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authorChen-Yu Tsai <wens@csie.org>2017-02-23 16:05:34 +0800
committerMaxime Ripard <maxime.ripard@free-electrons.com>2017-03-07 22:15:15 +0100
commit7544860733d158e3edbf309f27e79e258c8f66bd (patch)
treedb6721e721d85c119307c7f011633f83bf209af8 /drivers/gpu/drm/sun4i/sun4i_crtc.c
parenta6fbffb0301196df7735aa4aacd35610858e471f (diff)
drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node
The way drm_of_find_possible_crtcs works is it tries to match the remote-endpoint of the given node's various endpoints to all the crtc's .port field. Thus we need to set drm_crtc.port to the output port node of the underlying TCON. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_crtc.c')
-rw-r--r--drivers/gpu/drm/sun4i/sun4i_crtc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 7d332fce6770..eec13cea3144 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -19,6 +19,7 @@
#include <linux/clk-provider.h>
#include <linux/ioport.h>
#include <linux/of_address.h>
+#include <linux/of_graph.h>
#include <linux/of_irq.h>
#include <linux/regmap.h>
@@ -160,5 +161,9 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm)
drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
+ /* Set crtc.port to output port node of the tcon */
+ scrtc->crtc.port = of_graph_get_port_by_id(drv->tcon->dev->of_node,
+ 1);
+
return scrtc;
}