From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Only create framebuffers with supported format/modifier combinations by
checking that at least one plane supports the requested combination.
Using drm_any_plane_has_format() is somewhat suboptimal for vc4 since
the planes have (mostly) uniform capabilities. But I was lazy and
didn't feel like exporting drm_plane_format_check() and hand rolling
anything better. Also I really just wanted to come up with another
user for drm_any_plane_has_format() ;)
Compile tested only.
Cc: Eric Anholt <eric@xxxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/vc4/vc4_kms.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index ba60153dddb5..b6f15102dda0 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -184,6 +184,17 @@ static struct drm_framebuffer *vc4_fb_create(struct drm_device *dev,
mode_cmd = &mode_cmd_local;
}
+ if (!drm_any_plane_has_format(dev, mode_cmd->pixel_format,
+ mode_cmd->modifier[0])) {
+ struct drm_format_name_buf format_name;
+
+ DRM_DEBUG_KMS("unsupported pixel format %s / modifier 0x%llx\n",
+ drm_get_format_name(mode_cmd->pixel_format,
+ &format_name),
+ mode_cmd->modifier[0]);
+ return ERR_PTR(-EINVAL);
+ }
+
return drm_gem_fb_create(dev, file_priv, mode_cmd);
}
--
2.16.1
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