1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2021, NVIDIA Corporation. 4 */ 5 6 #include <linux/device.h> 7 #include <linux/of.h> 8 9 struct bus_type host1x_context_device_bus_type = { 10 .name = "host1x-context", 11 }; 12 EXPORT_SYMBOL_GPL(host1x_context_device_bus_type); 13 14 static int __init host1x_context_device_bus_init(void) 15 { 16 int err; 17 18 if (!of_machine_is_compatible("nvidia,tegra186") && 19 !of_machine_is_compatible("nvidia,tegra194") && 20 !of_machine_is_compatible("nvidia,tegra234")) 21 return 0; 22 23 err = bus_register(&host1x_context_device_bus_type); 24 if (err < 0) { 25 pr_err("bus type registration failed: %d\n", err); 26 return err; 27 } 28 29 return 0; 30 } 31 postcore_initcall(host1x_context_device_bus_init); 32