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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-10-29 20:34:52 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-11-06 21:34:22 +0200 |
| commit | e7afb623b4fb82089c9a50c733c740522b8220bc (patch) | |
| tree | 881e5747b55073c6da147abb8866df0bd4b96da6 /include/drm | |
| parent | 968029057192e46dd78e807b81c2aba2d7648c38 (diff) | |
| download | linux-e7afb623b4fb82089c9a50c733c740522b8220bc.tar.gz linux-e7afb623b4fb82089c9a50c733c740522b8220bc.tar.bz2 linux-e7afb623b4fb82089c9a50c733c740522b8220bc.zip | |
drm: Add drm_any_plane_has_format()
Add a function to check whether there is at least one plane that
supports a specific format and modifier combination. Drivers can
use this to reject unsupported formats/modifiers in .fb_create().
v2: Accept anyformat if the driver doesn't do planes (Eric)
s/planes_have_format/any_plane_has_format/ (Eric)
Check the modifier as well since we already have a function
that does both
v3: Don't do the check in the core since we may not know the
modifier yet, instead export the function and let drivers
call it themselves
Cc: Eric Anholt <eric@anholt.net>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181029183453.28541-1-ville.syrjala@linux.intel.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_mode_config.h | 6 | ||||
| -rw-r--r-- | include/drm/drm_plane.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index d643d268693e..5dbeabdbaf91 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -52,6 +52,12 @@ struct drm_mode_config_funcs { * requested metadata, but most of that is left to the driver. See * &struct drm_mode_fb_cmd2 for details. * + * To validate the pixel format and modifier drivers can use + * drm_any_plane_has_format() to make sure at least one plane supports + * the requested values. Note that the driver must first determine the + * actual modifier used if the request doesn't have it specified, + * ie. when (@mode_cmd->flags & DRM_MODE_FB_MODIFIERS) == 0. + * * If the parameters are deemed valid and the backing storage objects in * the underlying memory manager all exist, then the driver allocates * a new &drm_framebuffer structure, subclassed to contain diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h index 0a0834bef8bd..3701f56c3362 100644 --- a/include/drm/drm_plane.h +++ b/include/drm/drm_plane.h @@ -798,5 +798,7 @@ static inline struct drm_plane *drm_plane_find(struct drm_device *dev, #define drm_for_each_plane(plane, dev) \ list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) +bool drm_any_plane_has_format(struct drm_device *dev, + u32 format, u64 modifier); #endif |