android_kernel_xiaomi_sm8350/include/linux/spi
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
..
ad7877.h
ads7846.h
at73c213.h
corgi_lcd.h
ds1305.h
eeprom.h memory_accessor: implement the new memory_accessor interfaces for SPI EEPROMs 2009-04-02 19:04:50 -07:00
flash.h
Kbuild
libertas_spi.h libertas: if_spi: add ability to call board specific setup/teardown methods 2009-02-09 15:03:48 -05:00
max7301.h
mcp23s08.h
mmc_spi.h
orion_spi.h
spi_bitbang.h spi_bitbang: add more lowlevel function documentation 2009-02-20 17:57:49 -08:00
spi_gpio.h spi-gpio: allow operation without CS signal 2009-04-02 19:04:51 -07:00
spi.h
spidev.h headers_check fix: spi/spidev.h 2009-01-30 23:33:12 +05:30
tdo24m.h
tle62x0.h