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backend/drm: add support for the link-status property

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This commit is contained in:
emersion 2018-10-04 14:11:37 +02:00
parent 43af104fa3
commit f5a147b739
4 changed files with 34 additions and 7 deletions
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7
backend/drm/atomic.c
View file

@ -104,7 +104,8 @@ static bool atomic_crtc_pageflip(struct wlr_drm_backend *drm,
drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
}
if (drmModeCreatePropertyBlob(drm->fd, mode, sizeof(*mode), &crtc->mode_id)) {
if (drmModeCreatePropertyBlob(drm->fd, mode, sizeof(*mode),
&crtc->mode_id)) {
wlr_log_errno(WLR_ERROR, "Unable to create property blob");
return false;
}
@ -120,6 +121,10 @@ static bool atomic_crtc_pageflip(struct wlr_drm_backend *drm,
struct atomic atom;
atomic_begin(crtc, &atom);
atomic_add(&atom, conn->id, conn->props.crtc_id, crtc->id);
if (mode != NULL && conn->props.link_status != 0) {
atomic_add(&atom, conn->id, conn->props.link_status,
DRM_MODE_LINK_STATUS_GOOD);
}
atomic_add(&atom, crtc->id, crtc->props.mode_id, crtc->mode_id);
atomic_add(&atom, crtc->id, crtc->props.active, 1);
set_plane_props(&atom, crtc->primary, crtc->id, fb_id, true);

18
backend/drm/drm.c
View file

@ -1034,6 +1034,24 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wlr_conn->crtc = NULL;
}
// This can only happen *after* hotplug, since we haven't read the
// connector properties yet
if (wlr_conn->props.link_status != 0) {
uint64_t link_status;
if (!get_drm_prop(drm->fd, wlr_conn->id,
wlr_conn->props.link_status, &link_status)) {
wlr_log(WLR_ERROR, "Failed to get link status for '%s'",
wlr_conn->output.name);
continue;
}
if (link_status == DRM_MODE_LINK_STATUS_BAD) {
// We need to reload our list of modes and force a modeset
wlr_log(WLR_INFO, "Bad link for '%s'", wlr_conn->output.name);
drm_connector_cleanup(wlr_conn);
}
}
if (wlr_conn->state == WLR_DRM_CONN_DISCONNECTED &&
drm_conn->connection == DRM_MODE_CONNECTED) {
wlr_log(WLR_INFO, "'%s' connected", wlr_conn->output.name);

13
backend/drm/properties.c
View file

@ -19,9 +19,10 @@ struct prop_info {
static const struct prop_info connector_info[] = {
#define INDEX(name) (offsetof(union wlr_drm_connector_props, name) / sizeof(uint32_t))
{ "CRTC_ID", INDEX(crtc_id) },
{ "DPMS", INDEX(dpms) },
{ "EDID", INDEX(edid) },
{ "CRTC_ID", INDEX(crtc_id) },
{ "DPMS", INDEX(dpms) },
{ "EDID", INDEX(edid) },
{ "link-status", INDEX(link_status) },
#undef INDEX
};
@ -87,7 +88,8 @@ static bool scan_properties(int fd, uint32_t id, uint32_t type, uint32_t *result
return true;
}
bool get_drm_connector_props(int fd, uint32_t id, union wlr_drm_connector_props *out) {
bool get_drm_connector_props(int fd, uint32_t id,
union wlr_drm_connector_props *out) {
return scan_properties(fd, id, DRM_MODE_OBJECT_CONNECTOR, out->props,
connector_info, sizeof(connector_info) / sizeof(connector_info[0]));
}
@ -103,7 +105,8 @@ bool get_drm_plane_props(int fd, uint32_t id, union wlr_drm_plane_props *out) {
}
bool get_drm_prop(int fd, uint32_t obj, uint32_t prop, uint64_t *ret) {
drmModeObjectProperties *props = drmModeObjectGetProperties(fd, obj, DRM_MODE_OBJECT_ANY);
drmModeObjectProperties *props =
drmModeObjectGetProperties(fd, obj, DRM_MODE_OBJECT_ANY);
if (!props) {
return false;
}

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

@ -14,12 +14,13 @@ union wlr_drm_connector_props {
struct {
uint32_t edid;
uint32_t dpms;
uint32_t link_status; // not guaranteed to exist
// atomic-modesetting only
uint32_t crtc_id;
};
uint32_t props[3];
uint32_t props[4];
};
union wlr_drm_crtc_props {