[PATCH v2 05/12] gpu: host1x: register dependency parser for firmware nodes
From: Tomeu Vizoso <hidden>
Date: 2015-07-01 09:44:21
Also in:
alsa-devel, dri-devel, linux-acpi, linux-devicetree, linux-gpio, linux-pwm, linux-tegra, lkml
Subsystem:
drm drivers, drm drivers for nvidia tegra, the rest · Maintainers:
David Airlie, Simona Vetter, Thierry Reding, Mikko Perttunen, Linus Torvalds
So others can find out dependencies of host1x clients, as specified in bindings/gpu/nvidia,tegra20-host1x.txt. Signed-off-by: Tomeu Vizoso <redacted> --- 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