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drm/debugfs: add a "force" file per connector

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Add a file to debugfs for each connector to enable modification of the
"force" connector attribute. This allows connectors to be enabled or
disabled for testing and debugging purposes.

v2: Add stricter value checking and clean up debugfs_entry if file
    creation fails in drm_debugfs_connector_add. (David Herrmann)

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Thomas Wood
2014-06-18 17:52:32 +01:00
committed by Daniel Vetter
parent 34ea3d3863
commit 30f6570798
4 changed files with 143 additions and 1 deletions
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17
drivers/gpu/drm/drm_crtc.c
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@@ -881,6 +881,8 @@ int drm_connector_init(struct drm_device *dev,
drm_object_attach_property(&connector->base,
dev->mode_config.dpms_property, 0);
connector->debugfs_entry = NULL;
out_put:
if (ret)
drm_mode_object_put(dev, &connector->base);
@@ -931,7 +933,19 @@ EXPORT_SYMBOL(drm_connector_cleanup);
*/
int drm_connector_register(struct drm_connector *connector)
{
return drm_sysfs_connector_add(connector);
int ret;
ret = drm_sysfs_connector_add(connector);
if (ret)
return ret;
ret = drm_debugfs_connector_add(connector);
if (ret) {
drm_sysfs_connector_remove(connector);
return ret;
}
return 0;
}
EXPORT_SYMBOL(drm_connector_register);
@@ -944,6 +958,7 @@ EXPORT_SYMBOL(drm_connector_register);
void drm_connector_unregister(struct drm_connector *connector)
{
drm_sysfs_connector_remove(connector);
drm_debugfs_connector_remove(connector);
}
EXPORT_SYMBOL(drm_connector_unregister);