Define the sysfs interface for toggle capable channels. Toggle enabled channels will have: * out_voltageY_toggle_en * out_voltageY_raw0 * out_voltageY_raw1 * out_voltageY_symbol The common interface present in all channels is: * out_voltageY_raw (not present in toggle enabled channels) * out_voltageY_raw_available * out_voltageY_powerdown * out_voltageY_scale * out_voltageY_offset Co-developed-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Signed-off-by: Kim Seer Paller <kimseer.paller@xxxxxxxxxx> --- .../ABI/testing/sysfs-bus-iio-dac-ltc2664 | 30 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 31 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2664 diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2664 b/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2664 new file mode 100644 index 000000000..4b656b7af --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2664 @@ -0,0 +1,30 @@ +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_toggle_en +KernelVersion: 5.18 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + Toggle enable. Write 1 to enable toggle or 0 to disable it. This is + useful when one wants to change the DAC output codes. The way it should + be done is: + + - disable toggle operation; + - change out_voltageY_raw0 and out_voltageY_raw1; + - enable toggle operation. + +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw0 +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw1 +KernelVersion: 5.18 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + It has the same meaning as out_voltageY_raw. This attribute is + specific to toggle enabled channels and refers to the DAC output + code in INPUT_A (_raw0) and INPUT_B (_raw1). The same scale and offset + as in out_voltageY_raw applies. + +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_symbol +KernelVersion: 5.18 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + Performs a SW toggle. This attribute is specific to toggle + enabled channels and allows to toggle between out_voltageY_raw0 + and out_voltageY_raw1 through software. Writing 0 will select + out_voltageY_raw0 while 1 selects out_voltageY_raw1. diff --git a/MAINTAINERS b/MAINTAINERS index bd8645f6e..9ed00b364 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12842,6 +12842,7 @@ M: Kim Seer Paller <kimseer.paller@xxxxxxxxxx> L: linux-iio@xxxxxxxxxxxxxxx S: Supported W: https://ez.analog.com/linux-software-drivers +F: Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2664 F: Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml LTC2688 IIO DAC DRIVER -- 2.34.1
