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backend/drm: de-allocate unused CRTCs

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They can be re-used by another output after a subsequent hotplug.
This commit is contained in:
emersion 2018-09-10 18:44:31 +02:00
parent 0086dbed09
commit 1fcecd68df
1 changed files with 15 additions and 11 deletions
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26
backend/drm/drm.c
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@ -783,28 +783,32 @@ void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
}
}
struct wlr_drm_connector *connectors[num_outputs];
i = 0;
wl_list_for_each(conn, &drm->outputs, link) {
connectors[i] = conn;
i++;
}
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (crtc_res[i] == UNMATCHED) {
// De-allocate CRTCs we don't use anymore
if (crtc[i] != UNMATCHED) {
dealloc_crtc(connectors[crtc[i]]);
}
continue;
}
if (crtc_res[i] != crtc[i]) {
changed_outputs[crtc_res[i]] = true;
struct wlr_drm_connector *c;
size_t pos = 0;
wl_list_for_each(c, &drm->outputs, link) {
if (pos == crtc_res[i]) {
break;
}
pos++;
}
struct wlr_drm_connector *conn = connectors[crtc_res[i]];
dealloc_crtc(c);
c->crtc = &drm->crtcs[i];
dealloc_crtc(conn);
conn->crtc = &drm->crtcs[i];
wlr_log(WLR_DEBUG, "Assigning CRTC %zu to output %d -> %d '%s'",
i, crtc[i], crtc_res[i], c->output.name);
i, crtc[i], crtc_res[i], conn->output.name);
}
}