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backend/drm: atomically reset state after VT switch

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Allows the KMS driver to parallelize the modesets, so should be
faster than going through each CRTC one by one.
This commit is contained in:
Simon Ser 2024-02-14 18:54:01 +01:00
parent 836cb820d0
commit 505175e56f
5 changed files with 61 additions and 14 deletions
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11
backend/drm/backend.c
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@ -131,14 +131,9 @@ static void handle_session_active(struct wl_listener *listener, void *data) {
// configurations. The connector/CRTC mapping may have changed, so
// first disable all CRTCs, then light up the ones we were using
// before the VT switch.
// TODO: use the atomic API to improve restoration after a VT switch
for (size_t i = 0; i < drm->num_crtcs; i++) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
if (drmModeSetCrtc(drm->fd, crtc->id, 0, 0, 0, NULL, 0, NULL) != 0) {
wlr_log_errno(WLR_ERROR, "Failed to disable CRTC %"PRIu32" after VT switch",
crtc->id);
}
// TODO: better use the atomic API to improve restoration after a VT switch
if (!drm->iface->reset(drm)) {
wlr_log(WLR_ERROR, "Failed to reset state after VT switch");
}
struct wlr_drm_connector *conn;