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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2017-12-18 17:59:07 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-19 09:26:00 +0100
commitbbecb07fa0af9a41507ce06d4631fdb3b5059417 (patch)
tree5326e5865a1100ab9dda4f774d01a5a8de7996de /drivers/siox/Kconfig
parent0ba002bc4393dcfae031fc707b11c094b46a5048 (diff)
downloadlinux-bbecb07fa0af9a41507ce06d4631fdb3b5059417.tar.bz2
siox: new driver framework for eckelmann SIOX
SIOX is a bus system invented at Eckelmann AG to control their building management and refrigeration systems. Traditionally the bus was implemented on custom microcontrollers, today Linux based machines are in use, too. The topology on a SIOX bus looks as follows: ,------->--DCLK-->---------------+----------------------. ^ v v ,--------. ,----------------------. ,------ | | | ,--------------. | | | |--->--DOUT-->---|->-|shift register|->-|--->---| | | | `--------------' | | | master | | device | | device | | | ,--------------. | | | |---<--DIN---<---|-<-|shift register|-<-|---<---| | | | `--------------' | | `--------' `----------------------' `------ v ^ ^ `----------DLD-------------------+----------------------' There are two control lines (DCLK and DLD) driven from the bus master to all devices in parallel and two daisy chained data lines, one for input and one for output. DCLK is the clock to shift both chains by a single bit. On an edge of DLD the devices latch both their input and output shift registers. This patch adds a framework for this bus type. Acked-by: Gavin Schenk <g.schenk@eckelmann.de> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/siox/Kconfig')
-rw-r--r--drivers/siox/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/siox/Kconfig b/drivers/siox/Kconfig
new file mode 100644
index 000000000000..bd24d9b50dc6
--- /dev/null
+++ b/drivers/siox/Kconfig
@@ -0,0 +1,9 @@
+menuconfig SIOX
+ tristate "Eckelmann SIOX Support"
+ help
+ SIOX stands for Serial Input Output eXtension and is a synchronous
+ bus system invented by Eckelmann AG. It is used in their control and
+ remote monitoring systems for commercial and industrial refrigeration
+ to drive additional I/O units.
+
+ Unless you know better, it is probably safe to say "no" here.