drm/crtc: add drmm_crtc_alloc_with_planes()

Add an alternative to drm_crtc_init_with_planes() that allocates
and initializes a crtc and registers drm_crtc_cleanup() with
drmm_add_action_or_reset().

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 33 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 5f43d64d2a07..540e2e43ec93 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1223,6 +1223,39 @@ int drm_crtc_init_with_planes(struct drm_device *dev,
 			      const char *name, ...);
 void drm_crtc_cleanup(struct drm_crtc *crtc);
 
+__printf(7, 8)
+void *__drmm_crtc_alloc_with_planes(struct drm_device *dev,
+				    size_t size, size_t offset,
+				    struct drm_plane *primary,
+				    struct drm_plane *cursor,
+				    const struct drm_crtc_funcs *funcs,
+				    const char *name, ...);
+
+/**
+ * drm_crtc_alloc_with_planes - Allocate and initialize a new CRTC object with
+ *    specified primary and cursor planes.
+ * @dev: DRM device
+ * @type: the type of the struct which contains struct &drm_crtc
+ * @member: the name of the &drm_crtc within @type.
+ * @primary: Primary plane for CRTC
+ * @cursor: Cursor plane for CRTC
+ * @funcs: callbacks for the new CRTC
+ * @name: printf style format string for the CRTC name, or NULL for default name
+ *
+ * Allocates and initializes a new crtc object. Cleanup is automatically
+ * handled through registering drmm_crtc_cleanup() with drmm_add_action().
+ *
+ * The @drm_crtc_funcs.destroy hook must be NULL.
+ *
+ * Returns:
+ * Pointer to new crtc, or ERR_PTR on failure.
+ */
+#define drmm_crtc_alloc_with_planes(dev, type, member, primary, cursor, funcs, name, ...) \
+	((type *)__drmm_crtc_alloc_with_planes(dev, sizeof(type), \
+					       offsetof(type, member), \
+					       primary, cursor, funcs, \
+					       name, ##__VA_ARGS__))
+
 /**
  * drm_crtc_index - find the index of a registered CRTC
  * @crtc: CRTC to find index for