diff options
| -rw-r--r-- | drivers/gpu/drm/drm_bridge.c | 22 | ||||
| -rw-r--r-- | include/drm/drm_bridge.h | 17 |
2 files changed, 39 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index ef98e21dc593..84fa1a1330cb 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -199,6 +199,28 @@ static DEFINE_MUTEX(bridge_lock); static LIST_HEAD(bridge_list); +void *__devm_drm_bridge_alloc(struct device *dev, size_t size, size_t offset, + const struct drm_bridge_funcs *funcs) +{ + void *container; + struct drm_bridge *bridge; + + if (!funcs) { + dev_warn(dev, "Missing funcs pointer\n"); + return ERR_PTR(-EINVAL); + } + + container = devm_kzalloc(dev, size, GFP_KERNEL); + if (!container) + return ERR_PTR(-ENOMEM); + + bridge = container + offset; + bridge->funcs = funcs; + + return container; +} +EXPORT_SYMBOL(__devm_drm_bridge_alloc); + /** * drm_bridge_add - add the given bridge to the global bridge list * diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index cdad3b78a195..a59277674d5a 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -941,6 +941,23 @@ drm_priv_to_bridge(struct drm_private_obj *priv) return container_of(priv, struct drm_bridge, base); } +void *__devm_drm_bridge_alloc(struct device *dev, size_t size, size_t offset, + const struct drm_bridge_funcs *funcs); + +/** + * devm_drm_bridge_alloc - Allocate and initialize a bridge + * @dev: struct device of the bridge device + * @type: the type of the struct which contains struct &drm_bridge + * @member: the name of the &drm_bridge within @type + * @funcs: callbacks for this bridge + * + * Returns: + * Pointer to new bridge, or ERR_PTR on failure. + */ +#define devm_drm_bridge_alloc(dev, type, member, funcs) \ + ((type *)__devm_drm_bridge_alloc(dev, sizeof(type), \ + offsetof(type, member), funcs)) + void drm_bridge_add(struct drm_bridge *bridge); int devm_drm_bridge_add(struct device *dev, struct drm_bridge *bridge); void drm_bridge_remove(struct drm_bridge *bridge); |