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drm/omap: Fix port lookup for SDI output

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When refactoring port lookup for DSS outputs, commit d17eb4537a
("drm/omap: Factor out common init/cleanup code for output devices")
incorrectly hardcoded usage of DT port 0. This breaks operation for SDI
(which uses the DT port 1) and DPI outputs other than DPI0 (which are
not used in mainline DT sources).

Fix this by using the port number from the output omap_dss_device
of_ports field.

Fixes: d17eb4537a ("drm/omap: Factor out common init/cleanup code for output devices")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190821183226.13784-1-laurent.pinchart@ideasonboard.com
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
This commit is contained in:
Laurent Pinchart 2019-08-21 21:32:26 +03:00 committed by Tomi Valkeinen
parent fbf0a7f44c
commit 8090f7eb31
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/omapdrm/dss/output.c
View file

@ -4,6 +4,7 @@
* Author: Archit Taneja <archit@ti.com>
*/
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
@ -20,7 +21,8 @@ int omapdss_device_init_output(struct omap_dss_device *out)
{
struct device_node *remote_node;
remote_node = of_graph_get_remote_node(out->dev->of_node, 0, 0);
remote_node = of_graph_get_remote_node(out->dev->of_node,
ffs(out->of_ports) - 1, 0);
if (!remote_node) {
dev_dbg(out->dev, "failed to find video sink\n");
return 0;