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c81cc032c4
Add new power/clock gating functions that can be called by
other units.
New clock_gating functions will reside in cg.c under
common/power_features/cg unit.
New power gating functions will reside in pg.c under
common/power_features/pg unit.
Use nvgpu_pg_elpg_disable and nvgpu_pg_elpg_enable to disable/enable
elpg and also in gr_gk20a_elpg_protected macro to access gr registers.
Add cg_pg_lock to make elpg_enabled, elcg_enabled, blcg_enabled
and slcg_enabled thread safe.
JIRA NVGPU-2014
Change-Id: I00d124c2ee16242c9a3ef82e7620fbb7f1297aff
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2025493
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
(cherry-picked from c905858565 in
dev-kernel)
Reviewed-on: https://git-master.nvidia.com/r/2108406
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
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* Copyright (c) 2019, 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 <nvgpu/gk20a.h>
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#include <nvgpu/power_features/cg.h>
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#include <nvgpu/power_features/pg.h>
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#include <nvgpu/power_features/power_features.h>
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int nvgpu_cg_pg_disable(struct gk20a *g)
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{
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int err = 0;
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nvgpu_log_fn(g, " ");
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/* disable elpg before clock gating */
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err = nvgpu_pg_elpg_disable(g);
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if (err != 0) {
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nvgpu_err(g, "failed to set disable elpg");
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}
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nvgpu_cg_slcg_gr_perf_ltc_load_disable(g);
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nvgpu_cg_blcg_mode_disable(g);
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nvgpu_cg_elcg_disable(g);
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return err;
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}
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int nvgpu_cg_pg_enable(struct gk20a *g)
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{
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int err = 0;
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nvgpu_log_fn(g, " ");
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nvgpu_cg_elcg_enable(g);
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nvgpu_cg_blcg_mode_enable(g);
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nvgpu_cg_slcg_gr_perf_ltc_load_enable(g);
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err = nvgpu_pg_elpg_enable(g);
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if (err != 0) {
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nvgpu_err(g, "failed to set enable elpg");
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}
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return err;
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}
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