serial: tegra: add internal loopback functionality

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Add the internal loopback functionality that can be enabled with
TIOCM_LOOP.

Signed-off-by: Andreas Abel <aabel@nvidia.com>
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/1565609303-27000-2-git-send-email-kyarlagadda@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Andreas Abel 2019-08-12 16:58:10 +05:30 • committed by Greg Kroah-Hartman

parent d2ace81bf9

commit 6300b140c2

1 changed files with 22 additions and 4 deletions

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drivers/tty/serial/serial-tegra.c

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