From 7c4dd0a266527ffa7ed8d424facaba171618820a Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Wed, 13 Oct 2021 00:42:52 +0200
Subject: drm: of: Add drm_of_lvds_get_data_mapping

Add helper function to convert DT "data-mapping" property string value
into media bus format value, and deduplicate the code in panel-lvds.c
and lvds-codec.c .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
To: dri-devel@lists.freedesktop.org
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211012224252.29185-1-marex@denx.de
---
 drivers/gpu/drm/panel/panel-lvds.c | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

(limited to 'drivers/gpu/drm/panel/panel-lvds.c')

diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 59a8d99e777d..27a1c9923b09 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -20,6 +20,7 @@
 #include <video/videomode.h>
 
 #include <drm/drm_crtc.h>
+#include <drm/drm_of.h>
 #include <drm/drm_panel.h>
 
 struct panel_lvds {
@@ -116,7 +117,6 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds)
 {
 	struct device_node *np = lvds->dev->of_node;
 	struct display_timing timing;
-	const char *mapping;
 	int ret;
 
 	ret = of_drm_get_panel_orientation(np, &lvds->orientation);
@@ -149,24 +149,14 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds)
 
 	of_property_read_string(np, "label", &lvds->label);
 
-	ret = of_property_read_string(np, "data-mapping", &mapping);
+	ret = drm_of_lvds_get_data_mapping(np);
 	if (ret < 0) {
 		dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n",
 			np, "data-mapping");
-		return -ENODEV;
+		return ret;
 	}
 
-	if (!strcmp(mapping, "jeida-18")) {
-		lvds->bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG;
-	} else if (!strcmp(mapping, "jeida-24")) {
-		lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA;
-	} else if (!strcmp(mapping, "vesa-24")) {
-		lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG;
-	} else {
-		dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n",
-			np, "data-mapping");
-		return -EINVAL;
-	}
+	lvds->bus_format = ret;
 
 	lvds->data_mirror = of_property_read_bool(np, "data-mirror");
 
-- 
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