drm/vkms: Allow to configure connector status

Allow to store the connector status in vkms_config_connector and add a
getter and a setter functions as well a KUnit test.

This change only adds the configuration, the connector status is not
used yet.

Tested-by: Mark Yacoub <markyacoub@google.com>
Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Link: https://lore.kernel.org/r/20251016175618.10051-15-jose.exposito89@gmail.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

Author: JoseExposito

drivers/gpu/drm/vkms/tests/vkms_config_test.c

@@ -957,6 +957,29 @@ static void vkms_config_test_connector_get_possible_encoders(struct kunit *test)
 	vkms_config_destroy(config);
 }
 
+static void vkms_config_test_connector_status(struct kunit *test)
+{
+	struct vkms_config *config;
+	struct vkms_config_connector *connector_cfg;
+	enum drm_connector_status status;
+
+	config = vkms_config_create("test");
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config);
+
+	connector_cfg = vkms_config_create_connector(config);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, connector_cfg);
+
+	status = vkms_config_connector_get_status(connector_cfg);
+	KUNIT_EXPECT_EQ(test, status, connector_status_connected);
+
+	vkms_config_connector_set_status(connector_cfg,
+					 connector_status_disconnected);
+	status = vkms_config_connector_get_status(connector_cfg);
+	KUNIT_EXPECT_EQ(test, status, connector_status_disconnected);
+
+	vkms_config_destroy(config);
+}
+
 static struct kunit_case vkms_config_test_cases[] = {
 	KUNIT_CASE(vkms_config_test_empty_config),
 	KUNIT_CASE_PARAM(vkms_config_test_default_config,
@@ -978,6 +1001,7 @@ static struct kunit_case vkms_config_test_cases[] = {
 	KUNIT_CASE(vkms_config_test_plane_get_possible_crtcs),
 	KUNIT_CASE(vkms_config_test_encoder_get_possible_crtcs),
 	KUNIT_CASE(vkms_config_test_connector_get_possible_encoders),
+	KUNIT_CASE(vkms_config_test_connector_status),
 	{}
 };
 

drivers/gpu/drm/vkms/vkms_config.c

@@ -361,8 +361,11 @@ static int vkms_config_show(struct seq_file *m, void *data)
 	vkms_config_for_each_encoder(vkmsdev->config, encoder_cfg)
 		seq_puts(m, "encoder\n");
 
-	vkms_config_for_each_connector(vkmsdev->config, connector_cfg)
-		seq_puts(m, "connector\n");
+	vkms_config_for_each_connector(vkmsdev->config, connector_cfg) {
+		seq_puts(m, "connector:\n");
+		seq_printf(m, "\tstatus=%d\n",
+			   vkms_config_connector_get_status(connector_cfg));
+	}
 
 	return 0;
 }
@@ -588,6 +591,7 @@ struct vkms_config_connector *vkms_config_create_connector(struct vkms_config *c
 		return ERR_PTR(-ENOMEM);
 
 	connector_cfg->config = config;
+	connector_cfg->status = connector_status_connected;
 	xa_init_flags(&connector_cfg->possible_encoders, XA_FLAGS_ALLOC);
 
 	list_add_tail(&connector_cfg->link, &config->connectors);

drivers/gpu/drm/vkms/vkms_config.h

@@ -7,6 +7,8 @@
 #include <linux/types.h>
 #include <linux/xarray.h>
 
+#include <drm/drm_connector.h>
+
 #include "vkms_drv.h"
 
 /**
@@ -99,6 +101,7 @@ struct vkms_config_encoder {
  *
  * @link: Link to the others connector in vkms_config
  * @config: The vkms_config this connector belongs to
+ * @status: Status (connected, disconnected...) of the connector
  * @possible_encoders: Array of encoders that can be used with this connector
  * @connector: Internal usage. This pointer should never be considered as valid.
  *             It can be used to store a temporary reference to a VKMS connector
@@ -109,6 +112,7 @@ struct vkms_config_connector {
 	struct list_head link;
 	struct vkms_config *config;
 
+	enum drm_connector_status status;
 	struct xarray possible_encoders;
 
 	/* Internal usage */
@@ -434,4 +438,26 @@ int __must_check vkms_config_connector_attach_encoder(struct vkms_config_connect
 void vkms_config_connector_detach_encoder(struct vkms_config_connector *connector_cfg,
 					  struct vkms_config_encoder *encoder_cfg);
 
+/**
+ * vkms_config_connector_get_status() - Return the status of the connector
+ * @connector_cfg: Connector to get the status from
+ */
+static inline enum drm_connector_status
+vkms_config_connector_get_status(struct vkms_config_connector *connector_cfg)
+{
+	return connector_cfg->status;
+}
+
+/**
+ * vkms_config_connector_set_status() - Set the status of the connector
+ * @connector_cfg: Connector to set the status to
+ * @status: New connector status
+ */
+static inline void
+vkms_config_connector_set_status(struct vkms_config_connector *connector_cfg,
+				 enum drm_connector_status status)
+{
+	connector_cfg->status = status;
+}
+
 #endif /* _VKMS_CONFIG_H_ */