Configure outputs with make, model, serial in rootston

Added fallbacks in DRM backend in case EDID extension data for model and serial is missing.

Updates #403

backend/drm/util.c

@@ -93,6 +93,12 @@ void parse_edid(struct wlr_output *restrict output, size_t len, const uint8_t *d
 	uint16_t id = (data[8] << 8) | data[9];
 	snprintf(output->make, sizeof(output->make), "%s", get_manufacturer(id));
 
+	uint16_t model = data[10] | (data[11] << 8);
+	snprintf(output->model, sizeof(output->model), "0x%04X", model);
+
+	uint32_t serial = data[12] | (data[13] << 8) | (data[14] << 8) | (data[15] << 8);
+	snprintf(output->serial, sizeof(output->serial), "0x%08X", serial);
+
 	output->phys_width = ((data[68] & 0xf0) << 4) | data[66];
 	output->phys_height = ((data[68] & 0x0f) << 8) | data[67];
 

rootston/config.c

@@ -466,10 +466,15 @@ void roots_config_destroy(struct roots_config *config) {
 
 struct roots_output_config *roots_config_get_output(struct roots_config *config,
 		struct wlr_output *output) {
-	struct roots_output_config *o_config;
-	wl_list_for_each(o_config, &config->outputs, link) {
-		if (strcmp(o_config->name, output->name) == 0) {
-			return o_config;
+	char name[83];
+	snprintf(name, sizeof(name), "%s %s %s", output->make, output->model,
+		output->serial);
+
+	struct roots_output_config *oc;
+	wl_list_for_each(oc, &config->outputs, link) {
+		if (strcmp(oc->name, output->name) == 0 ||
+				strcmp(oc->name, name) == 0) {
+			return oc;
 		}
 	}
 

rootston/output.c

@@ -291,7 +291,7 @@ void output_add_notify(struct wl_listener *listener, void *data) {
 	struct roots_config *config = desktop->config;
 
 	wlr_log(L_DEBUG, "Output '%s' added", wlr_output->name);
-	wlr_log(L_DEBUG, "%s %s %s %"PRId32"mm x %"PRId32"mm", wlr_output->make,
+	wlr_log(L_DEBUG, "'%s %s %s' %"PRId32"mm x %"PRId32"mm", wlr_output->make,
 		wlr_output->model, wlr_output->serial, wlr_output->phys_width,
 		wlr_output->phys_height);
 	if (wl_list_length(&wlr_output->modes) > 0) {