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drm/i915: Add horizontal mirroring support for CHV pipe B planes

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The primary and sprite planes on CHV pipe B support horizontal
mirroring. Expose it to the world.

Sadly the hardware ignores the mirror bit when the rotate bit is
set, so we'll have to reject the 180+X case.

v2: Drop the BIT()
v3: Pass dev_priv instead of dev to IS_CHERRYVIEW()

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479142440-25283-4-git-send-email-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä
2016-11-14 18:54:00 +02:00
parent df0cd455e7
commit 4ea7be2b56
3 changed files with 27 additions and 0 deletions
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9
drivers/gpu/drm/i915/intel_sprite.c
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@@ -430,6 +430,9 @@ vlv_update_plane(struct drm_plane *dplane,
if (rotation & DRM_ROTATE_180)
sprctl |= SP_ROTATE_180;
if (rotation & DRM_REFLECT_X)
sprctl |= SP_MIRROR;
/* Sizes are 0 based */
src_w--;
src_h--;
@@ -442,6 +445,8 @@ vlv_update_plane(struct drm_plane *dplane,
if (rotation & DRM_ROTATE_180) {
x += src_w;
y += src_h;
} else if (rotation & DRM_REFLECT_X) {
x += src_w;
}
linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
@@ -1121,6 +1126,10 @@ intel_sprite_plane_create(struct drm_i915_private *dev_priv,
supported_rotations =
DRM_ROTATE_0 | DRM_ROTATE_90 |
DRM_ROTATE_180 | DRM_ROTATE_270;
} else if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
supported_rotations =
DRM_ROTATE_0 | DRM_ROTATE_180 |
DRM_REFLECT_X;
} else {
supported_rotations =
DRM_ROTATE_0 | DRM_ROTATE_180;