diff options
Diffstat (limited to 'backend')
| -rw-r--r-- | backend/drm/drm.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/backend/drm/drm.c b/backend/drm/drm.c index 06548ed0..6d5d0de3 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -1341,6 +1341,24 @@ void scan_drm_connectors(struct wlr_drm_backend *drm, free(subconnector); + // Before iterating on the conn's modes, get the current KMS mode + // in use from the connector's CRTC. + drmModeModeInfo *current_modeinfo = NULL; + if (wlr_conn->crtc != NULL) { + if (wlr_conn->crtc->props.mode_id == 0) { + // Use the legacy drm interface. + if (wlr_conn->crtc->legacy_crtc->mode_valid) { + current_modeinfo = &wlr_conn->crtc->legacy_crtc->mode; + } + } else { + // Use the modern atomic drm interface. + size_t modeinfo_size = 0; + current_modeinfo = get_drm_prop_blob(drm->fd, wlr_conn->crtc->id, + wlr_conn->crtc->props.mode_id, &modeinfo_size); + assert(modeinfo_size == sizeof(drmModeModeInfo)); + } + } + wlr_log(WLR_INFO, "Detected modes:"); for (int i = 0; i < drm_conn->count_modes; ++i) { @@ -1363,6 +1381,21 @@ void scan_drm_connectors(struct wlr_drm_backend *drm, mode->wlr_mode.preferred = true; } + // If this is the current mode set on the conn's crtc, + // then set it as the conn's output current mode. + if (current_modeinfo != NULL && memcmp(&mode->drm_mode, + current_modeinfo, sizeof(*current_modeinfo)) == 0) { + // Update width, height, refresh, transform_matrix and current_mode + // of this connector's output. + wlr_output_update_mode(&wlr_conn->output, &mode->wlr_mode); + + uint64_t mode_id = 0; + get_drm_prop(drm->fd, wlr_conn->crtc->id, + wlr_conn->crtc->props.mode_id, &mode_id); + + wlr_conn->crtc->mode_id = mode_id; + } + wlr_log(WLR_INFO, " %"PRId32"x%"PRId32"@%"PRId32" %s", mode->wlr_mode.width, mode->wlr_mode.height, mode->wlr_mode.refresh, @@ -1371,6 +1404,12 @@ void scan_drm_connectors(struct wlr_drm_backend *drm, wl_list_insert(wlr_conn->output.modes.prev, &mode->wlr_mode.link); } + if (wlr_conn->crtc != NULL && wlr_conn->crtc->props.mode_id != 0) { + // free() the modeinfo pointer, but only + // if not using the legacy API. + free(current_modeinfo); + } + wlr_conn->possible_crtcs = drmModeConnectorGetPossibleCrtcs(drm->fd, drm_conn); if (wlr_conn->possible_crtcs == 0) { |