diff options
| author | Philipp Zabel <p.zabel@pengutronix.de> | 2016-07-22 12:02:45 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2017-03-15 15:42:33 +0100 |
| commit | f6b50ef14ea84725c1b41c9ffea611cdfb71c7dd (patch) | |
| tree | aa54a5dfdd0eff33e576ae70325405bdc0c435a8 /drivers/gpu/drm/imx/ipuv3-plane.h | |
| 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>
Diffstat (limited to 'drivers/gpu/drm/imx/ipuv3-plane.h')
| -rw-r--r-- | drivers/gpu/drm/imx/ipuv3-plane.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.h b/drivers/gpu/drm/imx/ipuv3-plane.h index 0e2a723ff981..596b24ddbf65 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.h +++ b/drivers/gpu/drm/imx/ipuv3-plane.h @@ -18,6 +18,7 @@ struct ipu_plane { struct ipu_soc *ipu; struct ipuv3_channel *ipu_ch; + struct ipuv3_channel *alpha_ch; struct dmfc_channel *dmfc; struct ipu_dp *dp; |