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 = NULL; 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_put(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 .require_vdd = true, 57 }; 58 59 static const struct nvkm_device_tegra_func gm20b_platform_data = { 60 .iommu_bit = 34, 61 .require_vdd = true, 62 .require_ref_clk = true, 63 }; 64 65 static const struct nvkm_device_tegra_func gp10b_platform_data = { 66 .iommu_bit = 36, 67 /* power provided by generic PM domains */ 68 .require_vdd = false, 69 }; 70 71 static const struct of_device_id nouveau_platform_match[] = { 72 { 73 .compatible = "nvidia,gk20a", 74 .data = &gk20a_platform_data, 75 }, 76 { 77 .compatible = "nvidia,gm20b", 78 .data = &gm20b_platform_data, 79 }, 80 { 81 .compatible = "nvidia,gp10b", 82 .data = &gp10b_platform_data, 83 }, 84 { } 85 }; 86 87 MODULE_DEVICE_TABLE(of, nouveau_platform_match); 88 #endif 89 90 struct platform_driver nouveau_platform_driver = { 91 .driver = { 92 .name = "nouveau", 93 .of_match_table = of_match_ptr(nouveau_platform_match), 94 }, 95 .probe = nouveau_platform_probe, 96 .remove = nouveau_platform_remove, 97 }; 98