Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge drm-next - I need to backmerge drm-intel-fixes patches
touching the error capture code to be able to merge Ben's cleanup
patches.

Conflicts:
	drivers/gpu/drm/i915/i915_gpu_error.c

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 26 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index e963470efd39..71727b6210ae 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -931,6 +931,19 @@ extern int drm_crtc_init(struct drm_device *dev,
                          struct drm_crtc *crtc,
                          const struct drm_crtc_funcs *funcs);
 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
+extern unsigned int drm_crtc_index(struct drm_crtc *crtc);
+
+/**
+ * drm_crtc_mask - find the mask of a registered CRTC
+ * @crtc: CRTC to find mask for
+ *
+ * Given a registered CRTC, return the mask bit of that CRTC for an
+ * encoder's possible_crtcs field.
+ */
+static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
+{
+        return 1 << drm_crtc_index(crtc);
+}
 
 extern void drm_connector_ida_init(void);
 extern void drm_connector_ida_destroy(void);
@@ -952,6 +965,19 @@ extern int drm_encoder_init(struct drm_device *dev,
                             const struct drm_encoder_funcs *funcs,
                             int encoder_type);
 
+/**
+ * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
+ * @encoder: encoder to test
+ * @crtc: crtc to test
+ *
+ * Return false if @encoder can't be driven by @crtc, true otherwise.
+ */
+static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
+                                       struct drm_crtc *crtc)
+{
+        return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
+}
+
 extern int drm_plane_init(struct drm_device *dev,
                           struct drm_plane *plane,
                           unsigned long possible_crtcs,