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6ca1701cec
Using pmu counters for usage stats. This enables dynamic frequency scaling on all of the currently supported Tegra gpus. The register offsets are valid for gk20a, gm20b, gp10b, and gv11b. If support is added for ga10b, this will need rearchitected. Signed-off-by: Aaron Kling <webgeek1234@gmail.com> Reviewed-by: Lyude Paul <lyude@redhat.com> [fixed tab alignment in gk20a_devfreq_target()] Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20250906-gk20a-devfreq-v2-1-0217f53ee355@gmail.com
108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "nouveau_platform.h"
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#include <nvkm/subdev/clk/gk20a_devfreq.h>
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static int nouveau_platform_probe(struct platform_device *pdev)
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{
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const struct nvkm_device_tegra_func *func;
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struct nvkm_device *device = NULL;
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struct drm_device *drm;
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func = of_device_get_match_data(&pdev->dev);
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drm = nouveau_platform_device_create(func, pdev, &device);
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return PTR_ERR_OR_ZERO(drm);
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}
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static void nouveau_platform_remove(struct platform_device *pdev)
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{
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struct nouveau_drm *drm = platform_get_drvdata(pdev);
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nouveau_drm_device_remove(drm);
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}
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#ifdef CONFIG_PM_SLEEP
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static int nouveau_platform_suspend(struct device *dev)
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{
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return gk20a_devfreq_suspend(dev);
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}
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static int nouveau_platform_resume(struct device *dev)
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{
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return gk20a_devfreq_resume(dev);
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}
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static SIMPLE_DEV_PM_OPS(nouveau_pm_ops, nouveau_platform_suspend,
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nouveau_platform_resume);
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#endif
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#if IS_ENABLED(CONFIG_OF)
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static const struct nvkm_device_tegra_func gk20a_platform_data = {
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.iommu_bit = 34,
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.require_vdd = true,
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};
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static const struct nvkm_device_tegra_func gm20b_platform_data = {
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.iommu_bit = 34,
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.require_vdd = true,
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.require_ref_clk = true,
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};
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static const struct nvkm_device_tegra_func gp10b_platform_data = {
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.iommu_bit = 36,
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/* power provided by generic PM domains */
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.require_vdd = false,
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};
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static const struct of_device_id nouveau_platform_match[] = {
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{
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.compatible = "nvidia,gk20a",
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.data = &gk20a_platform_data,
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},
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{
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.compatible = "nvidia,gm20b",
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.data = &gm20b_platform_data,
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},
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{
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.compatible = "nvidia,gp10b",
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.data = &gp10b_platform_data,
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, nouveau_platform_match);
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#endif
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struct platform_driver nouveau_platform_driver = {
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.driver = {
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.name = "nouveau",
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.of_match_table = of_match_ptr(nouveau_platform_match),
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#ifdef CONFIG_PM_SLEEP
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.pm = &nouveau_pm_ops,
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#endif
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},
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.probe = nouveau_platform_probe,
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.remove = nouveau_platform_remove,
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};
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