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| author | Peter Rosin <peda@axentia.se> | 2016-11-08 12:58:56 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-11-13 14:07:15 +0100 |
| commit | 7fde1484af21f9668e9575bd8a119ebc4fe6fe42 (patch) | |
| tree | 99e62de525a9976f355f5916bdcad5c6a0bfba64 /drivers/iio/dac/Kconfig | |
| parent | dt-bindings: iio: document dpot-dac bindings (diff) | |
| download | linux-7fde1484af21f9668e9575bd8a119ebc4fe6fe42.tar.xz linux-7fde1484af21f9668e9575bd8a119ebc4fe6fe42.zip | |
iio: dpot-dac: DAC driver based on a digital potentiometer
It is assumed that the dpot is used as a voltage divider between the
current dpot wiper setting and the maximum resistance of the dpot. The
divided voltage is provided by a vref regulator.
.------.
.-----------. | |
| vref |--' .---.
| regulator |--. | |
'-----------' | | d |
| | p |
| | o | wiper
| | t |<---------+
| | |
| '---' dac output voltage
| |
'------+------------+
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/dac/Kconfig')
| -rw-r--r-- | drivers/iio/dac/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig index 120b24478469..d3084028905b 100644 --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -200,6 +200,16 @@ config AD8801 To compile this driver as a module choose M here: the module will be called ad8801. +config DPOT_DAC + tristate "DAC emulation using a DPOT" + depends on OF + help + Say yes here to build support for DAC emulation using a digital + potentiometer. + + To compile this driver as a module, choose M here: the module will be + called dpot-dac. + config LPC18XX_DAC tristate "NXP LPC18xx DAC driver" depends on ARCH_LPC18XX || COMPILE_TEST |