nouveau_platform.c

  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
 26static 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
 38static 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
 46static int nouveau_platform_suspend(struct device *dev)
 47{
 48	return gk20a_devfreq_suspend(dev);
 49}
 50
 51static int nouveau_platform_resume(struct device *dev)
 52{
 53	return gk20a_devfreq_resume(dev);
 54}
 55
 56static SIMPLE_DEV_PM_OPS(nouveau_pm_ops, nouveau_platform_suspend,
 57			 nouveau_platform_resume);
 58#endif
 59
 60#if IS_ENABLED(CONFIG_OF)
 61static const struct nvkm_device_tegra_func gk20a_platform_data = {
 62	.iommu_bit = 34,
 63	.require_vdd = true,
 64};
 65
 66static const struct nvkm_device_tegra_func gm20b_platform_data = {
 67	.iommu_bit = 34,
 68	.require_vdd = true,
 69	.require_ref_clk = true,
 70};
 71
 72static 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
 78static 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
 94MODULE_DEVICE_TABLE(of, nouveau_platform_match);
 95#endif
 96
 97struct 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};