[PATCH 09/10] drm: Move tile group code into drm_connector.c
Daniel Vetter
daniel.vetter at ffwll.ch
Mon Nov 14 11:58:24 UTC 2016
And also put the overview section into the KMS Properties part of the
docs, instead of randomly-placed within the helpers - this is part of
the uabi.
With this patch I think drm_crtc.[hc] is cleaned up and entirely
documented.
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
Documentation/gpu/drm-kms-helpers.rst | 8 ---
Documentation/gpu/drm-kms.rst | 6 ++
drivers/gpu/drm/drm_connector.c | 104 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_crtc.c | 99 --------------------------------
include/drm/drm_connector.h | 24 ++++++++
include/drm/drm_crtc.h | 15 -----
6 files changed, 134 insertions(+), 122 deletions(-)
diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst
index bb4254d19cbb..4ca77f675967 100644
--- a/Documentation/gpu/drm-kms-helpers.rst
+++ b/Documentation/gpu/drm-kms-helpers.rst
@@ -261,14 +261,6 @@ Plane Helper Reference
.. kernel-doc:: drivers/gpu/drm/drm_plane_helper.c
:export:
-Tile group
-==========
-
-# FIXME: This should probably be moved into a property documentation section
-
-.. kernel-doc:: drivers/gpu/drm/drm_crtc.c
- :doc: Tile group
-
Auxiliary Modeset Helpers
=========================
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index a8ff2c87c0e9..568f3c2b6e46 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -281,6 +281,12 @@ Color Management Properties
.. kernel-doc:: drivers/gpu/drm/drm_color_mgmt.c
:export:
+Tile Group Property
+-------------------
+
+.. kernel-doc:: drivers/gpu/drm/drm_connector.c
+ :doc: Tile group
+
Existing KMS Properties
-----------------------
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 0b89577aa9f8..f370663b49f2 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1126,3 +1126,107 @@ int drm_mode_getconnector(struct drm_device *dev, void *data,
return ret;
}
+
+/**
+ * DOC: Tile group
+ *
+ * Tile groups are used to represent tiled monitors with a unique integer
+ * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle,
+ * we store this in a tile group, so we have a common identifier for all tiles
+ * in a monitor group. The property is called "TILE". Drivers can manage tile
+ * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and
+ * drm_mode_get_tile_group(). But this is only needed for internal panels where
+ * the tile group information is exposed through a non-standard way.
+ */
+
+static void drm_tile_group_free(struct kref *kref)
+{
+ struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
+ struct drm_device *dev = tg->dev;
+ mutex_lock(&dev->mode_config.idr_mutex);
+ idr_remove(&dev->mode_config.tile_idr, tg->id);
+ mutex_unlock(&dev->mode_config.idr_mutex);
+ kfree(tg);
+}
+
+/**
+ * drm_mode_put_tile_group - drop a reference to a tile group.
+ * @dev: DRM device
+ * @tg: tile group to drop reference to.
+ *
+ * drop reference to tile group and free if 0.
+ */
+void drm_mode_put_tile_group(struct drm_device *dev,
+ struct drm_tile_group *tg)
+{
+ kref_put(&tg->refcount, drm_tile_group_free);
+}
+EXPORT_SYMBOL(drm_mode_put_tile_group);
+
+/**
+ * drm_mode_get_tile_group - get a reference to an existing tile group
+ * @dev: DRM device
+ * @topology: 8-bytes unique per monitor.
+ *
+ * Use the unique bytes to get a reference to an existing tile group.
+ *
+ * RETURNS:
+ * tile group or NULL if not found.
+ */
+struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
+ char topology[8])
+{
+ struct drm_tile_group *tg;
+ int id;
+ mutex_lock(&dev->mode_config.idr_mutex);
+ idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
+ if (!memcmp(tg->group_data, topology, 8)) {
+ if (!kref_get_unless_zero(&tg->refcount))
+ tg = NULL;
+ mutex_unlock(&dev->mode_config.idr_mutex);
+ return tg;
+ }
+ }
+ mutex_unlock(&dev->mode_config.idr_mutex);
+ return NULL;
+}
+EXPORT_SYMBOL(drm_mode_get_tile_group);
+
+/**
+ * drm_mode_create_tile_group - create a tile group from a displayid description
+ * @dev: DRM device
+ * @topology: 8-bytes unique per monitor.
+ *
+ * Create a tile group for the unique monitor, and get a unique
+ * identifier for the tile group.
+ *
+ * RETURNS:
+ * new tile group or error.
+ */
+struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
+ char topology[8])
+{
+ struct drm_tile_group *tg;
+ int ret;
+
+ tg = kzalloc(sizeof(*tg), GFP_KERNEL);
+ if (!tg)
+ return ERR_PTR(-ENOMEM);
+
+ kref_init(&tg->refcount);
+ memcpy(tg->group_data, topology, 8);
+ tg->dev = dev;
+
+ mutex_lock(&dev->mode_config.idr_mutex);
+ ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
+ if (ret >= 0) {
+ tg->id = ret;
+ } else {
+ kfree(tg);
+ tg = ERR_PTR(ret);
+ }
+
+ mutex_unlock(&dev->mode_config.idr_mutex);
+ return tg;
+}
+EXPORT_SYMBOL(drm_mode_create_tile_group);
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 6e7d376d809c..411c1beabaf1 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -699,102 +699,3 @@ void drm_mode_config_cleanup(struct drm_device *dev)
drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
}
EXPORT_SYMBOL(drm_mode_config_cleanup);
-
-/**
- * DOC: Tile group
- *
- * Tile groups are used to represent tiled monitors with a unique
- * integer identifier. Tiled monitors using DisplayID v1.3 have
- * a unique 8-byte handle, we store this in a tile group, so we
- * have a common identifier for all tiles in a monitor group.
- */
-static void drm_tile_group_free(struct kref *kref)
-{
- struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
- struct drm_device *dev = tg->dev;
- mutex_lock(&dev->mode_config.idr_mutex);
- idr_remove(&dev->mode_config.tile_idr, tg->id);
- mutex_unlock(&dev->mode_config.idr_mutex);
- kfree(tg);
-}
-
-/**
- * drm_mode_put_tile_group - drop a reference to a tile group.
- * @dev: DRM device
- * @tg: tile group to drop reference to.
- *
- * drop reference to tile group and free if 0.
- */
-void drm_mode_put_tile_group(struct drm_device *dev,
- struct drm_tile_group *tg)
-{
- kref_put(&tg->refcount, drm_tile_group_free);
-}
-
-/**
- * drm_mode_get_tile_group - get a reference to an existing tile group
- * @dev: DRM device
- * @topology: 8-bytes unique per monitor.
- *
- * Use the unique bytes to get a reference to an existing tile group.
- *
- * RETURNS:
- * tile group or NULL if not found.
- */
-struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
- char topology[8])
-{
- struct drm_tile_group *tg;
- int id;
- mutex_lock(&dev->mode_config.idr_mutex);
- idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
- if (!memcmp(tg->group_data, topology, 8)) {
- if (!kref_get_unless_zero(&tg->refcount))
- tg = NULL;
- mutex_unlock(&dev->mode_config.idr_mutex);
- return tg;
- }
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
- return NULL;
-}
-EXPORT_SYMBOL(drm_mode_get_tile_group);
-
-/**
- * drm_mode_create_tile_group - create a tile group from a displayid description
- * @dev: DRM device
- * @topology: 8-bytes unique per monitor.
- *
- * Create a tile group for the unique monitor, and get a unique
- * identifier for the tile group.
- *
- * RETURNS:
- * new tile group or error.
- */
-struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
- char topology[8])
-{
- struct drm_tile_group *tg;
- int ret;
-
- tg = kzalloc(sizeof(*tg), GFP_KERNEL);
- if (!tg)
- return ERR_PTR(-ENOMEM);
-
- kref_init(&tg->refcount);
- memcpy(tg->group_data, topology, 8);
- tg->dev = dev;
-
- mutex_lock(&dev->mode_config.idr_mutex);
- ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
- if (ret >= 0) {
- tg->id = ret;
- } else {
- kfree(tg);
- tg = ERR_PTR(ret);
- }
-
- mutex_unlock(&dev->mode_config.idr_mutex);
- return tg;
-}
-EXPORT_SYMBOL(drm_mode_create_tile_group);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 3e9727264b65..34f9741ebb5b 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -775,6 +775,30 @@ int drm_mode_connector_update_edid_property(struct drm_connector *connector,
const struct edid *edid);
/**
+ * struct drm_tile_group - Tile group metadata
+ * @refcount: reference count
+ * @dev: DRM device
+ * @id: tile group id exposed to userspace
+ * @group_data: Sink-private data identifying this group
+ *
+ * @group_data corresponds to displayid vend/prod/serial for external screens
+ * with an EDID.
+ */
+struct drm_tile_group {
+ struct kref refcount;
+ struct drm_device *dev;
+ int id;
+ u8 group_data[8];
+};
+
+struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
+ char topology[8]);
+struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
+ char topology[8]);
+void drm_mode_put_tile_group(struct drm_device *dev,
+ struct drm_tile_group *tg);
+
+/**
* drm_for_each_connector - iterate over all connectors
* @connector: the loop cursor
* @dev: the DRM device
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 98de488a95a5..cf96b393091a 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -67,14 +67,6 @@ static inline uint64_t I642U64(int64_t val)
return (uint64_t)*((uint64_t *)&val);
}
-/* data corresponds to displayid vend/prod/serial */
-struct drm_tile_group {
- struct kref refcount;
- struct drm_device *dev;
- int id;
- u8 group_data[8];
-};
-
struct drm_crtc;
struct drm_encoder;
struct drm_pending_vblank_event;
@@ -810,13 +802,6 @@ extern int drm_crtc_force_disable_all(struct drm_device *dev);
extern int drm_mode_set_config_internal(struct drm_mode_set *set);
-extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
- char topology[8]);
-extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
- char topology[8]);
-extern void drm_mode_put_tile_group(struct drm_device *dev,
- struct drm_tile_group *tg);
-
/* Helpers */
static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
uint32_t id)
--
2.10.2
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