1 files changed, 22 insertions, 1 deletions

diff --git a/sway/config/output.c b/sway/config/output.c
index 6224fc10..9fff79fd 100644
--- a/sway/config/output.c
+++ b/sway/config/output.c
@@ -8,6 +8,7 @@
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_output.h>
+#include <wlr/backend/drm.h>
 #include "sway/config.h"
 #include "sway/input/cursor.h"
 #include "sway/output.h"
@@ -58,6 +59,7 @@ struct output_config *new_output_config(const char *name) {
         oc->width = oc->height = -1;
         oc->refresh_rate = -1;
         oc->custom_mode = -1;
+        oc->drm_mode.type = -1;
         oc->x = oc->y = -1;
         oc->scale = -1;
         oc->scale_filter = SCALE_FILTER_DEFAULT;
@@ -99,6 +101,9 @@ void merge_output_config(struct output_config *dst, struct output_config *src) {
         if (src->custom_mode != -1) {
                 dst->custom_mode = src->custom_mode;
         }
+        if (src->drm_mode.type != (uint32_t) -1) {
+                memcpy(&dst->drm_mode, &src->drm_mode, sizeof(src->drm_mode));
+        }
         if (src->transform != -1) {
                 dst->transform = src->transform;
         }
@@ -271,6 +276,18 @@ static void set_mode(struct wlr_output *output, int width, int height,
         wlr_output_set_mode(output, best);
 }
 
+static void set_modeline(struct wlr_output *output, drmModeModeInfo *drm_mode) {
+        if (!wlr_output_is_drm(output)) {
+                sway_log(SWAY_ERROR, "Modeline can only be set to DRM output");
+                return;
+        }
+        sway_log(SWAY_DEBUG, "Assigning custom modeline to %s", output->name);
+        struct wlr_output_mode *mode = wlr_drm_connector_add_mode(output, drm_mode);
+        if (mode) {
+                wlr_output_set_mode(output, mode);
+        }
+}
+
 /* Some manufacturers hardcode the aspect-ratio of the output in the physical
  * size field. */
 static bool phys_size_is_aspect_ratio(struct wlr_output *output) {
@@ -351,7 +368,11 @@ static void queue_output_config(struct output_config *oc,
         sway_log(SWAY_DEBUG, "Turning on output %s", wlr_output->name);
         wlr_output_enable(wlr_output, true);
 
-        if (oc && oc->width > 0 && oc->height > 0) {
+        if (oc && oc->drm_mode.type != 0 && oc->drm_mode.type != (uint32_t) -1) {
+                sway_log(SWAY_DEBUG, "Set %s modeline",
+                        wlr_output->name);
+                set_modeline(wlr_output, &oc->drm_mode);
+        } else if (oc && oc->width > 0 && oc->height > 0) {
                 sway_log(SWAY_DEBUG, "Set %s mode to %dx%d (%f Hz)",
                         wlr_output->name, oc->width, oc->height, oc->refresh_rate);
                 set_mode(wlr_output, oc->width, oc->height,