gpu: nvgpu: move gp106 specific clk_arbiter code into HAL

Currently, clock arbiter code is extensively using dgpu specific
implementation. This patch restructures the clk_arbiter code and moves
gp106 specific code into HAL. Following changes are made in this patch

1) clk_domain_get_f_points is now invoked via HAL for gp106 i.e.
g->ops.clk.clk_domain_get_f_points.

2) moved nvgpu_clk_arb_change_vf_point and other related static
functions to clk_arb_gp106.c.

3) Instead of only checking if get_arbiter_clk_domain is empty, a
check for support_clk_freq_controller is also added. This is to enable
the clk_arbiter based on support from both the OS and the chips.

Bug 2061372

Change-Id: I65b0a4e02145a86fbbfb420ed591b1fa3c86f6dc
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1774279
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp106/clk_gp106.h b/drivers/gpu/nvgpu/gp106/clk_gp106.h
index 97baa224..b7ab3164 100644
--- a/drivers/gpu/nvgpu/gp106/clk_gp106.h
+++ b/drivers/gpu/nvgpu/gp106/clk_gp106.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2018, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -56,5 +56,10 @@ int gp106_init_clk_support(struct gk20a *g);
 u32 gp106_crystal_clk_hz(struct gk20a *g);
 unsigned long gp106_clk_measure_freq(struct gk20a *g, u32 api_domain);
 int gp106_suspend_clk_support(struct gk20a *g);
+int gp106_clk_domain_get_f_points(
+        struct gk20a *g,
+        u32 clkapidomain,
+        u32 *pfpointscount,
+        u16 *pfreqpointsinmhz);
 
 #endif /* CLK_GP106_H */