OMAPDSS: Implement display (dis)connect support

[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / omapdrm / omap_crtc.c

diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index 02075bfcd8fda95fb4a8f7dcdff51918ba41ce36..b2ab2f5d3cb9da50fa902365efe6146a7f59ed88 100644 (file)
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -94,6 +94,28 @@ uint32_t pipe2vbl(struct drm_crtc *crtc)
 static struct omap_crtc *omap_crtcs[8];
 
 /* we can probably ignore these until we support command-mode panels: */
+static int omap_crtc_connect(struct omap_overlay_manager *mgr,
+               struct omap_dss_output *dst)
+{
+       if (mgr->output)
+               return -EINVAL;
+
+       if ((mgr->supported_outputs & dst->id) == 0)
+               return -EINVAL;
+
+       dst->manager = mgr;
+       mgr->output = dst;
+
+       return 0;
+}
+
+static void omap_crtc_disconnect(struct omap_overlay_manager *mgr,
+               struct omap_dss_output *dst)
+{
+       mgr->output->manager = NULL;
+       mgr->output = NULL;
+}
+
 static void omap_crtc_start_update(struct omap_overlay_manager *mgr)
 {
 }
@@ -138,6 +160,8 @@ static void omap_crtc_unregister_framedone_handler(
 }
 
 static const struct dss_mgr_ops mgr_ops = {
+               .connect = omap_crtc_connect,
+               .disconnect = omap_crtc_disconnect,
                .start_update = omap_crtc_start_update,
                .enable = omap_crtc_enable,
                .disable = omap_crtc_disable,