mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
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b3a7c2b305
Add devfreq governor support in order to allow frequency scaling
in virtualization config. GPU clock frequency operations are
re-directed to the server over RPC.
Bug 200237433
Change-Id: I1c8e565a4fff36d3456dc72ebb20795b7822650e
Signed-off-by: Sachit Kadle <skadle@nvidia.com>
Reviewed-on: http://git-master/r/1295542
(cherry picked from commit d5c956fc06697eda3829c67cb22987e538213b29)
Reviewed-on: http://git-master/r/1280968
(cherry picked from commit 25e2b3cf7cb5559a6849c0024d42c157564a9be2)
Reviewed-on: http://git-master/r/1321835
(cherry picked from commit f871b52fd3)
Reviewed-on: http://git-master/r/1313468
Tested-by: Aparna Das <aparnad@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
GVS: Gerrit_Virtual_Submit
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* Tegra Virtualized GPU Platform Interface
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*
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* Copyright (c) 2014-2017, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include "gk20a.h"
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#include "hal_gk20a.h"
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#include "platform_gk20a.h"
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#include "vgpu/clk_vgpu.h"
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#include <nvgpu/nvhost.h>
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static int gk20a_tegra_probe(struct device *dev)
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{
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#ifdef CONFIG_TEGRA_GK20A_NVHOST
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struct gk20a_platform *platform = dev_get_drvdata(dev);
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int ret;
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ret = nvgpu_get_nvhost_dev(platform->g);
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if (ret)
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return ret;
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vgpu_init_clk_support(platform->g);
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return 0;
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#else
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return 0;
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#endif
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}
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struct gk20a_platform vgpu_tegra_platform = {
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.has_syncpoints = true,
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.aggressive_sync_destroy_thresh = 64,
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/* power management configuration */
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.can_railgate_init = false,
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.can_elpg_init = false,
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.enable_slcg = false,
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.enable_blcg = false,
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.enable_elcg = false,
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.enable_elpg = false,
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.enable_aelpg = false,
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.ch_wdt_timeout_ms = 5000,
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.probe = gk20a_tegra_probe,
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.default_big_page_size = SZ_128K,
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.clk_round_rate = vgpu_clk_round_rate,
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.get_clk_freqs = vgpu_clk_get_freqs,
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/* frequency scaling configuration */
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.devfreq_governor = "userspace",
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.virtual_dev = true,
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};
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