transfers data from memory to peripheral fifo
 545           or vice versa. It does not support memory to memory data transfer.
 546
 547 config TEGRA210_ADMA
 548         tristate "NVIDIA Tegra210 ADMA support"
 549         depends on (ARCH_TEGRA_210_SOC || COMPILE_TEST) && PM_CLK
 550         select DMA_ENGINE
 551         select DMA_VIRTUAL_CHANNELS
 552         help
 553           Support for the NVIDIA Tegra210 ADMA controller driver. The
 554           DMA controller has multiple DMA channels and is used to service
 555           various audio clients in the Tegra210 audio processing engine
 556           (APE). This DMA controller transfers data from memory to
 557           peripheral and vice versa. It does not support memory to
 558           memory data transfer.
 559
 560 config TIMB_DMA
 561         tristate "Timberdale FPGA DMA support"
 562         depends on MFD_TIMBERDALE || COMPILE_TEST
 563         select DMA_ENGINE
 564         help
 565           Enable support for the Timberdale FPGA DMA engine.
 566
 567 config TI_CPPI41
 568         tristate "CPPI 4.1 DMA support"
 569         depends on (ARCH_OMAP || ARCH_DAVINCI_DA8XX)
 570         select DMA_ENGINE
 571         help
 572           The Communications Port Programming Interface (CPPI) 4.1 DMA engine
 573           is currently used by the USB driver on AM335x and DA8xx platforms.
 574
 575 config TI_DMA_CROSSBAR
 576         bool
 577
 578 config TI_EDMA
 579         bool "TI EDMA support"
 580         depends on ARCH_DAVINCI || ARCH_OMAP || ARCH_KEYSTONE || COMPILE_TEST
 581         select DMA_ENGINE
 582         select DMA_VIRTUAL_CHANNELS
 583         select TI_DMA_CROSSBAR if (ARCH_OMAP || COMPILE_TEST)
 584         default n
 585         help
 586           Enable support for the TI EDMA controller. This DMA
 587           engine is found on TI DaVinci and AM33xx parts.
 588
 589 config XGENE_DMA
 590         tristate "APM X-Gene DMA support"
 591         depends on ARCH_XGENE || COMPILE_TEST
 592         select DMA_ENGINE
 593         select DMA_ENGINE_RAID
 594         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
 595         help
 596           Enable support for the APM X-Gene SoC DMA engine.
 597
 598 config XILINX_DMA
 599         tristate "Xilinx AXI DMAS Engine"
 600         depends on (ARCH_ZYNQ || MICROBLAZE || ARM64)
 601         select DMA_ENGINE
 602         help
 603           Enable support for Xilinx AXI VDMA Soft IP.
 604
 605           AXI VDMA engine provides high-bandwidth direct memory access
 606           between memory and AXI4-Stream video type target
 607           peripherals including peripherals which support AXI4-
 608           Stream Video Protocol.  It has two stream interfaces/
 609           channels, Memory Mapped to Stream (MM2S) and Stream to
 610           Memory Mapped (S2MM) for the data transfers.
 611           AXI CDMA engine provides high-bandwidth direct memory access
 612           between a memory-mapped source address and a memory-mapped
 613           destination address.
 614           AXI DMA engine provides high-bandwidth one dimensional direct
 615           memory access between memory and AXI4-Stream target peripherals.
 616
 617 config XILINX_ZYNQMP_DMA
 618         tristate "Xilinx ZynqMP DMA Engine"
 619         depends on (ARCH_ZYNQ || MICROBLAZE || ARM64)
 620         select DMA_ENGINE
 621         help
 622           Enable support for Xilinx ZynqMP DMA controller.
 623
 624 config ZX_DMA
 625         tristate "ZTE ZX DMA support"
 626         depends on ARCH_ZX || COMPILE_TEST
 627         select DMA_ENGINE
 628         select DMA_VIRTUAL_CHANNELS
 629         help
 630           Support the DMA engine for ZTE ZX family platform devices.
 631
 632
 633 # driver files
 634 source "drivers/dma/bestcomm/Kconfig"
 635
 636 source "drivers/dma/qcom/Kconfig"
 637
 638 source "drivers/dma/dw/Kconfig"
 639
 640 source "drivers/dma/hsu/Kconfig"
 641
 642 source "drivers/dma/sh/Kconfig"
 643
 644 # clients
 645 comment "DMA Clients"
 646         depends on DMA_ENGINE
 647
 648 config ASYNC_TX_DMA
 649         bool "Async_tx: Offload support for the async_tx api"
 650         depends on DMA_ENGINE
 651         help
 652           This allows the async_tx api to take advantage of offload engines for
 653           memcpy, memset, xor, and raid6 p+q operations.  If your platform has
 654           a dma engine that can perform raid operations and you have enabled
 655           MD_RAID456 say Y.
 656
 657           If unsure, say N.
 658
 659 config DMATEST
 660         tristate "DMA Test client"
 661         depends on DMA_ENGINE
 662         select DMA_ENGINE_RAID
 663         help
 664           Simple DMA test client. Say N unless you're debugging a
 665           DMA Device driver.
 666
 667 config DMA_ENGINE_RAID
 668         bool
 669
 670 endif