gpu: nvgpu: get voltage, current, power and temperature

Add ioctls to retrieve voltage, current, power and temperature.
Add flags in GPU characteristics to indicate if feature is supported.

Jira DNVGPU-166

Change-Id: Idd5a767326c9d43630e8289ca7d2c27bb96a9f14
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1241862
Tested-by: Thomas Fleury <tfleury@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1267153

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 564026a4..071111ab 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -588,6 +588,7 @@ struct gpu_ops {
                 int (*init_therm_setup_hw)(struct gk20a *g);
                 int (*elcg_init_idle_filters)(struct gk20a *g);
                 void (*therm_debugfs_init)(struct gk20a *g);
+                int (*get_internal_sensor_curr_temp)(struct gk20a *g, u32 *temp_f24_8);
         } therm;
         struct {
                 bool (*is_pmu_supported)(struct gk20a *g);