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nouveau_platform.c revision 1.2 
      1 /*	$NetBSD: nouveau_platform.c,v 1.2 2018/08/27 04:58:24 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     22  * DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_platform.c,v 1.2 2018/08/27 04:58:24 riastradh Exp $");
     26 
     27 #include "nouveau_platform.h"
     28 
     29 static int nouveau_platform_probe(struct platform_device *pdev)
     30 {
     31 	const struct nvkm_device_tegra_func *func;
     32 	struct nvkm_device *device = NULL;
     33 	struct drm_device *drm;
     34 	int ret;
     35 
     36 	func = of_device_get_match_data(&pdev->dev);
     37 
     38 	drm = nouveau_platform_device_create(func, pdev, &device);
     39 	if (IS_ERR(drm))
     40 		return PTR_ERR(drm);
     41 
     42 	ret = drm_dev_register(drm, 0);
     43 	if (ret < 0) {
     44 		drm_dev_unref(drm);
     45 		return ret;
     46 	}
     47 
     48 	return 0;
     49 }
     50 
     51 static int nouveau_platform_remove(struct platform_device *pdev)
     52 {
     53 	struct drm_device *dev = platform_get_drvdata(pdev);
     54 	nouveau_drm_device_remove(dev);
     55 	return 0;
     56 }
     57 
     58 #if IS_ENABLED(CONFIG_OF)
     59 static const struct nvkm_device_tegra_func gk20a_platform_data = {
     60 	.iommu_bit = 34,
     61 };
     62 
     63 static const struct of_device_id nouveau_platform_match[] = {
     64 	{
     65 		.compatible = "nvidia,gk20a",
     66 		.data = &gk20a_platform_data,
     67 	},
     68 	{
     69 		.compatible = "nvidia,gm20b",
     70 		.data = &gk20a_platform_data,
     71 	},
     72 	{ }
     73 };
     74 
     75 MODULE_DEVICE_TABLE(of, nouveau_platform_match);
     76 #endif
     77 
     78 struct platform_driver nouveau_platform_driver = {
     79 	.driver = {
     80 		.name = "nouveau",
     81 		.of_match_table = of_match_ptr(nouveau_platform_match),
     82 	},
     83 	.probe = nouveau_platform_probe,
     84 	.remove = nouveau_platform_remove,
     85 };
     86