From 2509969a9862b522d2208e8663057fb227556687 Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Fri, 4 Feb 2022 16:13:41 -0800 Subject: drm: Plumb debugfs_init through to panels We'd like panels to be able to add things to debugfs underneath the connector's directory. Let's plumb it through. A panel will be able to put things in a "panel" directory under the connector's directory. Note that debugfs is not ABI and so it's always possible that the location that the panel gets for its debugfs could change in the future. NOTE: this currently only works if you're using a modern architecture. Specifically the plumbing relies on _both_ drm_bridge_connector and drm_panel_bridge. If you're not using one or both of these things then things won't be plumbed through. As a side effect of this change, drm_bridges can also get callbacks to put stuff underneath the connector's debugfs directory. At the moment all bridges in the chain have their debugfs_init() called with the connector's root directory. Signed-off-by: Douglas Anderson Reviewed-by: Javier Martinez Canillas Reviewed-by: Laurent Pinchart Link: https://patchwork.freedesktop.org/patch/msgid/20220204161245.v2.2.Ib0bd5346135cbb0b63006b69b61d4c8af6484740@changeid --- include/drm/drm_bridge.h | 7 +++++++ include/drm/drm_connector.h | 7 +++++++ include/drm/drm_panel.h | 8 ++++++++ 3 files changed, 22 insertions(+) (limited to 'include') diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 061d87313fac..f27b4060faa2 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -649,6 +649,13 @@ struct drm_bridge_funcs { * the DRM_BRIDGE_OP_HPD flag in their &drm_bridge->ops. */ void (*hpd_disable)(struct drm_bridge *bridge); + + /** + * @debugfs_init: + * + * Allows bridges to create bridge-specific debugfs files. + */ + void (*debugfs_init)(struct drm_bridge *bridge, struct dentry *root); }; /** diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 5e36eb3df66f..5166186146f4 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1142,6 +1142,13 @@ struct drm_connector_funcs { * has been received from a source outside the display driver / device. */ void (*oob_hotplug_event)(struct drm_connector *connector); + + /** + * @debugfs_init: + * + * Allows connectors to create connector-specific debugfs files. + */ + void (*debugfs_init)(struct drm_connector *connector, struct dentry *root); }; /** diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index 4602f833eb51..1ba2d424a53f 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -29,6 +29,7 @@ #include struct backlight_device; +struct dentry; struct device_node; struct drm_connector; struct drm_device; @@ -125,6 +126,13 @@ struct drm_panel_funcs { */ int (*get_timings)(struct drm_panel *panel, unsigned int num_timings, struct display_timing *timings); + + /** + * @debugfs_init: + * + * Allows panels to create panels-specific debugfs files. + */ + void (*debugfs_init)(struct drm_panel *panel, struct dentry *root); }; /** -- cgit v1.2.3