[PATCH 05/23] drm/sun4i: tcon: Don't rely on encoders to enable the TCON

[Chen-Yu Tsai]

On Tue, Oct 17, 2017 at 5:06 PM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:
> So far, we've required all the TCON-connected encoders to call the TCON
> enable and disable functions.
>
> This was made this way because in the RGB/LVDS case, the TCON is the CRTC
> and the encoder. However, in all the other cases (HDMI, TV, DSI, etc.), we
> have another encoder down the road that needs to be programmed.
>
> We also needed to know which channel the encoder is connected to, which is
> encoder-specific.
>
> The CRTC's enable and disable callbacks can work just fine for our use
> case, and we can get the channel to use just by looking at the type of
> encoder, since that is fixed. Implement those callbacks, which will
> remove some of the encoder boilerplate.
>
> Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>

Reviewed-by: Chen-Yu Tsai <wens at csie.org>