aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorbenjamin.gaignard@linaro.org2017-10-02 11:34:45 +0200
committerBenjamin Gaignard2017-10-10 11:32:43 +0200
commitc70087e8f16f1dfe703d223aadd95ede1cde8e30 (patch)
tree1a7e3ad8bd8cde5f23b994b6d7054758583c9ee6 /drivers
parent6b0e284cfa3898109f9f4c9fa6541caa027a3635 (diff)
drm/drm_of: add drm_of_panel_bridge_remove function
This function is the pendant of drm_of_find_panel_or_bridge() to remove a previously allocated panel_bridge. Given a specific port and endpoint it remove the panel bridge. Since drm_panel_bridge_remove() will check that bridge parameter is not NULL and is a real drm_panel_bridge and no a simple bridge it is safe to call it directly. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Reviewed-by: Philippe Cornu <philippe.cornu@st.com> Tested-by: Philippe Cornu <philippe.cornu@st.com> Link: https://patchwork.freedesktop.org/patch/msgid/1506936888-23844-3-git-send-email-benjamin.gaignard@linaro.org
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/drm_of.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index 4c191c050e7d..7a36934ea5db 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c
@@ -262,3 +262,36 @@ int drm_of_find_panel_or_bridge(const struct device_node *np,
return ret;
}
EXPORT_SYMBOL_GPL(drm_of_find_panel_or_bridge);
+
+#ifdef CONFIG_DRM_PANEL_BRIDGE
+/*
+ * drm_of_panel_bridge_remove - remove panel bridge
+ * @np: device tree node containing panel bridge output ports
+ *
+ * Remove the panel bridge of a given DT node's port and endpoint number
+ *
+ * Returns zero if successful, or one of the standard error codes if it fails.
+ */
+int drm_of_panel_bridge_remove(const struct device_node *np,
+ int port, int endpoint)
+{
+ struct drm_bridge *bridge;
+ struct device_node *remote;
+
+ remote = of_graph_get_remote_node(np, port, endpoint);
+ if (!remote)
+ return -ENODEV;
+
+ bridge = of_drm_find_bridge(remote);
+ drm_panel_bridge_remove(bridge);
+
+ return 0;
+}
+#else
+int drm_of_panel_bridge_remove(const struct device_node *np,
+ int port, int endpoint)
+{
+ return -EINVAL;
+}
+#endif
+EXPORT_SYMBOL_GPL(drm_of_panel_bridge_remove);