gpu: nvgpu: gv11b: enable devfreq

Enable devfreq for gv11b by enabling ""nvhost_podgov"
governor in platform data.

Reuse scaling functions from gp10b/gk20a.

Remove emc floor on railgate for power saving and make
max emc frequency as floor in rail-ungate for faster gpu boot.

Bug 2039013
Bug 200377508

Change-Id: I65ee7735202e3decbe3451157f7fc1f1f273c3ff
Signed-off-by: seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1639752
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, 7 insertions, 7 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
index 8a964caf..b6593d7a 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
+++ b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
@@ -1,7 +1,7 @@
 /*
  * GP10B Tegra Platform Interface
  *
- * Copyright (c) 2014-2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2018, 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,
@@ -150,7 +150,7 @@ static int gp10b_tegra_probe(struct device *dev)
         return 0;
 }
 
-static int gp10b_tegra_late_probe(struct device *dev)
+int gp10b_tegra_late_probe(struct device *dev)
 {
         /* Cause early VPR resize */
         gk20a_tegra_secure_page_alloc(dev);
@@ -262,7 +262,7 @@ int gp10b_tegra_reset_deassert(struct device *dev)
         return ret;
 }
 
-static void gp10b_tegra_prescale(struct device *dev)
+void gp10b_tegra_prescale(struct device *dev)
 {
         struct gk20a *g = get_gk20a(dev);
         u32 avg = 0;
@@ -274,7 +274,7 @@ static void gp10b_tegra_prescale(struct device *dev)
         gk20a_dbg_fn("done");
 }
 
-static void gp10b_tegra_postscale(struct device *pdev,
+void gp10b_tegra_postscale(struct device *pdev,
                                         unsigned long freq)
 {
         struct gk20a_platform *platform = gk20a_get_platform(pdev);
@@ -283,7 +283,7 @@ static void gp10b_tegra_postscale(struct device *pdev,
         unsigned long emc_rate;
 
         gk20a_dbg_fn("");
-        if (profile && !gp10b_tegra_is_railgated(pdev)) {
+        if (profile && !platform->is_railgated(pdev)) {
                 unsigned long emc_scale;
 
                 if (freq <= gp10b_freq_table[0])
@@ -303,7 +303,7 @@ static void gp10b_tegra_postscale(struct device *pdev,
         gk20a_dbg_fn("done");
 }
 
-static long gp10b_round_clk_rate(struct device *dev, unsigned long rate)
+long gp10b_round_clk_rate(struct device *dev, unsigned long rate)
 {
         struct gk20a *g = get_gk20a(dev);
         struct gk20a_scale_profile *profile = g->scale_profile;
@@ -318,7 +318,7 @@ static long gp10b_round_clk_rate(struct device *dev, unsigned long rate)
         return freq_table[max_states - 1];
 }
 
-static int gp10b_clk_get_freqs(struct device *dev,
+int gp10b_clk_get_freqs(struct device *dev,
                                 unsigned long **freqs, int *num_freqs)
 {
         struct gk20a_platform *platform = gk20a_get_platform(dev);