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[ Upstream commit 157c0f2f64 ]
During the initial connect to a non-pd port, sink would hard reset
twice before deeming that the port partner is non-pd. TCPM sets the
the charge path to false during the hard reset. This causes unnecessary
connects/disconnects of charge path and makes port take longer to
charge from the non-pd ports. Avoid this by not setting the charge path
to false unless the partner has already identified to be pd capable.
When partner is a pd port, set the charge path to false in
SNK_HARD_RESET_SINK_OFF. Set the current limits to default value based
of CC pull up and resume the charge path when port enters
SNK_HARD_RESET_SINK_ON.
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
--------
Changes in V3:
Rebase on top of usb-next
Changes in V2:
Based on feedback of jackp@codeaurora.org
- vsafe_5v_hard_reset flag from tcpc_config is removed
- Patch only differentiates between pd port partner and non-pd port
partner
V1 version of the patch is here:
https://lkml.org/lkml/2018/9/14/11
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>