Add a helper function to convert DRM rotation to TILER rotation.
Signed-off-by: Tomi Valkeinen <tomi.valkei...@ti.com>
---
drivers/gpu/drm/omapdrm/omap_fb.c | 56 ++++++++++++++++++++++-----------------
1 file changed, 31 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c
b/drivers/gpu/drm/omapdrm/omap_fb.c
index c565f5734a53..4fc5db5d2d29 100644
--- a/drivers/gpu/drm/omapdrm/omap_fb.c
+++ b/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -122,6 +122,36 @@ bool omap_framebuffer_supports_rotation(struct
drm_framebuffer *fb)
return omap_gem_flags(plane->bo) & OMAP_BO_TILED;
}
+/* Note: DRM rotates counter-clockwise, TILER & DSS rotates clockwise */
+static uint32_t drm_rotation_to_tiler(unsigned int drm_rot)
+{
+ uint32_t orient;
+
+ switch (drm_rot & DRM_ROTATE_MASK) {
+ default:
+ case DRM_ROTATE_0:
+ orient = 0;
+ break;
+ case DRM_ROTATE_90:
+ orient = MASK_XY_FLIP | MASK_X_INVERT;
+ break;
+ case DRM_ROTATE_180:
+ orient = MASK_X_INVERT | MASK_Y_INVERT;
+ break;
+ case DRM_ROTATE_270:
+ orient = MASK_XY_FLIP | MASK_Y_INVERT;
+ break;
+ }
+
+ if (drm_rot & DRM_REFLECT_X)
+ orient ^= MASK_X_INVERT;
+
+ if (drm_rot & DRM_REFLECT_Y)
+ orient ^= MASK_Y_INVERT;
+
+ return orient;
+}
+
/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
*/
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
@@ -148,31 +178,7 @@ void omap_framebuffer_update_scanout(struct
drm_framebuffer *fb,
uint32_t w = win->src_w;
uint32_t h = win->src_h;
- switch (win->rotation & DRM_ROTATE_MASK) {
- default:
- dev_err(fb->dev->dev, "invalid rotation: %02x",
- (uint32_t)win->rotation);
- /* fallthru to default to no rotation */
- case 0:
- case DRM_ROTATE_0:
- orient = 0;
- break;
- case DRM_ROTATE_90:
- orient = MASK_XY_FLIP | MASK_X_INVERT;
- break;
- case DRM_ROTATE_180:
- orient = MASK_X_INVERT | MASK_Y_INVERT;
- break;
- case DRM_ROTATE_270:
- orient = MASK_XY_FLIP | MASK_Y_INVERT;
- break;
- }
-
- if (win->rotation & DRM_REFLECT_X)
- orient ^= MASK_X_INVERT;
-
- if (win->rotation & DRM_REFLECT_Y)
- orient ^= MASK_Y_INVERT;
+ orient = drm_rotation_to_tiler(win->rotation);
/* adjust x,y offset for flip/invert: */
if (orient & MASK_XY_FLIP)
--
2.7.4
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