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We support two kinds of analog connections: 1. DVI-I, which allows both digital and analog signals: The DC code base only allows 1 encoder per connector, and the preferred engine type is still going to be digital. So, for DVI-I to work, we need to make sure the pre-existing link encoder can also work with analog signals. 1. VGA, which only supports analog signals: For VGA, we need to create a link encoder that only works with the DAC without perturbing any digital transmitter functionality. Since dce110_link_encoder already supports analog DVI-I, just reuse that code for VGA as well. v2: Reduce code churn by reusing same link encoder for VGA and DVI-I. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>