| commit | f6b50ef14ea84725c1b41c9ffea611cdfb71c7dd | [log] [tgz] |
|---|---|---|
| author | Philipp Zabel <p.zabel@pengutronix.de> | Fri Jul 22 12:02:45 2016 +0200 |
| committer | Philipp Zabel <p.zabel@pengutronix.de> | Wed Mar 15 15:42:33 2017 +0100 |
| tree | aa54a5dfdd0eff33e576ae70325405bdc0c435a8 | |
| parent | 0bfd56f05552b7d0d08a8c39b6198018b52de7f5 [diff] |
drm/imx: ipuv3-plane: add support for separate alpha planes The IPUv3 can read 8-bit alpha values from a separate plane buffer using a companion IDMAC channel driven by the Alpha Transparency Controller (ATC) for the graphics channels. The conditional read mechanism allows to reduce memory bandwidth by skipping reads of color data for completely transparent bursts. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>