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drm: Conslidate blending properties in drm_blend.[hc]

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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
This commit is contained in:
Daniel Vetter
2016-09-21 10:59:26 +02:00
committed by Sean Paul
parent 532b36712d
commit 1873380246
5 changed files with 110 additions and 79 deletions
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51
drivers/gpu/drm/drm_blend.c
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@@ -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