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-rw-r--r--backend/drm/backend.c8
-rw-r--r--backend/drm/drm.c46
2 files changed, 54 insertions, 0 deletions
diff --git a/backend/drm/backend.c b/backend/drm/backend.c
index 0da84745..f202d4d6 100644
--- a/backend/drm/backend.c
+++ b/backend/drm/backend.c
@@ -101,3 +101,11 @@ error_backend:
free(backend);
return NULL;
}
+
+void wlr_drm_backend_dpms(struct wlr_backend *backend, bool screen_on) {
+ struct wlr_backend_state *state = backend->state;
+ for (size_t i = 0; i < state->outputs->length; ++i) {
+ struct wlr_output_state *output = state->outputs->items[i];
+ wlr_drm_output_dpms(state->fd, output, screen_on);
+ }
+}
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 7cbd3e4a..a8e8c9ae 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -249,6 +249,30 @@ static struct wlr_output_impl output_impl = {
.destroy = wlr_drm_output_destroy,
};
+static void scan_property_ids(int fd, drmModeConnector *conn,
+ struct wlr_output_state *output) {
+ for (int i = 0; i < conn->count_props; ++i) {
+ drmModePropertyRes *prop = drmModeGetProperty(fd, conn->props[i]);
+ if (!prop) {
+ continue;
+ }
+
+ // I think this is guranteed to exist
+ if (strcmp(prop->name, "DPMS") == 0) {
+ output->props.dpms = prop->prop_id;
+
+ /* There may be more properties we want to get,
+ * but since it's currently only this, we exit early
+ */
+
+ drmModeFreeProperty(prop);
+ break;
+ }
+
+ drmModeFreeProperty(prop);
+ }
+}
+
void wlr_drm_scan_connectors(struct wlr_backend_state *state) {
wlr_log(L_INFO, "Scanning DRM connectors");
@@ -300,6 +324,8 @@ void wlr_drm_scan_connectors(struct wlr_backend_state *state) {
free(curr_enc);
}
+ scan_property_ids(state->fd, conn, output);
+
list_add(state->outputs, output);
wlr_log(L_INFO, "Found display '%s'", output->name);
} else {
@@ -416,3 +442,23 @@ void wlr_drm_output_cleanup(struct wlr_output_state *output, bool restore) {
}
// TODO: free wlr_output
}
+
+void wlr_drm_output_dpms(int fd, struct wlr_output_state *output, bool screen_on) {
+ if (output->state != DRM_OUTPUT_CONNECTED) {
+ return;
+ }
+
+ if (screen_on) {
+ drmModeConnectorSetProperty(fd, output->connector, output->props.dpms,
+ DRM_MODE_DPMS_ON);
+
+ // Start rendering loop again by drawing a black frame
+ wlr_drm_output_begin(output->wlr_output);
+ glClearColor(0.0, 0.0, 0.0, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+ wlr_drm_output_end(output->wlr_output);
+ } else {
+ drmModeConnectorSetProperty(fd, output->connector, output->props.dpms,
+ DRM_MODE_DPMS_STANDBY);
+ }
+}