gpu: nvgpu: Allow enabling PC sampling

Allow enabling of PC sampling hardware workaround. It is only
applicable to gm20b.

Bug 1517458
Bug 1573150

Change-Id: Iad6a3ae556489fb7ab9628637d291849d2cd98ea
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/710421

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index acee2e48..441ea7cc 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -165,6 +165,8 @@ struct gpu_ops {
                                 void *ctx_ptr);
                 int (*dump_gr_regs)(struct gk20a *g,
                                 struct gk20a_debug_output *o);
+                int (*update_pc_sampling)(struct channel_gk20a *ch,
+                                           bool enable);
         } gr;
         const char *name;
         struct {