gpu: nvgpu: add clocks control capability

Add NVGPU_GPU_FLAGS_SUPPORT_CLOCK_CONTROLS bit to allow user library
to determine if GPU supports clock control ioctls.

Jira DNVGPU-125

Change-Id: Ia09808ed36aa85a7c520039bb336888e2b467076
Signed-off-by: David Martine Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1239379
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1267154
Reviewed-by: Automatic_Commit_Validation_User

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 8a1df1cc..df57ec7c 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -2056,6 +2056,9 @@ int gk20a_init_gpu_characteristics(struct gk20a *g)
         gpu->flags |= NVGPU_GPU_FLAGS_SUPPORT_USERSPACE_MANAGED_AS;
         gpu->flags |= NVGPU_GPU_FLAGS_SUPPORT_TSG;
 
+        if (g->ops.clk_arb.get_arbiter_clk_domains)
+                gpu->flags |= NVGPU_GPU_FLAGS_SUPPORT_CLOCK_CONTROLS;
+
         gpu->gpc_mask = (1 << g->gr.gpc_count)-1;
 
         g->ops.gr.detect_sm_arch(g);