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-rw-r--r--backend/drm/atomic.c3
-rw-r--r--backend/drm/drm.c138
-rw-r--r--backend/drm/util.c22
-rw-r--r--include/backend/drm/drm.h1
4 files changed, 109 insertions, 55 deletions
diff --git a/backend/drm/atomic.c b/backend/drm/atomic.c
index 335c9de1..90acac25 100644
--- a/backend/drm/atomic.c
+++ b/backend/drm/atomic.c
@@ -129,6 +129,9 @@ static bool atomic_crtc_pageflip(struct wlr_drm_backend *drm,
static bool atomic_conn_enable(struct wlr_drm_backend *drm,
struct wlr_drm_connector *conn, bool enable) {
struct wlr_drm_crtc *crtc = conn->crtc;
+ if (crtc == NULL) {
+ return !enable;
+ }
struct atomic atom;
atomic_begin(crtc, &atom);
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index e61e624d..eac3a312 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -342,14 +342,39 @@ static void drm_connector_start_renderer(struct wlr_drm_connector *conn) {
}
}
+static bool drm_connector_set_mode(struct wlr_output *output,
+ struct wlr_output_mode *mode);
+
+static void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs);
+
+static void attempt_enable_needs_modeset(struct wlr_drm_backend *drm) {
+ // Try to modeset any output that has a desired mode and a CRTC (ie. was
+ // lacking a CRTC on last modeset)
+ struct wlr_drm_connector *conn;
+ wl_list_for_each(conn, &drm->outputs, link) {
+ if (conn->state == WLR_DRM_CONN_NEEDS_MODESET &&
+ conn->crtc != NULL && conn->desired_mode != NULL &&
+ conn->desired_enabled) {
+ drm_connector_set_mode(&conn->output, conn->desired_mode);
+ }
+ }
+}
+
bool enable_drm_connector(struct wlr_output *output, bool enable) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
+ struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
if (conn->state != WLR_DRM_CONN_CONNECTED
&& conn->state != WLR_DRM_CONN_NEEDS_MODESET) {
return false;
}
- struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
+ conn->desired_enabled = enable;
+
+ if (enable && conn->crtc == NULL) {
+ // Maybe we can steal a CRTC from a disabled output
+ realloc_crtcs(drm, NULL);
+ }
+
bool ok = drm->iface->conn_enable(drm, conn, enable);
if (!ok) {
return false;
@@ -357,6 +382,10 @@ bool enable_drm_connector(struct wlr_output *output, bool enable) {
if (enable) {
drm_connector_start_renderer(conn);
+ } else {
+ realloc_crtcs(drm, NULL);
+
+ attempt_enable_needs_modeset(drm);
}
wlr_output_update_enabled(&conn->output, enable);
@@ -430,6 +459,10 @@ static bool drm_connector_set_mode(struct wlr_output *output,
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
if (conn->crtc == NULL) {
+ // Maybe we can steal a CRTC from a disabled output
+ realloc_crtcs(drm, NULL);
+ }
+ if (conn->crtc == NULL) {
wlr_log(WLR_ERROR, "Cannot modeset '%s': no CRTC for this connector",
conn->output.name);
// Save the desired mode for later, when we'll get a proper CRTC
@@ -450,6 +483,7 @@ static bool drm_connector_set_mode(struct wlr_output *output,
conn->desired_mode = NULL;
wlr_output_update_mode(&conn->output, mode);
wlr_output_update_enabled(&conn->output, true);
+ conn->desired_enabled = true;
drm_connector_start_renderer(conn);
@@ -731,17 +765,27 @@ static void dealloc_crtc(struct wlr_drm_connector *conn) {
conn->crtc = NULL;
}
-void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
+static void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
size_t num_outputs = wl_list_length(&drm->outputs);
+ if (changed_outputs == NULL) {
+ changed_outputs = calloc(num_outputs, sizeof(bool));
+ if (changed_outputs == NULL) {
+ wlr_log(WLR_ERROR, "Allocation failed");
+ return;
+ }
+ }
+
wlr_log(WLR_DEBUG, "Reallocating CRTCs");
- uint32_t crtc[drm->num_crtcs];
+ uint32_t crtc[drm->num_crtcs + 1];
for (size_t i = 0; i < drm->num_crtcs; ++i) {
crtc[i] = UNMATCHED;
}
- uint32_t possible_crtc[num_outputs];
+ struct wlr_drm_connector *connectors[num_outputs + 1];
+
+ uint32_t possible_crtc[num_outputs + 1];
memset(possible_crtc, 0, sizeof(possible_crtc));
wlr_log(WLR_DEBUG, "State before reallocation:");
@@ -749,25 +793,31 @@ void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {
i++;
+ connectors[i] = conn;
- wlr_log(WLR_DEBUG, " '%s' crtc=%d state=%d", conn->output.name,
- conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1, conn->state);
+ wlr_log(WLR_DEBUG, " '%s' crtc=%d state=%d desired_enabled=%d",
+ conn->output.name,
+ conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1,
+ conn->state, conn->desired_enabled);
if (conn->crtc) {
crtc[conn->crtc - drm->crtcs] = i;
}
- if (conn->state == WLR_DRM_CONN_CONNECTED ||
- conn->state == WLR_DRM_CONN_NEEDS_MODESET) {
+ // Only search CRTCs for user-enabled outputs (that are already
+ // connected or in need of a modeset)
+ if ((conn->state == WLR_DRM_CONN_CONNECTED ||
+ conn->state == WLR_DRM_CONN_NEEDS_MODESET) &&
+ conn->desired_enabled) {
possible_crtc[i] = conn->possible_crtc;
}
}
- uint32_t crtc_res[drm->num_crtcs];
+ uint32_t crtc_res[drm->num_crtcs + 1];
match_obj(wl_list_length(&drm->outputs), possible_crtc,
drm->num_crtcs, crtc, crtc_res);
- bool matched[num_outputs];
+ bool matched[num_outputs + 1];
memset(matched, false, sizeof(matched));
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (crtc_res[i] != UNMATCHED) {
@@ -777,34 +827,30 @@ void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
for (size_t i = 0; i < drm->num_crtcs; ++i) {
// We don't want any of the current monitors to be deactivated
- if (crtc[i] != UNMATCHED && !matched[crtc[i]]) {
+ if (crtc[i] != UNMATCHED && !matched[crtc[i]] &&
+ connectors[crtc[i]]->desired_enabled) {
wlr_log(WLR_DEBUG, "Could not match a CRTC for connected output %d",
crtc[i]);
return;
}
}
- 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]]);
- }
+ if (crtc_res[i] == crtc[i]) {
continue;
}
- if (crtc_res[i] != crtc[i]) {
+ // De-allocate this CRTC on previous output
+ if (crtc[i] != UNMATCHED) {
+ changed_outputs[crtc[i]] = true;
+ dealloc_crtc(connectors[crtc[i]]);
+ }
+
+ // Assign this CRTC to next output
+ if (crtc_res[i] != UNMATCHED) {
changed_outputs[crtc_res[i]] = true;
struct wlr_drm_connector *conn = connectors[crtc_res[i]];
-
dealloc_crtc(conn);
conn->crtc = &drm->crtcs[i];
@@ -815,8 +861,10 @@ void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
wlr_log(WLR_DEBUG, "State after reallocation:");
wl_list_for_each(conn, &drm->outputs, link) {
- wlr_log(WLR_DEBUG, " '%s' crtc=%d state=%d", conn->output.name,
- conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1, conn->state);
+ wlr_log(WLR_DEBUG, " '%s' crtc=%d state=%d desired_enabled=%d",
+ conn->output.name,
+ conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1,
+ conn->state, conn->desired_enabled);
}
realloc_planes(drm, crtc_res, changed_outputs);
@@ -827,10 +875,10 @@ void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
i++;
struct wlr_output_mode *mode = conn->output.current_mode;
- if (conn->state != WLR_DRM_CONN_CONNECTED || !changed_outputs[i]) {
+ if (conn->state != WLR_DRM_CONN_CONNECTED || !changed_outputs[i]
+ || conn->crtc == NULL) {
continue;
}
- assert(conn->crtc);
if (!init_drm_plane_surfaces(conn->crtc->primary, drm,
mode->width, mode->height, GBM_FORMAT_XRGB8888)) {
@@ -1004,6 +1052,7 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
}
wlr_output_update_enabled(&wlr_conn->output, wlr_conn->crtc != NULL);
+ wlr_conn->desired_enabled = true;
wlr_conn->state = WLR_DRM_CONN_NEEDS_MODESET;
new_outputs[new_outputs_len++] = wlr_conn;
@@ -1066,14 +1115,7 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
&conn->output);
}
- // Try to modeset any output that has a desired mode and a CRTC (ie. was
- // lacking a CRTC on last modeset)
- wl_list_for_each(conn, &drm->outputs, link) {
- if (conn->state == WLR_DRM_CONN_NEEDS_MODESET && conn->crtc != NULL &&
- conn->desired_mode != NULL) {
- drm_connector_set_mode(&conn->output, conn->desired_mode);
- }
- }
+ attempt_enable_needs_modeset(drm);
}
static void page_flip_handler(int fd, unsigned seq,
@@ -1082,7 +1124,7 @@ static void page_flip_handler(int fd, unsigned seq,
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)conn->output.backend;
conn->pageflip_pending = false;
- if (conn->state != WLR_DRM_CONN_CONNECTED) {
+ if (conn->state != WLR_DRM_CONN_CONNECTED || conn->crtc == NULL) {
return;
}
@@ -1155,16 +1197,18 @@ static void drm_connector_cleanup(struct wlr_drm_connector *conn) {
case WLR_DRM_CONN_CONNECTED:
case WLR_DRM_CONN_CLEANUP:;
struct wlr_drm_crtc *crtc = conn->crtc;
- for (int i = 0; i < 3; ++i) {
- if (!crtc->planes[i]) {
- continue;
- }
+ if (crtc != NULL) {
+ for (int i = 0; i < 3; ++i) {
+ if (!crtc->planes[i]) {
+ continue;
+ }
- finish_drm_surface(&crtc->planes[i]->surf);
- finish_drm_surface(&crtc->planes[i]->mgpu_surf);
- if (crtc->planes[i]->id == 0) {
- free(crtc->planes[i]);
- crtc->planes[i] = NULL;
+ finish_drm_surface(&crtc->planes[i]->surf);
+ finish_drm_surface(&crtc->planes[i]->mgpu_surf);
+ if (crtc->planes[i]->id == 0) {
+ free(crtc->planes[i]);
+ crtc->planes[i] = NULL;
+ }
}
}
diff --git a/backend/drm/util.c b/backend/drm/util.c
index 050da2a6..f9637c33 100644
--- a/backend/drm/util.c
+++ b/backend/drm/util.c
@@ -223,7 +223,8 @@ struct match_state {
static bool match_obj_(struct match_state *st, size_t skips, size_t score, size_t replaced, size_t i) {
// Finished
if (i >= st->num_res) {
- if (score > st->score || (score == st->score && replaced < st->replaced)) {
+ if (score > st->score ||
+ (score == st->score && replaced < st->replaced)) {
st->score = score;
st->replaced = replaced;
memcpy(st->best, st->res, sizeof(st->best[0]) * st->num_res);
@@ -243,29 +244,33 @@ static bool match_obj_(struct match_state *st, size_t skips, size_t score, size_
return match_obj_(st, skips + 1, score, replaced, i + 1);
}
+ bool has_best = false;
+
/*
* Attempt to use the current solution first, to try and avoid
* recalculating everything
*/
if (st->orig[i] != UNMATCHED && !is_taken(i, st->res, st->orig[i])) {
st->res[i] = st->orig[i];
- if (match_obj_(st, skips, score + 1, replaced, i + 1)) {
- return true;
+ size_t obj_score = st->objs[st->res[i]] != 0 ? 1 : 0;
+ if (match_obj_(st, skips, score + obj_score, replaced, i + 1)) {
+ has_best = true;
}
}
if (st->orig[i] == UNMATCHED) {
st->res[i] = UNMATCHED;
- match_obj_(st, skips, score, replaced, i + 1);
- if (st->exit_early) {
- return true;
+ if (match_obj_(st, skips, score, replaced, i + 1)) {
+ has_best = true;
}
}
+ if (st->exit_early) {
+ return true;
+ }
if (st->orig[i] != UNMATCHED) {
++replaced;
}
- bool has_best = false;
for (size_t candidate = 0; candidate < st->num_objs; ++candidate) {
// We tried this earlier
if (candidate == st->orig[i]) {
@@ -283,7 +288,8 @@ static bool match_obj_(struct match_state *st, size_t skips, size_t score, size_
}
st->res[i] = candidate;
- if (match_obj_(st, skips, score + 1, replaced, i + 1)) {
+ size_t obj_score = st->objs[candidate] != 0 ? 1 : 0;
+ if (match_obj_(st, skips, score + obj_score, replaced, i + 1)) {
has_best = true;
}
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
index 25225227..6fe031e2 100644
--- a/include/backend/drm/drm.h
+++ b/include/backend/drm/drm.h
@@ -120,6 +120,7 @@ struct wlr_drm_connector {
enum wlr_drm_connector_state state;
struct wlr_output_mode *desired_mode;
+ bool desired_enabled;
uint32_t id;
struct wlr_drm_crtc *crtc;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 06:21:31 +0000