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