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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 /drivers/gpu | |
| parent | 968029057192e46dd78e807b81c2aba2d7648c38 (diff) | |
| download | linux-next-e7afb623b4fb82089c9a50c733c740522b8220bc.tar.gz | |
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 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 1fa98bd12003..679455e36829 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -636,6 +636,29 @@ static int __setplane_check(struct drm_plane *plane, return 0; } +/** + * drm_any_plane_has_format - Check whether any plane supports this format and modifier combination + * @dev: DRM device + * @format: pixel format (DRM_FORMAT_*) + * @modifier: data layout modifier + * + * Returns: + * Whether at least one plane supports the specified format and modifier combination. + */ +bool drm_any_plane_has_format(struct drm_device *dev, + u32 format, u64 modifier) +{ + struct drm_plane *plane; + + drm_for_each_plane(plane, dev) { + if (drm_plane_check_pixel_format(plane, format, modifier) == 0) + return true; + } + + return false; +} +EXPORT_SYMBOL(drm_any_plane_has_format); + /* * __setplane_internal - setplane handler for internal callers * |