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backend/drm: improve CRTC reallocation pretty printing

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Only print the list of connectors once, with both the old and new
status. Use CRTC object IDs instead of CRTC indices. Make it obvious
when a connector keeps the same CRTC.
This commit is contained in:
Simon Ser 2024-02-27 11:40:25 +01:00
parent db2b1892ad
commit 4b1713d203
1 changed files with 33 additions and 9 deletions
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42
backend/drm/drm.c
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@ -1216,6 +1216,14 @@ static void dealloc_crtc(struct wlr_drm_connector *conn) {
wlr_output_state_finish(&state);
}
static void format_nullable_crtc(char *str, size_t size, struct wlr_drm_crtc *crtc) {
if (crtc != NULL) {
snprintf(str, size, "CRTC %"PRIu32, crtc->id);
} else {
snprintf(str, size, "no CRTC");
}
}
static void realloc_crtcs(struct wlr_drm_backend *drm,
struct wlr_drm_connector *want_conn) {
assert(drm->num_crtcs > 0);
@ -1236,7 +1244,6 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
previous_match[i] = UNMATCHED;
}
wlr_log(WLR_DEBUG, "State before reallocation:");
size_t i = 0;
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->connectors, link) {
@ -1250,10 +1257,6 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
// connector the user wants to enable
bool want_crtc = conn == want_conn || conn->output.enabled;
wlr_log(WLR_DEBUG, " '%s': crtc=%d status=%s want_crtc=%d",
conn->name, conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1,
drm_connector_status_str(conn->status), want_crtc);
if (conn->status == DRM_MODE_CONNECTED && want_crtc) {
connector_constraints[i] = conn->possible_crtcs;
} else {
@ -1278,6 +1281,31 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
}
}
for (size_t i = 0; i < num_connectors; ++i) {
struct wlr_drm_connector *conn = connectors[i];
struct wlr_drm_crtc *new_crtc = NULL;
if (connector_match[i] >= 0) {
new_crtc = &drm->crtcs[connector_match[i]];
}
char old_crtc_str[16], new_crtc_str[16];
format_nullable_crtc(old_crtc_str, sizeof(old_crtc_str), conn->crtc);
format_nullable_crtc(new_crtc_str, sizeof(new_crtc_str), new_crtc);
char crtc_str[64];
if (conn->crtc != new_crtc) {
snprintf(crtc_str, sizeof(crtc_str), "%s → %s", old_crtc_str, new_crtc_str);
} else {
snprintf(crtc_str, sizeof(crtc_str), "%s (no change)", new_crtc_str);
}
wlr_log(WLR_DEBUG, " Connector %s (%s%s): %s",
conn->name, drm_connector_status_str(conn->status),
connector_constraints[i] != 0 ? ", needs CRTC" : "",
crtc_str);
}
// Refuse to remove a CRTC from an enabled connector, and refuse to
// change the CRTC of an enabled connector.
for (size_t i = 0; i < num_connectors; ++i) {
@ -1299,13 +1327,9 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
}
// Apply new configuration
wlr_log(WLR_DEBUG, "State after reallocation:");
for (size_t i = 0; i < num_connectors; ++i) {
struct wlr_drm_connector *conn = connectors[i];
wlr_log(WLR_DEBUG, " '%s': crtc=%zd",
conn->name, connector_match[i]);
if (conn->crtc != NULL && connector_match[i] == conn->crtc - drm->crtcs) {
// We don't need to change anything
continue;