From: Ville Syrjälä ville.syrjala@linux.intel.com
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.
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com --- drivers/gpu/drm/drm_crtc.c | 27 +++++++++++++++++---------- include/drm/drm_crtc.h | 1 + 2 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index e7e9242..c65124d 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -569,16 +569,8 @@ void drm_framebuffer_remove(struct drm_framebuffer *fb) }
list_for_each_entry(plane, &dev->mode_config.plane_list, head) { - if (plane->fb == fb) { - /* should turn off the crtc */ - ret = plane->funcs->disable_plane(plane); - if (ret) - DRM_ERROR("failed to disable plane with busy fb\n"); - /* disconnect the plane from the fb and crtc: */ - __drm_framebuffer_unreference(plane->fb); - plane->fb = NULL; - plane->crtc = NULL; - } + if (plane->fb == fb) + drm_plane_force_disable(plane); } drm_modeset_unlock_all(dev); } @@ -867,6 +859,21 @@ void drm_plane_cleanup(struct drm_plane *plane) } EXPORT_SYMBOL(drm_plane_cleanup);
+void drm_plane_force_disable(struct drm_plane *plane) +{ + int ret; + + /* should turn off the crtc */ + ret = plane->funcs->disable_plane(plane); + if (ret) + DRM_ERROR("failed to disable plane with busy fb\n"); + /* disconnect the plane from the fb and crtc: */ + __drm_framebuffer_unreference(plane->fb); + plane->fb = NULL; + plane->crtc = NULL; +} +EXPORT_SYMBOL(drm_plane_force_disable); + /** * drm_mode_create - create a new display mode * @dev: DRM device diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index adb3f9b..db7a885 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -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);