int uterm_display_get_dpms(const struct uterm_display *disp)
{
if (!disp || !display_is_conn(disp))
return UTERM_DPMS_OFF;
return disp->dpms;
}
int uterm_display_set_dpms(struct uterm_display *disp, int state)
{
if (!disp || !display_is_conn(disp))
return -EINVAL;
return VIDEO_CALL(disp->ops->set_dpms, 0, disp, state);
}
int uterm_display_activate(struct uterm_display *disp, struct uterm_mode *mode)
{
if (!disp || !display_is_conn(disp) || display_is_online(disp))
return -EINVAL;
if (!mode)
mode = disp->default_mode;
return VIDEO_CALL(disp->ops->activate, 0, disp, mode);
}
static void unbind_display(struct uterm_display *disp)
{
if (!display_is_conn(disp))
return;
VIDEO_CB(disp->video, disp, UTERM_GONE);
display_deactivate(disp);
disp->video = NULL;
disp->flags &= ~DISPLAY_AVAILABLE;
uterm_display_unref(disp);
}
static int display_set_dpms(struct uterm_display *disp, int state)
{
int i, ret, set;
drmModeConnector *conn;
drmModePropertyRes *prop;
if (!display_is_conn(disp) || !video_is_awake(disp->video))
return -EINVAL;
switch (state) {
case UTERM_DPMS_ON:
set = DRM_MODE_DPMS_ON;
break;
case UTERM_DPMS_STANDBY:
set = DRM_MODE_DPMS_STANDBY;
break;
case UTERM_DPMS_SUSPEND:
set = DRM_MODE_DPMS_SUSPEND;
break;
case UTERM_DPMS_OFF:
set = DRM_MODE_DPMS_OFF;
break;
default:
return -EINVAL;
}
log_info("setting DPMS of display %p to %s", disp,
uterm_dpms_to_name(state));
conn = drmModeGetConnector(disp->video->dumb.fd, disp->dumb.conn_id);
if (!conn) {
log_err("cannot get display connector");
return -EFAULT;
}
ret = 0;
for (i = 0; i < conn->count_props; ++i) {
prop = drmModeGetProperty(disp->video->dumb.fd, conn->props[i]);
if (!prop)
continue;
if (!strcmp(prop->name, "DPMS")) {
ret = drmModeConnectorSetProperty(disp->video->dumb.fd,
disp->dumb.conn_id, prop->prop_id, set);
if (ret) {
log_info("cannot set DPMS");
ret = -EFAULT;
}
drmModeFreeProperty(prop);
break;
}
drmModeFreeProperty(prop);
}
if (i == conn->count_props) {
ret = 0;
log_warn("display does not support DPMS");
state = UTERM_DPMS_UNKNOWN;
}
drmModeFreeConnector(conn);
disp->dpms = state;
return ret;
}
