drm: panel: simple-panel: add support for bus_format retrieval

Provide a way to specify panel requirement in terms of supported media bus
format (particularly useful for panels connected to an RGB or LVDS bus).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Thierry Reding <treding@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index e95385bf8356..450401894663 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -61,6 +61,8 @@ struct panel_desc {
                 unsigned int disable;
                 unsigned int unprepare;
         } delay;
+
+        u32 bus_format;
 };
 
 struct panel_simple {
@@ -111,6 +113,9 @@ static int panel_simple_get_fixed_modes(struct panel_simple *panel)
         connector->display_info.bpc = panel->desc->bpc;
         connector->display_info.width_mm = panel->desc->size.width;
         connector->display_info.height_mm = panel->desc->size.height;
+        if (panel->desc->bus_format)
+                drm_display_info_set_bus_formats(&connector->display_info,
+                                                 &panel->desc->bus_format, 1);
 
         return num;
 }