Add a new plane initialization interface for universal plane support
that allows a specific plane type (primary, cursor, or overlay) to
be specified.
drm_plane_init() remains as a compatibility API to reduce churn in
existing drivers. The 'bool priv' parameter has been changed to
'bool is_primary' under the assumption that all existing uses of
private planes were representing primary planes.
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 84 ++++++++++++++++++++++++++++++----------------
include/drm/drm_crtc.h | 9 ++++-
2 files changed, 63 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 99e6b22..a7384d7 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1000,26 +1000,25 @@ void drm_encoder_cleanup(struct drm_encoder *encoder)
EXPORT_SYMBOL(drm_encoder_cleanup);
/**
- * drm_plane_init - Initialise a new plane object
+ * drm_universal_plane_init - Initialize a new universal plane object
* @dev: DRM device
* @plane: plane object to init
* @possible_crtcs: bitmask of possible CRTCs
* @funcs: callbacks for the new plane
* @formats: array of supported formats (%DRM_FORMAT_*)
* @format_count: number of elements in @formats
- * @priv: plane is private (hidden from userspace)?
+ * @type: type of plane (overlay, primary, cursor)
*
- * Inits a preallocate plane object created as base part of a driver plane
- * object.
+ * Initializes a plane object of type @type.
*
* Returns:
* Zero on success, error code on failure.
*/
-int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
- unsigned long possible_crtcs,
- const struct drm_plane_funcs *funcs,
- const uint32_t *formats, uint32_t format_count,
- bool priv)
+int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ unsigned long possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, uint32_t format_count,
+ enum drm_plane_type type)
{
int ret;
@@ -1044,26 +1043,53 @@ int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
plane->format_count = format_count;
plane->possible_crtcs = possible_crtcs;
- plane->type = DRM_PLANE_TYPE_OVERLAY;
+ plane->type = type;
- /* private planes are not exposed to userspace, but depending on
- * display hardware, might be convenient to allow sharing programming
- * for the scanout engine with the crtc implementation.
- */
- if (!priv) {
- list_add_tail(&plane->head, &dev->mode_config.plane_list);
- dev->mode_config.num_total_plane++;
- if (plane->type == DRM_PLANE_TYPE_OVERLAY)
- dev->mode_config.num_overlay_plane++;
- } else {
- INIT_LIST_HEAD(&plane->head);
- }
+ list_add_tail(&plane->head, &dev->mode_config.plane_list);
+ dev->mode_config.num_total_plane++;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ dev->mode_config.num_overlay_plane++;
+
+ drm_object_attach_property(&plane->base,
+ dev->mode_config.plane_type_property,
+ plane->type);
out:
drm_modeset_unlock_all(dev);
return ret;
}
+EXPORT_SYMBOL(drm_universal_plane_init);
+
+/**
+ * drm_plane_init - Initialize a legacy plane
+ * @dev: DRM device
+ * @plane: plane object to init
+ * @possible_crtcs: bitmask of possible CRTCs
+ * @funcs: callbacks for the new plane
+ * @formats: array of supported formats (%DRM_FORMAT_*)
+ * @format_count: number of elements in @formats
+ * @is_primary: plane type (primary vs overlay)
+ *
+ * Legacy API to initialize a DRM plane.
+ *
+ * New drivers should call drm_universal_plane_init() instead.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ unsigned long possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, uint32_t format_count,
+ bool is_primary)
+{
+ enum drm_plane_type type;
+
+ type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
+ return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
+ formats, format_count, type);
+}
EXPORT_SYMBOL(drm_plane_init);
/**
@@ -1081,13 +1107,13 @@ void drm_plane_cleanup(struct drm_plane *plane)
drm_modeset_lock_all(dev);
kfree(plane->format_types);
drm_mode_object_put(dev, &plane->base);
- /* if not added to a list, it must be a private plane */
- if (!list_empty(&plane->head)) {
- list_del(&plane->head);
- dev->mode_config.num_total_plane--;
- if (plane->type == DRM_PLANE_TYPE_OVERLAY)
- dev->mode_config.num_overlay_plane--;
- }
+
+ BUG_ON(list_empty(&plane->head));
+
+ list_del(&plane->head);
+ dev->mode_config.num_total_plane--;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ dev->mode_config.num_overlay_plane--;
drm_modeset_unlock_all(dev);
}
EXPORT_SYMBOL(drm_plane_cleanup);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 79a5a83..fee37b0 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -874,12 +874,19 @@ static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
}
+extern int drm_universal_plane_init(struct drm_device *dev,
+ struct drm_plane *plane,
+ unsigned long possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats,
+ uint32_t format_count,
+ enum drm_plane_type type);
extern int drm_plane_init(struct drm_device *dev,
struct drm_plane *plane,
unsigned long possible_crtcs,
const struct drm_plane_funcs *funcs,
const uint32_t *formats, uint32_t format_count,
- bool priv);
+ bool is_primary);
extern void drm_plane_cleanup(struct drm_plane *plane);
extern void drm_plane_force_disable(struct drm_plane *plane);
extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
--
1.8.5.1
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