Re: [PATCH v14 14/15] drm/mediatek: dpi: Add dp_intf support

From: AngeloGioacchino Del Regno
Date: Mon Jun 27 2022 - 06:52:45 EST


Il 24/06/22 05:09, Bo-Chen Chen ha scritto:
From: Guillaume Ranquet <granquet@xxxxxxxxxxxx>

Dpintf is the displayport interface hardware unit. This unit is similar
to dpi and can reuse most of the code.

This patch adds support for mt8195-dpintf to this dpi driver. Main
differences are:
- 4 pixels for one iteration for dp_intf while dpi is 1 pixel for one
iteration. Therefore, we add a new config "pixels_per_iter" to control
quantity of transferred pixels per iteration.
- Input of dp_intf is two pixels per iteration, so we add a new config
"input_2pixel" to control this.
- Some register contents differ slightly between the two components. To
work around this I added register bits/masks with a DPINTF_ prefix
and use them where different.

Based on a separate driver for dpintf created by
Jitao shi <jitao.shi@xxxxxxxxxxxx>.

Signed-off-by: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
Signed-off-by: Guillaume Ranquet <granquet@xxxxxxxxxxxx>
[Bo-Chen: Modify reviewers' comments.]
Signed-off-by: Bo-Chen Chen <rex-bc.chen@xxxxxxxxxxxx>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>