So others can find out dependencies of host1x clients, as specified in
bindings/gpu/nvidia,tegra20-host1x.txt.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
Changes in v2: None
drivers/gpu/host1x/dev.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index 53d3d1d..5bb10b8 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -212,6 +212,29 @@ static struct platform_driver tegra_host1x_driver = {
.remove = host1x_remove,
};
+static void add_dependency(struct fwnode_handle *fwnode,
+ const char *property,
+ struct list_head *deps)
+{
+ struct device_node *np;
+
+ np = of_parse_phandle(to_of_node(fwnode), property, 0);
+ if (!np)
+ return;
+
+ fwnode_add_dependency(&np->fwnode, deps);
+}
+
+static void host1x_get_dependencies(struct fwnode_handle *fwnode,
+ struct list_head *deps)
+{
+ add_dependency(fwnode, "nvidia,dpaux", deps);
+ add_dependency(fwnode, "nvidia,panel", deps);
+ add_dependency(fwnode, "nvidia,ddc-i2c-bus", deps);
+ add_dependency(fwnode, "nvidia,hpd-gpio", deps);
+ add_dependency(fwnode, "ddc-i2c-bus", deps);
+}
+
static int __init tegra_host1x_init(void)
{
int err;
@@ -228,6 +251,8 @@ static int __init tegra_host1x_init(void)
if (err < 0)
goto unregister_host1x;
+ fwnode_add_dependency_parser(host1x_get_dependencies);
+
return 0;
unregister_host1x:
@@ -240,6 +265,7 @@ module_init(tegra_host1x_init);
static void __exit tegra_host1x_exit(void)
{
+ fwnode_remove_dependency_parser(host1x_get_dependencies);
platform_driver_unregister(&tegra_mipi_driver);
platform_driver_unregister(&tegra_host1x_driver);
bus_unregister(&host1x_bus_type);
--
2.4.1
--
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