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From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	Archit Taneja <archit.taneja@gmail.com>,
	Daniel Vetter <daniel.vetter@intel.com>
Subject: [PATCH 02/10] drm: Extract drm_bridge.h
Date: Wed, 31 Aug 2016 18:09:05 +0200	[thread overview]
Message-ID: <20160831160913.12991-3-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <20160831160913.12991-1-daniel.vetter@ffwll.ch>

We don't want to burry the bridge structures kerneldoc in drm_crtc.h.

Cc: Archit Taneja <archit.taneja@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
 Documentation/gpu/drm-kms-helpers.rst |   7 ++
 drivers/gpu/drm/drm_bridge.c          |   5 +-
 include/drm/drm_bridge.h              | 218 ++++++++++++++++++++++++++++++++++
 include/drm/drm_connector.h           |   4 +
 include/drm/drm_crtc.h                | 187 +----------------------------
 include/drm/drm_mode_object.h         |   1 +
 include/drm/drm_modes.h               |   4 +
 7 files changed, 237 insertions(+), 189 deletions(-)
 create mode 100644 include/drm/drm_bridge.h

diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst
index 59fa3c11efab..48fc5a96bf95 100644
--- a/Documentation/gpu/drm-kms-helpers.rst
+++ b/Documentation/gpu/drm-kms-helpers.rst
@@ -126,6 +126,13 @@ Default bridge callback sequence
 .. kernel-doc:: drivers/gpu/drm/drm_bridge.c
    :doc: bridge callbacks
 
+
+Bridge Helper Reference
+-------------------------
+
+.. kernel-doc:: include/drm/drm_bridge.h
+   :internal:
+
 .. kernel-doc:: drivers/gpu/drm/drm_bridge.c
    :export:
 
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 484046664d6c..0ee052b7c21a 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -23,10 +23,9 @@
 
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 
-#include <drm/drm_crtc.h>
-
-#include "drm/drmP.h"
+#include <drm/drm_bridge.h>
 
 /**
  * DOC: overview
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
new file mode 100644
index 000000000000..530a1d6e8cde
--- /dev/null
+++ b/include/drm/drm_bridge.h
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __DRM_BRIDGE_H__
+#define __DRM_BRIDGE_H__
+
+#include <linux/list.h>
+#include <linux/ctype.h>
+#include <drm/drm_mode_object.h>
+#include <drm/drm_modes.h>
+
+struct drm_bridge;
+
+/**
+ * struct drm_bridge_funcs - drm_bridge control functions
+ */
+struct drm_bridge_funcs {
+	/**
+	 * @attach:
+	 *
+	 * This callback is invoked whenever our bridge is being attached to a
+	 * &drm_encoder.
+	 *
+	 * The attach callback is optional.
+	 *
+	 * RETURNS:
+	 *
+	 * Zero on success, error code on failure.
+	 */
+	int (*attach)(struct drm_bridge *bridge);
+
+	/**
+	 * @detach:
+	 *
+	 * This callback is invoked whenever our bridge is being detached from a
+	 * &drm_encoder.
+	 *
+	 * The detach callback is optional.
+	 */
+	void (*detach)(struct drm_bridge *bridge);
+
+	/**
+	 * @mode_fixup:
+	 *
+	 * This callback is used to validate and adjust a mode. The paramater
+	 * mode is the display mode that should be fed to the next element in
+	 * the display chain, either the final &drm_connector or the next
+	 * &drm_bridge. The parameter adjusted_mode is the input mode the bridge
+	 * requires. It can be modified by this callback and does not need to
+	 * match mode.
+	 *
+	 * This is the only hook that allows a bridge to reject a modeset. If
+	 * this function passes all other callbacks must succeed for this
+	 * configuration.
+	 *
+	 * The mode_fixup callback is optional.
+	 *
+	 * NOTE:
+	 *
+	 * This function is called in the check phase of atomic modesets, which
+	 * can be aborted for any reason (including on userspace's request to
+	 * just check whether a configuration would be possible). Drivers MUST
+	 * NOT touch any persistent state (hardware or software) or data
+	 * structures except the passed in @state parameter.
+	 *
+	 * RETURNS:
+	 *
+	 * True if an acceptable configuration is possible, false if the modeset
+	 * operation should be rejected.
+	 */
+	bool (*mode_fixup)(struct drm_bridge *bridge,
+			   const struct drm_display_mode *mode,
+			   struct drm_display_mode *adjusted_mode);
+	/**
+	 * @disable:
+	 *
+	 * This callback should disable the bridge. It is called right before
+	 * the preceding element in the display pipe is disabled. If the
+	 * preceding element is a bridge this means it's called before that
+	 * bridge's ->disable() function. If the preceding element is a
+	 * &drm_encoder it's called right before the encoder's ->disable(),
+	 * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
+	 *
+	 * The bridge can assume that the display pipe (i.e. clocks and timing
+	 * signals) feeding it is still running when this callback is called.
+	 *
+	 * The disable callback is optional.
+	 */
+	void (*disable)(struct drm_bridge *bridge);
+
+	/**
+	 * @post_disable:
+	 *
+	 * This callback should disable the bridge. It is called right after
+	 * the preceding element in the display pipe is disabled. If the
+	 * preceding element is a bridge this means it's called after that
+	 * bridge's ->post_disable() function. If the preceding element is a
+	 * &drm_encoder it's called right after the encoder's ->disable(),
+	 * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
+	 *
+	 * The bridge must assume that the display pipe (i.e. clocks and timing
+	 * singals) feeding it is no longer running when this callback is
+	 * called.
+	 *
+	 * The post_disable callback is optional.
+	 */
+	void (*post_disable)(struct drm_bridge *bridge);
+
+	/**
+	 * @mode_set:
+	 *
+	 * This callback should set the given mode on the bridge. It is called
+	 * after the ->mode_set() callback for the preceding element in the
+	 * display pipeline has been called already. The display pipe (i.e.
+	 * clocks and timing signals) is off when this function is called.
+	 */
+	void (*mode_set)(struct drm_bridge *bridge,
+			 struct drm_display_mode *mode,
+			 struct drm_display_mode *adjusted_mode);
+	/**
+	 * @pre_enable:
+	 *
+	 * This callback should enable the bridge. It is called right before
+	 * the preceding element in the display pipe is enabled. If the
+	 * preceding element is a bridge this means it's called before that
+	 * bridge's ->pre_enable() function. If the preceding element is a
+	 * &drm_encoder it's called right before the encoder's ->enable(),
+	 * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
+	 *
+	 * The display pipe (i.e. clocks and timing signals) feeding this bridge
+	 * will not yet be running when this callback is called. The bridge must
+	 * not enable the display link feeding the next bridge in the chain (if
+	 * there is one) when this callback is called.
+	 *
+	 * The pre_enable callback is optional.
+	 */
+	void (*pre_enable)(struct drm_bridge *bridge);
+
+	/**
+	 * @enable:
+	 *
+	 * This callback should enable the bridge. It is called right after
+	 * the preceding element in the display pipe is enabled. If the
+	 * preceding element is a bridge this means it's called after that
+	 * bridge's ->enable() function. If the preceding element is a
+	 * &drm_encoder it's called right after the encoder's ->enable(),
+	 * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
+	 *
+	 * The bridge can assume that the display pipe (i.e. clocks and timing
+	 * signals) feeding it is running when this callback is called. This
+	 * callback must enable the display link feeding the next bridge in the
+	 * chain if there is one.
+	 *
+	 * The enable callback is optional.
+	 */
+	void (*enable)(struct drm_bridge *bridge);
+};
+
+/**
+ * struct drm_bridge - central DRM bridge control structure
+ * @dev: DRM device this bridge belongs to
+ * @encoder: encoder to which this bridge is connected
+ * @next: the next bridge in the encoder chain
+ * @of_node: device node pointer to the bridge
+ * @list: to keep track of all added bridges
+ * @funcs: control functions
+ * @driver_private: pointer to the bridge driver's internal context
+ */
+struct drm_bridge {
+	struct drm_device *dev;
+	struct drm_encoder *encoder;
+	struct drm_bridge *next;
+#ifdef CONFIG_OF
+	struct device_node *of_node;
+#endif
+	struct list_head list;
+
+	const struct drm_bridge_funcs *funcs;
+	void *driver_private;
+};
+
+int drm_bridge_add(struct drm_bridge *bridge);
+void drm_bridge_remove(struct drm_bridge *bridge);
+struct drm_bridge *of_drm_find_bridge(struct device_node *np);
+int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
+void drm_bridge_detach(struct drm_bridge *bridge);
+
+bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
+			const struct drm_display_mode *mode,
+			struct drm_display_mode *adjusted_mode);
+void drm_bridge_disable(struct drm_bridge *bridge);
+void drm_bridge_post_disable(struct drm_bridge *bridge);
+void drm_bridge_mode_set(struct drm_bridge *bridge,
+			struct drm_display_mode *mode,
+			struct drm_display_mode *adjusted_mode);
+void drm_bridge_pre_enable(struct drm_bridge *bridge);
+void drm_bridge_enable(struct drm_bridge *bridge);
+
+#endif
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index e4e545e9516d..51a15deda161 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -27,6 +27,10 @@
 #include <linux/ctype.h>
 #include <drm/drm_mode_object.h>
 
+#include <uapi/drm/drm_mode.h>
+
+struct drm_device;
+
 struct drm_connector_helper_funcs;
 struct drm_device;
 struct drm_crtc;
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 2a642ae96127..bf9ee1b97c26 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -42,6 +42,7 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_encoder.h>
 #include <drm/drm_property.h>
+#include <drm/drm_bridge.h>
 
 struct drm_device;
 struct drm_mode_set;
@@ -1001,174 +1002,6 @@ struct drm_plane {
 };
 
 /**
- * struct drm_bridge_funcs - drm_bridge control functions
- */
-struct drm_bridge_funcs {
-	/**
-	 * @attach:
-	 *
-	 * This callback is invoked whenever our bridge is being attached to a
-	 * &drm_encoder.
-	 *
-	 * The attach callback is optional.
-	 *
-	 * RETURNS:
-	 *
-	 * Zero on success, error code on failure.
-	 */
-	int (*attach)(struct drm_bridge *bridge);
-
-	/**
-	 * @detach:
-	 *
-	 * This callback is invoked whenever our bridge is being detached from a
-	 * &drm_encoder.
-	 *
-	 * The detach callback is optional.
-	 */
-	void (*detach)(struct drm_bridge *bridge);
-
-	/**
-	 * @mode_fixup:
-	 *
-	 * This callback is used to validate and adjust a mode. The paramater
-	 * mode is the display mode that should be fed to the next element in
-	 * the display chain, either the final &drm_connector or the next
-	 * &drm_bridge. The parameter adjusted_mode is the input mode the bridge
-	 * requires. It can be modified by this callback and does not need to
-	 * match mode.
-	 *
-	 * This is the only hook that allows a bridge to reject a modeset. If
-	 * this function passes all other callbacks must succeed for this
-	 * configuration.
-	 *
-	 * The mode_fixup callback is optional.
-	 *
-	 * NOTE:
-	 *
-	 * This function is called in the check phase of atomic modesets, which
-	 * can be aborted for any reason (including on userspace's request to
-	 * just check whether a configuration would be possible). Drivers MUST
-	 * NOT touch any persistent state (hardware or software) or data
-	 * structures except the passed in @state parameter.
-	 *
-	 * RETURNS:
-	 *
-	 * True if an acceptable configuration is possible, false if the modeset
-	 * operation should be rejected.
-	 */
-	bool (*mode_fixup)(struct drm_bridge *bridge,
-			   const struct drm_display_mode *mode,
-			   struct drm_display_mode *adjusted_mode);
-	/**
-	 * @disable:
-	 *
-	 * This callback should disable the bridge. It is called right before
-	 * the preceding element in the display pipe is disabled. If the
-	 * preceding element is a bridge this means it's called before that
-	 * bridge's ->disable() function. If the preceding element is a
-	 * &drm_encoder it's called right before the encoder's ->disable(),
-	 * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
-	 *
-	 * The bridge can assume that the display pipe (i.e. clocks and timing
-	 * signals) feeding it is still running when this callback is called.
-	 *
-	 * The disable callback is optional.
-	 */
-	void (*disable)(struct drm_bridge *bridge);
-
-	/**
-	 * @post_disable:
-	 *
-	 * This callback should disable the bridge. It is called right after
-	 * the preceding element in the display pipe is disabled. If the
-	 * preceding element is a bridge this means it's called after that
-	 * bridge's ->post_disable() function. If the preceding element is a
-	 * &drm_encoder it's called right after the encoder's ->disable(),
-	 * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
-	 *
-	 * The bridge must assume that the display pipe (i.e. clocks and timing
-	 * singals) feeding it is no longer running when this callback is
-	 * called.
-	 *
-	 * The post_disable callback is optional.
-	 */
-	void (*post_disable)(struct drm_bridge *bridge);
-
-	/**
-	 * @mode_set:
-	 *
-	 * This callback should set the given mode on the bridge. It is called
-	 * after the ->mode_set() callback for the preceding element in the
-	 * display pipeline has been called already. The display pipe (i.e.
-	 * clocks and timing signals) is off when this function is called.
-	 */
-	void (*mode_set)(struct drm_bridge *bridge,
-			 struct drm_display_mode *mode,
-			 struct drm_display_mode *adjusted_mode);
-	/**
-	 * @pre_enable:
-	 *
-	 * This callback should enable the bridge. It is called right before
-	 * the preceding element in the display pipe is enabled. If the
-	 * preceding element is a bridge this means it's called before that
-	 * bridge's ->pre_enable() function. If the preceding element is a
-	 * &drm_encoder it's called right before the encoder's ->enable(),
-	 * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
-	 *
-	 * The display pipe (i.e. clocks and timing signals) feeding this bridge
-	 * will not yet be running when this callback is called. The bridge must
-	 * not enable the display link feeding the next bridge in the chain (if
-	 * there is one) when this callback is called.
-	 *
-	 * The pre_enable callback is optional.
-	 */
-	void (*pre_enable)(struct drm_bridge *bridge);
-
-	/**
-	 * @enable:
-	 *
-	 * This callback should enable the bridge. It is called right after
-	 * the preceding element in the display pipe is enabled. If the
-	 * preceding element is a bridge this means it's called after that
-	 * bridge's ->enable() function. If the preceding element is a
-	 * &drm_encoder it's called right after the encoder's ->enable(),
-	 * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
-	 *
-	 * The bridge can assume that the display pipe (i.e. clocks and timing
-	 * signals) feeding it is running when this callback is called. This
-	 * callback must enable the display link feeding the next bridge in the
-	 * chain if there is one.
-	 *
-	 * The enable callback is optional.
-	 */
-	void (*enable)(struct drm_bridge *bridge);
-};
-
-/**
- * struct drm_bridge - central DRM bridge control structure
- * @dev: DRM device this bridge belongs to
- * @encoder: encoder to which this bridge is connected
- * @next: the next bridge in the encoder chain
- * @of_node: device node pointer to the bridge
- * @list: to keep track of all added bridges
- * @funcs: control functions
- * @driver_private: pointer to the bridge driver's internal context
- */
-struct drm_bridge {
-	struct drm_device *dev;
-	struct drm_encoder *encoder;
-	struct drm_bridge *next;
-#ifdef CONFIG_OF
-	struct device_node *of_node;
-#endif
-	struct list_head list;
-
-	const struct drm_bridge_funcs *funcs;
-	void *driver_private;
-};
-
-/**
  * struct drm_crtc_commit - track modeset commits on a CRTC
  *
  * This structure is used to track pending modeset changes and atomic commit on
@@ -2188,22 +2021,4 @@ struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
 					   int hsize, int vsize, int fresh,
 					   bool rb);
 
-/* drm_bridge.c */
-extern int drm_bridge_add(struct drm_bridge *bridge);
-extern void drm_bridge_remove(struct drm_bridge *bridge);
-extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
-extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
-extern void drm_bridge_detach(struct drm_bridge *bridge);
-
-bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
-			const struct drm_display_mode *mode,
-			struct drm_display_mode *adjusted_mode);
-void drm_bridge_disable(struct drm_bridge *bridge);
-void drm_bridge_post_disable(struct drm_bridge *bridge);
-void drm_bridge_mode_set(struct drm_bridge *bridge,
-			struct drm_display_mode *mode,
-			struct drm_display_mode *adjusted_mode);
-void drm_bridge_pre_enable(struct drm_bridge *bridge);
-void drm_bridge_enable(struct drm_bridge *bridge);
-
 #endif /* __DRM_CRTC_H__ */
diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
index be3d93839ae2..43460b21d112 100644
--- a/include/drm/drm_mode_object.h
+++ b/include/drm/drm_mode_object.h
@@ -26,6 +26,7 @@
 #include <linux/kref.h>
 struct drm_object_properties;
 struct drm_property;
+struct drm_device;
 
 /**
  * struct drm_mode_object - base structure for modeset objects
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 986ed6ff635a..9934d91619c1 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -27,9 +27,13 @@
 #ifndef __DRM_MODES_H__
 #define __DRM_MODES_H__
 
+#include <linux/hdmi.h>
+
 #include <drm/drm_mode_object.h>
 #include <drm/drm_connector.h>
 
+struct videomode;
+
 /*
  * Note on terminology:  here, for brevity and convenience, we refer to connector
  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
-- 
2.9.3

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  parent reply	other threads:[~2016-08-31 16:09 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-31 16:09 [PATCH 00/10] More splitting&documenting for drm_crtc.c Daniel Vetter
2016-08-31 16:09 ` [PATCH 01/10] drm: Move a few macros away from drm_crtc.h Daniel Vetter
2016-09-06 16:59   ` [Intel-gfx] " Sean Paul
2016-09-08  0:05   ` Carlos Santa
2016-08-31 16:09 ` Daniel Vetter [this message]
2016-09-02  9:25   ` [PATCH 02/10] drm: Extract drm_bridge.h Archit Taneja
2016-08-31 16:09 ` [PATCH 03/10] drm: Move all decl for drm_edid.c to drm_edid.h Daniel Vetter
2016-09-06 16:59   ` Sean Paul
2016-09-19 14:28     ` Daniel Vetter
2016-08-31 16:09 ` [PATCH 04/10] drm: Extract drm_plane.[hc] Daniel Vetter
2016-09-06 16:59   ` [Intel-gfx] " Sean Paul
2016-09-19 13:11     ` Daniel Vetter
2016-09-21  7:32       ` Sean Paul
2016-08-31 16:09 ` [PATCH 05/10] drm/doc: Polish for drm_plane.[hc] Daniel Vetter
2016-09-02  9:30   ` Archit Taneja
2016-09-19 13:13     ` Daniel Vetter
2016-09-21  6:38       ` Archit Taneja
2016-08-31 16:09 ` [PATCH 06/10] drm: Conslidate blending properties in drm_blend.[hc] Daniel Vetter
2016-09-06 16:59   ` Sean Paul
2016-08-31 16:09 ` [PATCH 07/10] drm/doc: Polish plane composition property docs Daniel Vetter
2016-09-06 16:59   ` Sean Paul
2016-08-31 16:09 ` [PATCH 08/10] drm: Extract drm_color_mgmt.[hc] Daniel Vetter
2016-09-01  9:51   ` [Intel-gfx] " Lionel Landwerlin
2016-08-31 16:09 ` [PATCH 09/10] drm/doc: Document color space handling Daniel Vetter
2016-09-01 10:16   ` Lionel Landwerlin
2016-09-06 16:59   ` [Intel-gfx] " Sean Paul
2016-08-31 16:09 ` [PATCH 10/10] drm: Remove dirty property from docs Daniel Vetter
2016-09-06 16:59   ` Sean Paul
2016-09-01  9:20 ` ✗ Fi.CI.BAT: failure for More splitting&documenting for drm_crtc.c Patchwork

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