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authorBoris Brezillon <boris.brezillon@collabora.com>2019-12-03 17:15:09 +0300
committerBoris Brezillon <boris.brezillon@collabora.com>2019-12-09 12:03:17 +0300
commit4ec5c9050a496a984ffdaaf2307aef353634dc87 (patch)
tree0608fd53cc0abdaaa8c943bdfda67182f66e2ab6 /include/drm/drm_bridge.h
parent05193dc38197021894b17239fafbd2eb1afe5a45 (diff)
downloadlinux-4ec5c9050a496a984ffdaaf2307aef353634dc87.tar.xz
drm/bridge: Add the drm_for_each_bridge_in_chain() helper
To iterate over all bridges attached to a specific encoder. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191203141515.3597631-6-boris.brezillon@collabora.com
Diffstat (limited to 'include/drm/drm_bridge.h')
-rw-r--r--include/drm/drm_bridge.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index c118726469ee..1eb854025a20 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -441,6 +441,17 @@ drm_bridge_chain_get_first_bridge(struct drm_encoder *encoder)
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
+ * iteration
+ *
+ * Iterate over all bridges present in the bridge chain attached to @encoder.
+ */
+#define drm_for_each_bridge_in_chain(encoder, bridge) \
+ list_for_each_entry(bridge, &(encoder)->bridge_chain, chain_node)
+
bool drm_bridge_chain_mode_fixup(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);