drivers/gpu/host1x/context_bus.c

   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);