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drm/encoder: register per-encoder debugfs dir

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Each of connectors and CRTCs used by the DRM device provides debugfs
directory, which is used by several standard debugfs files and can
further be extended by the driver. Add such generic debugfs directories
for encoder.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231203115315.1306124-2-dmitry.baryshkov@linaro.org
This commit is contained in:
Dmitry Baryshkov
2023-12-03 14:53:13 +03:00
parent 7d9f1b72b2
commit caf525ed45
4 changed files with 54 additions and 1 deletions
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25
drivers/gpu/drm/drm_debugfs.c
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@@ -589,4 +589,29 @@ void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
crtc->debugfs_entry = NULL;
}
void drm_debugfs_encoder_add(struct drm_encoder *encoder)
{
struct drm_minor *minor = encoder->dev->primary;
struct dentry *root;
char *name;
name = kasprintf(GFP_KERNEL, "encoder-%d", encoder->index);
if (!name)
return;
root = debugfs_create_dir(name, minor->debugfs_root);
kfree(name);
encoder->debugfs_entry = root;
if (encoder->funcs->debugfs_init)
encoder->funcs->debugfs_init(encoder, root);
}
void drm_debugfs_encoder_remove(struct drm_encoder *encoder)
{
debugfs_remove_recursive(encoder->debugfs_entry);
encoder->debugfs_entry = NULL;
}
#endif /* CONFIG_DEBUG_FS */