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backend/drm: fill scratch wlr_output_state for set_mode

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Populate the wlr_output_state when setting a mode. This will allow
drm_connector_set_mode to stop relying on ephemeral fields in
wlr_drm_crtc. Also drm_connector_set_mode will be able to apply
both a new buffer and a new mode atomically.
This commit is contained in:
Simon Ser 2021-04-06 16:57:42 +02:00 committed by Kenny Levinsen
parent 1a9701cd7c
commit c9c2d7539c
2 changed files with 23 additions and 7 deletions
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13
backend/drm/backend.c
View file

@ -118,12 +118,17 @@ static void handle_session_active(struct wl_listener *listener, void *data) {
struct wlr_drm_connector *conn; struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) { wl_list_for_each(conn, &drm->outputs, link) {
struct wlr_output_state state = {0}; struct wlr_output_mode *mode = NULL;
if (conn->output.enabled && conn->output.current_mode != NULL) { if (conn->output.enabled && conn->output.current_mode != NULL) {
drm_connector_set_mode(conn, &state, conn->output.current_mode); mode = conn->output.current_mode;
} else {
drm_connector_set_mode(conn, &state, NULL);
} }
struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_ENABLED,
.enabled = mode != NULL,
.mode_type = WLR_OUTPUT_STATE_MODE_FIXED,
.mode = mode,
};
drm_connector_set_mode(conn, &state, mode);
} }
} else { } else {
wlr_log(WLR_INFO, "DRM fd paused"); wlr_log(WLR_INFO, "DRM fd paused");

17
backend/drm/drm.c
View file

@ -735,7 +735,12 @@ static void attempt_enable_needs_modeset(struct wlr_drm_backend *drm) {
conn->desired_enabled) { conn->desired_enabled) {
wlr_drm_conn_log(conn, WLR_DEBUG, wlr_drm_conn_log(conn, WLR_DEBUG,
"Output has a desired mode and a CRTC, attempting a modeset"); "Output has a desired mode and a CRTC, attempting a modeset");
struct wlr_output_state state = {0}; struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_ENABLED,
.enabled = true,
.mode_type = WLR_OUTPUT_STATE_MODE_FIXED,
.mode = conn->desired_mode,
};
drm_connector_set_mode(conn, &state, conn->desired_mode); drm_connector_set_mode(conn, &state, conn->desired_mode);
} }
} }
@ -1056,7 +1061,10 @@ static void dealloc_crtc(struct wlr_drm_connector *conn) {
conn->crtc->pending_modeset = true; conn->crtc->pending_modeset = true;
conn->crtc->pending.active = false; conn->crtc->pending.active = false;
struct wlr_output_state state = {0}; struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_ENABLED,
.enabled = false,
};
if (!drm_crtc_commit(conn, &state, 0)) { if (!drm_crtc_commit(conn, &state, 0)) {
// On GPU unplug, disabling the CRTC can fail with EPERM // On GPU unplug, disabling the CRTC can fail with EPERM
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to disable CRTC %"PRIu32, wlr_drm_conn_log(conn, WLR_ERROR, "Failed to disable CRTC %"PRIu32,
@ -1185,7 +1193,10 @@ static void realloc_crtcs(struct wlr_drm_backend *drm) {
struct wlr_drm_mode *mode = struct wlr_drm_mode *mode =
(struct wlr_drm_mode *)conn->output.current_mode; (struct wlr_drm_mode *)conn->output.current_mode;
struct wlr_output_state state = {0}; struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_ENABLED,
.enabled = true,
};
if (!drm_connector_init_renderer(conn, &state, mode)) { if (!drm_connector_init_renderer(conn, &state, mode)) {
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to initialize renderer"); wlr_drm_conn_log(conn, WLR_ERROR, "Failed to initialize renderer");
wlr_output_update_enabled(&conn->output, false); wlr_output_update_enabled(&conn->output, false);