drm/atomic: add new drm_debug bit to dump atomic state

The contents of drm_{plane,crtc,connector}_state is dumped before
commit.  If a driver extends any of the state structs, it can implement
the corresponding funcs->atomic_print_state() to add it's own driver
specific state.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[seanpaul resolved conflict in drm_plane.h]
Signed-off-by: Sean Paul <seanpaul@chromium.org>

4 files changed, 40 insertions, 0 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index e92c904..4e58137 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -135,6 +135,7 @@ struct dma_buf_attachment;
 #define DRM_UT_PRIME		0x08
 #define DRM_UT_ATOMIC		0x10
 #define DRM_UT_VBL		0x20
+#define DRM_UT_STATE		0x40
 
 extern __printf(6, 7)
 void drm_dev_printk(const struct device *dev, const char *level,
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index ac9d7d8..3e97272 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -37,6 +37,7 @@ struct drm_crtc;
 struct drm_encoder;
 struct drm_property;
 struct drm_property_blob;
+struct drm_printer;
 struct edid;
 
 enum drm_connector_force {
@@ -481,6 +482,18 @@ struct drm_connector_funcs {
 				   const struct drm_connector_state *state,
 				   struct drm_property *property,
 				   uint64_t *val);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_connector_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_connector_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_connector_state *state);
 };
 
 /* mode specified on the command line */
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index fa1aa21..8cca2a8 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -53,6 +53,7 @@ struct drm_device;
 struct drm_mode_set;
 struct drm_file;
 struct drm_clip_rect;
+struct drm_printer;
 struct device_node;
 struct dma_fence;
 struct edid;
@@ -594,6 +595,18 @@ struct drm_crtc_funcs {
 	 */
 	int (*set_crc_source)(struct drm_crtc *crtc, const char *source,
 			      size_t *values_cnt);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_crtc_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_crtc_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_crtc_state *state);
 };
 
 /**
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index a421cb5..63d4e50 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -28,6 +28,7 @@
 #include <drm/drm_mode_object.h>
 
 struct drm_crtc;
+struct drm_printer;
 
 /**
  * struct drm_plane_state - mutable plane state
@@ -370,6 +371,18 @@ struct drm_plane_funcs {
 	 * before data structures are torndown.
 	 */
 	void (*early_unregister)(struct drm_plane *plane);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_plane_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_plane_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_plane_state *state);
 };
 
 /**