diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-12-03 14:43:28 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-12-04 16:07:29 +0200 |
| commit | 2a04739139b2b2761571e18937e2400e71eff664 (patch) | |
| tree | bc162276f72f8453be8519881195f8e947c47a98 /include/drm | |
| parent | aa041111311d35cb311543f43bc60b825b8cd109 (diff) | |
drm/bridge: add transparent bridge helper
Define a helper for creating simple transparent bridges which serve the
only purpose of linking devices into the bridge chain up to the last
bridge representing the connector. This is especially useful for
DP/USB-C bridge chains, which can span across several devices, but do
not require any additional functionality from the intermediate bridges.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231203114333.1305826-2-dmitry.baryshkov@linaro.org
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/bridge/aux-bridge.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/drm/bridge/aux-bridge.h b/include/drm/bridge/aux-bridge.h new file mode 100644 index 000000000000..b3a9cc9c862f --- /dev/null +++ b/include/drm/bridge/aux-bridge.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2023 Linaro Ltd. + * + * Author: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> + */ +#ifndef DRM_AUX_BRIDGE_H +#define DRM_AUX_BRIDGE_H + +#if IS_ENABLED(CONFIG_DRM_AUX_BRIDGE) +int drm_aux_bridge_register(struct device *parent); +#else +static inline int drm_aux_bridge_register(struct device *parent) +{ + return 0; +} +#endif + +#endif |