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backend/drm: init wlr_drm_plane for all plane types

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This commit is contained in:
Simon Ser 2023-01-04 19:12:46 +01:00
parent c3d969d2d4
commit b4e9487312
2 changed files with 50 additions and 71 deletions
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118
backend/drm/drm.c
View file

@ -104,21 +104,23 @@ bool check_drm_features(struct wlr_drm_backend *drm) {
return true;
}
static bool add_plane(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, const drmModePlane *drm_plane,
uint32_t type, union wlr_drm_plane_props *props) {
assert(!(type == DRM_PLANE_TYPE_PRIMARY && crtc->primary));
assert(!(type == DRM_PLANE_TYPE_CURSOR && crtc->cursor));
static bool init_plane(struct wlr_drm_backend *drm,
struct wlr_drm_plane *p, const drmModePlane *drm_plane) {
uint32_t id = drm_plane->plane_id;
struct wlr_drm_plane *p = calloc(1, sizeof(*p));
if (!p) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
union wlr_drm_plane_props props = {0};
if (!get_drm_plane_props(drm->fd, id, &props)) {
return false;
}
uint64_t type;
if (!get_drm_prop(drm->fd, id, props.type, &type)) {
return false;
}
p->type = type;
p->id = drm_plane->plane_id;
p->props = *props;
p->props = props;
for (size_t i = 0; i < drm_plane->count_formats; ++i) {
// Force a LINEAR layout for the cursor if the driver doesn't support
@ -152,15 +154,22 @@ static bool add_plane(struct wlr_drm_backend *drm,
drmModeFreePropertyBlob(blob);
}
switch (type) {
case DRM_PLANE_TYPE_PRIMARY:
crtc->primary = p;
break;
case DRM_PLANE_TYPE_CURSOR:
crtc->cursor = p;
break;
default:
abort();
assert(drm->num_crtcs <= 32);
for (size_t j = 0; j < drm->num_crtcs; j++) {
uint32_t crtc_bit = 1 << j;
if ((drm_plane->possible_crtcs & crtc_bit) == 0) {
continue;
}
struct wlr_drm_crtc *crtc = &drm->crtcs[j];
if (type == DRM_PLANE_TYPE_PRIMARY && !crtc->primary) {
crtc->primary = p;
break;
}
if (type == DRM_PLANE_TYPE_CURSOR && !crtc->cursor) {
crtc->cursor = p;
break;
}
}
return true;
@ -179,66 +188,35 @@ static bool init_planes(struct wlr_drm_backend *drm) {
wlr_log(WLR_INFO, "Found %"PRIu32" DRM planes", plane_res->count_planes);
drm->num_planes = plane_res->count_planes;
drm->planes = calloc(drm->num_planes, sizeof(*drm->planes));
if (drm->planes == NULL) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
goto error;
}
for (uint32_t i = 0; i < plane_res->count_planes; ++i) {
uint32_t id = plane_res->planes[i];
drmModePlane *plane = drmModeGetPlane(drm->fd, id);
if (!plane) {
drmModePlane *drm_plane = drmModeGetPlane(drm->fd, id);
if (!drm_plane) {
wlr_log_errno(WLR_ERROR, "Failed to get DRM plane");
goto error;
}
union wlr_drm_plane_props props = {0};
if (!get_drm_plane_props(drm->fd, id, &props)) {
drmModeFreePlane(plane);
struct wlr_drm_plane *plane = &drm->planes[i];
if (!init_plane(drm, plane, drm_plane)) {
goto error;
}
uint64_t type;
if (!get_drm_prop(drm->fd, id, props.type, &type)) {
drmModeFreePlane(plane);
goto error;
}
// We don't really care about overlay planes, as we don't support them
// yet.
if (type == DRM_PLANE_TYPE_OVERLAY) {
drmModeFreePlane(plane);
continue;
}
assert(drm->num_crtcs <= 32);
struct wlr_drm_crtc *crtc = NULL;
for (size_t j = 0; j < drm->num_crtcs ; j++) {
uint32_t crtc_bit = 1 << j;
if ((plane->possible_crtcs & crtc_bit) == 0) {
continue;
}
struct wlr_drm_crtc *candidate = &drm->crtcs[j];
if ((type == DRM_PLANE_TYPE_PRIMARY && !candidate->primary) ||
(type == DRM_PLANE_TYPE_CURSOR && !candidate->cursor)) {
crtc = candidate;
break;
}
}
if (!crtc) {
drmModeFreePlane(plane);
continue;
}
if (!add_plane(drm, crtc, plane, type, &props)) {
drmModeFreePlane(plane);
goto error;
}
drmModeFreePlane(plane);
drmModeFreePlane(drm_plane);
}
drmModeFreePlaneResources(plane_res);
return true;
error:
free(drm->planes);
drmModeFreePlaneResources(plane_res);
return false;
}
@ -310,18 +288,16 @@ void finish_drm_resources(struct wlr_drm_backend *drm) {
if (crtc->gamma_lut) {
drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut);
}
if (crtc->primary) {
wlr_drm_format_set_finish(&crtc->primary->formats);
free(crtc->primary);
}
if (crtc->cursor) {
wlr_drm_format_set_finish(&crtc->cursor->formats);
free(crtc->cursor);
}
}
free(drm->crtcs);
for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *plane = &drm->planes[i];
wlr_drm_format_set_finish(&plane->formats);
}
free(drm->planes);
}
static struct wlr_drm_connector *get_drm_connector_from_output(

3
include/backend/drm/drm.h
View file

@ -64,6 +64,9 @@ struct wlr_drm_backend {
size_t num_crtcs;
struct wlr_drm_crtc *crtcs;
size_t num_planes;
struct wlr_drm_plane *planes;
struct wl_display *display;
struct wl_event_source *drm_event;