drm/bridge: tc358767: read display_props in get_modes()

We need to know the link bandwidth to filter out modes we cannot
support, so we need to have read the display props before doing the
filtering.

To ensure we have up to date display props, call tc_get_display_props()
in the beginning of tc_connector_get_modes().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528082747.3631-22-tomi.valkeinen@ti.com

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index ffcbecf69d4014aadc7fd00c6505baeaa20075f9..2b9d6046d76ec9d719e203cf907f9c8ad2f78029 100644 (file)
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1188,6 +1188,13 @@ static int tc_connector_get_modes(struct drm_connector *connector)
        struct tc_data *tc = connector_to_tc(connector);
        struct edid *edid;
        unsigned int count;
+       int ret;
+
+       ret = tc_get_display_props(tc);
+       if (ret < 0) {
+               dev_err(tc->dev, "failed to read display props: %d\n", ret);
+               return 0;
+       }
 
        if (tc->panel && tc->panel->funcs && tc->panel->funcs->get_modes) {
                count = tc->panel->funcs->get_modes(tc->panel);