RE: [PATCH v2 2/2] rtw88: add a debugfs entry to enable/disable coex mechanism

Kalle Valo [off-list ref] writes:

Tony Chuang [off-list ref] writes:

quoted

Kalle Valo [off-list ref] :

quoted

[off-list ref] writes:

quoted

From: Yan-Hsuan Chuang <redacted>

Sometimes we need to stop the coex mechanism to debug, so that we
can manually control the device through various outer commands.
Hence, add a new debugfs coex_enable to allow us to enable/disable
the coex mechanism when driver is running.

To disable coex
echo 0 > /sys/kernel/debug/ieee80211/phyX/rtw88/coex_enable

To enable coex
echo 1 > /sys/kernel/debug/ieee80211/phyX/rtw88/coex_enable

To check coex dm is enabled or not
cat /sys/kernel/debug/ieee80211/phyX/rtw88/coex_enable

I forgot, did we add a command to nl80211 for managing btcoex? At least
we have talking about that for years. Please check that first before
adding a debugfs interface for this.

Yes, I found there was a thread [1] talking about adding a callback to
enable/disable btcoex, but it seems not get applied eventually.

Too bad, I really think we should have at least enable/disable
functionality in nl80211. But if it's not there, I guess it's ok to have
yet another driver custom debugfs file :/

Yes, so please take this ;)

Thanks
Yen-Hsuan