drm: Add drm/drm_util.h header file

We have a bunch of neat little macros all over the place which should
move to kernel.h. But some of them died in bikesheds on lkml, and we
need a decent home for them.

Start out by moving the for_each_if macro there.

v2: Rename to drm_util.h instead (Dave&Sean)

Cc: Sean Paul <seanpaul@chromium.org>
Acked-by: Sean Paul <seanpaul@chromium.org>
Cc: Dave Airlie <airlied@gmail.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-1-daniel.vetter@ffwll.ch

7 files changed, 37 insertions, 3 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index f7a19c2a7a807..05350424a4d3b 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -110,7 +110,4 @@ static inline bool drm_can_sleep(void)
 	return true;
 }
 
-/* helper for handling conditionals in various for_each macros */
-#define for_each_if(condition) if (!(condition)) {} else
-
 #endif
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index da9d95a195809..d621232a469a8 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -29,6 +29,7 @@
 #define DRM_ATOMIC_H_
 
 #include <drm/drm_crtc.h>
+#include <drm/drm_util.h>
 
 /**
  * struct drm_crtc_commit - track modeset commits on a CRTC
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index f4c7ed876c974..657af7b393790 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -31,6 +31,7 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_modeset_helper.h>
+#include <drm/drm_util.h>
 
 struct drm_atomic_state;
 struct drm_private_obj;
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 97ea41dc678fe..91a877fa00cb5 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -28,6 +28,7 @@
 #include <linux/ctype.h>
 #include <linux/hdmi.h>
 #include <drm/drm_mode_object.h>
+#include <drm/drm_util.h>
 
 #include <uapi/drm/drm_mode.h>
 
diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
index 4f597c0730b48..70cfca03d812e 100644
--- a/include/drm/drm_encoder.h
+++ b/include/drm/drm_encoder.h
@@ -28,6 +28,7 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_mode.h>
 #include <drm/drm_mode_object.h>
+#include <drm/drm_util.h>
 
 struct drm_encoder;
 
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 16f5b66684ca4..6760e49d8c855 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -27,6 +27,7 @@
 #include <linux/ctype.h>
 #include <drm/drm_mode_object.h>
 #include <drm/drm_color_mgmt.h>
+#include <drm/drm_util.h>
 
 struct drm_crtc;
 struct drm_printer;
diff --git a/include/drm/drm_util.h b/include/drm/drm_util.h
new file mode 100644
index 0000000000000..88abdca89baad
--- /dev/null
+++ b/include/drm/drm_util.h
@@ -0,0 +1,32 @@
+/*
+ * Internal Header for the Direct Rendering Manager
+ *
+ * Copyright 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_UTIL_H_
+#define _DRM_UTIL_H_
+
+/* helper for handling conditionals in various for_each macros */
+#define for_each_if(condition) if (!(condition)) {} else
+
+#endif