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TCPM supports BIST carried mode. PD compliance tests require BIST Test Data to be supported as well. Introducing set_bist_data callback to signal tcpc driver for configuring the port controller hardware to enable/disable BIST Test Data mode. Signed-off-by: Badhri Jagan Sridharan <badhri@google.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20200716034128.1251728-1-badhri@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>