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-rw-r--r--backend/drm/drm.c402
-rw-r--r--include/backend/drm/drm.h1
2 files changed, 227 insertions, 176 deletions
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 5396dcd4..a6608877 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -404,9 +404,11 @@ static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in,
struct wlr_drm_plane *new = &drm->type_planes[type][crtc_res[i]];
if (*old != new) {
- wlr_log(WLR_DEBUG, "Assigning plane %d -> %d to CRTC %d",
+ wlr_log(WLR_DEBUG,
+ "Assigning plane %d -> %d (type %zu) to CRTC %d",
*old ? (int)(*old)->id : -1,
new ? (int)new->id : -1,
+ type,
c->id);
changed_outputs[crtc_res[i]] = true;
@@ -420,192 +422,41 @@ static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in,
}
}
-static void realloc_crtcs(struct wlr_drm_backend *drm,
- struct wlr_drm_connector *conn, bool *changed_outputs) {
- uint32_t crtc[drm->num_crtcs];
- uint32_t crtc_res[drm->num_crtcs];
- ssize_t num_outputs = wl_list_length(&drm->outputs);
- uint32_t possible_crtc[num_outputs];
-
- for (size_t i = 0; i < drm->num_crtcs; ++i) {
- crtc[i] = UNMATCHED;
- }
-
- memset(possible_crtc, 0, sizeof(possible_crtc));
-
- wlr_log(WLR_DEBUG, "Reallocating CRTCs for output '%s'", conn->output.name);
-
- ssize_t index = -1, i = -1;
- struct wlr_drm_connector *c;
- wl_list_for_each(c, &drm->outputs, link) {
- i++;
- if (c == conn) {
- index = i;
- }
-
- wlr_log(WLR_DEBUG, "output '%s' crtc=%p state=%d",
- c->output.name, c->crtc, c->state);
-
- if (c->crtc) {
- crtc[c->crtc - drm->crtcs] = i;
- }
-
- if (c->state == WLR_DRM_CONN_CONNECTED) {
- possible_crtc[i] = c->possible_crtc;
- }
- }
- assert(index != -1);
-
- possible_crtc[index] = conn->possible_crtc;
- match_obj(wl_list_length(&drm->outputs), possible_crtc,
- drm->num_crtcs, crtc, crtc_res);
-
- bool matched[num_outputs];
- memset(matched, false, sizeof(matched));
- for (size_t i = 0; i < drm->num_crtcs; ++i) {
- if (crtc_res[i] != UNMATCHED) {
- matched[crtc_res[i]] = true;
- }
- }
-
- // There is no point doing anything if this monitor doesn't get activated
- if (!matched[index]) {
- wlr_log(WLR_DEBUG, "Could not match a CRTC for this output");
- return;
- }
-
- 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]]) {
- wlr_log(WLR_DEBUG, "Could not match a CRTC for other output %d",
- crtc[i]);
- return;
- }
- }
-
- changed_outputs[index] = true;
-
- for (size_t i = 0; i < drm->num_crtcs; ++i) {
- if (crtc_res[i] == UNMATCHED) {
- 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++;
- }
- c->crtc = &drm->crtcs[i];
-
- wlr_log(WLR_DEBUG, "Assigning CRTC %d to output '%s'",
- drm->crtcs[i].id, c->output.name);
- }
- }
-
- realloc_planes(drm, crtc_res, 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;
- }
-
- if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) {
- wlr_log(WLR_ERROR, "Output is not connected");
- goto error_conn;
- }
-
- drmModeEncoder *enc = NULL;
- for (int i = 0; !enc && i < conn->count_encoders; ++i) {
- enc = drmModeGetEncoder(fd, conn->encoders[i]);
- }
-
- 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;
-}
-
static void drm_connector_cleanup(struct wlr_drm_connector *conn);
static bool drm_connector_set_mode(struct wlr_output *output,
struct wlr_output_mode *mode) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
- bool changed_outputs[wl_list_length(&drm->outputs)];
-
- wlr_log(WLR_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", conn->output.name,
- mode->width, mode->height, mode->refresh);
-
- conn->possible_crtc = get_possible_crtcs(drm->fd, conn->id);
- if (conn->possible_crtc == 0) {
- goto error_conn;
+ 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
+ conn->desired_mode = mode;
+ return false;
}
- memset(changed_outputs, false, sizeof(changed_outputs));
- realloc_crtcs(drm, conn, changed_outputs);
+ wlr_log(WLR_INFO, "Modesetting '%s' with '%ux%u@%u mHz'",
+ conn->output.name, mode->width, mode->height, mode->refresh);
- struct wlr_drm_crtc *crtc = conn->crtc;
- if (!crtc) {
- wlr_log(WLR_ERROR, "Unable to match %s with a CRTC", conn->output.name);
+ if (!init_drm_plane_surfaces(conn->crtc->primary, drm,
+ mode->width, mode->height, GBM_FORMAT_XRGB8888)) {
+ wlr_log(WLR_ERROR, "Failed to initialize renderer for plane");
return false;
}
- wlr_log(WLR_DEBUG, "%s: crtc=%td ovr=%td pri=%td cur=%td", conn->output.name,
- crtc - drm->crtcs,
- crtc->overlay ? crtc->overlay - drm->overlay_planes : -1,
- crtc->primary ? crtc->primary - drm->primary_planes : -1,
- crtc->cursor ? crtc->cursor - drm->cursor_planes : -1);
conn->state = WLR_DRM_CONN_CONNECTED;
+ conn->desired_mode = NULL;
wlr_output_update_mode(&conn->output, mode);
+ wlr_output_update_enabled(&conn->output, true);
+
+ drm_connector_start_renderer(conn);
// When switching VTs, the mode is not updated but the buffers become
// invalid, so we need to manually damage the output here
wlr_output_damage_whole(&conn->output);
- // Since realloc_crtcs can deallocate planes on OTHER outputs,
- // we actually need to reinitialize any that has changed
- ssize_t output_index = -1;
- wl_list_for_each(conn, &drm->outputs, link) {
- output_index++;
- struct wlr_output_mode *mode = conn->output.current_mode;
- struct wlr_drm_crtc *crtc = conn->crtc;
-
- if (conn->state != WLR_DRM_CONN_CONNECTED ||
- !changed_outputs[output_index]) {
- continue;
- }
-
- if (!init_drm_plane_surfaces(crtc->primary, drm,
- mode->width, mode->height, GBM_FORMAT_XRGB8888)) {
- wlr_log(WLR_ERROR, "Failed to initialize renderer for plane");
- goto error_conn;
- }
-
- drm_connector_start_renderer(conn);
- }
-
return true;
-
-error_conn:
- drm_connector_cleanup(conn);
- return false;
}
bool wlr_drm_connector_add_mode(struct wlr_output *output,
@@ -855,6 +706,167 @@ static const int32_t subpixel_map[] = {
[DRM_MODE_SUBPIXEL_NONE] = WL_OUTPUT_SUBPIXEL_NONE,
};
+static void dealloc_crtc(struct wlr_drm_connector *conn) {
+ struct wlr_drm_backend *drm = (struct wlr_drm_backend *)conn->output.backend;
+ if (conn->crtc == NULL) {
+ return;
+ }
+
+ for (size_t type = 0; type < 3; ++type) {
+ struct wlr_drm_plane *plane = conn->crtc->planes[type];
+ if (plane == NULL) {
+ continue;
+ }
+
+ finish_drm_surface(&plane->surf);
+ conn->crtc->planes[type] = NULL;
+ }
+
+ drm->iface->conn_enable(drm, conn, false);
+
+ conn->crtc = NULL;
+}
+
+void realloc_crtcs(struct wlr_drm_backend *drm, bool *changed_outputs) {
+ size_t num_outputs = wl_list_length(&drm->outputs);
+
+ wlr_log(WLR_DEBUG, "Reallocating CRTCs");
+
+ uint32_t crtc[drm->num_crtcs];
+ for (size_t i = 0; i < drm->num_crtcs; ++i) {
+ crtc[i] = UNMATCHED;
+ }
+
+ uint32_t possible_crtc[num_outputs];
+ memset(possible_crtc, 0, sizeof(possible_crtc));
+
+ wlr_log(WLR_DEBUG, "State before reallocation:");
+ ssize_t i = -1;
+ struct wlr_drm_connector *conn;
+ wl_list_for_each(conn, &drm->outputs, link) {
+ i++;
+
+ wlr_log(WLR_DEBUG, " '%s' crtc=%d state=%d", conn->output.name,
+ conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1, conn->state);
+
+ if (conn->crtc) {
+ crtc[conn->crtc - drm->crtcs] = i;
+ }
+
+ if (conn->state == WLR_DRM_CONN_CONNECTED ||
+ conn->state == WLR_DRM_CONN_NEEDS_MODESET) {
+ possible_crtc[i] = conn->possible_crtc;
+ }
+ }
+
+ uint32_t crtc_res[drm->num_crtcs];
+ match_obj(wl_list_length(&drm->outputs), possible_crtc,
+ drm->num_crtcs, crtc, crtc_res);
+
+ bool matched[num_outputs];
+ memset(matched, false, sizeof(matched));
+ for (size_t i = 0; i < drm->num_crtcs; ++i) {
+ if (crtc_res[i] != UNMATCHED) {
+ matched[crtc_res[i]] = true;
+ }
+ }
+
+ 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]]) {
+ wlr_log(WLR_DEBUG, "Could not match a CRTC for connected output %d",
+ crtc[i]);
+ return;
+ }
+ }
+
+ for (size_t i = 0; i < drm->num_crtcs; ++i) {
+ if (crtc_res[i] == UNMATCHED) {
+ 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++;
+ }
+
+ dealloc_crtc(c);
+ c->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);
+ }
+ }
+
+ 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);
+ }
+
+ realloc_planes(drm, crtc_res, changed_outputs);
+
+ // We need to reinitialize any plane that has changed
+ i = -1;
+ wl_list_for_each(conn, &drm->outputs, link) {
+ i++;
+ struct wlr_output_mode *mode = conn->output.current_mode;
+
+ if (conn->state != WLR_DRM_CONN_CONNECTED || !changed_outputs[i]) {
+ continue;
+ }
+ assert(conn->crtc);
+
+ if (!init_drm_plane_surfaces(conn->crtc->primary, drm,
+ mode->width, mode->height, GBM_FORMAT_XRGB8888)) {
+ wlr_log(WLR_ERROR, "Failed to initialize renderer for plane");
+ drm_connector_cleanup(conn);
+ break;
+ }
+
+ drm_connector_start_renderer(conn);
+ }
+}
+
+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;
+ }
+
+ if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) {
+ wlr_log(WLR_ERROR, "Output is not connected");
+ goto error_conn;
+ }
+
+ drmModeEncoder *enc = NULL;
+ for (int i = 0; !enc && i < conn->count_encoders; ++i) {
+ enc = drmModeGetEncoder(fd, conn->encoders[i]);
+ }
+
+ 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) {
wlr_log(WLR_INFO, "Scanning DRM connectors");
@@ -910,17 +922,16 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wlr_conn->state = WLR_DRM_CONN_DISCONNECTED;
wlr_conn->id = drm_conn->connector_id;
+ snprintf(wlr_conn->output.name, sizeof(wlr_conn->output.name),
+ "%s-%"PRIu32, conn_get_name(drm_conn->connector_type),
+ drm_conn->connector_type_id);
+
if (curr_enc) {
wlr_conn->old_crtc = drmModeGetCrtc(drm->fd, curr_enc->crtc_id);
}
- snprintf(wlr_conn->output.name, sizeof(wlr_conn->output.name),
- "%s-%"PRIu32,
- conn_get_name(drm_conn->connector_type),
- drm_conn->connector_type_id);
-
wl_list_insert(&drm->outputs, &wlr_conn->link);
- wlr_log(WLR_INFO, "Found display '%s'", wlr_conn->output.name);
+ wlr_log(WLR_INFO, "Found connector '%s'", wlr_conn->output.name);
} else {
seen[index] = true;
}
@@ -976,6 +987,12 @@ 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);
+ if (wlr_conn->possible_crtc == 0) {
+ wlr_log(WLR_ERROR, "No CRTC possible for connector '%s'",
+ wlr_conn->output.name);
+ }
+
wlr_output_update_enabled(&wlr_conn->output, wlr_conn->crtc != NULL);
wlr_conn->state = WLR_DRM_CONN_NEEDS_MODESET;
@@ -984,7 +1001,6 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
drm_conn->connection != DRM_MODE_CONNECTED) {
wlr_log(WLR_INFO, "'%s' disconnected", wlr_conn->output.name);
- wlr_output_update_enabled(&wlr_conn->output, false);
drm_connector_cleanup(wlr_conn);
}
@@ -1011,6 +1027,26 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
free(conn);
}
+ bool changed_outputs[wl_list_length(&drm->outputs)];
+ memset(changed_outputs, false, sizeof(changed_outputs));
+ for (size_t i = 0; i < new_outputs_len; ++i) {
+ struct wlr_drm_connector *conn = new_outputs[i];
+
+ ssize_t pos = -1;
+ struct wlr_drm_connector *c;
+ wl_list_for_each(c, &drm->outputs, link) {
+ ++pos;
+ if (c == conn) {
+ break;
+ }
+ }
+ assert(pos >= 0);
+
+ changed_outputs[pos] = true;
+ }
+
+ realloc_crtcs(drm, changed_outputs);
+
for (size_t i = 0; i < new_outputs_len; ++i) {
struct wlr_drm_connector *conn = new_outputs[i];
@@ -1019,6 +1055,15 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wlr_signal_emit_safe(&drm->backend.events.new_output,
&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);
+ }
+ }
}
static void page_flip_handler(int fd, unsigned seq,
@@ -1114,23 +1159,28 @@ static void drm_connector_cleanup(struct wlr_drm_connector *conn) {
}
conn->output.current_mode = NULL;
+ conn->desired_mode = NULL;
struct wlr_drm_mode *mode, *tmp;
wl_list_for_each_safe(mode, tmp, &conn->output.modes, wlr_mode.link) {
wl_list_remove(&mode->wlr_mode.link);
free(mode);
}
+ conn->output.enabled = false;
+ conn->output.width = conn->output.height = conn->output.refresh = 0;
+
memset(&conn->output.make, 0, sizeof(conn->output.make));
memset(&conn->output.model, 0, sizeof(conn->output.model));
memset(&conn->output.serial, 0, sizeof(conn->output.serial));
- conn->crtc = NULL;
- conn->possible_crtc = 0;
conn->pageflip_pending = false;
/* Fallthrough */
case WLR_DRM_CONN_NEEDS_MODESET:
wlr_log(WLR_INFO, "Emitting destruction signal for '%s'",
conn->output.name);
+ dealloc_crtc(conn);
+ conn->possible_crtc = 0;
+ conn->desired_mode = NULL;
wlr_signal_emit_safe(&conn->output.events.destroy, &conn->output);
break;
case WLR_DRM_CONN_DISCONNECTED:
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
index 5d6ff231..fe279917 100644
--- a/include/backend/drm/drm.h
+++ b/include/backend/drm/drm.h
@@ -119,6 +119,7 @@ struct wlr_drm_connector {
struct wlr_output output;
enum wlr_drm_connector_state state;
+ struct wlr_output_mode *desired_mode;
uint32_t id;
struct wlr_drm_crtc *crtc;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 21:46:22 +0000