To allows the userspace to test many hardware configuration, introduce a
new interface to change a connector type.
The type of a connector can be changed by editing the file type and by
writing the connector type number.
The current interface is:
/config/vkms
DEVICE_1
┣━ enable
┣━ planes
┃ ┗━ [...]
┣━ connectors
┃ ┗━ CONNECTOR_1
┃ ┣━ possible_encoders
┃ ┗━ type
┗━ encoders
┗━ [...]
Signed-off-by: Louis Chauvet <louis.chau...@bootlin.com>
---
drivers/gpu/drm/vkms/vkms_configfs.c | 71 ++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c
b/drivers/gpu/drm/vkms/vkms_configfs.c
index
8bb3223c810dddb7d713ad4b01cece825f9939f6..5f416260f209fc98939f8addd175e5c3b8e35353
100644
--- a/drivers/gpu/drm/vkms/vkms_configfs.c
+++ b/drivers/gpu/drm/vkms/vkms_configfs.c
@@ -633,12 +633,83 @@ static void connector_release(struct config_item *item)
kfree(vkms_configfs_connector);
}
+static ssize_t connector_type_show(struct config_item *item, char *page)
+{
+ struct vkms_config_connector *connector;
+ int connector_type;
+ 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;
+ connector_type = connector->type;
+ mutex_unlock(&vkms_configfs->lock);
+
+ return sprintf(page, "%u", connector_type);
+}
+
+static ssize_t connector_type_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct vkms_config_connector *connector;
+ int val = DRM_MODE_CONNECTOR_VIRTUAL;
+ struct vkms_configfs_device *vkms_configfs =
connector_child_item_to_vkms_configfs_device(item);
+ int ret;
+
+ ret = kstrtouint(page, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case DRM_MODE_CONNECTOR_Unknown:
+ case DRM_MODE_CONNECTOR_VGA:
+ case DRM_MODE_CONNECTOR_DVII:
+ case DRM_MODE_CONNECTOR_DVID:
+ case DRM_MODE_CONNECTOR_DVIA:
+ case DRM_MODE_CONNECTOR_Composite:
+ case DRM_MODE_CONNECTOR_SVIDEO:
+ case DRM_MODE_CONNECTOR_LVDS:
+ case DRM_MODE_CONNECTOR_Component:
+ case DRM_MODE_CONNECTOR_9PinDIN:
+ case DRM_MODE_CONNECTOR_DisplayPort:
+ case DRM_MODE_CONNECTOR_HDMIA:
+ case DRM_MODE_CONNECTOR_HDMIB:
+ case DRM_MODE_CONNECTOR_TV:
+ case DRM_MODE_CONNECTOR_eDP:
+ case DRM_MODE_CONNECTOR_VIRTUAL:
+ case DRM_MODE_CONNECTOR_DSI:
+ case DRM_MODE_CONNECTOR_DPI:
+ case DRM_MODE_CONNECTOR_SPI:
+ case DRM_MODE_CONNECTOR_USB:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ scoped_guard(mutex, &vkms_configfs->lock) {
+ if (vkms_configfs->enabled)
+ return -EINVAL;
+
+ connector =
connector_item_to_vkms_configfs_connector(item)->vkms_config_connector;
+ connector->type = val;
+ }
+
+ return count;
+}
+
+CONFIGFS_ATTR(connector_, type);
+
+static struct configfs_attribute *connector_attrs[] = {
+ &connector_attr_type,
+ NULL,
+};
+
static struct configfs_item_operations connector_item_operations = {
.release = connector_release,
};
static const struct config_item_type connector_item_type = {
.ct_item_ops = &connector_item_operations,
+ .ct_attrs = connector_attrs,
.ct_owner = THIS_MODULE,
};
--
2.47.1
