gpu: nvgpu: gp106: fix freq scale in debugfs nodes

For better precision dramdiv4 (MCLK/4) counter is used to measure
MCLK frequency. But the scaling factor of 2 must be taken into
account when reporting dramdiv2_rec_clk1.
The issue was not affecting other counters which use scale=1.

Bug 200386061

Change-Id: Ib3891f3f2dd4206ac36aa3e3290810144f4aa339
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1654536
(cherry picked from commit 6a68207c90feab1caee737013ab7cd5bb3863fb6)
Reviewed-on: https://git-master.nvidia.com/r/1657209
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gp106/clk_gp106.c b/drivers/gpu/nvgpu/gp106/clk_gp106.c
index b8a1ba3d..2ac2ce5a 100644
--- a/drivers/gpu/nvgpu/gp106/clk_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/clk_gp106.c
@@ -1,7 +1,7 @@
 /*
  * GP106 Clocks
  *
- * 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"),
@@ -236,7 +236,8 @@ static int gp106_get_rate_show(void *data , u64 *val) {
         struct namemap_cfg *c = (struct namemap_cfg *) data;
         struct gk20a *g = c->g;
 
-        *val = c->is_counter ? gp106_get_rate_cntr(g, c) : 0 /* TODO PLL read */;
+        *val = c->is_counter ? (u64)c->scale * gp106_get_rate_cntr(g, c) :
+                0 /* TODO PLL read */;
         return 0;
 }
 DEFINE_SIMPLE_ATTRIBUTE(get_rate_fops, gp106_get_rate_show, NULL, "%llu\n");