drm: Add callbacks for late registering
Like what has been done for connectors add callbacks on encoder,
crtc and plane to let driver do actions after drm device registration.
Correspondingly, add callbacks called before unregister drm device.
version 2:
add drm_modeset_register_all() and drm_modeset_unregister_all()
to centralize all calls
version 3:
in error case unwind registers in drm_modeset_register_all
fix uninitialed return value
inverse order of unregistration in drm_modeset_unregister_all
version 4:
move function definitions in drm_crtc_internal.h
remove not needed documentation
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1466519829-4000-1-git-send-email-benjamin.gaignard@linaro.org
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index e7c862b..a717238 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -608,6 +608,31 @@
return num;
}
+static int drm_crtc_register_all(struct drm_device *dev)
+{
+ struct drm_crtc *crtc;
+ int ret = 0;
+
+ drm_for_each_crtc(crtc, dev) {
+ if (crtc->funcs->late_register)
+ ret = crtc->funcs->late_register(crtc);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void drm_crtc_unregister_all(struct drm_device *dev)
+{
+ struct drm_crtc *crtc;
+
+ drm_for_each_crtc(crtc, dev) {
+ if (crtc->funcs->early_unregister)
+ crtc->funcs->early_unregister(crtc);
+ }
+}
+
/**
* drm_crtc_init_with_planes - Initialise a new CRTC object with
* specified primary and cursor planes.
@@ -1102,6 +1127,31 @@
}
EXPORT_SYMBOL(drm_connector_unregister_all);
+static int drm_encoder_register_all(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+ int ret = 0;
+
+ drm_for_each_encoder(encoder, dev) {
+ if (encoder->funcs->late_register)
+ ret = encoder->funcs->late_register(encoder);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void drm_encoder_unregister_all(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+
+ drm_for_each_encoder(encoder, dev) {
+ if (encoder->funcs->early_unregister)
+ encoder->funcs->early_unregister(encoder);
+ }
+}
+
/**
* drm_encoder_init - Init a preallocated encoder
* @dev: drm device
@@ -1290,6 +1340,31 @@
}
EXPORT_SYMBOL(drm_universal_plane_init);
+static int drm_plane_register_all(struct drm_device *dev)
+{
+ struct drm_plane *plane;
+ int ret = 0;
+
+ drm_for_each_plane(plane, dev) {
+ if (plane->funcs->late_register)
+ ret = plane->funcs->late_register(plane);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void drm_plane_unregister_all(struct drm_device *dev)
+{
+ struct drm_plane *plane;
+
+ drm_for_each_plane(plane, dev) {
+ if (plane->funcs->early_unregister)
+ plane->funcs->early_unregister(plane);
+ }
+}
+
/**
* drm_plane_init - Initialize a legacy plane
* @dev: DRM device
@@ -1412,6 +1487,46 @@
}
EXPORT_SYMBOL(drm_plane_force_disable);
+int drm_modeset_register_all(struct drm_device *dev)
+{
+ int ret;
+
+ ret = drm_plane_register_all(dev);
+ if (ret)
+ goto err_plane;
+
+ ret = drm_crtc_register_all(dev);
+ if (ret)
+ goto err_crtc;
+
+ ret = drm_encoder_register_all(dev);
+ if (ret)
+ goto err_encoder;
+
+ ret = drm_connector_register_all(dev);
+ if (ret)
+ goto err_connector;
+
+ return 0;
+
+err_connector:
+ drm_encoder_unregister_all(dev);
+err_encoder:
+ drm_crtc_unregister_all(dev);
+err_crtc:
+ drm_plane_unregister_all(dev);
+err_plane:
+ return ret;
+}
+
+void drm_modeset_unregister_all(struct drm_device *dev)
+{
+ drm_connector_unregister_all(dev);
+ drm_encoder_unregister_all(dev);
+ drm_crtc_unregister_all(dev);
+ drm_plane_unregister_all(dev);
+}
+
static int drm_mode_create_standard_properties(struct drm_device *dev)
{
struct drm_property *prop;