drm: add bus_formats and num_bus_formats fields to drm_display_info

Add bus_formats and num_bus_formats fields and
drm_display_info_set_bus_formats helper function to specify the bus
formats supported by a given display.

This information can be used by display controller drivers to configure
the output interface appropriately (i.e. RGB565, RGB666 or RGB888 on raw
RGB or LVDS busses).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Thierry Reding <treding@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index f444263055c5..0ecfb7c80601 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -31,6 +31,7 @@
 #include <linux/idr.h>
 #include <linux/fb.h>
 #include <linux/hdmi.h>
+#include <linux/media-bus-format.h>
 #include <uapi/drm/drm_mode.h>
 #include <uapi/drm/drm_fourcc.h>
 #include <drm/drm_modeset_lock.h>
@@ -139,6 +140,9 @@ struct drm_display_info {
         enum subpixel_order subpixel_order;
         u32 color_formats;
 
+        const u32 *bus_formats;
+        unsigned int num_bus_formats;
+
         /* Mask of supported hdmi deep color modes */
         u8 edid_hdmi_dc_modes;
 
@@ -1282,6 +1286,10 @@ int drm_mode_connector_set_tile_property(struct drm_connector *connector);
 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
                                                    const struct edid *edid);
 
+extern int drm_display_info_set_bus_formats(struct drm_display_info *info,
+                                            const u32 *formats,
+                                            unsigned int num_formats);
+
 static inline bool drm_property_type_is(struct drm_property *property,
                 uint32_t type)
 {