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Diffstat (limited to 'backend/drm/drm.c')
-rw-r--r--backend/drm/drm.c88
1 files changed, 61 insertions, 27 deletions
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index d0bdfcd5..441ba24e 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -259,7 +259,8 @@ static void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
}
}
-static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in) {
+static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in,
+ bool *changed_outputs) {
// overlay, primary, cursor
for (int type = 0; type < 3; ++type) {
if (drm->num_type_planes[type] == 0) {
@@ -298,6 +299,7 @@ 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) {
+ changed_outputs[crtc_res[i]] = true;
if (*old) {
wlr_drm_surface_finish(&(*old)->surf);
}
@@ -308,10 +310,12 @@ 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) {
+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];
- uint32_t possible_crtc[wl_list_length(&drm->outputs)];
+ 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;
@@ -327,41 +331,50 @@ static void realloc_crtcs(struct wlr_drm_backend *drm, struct wlr_drm_connector
index = i;
}
- if (c->state != WLR_DRM_CONN_CONNECTED) {
- continue;
+ if (c->crtc) {
+ crtc[c->crtc - drm->crtcs] = i;
+ }
+
+ if (c->state == WLR_DRM_CONN_CONNECTED) {
+ possible_crtc[i] = c->possible_crtc;
}
- possible_crtc[i] = c->possible_crtc;
- crtc[c->crtc - drm->crtcs] = i;
}
assert(index != -1);
possible_crtc[index] = conn->possible_crtc;
- match_obj(wl_list_length(&drm->outputs), possible_crtc, drm->num_crtcs,
- crtc, crtc_res);
+ match_obj(wl_list_length(&drm->outputs), possible_crtc,
+ drm->num_crtcs, crtc, crtc_res);
- bool matched = false;
+ bool matched[num_outputs];
+ memset(matched, false, sizeof(matched));
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 && crtc_res[i] == UNMATCHED) {
- return;
- }
- if (crtc_res[i] == index) {
- matched = true;
+ 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) {
+ if (!matched[index]) {
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]]) {
+ 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) {
@@ -374,7 +387,7 @@ static void realloc_crtcs(struct wlr_drm_backend *drm, struct wlr_drm_connector
}
}
- realloc_planes(drm, crtc_res);
+ realloc_planes(drm, crtc_res, changed_outputs);
}
static uint32_t get_possible_crtcs(int fd, uint32_t conn_id) {
@@ -413,6 +426,7 @@ static bool wlr_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(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", conn->output.name,
mode->width, mode->height, mode->refresh);
@@ -422,7 +436,8 @@ static bool wlr_drm_connector_set_mode(struct wlr_output *output,
goto error_conn;
}
- realloc_crtcs(drm, conn);
+ memset(changed_outputs, false, sizeof(changed_outputs));
+ realloc_crtcs(drm, conn, changed_outputs);
if (!conn->crtc) {
wlr_log(L_ERROR, "Unable to match %s with a CRTC", conn->output.name);
@@ -437,18 +452,23 @@ static bool wlr_drm_connector_set_mode(struct wlr_output *output,
crtc->cursor ? crtc->cursor - drm->cursor_planes : -1);
conn->state = WLR_DRM_CONN_CONNECTED;
- conn->output.width = mode->width;
- conn->output.height = mode->height;
conn->output.current_mode = mode;
- wl_signal_emit(&conn->output.events.resolution, &conn->output);
+ if (conn->output.width != mode->width || conn->output.height != mode->height) {
+ conn->output.width = mode->width;
+ conn->output.height = mode->height;
+ wl_signal_emit(&conn->output.events.resolution, &conn->output);
+ }
// Since realloc_crtcs can deallocate planes on OTHER outputs,
- // we actually need to reinitalise all of them
+ // we actually need to reinitalise any than has changed
+ ssize_t output_index = -1;
wl_list_for_each(conn, &drm->outputs, link) {
+ output_index += 1;
struct wlr_output_mode *mode = conn->output.current_mode;
struct wlr_drm_crtc *crtc = conn->crtc;
- if (conn->state != WLR_DRM_CONN_CONNECTED) {
+ if (conn->state != WLR_DRM_CONN_CONNECTED ||
+ !changed_outputs[output_index]) {
continue;
}
@@ -698,6 +718,9 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
wlr_log_errno(L_ERROR, "Failed to get DRM connector");
continue;
}
+ drmModeEncoder *curr_enc = drmModeGetEncoder(drm->fd,
+ drm_conn->encoder_id);
+
int index = -1;
struct wlr_drm_connector *c, *wlr_conn = NULL;
wl_list_for_each(c, &drm->outputs, link) {
@@ -707,10 +730,12 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
break;
}
}
+
if (!wlr_conn) {
wlr_conn = calloc(1, sizeof(*wlr_conn));
if (!wlr_conn) {
wlr_log_errno(L_ERROR, "Allocation failed");
+ drmModeFreeEncoder(curr_enc);
drmModeFreeConnector(drm_conn);
continue;
}
@@ -724,11 +749,8 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
wlr_conn->state = WLR_DRM_CONN_DISCONNECTED;
wlr_conn->id = drm_conn->connector_id;
- drmModeEncoder *curr_enc = drmModeGetEncoder(drm->fd,
- drm_conn->encoder_id);
if (curr_enc) {
wlr_conn->old_crtc = drmModeGetCrtc(drm->fd, curr_enc->crtc_id);
- drmModeFreeEncoder(curr_enc);
}
wlr_conn->output.phys_width = drm_conn->mmWidth;
@@ -753,6 +775,17 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
seen[index] = true;
}
+ if (curr_enc) {
+ for (size_t i = 0; i < drm->num_crtcs; ++i) {
+ if (drm->crtcs[i].id == curr_enc->crtc_id) {
+ wlr_conn->crtc = &drm->crtcs[i];
+ break;
+ }
+ }
+ } else {
+ wlr_conn->crtc = NULL;
+ }
+
if (wlr_conn->state == WLR_DRM_CONN_DISCONNECTED &&
drm_conn->connection == DRM_MODE_CONNECTED) {
wlr_log(L_INFO, "'%s' connected", wlr_conn->output.name);
@@ -790,6 +823,7 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
wlr_drm_connector_cleanup(wlr_conn);
}
+ drmModeFreeEncoder(curr_enc);
drmModeFreeConnector(drm_conn);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 20:01:37 +0000