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# 8menu "SPI support" 9 depends on HAS_IOMEM 10 11config SPI 12 bool "SPI support" 13 help 14 The "Serial Peripheral Interface" is a low level synchronous 15 protocol. Chips that support SPI can have data transfer rates 16 up to several tens of Mbit/sec. Chips are addressed with a 17 controller and a chipselect. Most SPI slaves don't support 18 dynamic device discovery; some are even write-only or read-only. 19 20 SPI is widely used by microcontrollers to talk with sensors, 21 eeprom and flash memory, codecs and various other controller 22 chips, analog to digital (and d-to-a) converters, and more. 23 MMC and SD cards can be accessed using SPI protocol; and for 24 DataFlash cards used in MMC sockets, SPI must always be used. 25 26 SPI is one of a family of similar protocols using a four wire 27 interface (select, clock, data in, data out) including Microwire 28 (half duplex), SSP, SSI, and PSP. This driver framework should 29 work with most such devices and controllers. 30 31config SPI_DEBUG 32 boolean "Debug support for SPI drivers" 33 depends on SPI && 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 52comment "SPI Master Controller Drivers" 53 depends on SPI_MASTER 54 55config SPI_ATMEL 56 tristate "Atmel SPI Controller" 57 depends on (ARCH_AT91 || AVR32) && SPI_MASTER 58 help 59 This selects a driver for the Atmel SPI Controller, present on 60 many AT32 (AVR32) and AT91 (ARM) chips. 61 62config SPI_BFIN 63 tristate "SPI controller driver for ADI Blackfin5xx" 64 depends on SPI_MASTER && BFIN 65 help 66 This is the SPI controller master driver for Blackfin 5xx processor. 67 68config SPI_AU1550 69 tristate "Au1550/Au12x0 SPI Controller" 70 depends on SPI_MASTER && (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL 71 select SPI_BITBANG 72 help 73 If you say yes to this option, support will be included for the 74 Au1550 SPI controller (may also work with Au1200,Au1210,Au1250). 75 76 This driver can also be built as a module. If so, the module 77 will be called au1550_spi. 78 79config SPI_BITBANG 80 tristate "Bitbanging SPI master" 81 depends on SPI_MASTER && EXPERIMENTAL 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 SPI_MASTER && PARPORT && EXPERIMENTAL 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_IMX 104 tristate "Freescale iMX SPI controller" 105 depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL 106 help 107 This enables using the Freescale iMX SPI controller in master 108 mode. 109 110config SPI_LM70_LLP 111 tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)" 112 depends on SPI_MASTER && PARPORT && EXPERIMENTAL 113 select SPI_BITBANG 114 help 115 This driver supports the NS LM70 LLP Evaluation Board, 116 which interfaces to an LM70 temperature sensor using 117 a parallel port. 118 119config SPI_MPC52xx_PSC 120 tristate "Freescale MPC52xx PSC SPI controller" 121 depends on SPI_MASTER && PPC_MPC52xx && EXPERIMENTAL 122 help 123 This enables using the Freescale MPC52xx Programmable Serial 124 Controller in master SPI mode. 125 126config SPI_MPC83xx 127 tristate "Freescale MPC83xx/QUICC Engine SPI controller" 128 depends on SPI_MASTER && (PPC_83xx || QUICC_ENGINE) && EXPERIMENTAL 129 select SPI_BITBANG 130 help 131 This enables using the Freescale MPC83xx and QUICC Engine SPI 132 controllers in master mode. 133 134 Note, this driver uniquely supports the SPI controller on the MPC83xx 135 family of PowerPC processors, plus processors with QUICC Engine 136 technology. This driver uses a simple set of shift registers for data 137 (opposed to the CPM based descriptor model). 138 139config SPI_OMAP_UWIRE 140 tristate "OMAP1 MicroWire" 141 depends on SPI_MASTER && ARCH_OMAP1 142 select SPI_BITBANG 143 help 144 This hooks up to the MicroWire controller on OMAP1 chips. 145 146config SPI_OMAP24XX 147 tristate "McSPI driver for OMAP24xx" 148 depends on SPI_MASTER && ARCH_OMAP24XX 149 help 150 SPI master controller for OMAP24xx Multichannel SPI 151 (McSPI) modules. 152 153config SPI_PXA2XX 154 tristate "PXA2xx SSP SPI master" 155 depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL 156 help 157 This enables using a PXA2xx SSP port as a SPI master controller. 158 The driver can be configured to use any SSP port and additional 159 documentation can be found a Documentation/spi/pxa2xx. 160 161config SPI_S3C24XX 162 tristate "Samsung S3C24XX series SPI" 163 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL 164 select SPI_BITBANG 165 help 166 SPI driver for Samsung S3C24XX series ARM SoCs 167 168config SPI_S3C24XX_GPIO 169 tristate "Samsung S3C24XX series SPI by GPIO" 170 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL 171 select SPI_BITBANG 172 help 173 SPI driver for Samsung S3C24XX series ARM SoCs using 174 GPIO lines to provide the SPI bus. This can be used where 175 the inbuilt hardware cannot provide the transfer mode, or 176 where the board is using non hardware connected pins. 177 178config SPI_TXX9 179 tristate "Toshiba TXx9 SPI controller" 180 depends on SPI_MASTER && GENERIC_GPIO && CPU_TX49XX 181 help 182 SPI driver for Toshiba TXx9 MIPS SoCs 183 184config SPI_XILINX 185 tristate "Xilinx SPI controller" 186 depends on SPI_MASTER && XILINX_VIRTEX && EXPERIMENTAL 187 select SPI_BITBANG 188 help 189 This exposes the SPI controller IP from the Xilinx EDK. 190 191 See the "OPB Serial Peripheral Interface (SPI) (v1.00e)" 192 Product Specification document (DS464) for hardware details. 193 194# 195# Add new SPI master controllers in alphabetical order above this line 196# 197 198# 199# There are lots of SPI device types, with sensors and memory 200# being probably the most widely used ones. 201# 202comment "SPI Protocol Masters" 203 depends on SPI_MASTER 204 205config SPI_AT25 206 tristate "SPI EEPROMs from most vendors" 207 depends on SPI_MASTER && SYSFS 208 help 209 Enable this driver to get read/write support to most SPI EEPROMs, 210 after you configure the board init code to know about each eeprom 211 on your target board. 212 213 This driver can also be built as a module. If so, the module 214 will be called at25. 215 216config SPI_SPIDEV 217 tristate "User mode SPI device driver support" 218 depends on SPI_MASTER && EXPERIMENTAL 219 help 220 This supports user mode SPI protocol drivers. 221 222 Note that this application programming interface is EXPERIMENTAL 223 and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes. 224 225config SPI_TLE62X0 226 tristate "Infineon TLE62X0 (for power switching)" 227 depends on SPI_MASTER && SYSFS 228 help 229 SPI driver for Infineon TLE62X0 series line driver chips, 230 such as the TLE6220, TLE6230 and TLE6240. This provides a 231 sysfs interface, with each line presented as a kind of GPIO 232 exposing both switch control and diagnostic feedback. 233 234# 235# Add new SPI protocol masters in alphabetical order above this line 236# 237 238# (slave support would go here) 239 240endmenu # "SPI support" 241 242