Commit a09d2bc1 authored May 03, 2016 by Peter Ujfalusi Committed by Tomi Valkeinen Apr 03, 2017

drm/omap: Use omapdss_stack_is_ready() to check that the display stack is up



Instead of 'guessing' based on aliases of the status of the DSS drivers,
use the new interface to check that all needed drivers are loaded.
In this way we can be sure that all needed drivers are loaded so it is
safe to continue the probing of omapdrm.
This method will allow the omapdrm to be probed 'headless', without
outputs.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

parent 1e08c822

drivers/gpu/drm/omapdrm/omap_drv.c

+3 −6

Original line number	Diff line number	Diff line
		@@ -250,7 +250,9 @@ static int omap_connect_dssdevs(void)
		{
		int r;
		struct omap_dss_device *dssdev = NULL;
		bool no_displays = true;

		if (!omapdss_stack_is_ready())
		return -EPROBE_DEFER;

		for_each_dss_dev(dssdev) {
		r = dssdev->driver->connect(dssdev);
		@@ -260,14 +262,9 @@ static int omap_connect_dssdevs(void)
		} else if (r) {
		dev_warn(dssdev->dev, "could not connect display: %s\n",
		dssdev->name);
		} else {
		no_displays = false;
		}
		}

		if (no_displays)
		return -EPROBE_DEFER;

		return 0;

		cleanup: