gpu: nvgpu: ioctls for clock controls

Add ioctls for clock range and VF points query.
Add ioctls to set target mhz, and get actual mhz.

Jira DNVGPU-125

Change-Id: I7639789bb15eabd8c98adc468201dba3a6e19ade
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1223473
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
(cherry picked from commit 5e635ae34221c99a739321bcfc1418db56c1051d)
Reviewed-on: http://git-master/r/1243107
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 99d2fe63..03bbf72f 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -974,6 +974,12 @@ int gk20a_pm_finalize_poweron(struct device *dev)
         }
 #endif
 
+        err = nvgpu_clk_arb_init_arbiter(g);
+        if (err) {
+                gk20a_err(dev, "failed to init clk arb");
+                goto done;
+        }
+
         if (g->ops.pmu.is_pmu_supported(g)) {
                 err = gk20a_init_pmu_support(g);
                 if (err) {
@@ -1644,6 +1650,8 @@ static int __exit gk20a_remove(struct platform_device *pdev)
         if (platform->has_ce)
                 gk20a_ce_destroy(g);
 
+        nvgpu_clk_arb_cleanup_arbiter(g);
+
         gk20a_user_deinit(dev, &nvgpu_class);
 
         debugfs_remove_recursive(platform->debugfs);