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| author | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2025-08-08 16:49:15 +0200 |
|---|---|---|
| committer | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2025-09-16 15:02:50 +0200 |
| commit | 78f4eec62097754fed1b910544ff60ef10a76554 (patch) | |
| tree | 0a32eff6bb5bc366d4a60c6d45b724bd0bda7d97 | |
| parent | 2f08387a444c4fb2e983305356f030d50978d21d (diff) | |
drm/bridge: add drm_for_each_bridge_in_chain_from()
Add variant of drm_for_each_bridge_in_chain_scoped() that iterates on the
encoder bridge from a given bridge until the end of the chain.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250808-drm-bridge-alloc-getput-for_each_bridge-v2-8-edb6ee81edf1@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
| -rw-r--r-- | include/drm/drm_bridge.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index c45dece368ad..d1aba4e25d35 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -1471,6 +1471,25 @@ drm_bridge_get_next_bridge_and_put(struct drm_bridge *bridge) bridge; \ bridge = drm_bridge_get_next_bridge_and_put(bridge)) +/** + * drm_for_each_bridge_in_chain_from - iterate over all bridges starting + * from the given bridge + * @first_bridge: the bridge to start from + * @bridge: a bridge pointer updated to point to the current bridge at each + * iteration + * + * Iterate over all bridges in the encoder chain starting from + * @first_bridge, included. + * + * Automatically gets/puts the bridge reference while iterating, and puts + * the reference even if returning or breaking in the middle of the loop. + */ +#define drm_for_each_bridge_in_chain_from(first_bridge, bridge) \ + for (struct drm_bridge *bridge __free(drm_bridge_put) = \ + drm_bridge_get(first_bridge); \ + bridge; \ + bridge = drm_bridge_get_next_bridge_and_put(bridge)) + enum drm_mode_status drm_bridge_chain_mode_valid(struct drm_bridge *bridge, const struct drm_display_info *info, |