panel-nx: add drm orientation

drivers/gpu/drm/panel/panel-nx-dsi.c

@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2018 SwtcR <swtcr0@gmail.com>
- * Copyright (C) 2023-2024 Azkali <a.ffcc7@gmail.com>
+ * Copyright (C) 2023-2026 Azkali <a.ffcc7@gmail.com>
+ * Copyright (C) 2026 Thomas Makin <halorocker89@gmail.com>
  *
  * Based on Sharp ls043t1le01 panel driver by Werner Johansson <werner.johansson@sonymobile.com>
  *
@@ -27,6 +28,7 @@
 #include <video/mipi_display.h>
 
 #include <drm/drm_mipi_dsi.h>
+#include <drm/drm_of.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_modes.h>
@@ -110,6 +112,7 @@ struct nx_panel {
 	bool enabled;
 
 	const struct drm_display_mode *mode;
+	enum drm_panel_orientation orientation;
 
 	struct init_cmd *init_cmds;
 	struct init_cmd *suspend_cmds;
@@ -631,21 +634,32 @@ static int nx_panel_get_modes(struct drm_panel *panel,
 	connector->display_info.height_mm = 137;
 	connector->display_info.bpc = 8;
 
+	drm_connector_set_panel_orientation(connector, nx->orientation);
+
 	return 1;
 }
 
+static enum drm_panel_orientation nx_panel_get_orientation(struct drm_panel *panel)
+{
+	struct nx_panel *nx = to_nx_panel(panel);
+
+	return nx->orientation;
+}
+
 static const struct drm_panel_funcs nx_panel_funcs = {
 	.prepare = nx_panel_prepare,
 	.unprepare = nx_panel_unprepare,
 	.enable = nx_panel_enable,
 	.disable = nx_panel_disable,
 	.get_modes = nx_panel_get_modes,
+	.get_orientation = nx_panel_get_orientation,
 };
 
 static int nx_panel_add(struct nx_panel *nx)
 {
 	struct device *dev = &nx->dsi->dev;
 	struct device_node *np;
+	int ret;
 
 	nx->mode = &default_mode;
 
@@ -677,6 +691,12 @@ static int nx_panel_add(struct nx_panel *nx)
 			return -EPROBE_DEFER;
 	}
 
+	ret = of_drm_get_panel_orientation(dev->of_node, &nx->orientation);
+	if (ret < 0) {
+		dev_err(dev, "Failed to get orientation %d\n", ret);
+		return ret;
+	}
+
 	drm_panel_init(&nx->base, &nx->dsi->dev, &nx_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);