Merge pull request #1426 from emersion/drm-disappear-index

backend/drm: fix disappeared output indices
This commit is contained in:
Drew DeVault 2018-12-09 12:54:52 -05:00 committed by GitHub
commit 6161a153c8
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 41 additions and 28 deletions

View file

@ -991,36 +991,43 @@ static void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
}
}
static uint32_t get_possible_crtcs(int fd, uint32_t conn_id) {
drmModeConnector *conn = drmModeGetConnector(fd, conn_id);
if (!conn) {
wlr_log_errno(WLR_ERROR, "Failed to get DRM connector");
return 0;
static uint32_t get_possible_crtcs(int fd, drmModeRes *res,
drmModeConnector *conn, bool is_mst) {
uint32_t ret = 0;
for (int i = 0; i < conn->count_encoders; ++i) {
drmModeEncoder *enc = drmModeGetEncoder(fd, conn->encoders[i]);
if (!enc) {
continue;
}
ret |= enc->possible_crtcs;
drmModeFreeEncoder(enc);
}
if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) {
wlr_log(WLR_ERROR, "Output is not connected");
goto error_conn;
// Sometimes DP MST connectors report no encoders, so we'll loop though
// all of the encoders of the MST type instead.
// TODO: See if there is a better solution.
if (!is_mst || ret) {
return ret;
}
drmModeEncoder *enc = NULL;
for (int i = 0; !enc && i < conn->count_encoders; ++i) {
enc = drmModeGetEncoder(fd, conn->encoders[i]);
for (int i = 0; i < res->count_encoders; ++i) {
drmModeEncoder *enc = drmModeGetEncoder(fd, res->encoders[i]);
if (!enc) {
continue;
}
if (enc->encoder_type == DRM_MODE_ENCODER_DPMST) {
ret |= enc->possible_crtcs;
}
drmModeFreeEncoder(enc);
}
if (!enc) {
wlr_log(WLR_ERROR, "Failed to get DRM encoder");
goto error_conn;
}
uint32_t ret = enc->possible_crtcs;
drmModeFreeEncoder(enc);
drmModeFreeConnector(conn);
return ret;
error_conn:
drmModeFreeConnector(conn);
return 0;
}
void scan_drm_connectors(struct wlr_drm_backend *drm) {
@ -1050,7 +1057,7 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
drmModeEncoder *curr_enc = drmModeGetEncoder(drm->fd,
drm_conn->encoder_id);
int index = -1;
ssize_t index = -1;
struct wlr_drm_connector *c, *wlr_conn = NULL;
wl_list_for_each(c, &drm->outputs, link) {
index++;
@ -1086,7 +1093,7 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wlr_conn->old_crtc = drmModeGetCrtc(drm->fd, curr_enc->crtc_id);
}
wl_list_insert(&drm->outputs, &wlr_conn->link);
wl_list_insert(drm->outputs.prev, &wlr_conn->link);
wlr_log(WLR_INFO, "Found connector '%s'", wlr_conn->output.name);
} else {
seen[index] = true;
@ -1167,7 +1174,8 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wl_list_insert(&wlr_conn->output.modes, &mode->wlr_mode.link);
}
wlr_conn->possible_crtc = get_possible_crtcs(drm->fd, wlr_conn->id);
wlr_conn->possible_crtc = get_possible_crtcs(drm->fd, res, drm_conn,
wlr_conn->props.path != 0);
if (wlr_conn->possible_crtc == 0) {
wlr_log(WLR_ERROR, "No CRTC possible for connector '%s'",
wlr_conn->output.name);
@ -1178,7 +1186,8 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wlr_conn->state = WLR_DRM_CONN_NEEDS_MODESET;
new_outputs[new_outputs_len++] = wlr_conn;
} else if (wlr_conn->state == WLR_DRM_CONN_CONNECTED &&
} else if ((wlr_conn->state == WLR_DRM_CONN_CONNECTED ||
wlr_conn->state == WLR_DRM_CONN_NEEDS_MODESET) &&
drm_conn->connection != DRM_MODE_CONNECTED) {
wlr_log(WLR_INFO, "'%s' disconnected", wlr_conn->output.name);
@ -1191,9 +1200,11 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
drmModeFreeResources(res);
// Iterate in reverse order because we'll remove items from the list and
// still want indices to remain correct.
struct wlr_drm_connector *conn, *tmp_conn;
size_t index = wl_list_length(&drm->outputs);
wl_list_for_each_safe(conn, tmp_conn, &drm->outputs, link) {
wl_list_for_each_reverse_safe(conn, tmp_conn, &drm->outputs, link) {
index--;
if (index >= seen_len || seen[index]) {
continue;

View file

@ -22,6 +22,7 @@ static const struct prop_info connector_info[] = {
{ "CRTC_ID", INDEX(crtc_id) },
{ "DPMS", INDEX(dpms) },
{ "EDID", INDEX(edid) },
{ "PATH", INDEX(path) },
{ "link-status", INDEX(link_status) },
#undef INDEX
};

View file

@ -15,6 +15,7 @@ union wlr_drm_connector_props {
uint32_t edid;
uint32_t dpms;
uint32_t link_status; // not guaranteed to exist
uint32_t path;
// atomic-modesetting only