diff options
| author | Thierry Reding <treding@nvidia.com> | 2017-12-20 09:39:14 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-12-21 14:55:55 +0100 |
| commit | ebae8d07435ae91314f4a28d69b530d09c625815 (patch) | |
| tree | fbe41c4c436502a2f073a3c352d3b14a3886cf15 /drivers/gpu/drm/tegra/fb.c | |
| parent | 4c69ac12e39d3d623686d1c421b05d604e1c6db9 (diff) | |
| download | linux-ebae8d07435ae91314f4a28d69b530d09c625815.tar.bz2 | |
drm/tegra: dc: Implement legacy blending
This implements alpha blending on legacy display controllers (Tegra20,
Tegra30 and Tegra114). While it's theoretically possible to support the
zpos property to enable userspace to specify the Z-order of each plane
individually, this is not currently supported and the same fixed Z-
order as previously defined is used.
Reverts commit 71835caa00e8 ("drm/tegra: fb: Force alpha formats") since
the opaque formats are now supported.
Reported-by: Dmitry Osipenko <digetx@gmail.com>
Fixes: 7772fdaef939 ("drm/tegra: Support ARGB and ABGR formats")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/fb.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/fb.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index 1af4ef9241f1..e05fde7172f8 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -254,18 +254,6 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper, cmd.pitches[0] = round_up(sizes->surface_width * bytes_per_pixel, tegra->pitch_align); - /* - * Early generations of Tegra (Tegra20 and Tegra30) do not support any - * of the X* or *X formats, only their A* or *A equivalents. Force the - * legacy framebuffer format to include an alpha component so that the - * framebuffer emulation can be supported on all generations. - */ - if (sizes->surface_bpp == 32 && sizes->surface_depth == 24) - sizes->surface_depth = 32; - - if (sizes->surface_bpp == 16 && sizes->surface_depth == 15) - sizes->surface_depth = 16; - cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); |