threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
58 lines
2.3 KiB
Plaintext
58 lines
2.3 KiB
Plaintext
What: /sys/bus/iio/devices/iio:deviceX/in_count0_preset
|
|
KernelVersion: 4.13
|
|
Contact: fabrice.gasnier@st.com
|
|
Description:
|
|
Reading returns the current preset value. Writing sets the
|
|
preset value. Encoder counts continuously from 0 to preset
|
|
value, depending on direction (up/down).
|
|
|
|
What: /sys/bus/iio/devices/iio:deviceX/in_count_quadrature_mode_available
|
|
KernelVersion: 4.13
|
|
Contact: fabrice.gasnier@st.com
|
|
Description:
|
|
Reading returns the list possible quadrature modes.
|
|
|
|
What: /sys/bus/iio/devices/iio:deviceX/in_count0_quadrature_mode
|
|
KernelVersion: 4.13
|
|
Contact: fabrice.gasnier@st.com
|
|
Description:
|
|
Configure the device counter quadrature modes:
|
|
- non-quadrature:
|
|
Encoder IN1 input servers as the count input (up
|
|
direction).
|
|
- quadrature:
|
|
Encoder IN1 and IN2 inputs are mixed to get direction
|
|
and count.
|
|
|
|
What: /sys/bus/iio/devices/iio:deviceX/in_count_polarity_available
|
|
KernelVersion: 4.13
|
|
Contact: fabrice.gasnier@st.com
|
|
Description:
|
|
Reading returns the list possible active edges.
|
|
|
|
What: /sys/bus/iio/devices/iio:deviceX/in_count0_polarity
|
|
KernelVersion: 4.13
|
|
Contact: fabrice.gasnier@st.com
|
|
Description:
|
|
Configure the device encoder/counter active edge:
|
|
- rising-edge
|
|
- falling-edge
|
|
- both-edges
|
|
|
|
In non-quadrature mode, device counts up on active edge.
|
|
In quadrature mode, encoder counting scenarios are as follows:
|
|
----------------------------------------------------------------
|
|
| Active | Level on | IN1 signal | IN2 signal |
|
|
| edge | opposite |------------------------------------------
|
|
| | signal | Rising | Falling | Rising | Falling |
|
|
----------------------------------------------------------------
|
|
| Rising | High -> | Down | - | Up | - |
|
|
| edge | Low -> | Up | - | Down | - |
|
|
----------------------------------------------------------------
|
|
| Falling | High -> | - | Up | - | Down |
|
|
| edge | Low -> | - | Down | - | Up |
|
|
----------------------------------------------------------------
|
|
| Both | High -> | Down | Up | Up | Down |
|
|
| edges | Low -> | Up | Down | Down | Up |
|
|
----------------------------------------------------------------
|