From dfc69bfc93c0d2f943d21340e55a61c391794a71 Mon Sep 17 00:00:00 2001 From: Robert Foss Date: Fri, 20 Nov 2020 13:59:25 +0100 Subject: drm/bridge: Handle unsupported panels MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some panels are currently supported by lt9611, but not by the display itself. This causes issues where a mode unsupported by the display driver is picked by the bridge. Signed-off-by: Robert Foss Signed-off-by: Aníbal Limón --- drivers/gpu/drm/bridge/lontium-lt9611.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index d734d9402c35..f93a1fa50893 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -867,8 +867,14 @@ static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge, const struct drm_display_mode *mode) { struct lt9611_mode *lt9611_mode = lt9611_find_mode(mode); + struct lt9611 *lt9611 = bridge_to_lt9611(bridge); - return lt9611_mode ? MODE_OK : MODE_BAD; + if (!lt9611_mode || !lt9611) + return MODE_BAD; + else if (lt9611_mode->intfs > 1 && !lt9611->dsi1) + return MODE_PANEL; + else + return MODE_OK; } static void lt9611_bridge_pre_enable(struct drm_bridge *bridge) -- cgit v1.2.3