[PATCH RFC v2 13/16] drm/vkms: Introduce configfs for connector status

[Louis Chauvet]

Signed-off-by: Louis Chauvet <louis.chau...@bootlin.com>
---
 drivers/gpu/drm/vkms/vkms_configfs.c | 45 ++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c 
b/drivers/gpu/drm/vkms/vkms_configfs.c
index 
dede56a8a2c1e866734f9c979c76977370907680..6412a8b7b1066f2d3dca1135ebd7fbaed84027b6
 100644
--- a/drivers/gpu/drm/vkms/vkms_configfs.c
+++ b/drivers/gpu/drm/vkms/vkms_configfs.c
@@ -981,10 +981,55 @@ static ssize_t connector_type_store(struct config_item 
*item,
        return count;
 }
 
+static ssize_t connector_status_show(struct config_item *item, char *page)
+{
+       struct vkms_config_connector *connector;
+       enum drm_connector_status status;
+       struct vkms_configfs_device *vkms_configfs = 
connector_child_item_to_vkms_configfs_device(item);
+
+       mutex_lock(&vkms_configfs->lock);
+       connector = 
connector_item_to_vkms_configfs_connector(item)->vkms_config_connector;
+       status = connector->status;
+       mutex_unlock(&vkms_configfs->lock);
+
+       return sprintf(page, "%u", status);
+}
+
+static ssize_t connector_status_store(struct config_item *item,
+                                     const char *page, size_t count)
+{
+       struct vkms_config_connector *connector;
+       enum drm_connector_status status = connector_status_unknown;
+       struct vkms_configfs_device *vkms_configfs = 
connector_child_item_to_vkms_configfs_device(item);
+       int ret;
+
+       ret = kstrtouint(page, 10, &status);
+       if (ret)
+               return ret;
+
+       switch (status) {
+       case connector_status_unknown:
+       case connector_status_connected:
+       case connector_status_disconnected:
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       scoped_guard(mutex, &vkms_configfs->lock) {
+               connector = 
connector_item_to_vkms_configfs_connector(item)->vkms_config_connector;
+               vkms_config_connector_update_status(connector, status);
+       }
+
+       return count;
+}
+
 CONFIGFS_ATTR(connector_, type);
+CONFIGFS_ATTR(connector_, status);
 
 static struct configfs_attribute *connector_attrs[] = {
        &connector_attr_type,
+       &connector_attr_status,
        NULL,
 };
 

-- 
2.47.0