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 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