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Subject[PATCH 5/6] drm/meson: remove useless recursive components matching
Date
The initial design was recursive to cover all port/endpoints, but only the first layer
of endpoints should be covered by the components list.
This also breaks the MIPI-DSI init/bridge attach sequence, thus only parse the
first endpoints instead of recursing.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/gpu/drm/meson/meson_drv.c | 48 +++++--------------------------
1 file changed, 7 insertions(+), 41 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 92346653223f..1a4cf910c6a0 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -449,46 +449,6 @@ static int compare_of(struct device *dev, void *data)
return dev->of_node == data;
}

-/* Possible connectors nodes to ignore */
-static const struct of_device_id connectors_match[] = {
- { .compatible = "composite-video-connector" },
- { .compatible = "svideo-connector" },
- { .compatible = "hdmi-connector" },
- { .compatible = "dvi-connector" },
- {}
-};
-
-static int meson_probe_remote(struct platform_device *pdev,
- struct component_match **match,
- struct device_node *parent,
- struct device_node *remote)
-{
- struct device_node *ep, *remote_node;
- int count = 1;
-
- /* If node is a connector, return and do not add to match table */
- if (of_match_node(connectors_match, remote))
- return 1;
-
- component_match_add(&pdev->dev, match, compare_of, remote);
-
- for_each_endpoint_of_node(remote, ep) {
- remote_node = of_graph_get_remote_port_parent(ep);
- if (!remote_node ||
- remote_node == parent || /* Ignore parent endpoint */
- !of_device_is_available(remote_node)) {
- of_node_put(remote_node);
- continue;
- }
-
- count += meson_probe_remote(pdev, match, remote, remote_node);
-
- of_node_put(remote_node);
- }
-
- return count;
-}
-
static int meson_drv_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
@@ -503,8 +463,14 @@ static int meson_drv_probe(struct platform_device *pdev)
continue;
}

- count += meson_probe_remote(pdev, &match, np, remote);
+ DRM_DEBUG_DRIVER("parent %pOF remote %pOF\n", np, remote);
+
+ DRM_DEBUG_DRIVER("match add %pOF parent %s\n", remote, dev_name(&pdev->dev));
+ component_match_add(&pdev->dev, &match, compare_of, remote);
+
of_node_put(remote);
+
+ ++count;
}

if (count && !match)
--
2.22.0
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