* @primary: Primary plane for CRTC
* @cursor: Cursor plane for CRTC
* @funcs: callbacks for the new CRTC
+ * @name: printf style format string for the CRTC name, or NULL for default name
*
* Inits a new object created as base part of a driver crtc object.
*
int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_plane *primary,
struct drm_plane *cursor,
- const struct drm_crtc_funcs *funcs)
+ const struct drm_crtc_funcs *funcs,
+ const char *name, ...)
{
struct drm_mode_config *config = &dev->mode_config;
int ret;
* @encoder: the encoder to init
* @funcs: callbacks for this encoder
* @encoder_type: user visible type of the encoder
+ * @name: printf style format string for the encoder name, or NULL for default name
*
* Initialises a preallocated encoder. Encoder should be
* subclassed as part of driver encoder objects.
int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
- int encoder_type)
+ int encoder_type, const char *name, ...)
{
int ret;
* @formats: array of supported formats (%DRM_FORMAT_*)
* @format_count: number of elements in @formats
* @type: type of plane (overlay, primary, cursor)
+ * @name: printf style format string for the plane name, or NULL for default name
*
* Initializes a plane object of type @type.
*
unsigned long possible_crtcs,
const struct drm_plane_funcs *funcs,
const uint32_t *formats, unsigned int format_count,
- enum drm_plane_type type)
+ enum drm_plane_type type,
+ const char *name, ...)
{
struct drm_mode_config *config = &dev->mode_config;
int ret;
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);
+ formats, format_count, type, NULL);
}
EXPORT_SYMBOL(drm_plane_init);
+/**
+ * drm_share_plane_init - Initialize a share plane
+ * @dev: DRM device
+ * @plane: plane object to init
+ * @parent: this plane share some resources with parent plane.
+ * @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
+ * @type: type of plane (overlay, primary, cursor)
+ *
+ * With this API, the plane can share hardware resources with other planes.
+ *
+ * --------------------------------------------------
+ * | scanout |
+ * | ------------------ |
+ * | | parent plane | |
+ * | | active scanout | |
+ * | | | ----------------- |
+ * | ------------------ | share plane 1 | |
+ * | ----------------- |active scanout | |
+ * | | share plane 0 | | | |
+ * | |active scanout | ----------------- |
+ * | | | |
+ * | ----------------- |
+ * --------------------------------------------------
+ *
+ * parent plane
+ * |---share plane 0
+ * |---share plane 1
+ * ...
+ *
+ * The plane hardware is used when the display scanout run into plane active
+ * scanout, that means we can reuse the plane hardware resources on plane
+ * non-active scanout.
+ *
+ * Because resource share, There are some limit on share plane: one group
+ * of share planes need use same zpos, can't not overlap, etc.
+ *
+ * Here assume share plane is a universal plane with some limit flags.
+ * people who use the share plane need know the limit, should call the ioctl
+ * DRM_CLIENT_CAP_SHARE_PLANES, and judge the planes limit before use it.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+
+int drm_share_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ struct drm_plane *parent,
+ unsigned long possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, unsigned int format_count,
+ enum drm_plane_type type)
+{
+ struct drm_mode_config *config = &dev->mode_config;
+ int ret;
+ int share_id;
+
+ /*
+ * TODO: only verified on ATOMIC drm driver.
+ */
+ if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
+ return -EINVAL;
+
+ ret = drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
+ formats, format_count, type, NULL);
+ if (ret)
+ return ret;
+
+ if (parent) {
+ /*
+ * Can't support more than two level plane share.
+ */
+ WARN_ON(parent->parent);
+ share_id = parent->base.id;
+ plane->parent = parent;
+
+ config->num_share_plane++;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ config->num_share_overlay_plane++;
+ } else {
+ share_id = plane->base.id;
+ }
+
+ drm_object_attach_property(&plane->base,
+ config->prop_share_id, share_id);
+ return 0;
+}
+EXPORT_SYMBOL(drm_share_plane_init);
+
/**
* drm_plane_cleanup - Clean up the core plane usage
* @plane: plane to cleanup
dev->mode_config.num_total_plane--;
if (plane->type == DRM_PLANE_TYPE_OVERLAY)
dev->mode_config.num_overlay_plane--;
+ if (plane->parent) {
+ dev->mode_config.num_share_plane--;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ dev->mode_config.num_share_overlay_plane--;
+ }
drm_modeset_unlock_all(dev);
WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
return -ENOMEM;
dev->mode_config.plane_type_property = prop;
+ prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE,
+ "SHARE_ID", 0, UINT_MAX);
+ if (!prop)
+ return -ENOMEM;
+
+ dev->mode_config.prop_share_id = prop;
+ prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE,
+ "SHARE_FLAGS", 0, UINT_MAX);
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.prop_share_flags = prop;
+
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"SRC_X", 0, UINT_MAX);
if (!prop)
num_planes = config->num_total_plane;
else
num_planes = config->num_overlay_plane;
+ if (!file_priv->share_planes) {
+ if (file_priv->universal_planes)
+ num_planes -= config->num_share_plane;
+ else
+ num_planes -= config->num_share_overlay_plane;
+ }
/*
* This ioctl is called twice, once to determine how much space is
if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
!file_priv->universal_planes)
continue;
+ if (plane->parent && !file_priv->share_planes)
+ continue;
if (put_user(plane->base.id, plane_ptr + copied))
return -EFAULT;
{
int i;
+ /*
+ * In the past, drivers have attempted to model the static association
+ * of connector to encoder in simple connector/encoder devices using a
+ * direct assignment of connector->encoder = encoder. This connection
+ * is a logical one and the responsibility of the core, so drivers are
+ * expected not to mess with this.
+ *
+ * Note that the error return should've been enough here, but a large
+ * majority of drivers ignores the return value, so add in a big WARN
+ * to get people's attention.
+ */
+ if (WARN_ON(connector->encoder))
+ return -EINVAL;
+
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] == 0) {
connector->encoder_ids[i] = encoder->base.id;
projects / firefly-linux-kernel-4.4.55.git / blobdiff