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
nouveau_platform_probe(struct platform_device * pdev)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
nouveau_platform_remove(struct platform_device * pdev)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