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drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node

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[ Upstream commit 7544860733 ]

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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chen-Yu Tsai
2017-02-23 16:05:34 +08:00
committed by Greg Kroah-Hartman
parent 7c4b9440c5
commit c1315eea94
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/sun4i/sun4i_crtc.c
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@@ -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>
@@ -136,5 +137,9 @@ 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;
}