From acde541324dcfe443791da2f3926614d35429222 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 13 Jan 2014 12:56:19 +0100 Subject: drm/tegra: Clarify how panel modes override others When a panel advertises one or more modes, they are used exclusively. Other methods for obtaining the mode, such as DDC as used for HDMI or binary EDID blobs embedded in the DT, are ignored. The panel drivers should be providing this functionality if they want to expose it as well. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/output.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index f1b5030f55e3..921e4001a090 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -18,6 +18,10 @@ static int tegra_connector_get_modes(struct drm_connector *connector) struct edid *edid = NULL; int err = 0; + /* + * If the panel provides one or more modes, use them exclusively and + * ignore any other means of obtaining a mode. + */ if (output->panel) { err = output->panel->funcs->get_modes(output->panel); if (err > 0) -- cgit v1.2.3