From 7d0290bae7be060e8cf51acd34d9e1f0efbbc339 Mon Sep 17 00:00:00 2001
From: Simon Zeni <simon@bl4ckb0ne.ca>
Date: Fri, 13 Jun 2025 17:05:13 -0400
Subject: [PATCH] sway/config: add allow_drm_leasing config

---
 include/sway/config.h  |  1 +
 include/sway/output.h  |  1 +
 sway/config/output.c   | 12 ++++++++++--
 sway/ipc-json.c        |  2 ++
 sway/sway-output.5.scd |  5 +++++
 5 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/include/sway/config.h b/include/sway/config.h
index 3c380933e..544fdfd5f 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -291,6 +291,7 @@ struct output_config {
 	bool set_color_transform;
 	struct wlr_color_transform *color_transform;
 	int allow_tearing;
+	int allow_drm_leasing;
 	int hdr;
 
 	char *background;
diff --git a/include/sway/output.h b/include/sway/output.h
index 787527ee7..4d82f9eca 100644
--- a/include/sway/output.h
+++ b/include/sway/output.h
@@ -70,6 +70,7 @@ struct sway_output {
 	struct wl_event_source *repaint_timer;
 
 	bool allow_tearing;
+	bool allow_drm_leasing;
 	bool hdr;
 };
 
diff --git a/sway/config/output.c b/sway/config/output.c
index ed8147b8b..5b91124d3 100644
--- a/sway/config/output.c
+++ b/sway/config/output.c
@@ -79,6 +79,7 @@ struct output_config *new_output_config(const char *name) {
 	oc->color_transform = NULL;
 	oc->power = -1;
 	oc->allow_tearing = -1;
+	oc->allow_drm_leasing = -1;
 	oc->hdr = -1;
 	return oc;
 }
@@ -155,6 +156,9 @@ static void supersede_output_config(struct output_config *dst, struct output_con
 	if (src->allow_tearing != -1) {
 		dst->allow_tearing = -1;
 	}
+	if (src->allow_drm_leasing != -1) {
+		dst->allow_drm_leasing = -1;
+	}
 	if (src->hdr != -1) {
 		dst->hdr = -1;
 	}
@@ -233,6 +237,9 @@ static void merge_output_config(struct output_config *dst, struct output_config
 	if (src->allow_tearing != -1) {
 		dst->allow_tearing = src->allow_tearing;
 	}
+	if (src->allow_drm_leasing != -1) {
+		dst->allow_drm_leasing = src->allow_drm_leasing;
+	}
 	if (src->hdr != -1) {
 		dst->hdr = src->hdr;
 	}
@@ -278,11 +285,11 @@ void store_output_config(struct output_config *oc) {
 
 	sway_log(SWAY_DEBUG, "Config stored for output %s (enabled: %d) (%dx%d@%fHz "
 		"position %d,%d scale %f subpixel %s transform %d) (bg %s %s) (power %d) "
-		"(max render time: %d) (allow tearing: %d) (hdr: %d)",
+		"(max render time: %d) (allow tearing: %d) (allow drm leasing: %d) (hdr: %d)",
 		oc->name, oc->enabled, oc->width, oc->height, oc->refresh_rate,
 		oc->x, oc->y, oc->scale, sway_wl_output_subpixel_to_string(oc->subpixel),
 		oc->transform, oc->background, oc->background_option, oc->power,
-		oc->max_render_time, oc->allow_tearing, oc->hdr);
+		oc->max_render_time, oc->allow_tearing, oc->allow_drm_leasing, oc->hdr);
 
 	// If the configuration was not merged into an existing configuration, add
 	// it to the list. Otherwise we're done with it and can free it.
@@ -622,6 +629,7 @@ static bool finalize_output_config(struct output_config *oc, struct sway_output
 
 	output->max_render_time = oc && oc->max_render_time > 0 ? oc->max_render_time : 0;
 	output->allow_tearing = oc && oc->allow_tearing > 0;
+	output->allow_drm_leasing = oc && oc->allow_drm_leasing > 0;
 	output->hdr = applied->image_description != NULL;
 
 	return true;
diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 3b69ad384..ca960a59e 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -409,6 +409,8 @@ static void ipc_json_describe_enabled_output(struct sway_output *output,
 
 	json_object_object_add(object, "max_render_time", json_object_new_int(output->max_render_time));
 	json_object_object_add(object, "allow_tearing", json_object_new_boolean(output->allow_tearing));
+	json_object_object_add(object, "allow_drm_leasing",
+		json_object_new_boolean(output->allow_drm_leasing));
 	json_object_object_add(object, "hdr", json_object_new_boolean(output->hdr));
 }
 
diff --git a/sway/sway-output.5.scd b/sway/sway-output.5.scd
index cc48589c3..000256b0e 100644
--- a/sway/sway-output.5.scd
+++ b/sway/sway-output.5.scd
@@ -210,6 +210,11 @@ must be separated by one space. For example:
 
 	This setting only has effect when a window is fullscreen on the output.
 
+*output* <name> allow_drm_leasing yes|no
+	Allows or disallows leasing a DRM output. The DRM lease interface must be
+	active when calling this command. Outputs offered for leasing will be
+	disabled when leased by a client.
+
 *output* <name> hdr on|off|toggle
 	Enables or disables HDR (High Dynamic Range). HDR enables a larger color
 	gamut and brightness range. HDR uses the BT2020 primaries and the PQ