diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-09-21 10:59:26 +0200 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2016-09-22 00:04:01 -0700 |
| commit | 18733802466d032cd84e57f1e4b21ecae635f192 (patch) | |
| tree | f8a031317b0fa8e55b5896152d10aefddbb853e1 /drivers/gpu/drm/drm_blend.c | |
| parent | 532b36712ddfdca90f4db9a5365039cc08a3ff84 (diff) | |
drm: Conslidate blending properties in drm_blend.[hc]
Imo zpos, rotatation, blending eq (once we have it) and all that
should be in drm_blend.c, since those are all about how exactly the
pixels are rendered onto the CRTC's visible area. Also noticed that
one exported function accidentally ended up in drm_crtc_internal.h,
move it to the right place too.
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1474448370-32227-3-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/drm_blend.c')
| -rw-r--r-- | drivers/gpu/drm/drm_blend.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c index 0a0b9357db35..0b8e227aa175 100644 --- a/drivers/gpu/drm/drm_blend.c +++ b/drivers/gpu/drm/drm_blend.c @@ -25,13 +25,62 @@ */ #include <drm/drmP.h> #include <drm/drm_atomic.h> -#include <drm/drm_crtc.h> +#include <drm/drm_blend.h> #include <linux/export.h> #include <linux/slab.h> #include <linux/sort.h> #include "drm_crtc_internal.h" +struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, + unsigned int supported_rotations) +{ + static const struct drm_prop_enum_list props[] = { + { __builtin_ffs(DRM_ROTATE_0) - 1, "rotate-0" }, + { __builtin_ffs(DRM_ROTATE_90) - 1, "rotate-90" }, + { __builtin_ffs(DRM_ROTATE_180) - 1, "rotate-180" }, + { __builtin_ffs(DRM_ROTATE_270) - 1, "rotate-270" }, + { __builtin_ffs(DRM_REFLECT_X) - 1, "reflect-x" }, + { __builtin_ffs(DRM_REFLECT_Y) - 1, "reflect-y" }, + }; + + return drm_property_create_bitmask(dev, 0, "rotation", + props, ARRAY_SIZE(props), + supported_rotations); +} +EXPORT_SYMBOL(drm_mode_create_rotation_property); + +/** + * drm_rotation_simplify() - Try to simplify the rotation + * @rotation: Rotation to be simplified + * @supported_rotations: Supported rotations + * + * Attempt to simplify the rotation to a form that is supported. + * Eg. if the hardware supports everything except DRM_REFLECT_X + * one could call this function like this: + * + * drm_rotation_simplify(rotation, DRM_ROTATE_0 | + * DRM_ROTATE_90 | DRM_ROTATE_180 | + * DRM_ROTATE_270 | DRM_REFLECT_Y); + * + * to eliminate the DRM_ROTATE_X flag. Depending on what kind of + * transforms the hardware supports, this function may not + * be able to produce a supported transform, so the caller should + * check the result afterwards. + */ +unsigned int drm_rotation_simplify(unsigned int rotation, + unsigned int supported_rotations) +{ + if (rotation & ~supported_rotations) { + rotation ^= DRM_REFLECT_X | DRM_REFLECT_Y; + rotation = (rotation & DRM_REFLECT_MASK) | + BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4); + } + + return rotation; +} +EXPORT_SYMBOL(drm_rotation_simplify); + /** * drm_plane_create_zpos_property - create mutable zpos property * @plane: drm plane |