drm/arcpgu: Make ARC PGU usable on simulation platforms
In case of simulation there's no real encoder/transmitter device
because in the model's virtual LCD we're rendering whatever
appears in frame-buffer memory.
Signed-off-by: Ruud Derwig <rderwig@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c
index 7675bbc..07c1bde 100644
--- a/drivers/gpu/drm/arc/arcpgu_drv.c
+++ b/drivers/gpu/drm/arc/arcpgu_drv.c
@@ -149,15 +149,16 @@
/* find the encoder node and initialize it */
encoder_node = of_parse_phandle(drm->dev->of_node, "encoder-slave", 0);
- if (!encoder_node) {
- dev_err(drm->dev, "failed to get an encoder slave node\n");
- return -ENODEV;
+ if (encoder_node) {
+ ret = arcpgu_drm_hdmi_init(drm, encoder_node);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = arcpgu_drm_sim_init(drm, 0);
+ if (ret < 0)
+ return ret;
}
- ret = arcpgu_drm_hdmi_init(drm, encoder_node);
- if (ret < 0)
- return ret;
-
drm_mode_config_reset(drm);
drm_kms_helper_poll_init(drm);