[EHL] Quadrature Encoder Peripheral support

[quanxian]

Description:
Support a quadrature encoder peripheral (QEP) that is a peripheral designed to interface to a shaft encoder fitted to either a motor shaft or a user interface dial, as a means to measure rotational speed, direction, and optionally absolute angle of rotation.

Commit ids: b711f687a1c1
Target Release: 22.04
Target Kernel: 5.14

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1842144

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[[e-mail] (pragyan)]

Patch list merged in 5.14
b711f687a1c1c counter: Add support for Intel Quadrature Encoder Peripheral
ac3bd9d6b11f6 counter: intel-qep: Mark PM callbacks with __maybe_unused
93466212b9329 counter: intel-qep: Use to_pci_dev() helper

[Anthony Wong (anthonywong)]

@Intel
Any guidance on how to verify this?

[Sachin Mokashi (sachinmokashi)]

@anthonywong

Please refer to this ID for a full list of out-of-tree patches needed for QEP:
https://bugs.launchpad.net/intel/+bug/1929897

[Sachin Mokashi (sachinmokashi)]

Please find the steps to verify and test from here:
https://cdrdv2.intel.com/v1/dl/getContent/614200?wapkw=Elkhart%20Quadrature

[Anthony Wong (anthonywong)]

Uploaded to our internal drive at https://drive.google.com/file/d/1_vDK75IM4NJfwjLrVb3z9Pcv_TgEL8S5/view

[Kent Lin (kent-jclin)]

Test Steps in #5:
1. Connect the encoder of the motor to the CRB QEP_0
- Intel said this step is not needed.
2. Go to BIOS Intel Advance Menu-> PCH IO Configuration > PSE to set
QEPx to "Host owned with pin mux"
PSE_I2C7 to "Host owned with pin mux"
3. Boot to OS
4. $lspci
5. Check if following OSE_IO device ID appears
- lscpi |grep -i 4bc3
- lscpi |grep -i 4b81
- lscpi |grep -i 4b82
- lscpi |grep -i 4b83
6. Check if device note exited:
/sys/bus/pci/devices/0000:<PCI Slot Number>/

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1842144

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.