Public bug reported:
[Impact]
Systems using Intel SoundWire codecs from the tac5xx2 family on Intel NVL may
fail to wake from suspend. The codec was not treated as a wake-capable device.
Symptom: system does not resume with normal wake inputs and dmesg shows no
SoundWire wake/resume messages.
[Fix]
Add tac5xx2 family to the intel_auxdevice wake_capable_list so the codec is
recognized as wake-capable. Upstream commit: 1d4d3198ccce. No released v* tag
contains this commit (appears in the upstream tree).
[Test Plan]
Suspend and wake 10 times:
$ sudo rtcwake -m mem -s 20
Use the usual wake input (power button, lid, keyboard).
Without patch: system fails to resume or needs manual power. With patch: system
resumes normally and dmesg shows SoundWire wake/resume messages.
[Where problems could occur]
If a non-wake-capable device is added, machines may see immediate wakeups or
fail to enter deep suspend. This would show as repeated spurious wakes or
inability to reach low-power suspend while running the intel_auxdevice
SoundWire driver.
[Other Info]
Subsystem: drivers/soundwire (intel_auxdevice). Target: mainline and backports
for Ubuntu kernels as needed.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: In Progress
** Affects: linux-oem-7.0 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-7.0 (Ubuntu Resolute)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Stonking)
Importance: Undecided
Status: In Progress
** Affects: linux-oem-7.0 (Ubuntu Stonking)
Importance: Undecided
Status: New
** Tags: jira-somerville-4801 oem-priority somerville
** Also affects: linux-oem-7.0 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux-oem-7.0 (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Stonking)
Importance: Undecided
Status: New
** Also affects: linux-oem-7.0 (Ubuntu Stonking)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Stonking)
Status: New => In Progress
** Changed in: linux (Ubuntu Resolute)
Status: New => Invalid
** Tags added: jira-somerville-4801 oem-priority somerville
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https://bugs.launchpad.net/bugs/2167689
Title:
Support TI TAC5xx2 audio codec on Intel NVL platform
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