gpu: nvgpu: add support for voltage config

- changes to read voltage tables from VBIOS
  & create boardobj then send to pmu
- Rail, Device & Policy objects are read from VBIOS & created boardobjs
- RPC support to load, Set & get voltage.

JIRA DNVGPU-122

Change-Id: I61621a514eef9c081a64c4ab066f01dfc28f8402
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1222774
(cherry picked from commit 9da86d8c2c547623cf5f38c89afeb3f5bb1667ac)
Reviewed-on: http://git-master/r/1244656
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/volt/volt_pmu.h b/drivers/gpu/nvgpu/volt/volt_pmu.h
new file mode 100644
index 00000000..c98ba321
--- /dev/null
+++ b/drivers/gpu/nvgpu/volt/volt_pmu.h
@@ -0,0 +1,22 @@
+/*
+* Copyright (c) 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,
+* version 2, as published by the Free Software Foundation.
+*
+* This program is distributed in the hope it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+* more details.
+*/
+
+#ifndef _VOLT_PMU_H_
+#define _VOLT_PMU_H_
+
+u32 volt_pmu_send_load_cmd_to_pmu(struct gk20a *g);
+u32 volt_set_voltage(struct gk20a *g, u32 logic_voltage_uv,
+                u32 sram_voltage_uv);
+u32 volt_get_voltage(struct gk20a *g, u32 volt_domain);
+
+#endif