diff --git a/drivers/gpu/drm/panel/panel-himax-hx83121a.c b/drivers/gpu/drm/panel/panel-himax-hx83121a.c
index bed79aa06f46..1a7e0125bced 100644
--- a/drivers/gpu/drm/panel/panel-himax-hx83121a.c
+++ b/drivers/gpu/drm/panel/panel-himax-hx83121a.c
@@ -193,10 +193,11 @@ static const struct drm_panel_funcs himax_panel_funcs = {
 
 static int himax_bl_update_status(struct backlight_device *bl)
 {
-	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	struct himax *ctx = bl_get_data(bl);
 	u16 brightness = backlight_get_brightness(bl);
 	/* TODO: brightness to raw map table */
-	return mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
+	return mipi_dsi_dcs_set_display_brightness_large(to_primary_dsi(ctx),
+							 brightness);
 }
 
 static const struct backlight_ops himax_bl_ops = {
@@ -205,9 +206,9 @@ static const struct backlight_ops himax_bl_ops = {
 };
 
 static struct backlight_device *
-himax_create_backlight(struct mipi_dsi_device *dsi)
+himax_create_backlight(struct himax *ctx)
 {
-	struct device *dev = &dsi->dev;
+	struct device *dev = &to_primary_dsi(ctx)->dev;
 	const struct backlight_properties props = {
 		.type = BACKLIGHT_RAW,
 		.brightness = 512,
@@ -215,7 +216,7 @@ himax_create_backlight(struct mipi_dsi_device *dsi)
 		.scale = BACKLIGHT_SCALE_NON_LINEAR,
 	};
 
-	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+	return devm_backlight_device_register(dev, dev_name(dev), dev, ctx,
 					      &himax_bl_ops, &props);
 }
 
@@ -646,7 +647,7 @@ static int himax_probe(struct mipi_dsi_device *dsi)
 	ctx->panel.prepare_prev_first = true;
 
 	if (desc->has_dcs_backlight) {
-		ctx->backlight = himax_create_backlight(to_primary_dsi(ctx));
+		ctx->backlight = himax_create_backlight(ctx);
 		if (IS_ERR(ctx->backlight))
 			return dev_err_probe(dev, PTR_ERR(ctx->backlight),
 					     "Failed to create backlight\n");