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gpu: nvgpu: gp10b: add delay cycles before engine gating

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For copy engine, add 16 clock cycle delay
before engine clock gating.

Bug 1717152

Change-Id: Ife92299c052f44000bc0d900f0129a2eab13f3b5
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/998408
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Seshendra Gadagottu
2016-01-26 17:53:12 -08:00
committed by Deepak Nibade
parent b8db86a6b6
commit d730381f93
2 changed files with 23 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/nvgpu/gp10b/hw_therm_gp10b.h
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2014-2016, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -246,6 +246,14 @@ static inline u32 therm_gate_ctrl_eng_idle_filt_mant_m(void)
{
return 0x7 << 13;
}
static inline u32 therm_gate_ctrl_eng_delay_before_f(u32 v)
{
return (v & 0xf) << 16;
}
static inline u32 therm_gate_ctrl_eng_delay_before_m(void)
{
return 0xf << 16;
}
static inline u32 therm_gate_ctrl_eng_delay_after_f(u32 v)
{
return (v & 0xf) << 20;

14
drivers/gpu/nvgpu/gp10b/therm_gp10b.c
View File

@@ -78,8 +78,22 @@ static int gp10b_init_therm_setup_hw(struct gk20a *g)
return 0;
}
static int gp10b_update_therm_gate_ctrl(struct gk20a *g)
{
u32 gate_ctrl;
gate_ctrl = gk20a_readl(g, therm_gate_ctrl_r(ENGINE_CE2_GK20A));
gate_ctrl = set_field(gate_ctrl,
therm_gate_ctrl_eng_delay_before_m(),
therm_gate_ctrl_eng_delay_before_f(4));
gk20a_writel(g, therm_gate_ctrl_r(ENGINE_CE2_GK20A), gate_ctrl);
return 0;
}
void gp10b_init_therm_ops(struct gpu_ops *gops)
{
gops->therm.init_therm_setup_hw = gp10b_init_therm_setup_hw;
gops->therm.update_therm_gate_ctrl = gp10b_update_therm_gate_ctrl;
}