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 void nouveau_platform_remove(struct platform_device *pdev) 47 { 48 struct drm_device *dev = platform_get_drvdata(pdev); 49 nouveau_drm_device_remove(dev); 50 } 51 52 #if IS_ENABLED(CONFIG_OF) 53 static const struct nvkm_device_tegra_func gk20a_platform_data = { 54 .iommu_bit = 34, 55 .require_vdd = true, 56 }; 57 58 static const struct nvkm_device_tegra_func gm20b_platform_data = { 59 .iommu_bit = 34, 60 .require_vdd = true, 61 .require_ref_clk = true, 62 }; 63 64 static const struct nvkm_device_tegra_func gp10b_platform_data = { 65 .iommu_bit = 36, 66 /* power provided by generic PM domains */ 67 .require_vdd = false, 68 }; 69 70 static const struct of_device_id nouveau_platform_match[] = { 71 { 72 .compatible = "nvidia,gk20a", 73 .data = &gk20a_platform_data, 74 }, 75 { 76 .compatible = "nvidia,gm20b", 77 .data = &gm20b_platform_data, 78 }, 79 { 80 .compatible = "nvidia,gp10b", 81 .data = &gp10b_platform_data, 82 }, 83 { } 84 }; 85 86 MODULE_DEVICE_TABLE(of, nouveau_platform_match); 87 #endif 88 89 struct platform_driver nouveau_platform_driver = { 90 .driver = { 91 .name = "nouveau", 92 .of_match_table = of_match_ptr(nouveau_platform_match), 93 }, 94 .probe = nouveau_platform_probe, 95 .remove_new = nouveau_platform_remove, 96 }; 97