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drm: Add drm_plane_force_disable()

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drm_plane_force_disable() will forcibly disable the plane even if user
had previously requested the plane to be enabled.

This can be used to force planes to be off when restoring the fbdev
mode.

The code was simply pulled from drm_framebuffer_remove(), which now
calls the new function as well.

v2: Check plane->fb in drm_plane_force_disable(), drop bogus comment
    about disabling crtc

Signed-off-by: Ville Syrjälä <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Ville Syrjälä 2013-06-03 16:10:40 +03:00 • committed by Dave Airlie
commit 9125e61868
2 changed files with 20 additions and 10 deletions
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1
include/drm/drm_crtc.h
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@ -894,6 +894,7 @@ extern int drm_plane_init(struct drm_device *dev,
const uint32_t *formats, uint32_t format_count,
bool priv);
extern void drm_plane_cleanup(struct drm_plane *plane);
extern void drm_plane_force_disable(struct drm_plane *plane);
extern void drm_encoder_cleanup(struct drm_encoder *encoder);