drivers/gpu/drm/nouveau/nouveau_platform.c

   1 /*
   2  * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22 #include "nouveau_platform.h"
  23
  24 static int nouveau_platform_probe(struct platform_device *pdev)
  25 {
  26         const struct nvkm_device_tegra_func *func;
  27         struct nvkm_device *device;
  28         struct drm_device *drm;
  29         int ret;
  30
  31         func = of_device_get_match_data(&pdev->dev);
  32
  33         drm = nouveau_platform_device_create(func, pdev, &device);
  34         if (IS_ERR(drm))
  35                 return PTR_ERR(drm);
  36
  37         ret = drm_dev_register(drm, 0);
  38         if (ret < 0) {
  39                 drm_dev_unref(drm);
  40                 return ret;
  41         }
  42
  43         return 0;
  44 }
  45
  46 static int nouveau_platform_remove(struct platform_device *pdev)
  47 {
  48         struct drm_device *dev = platform_get_drvdata(pdev);
  49         nouveau_drm_device_remove(dev);
  50         return 0;
  51 }
  52
  53 #if IS_ENABLED(CONFIG_OF)
  54 static const struct nvkm_device_tegra_func gk20a_platform_data = {
  55         .iommu_bit = 34,
  56 };
  57
  58 static const struct of_device_id nouveau_platform_match[] = {
  59         {
  60                 .compatible = "nvidia,gk20a",
  61                 .data = &gk20a_platform_data,
  62         },
  63         {
  64                 .compatible = "nvidia,gm20b",
  65                 .data = &gk20a_platform_data,
  66         },
  67         { }
  68 };
  69
  70 MODULE_DEVICE_TABLE(of, nouveau_platform_match);
  71 #endif
  72
  73 struct platform_driver nouveau_platform_driver = {
  74         .driver = {
  75                 .name = "nouveau",
  76                 .of_match_table = of_match_ptr(nouveau_platform_match),
  77         },
  78         .probe = nouveau_platform_probe,
  79         .remove = nouveau_platform_remove,
  80 };