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From:   Geert Uytterhoeven <geert+renesas@glider.be>
To:     David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <mripard@kernel.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Jonathan Corbet <corbet@lwn.net>,
        Jyri Sarha <jyri.sarha@iki.fi>,
        Tomi Valkeinen <tomba@kernel.org>,
        Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
        Biju Das <biju.das.jz@bp.renesas.com>
Cc:     dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org,
        linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
        Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH 2/3] drm: Remove references to removed transitional helpers
Date:   Fri,  2 Jun 2023 11:11:35 +0200
Message-Id: <14e091fc522aa63a3e33bda1016e5fa946d47d18.1685696114.git.geert+renesas@glider.be>
In-Reply-To: <cover.1685696114.git.geert+renesas@glider.be>
References: <cover.1685696114.git.geert+renesas@glider.be>
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The transitional helpers were removed a long time ago, but some
references stuck.  Remove them.

Fixes: 21ebe615c16994f3 ("drm: Remove transitional helpers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
It doesn't look like the drm_encoder_helper_funcs were ever used by the
transitional plane helpers?
---
 drivers/gpu/drm/drm_plane_helper.c       |  8 ----
 include/drm/drm_crtc.h                   |  5 ---
 include/drm/drm_modeset_helper_vtables.h | 48 +++++++++++-------------
 3 files changed, 21 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
index c91e454eba097942..be45bdb58d849653 100644
--- a/drivers/gpu/drm/drm_plane_helper.c
+++ b/drivers/gpu/drm/drm_plane_helper.c
@@ -51,14 +51,6 @@
  * planes, and newly merged drivers must not rely upon these transitional
  * helpers.
  *
- * The second part also implements transitional helpers which allow drivers to
- * gradually switch to the atomic helper infrastructure for plane updates. Once
- * that switch is complete drivers shouldn't use these any longer, instead using
- * the proper legacy implementations for update and disable plane hooks provided
- * by the atomic helpers.
- *
- * Again drivers are strongly urged to switch to the new interfaces.
- *
  * The plane helpers share the function table structures with other helpers,
  * specifically also the atomic helpers. See &struct drm_plane_helper_funcs for
  * the details.
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 8e1cbc75143ef216..8b48a1974da3143c 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -77,11 +77,6 @@ struct drm_plane_helper_funcs;
  * intended to indicate whether a full modeset is needed, rather than strictly
  * describing what has changed in a commit. See also:
  * drm_atomic_crtc_needs_modeset()
- *
- * WARNING: Transitional helpers (like drm_helper_crtc_mode_set() or
- * drm_helper_crtc_mode_set_base()) do not maintain many of the derived control
- * state like @plane_mask so drivers not converted over to atomic helpers should
- * not rely on these being accurate!
  */
 struct drm_crtc_state {
 	/** @crtc: backpointer to the CRTC */
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 965faf082a6d1acb..e3c3ac615909474b 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -59,8 +59,8 @@ enum mode_set_atomic {
 /**
  * struct drm_crtc_helper_funcs - helper operations for CRTCs
  *
- * These hooks are used by the legacy CRTC helpers, the transitional plane
- * helpers and the new atomic modesetting helpers.
+ * These hooks are used by the legacy CRTC helpers and the new atomic
+ * modesetting helpers.
  */
 struct drm_crtc_helper_funcs {
 	/**
@@ -216,9 +216,7 @@ struct drm_crtc_helper_funcs {
 	 *
 	 * This callback is used to update the display mode of a CRTC without
 	 * changing anything of the primary plane configuration. This fits the
-	 * requirement of atomic and hence is used by the atomic helpers. It is
-	 * also used by the transitional plane helpers to implement a
-	 * @mode_set hook in drm_helper_crtc_mode_set().
+	 * requirement of atomic and hence is used by the atomic helpers.
 	 *
 	 * Note that the display pipe is completely off when this function is
 	 * called. Atomic drivers which need hardware to be running before they
@@ -333,8 +331,8 @@ struct drm_crtc_helper_funcs {
 	 * all updated. Again the recommendation is to just call check helpers
 	 * until a maximal configuration is reached.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional.
 	 *
 	 * NOTE:
 	 *
@@ -373,8 +371,8 @@ struct drm_crtc_helper_funcs {
 	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
 	 * the tradeoffs and variants of plane commit helpers.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional.
 	 */
 	void (*atomic_begin)(struct drm_crtc *crtc,
 			     struct drm_atomic_state *state);
@@ -397,8 +395,8 @@ struct drm_crtc_helper_funcs {
 	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
 	 * the tradeoffs and variants of plane commit helpers.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional.
 	 */
 	void (*atomic_flush)(struct drm_crtc *crtc,
 			     struct drm_atomic_state *state);
@@ -507,8 +505,8 @@ static inline void drm_crtc_helper_add(struct drm_crtc *crtc,
 /**
  * struct drm_encoder_helper_funcs - helper operations for encoders
  *
- * These hooks are used by the legacy CRTC helpers, the transitional plane
- * helpers and the new atomic modesetting helpers.
+ * These hooks are used by the legacy CRTC helpers and the new atomic
+ * modesetting helpers.
  */
 struct drm_encoder_helper_funcs {
 	/**
@@ -1185,8 +1183,7 @@ static inline void drm_connector_helper_add(struct drm_connector *connector,
 /**
  * struct drm_plane_helper_funcs - helper operations for planes
  *
- * These functions are used by the atomic helpers and by the transitional plane
- * helpers.
+ * These functions are used by the atomic helpers.
  */
 struct drm_plane_helper_funcs {
 	/**
@@ -1221,9 +1218,8 @@ struct drm_plane_helper_funcs {
 	 * The helpers will call @cleanup_fb with matching arguments for every
 	 * successful call to this hook.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional. See @begin_fb_access
-	 * for preparing per-commit resources.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional. See @begin_fb_access for preparing per-commit resources.
 	 *
 	 * RETURNS:
 	 *
@@ -1240,8 +1236,8 @@ struct drm_plane_helper_funcs {
 	 * This hook is called to clean up any resources allocated for the given
 	 * framebuffer and plane configuration in @prepare_fb.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional.
 	 */
 	void (*cleanup_fb)(struct drm_plane *plane,
 			   struct drm_plane_state *old_state);
@@ -1295,8 +1291,8 @@ struct drm_plane_helper_funcs {
 	 * all updated. Again the recommendation is to just call check helpers
 	 * until a maximal configuration is reached.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional.
 	 *
 	 * NOTE:
 	 *
@@ -1326,8 +1322,7 @@ struct drm_plane_helper_funcs {
 	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
 	 * the tradeoffs and variants of plane commit helpers.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional.
+	 * This callback is used by the atomic modeset helpers, but it is optional.
 	 */
 	void (*atomic_update)(struct drm_plane *plane,
 			      struct drm_atomic_state *state);
@@ -1376,9 +1371,8 @@ struct drm_plane_helper_funcs {
 	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
 	 * the tradeoffs and variants of plane commit helpers.
 	 *
-	 * This callback is used by the atomic modeset helpers and by the
-	 * transitional plane helpers, but it is optional. It's intended to
-	 * reverse the effects of @atomic_enable.
+	 * This callback is used by the atomic modeset helpers, but it is
+	 * optional. It's intended to reverse the effects of @atomic_enable.
 	 */
 	void (*atomic_disable)(struct drm_plane *plane,
 			       struct drm_atomic_state *state);
-- 
2.34.1