diff options
| author | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2025-08-01 19:05:24 +0200 |
|---|---|---|
| committer | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2025-09-02 11:38:29 +0200 |
| commit | d77ad5178e90f5aa4ce6085510b3b2f742abc5f0 (patch) | |
| tree | 111453e21b86487aa09e3de2673db585d4045f89 | |
| parent | cb86408b1fc2e3f6fe45ebe8509a5404060e01e0 (diff) | |
drm/bridge: add drm_bridge_chain_get_last_bridge()
Add an equivalent of drm_bridge_chain_get_first_bridge() to get the last
bridge.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250801-drm-bridge-alloc-getput-drm_bridge_get_next_bridge-v2-2-888912b0be13@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
| -rw-r--r-- | include/drm/drm_bridge.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 8d9d4fd078e7..788517ab00d3 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -1411,6 +1411,24 @@ drm_bridge_chain_get_first_bridge(struct drm_encoder *encoder) } /** + * drm_bridge_chain_get_last_bridge() - Get the last bridge in the chain + * @encoder: encoder object + * + * The refcount of the returned bridge is incremented. Use drm_bridge_put() + * when done with it. + * + * RETURNS: + * the last bridge in the chain, or NULL if @encoder has no bridge attached + * to it. + */ +static inline struct drm_bridge * +drm_bridge_chain_get_last_bridge(struct drm_encoder *encoder) +{ + return drm_bridge_get(list_last_entry_or_null(&encoder->bridge_chain, + struct drm_bridge, chain_node)); +} + +/** * drm_for_each_bridge_in_chain() - Iterate over all bridges present in a chain * @encoder: the encoder to iterate bridges on * @bridge: a bridge pointer updated to point to the current bridge at each |