thunderbolt: Add wake on connect/disconnect on USB4 ports

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Wake on connect/disconnect is only supported while runtime suspend for
now, which is obviously necessary. It is also not inherently desired for
the system to wakeup on Thunderbolt/USB4 hot plug events. However, we
can still make user in control of waking up the system in the events of
hot plug/unplug.

This patch adds 'wakeup' attribute under 'usb4_portX/power' sysfs
attribute and only enables wakes on connect/disconnect to the respective
port when 'wakeup' is set to 'enabled'. The attribute is set to
'disabled' by default.

Signed-off-by: Rajat Khandelwal <rajat.khandelwal@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

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This commit is contained in:

Rajat Khandelwal 2022-11-01 17:20:42 +05:30 • committed by Mika Westerberg

parent 2ae18cc226

commit a5cfc9d658

3 changed files with 30 additions and 8 deletions

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2

drivers/thunderbolt/tb_regs.h

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33

drivers/thunderbolt/usb4.c

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3

drivers/thunderbolt/usb4_port.c

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