1# 2# SPI driver configuration 3# 4# NOTE: the reason this doesn't show SPI slave support is mostly that 5# nobody's needed a slave side API yet. The master-role API is not 6# fully appropriate there, so it'd need some thought to do well. 7# 8menuconfig SPI 9 bool "SPI support" 10 depends on HAS_IOMEM 11 help 12 The "Serial Peripheral Interface" is a low level synchronous 13 protocol. Chips that support SPI can have data transfer rates 14 up to several tens of Mbit/sec. Chips are addressed with a 15 controller and a chipselect. Most SPI slaves don't support 16 dynamic device discovery; some are even write-only or read-only. 17 18 SPI is widely used by microcontrollers to talk with sensors, 19 eeprom and flash memory, codecs and various other controller 20 chips, analog to digital (and d-to-a) converters, and more. 21 MMC and SD cards can be accessed using SPI protocol; and for 22 DataFlash cards used in MMC sockets, SPI must always be used. 23 24 SPI is one of a family of similar protocols using a four wire 25 interface (select, clock, data in, data out) including Microwire 26 (half duplex), SSP, SSI, and PSP. This driver framework should 27 work with most such devices and controllers. 28 29if SPI 30 31config SPI_DEBUG 32 boolean "Debug support for SPI drivers" 33 depends on DEBUG_KERNEL 34 help 35 Say "yes" to enable debug messaging (like dev_dbg and pr_debug), 36 sysfs, and debugfs support in SPI controller and protocol drivers. 37 38# 39# MASTER side ... talking to discrete SPI slave chips including microcontrollers 40# 41 42config SPI_MASTER 43# boolean "SPI Master Support" 44 boolean 45 default SPI 46 help 47 If your system has an master-capable SPI controller (which 48 provides the clock and chipselect), you can enable that 49 controller and the protocol drivers for the SPI slave chips 50 that are connected. 51 52if SPI_MASTER 53 54comment "SPI Master Controller Drivers" 55 56config SPI_ATMEL 57 tristate "Atmel SPI Controller" 58 depends on (ARCH_AT91 || AVR32) 59 help 60 This selects a driver for the Atmel SPI Controller, present on 61 many AT32 (AVR32) and AT91 (ARM) chips. 62 63config SPI_BFIN 64 tristate "SPI controller driver for ADI Blackfin5xx" 65 depends on BLACKFIN 66 help 67 This is the SPI controller master driver for Blackfin 5xx processor. 68 69config SPI_AU1550 70 tristate "Au1550/Au12x0 SPI Controller" 71 depends on (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL 72 select SPI_BITBANG 73 help 74 If you say yes to this option, support will be included for the 75 Au1550 SPI controller (may also work with Au1200,Au1210,Au1250). 76 77 This driver can also be built as a module. If so, the module 78 will be called au1550_spi. 79 80config SPI_BITBANG 81 tristate "Utilities for Bitbanging SPI masters" 82 help 83 With a few GPIO pins, your system can bitbang the SPI protocol. 84 Select this to get SPI support through I/O pins (GPIO, parallel 85 port, etc). Or, some systems' SPI master controller drivers use 86 this code to manage the per-word or per-transfer accesses to the 87 hardware shift registers. 88 89 This is library code, and is automatically selected by drivers that 90 need it. You only need to select this explicitly to support driver 91 modules that aren't part of this kernel tree. 92 93config SPI_BUTTERFLY 94 tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)" 95 depends on PARPORT 96 select SPI_BITBANG 97 help 98 This uses a custom parallel port cable to connect to an AVR 99 Butterfly <http://www.atmel.com/products/avr/butterfly>, an 100 inexpensive battery powered microcontroller evaluation board. 101 This same cable can be used to flash new firmware. 102 103config SPI_COLDFIRE_QSPI 104 tristate "Freescale Coldfire QSPI controller" 105 depends on (M520x || M523x || M5249 || M527x || M528x || M532x) 106 help 107 This enables support for the Coldfire QSPI controller in master 108 mode. 109 110 This driver can also be built as a module. If so, the module 111 will be called coldfire_qspi. 112 113config SPI_DAVINCI 114 tristate "SPI controller driver for DaVinci/DA8xx SoC's" 115 depends on SPI_MASTER && ARCH_DAVINCI 116 select SPI_BITBANG 117 help 118 SPI master controller for DaVinci and DA8xx SPI modules. 119 120config SPI_GPIO 121 tristate "GPIO-based bitbanging SPI Master" 122 depends on GENERIC_GPIO 123 select SPI_BITBANG 124 help 125 This simple GPIO bitbanging SPI master uses the arch-neutral GPIO 126 interface to manage MOSI, MISO, SCK, and chipselect signals. SPI 127 slaves connected to a bus using this driver are configured as usual, 128 except that the spi_board_info.controller_data holds the GPIO number 129 for the chipselect used by this controller driver. 130 131 Note that this driver often won't achieve even 1 Mbit/sec speeds, 132 making it unusually slow for SPI. If your platform can inline 133 GPIO operations, you should be able to leverage that for better 134 speed with a custom version of this driver; see the source code. 135 136config SPI_IMX 137 tristate "Freescale i.MX SPI controllers" 138 depends on ARCH_MXC 139 select SPI_BITBANG 140 help 141 This enables using the Freescale i.MX SPI controllers in master 142 mode. 143 144config SPI_LM70_LLP 145 tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)" 146 depends on PARPORT && EXPERIMENTAL 147 select SPI_BITBANG 148 help 149 This driver supports the NS LM70 LLP Evaluation Board, 150 which interfaces to an LM70 temperature sensor using 151 a parallel port. 152 153config SPI_MPC52xx 154 tristate "Freescale MPC52xx SPI (non-PSC) controller support" 155 depends on PPC_MPC52xx && SPI 156 select SPI_MASTER_OF 157 help 158 This drivers supports the MPC52xx SPI controller in master SPI 159 mode. 160 161config SPI_MPC52xx_PSC 162 tristate "Freescale MPC52xx PSC SPI controller" 163 depends on PPC_MPC52xx && EXPERIMENTAL 164 help 165 This enables using the Freescale MPC52xx Programmable Serial 166 Controller in master SPI mode. 167 168config SPI_MPC8xxx 169 tristate "Freescale MPC8xxx SPI controller" 170 depends on FSL_SOC 171 help 172 This enables using the Freescale MPC8xxx SPI controllers in master 173 mode. 174 175config SPI_OMAP_UWIRE 176 tristate "OMAP1 MicroWire" 177 depends on ARCH_OMAP1 178 select SPI_BITBANG 179 help 180 This hooks up to the MicroWire controller on OMAP1 chips. 181 182config SPI_OMAP24XX 183 tristate "McSPI driver for OMAP" 184 depends on ARCH_OMAP2PLUS 185 help 186 SPI master controller for OMAP24XX and later Multichannel SPI 187 (McSPI) modules. 188 189config SPI_OMAP_100K 190 tristate "OMAP SPI 100K" 191 depends on SPI_MASTER && (ARCH_OMAP850 || ARCH_OMAP730) 192 help 193 OMAP SPI 100K master controller for omap7xx boards. 194 195config SPI_ORION 196 tristate "Orion SPI master (EXPERIMENTAL)" 197 depends on PLAT_ORION && EXPERIMENTAL 198 help 199 This enables using the SPI master controller on the Orion chips. 200 201config SPI_PL022 202 tristate "ARM AMBA PL022 SSP controller (EXPERIMENTAL)" 203 depends on ARM_AMBA && EXPERIMENTAL 204 default y if MACH_U300 205 default y if ARCH_REALVIEW 206 default y if INTEGRATOR_IMPD1 207 default y if ARCH_VERSATILE 208 help 209 This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP 210 controller. If you have an embedded system with an AMBA(R) 211 bus and a PL022 controller, say Y or M here. 212 213config SPI_PPC4xx 214 tristate "PPC4xx SPI Controller" 215 depends on PPC32 && 4xx && SPI_MASTER 216 select SPI_BITBANG 217 help 218 This selects a driver for the PPC4xx SPI Controller. 219 220config SPI_PXA2XX 221 tristate "PXA2xx SSP SPI master" 222 depends on ARCH_PXA && EXPERIMENTAL 223 select PXA_SSP 224 help 225 This enables using a PXA2xx SSP port as a SPI master controller. 226 The driver can be configured to use any SSP port and additional 227 documentation can be found a Documentation/spi/pxa2xx. 228 229config SPI_S3C24XX 230 tristate "Samsung S3C24XX series SPI" 231 depends on ARCH_S3C2410 && EXPERIMENTAL 232 select SPI_BITBANG 233 help 234 SPI driver for Samsung S3C24XX series ARM SoCs 235 236config SPI_S3C24XX_FIQ 237 bool "S3C24XX driver with FIQ pseudo-DMA" 238 depends on SPI_S3C24XX 239 select FIQ 240 help 241 Enable FIQ support for the S3C24XX SPI driver to provide pseudo 242 DMA by using the fast-interrupt request framework, This allows 243 the driver to get DMA-like performance when there are either 244 no free DMA channels, or when doing transfers that required both 245 TX and RX data paths. 246 247config SPI_S3C24XX_GPIO 248 tristate "Samsung S3C24XX series SPI by GPIO" 249 depends on ARCH_S3C2410 && EXPERIMENTAL 250 select SPI_BITBANG 251 help 252 SPI driver for Samsung S3C24XX series ARM SoCs using 253 GPIO lines to provide the SPI bus. This can be used where 254 the inbuilt hardware cannot provide the transfer mode, or 255 where the board is using non hardware connected pins. 256 257config SPI_S3C64XX 258 tristate "Samsung S3C64XX series type SPI" 259 depends on ARCH_S3C64XX && EXPERIMENTAL 260 select S3C64XX_DMA 261 help 262 SPI driver for Samsung S3C64XX and newer SoCs. 263 264config SPI_SH_MSIOF 265 tristate "SuperH MSIOF SPI controller" 266 depends on SUPERH && HAVE_CLK 267 select SPI_BITBANG 268 help 269 SPI driver for SuperH MSIOF blocks. 270 271config SPI_SH_SCI 272 tristate "SuperH SCI SPI controller" 273 depends on SUPERH 274 select SPI_BITBANG 275 help 276 SPI driver for SuperH SCI blocks. 277 278config SPI_STMP3XXX 279 tristate "Freescale STMP37xx/378x SPI/SSP controller" 280 depends on ARCH_STMP3XXX && SPI_MASTER 281 help 282 SPI driver for Freescale STMP37xx/378x SoC SSP interface 283 284config SPI_TXX9 285 tristate "Toshiba TXx9 SPI controller" 286 depends on GENERIC_GPIO && CPU_TX49XX 287 help 288 SPI driver for Toshiba TXx9 MIPS SoCs 289 290config SPI_XILINX 291 tristate "Xilinx SPI controller common module" 292 depends on HAS_IOMEM && EXPERIMENTAL 293 select SPI_BITBANG 294 select SPI_XILINX_OF if (XILINX_VIRTEX || MICROBLAZE) 295 help 296 This exposes the SPI controller IP from the Xilinx EDK. 297 298 See the "OPB Serial Peripheral Interface (SPI) (v1.00e)" 299 Product Specification document (DS464) for hardware details. 300 301 Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)" 302 303config SPI_XILINX_OF 304 tristate "Xilinx SPI controller OF device" 305 depends on SPI_XILINX && (XILINX_VIRTEX || MICROBLAZE) 306 help 307 This is the OF driver for the SPI controller IP from the Xilinx EDK. 308 309config SPI_XILINX_PLTFM 310 tristate "Xilinx SPI controller platform device" 311 depends on SPI_XILINX 312 help 313 This is the platform driver for the SPI controller IP 314 from the Xilinx EDK. 315 316config SPI_NUC900 317 tristate "Nuvoton NUC900 series SPI" 318 depends on ARCH_W90X900 && EXPERIMENTAL 319 select SPI_BITBANG 320 help 321 SPI driver for Nuvoton NUC900 series ARM SoCs 322 323# 324# Add new SPI master controllers in alphabetical order above this line 325# 326 327config SPI_DESIGNWARE 328 tristate "DesignWare SPI controller core support" 329 depends on SPI_MASTER 330 help 331 general driver for SPI controller core from DesignWare 332 333config SPI_DW_PCI 334 tristate "PCI interface driver for DW SPI core" 335 depends on SPI_DESIGNWARE && PCI 336 337config SPI_DW_MMIO 338 tristate "Memory-mapped io interface driver for DW SPI core" 339 depends on SPI_DESIGNWARE && HAVE_CLK 340 341# 342# There are lots of SPI device types, with sensors and memory 343# being probably the most widely used ones. 344# 345comment "SPI Protocol Masters" 346 347config SPI_SPIDEV 348 tristate "User mode SPI device driver support" 349 depends on EXPERIMENTAL 350 help 351 This supports user mode SPI protocol drivers. 352 353 Note that this application programming interface is EXPERIMENTAL 354 and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes. 355 356config SPI_TLE62X0 357 tristate "Infineon TLE62X0 (for power switching)" 358 depends on SYSFS 359 help 360 SPI driver for Infineon TLE62X0 series line driver chips, 361 such as the TLE6220, TLE6230 and TLE6240. This provides a 362 sysfs interface, with each line presented as a kind of GPIO 363 exposing both switch control and diagnostic feedback. 364 365# 366# Add new SPI protocol masters in alphabetical order above this line 367# 368 369endif # SPI_MASTER 370 371# (slave support would go here) 372 373endif # SPI 374