| From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.9 016/219] drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node | Date | Sat, 3 Mar 2018 22:28:04 +0000 |
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From: Chen-Yu Tsai <wens@csie.org>
[ Upstream commit 7544860733d158e3edbf309f27e79e258c8f66bd ]
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> --- drivers/gpu/drm/sun4i/sun4i_crtc.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c index 4a192210574f..caba0311c86c 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> @@ -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; } -- 2.14.1
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