Commit acde5413 authored Jan 13, 2014 by Thierry Reding

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 <treding@nvidia.com>

parent 456ac56b

drivers/gpu/drm/tegra/output.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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)