drm/lcdif: switch to devm_drm_of_get_bridge

The function "drm_of_find_panel_or_bridge" has been deprecated in
favor of "devm_drm_of_get_bridge".

Switch to the new function and reduce boilerplate.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Reported-by: Liu Ying <victor.liu@oss.nxp.com>
Tested-by: Martyn Welch <martyn.welch@collabora.com>
Fixes: 9db35bb349a0e ("drm: lcdif: Add support for i.MX8MP LCDIF variant")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Liu Ying <victor.liu@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Martyn Welch <martyn.welch@collabora.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220819140852.255187-4-marex@denx.de

diff --git a/drivers/gpu/drm/mxsfb/lcdif_drv.c b/drivers/gpu/drm/mxsfb/lcdif_drv.c
index 4f16947212b60a8d7a068c518699ca023297d34e..075002ed6fb09c53ce026304f1b44babc06e610c 100644 (file)
--- a/drivers/gpu/drm/mxsfb/lcdif_drv.c
+++ b/drivers/gpu/drm/mxsfb/lcdif_drv.c
@@ -42,23 +42,11 @@ static int lcdif_attach_bridge(struct lcdif_drm_private *lcdif)
 {
        struct drm_device *drm = lcdif->drm;
        struct drm_bridge *bridge;
-       struct drm_panel *panel;
        int ret;
 
-       ret = drm_of_find_panel_or_bridge(drm->dev->of_node, 0, 0, &panel,
-                                         &bridge);
-       if (ret)
-               return ret;
-
-       if (panel) {
-               bridge = devm_drm_panel_bridge_add_typed(drm->dev, panel,
-                                                        DRM_MODE_CONNECTOR_DPI);
-               if (IS_ERR(bridge))
-                       return PTR_ERR(bridge);
-       }
-
-       if (!bridge)
-               return -ENODEV;
+       bridge = devm_drm_of_get_bridge(drm->dev, drm->dev->of_node, 0, 0);
+       if (IS_ERR(bridge))
+               return PTR_ERR(bridge);
 
        ret = drm_bridge_attach(&lcdif->encoder, bridge, NULL, 0);
        if (ret)