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linux/drivers/spi
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Michael Buesch bfb9bcdbda spi-gpio: allow operation without CS signal 
Change spi-gpio so that it is possible to drive SPI communications over
GPIO without the need for a chipselect signal.

This is useful in very small setups where there's only one slave device
on the bus.

This patch does not affect existing setups.

I use this for a tiny communication channel between an embedded device and
a microcontroller.  There are not enough GPIOs available for chipselect
and it's not needed anyway in this case.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:04:51 -07:00
..
atmel_spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
atmel_spi.h [PATCH] SPI: atmel_spi driver 2007-02-14 08:09:53 -08:00
au1550_spi.c spi: au1550_spi full duplex dma fix 2008-12-01 19:55:24 -08:00
Kconfig spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom 2009-01-26 21:19:54 +01:00
Makefile spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom 2009-01-26 21:19:54 +01:00
mpc52xx_psc_spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
omap2_mcspi.c Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
omap_uwire.c Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
orion_spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
pxa2xx_spi.c Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
spi_bfin5xx.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
spi_bitbang.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
spi_butterfly.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
spi_gpio.c spi-gpio: allow operation without CS signal 2009-04-02 19:04:51 -07:00
spi_imx.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
spi_lm70llp.c hwmon: (lm70) Code streamlining and cleanup 2009-01-07 16:37:34 +01:00
spi_mpc83xx.c spi_mpc83xx: add OF platform driver bindings 2009-04-01 08:59:22 -07:00
spi_s3c24xx_gpio.c spi: fix spi_s3c24xx_gpio num_chipselect 2008-12-01 19:55:24 -08:00
spi_s3c24xx.c spi: use generic gpio calls in spi_s3c24xx_gpio 2009-01-06 15:59:19 -08:00
spi_sh_sci.c spi: fix platform driver hotplug/coldplug 2008-04-11 08:06:43 -07:00
spi_txx9.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
spidev.c spi: avoid spidev crash when device is removed 2008-12-01 19:55:24 -08:00
tle62x0.c tle62x0 driver stops ignoring read errors 2007-11-14 18:45:42 -08:00
xilinx_spi.c powerpc/virtex/spi: Xilinx SPI driver not releasing memory 2009-03-11 09:36:20 -06:00