gpu: nvgpu: add read_ptimer to gops

Move all places that read ptimer to use the callback.
It's for add vgpu implementation of read ptimer.

Bug 1395833

Change-Id: Ia339f2f08d75ca4969a443fffc9a61cff1d3d2b7
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/1159587
(cherry picked from commit a01f804684f875c9cffc31eb2c1038f2f29ec66f)
Reviewed-on: http://git-master/r/1158449
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 4ede8982..e639ace4 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -620,6 +620,7 @@ struct gpu_ops {
 
         int (*get_litter_value)(struct gk20a *g, enum nvgpu_litter_value value);
         int (*chip_init_gpu_characteristics)(struct gk20a *g);
+        int (*read_ptimer)(struct gk20a *g, u64 *value);
 
         struct {
                 int (*init)(struct gk20a *g);
@@ -1111,7 +1112,7 @@ static inline u32 scale_ptimer(u32 timeout , u32 scale10x)
                 return (timeout * 10) / scale10x;
 }
 
-u64 gk20a_read_ptimer(struct gk20a *g);
+int gk20a_read_ptimer(struct gk20a *g, u64 *value);
 extern struct class nvgpu_class;
 
 #define INTERFACE_NAME "nvhost%s-gpu"