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David Brownell8ae12a02006-01-08 13:34:19 -08001#
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
10config SPI
11 bool "SPI support"
12 help
13 The "Serial Peripheral Interface" is a low level synchronous
14 protocol. Chips that support SPI can have data transfer rates
15 up to several tens of Mbit/sec. Chips are addressed with a
16 controller and a chipselect. Most SPI slaves don't support
17 dynamic device discovery; some are even write-only or read-only.
18
Matt LaPlante3cb2fcc2006-11-30 05:22:59 +010019 SPI is widely used by microcontrollers to talk with sensors,
David Brownell8ae12a02006-01-08 13:34:19 -080020 eeprom and flash memory, codecs and various other controller
21 chips, analog to digital (and d-to-a) converters, and more.
22 MMC and SD cards can be accessed using SPI protocol; and for
23 DataFlash cards used in MMC sockets, SPI must always be used.
24
25 SPI is one of a family of similar protocols using a four wire
26 interface (select, clock, data in, data out) including Microwire
27 (half duplex), SSP, SSI, and PSP. This driver framework should
28 work with most such devices and controllers.
29
30config SPI_DEBUG
31 boolean "Debug support for SPI drivers"
32 depends on SPI && DEBUG_KERNEL
33 help
34 Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
35 sysfs, and debugfs support in SPI controller and protocol drivers.
36
37#
38# MASTER side ... talking to discrete SPI slave chips including microcontrollers
39#
40
41config SPI_MASTER
42# boolean "SPI Master Support"
43 boolean
44 default SPI
45 help
46 If your system has an master-capable SPI controller (which
47 provides the clock and chipselect), you can enable that
48 controller and the protocol drivers for the SPI slave chips
49 that are connected.
50
51comment "SPI Master Controller Drivers"
52 depends on SPI_MASTER
53
Haavard Skinnemoen754ce4f2007-02-14 00:33:09 -080054config SPI_ATMEL
55 tristate "Atmel SPI Controller"
56 depends on (ARCH_AT91 || AVR32) && SPI_MASTER
57 help
58 This selects a driver for the Atmel SPI Controller, present on
59 many AT32 (AVR32) and AT91 (ARM) chips.
60
David Brownell9904f222006-01-08 13:34:26 -080061config SPI_BITBANG
62 tristate "Bitbanging SPI master"
63 depends on SPI_MASTER && EXPERIMENTAL
64 help
65 With a few GPIO pins, your system can bitbang the SPI protocol.
66 Select this to get SPI support through I/O pins (GPIO, parallel
67 port, etc). Or, some systems' SPI master controller drivers use
68 this code to manage the per-word or per-transfer accesses to the
69 hardware shift registers.
70
71 This is library code, and is automatically selected by drivers that
72 need it. You only need to select this explicitly to support driver
73 modules that aren't part of this kernel tree.
David Brownell8ae12a02006-01-08 13:34:19 -080074
David Brownell71117632006-01-08 13:34:29 -080075config SPI_BUTTERFLY
76 tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
77 depends on SPI_MASTER && PARPORT && EXPERIMENTAL
78 select SPI_BITBANG
79 help
80 This uses a custom parallel port cable to connect to an AVR
81 Butterfly <http://www.atmel.com/products/avr/butterfly>, an
82 inexpensive battery powered microcontroller evaluation board.
83 This same cable can be used to flash new firmware.
84
Andrea Paterniani69c202a2007-02-12 00:52:39 -080085config SPI_IMX
86 tristate "Freescale iMX SPI controller"
87 depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
88 help
89 This enables using the Freescale iMX SPI controller in master
90 mode.
91
Kumar Galaccf06992006-05-20 15:00:15 -070092config SPI_MPC83xx
93 tristate "Freescale MPC83xx SPI controller"
94 depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
95 select SPI_BITBANG
96 help
97 This enables using the Freescale MPC83xx SPI controller in master
98 mode.
99
100 Note, this driver uniquely supports the SPI controller on the MPC83xx
101 family of PowerPC processors. The MPC83xx uses a simple set of shift
102 registers for data (opposed to the CPM based descriptor model).
103
David Brownellfdb3c182007-02-12 00:52:37 -0800104config SPI_OMAP_UWIRE
105 tristate "OMAP1 MicroWire"
106 depends on SPI_MASTER && ARCH_OMAP1
107 select SPI_BITBANG
108 help
109 This hooks up to the MicroWire controller on OMAP1 chips.
110
Andrea Paterniani69c202a2007-02-12 00:52:39 -0800111
Stephen Streete0c99052006-03-07 23:53:24 -0800112config SPI_PXA2XX
113 tristate "PXA2xx SSP SPI master"
114 depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
115 help
116 This enables using a PXA2xx SSP port as a SPI master controller.
117 The driver can be configured to use any SSP port and additional
118 documentation can be found a Documentation/spi/pxa2xx.
119
David Brownell85abfaa2007-02-12 00:52:36 -0800120config SPI_S3C24XX
121 tristate "Samsung S3C24XX series SPI"
122 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
123 help
124 SPI driver for Samsung S3C24XX series ARM SoCs
125
Ben Dooks1fc75472006-05-20 15:00:17 -0700126config SPI_S3C24XX_GPIO
127 tristate "Samsung S3C24XX series SPI by GPIO"
128 depends on SPI_MASTER && ARCH_S3C2410 && SPI_BITBANG && EXPERIMENTAL
129 help
130 SPI driver for Samsung S3C24XX series ARM SoCs using
131 GPIO lines to provide the SPI bus. This can be used where
132 the inbuilt hardware cannot provide the transfer mode, or
133 where the board is using non hardware connected pins.
David Brownell8ae12a02006-01-08 13:34:19 -0800134#
135# Add new SPI master controllers in alphabetical order above this line
136#
137
David Brownell8ae12a02006-01-08 13:34:19 -0800138#
139# There are lots of SPI device types, with sensors and memory
140# being probably the most widely used ones.
141#
142comment "SPI Protocol Masters"
143 depends on SPI_MASTER
144
David Brownellb587b132007-02-12 00:52:48 -0800145config SPI_AT25
146 tristate "SPI EEPROMs from most vendors"
147 depends on SPI_MASTER && SYSFS
148 help
149 Enable this driver to get read/write support to most SPI EEPROMs,
150 after you configure the board init code to know about each eeprom
151 on your target board.
152
153 This driver can also be built as a module. If so, the module
154 will be called at25.
David Brownell8ae12a02006-01-08 13:34:19 -0800155
156#
157# Add new SPI protocol masters in alphabetical order above this line
158#
159
160
161# (slave support would go here)
162
163endmenu # "SPI support"
164