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 #include <nvkm/subdev/clk/gk20a_devfreq.h> 25 26 static int nouveau_platform_probe(struct platform_device *pdev) 27 { 28 const struct nvkm_device_tegra_func *func; 29 struct nvkm_device *device = NULL; 30 struct drm_device *drm; 31 32 func = of_device_get_match_data(&pdev->dev); 33 34 drm = nouveau_platform_device_create(func, pdev, &device); 35 return PTR_ERR_OR_ZERO(drm); 36 } 37 38 static void nouveau_platform_remove(struct platform_device *pdev) 39 { 40 struct nouveau_drm *drm = platform_get_drvdata(pdev); 41 42 nouveau_drm_device_remove(drm); 43 } 44 45 #ifdef CONFIG_PM_SLEEP 46 static int nouveau_platform_suspend(struct device *dev) 47 { 48 return gk20a_devfreq_suspend(dev); 49 } 50 51 static int nouveau_platform_resume(struct device *dev) 52 { 53 return gk20a_devfreq_resume(dev); 54 } 55 56 static SIMPLE_DEV_PM_OPS(nouveau_pm_ops, nouveau_platform_suspend, 57 nouveau_platform_resume); 58 #endif 59 60 #if IS_ENABLED(CONFIG_OF) 61 static const struct nvkm_device_tegra_func gk20a_platform_data = { 62 .iommu_bit = 34, 63 .require_vdd = true, 64 }; 65 66 static const struct nvkm_device_tegra_func gm20b_platform_data = { 67 .iommu_bit = 34, 68 .require_vdd = true, 69 .require_ref_clk = true, 70 }; 71 72 static const struct nvkm_device_tegra_func gp10b_platform_data = { 73 .iommu_bit = 36, 74 /* power provided by generic PM domains */ 75 .require_vdd = false, 76 }; 77 78 static const struct of_device_id nouveau_platform_match[] = { 79 { 80 .compatible = "nvidia,gk20a", 81 .data = &gk20a_platform_data, 82 }, 83 { 84 .compatible = "nvidia,gm20b", 85 .data = &gm20b_platform_data, 86 }, 87 { 88 .compatible = "nvidia,gp10b", 89 .data = &gp10b_platform_data, 90 }, 91 { } 92 }; 93 94 MODULE_DEVICE_TABLE(of, nouveau_platform_match); 95 #endif 96 97 struct platform_driver nouveau_platform_driver = { 98 .driver = { 99 .name = "nouveau", 100 .of_match_table = of_match_ptr(nouveau_platform_match), 101 #ifdef CONFIG_PM_SLEEP 102 .pm = &nouveau_pm_ops, 103 #endif 104 }, 105 .probe = nouveau_platform_probe, 106 .remove = nouveau_platform_remove, 107 }; 108